Pickup-drive assembly
.....................................................................................................
129
Laser/scanner assembly
..................................................................................................
138
Main fan
...........................................................................................................................
142
Printed circuit assemblies (PCAs)
....................................................................................................
144
Low-voltage power-supply PCA
.......................................................................................
144
DC controller PCA
...........................................................................................................
148
High-voltage power supply
..............................................................................................
150
Memory-controller PCA
...................................................................................................
152
Driver PCA
.......................................................................................................................
154
Control panel
...................................................................................................................
156
Pickup-and-feed driver (relay) PCA
.................................................................................
158
Sensors
............................................................................................................................................
160
Temperature sensor
........................................................................................................
160
Paper and registration sensor covers
..............................................................................
161
Cartridge-sensor PCA
......................................................................................................
162
500-sheet feeder
..............................................................................................................................
165
500-sheet feeder right cover
............................................................................................
165
500-sheet feeder left cover
..............................................................................................
167
500-sheet feeder rear cover
............................................................................................
170
500-sheet feeder driver PCA
...........................................................................................
172
6
Troubleshooting
Troubleshooting process
..................................................................................................................
176
Pre-troubleshooting checklist
..........................................................................................
176
Troubleshooting flowchart
................................................................................................
178
Power-on checks
.............................................................................................................
179
Control-panel messages
..................................................................................................................
180
Event-log messages
.........................................................................................................................
193
Jams
.................................................................................................................................................
194
Common causes of jams
.................................................................................................
194
Clearing jams
...................................................................................................................
195
Image defects
...................................................................................................................................
207
Light image
......................................................................................................................
208
Light color
........................................................................................................................
208
Dark image
......................................................................................................................
209
Dark color
........................................................................................................................
209
Completely blank image
..................................................................................................
210
All black or solid color
......................................................................................................
210
Dots in vertical lines
.........................................................................................................
210
Dirt on back of paper
.......................................................................................................
210
Dirt on front of paper
........................................................................................................
211
Vertical lines
...................................................................................................................
211
White vertical lines
...........................................................................................................
211
Horizontal line
..................................................................................................................
212
White horizontal line
........................................................................................................
212
Color missing
..................................................................................................................
213
Blank spots
......................................................................................................................
213
Poor fusing
.......................................................................................................................
213
Image distortion
...............................................................................................................
214
Color misregistration
........................................................................................................
214
ENWW
vii