The most common error codes.
Error | |
---|---|
59.00.40 | Display: 59.00.40 Error |
41.05.YZ | Display: 41.05.YZ Unexpected type in Tray |
52.00.00 | Display: 52.00.00 Error |
69.11.YY | Display: 69.11.YY Error |
59.05.50 | Display: 59.05.50 Error |
59.00.40 | Display: 59.00.40 Error |
41.05.YZ | Display: 41.05.YZ Unexpected type in Tray |
52.00.00 | Display: 52.00.00 Error |
69.11.YY | Display: 69.11.YY Error |
59.05.50 | Display: 59.05.50 Error |
Окончание поддержки: драйверы для принтеров в Windows 7, 8, 8.1, Server 2008, 2008R2.
HP больше не поддерживает эти драйверы принтеров с 1 ноября 2022 г. HP рекомендует обновить операционную систему до поддерживаемой версии. Подробнее
в.
Выберите Печать или Вид.
г.
Найдите IP-адрес или имя хоста на странице Jetdirect.
2.
В адресной строке поддерживаемого веб-браузера, установленного на используемом
компьютере, введите IP-адрес устройства или имя хоста.
Функции встроенного веб-сервера HP
Вкладка Информация
Таблица 6-1
Встроенный веб-сервер HP, вкладка Информация
Меню
Описание
Состояние устройства
Отображает состояние устройства и остаток расходных материалов HP. На
этой странице также отображается тип и формат бумаги для каждого лотка.
Чтобы изменить параметры по умолчанию, щелкните ссылку Изменить
настройки.
Журнал заданий
Вывод на экран сводки всех заданий, обработанных устройством.
Страница конфигурации
Отображает информацию, находящуюся на странице конфигурации.
Страница состояния расходных
материалов
Отображает состояние расходных материалов устройства.
Страница журнала событий
Содержит список всех событий и ошибок устройства. Щелкните ссылку
HP Instant Support (расположенную в разделе Прочие ссылки на каждой
странице встроенного веб-сервера HP), чтобы перейти к группе
динамических веб-страниц с информацией об устранении неполадок. На
этих страницах также отображаются дополнительные службы, доступные
для данного устройства.
Страница расхода
Отображает сводную информацию о количестве страниц, отпечатанных
устройством и сгруппированных по формату, типу и тракту прохождения
бумаги.
Информация об устройстве
Содержит сетевое имя, адрес и модель устройства. Чтобы настроить эти
параметры, откройте меню Информация об устройстве на вкладке Общие.
Панель управления
Показывает изображение экрана, открытого на панели управления.
Печать
Загрузите с компьютера файл, готовый к печати. При печати файла
устройство использует настройки по умолчанию.
Отчеты и страницы для печати
Содержит список внутренних отчетов и страниц устройства, которые можно
просмотреть или распечатать.
Вкладка Общие
Таблица 6-2
Встроенный веб-сервер HP, вкладка Общие
Меню
Описание
Настройка панели управления
Изменение порядка, скрытие и показ элементов панели управления и
изменение языка по умолчанию.
RUWW
Встроенный веб-сервер HP
115
Контрольный список устранения неполадок
Для устранения неисправностей устройства, следуйте приведенным ниже инструкциям.
1.
Если отображается пустая или черная панель управления, выполните следующие
действия.
а.
Проверьте кабель питания.
б.
Проверьте, включено ли питание устройства.
в.
Убедитесь, что линейное напряжение соответствует настройкам устройства.
(требования к напряжению см. на этикетке на задней панели изделия) В случае
использования сетевого фильтра при напряжении, не соответствующем
характеристикам, вставьте вилку шнура питания устройства непосредственно в
стенную розетку. Если оно уже включено в стенную розетку, попробуйте
воспользоваться другой розеткой.
г.
Если ни одно из этих действий не поможет восстановить электропитание, обратитесь
в службу поддержки клиентов HP.
2.
На панели управления должно отображаться состояние Готов.. При появлении
сообщения об ошибке устраните ее.
3.
Проверьте кабельные соединения.
а.
Проверьте кабельное соединение между устройством и компьютером или сетевым
портом. Проверьте надежность соединения.
б.
Проверьте исправность кабеля, заменив его другим, если это возможно.
в.
Проверьте сетевое соединение.
4.
Проверьте, что указанные формат и тип бумаги соответствуют техническим
характеристикам. Кроме того, откройте меню Лотки. на панели управления устройством и
убедитесь, что лоток настроен правильно для выбранного типа и формата бумаги.
5.
Распечатайте страницу конфигурации. Если устройство подключено к сети, будет также
распечатана страница HP Jetdirect .
а.
На панели управления нажмите кнопку Главный экран .
б.
Откройте следующие меню:
◦
Администрирование
◦
Отчеты
◦
Страницы конфигурации/состояния
в.
Выберите параметр Страница конфигурации.
г.
Выберите пункт Печать и нажмите кнопку ОК, чтобы напечатать страницу.
Если эти страницы не распечатаются, проверьте, содержит ли хотя бы один лоток бумагу.
130
Глава 7 Решение проблем
RUWW
LASERJET ENTERPRISE 700
Troubleshooting Manual
2
3
M712
HP LaserJet Enterprise 700 M712
Troubleshooting Manual
Copyright and License
© 2013 Copyright Hewlett-Packard
Development Company, L.P.
Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws.
The information contained herein is subject to change without notice.
The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.
Part number: CF235-90963
Edition 2, 01/2013
Trademark Credits
Adobe®, Adobe Photoshop®, Acrobat®, and PostScript® are trademarks of Adobe Systems Incorporated.
Apple and the Apple logo are trademarks of Apple Computer, Inc., registered in the U.S. and other countries. iPod is a trademark of Apple Computer, Inc. iPod is for legal or rightholder-authorized copying only. Don’t steal music.
Microsoft®, Windows®, Windows® XP, and Windows Vista® are U.S. registered trademarks of Microsoft Corporation.
UNIX® is a registered trademark of The Open Group.
Conventions used in this guide
TIP: Tips provide helpful hints or shortcuts.
NOTE: Notes provide important information to explain a concept or to complete a task.
CAUTION: Cautions indicate procedures that you should follow to avoid losing data or damaging the product.
WARNING! Warnings alert you to specific procedures that you should follow to avoid personal injury, catastrophic loss of data, or extensive damage to the product.
Table of contents
1 Theory of operation ……………………………………………………………………………………………. |
1 |
Basic operation ………………………………………………………………………………………………………… |
2 |
Function structure ………………………………………………………………………………………… |
2 |
Operation sequence …………………………………………………………………………………….. |
2 |
Engine control system ………………………………………………………………………………………………… |
4 |
DC controller PCA ……………………………………………………………………………………….. |
5 |
Motor control ………………………………………………………………………………… |
6 |
Motor locations ………………………………………………………………… |
7 |
Failure detection ………………………………………………………………. |
7 |
Fan control …………………………………………………………………………………… |
8 |
Fan locations …………………………………………………………………… |
9 |
Failure detection ………………………………………………………………. |
9 |
Low-voltage power-supply PCA ……………………………………………………………………… |
10 |
Over-current/over-voltage/overload protection …………………………………….. |
11 |
Safety interruption ………………………………………………………………………… |
11 |
Power supply voltage detection ………………………………………………………… |
11 |
Sleep mode ………………………………………………………………………………… |
12 |
Power supply illumination control ……………………………………………………… |
12 |
High-voltage power-supply PCA …………………………………………………………………….. |
13 |
Fuser control …………………………………………………………………………………………….. |
15 |
Fuser temperature control ……………………………………………………………….. |
17 |
Fuser heater protective function ………………………………………………………… |
17 |
Fuser failure detection ……………………………………………………………………. |
18 |
Pressure roller cleaning ………………………………………………………………….. |
19 |
Laser scanner system ……………………………………………………………………………………………….. |
20 |
Laser scanner failure detection ………………………………………………………………………. |
21 |
Laser scanner safety function ………………………………………………………………………… |
21 |
Image-formation system …………………………………………………………………………………………….. |
22 |
Image-formation process ……………………………………………………………………………… |
23 |
Latent-image formation block …………………………………………………………… |
24 |
Step 1: primary charging ………………………………………………….. |
24 |
Step 2: laser-beam exposure ………………………………………………. |
25 |
Development block ……………………………………………………………………….. |
25 |
Step 3: developing ………………………………………………………….. |
25 |
Transfer block ……………………………………………………………………………… |
26 |
Step 4: image transfer ……………………………………………………… |
26 |
Step 5: separation from the drum ………………………………………… |
26 |
Fuser block …………………………………………………………………………………. |
27 |
Step 6: fusing ………………………………………………………………… |
27 |
Drum-cleaning block ……………………………………………………………………… |
27 |
Step 7: drum cleaning ……………………………………………………… |
27 |
Toner cartridge …………………………………………………………………………………………. |
27 |
Other image-formation functions ……………………………………………………………………. |
29 |
Drum discharge …………………………………………………………………………… |
29 |
Transfer roller cleaning ………………………………………………………………….. |
29 |
Environment change control …………………………………………………………….. |
30 |
Pickup, feed, and delivery system ………………………………………………………………………………… |
31 |
Pickup and feed block ………………………………………………………………………………… |
34 |
Cassette pickup ……………………………………………………………………………. |
35 |
Cassette media-size detection and cassette-presence detection ………………….. |
35 |
Cassette lift operation ……………………………………………………………………. |
36 |
Lift-up operation ……………………………………………………………… |
36 |
Lift-down operation ………………………………………………………….. |
36 |
Cassette media-presence detection ……………………………………………………. |
37 |
Cassette multiple-feed prevention ………………………………………………………. |
37 |
MP tray pickup ……………………………………………………………………………. |
39 |
MP tray media-presence detection …………………………………………………….. |
39 |
MP tray multiple-feed prevention ………………………………………………………. |
40 |
Feed-speed control ……………………………………………………………………….. |
40 |
Skew-feed prevention …………………………………………………………………….. |
42 |
Media-length detection ………………………………………………………………….. |
43 |
Fuse and delivery block ………………………………………………………………………………. |
44 |
Loop control ……………………………………………………………………………….. |
44 |
Output bin media-full detection ………………………………………………………… |
46 |
Jam detection …………………………………………………………………………………………… |
47 |
No pick jam 1 …………………………………………………………………………….. |
47 |
Feed stay jam 1 …………………………………………………………………………… |
48 |
Fuser output delay jam 1 ………………………………………………………………… |
48 |
Fuser output stay jam 1 ………………………………………………………………….. |
48 |
Output delay jam 1 ………………………………………………………………………. |
48 |
Output delay jam 2 ………………………………………………………………………. |
48 |
Output stay jam 1 ………………………………………………………………………… |
48 |
Residual paper jam 1 ……………………………………………………………………. |
49 |
Fuser wrap jam 1 …………………………………………………………………………. |
49 |
Door open jam 1 …………………………………………………………………………. |
49 |
Multiple-feed jam 1 ………………………………………………………………………. |
49 |
Automatic delivery …………………………………………………………………………………….. |
49 |
500-sheet paper feeder (Tray 4) …………………………………………………………………………………. |
50 |
500-sheet paper feeder motor control ……………………………………………………………… |
51 |
500-sheet paper feeder failure detection …………………………………………….. |
51 |
500-sheet paper feeder pickup and feed operation …………………………………………….. |
52 |
500-sheet paper feeder cassette pickup ……………………………………………… |
53 |
500-sheet paper feeder cassette media-size detection and cassette-presence |
|
detection ……………………………………………………………………………………. |
53 |
500-sheet paper feeder lift-up operation …………………………………………….. |
54 |
500-sheet paper feeder cassette media-presence detection ………………………. |
55 |
500-sheet paper feeder cassette multiple-feed prevention ………………………… |
55 |
500-sheet paper feeder jam detection …………………………………………………………….. |
56 |
No pick jam 2 …………………………………………………………………………….. |
56 |
Residual paper jam 1 ……………………………………………………………………. |
56 |
Door open jam 1 …………………………………………………………………………. |
57 |
500-sheet paper feeder automatic delivery ……………………………………………………….. |
57 |
1×500 and 3×500 paper feeder and stand …………………………………………………………………… |
58 |
Paper deck motor control …………………………………………………………………………….. |
61 |
Paper deck failure detection ……………………………………………………………. |
61 |
Paper deck pickup-and-feed operation …………………………………………………………….. |
61 |
Paper deck cassette media-size detection and cassette-presence detection ……. |
63 |
Paper deck lift-up operation …………………………………………………………….. |
64 |
Paper deck cassette media-presence detection ……………………………………… |
65 |
Paper deck jam detection …………………………………………………………………………….. |
65 |
No pick jam 2 …………………………………………………………………………….. |
65 |
No pick jam 3 (3×500-sheet paper deck only) ……………………………………… |
66 |
Residual paper jam 1 ……………………………………………………………………. |
66 |
Door open jam 1 …………………………………………………………………………. |
66 |
Paper deck automatic delivery ………………………………………………………………………. |
66 |
3,500-sheet high-capacity input (HCI) feeder ………………………………………………………………….. |
67 |
HCI motor control ………………………………………………………………………………………. |
69 |
HCI failure detection ……………………………………………………………………… |
69 |
HCI pickup-and-feed operation ……………………………………………………………………… |
70 |
HCI cassette media-size detection and cassette-presence detection …………….. |
71 |
HCI lift-up operation ……………………………………………………………………… |
72 |
HCI cassette media-presence detection ………………………………………………. |
72 |
HCI jam detection ……………………………………………………………………………………… |
74 |
No pick jam 2 …………………………………………………………………………….. |
74 |
No pick jam 3 …………………………………………………………………………….. |
74 |
Residual paper jam 1 ……………………………………………………………………. |
75 |
Door open jam 1 …………………………………………………………………………. |
75 |
HCI automatic delivery ……………………………………………………………………………….. |
75 |
Duplexer ………………………………………………………………………………………………………………. |
76 |
Duplexer motor control ……………………………………………………………………………….. |
77 |
Duplexer motor failure detection ……………………………………………………….. |
77 |
Duplexer fan control …………………………………………………………………………………… |
78 |
Duplexer fan failure detection ………………………………………………………….. |
78 |
Duplexer reverse and feed operation ………………………………………………………………. |
78 |
Duplexer reverse and feed operation sequence …………………………………….. |
79 |
Side misregistration detection ………………………………………………………….. |
80 |
Side misregistration failure detection …………………………………….. |
82 |
Duplexer jam detection ……………………………………………………………………………….. |
82 |
Fuser output stay jam 2 ………………………………………………………………….. |
82 |
Reverse jam 1 ……………………………………………………………………………… |
83 |
Duplex re-pickup jam 1 ………………………………………………………………….. |
83 |
Duplex re-pickup jam 2 ………………………………………………………………….. |
83 |
Duplex re-pickup jam 3 ………………………………………………………………….. |
83 |
Residual paper jam 1 ……………………………………………………………………. |
83 |
Duplexer automatic delivery …………………………………………………………………………. |
83 |
2 Solve problems ………………………………………………………………………………………………… |
85 |
Solve problems checklist …………………………………………………………………………………………… |
86 |
Menu map ……………………………………………………………………………………………………………. |
88 |
Preboot menu options ………………………………………………………………………………………………. |
89 |
Current settings pages ……………………………………………………………………………………………… |
97 |
Troubleshooting process ……………………………………………………………………………………………. |
98 |
Determine the problem source ……………………………………………………………………….. |
98 |
Troubleshooting flowchart ………………………………………………………………. |
98 |
Power subsystem ……………………………………………………………………………………….. |
99 |
Power-on checks ………………………………………………………………………….. |
99 |
Power-on troubleshooting overview ………………………………………. |
99 |
Tools for troubleshooting …………………………………………………………………………………………. |
101 |
Individual component diagnostics …………………………………………………………………. |
101 |
LED diagnostics ………………………………………………………………………….. |
101 |
Understand lights on the formatter ……………………………………… |
101 |
Engine diagnostics ……………………………………………………………………… |
104 |
Engine-test button ………………………………………………………….. |
104 |
Paper path test …………………………………………………………………………… |
106 |
Paper path sensor tests ………………………………………………………………… |
106 |
Manual sensor tests …………………………………………………………………….. |
108 |
Cartridge door switch (SW3) ……………………………………………. |
110 |
Left door switch (SW1) ……………………………………………………. |
111 |
Right door sensor (SR8) …………………………………………………… |
112 |
Cartridge install sensor (SR1) ……………………………………………. |
113 |
Top (top-of-page) sensor (SR9) ………………………………………….. |
114 |
Fuser loop sensor (SR6) …………………………………………………… |
115 |
Fuser output sensor (SR12) ………………………………………………. |
116 |
Duplex switchback sensor (SR1) ………………………………………… |
117 |
Duplexer refeed sensor (SR2) ……………………………………………. |
118 |
Tray 4 feed sensor (SR1) …………………………………………………. |
119 |
Output sensor (SR3) ……………………………………………………….. |
120 |
Tray/bin manual sensor tests …………………………………………………………. |
121 |
Main product trays ………………………………………………………… |
123 |
Optional 500-sheet paper tray (Tray 4) ……………………………….. |
131 |
1×500 and 3×500 paper deck trays ………………………………….. |
136 |
HCI trays …………………………………………………………………….. |
138 |
Print/stop test ……………………………………………………………………………. |
144 |
Component tests …………………………………………………………………………. |
145 |
Control-panel tests …………………………………………………………. |
145 |
Half self-test …………………………………………………………………. |
145 |
Drum rotation test check ………………………………………………….. |
146 |
Component test (special-mode test) …………………………………….. |
146 |
Diagrams ………………………………………………………………………………………………. |
148 |
Block diagrams ………………………………………………………………………….. |
148 |
Location of connectors …………………………………………………………………. |
153 |
DC controller connections ………………………………………………… |
153 |
Plug/jack locations ……………………………………………………………………… |
155 |
Locations of major components ………………………………………………………. |
156 |
General timing charts ………………………………………………………………….. |
171 |
Circuit diagrams ………………………………………………………………………… |
172 |
Internal test pages ……………………………………………………………………………………. |
174 |
Clean the paper path ………………………………………………………………….. |
174 |
Set up an auto cleaning page …………………………………………… |
174 |
Print a configuration page …………………………………………………………….. |
175 |
Configuration page ……………………………………………………….. |
175 |
HP embedded Jetdirect page ……………………………………………. |
176 |
Finding important information on the configuration pages ………… |
177 |
Control panel menus …………………………………………………………………………………. |
178 |
Administration menu ……………………………………………………………………. |
178 |
Reports menu ……………………………………………………………….. |
178 |
General Settings menu ……………………………………………………. |
179 |
General Print Settings menu ……………………………………………… |
185 |
Default Print Options menu ………………………………………………. |
188 |
Display Settings menu …………………………………………………….. |
189 |
Manage Supplies menu ………………………………………………….. |
191 |
Manage Trays menu ………………………………………………………. |
192 |
Network Settings menu …………………………………………………… |
194 |
Troubleshooting menu …………………………………………………….. |
208 |
Device Maintenance menu ……………………………………………………………. |
210 |
Backup/Restore menu …………………………………………………….. |
210 |
Calibration/Cleaning menu ……………………………………………… |
211 |
USB Firmware Upgrade menu …………………………………………… |
212 |
Service menu ……………………………………………………………….. |
212 |
Interpret control-panel messages ………………………………………………………………….. |
213 |
Control-panel message types …………………………………………………………. |
213 |
Control-panel messages ……………………………………………………………….. |
213 |
11.00.YY Internal clock error To continue, touch “OK” ……………. |
213 |
20.00.00 Insufficient memory: <Device> To continue, touch “OK” 213 |
|
21.00.00 Page too complex To continue, touch “OK” …………….. |
214 |
33.WX.YZ Used board/disk installed …………………………………. |
214 |
40.00.01 USB I/O buffer overflow To continue, touch “OK” …….. |
214 |
40.00.02 Embedded I/O buffer overflow To continue, touch “OK” 214 |
|
40.00.03 EIO <X> buffer overflow To continue, touch “OK” …….. |
214 |
40.00.04 EIO <X> bad transmission To continue, touch “OK” ….. |
215 |
40.00.05 Embedded I/O bad transmission To continue, touch |
|
“OK” …………………………………………………………………………. |
215 |
41.03.YZ Unexpected size in Tray <X> ………………………………. |
215 |
41.03.YZ Unexpected size in Tray <X> To use another tray, touch |
|
«Options» ……………………………………………………………………. |
216 |
41.05.YZ Unexpected type in Tray <X> ………………………………. |
216 |
41.05.YZ Unexpected type in Tray <X> To use another tray, |
|
touch «Options» ……………………………………………………………. |
217 |
41.WX.YZ Error To use another tray, touch «Options» …………….. |
218 |
47.FC.YZ Printer calibration failed To continue, touch “OK” ……… |
220 |
47.WX.YZ Printer calibration failed ……………………………………. |
221 |
49.XX.YY Error To continue turn off then on ………………………….. |
221 |
50.WX.YZ Fuser error To continue turn off then on …………………. |
221 |
51.00.YY Error To continue turn off then on ………………………….. |
225 |
52.00.00 Error To continue turn off then on …………………………. |
225 |
52.00.20 Error To continue turn off then on …………………………. |
226 |
52.<XX>.00 Error To continue turn off then on ………………………. |
226 |
54.XX.YY Error …………………………………………………………….. |
226 |
55.XX.YY DC controller error To continue turn off then on ………… |
227 |
56.00.YY Error To continue turn off then on ………………………….. |
227 |
57.00.0X Error …………………………………………………………….. |
228 |
58.00.04 Error To continue turn off then on …………………………. |
228 |
59.00.00 Error To continue turn off then on …………………………. |
228 |
59.00.20 Error To continue turn off then on …………………………. |
229 |
59.00.30 Error To continue turn off then on …………………………. |
229 |
59.00.40 Error To continue turn off then on …………………………. |
229 |
59.05.50 Error To continue turn off then on …………………………. |
229 |
59.05.60 Error To continue turn off then on …………………………. |
230 |
60.00.0Y Tray <Y> lifting error ………………………………………… |
230 |
62.00.00 No system To continue turn off then on …………………… |
230 |
69.11.YY Error To continue, touch “OK” ……………………………… |
231 |
70.00.00 Error To continue turn off then on …………………………. |
231 |
81.WX.YZ Embedded JetDirect Error To continue turn off then on . . |
231 |
81.YY.YY EIO Error To continue turn off then on ……………………. |
232 |
98.00.0X Corrupt data in X volume ……………………………………. |
232 |
<Binname> full Remove all paper from bin …………………………… |
232 |
Bad optional tray connection ……………………………………………. |
233 |
Black Cartridge low ……………………………………………………….. |
233 |
Black Cartridge very low …………………………………………………. |
233 |
Black Cartridge very low To continue, touch “OK” …………………. |
233 |
Card slot device failure To clear touch “Clear” ……………………… |
234 |
Card slot file operation failed To clear touch “Clear” ………………. |
234 |
Card slot file system is full To clear touch “Clear” …………………… |
234 |
Card slot is write protected To clear touch “Clear” …………………. |
234 |
Card slot not initialized To clear touch “Clear” ……………………… |
234 |
Cartridge ship mode ………………………………………………………. |
235 |
Chosen personality not available To continue, touch “OK” ……….. |
235 |
Cleaning disk <X>% complete Do not power off ……………………. |
235 |
Close left door ……………………………………………………………… |
235 |
Close top cover …………………………………………………………….. |
236 |
Data received ………………………………………………………………. |
236 |
Disk full Delete stored jobs ……………………………………………….. |
236 |
Disk low Delete stored jobs ………………………………………………. |
236 |
EIO <X> disk not functional ……………………………………………… |
237 |
EIO <X> disk spinning up ………………………………………………… |
237 |
EIO device failure To clear touch “Clear” …………………………….. |
237 |
EIO file operation failed To clear touch “Clear” …………………….. |
237 |
EIO file system is full To clear touch “Clear” …………………………. |
237 |
EIO is write protected To clear touch “Clear” ………………………… |
238 |
EIO not initialized To clear touch “Clear” …………………………….. |
238 |
Event log is empty …………………………………………………………. |
238 |
Fuser Kit Low ……………………………………………………………….. |
238 |
Fuser Kit very low ………………………………………………………….. |
238 |
Fuser Kit very low To continue, touch “OK” ………………………….. |
239 |
Incompatible <supply> ……………………………………………………. |
239 |
Incompatible supplies …………………………………………………….. |
239 |
Initializing… ………………………………………………………………… |
240 |
Install Black Cartridge …………………………………………………….. |
240 |
Install Fuser Unit ……………………………………………………………. |
240 |
Install supplies ……………………………………………………………… |
240 |
Internal disk device failure To clear touch “Clear” ………………….. |
240 |
Internal disk file operation failed To clear touch “Clear” …………… |
241 |
Internal disk file system is full To clear touch “Clear” ……………….. |
241 |
Internal disk is write protected To clear touch “Clear” ……………… |
241 |
Internal disk not found ……………………………………………………. |
241 |
Internal disk not functional ……………………………………………….. |
241 |
Internal disk not initialized To clear touch “Clear” ………………….. |
242 |
Internal disk spinning up …………………………………………………. |
242 |
Load Tray 1 [Type] [Size] ………………………………………………… |
242 |
Load Tray 1 [Type] [Size] To continue, touch “OK” …………………. |
242 |
Load Tray <X>: [Size] …………………………………………………….. |
242 |
Load Tray <X>: [Size] To continue, touch “OK” …………………….. |
243 |
Load Tray <X>: [Size] To use another tray, touch «Options» ……… |
243 |
Load Tray <X>: [Type], [Size] …………………………………………… |
243 |
Load Tray <X>: [Type], [Size] To use another tray, touch |
|
«Options» ……………………………………………………………………. |
244 |
Manually feed output stack Then touch «OK» to print second sides |
244 |
Manually feed: [Size] …………………………………………………….. |
245 |
Manually feed: [Size] To continue, touch “OK” ……………………… |
245 |
Manually feed: [Size] To use another tray, touch «Options» ………. |
245 |
Manually feed: [Type], [Size] To continue, touch “OK” ……………. |
246 |
Manually feed: [Type], [Size] To use another tray, touch |
|
«Options» ……………………………………………………………………. |
246 |
No job to cancel …………………………………………………………… |
246 |
Output Bin full ………………………………………………………………. |
246 |
Paperless mode …………………………………………………………….. |
247 |
Printing Engine Test… …………………………………………………….. |
247 |
Printing stopped To continue, touch “OK” …………………………….. |
247 |
RAM Disk device failure To clear touch “Clear” …………………….. |
247 |
RAM Disk file operation failed To clear touch “Clear” ……………… |
247 |
RAM Disk file system is full To clear touch “Clear” ………………….. |
248 |
RAM Disk is write protected To clear touch “Clear” ………………… |
248 |
RAM Disk not initialized To clear touch “Clear” …………………….. |
248 |
Remove cartridge lock ……………………………………………………. |
248 |
Remove the toner cartridge ………………………………………………. |
248 |
Replace Black Cartridge ………………………………………………….. |
249 |
Replace Fuser Kit …………………………………………………………… |
249 |
Replace supplies …………………………………………………………… |
249 |
ROM disk device failed To clear touch “Clear” ……………………… |
250 |
ROM disk file operation failed To clear touch “Clear” ……………… |
250 |
ROM disk file system is full To clear touch “Clear” ………………….. |
250 |
ROM disk is write protected To clear touch “Clear” ………………… |
250 |
ROM disk not initialized To clear touch “Clear” …………………….. |
250 |
Size mismatch in Tray <X> ………………………………………………. |
251 |
Standard bin full Remove all paper from bin …………………………. |
251 |
Supplies low ………………………………………………………………… |
251 |
Supplies very low To continue, touch “OK” …………………………… |
251 |
Supply memory warning …………………………………………………. |
252 |
Tray <X> empty: [Size] …………………………………………………… |
252 |
Tray <X> empty: [Type], [Size] …………………………………………. |
252 |
Tray <X> open ……………………………………………………………… |
252 |
Tray <X> overfilled Remove excess paper ……………………………. |
253 |
Tray <X> overfilled To use another tray, touch «Options» …………. |
253 |
Type mismatch Tray <X> …………………………………………………. |
253 |
Unable to cancel firmware update job ………………………………… |
254 |
Unable to install the firmware …………………………………………… |
254 |
Unsupported drive installed ……………………………………………… |
254 |
Unsupported supply in use ……………………………………………….. |
254 |
Unsupported supply installed ……………………………………………. |
255 |
Unsupported supply installed To continue, touch “OK” …………….. |
255 |
Unsupported tray configuration …………………………………………. |
255 |
Unsupported USB accessory detected Remove USB accessory ……. |
255 |
Upgrade complete To continue turn off then on ……………………… |
256 |
USB accessory needs too much power Remove USB and turn off |
|
then on ………………………………………………………………………. |
256 |
USB accessory not functional ……………………………………………. |
256 |
USB hubs are not fully supported Some operations may not work |
|
properly ……………………………………………………………………… |
256 |
USB is write protected To clear touch “Clear” ……………………….. |
256 |
USB not initialized To clear touch “Clear” ……………………………. |
257 |
USB storage accessory removed Clearing any associated data ….. |
257 |
USB storage device failure To clear touch “Clear” ………………….. |
257 |
USB storage file operation failed To clear touch “Clear” ………….. |
257 |
USB storage file system is full To clear touch “Clear” ………………. |
257 |
Used supply in use ………………………………………………………… |
257 |
Used supply installed To continue, touch “OK” ………………………. |
258 |
Event log messages ………………………………………………………………………………….. |
259 |
Print or view an event log ……………………………………………………………… |
260 |
Clear an event log ………………………………………………………………………. |
260 |
Event log message table ……………………………………………………………….. |
260 |
Clear jams ………………………………………………………………………………………………………….. |
263 |
Jam locations ………………………………………………………………………………………….. |
263 |
Auto-navigation for clearing jams …………………………………………………………………. |
263 |
Clear jams in the output-bin area …………………………………………………………………. |
264 |
Clear jams in Tray 1 …………………………………………………………………………………. |
264 |
Clear jams in Tray 2 or Tray 3 …………………………………………………………………….. |
265 |
Clear jams in the 500-sheet trays …………………………………………………………………. |
267 |
Clear jams in the 3,500-sheet high-capacity tray ………………………………………………. |
268 |
Clear jams from the toner-cartridge area ………………………………………………………… |
271 |
Clear jams in the fuser ………………………………………………………………………………. |
274 |
Clear jams from the duplexer ………………………………………………………………………. |
276 |
Solve paper-handling problems …………………………………………………………………………………. |
277 |
The product picks up multiple sheets of paper ………………………………………………….. |
277 |
The product does not pick up paper ……………………………………………………………… |
277 |
Use manual print modes …………………………………………………………………………………………. |
278 |
Print quality troubleshooting tools ………………………………………………………………………………. |
280 |
Repetitive defects measurements …………………………………………………………………… |
280 |
Solve image-quality problems …………………………………………………………………………………… |
281 |
Image defect examples ……………………………………………………………………………… |
281 |
Clean the product …………………………………………………………………………………………………. |
289 |
Print a cleaning page ……………………………………………………………………………….. |
289 |
Solve performance problems ……………………………………………………………………………………. |
290 |
Solve connectivity problems ……………………………………………………………………………………… |
291 |
Solve USB connection problems …………………………………………………………………… |
291 |
Solve wired network problems …………………………………………………………………….. |
291 |
The product has a poor physical connection. ……………………………………… |
291 |
The computer is using the incorrect IP address for the product …………………. |
291 |
The computer is unable to communicate with the product ………………………. |
292 |
The product is using incorrect link and duplex settings for the network ………. |
292 |
New software programs might be causing compatibility problems ……………. |
292 |
The computer or workstation might be set up incorrectly ………………………… |
292 |
The product is disabled, or other network settings are incorrect ……………….. |
292 |
Service mode functions …………………………………………………………………………………………… |
293 |
Service menu ………………………………………………………………………………………….. |
293 |
Product resets …………………………………………………………………………………………. |
294 |
Restore factory-set defaults …………………………………………………………….. |
294 |
Restore the service ID …………………………………………………………………… |
294 |
Product cold reset ……………………………………………………………………….. |
295 |
Format Disk and Partial Clean functions …………………………………………………………. |
296 |
Active and repository firmware locations …………………………………………… |
296 |
Partial Clean …………………………………………………………………………….. |
296 |
Execute a 3 Partial Clean ………………………………………………… |
297 |
Format Disk ………………………………………………………………………………. |
297 |
Execute a 2 Format Disk ………………………………………………….. |
298 |
Product firmware upgrades ……………………………………………………………………………………… |
299 |
Determine the installed revision of firmware …………………………………………………….. |
299 |
Perform a firmware upgrade ……………………………………………………………………….. |
299 |
Embedded Web Server ………………………………………………………………… |
299 |
USB storage device (Preboot menu) …………………………………………………. |
300 |
USB storage device (control-panel menu) …………………………………………… |
302 |
Appendix A Service and support …………………………………………………………………………. |
303 |
Hewlett-Packard limited warranty statement ………………………………………………………………….. |
304 |
HP’s Premium Protection Warranty: LaserJet toner cartridge limited warranty statement …………….. |
306 |
HP policy on non-HP supplies …………………………………………………………………………………… |
307 |
HP anticounterfeit Web site ……………………………………………………………………………………… |
308 |
Data stored on the toner cartridge ……………………………………………………………………………… |
309 |
End User License Agreement …………………………………………………………………………………….. |
310 |
OpenSSL …………………………………………………………………………………………………………….. |
313 |
Customer self-repair warranty service …………………………………………………………………………. |
314 |
Customer support ………………………………………………………………………………………………….. |
315 |
Appendix B Product specifications ……………………………………………………………………….. |
317 |
Physical specifications ……………………………………………………………………………………………. |
318 |
Power consumption, electrical specifications, and acoustic emissions …………………………………… |
318 |
Environmental specifications …………………………………………………………………………………….. |
318 |
Appendix C Regulatory information ……………………………………………………………………… |
319 |
FCC regulations ……………………………………………………………………………………………………. |
320 |
Environmental product stewardship program ………………………………………………………………… |
321 |
Protecting the environment ………………………………………………………………………….. |
321 |
Ozone production ……………………………………………………………………………………. |
321 |
Power consumption ………………………………………………………………………………….. |
321 |
Toner consumption …………………………………………………………………………………… |
321 |
Paper use ………………………………………………………………………………………………. |
321 |
Plastics ………………………………………………………………………………………………….. |
321 |
HP LaserJet print supplies …………………………………………………………………………… |
322 |
Return and recycling instructions ………………………………………………………………….. |
322 |
United States and Puerto Rico ………………………………………………………… |
322 |
Multiple returns (more than one cartridge) ……………………………. |
322 |
Single returns ……………………………………………………………….. |
322 |
Shipping …………………………………………………………………….. |
322 |
Non-U.S. returns ………………………………………………………………………… |
323 |
Paper …………………………………………………………………………………………………… |
323 |
Material restrictions ………………………………………………………………………………….. |
323 |
Disposal of waste equipment by users ……………………………………………………………. |
324 |
Electronic hardware recycling ……………………………………………………………………… |
324 |
Chemical substances ………………………………………………………………………………… |
324 |
Material Safety Data Sheet (MSDS) ………………………………………………………………. |
324 |
For more information ………………………………………………………………………………… |
324 |
Declaration of conformity ………………………………………………………………………………………… |
326 |
Safety statements ………………………………………………………………………………………………….. |
328 |
Laser safety ……………………………………………………………………………………………. |
328 |
Canadian DOC regulations ………………………………………………………………………… |
328 |
VCCI statement (Japan) ……………………………………………………………………………… |
328 |
Power cord instructions ……………………………………………………………………………… |
328 |
Power cord statement (Japan) ……………………………………………………………………… |
328 |
EMC statement (China) ……………………………………………………………………………… |
329 |
EMC statement (Korea) ……………………………………………………………………………… |
329 |
EMI statement (Taiwan) ……………………………………………………………………………… |
329 |
Laser statement for Finland …………………………………………………………………………. |
329 |
GS statement (Germany) ……………………………………………………………………………. |
331 |
Substances Table (China) …………………………………………………………………………… |
331 |
Restriction on Hazardous Substances statement (Turkey) ……………………………………… |
331 |
Restriction on Hazardous Substances statement (Ukraine) ……………………………………. |
331 |
Index ………………………………………………………………………………………………………………. |
333 |
List of tables
Table 1-1 Operation sequence ………………………………………………………………………………………………… |
3 |
Table 1-2 Motor locations ………………………………………………………………………………………………………. |
7 |
Table 1-3 Fan locations …………………………………………………………………………………………………………. |
9 |
Table 1-4 Low voltage power supply DC power specifications ………………………………………………………… |
10 |
Table 1-5 Pickup, feed, and delivery system sensors and switches ……………………………………………………. |
32 |
Table 1-6 Pickup, feed, and delivery system solenoid and motors ……………………………………………………. |
33 |
Table 1-7 Media switch combinations ……………………………………………………………………………………… |
36 |
Table 1-8 500-sheet paper feeder electrical components ………………………………………………………………. |
51 |
Table 1-9 500-sheet paper feeder motors …………………………………………………………………………………. |
51 |
Table 1-10 500-sheet paper feeder pickup and feed components ……………………………………………………. |
52 |
Table 1-11 500-sheet paper feeder media switch combinations ………………………………………………………. |
54 |
Table 1-12 Paper deck electrical components …………………………………………………………………………….. |
59 |
Table 1-13 Paper deck motors ……………………………………………………………………………………………….. |
61 |
Table 1-14 Paper deck pickup-and-feed operation components ………………………………………………………. |
62 |
Table 1-15 Paper deck media switch combinations ……………………………………………………………………… |
63 |
Table 1-16 HCI electrical components ……………………………………………………………………………………… |
68 |
Table 1-17 HCI motors ………………………………………………………………………………………………………… |
69 |
Table 1-18 HCI pickup-and-feed operation components ………………………………………………………………… |
70 |
Table 1-19 Duplexer electrical components ……………………………………………………………………………….. |
77 |
Table 1-20 Duplexer motor …………………………………………………………………………………………………… |
77 |
Table 1-21 Duplexer fan ………………………………………………………………………………………………………. |
78 |
Table 1-22 Duplexer reverse and feed components ……………………………………………………………………… |
79 |
Table 2-1 Preboot menu options (1 of 6) …………………………………………………………………………………… |
90 |
Table 2-2 Preboot menu options (2 of 6) …………………………………………………………………………………… |
92 |
Table 2-3 Preboot menu options (3 of 6) …………………………………………………………………………………… |
93 |
Table 2-4 Preboot menu options (4 of 6) …………………………………………………………………………………… |
94 |
Table 2-5 Preboot menu options (5 of 6) …………………………………………………………………………………… |
94 |
Table 2-6 Preboot menu options (6 of 6) …………………………………………………………………………………… |
95 |
Table 2-7 Troubleshooting flowchart ………………………………………………………………………………………… |
98 |
Table 2-8 Heartbeat LED, product initialization …………………………………………………………………………. |
102 |
Table 2-9 Paper-path sensors ……………………………………………………………………………………………….. |
107 |
Table 2-10 Manual sensor tests ……………………………………………………………………………………………. |
108 |
Table 2-11 Tray/bin manual sensor test ………………………………………………………………………………….. |
121 |
Table 2-12 Component tests ………………………………………………………………………………………………… |
146 |
Table 2-13 Product cross section …………………………………………………………………………………………… |
148 |
Table 2-14 Optional paper feeder (Tray 4) cross section …………………………………………………………….. |
149 |
Table 2-15 1×500-sheet paper deck cross section ……………………………………………………………………… |
150 |
Table 2-16 3×500-sheet paper deck cross section ……………………………………………………………………… |
151 |
Table 2-17 3,500-sheet HCI cross section ……………………………………………………………………………….. |
152 |
Table 2-18 DC controller connections …………………………………………………………………………………….. |
153 |
Table 2-19 Plug/jack locations …………………………………………………………………………………………….. |
155 |
Table 2-20 External component locations ………………………………………………………………………………… |
156 |
Table 2-21 Major component locations (1 of 3) ………………………………………………………………………… |
157 |
Table 2-22 Major component locations (2 of 3) ………………………………………………………………………… |
158 |
Table 2-23 Major component locations (3 of 3) ………………………………………………………………………… |
158 |
Table 2-24 PCA locations …………………………………………………………………………………………………… |
159 |
Table 2-25 Motor locations …………………………………………………………………………………………………. |
160 |
Table 2-26 Fan locations ……………………………………………………………………………………………………. |
160 |
Table 2-27 Roller locations ………………………………………………………………………………………………….. |
161 |
Table 2-28 500-sheet feeder external component locations ………………………………………………………….. |
162 |
Table 2-29 500-sheet feeder internal component locations …………………………………………………………… |
163 |
Table 2-30 1×500 paper deck external component locations ……………………………………………………….. |
164 |
Table 2-31 1×500 paper deck internal component locations ………………………………………………………… |
165 |
Table 2-32 3×500 paper deck external component locations ……………………………………………………….. |
166 |
Table 2-33 3×500 paper deck internal component locations ………………………………………………………… |
167 |
Table 2-34 HCI external component locations ………………………………………………………………………….. |
168 |
Table 2-35 HCI internal component locations (1 of 2) ………………………………………………………………… |
169 |
Table 2-36 HCI internal component locations (2 of 2) ………………………………………………………………… |
170 |
Table 2-37 Important information on the configuration pages ……………………………………………………….. |
177 |
Table 2-38 Reports menu …………………………………………………………………………………………………. |
178 |
Table 2-39 General Settings menu ……………………………………………………………………………………. |
179 |
Table 2-40 General Print Settings menu ……………………………………………………………………………. |
186 |
Table 2-41 Default Print Options menu ……………………………………………………………………………… |
188 |
Table 2-42 Display Settings menu …………………………………………………………………………………….. |
190 |
Table 2-43 Manage Supplies menu …………………………………………………………………………………… |
191 |
Table 2-44 Manage Trays menu ……………………………………………………………………………………….. |
193 |
Table 2-45 Network Settings menu …………………………………………………………………………………… |
195 |
Table 2-46 Jetdirect Menu ………………………………………………………………………………………………. |
195 |
Table 2-47 Troubleshooting menu …………………………………………………………………………………….. |
208 |
Table 2-48 Backup/Restore menu …………………………………………………………………………………….. |
211 |
Table 2-49 Calibration/Cleaning menu ……………………………………………………………………………… |
211 |
Table 2-50 Print modes under the Adjust Paper Types sub menu ………………………………………………. |
278 |
Table 2-51 MP modes under the Optimize submenu ………………………………………………………………… |
279 |
Table 2-52 Image defect examples ……………………………………………………………………………………….. |
281 |
Table 2-53 Solve performance problems …………………………………………………………………………………. |
290 |
Table B-1 Product dimensions and weights ………………………………………………………………………………. |
318 |
Table B-2 Product dimensions with all doors and trays fully opened ……………………………………………….. |
318 |
Table B-3 Operating-environment specifications ………………………………………………………………………… |
318 |
List of figures
Figure 1-1 Function structure ……………………………………………………………………………………………………. |
2 |
Figure 1-2 Engine control system ………………………………………………………………………………………………. |
4 |
Figure 1-3 DC controller PCA ………………………………………………………………………………………………….. |
5 |
Figure 1-4 Motor locations ……………………………………………………………………………………………………… |
7 |
Figure 1-5 Fan locations ………………………………………………………………………………………………………… |
9 |
Figure 1-6 Low-voltage power-supply PCA ………………………………………………………………………………… |
10 |
Figure 1-7 High-voltage power-supply PCA ……………………………………………………………………………….. |
13 |
Figure 1-8 Fuser components …………………………………………………………………………………………………. |
15 |
Figure 1-9 Fuser control system ………………………………………………………………………………………………. |
16 |
Figure 1-10 Laser scanner system ……………………………………………………………………………………………. |
20 |
Figure 1-11 Image-formation system ………………………………………………………………………………………… |
22 |
Figure 1-12 Image-formation components …………………………………………………………………………………. |
23 |
Figure 1-13 Image-formation process ………………………………………………………………………………………. |
24 |
Figure 1-14 Primary charging ………………………………………………………………………………………………… |
24 |
Figure 1-15 Laser-beam exposure …………………………………………………………………………………………… |
25 |
Figure 1-16 Developing ……………………………………………………………………………………………………….. |
25 |
Figure 1-17 Image transfer ……………………………………………………………………………………………………. |
26 |
Figure 1-18 Separation from the drum ……………………………………………………………………………………… |
26 |
Figure 1-19 Fusing ……………………………………………………………………………………………………………… |
27 |
Figure 1-20 Drum cleaning …………………………………………………………………………………………………… |
27 |
Figure 1-21 Toner cartridge components …………………………………………………………………………………… |
28 |
Figure 1-22 Drum discharge ………………………………………………………………………………………………….. |
29 |
Figure 1-23 Transfer roller cleaning ………………………………………………………………………………………… |
30 |
Figure 1-24 Pickup, feed, and delivery system ……………………………………………………………………………. |
31 |
Figure 1-25 Pickup, feed, and delivery system sensors and switches …………………………………………………. |
32 |
Figure 1-26 Pickup, feed, and delivery-system solenoid and motors ………………………………………………….. |
33 |
Figure 1-27 Pickup and feed block ………………………………………………………………………………………….. |
34 |
Figure 1-28 Cassette pickup mechanism …………………………………………………………………………………… |
35 |
Figure 1-29 Cassette lift operation ………………………………………………………………………………………….. |
37 |
Figure 1-30 Cassette multiple feed prevention ……………………………………………………………………………. |
38 |
Figure 1-31 MP tray pickup …………………………………………………………………………………………………… |
39 |
Figure 1-32 MP tray multiple-feed prevention ……………………………………………………………………………… |
40 |
Figure 1-33 Skew-feed prevention …………………………………………………………………………………………… |
42 |
Figure 1-34 Fuse and delivery block ………………………………………………………………………………………… |
44 |
Figure 1-35 Loop control ………………………………………………………………………………………………………. |
45 |
Figure 1-36 Output bin media-full detection ……………………………………………………………………………….. |
46 |
Figure 1-37 Product engine jam detection sensors and switches ………………………………………………………. |
47 |
Figure 1-38 500-sheet paper feeder paper path …………………………………………………………………………. |
50 |
Figure 1-39 500-sheet paper feeder signal flow …………………………………………………………………………. |
50 |
Figure 1-40 500-sheet paper feeder motor locations ……………………………………………………………………. |
51 |
Figure 1-41 500-sheet paper feeder pickup and feed components …………………………………………………… |
52 |
Figure 1-42 500-sheet paper feeder pickup and feed cassette pickup ………………………………………………. |
53 |
Figure 1-43 500-sheet paper feeder lift-up operation ……………………………………………………………………. |
54 |
Figure 1-44 500-sheet paper feeder multiple-feed prevention …………………………………………………………. |
56 |
Figure 1-45 500-sheet paper feeder cassette jam detection sensor …………………………………………………… |
56 |
Figure 1-46 Paper deck paper path ………………………………………………………………………………………… |
58 |
Figure 1-47 Paper deck signal flow …………………………………………………………………………………………. |
59 |
Figure 1-48 Paper deck motors ………………………………………………………………………………………………. |
61 |
Figure 1-49 Paper deck pickup and feed components ………………………………………………………………….. |
62 |
Figure 1-50 Paper deck lift-up operation …………………………………………………………………………………… |
64 |
Figure 1-51 Paper deck jam detection sensors ……………………………………………………………………………. |
65 |
Figure 1-52 HCI paper path ………………………………………………………………………………………………….. |
67 |
Figure 1-53 HCI signal flow ………………………………………………………………………………………………….. |
68 |
Figure 1-54 HCI motors ……………………………………………………………………………………………………….. |
69 |
Figure 1-55 HCI pickup-and-feed operation ……………………………………………………………………………….. |
70 |
Figure 1-56 HCI lift-up operation ……………………………………………………………………………………………. |
72 |
Figure 1-57 HCI jam detection sensors …………………………………………………………………………………….. |
74 |
Figure 1-58 Duplexer paper path ……………………………………………………………………………………………. |
76 |
Figure 1-59 Duplexer signal flow ……………………………………………………………………………………………. |
76 |
Figure 1-60 Duplexer motor ………………………………………………………………………………………………….. |
77 |
Figure 1-61 Duplexer fan ……………………………………………………………………………………………………… |
78 |
Figure 1-62 Duplexer reverse and feed operation ……………………………………………………………………….. |
79 |
Figure 1-63 Duplexer side misregistration detection …………………………………………………………………….. |
81 |
Figure 1-64 Duplexer jam detection sensors ………………………………………………………………………………. |
82 |
Figure 2-1 Locating the engine-test-page switch …………………………………………………………………………. |
105 |
Figure 2-2 Test the cartridge door switch ………………………………………………………………………………… |
110 |
Figure 2-3 Test the left door switch ………………………………………………………………………………………… |
111 |
Figure 2-4 Test the top sensor ………………………………………………………………………………………………. |
114 |
Figure 2-5 Fuser loop sensor ……………………………………………………………………………………………….. |
115 |
Figure 2-6 Fuser output sensor ……………………………………………………………………………………………… |
116 |
Figure 2-7 Duplex switchback sensor ……………………………………………………………………………………… |
117 |
Figure 2-8 Duplexer refeed sensor ………………………………………………………………………………………… |
118 |
Figure 2-9 Tray 4 feed sensor ………………………………………………………………………………………………. |
119 |
Figure 2-10 Output sensor ………………………………………………………………………………………………….. |
120 |
Figure 2-11 Tray 1 paper sensor ………………………………………………………………………………………….. |
123 |
Figure 2-12 Tray 2 paper sensor ………………………………………………………………………………………….. |
124 |
Figure 2-13 Tray 2 paper surface sensor ………………………………………………………………………………… |
125 |
Figure 2-14 Tray 2 paper size switches ………………………………………………………………………………….. |
126 |
Figure 2-15 Tray 3 paper sensor ………………………………………………………………………………………….. |
127 |
Figure 2-16 Tray 3 paper surface sensor ………………………………………………………………………………… |
128 |
Figure 2-17 Tray 3 paper size switches ………………………………………………………………………………….. |
129 |
Figure 2-18 Output bin full sensor …………………………………………………………………………………………. |
130 |
Figure 2-19 Tray 4 paper sensor ………………………………………………………………………………………….. |
131 |
Figure 2-20 Tray 4 paper surface sensor ………………………………………………………………………………… |
132 |
Figure 2-21 Tray 4 paper size switches ………………………………………………………………………………….. |
133 |
Figure 2-22 Tray 4 feed sensor …………………………………………………………………………………………….. |
134 |
Figure 2-23 Lower right door sensor ………………………………………………………………………………………. |
135 |
Figure 2-24 Test the Tray 4 door switch ………………………………………………………………………………….. |
136 |
Figure 2-25 Tray 4 paper sensor ………………………………………………………………………………………….. |
138 |
Figure 2-26 Tray 4 paper surface sensor ………………………………………………………………………………… |
139 |
Figure 2-27 Tray 4 paper size sensor …………………………………………………………………………………….. |
139 |
Figure 2-28 Tray 4 paper feed sensor ……………………………………………………………………………………. |
140 |
Figure 2-29 Tray 4 door open sensor …………………………………………………………………………………….. |
141 |
Figure 2-30 Tray 5 paper sensor ………………………………………………………………………………………….. |
141 |
Figure 2-31 Tray paper surface sensor …………………………………………………………………………………… |
142 |
Figure 2-32 Tray 5 paper size sensor …………………………………………………………………………………….. |
143 |
Figure 2-33 Tray 5 feed sensor …………………………………………………………………………………………….. |
143 |
Figure 2-34 HCI exit sensor …………………………………………………………………………………………………. |
144 |
Figure 2-35 Product cross section ………………………………………………………………………………………….. |
148 |
Figure 2-36 Optional paper feeder (Tray 4) cross section ……………………………………………………………. |
149 |
Figure 2-37 1×500-sheet paper deck cross section …………………………………………………………………….. |
150 |
Figure 2-38 3×500-sheet paper deck cross section …………………………………………………………………….. |
151 |
Figure 2-39 3,500-sheet HCI cross section ………………………………………………………………………………. |
152 |
Figure 2-40 DC controller connections ……………………………………………………………………………………. |
153 |
Figure 2-41 External component locations ……………………………………………………………………………….. |
156 |
Figure 2-42 Major component locations (1 of 3) ……………………………………………………………………….. |
157 |
Figure 2-43 Major component locations (2 of 3) ……………………………………………………………………….. |
158 |
Figure 2-44 Major component locations (3 of 3) ……………………………………………………………………….. |
158 |
Figure 2-45 PCA locations ………………………………………………………………………………………………….. |
159 |
Figure 2-46 Motor locations ………………………………………………………………………………………………… |
160 |
Figure 2-47 Fan locations …………………………………………………………………………………………………… |
160 |
Figure 2-48 Roller locations ………………………………………………………………………………………………… |
161 |
Figure 2-49 500-sheet feeder external component locations …………………………………………………………. |
162 |
Figure 2-50 500-sheet feeder internal component locations ………………………………………………………….. |
163 |
Figure 2-51 1×500 paper deck external component locations ………………………………………………………. |
164 |
Figure 2-52 1×500 paper deck internal component locations ……………………………………………………….. |
165 |
Figure 2-53 3×500 paper deck external component locations ………………………………………………………. |
166 |
Figure 2-54 3×500 paper deck internal component locations ……………………………………………………….. |
167 |
Figure 2-55 HCI external component locations …………………………………………………………………………. |
168 |
Figure 2-56 HCI internal component locations (1 of 2) ……………………………………………………………….. |
169 |
Figure 2-57 HCI internal component locations (2 of 2) ……………………………………………………………….. |
170 |
Figure 2-58 General timing chart ………………………………………………………………………………………….. |
171 |
Figure 2-59 General circuit diagram (1 of 2) …………………………………………………………………………… |
172 |
Figure 2-60 General circuit diagram (2 of 2) …………………………………………………………………………… |
173 |
Figure 2-61 Configuration page …………………………………………………………………………………………… |
175 |
Figure 2-62 HP embedded Jetdirect page ……………………………………………………………………………….. |
176 |
Figure 2-63 Sample event log ……………………………………………………………………………………………… |
259 |
1 Theory of operation
●Basic operation
●Engine control system
●Laser scanner system
●Image-formation system
●Pickup, feed, and delivery system
●500-sheet paper feeder (Tray 4)
●1×500 and 3×500 paper feeder and stand
●3,500-sheet high-capacity input (HCI) feeder
●Duplexer
Basic operation
Function structure
The product contains the following systems:
●Engine control system
●Laser scanner system
●Image-formation system
●Pickup, feed and delivery system
●Accessory
Figure 1-1 Function structure
Laser scanner system
Image-formation system
Engine control system
Pickup, feed and delivery system
Accessory
Operation sequence
The DC controller in the engine-control system controls the operational sequences. The following table describes durations and operations for each period of a print operation from when the product is turned on until the motors stop rotating.
2 |
Chapter 1 Theory of operation |
ENWW |
● Stops the high-voltage bias
● Stops the laser scanner assembly
● Stops the fuser heater
The product enters the INTR period as the LSTR period is complete if the formatter sends another print command.
Table 1-1 Operation sequence
Period |
Duration |
Purpose |
|
WAIT period |
From the time the power switch |
Brings the product to the Ready state. |
|
is turned on, the door is closed |
● Detects the failure of the low-voltage power supply |
||
or product exits Sleep mode |
|||
until the product is ready for a |
● Detects the connection with the accessories |
||
print operation. |
|||
● Detects the presence of cartridge |
|||
● Rotates and then stops each motor and fan |
|||
● Checks the fuser temperature |
|||
● Heats the fuser film |
|||
● Detects any residual paper and clears it automatically |
|||
● Initializes the high-voltage bias |
|||
● Cleans the photosensitive drum |
|||
● Detects the toner level |
|||
STBY (Standby period) |
From the end of WAIT or LSTR |
Maintains the product in printable condition. |
|
period until either a print |
● Enters Sleep mode if the sleep command is received |
||
command is sent or the power |
|||
switch is turned off. |
● Rotates and then stops each fan |
||
INTR (Initial rotation) |
From the time the print |
Prepares the product for a print job. |
|
command is received until the |
● |
Rotate the motors |
|
product picks up the paper. |
|||
● |
Rotate the fans |
||
● Outputs the high-voltage bias |
|||
● Starts up the laser scanner assembly |
|||
● Warms up the fuser heater |
|||
|
From the end of the INTR |
Processes the print job. |
|
period until the last sheet is |
● Forms the image on the photosensitive drum |
||
delivered. |
|||
● Transfers toner to the paper |
|||
● Fuses the toner image onto the paper |
|||
LSTR (Last rotation) |
From the end of the PRINT |
Stops each load. |
|
period until the motor stops |
● Stops the motors and fans |
||
rotating. |
Engine control system
The engine-control system coordinates all the other systems, according to commands from the formatter. The engine-control system contains the following components:
●DC controller PCA
●Low-voltage power supply unit
●High-voltage power supply PCA
●Fuser control
Figure 1-2 Engine control system
Engine control system
Laser scanner system
DC controller
Image-formation system
Low-voltage power supply
Formatter
High-voltage power supply |
Pickup, feed and delivery |
|
system |
||
Fuser control
Accessory
4 |
Chapter 1 Theory of operation |
ENWW |
DC controller PCA
The DC controller PCA controls the product operation sequence.
Figure 1-3 DC controller PCA
AC input
Low-voltage power supply
Fuser
Transfer roller |
High-voltage |
|
power supply |
||
Cartridge |
DC controller |
Control panel
USB PCA
Connector PCA
HIP
Formatter
The following table lists the product electrical components.
LED
Motor
Fan
Solenoid
Clutch
Photointerrupter
Sensor
Switch
Duplex unit (Accessory)
Input source accessory
Laser scanner
Component type |
Component |
Component name |
abbreviation |
||
Switch |
SW1 |
Left door interlock switch |
SW2 |
Cartridge door interlock switch |
|
SW3 |
Cartridge door open detection switch |
|
SW4 |
Upper cassette media width switch |
|
SW5 |
Lower cassette media width switch |
|
SW6 |
Upper cassette media end switch |
|
SW7 |
Lower cassette media end switch |
|
— |
Power switch |
|
ENWW |
Engine control system |
5 |
Component type |
Component |
Component name |
abbreviation |
||
Solenoid |
SL1 |
Tray 1 (MP tray) pickup solenoid |
Clutch |
CL1 |
Upper cassette pickup clutch |
CL2 |
Lower cassette pickup clutch |
|
Fan |
FM1 |
Rear fan |
FM2 |
Front fan |
|
FM3 |
Fuser fan |
|
Photointerrupter |
SR1 |
Cartridge presence sensor |
SR2 |
MP tray media out sensor |
|
SR3 |
Output sensor |
|
SR4 |
Output bin media full sensor |
|
SR5 |
Lower cassette media out sensor |
|
SR6 |
Loop sensor |
|
SR7 |
Upper cassette media out sensor |
|
SR8 |
Right door sensor |
|
SR9 |
TOP sensor |
|
SR10 |
Upper cassette lift-up sensor |
|
SR11 |
Lower cassette lift-up sensor |
|
SR12 |
Fuser output sensor |
|
Sensor |
— |
Environment sensor |
Motor |
M1 |
Drum motor |
M2 |
Scanner motor |
|
M3 |
Fuser motor |
|
M4 |
Upper cassette lifter motor |
|
M5 |
Lower cassette lifter motor |
|
Motor control
The product has five motors for the paper-feed and image-formation.
6 |
Chapter 1 Theory of operation |
ENWW |
Motor locations
The following figure shows the product motor locations.
Figure 1-4 Motor locations
M4
Table 1-2 |
Motor locations |
||
Motor |
Components driven by motor |
||
M1 |
Drum motor |
Photosensitive drum, transfer roller, registration roller, MP tray pickup roller, cassette |
|
pickup roller, and feed roller |
|||
M2 |
Scanner motor |
Laser scanner mirror |
|
M3 |
Fuser motor |
Pressure roller, fuser output roller, intermediate output roller and paper delivery roller |
|
M4 |
Upper cassette lifter motor |
Lifter for the upper cassette |
|
M5 |
Lower cassette lifter motor |
Lifter for the lower cassette |
|
Failure detection
The DC controller monitors the following motors to determine a motor failure:
●Drum motor
●Scanner motor
●Fuser motor
ENWW |
Engine control system |
7 |
The DC controller determines if the motor has failed and notifies the formatter when the motor encounters the following conditions:
●Startup failure — The motor does not reach a specified rotational count within a specified time from when the motor starts.
●Rotational failure — The rotational speed of the motor is not in the specified range for a specified time after the motor reaches a specified speed.
The DC controller notifies the formatter of a BD (beam detect) failure when it detects a rotational failure of the scanner motor.
The DC controller monitors the related part condition of the following motors to determine a motor failure:
●Upper cassette lifter motor
●Lower cassette lifter motor
Fan control
The product has three fans for preventing the temperature from rising in the product and cooling down the delivered paper.
8 |
Chapter 1 Theory of operation |
ENWW |
Fan locations
The following figure shows the product fan locations.
Figure 1-5 Fan locations
FM1
FM3
FM2
Table 1-3 Fan locations
Fan |
Cooling area |
Type |
Speed |
|
FM1 |
Rear fan |
Product inside and low-voltage power supply area |
Exhaust |
Full/Mid/Low |
FM2 |
Front fan |
Product inside |
Intake |
Full |
FM3 |
Fuser fan |
Fuser area |
Intake |
Full |
Failure detection
The DC controller determines if the fan has failed and notifies the formatter when the fan stops rotating for a specified time during start-up.
ENWW |
Engine control system |
9 |
Low-voltage power-supply PCA
The low-voltage power supply converts AC power into the DC voltage that product components use.
Figure 1-6 Low-voltage power-supply PCA
AC input
Low-voltage power supply |
High-voltage power supply |
DC controller |
||
High-voltage |
Interlock |
|||
Power fuse |
switch |
|||
circuit |
||||
FU1 |
SW2 |
|||
Fuser circuit |
+24VD |
|||
Power fuse |
||||
FU2 |
||||
Zerocross |
/ZEROX |
|||
detection |
||||
circuit |
||||
Power fuse |
Power switch |
|||
FU3 |
||||
Rectifying |
+3.3VA |
|||
circuit |
||||
+3.3V |
+3.3VA |
+3.3VA |
||
generation |
||||
circuit |
+3.3VC |
|||
+3.3VD |
||||
Protection |
+5V |
+24VC |
||
circuit |
||||
+24V |
+5V |
/PSTYP100 |
||
generation |
generation |
+24VC |
||
circuit |
circuit |
|||
+24VB |
+24VB |
|||
RMT_24V |
Interlock |
|||
RMT_PFC |
||||
switch |
||||
SW1 |
||||
+3.3VA |
Connector PCA |
|||
Formatter |
+3.3VB |
+3.3VA |
||
+5V |
+3.3VB |
|||
The following table shows the specifications for the DC power supply.
Table 1-4 |
Low voltage power supply DC power specifications |
||
DC voltage |
Behavior |
||
+24V |
+24VB |
Off during Sleep mode (sleep level1, active off and inactive off) |
|
+24VC |
Off during Sleep mode (sleep level1, active off and inactive off) Interrupted when the left door open |
||
+24VD |
Off during Sleep mode (sleep level1, active off and inactive off) Interrupted when the left door or |
||
the cartridge door open |
|||
10 Chapter 1 Theory of operation |
ENWW |
Table 1-4 Low voltage power supply DC power specifications (continued)
DC voltage |
Behavior |
|
+5V |
+5V |
Off during Sleep mode (sleep level1, active off and inactive off) |
+3.3V |
+3.3VA |
Constantly supplied |
+3.3VB |
Off during Sleep mode (inactive off) |
|
+3.3VC |
Off during Sleep mode (active off and inactive off) |
|
+3.3VD |
Off during Sleep mode (sleep level1, active off and inactive off) |
|
Over-current/over-voltage/overload protection
The over-current/overvoltage protection automatically stops the DC voltage to the product components whenever an excessive current or abnormal voltage is detected. The overload protection automatically stops the DC voltage to the product components whenever the temperature of the low-voltage power supply PCA rises to specified degrees.
The low-voltage power supply has a protective circuit against over-current, over-voltage and overload to prevent failures in the power supply circuit. If DC voltage is not being supplied from the low-voltage power supply, the protective function might be running. In this case, turn the power off and unplug the power cord. Do not turn the product switch on until the root cause is found and corrected.
The DC controller determines a low-voltage power supply failure and notifies the formatter when the protective function runs.
In addition, the low-voltage power supply has three fuses to protect against over-current. If over-current flows into the AC line, the fuse blows to stop AC power.
Safety interruption
For user and service technician’s safety, the product interrupts the power supply of +24V by turning off the interlock switch. The DC power to the following components is interrupted:
●High-voltage power supply
●Fuser motor
The remote switch control circuit turns on or off the product so that the AC power flows even the power switch is turned off. Be sure to unplug the power cord before disassembling the product.
Power supply voltage detection
The power supply voltage detection controls the fuser properly according to the voltage. The DC controller detects whether the low-voltage power supply voltage is 100V or 220V according to the POWER SUPPLY VOLTAGE signal (/PSTYP100).
ENWW |
Engine control system 11 |
Sleep mode
The Sleep mode reduces the power consumption of the product. There are three types of sleep mode:
●Sleep level 1
The DC controller stops the power supply of +24V according to the +24V CONTROL signal (RMT_24V) and POWER FACTOR CORRECTION ACTIVATE signal (RMT_PFC) after a specified period of time from when a sleep command signal is sent from the formatter. The DC controller supplies +24V and the product exits sleep level 1 when a recover signal is sent from the formatter.
●Active off
The DC controller stops the power supplies except for +3.3VA and +3.3VB to the formatter when an active off command signal is sent from the formatter during sleep level 1 or STBY period. The DC controller supplies all power supplies and the product exits active off when a recover signal is sent from the formatter or the power switch is depressed for shorter than three seconds.
●Inactive off
The DC controller stops the power supplies except for +3.3VA to the formatter when an inactive off command signal is sent from the formatter during sleep level 1 or STBY period. The product enters inactive off when the power switch is depressed for longer than three seconds. The DC controller supplies all power supplies and the product exits inactive off when a recover signal is sent from the formatter or the power switch is depressed for shorter than three seconds.
Power supply illumination control
The DC controller changes the light of the LED (power supply illumination) for the power switch according to the power supply condition as follows:
●Lighting-up: STBY period or sleep level 1
●Blinking: Active off
●Lighting-out: Inactive off
12 Chapter 1 Theory of operation |
ENWW |
High-voltage power-supply PCA
The high-voltage power supply applies positive or negative voltage biases to the following components:
●Primary charging roller
●Developing roller
●Transfer roller
●Static charge eliminator
●Fuser film
Figure 1-7 |
High-voltage power-supply PCA |
|
Fuser |
||
Fuser film |
||
DC controller |
High-voltage power supply |
Pressure roller |
Primary |
Cartridge |
|
charging bias |
||
circuit |
To primary charge roller |
|
To developing roller |
||
Developing |
||
bias circuit |
||
Photosensitive drum |
||
Static charge eliminator |
Transfer roller |
|
Static charge |
||
eliminatior |
||
bias circuit |
Transfer bias circuit
The DC controller controls the high-voltage power supply to generate the following biases.
●Primary charging bias
The primary charging bias is used to charge the surface of the photosensitive drum evenly to prepare for image formation. The primary charging bias circuit generates the bias.
●Developing bias
The developing bias is used to adhere toner to an electrostatic latent image formed on the photosensitive drum. The developing bias circuit generates the bias.
●Transfer bias
The transfer bias is used to transfer the toner from the photosensitive drum onto the paper. The transfer bias circuit generates the bias. The transfer bias circuit also generates the reverse bias to clean the transfer roller.
ENWW |
Engine control system 13 |
●Static charge eliminator bias
The static charge eliminator bias is used to improve the paper-feed performance and imagequality. The static charge eliminator bias circuit generates the bias.
●Fusing bias
The fusing bias is used to improve the image-quality. The primary charging bias circuit generates the bias.
14 Chapter 1 Theory of operation |
ENWW |
Fuser control
The fuser heater control circuit and the fuser heater safety circuit control the fuser temperature according to commands from the DC controller. The product uses an on-demand fusing method.
Figure 1-8 Fuser components
TP1
TH1
TH2
Pressure roller
TH3
FUSER TEMPERATURE signal
FUSER HEATER CONTROL signal
Fuser heater control circuit
Fuser heater safety circuit
High-voltage power supply
DC controller |
||
The following table shows the function of each fuser component. |
||
Component |
Function |
|
H1 |
Fuser main heater |
Heats center area of the fuser film |
H2 |
Fuser sub heater |
Heats both ends of the fuser film |
TP1 |
Thermoswitch |
Prevents an abnormal temperature rise of the fuser heater (contact type) |
TH1 |
Main thermistor |
Detects the temperature at center of the fuser heater (contact type) |
ENWW |
Engine control system 15 |
Component |
Function |
|
TH2 |
Sub thermistor 1 |
Detects the temperature at ends of the fuser heater (contact type) |
TH3 |
Sub thermistor 2 |
|
TH4 |
Sub thermistor 3 |
|
Figure 1-9 |
Fuser control system |
|||
AC input |
||||
Low-voltage power supply |
DC controller |
|||
Zerocross detection |
/ZEROX |
|||
circuit |
||||
High-voltage power supply |
||||
RL1001 |
Relay drive circuit |
RLD |
||
RL1002 |
||||
Fuser heater |
FSRD1 |
|||
FSRD2 |
||||
control circuit |
||||
Current |
||||
Fuser heater safety circuit |
detection |
FSRCUR |
||
circuit |
||||
Fuser control circuit |
||||
MFSRTH |
||||
S1FSRTH |
||||
S2FSRTH |
||||
S3FSRTH |
||||
Fuser |
||||
Fuser film assembly |
||||
TH2 |
TH1 |
|||
TP1 |
TH3 |
TH4 |
||
H1/H2 |
Pressure roller
16 Chapter 1 Theory of operation |
ENWW |
Fuser temperature control
The fuser temperature control maintains the temperature of the fuser heater at its targeted temperature.
The DC controller monitors the FUSER TEMPERATURE signals (MFSRTH, S1FSRTH, S2FSRTH and S3FSRTH) and sends the FUSER HEATER CONTROL signals (FSRD1 and FSRD2). The fuser heater control circuit controls the fuser heater depending on the signals so that the fuser heater remains at the targeted temperature.
Fuser heater protective function
The fuser heater protective function detects an abnormal temperature rise of the fuser and interrupts power supply to the fuser heater. The following protective components prevent an abnormal temperature rise of the fuser heater:
●DC controller
The DC controller monitors the detected temperature of the thermistor. The DC controller releases the relay (RL1001) to interrupt power supply to the fuser heater when it detects an abnormal temperature.
●Fuser heater safety circuit
The fuser heater safety circuit monitors the detected temperature of the thermistor. The fuser heater safety circuit releases the relays (RL1001 and RL1002) or deactivates the fuser heater control circuit to interrupt power supply to the fuser heater when it detects an abnormal temperature.
●Thermoswitch
The contact of the thermoswitch is broken to interrupt power supply to the fuser heater when the temperature of the fuser heater is abnormally high.
●Current detection circuit
The current detection circuit monitors the current value flowing in the fuser heater control circuit, and it releases the relay to interrupt power supply to the fuser heater when it detects an abnormal current flow.
The DC controller deactivates the FUSER HEATER CONTROL signal and releases the relays (RL1001 and RL1002) to interrupt power supply to the fuser heater when it detects out of a specified current value of the CURRENT DETECTION signal (FSRCUR).
ENWW |
Engine control system 17 |
Fuser failure detection
The DC controller determines if the fuser functions properly. The DC controller determines a fuser failure, interrupts power supply to the fuser heater and notifies the formatter of a failure state when it encounters the following conditions:
●Abnormally high temperature 1
The main thermistor detects 240°C (464°F) or higher for a specified period.
●Abnormally high temperature 2
The sub thermistor 1 detects 230°C (446°F) or higher for a specified period during WAIT period. The sub thermistor 1 detects 230°C (446°F) or higher for a specified period before INTR starts. The sub thermistor 1 detects 300°C (572°F) or higher for a specified period.
●Abnormally high temperature 3
Either one of the sub thermistor 2 or sub thermistor 3 detects 230°C (446°F) or higher for a specified period during WAIT period.
Either one of the sub thermistor 2 or sub thermistor 3 detects 230°C (446°F) or higher for a specified period before INTR starts.
Either one of the sub thermistor 2 or sub thermistor 3 detects 300°C (572°F) or higher for a specified period.
●Abnormally low temperature 1
The main thermistor detects 60°C (140°F) or lower for a specified period during WAIT period.
The main thermistor detects 70°C (158°F) or lower for a specified period during heater temperature control of INTR period.
The main thermistor detects the targeted temperature minus 40°C (104°F) or lower for a specified period during heater temperature control or pressure roller cleaning of PRINT period.
The main thermistor detects 80°C (176°F) or lower for a specified period during heater temperature control or pressure roller cleaning of PRINT period.
●Abnormally low temperature 2
The sub thermistor 1 detects 60°C (140°F) or lower for a specified period during WAIT period.
●Abnormally low temperature 3
Either one of the sub thermistor 2 or sub thermistor 3 detects 60°C (140°F) or lower for a specified period during WAIT period.
●Abnormal temperature rise
The main thermistor detects the targeted temperature minus 10°C (50°F) or lower for a specified period during heater temperature control of INTR period.
●Drive circuit failure
18 Chapter 1 Theory of operation |
ENWW |
The frequency of the ZEROCROSS signal is not detected in a specified value within a specified period after power-on.
The frequency of the ZEROCROSS signal is not detected in a specified value for a specified period after power-on and once the signal is detected.
●Heater failure
A specified current value or lower is detected during the heater drive period of the WAIT period or when more than a specified electrical power is input.
Pressure roller cleaning
The pressure roller cleaning clears toner on the pressure roller surface by adhering to the paper according to a command from the formatter. This is executed only when the paper size is A4-R (rotated) or Letter-R (rotated). The operational sequence of the pressure roller cleaning is as follows:
1.The DC controller picks up the paper from the designated input source when a cleaning command is sent from the formatter.
2.When the trailing edge of paper passes through the transfer roller, the fuser motor repeats to rotate-and-stop at regular intervals and the fuser heater turns on-and-off at the same time.
3.The toner on the pressure roller fuses onto the paper and the roller clears.
4.The paper with fused toner is delivered out of the product.
ENWW |
Engine control system 19 |
Laser scanner system
The DC controller controls the laser scanner system according to commands from the formatter. The DC controller controls the internal components in the laser scanner system to form latent electrostatic image on the photosensitive drum according to the VIDEO signals. The following are the main components of the laser scanner system:
●Laser assembly
●Scanner motor assembly
●BD (beam detect) sensor
●Scanner mirror
Figure 1-10 Laser scanner system
DC controller
Laser assembly
Scanner mirror
BD sensor
Scanner motor assembly
Photosensitive drum
20 Chapter 1 Theory of operation |
ENWW |
Laser scanner failure detection
The DC controller determines a laser scanner failure and notifies the formatter of the error state when any of the following conditions occurs:
●BD failure
A specified BD interval is not detected within a specified period during the scanner motor drive.
●Scanner motor start-up failure
The scanner motor does not reach a specified rotation within a specified period from when the laser scanner starts driving.
●Laser failure
A specified laser intensity is not detected.
Laser scanner safety function
The laser scanner has a mechanical shutter. For user and service technician safety, the laser shutter interrupts optical path of the laser scanner when the cartridge door is open.
ENWW |
Laser scanner system 21 |
Image-formation system
The DC controller controls the image-formation system according to commands from the formatter. The DC controller controls the internal components of the image-formation system to form the toner image on the photosensitive drum surface. The toner image is transferred to the paper and fused.
The following are the main components of the image-formation system:
●Cartridge
●Transfer roller
●Fuser
●Laser scanner
●High-voltage power supply
Figure 1-11 Image-formation system
Transfer roller
Fuser
High-voltage power supply
DC controller
The DC controller rotates the drum motor to drive the following components:
●Photosensitive drum
●Developing roller (follows the photosensitive drum)
●Primary charging roller (follows the photosensitive drum)
●Transfer roller
The DC controller rotates the fuser motor to drive the following components:
●Pressure roller
●Fuser film (follows the pressure roller)
22 Chapter 1 Theory of operation |
ENWW |
Figure 1-12 Image-formation components |
|
Cartridge |
|
Photosensitive drum |
|
Drum motor |
|
Primary charging roller |
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Fuser motor |
Fuser film |
Developing roller |
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Transfer roller |
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Fuser |
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Pressure roller |
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DC controller |
Image-formation process
The image-formation process consists of seven steps divided into five functional blocks:
●Latent-image-formation system
◦Step 1: Primary charging
◦Step 2: Laser-beam exposure
●Developing system
◦Step 3: Developing
●Transfer system
◦Step 4: Transfer
◦Step 5: Separation
ENWW |
Image-formation system 23 |
●Fuser system
◦Step 6: Fusing
●Drum cleaning
◦Step 7: Drum cleaning
Figure 1-13 Image-formation process
: Paper path |
Latent image formation |
|
: Direction of the drum rotation |
2. Laser-beam exposure |
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: Functional block |
||
: Step |
||
1. Primary charging |
Developing
3. Developing
7. Drum cleaning |
||||
Delivery |
6. Fusing |
5. Separation |
4. Transfer |
Pickup |
Fusing |
Transfer |
Latent-image formation block
During the two steps that comprise this block, an invisible latent image is formed on the photosensitive drum.
Step 1: primary charging
To prepare for latent image formation, the surface of the photosensitive drum is charged with a uniform negative potential. The primary charging roller charges the photosensitive drum directly. The primary charging bias is applied to the primary charging roller to keep a negative potential on the drum surface.
Figure 1-14 Primary charging
Primary charging roller
Primary charging bias
Photosensitive drum
24 Chapter 1 Theory of operation |
ENWW |
Step 2: laser-beam exposure
The laser-beam strikes the surface of the photosensitive drum to neutralize the negative charge. An electrostatic latent image forms where the negative charge was neutralized.
Figure 1-15 Laser-beam exposure
Laser beam
Photosensitive drum
Development block
Toner adheres to the electrostatic latent image on the photosensitive drum, which becomes visible.
Step 3: developing
Toner acquires a negative charge from the friction that occurs when the developing roller rotates against the developer blade. The developing bias is applied to the developing roller to make difference in the electric potential of the drum. The negatively charged toner is attracted to the latent image on the photosensitive drum because the drum surface has a higher potential. The latent image becomes visible on the drum.
Figure 1-16 Developing
Developer blade |
Developing roller |
Developing bias
Photosensitive drum
ENWW |
Image-formation system 25 |
Transfer block
During the two steps that comprise this block, a toner image on the photosensitive drum transfers to the paper.
Step 4: image transfer
The toner on the photosensitive drum is transferred to the paper. The transfer bias is applied to the transfer roller to charge the paper positive. The negatively charged toner on the drum surface transfers onto the paper.
Figure 1-17 Image transfer
Photosensitive
drum
Paper
Transfer roller
Transfer bias
Step 5: separation from the drum
The elasticity of the paper and the curvature of the photosensitive drum cause the paper to separate from the photosensitive drum. The static charge eliminator bias is applied to the static charge eliminator. The static charge eliminator reduces back side static discharge of the paper after the transfer process for stable paper-feed and print-quality.
Figure 1-18 Separation from the drum
Photosensitive
drum
Paper
Static charge eliminator |
Transfer roller |
Static charge eliminator bias
26 Chapter 1 Theory of operation |
ENWW |
Fuser block
Until the fusing stage is complete, the image is not permanently affixed to the paper. The toner can be easily smudged until the heat and pressure of the fusing process fix the image to the sheet.
Step 6: fusing
The toner melts by the heat and pressure as the paper passes through the rollers. The toner image is permanently fused to the paper. The fusing bias is applied to the fuser film to improve print-quality.
Figure 1-19 Fusing
Fuser heater
Fuser film
Toner
Paper
Fusing bias
Pressure roller
Drum-cleaning block
The residual toner is removed from the photosensitive drum surface
Step 7: drum cleaning
The cleaning blade scrapes the residual toner off the surface of the photosensitive drum and toner is deposited in the toner collection box.
Figure 1-20 Drum cleaning
Cleaning blade
Toner collection box |
Photosensitive |
drum |
Toner cartridge
The cartridge is filled with toner and consists of the following components:
●Photosensitive drum
●Developing roller
ENWW |
Image-formation system 27 |
Loading…
Hello , you need a philips screw driver fo you to fix this problem ,
the switch of the left door is not activated by the little plastic tab on the left door
-check for broken tab
-you need to remove back cover and low voltage power supply
-check the left door lever behind low voltage power supply
check for correct motion of the lever.
there’s a plastic cover over le door switch, you need to have the door open to remove.
I know it a technician job..
goog luck.
- Инструкции и руководства
- Бренды
- HP
- laserjet m712
- Руководство По Устранению Ошибки
LASERJET ENTERPRISE 700
Troubleshooting Manual
M712
2
3