Motors, fans, and solenoids ............................................................................................... 53
Laser/scanner system ........................................................................................................................ 55
Pickup-and-feed-system ..................................................................................................................... 56
Cassette (tray 2) pickup mechanism ................................................................................. 57
Multipurpose-tray (tray 1) pickup mechanism .................................................................... 58
Jam detection .................................................................................................................... 58
Image-formation system ..................................................................................................................... 59
Image-formation process ................................................................................................... 60
Latent-image formation block ............................................................................................ 60
Step 1: primary charging ................................................................................... 60
Step 2: laser-beam exposure ............................................................................ 61
Development block ............................................................................................................ 61
Step 3: developing ............................................................................................ 61
Transfer block .................................................................................................................... 61
Step 4: image transfer ....................................................................................... 61
Step 5: separation from the drum ...................................................................... 62
Fixing block ........................................................................................................................ 62
Step 6: fusing .................................................................................................... 62
Drum-cleaning block .......................................................................................................... 62
Step 7: drum cleaning ....................................................................................... 62
Print cartridge .................................................................................................................... 63
Print-cartridge activation .................................................................................................... 63
5 Removal and replacement
Removal and replacement strategy .................................................................................................... 66
Introduction ........................................................................................................................ 66
Required tools .................................................................................................................... 66
Types of screws ................................................................................................................. 67
Service approach ............................................................................................................... 67
Before performing service .................................................................................................. 68
After performing service ..................................................................................................... 68
Parts removal order ........................................................................................................... 68
Customer self-repair parts .................................................................................................................. 70
Tray 1 pickup roller ............................................................................................................ 70
Tray 2 pickup roller ............................................................................................................ 72
Tray 2 separation pad ........................................................................................................ 73
Tray 3 retard roller ............................................................................................................. 74
Tray 3 pickup and feed rollers ........................................................................................... 75
Formatter ........................................................................................................................... 76
CompactFlash cards .......................................................................................................... 77
DIMMs ............................................................................................................................... 80
Control-panel overlay ......................................................................................................... 84
Duplexer ............................................................................................................................ 84
External doors, covers, and panels .................................................................................................... 86
Right cover ......................................................................................................................... 86
Lower back cover ............................................................................................................... 86
Face-up bin ........................................................................................................................ 87
Top cover ........................................................................................................................... 89
Left cover ........................................................................................................................... 92
Left front cover ................................................................................................................... 94
ENWW v
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