HP_LJ_1022_SM.pdf

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HP LaserJet 1022, 1022n, 1022nw
Service Manual
HP LaserJet 1022 series printers
Service Manual
Table of contents
1 Product Information
Product configurations............................................................................................................................2
HP LaserJet 1022 printer.......................................................................................................2
HP LaserJet 1022n printer.....................................................................................................2
HP LaserJet 1022nw printer..................................................................................................2
Overview of product...............................................................................................................................3
HP LaserJet 1022 series printers..........................................................................................3
Model and serial numbers.....................................................................................................5
Hardware description.............................................................................................................5
Firmware description ............................................................................................................5
Product specifications............................................................................................................................6
Physical specifications...........................................................................................................6
Printer performance...............................................................................................................6
Environmental specification...................................................................................................6
Electrical specifications..........................................................................................................7
Acoustic emissions................................................................................................................7
Extended warranty.................................................................................................................................8
Print-cartridge information .....................................................................................................................9
Refilled print cartridges ........................................................................................................9
Recycling print cartridges .....................................................................................................9
Regulatory information.........................................................................................................................10
FCC compliance..................................................................................................................10
Canadian DOC regulations..................................................................................................10
Korean EMI statement.........................................................................................................10
Laser statement for Finland.................................................................................................11
............................................................................................................................11
2 Installation and Operation
Operating environment ........................................................................................................................14
Identifying the control-panel components.............................................................................................15
Media specifications.............................................................................................................................16
Supported media sizes........................................................................................................16
Guidelines for using media...................................................................................................................17
Paper and transparencies ...................................................................................................17
Common media problems table ..........................................................................................17
Labels..................................................................................................................................17
Envelopes ...........................................................................................................................18
Envelopes with double-side seams.....................................................................18
Envelopes with adhesive strips or flaps..............................................................18
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5 Removal and replacement
Removal and replacement strategy......................................................................................................58
Required tools .....................................................................................................................58
Before performing service....................................................................................................58
Print cartridge .....................................................................................................................59
Parts removal order ............................................................................................................60
User-replaceable parts ........................................................................................................................61
Replacing the pickup roller .................................................................................................61
Replacing the separation pad .............................................................................................64
Replacing the main input tray (paper-pickup tray assembly) ..............................................66
Replacing the output-bin extension (delivery-tray assembly) .............................................67
Covers..................................................................................................................................................68
Right-side cover...................................................................................................................68
Left-side cover.....................................................................................................................70
Rear panel and top-cover assembly....................................................................................70
Front cover...........................................................................................................................75
Internal assemblies..............................................................................................................................77
Transfer-roller assembly......................................................................................................77
Engine-power assembly......................................................................................................80
Fuser (fixing) assembly........................................................................................................82
Paper-pickup assembly.......................................................................................................84
Engine control unit (ECU) assembly....................................................................................85
Laser/scanner assembly......................................................................................................89
6 Troubleshooting
Basic troubleshooting...........................................................................................................................92
Basic troubleshooting..........................................................................................................92
Reset the factory default settings (cold reset)......................................................................................94
Control-panel pages.............................................................................................................................94
Control-panel lights..............................................................................................................................95
Control-panel light patterns..................................................................................................95
Jams.....................................................................................................................................................97
Clearing jams.......................................................................................................................97
Typical media jam locations................................................................................97
Removing a jammed page..................................................................................98
Print-quality troubleshooting...............................................................................................................100
Print-cartridge problems....................................................................................................100
Checking the print cartridge..............................................................................100
To redistribute toner in the print cartridge.........................................100
Solving print-quality problems............................................................................................100
Solving paper-feed problems.............................................................................................................111
Functional checks...............................................................................................................................113
Half self-test functional check............................................................................................113
To perform a half self-test check.......................................................................113
To perform other checks...................................................................................113
Drum-rotation functional check .........................................................................................114
High-voltage-contacts check..............................................................................................115
To check the print-cartridge contacts ..............................................................115
To check the printer high-voltage contacts ......................................................116
Troubleshooting tools.........................................................................................................................117
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Repetitive-image-defect ruler.............................................................................................117
Circuit diagram ..................................................................................................................118
Solenoid, sensors, switches, and motor.............................................................................................119
7 Parts and diagrams
Ordering parts and supplies...............................................................................................................122
Parts..................................................................................................................................122
Related documentation and software................................................................................122
Parts that wear ..................................................................................................................122
Accessories and consumables...........................................................................................................123
Accessories.......................................................................................................................123
Common hardware ...........................................................................................................124
How to use the parts lists and diagrams............................................................................125
Printer exchange/parts.......................................................................................................................126
External covers and panel..................................................................................................................128
Internal components...........................................................................................................................130
Alphabetical parts list.........................................................................................................................138
Numerical parts list.............................................................................................................................140
Index...................................................................................................................................................................143
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