Pickup/feed/delivery system ............................................................................................................... 30
Image-formation system ..................................................................................................................... 31
Step 1: Primary charging ................................................................................................... 31
Step 2: Laser beam exposure ............................................................................................ 32
Step 3: Developing ............................................................................................................ 32
Step 4: Transfer ................................................................................................................. 33
Step 5: Separation ............................................................................................................. 33
Step 6: Fusing .................................................................................................................... 34
Step 7: Drum cleaning ....................................................................................................... 34
4 Removal and replacement
Introduction ......................................................................................................................................... 36
Removal and replacement strategy ................................................................................... 36
Electrostatic discharge ....................................................................................................... 36
Required tools .................................................................................................................... 36
Before performing service .................................................................................................................. 37
Pre-service procedures ...................................................................................................... 37
Parts removal order ........................................................................................................... 37
Covers ................................................................................................................................................ 38
Left cover ........................................................................................................................... 38
Right cover ......................................................................................................................... 40
Front cover ......................................................................................................................... 42
Control panel ..................................................................................................................... 42
Top cover and back cover ................................................................................................. 43
Formatter ............................................................................................................................................ 48
ECU .................................................................................................................................................... 50
Fuser .................................................................................................................................................. 55
Laser/scanner ..................................................................................................................................... 59
Drive Belt ............................................................................................................................................ 63
Main motor ......................................................................................................................................... 68
5 Problem solving
Problem-solving checklist ................................................................................................................... 76
Step 1: Is the device set up correctly? ............................................................................... 76
Step 2: Is the Ready light on? ............................................................................................ 76
Step 3: Can you print a configuration page? ..................................................................... 76
Step 4: Is the print quality acceptable? .............................................................................. 77
Step 5: Is the device communicating with the computer? .................................................. 77
Step 6: Does the printed page look like you expected? ..................................................... 77
Contact HP support ........................................................................................................... 77
Status-light patterns ........................................................................................................................... 78
Clearing jams ..................................................................................................................................... 81
Typical media jam locations ............................................................................................... 81
Removing a jammed page ................................................................................................. 81
Improve print quality ........................................................................................................................... 84
Light print or faded ............................................................................................................. 84
Toner specks ..................................................................................................................... 84
Dropouts ............................................................................................................................ 84
Vertical lines ...................................................................................................................... 85
Gray background ............................................................................................................... 85
iv ENWW
To Next Page
Loading...
