Print a menu map ............................................................................................................ 140
Tools for troubleshooting .................................................................................................................. 141
Component tests .............................................................................................................. 141
Drum rotation test ............................................................................................ 141
Half self-test functional check ......................................................................... 142
Perform a half self-test check .......................................................................... 142
Perform other checks ...................................................................................... 142
Heating element check .................................................................................... 143
High-voltage contacts check ........................................................................... 143
Check the print-cartridge contacts ................................................ 143
Check the high-voltage connector assembly ................................. 143
Problem-solving diagrams ................................................................................................................ 144
Repetitive image defects ................................................................................................. 144
Component locations ....................................................................................................... 145
Timing diagram, product base ........................................................................................ 148
Main wiring ...................................................................................................................... 148
Formatter PCA and fax card connectors ......................................................................... 151
Control-panel messages .................................................................................................................. 154
Solve control-panel display problems .............................................................................. 154
Alert and warning messages .......................................................................................... 154
Alert and warning message tables .................................................................. 154
Critical error messages .................................................................................................... 156
Critical error message-tables .......................................................................... 156
Solve paper-handling problems ........................................................................................................ 159
Clear jams ........................................................................................................................ 159
Causes of jams ............................................................................................... 159
Where to look for jams .................................................................................... 160
Clear jams from the ADF ................................................................................. 160
Clear jams from the input-tray areas ............................................................... 161
Clear jams from the output bin ........................................................................ 163
Clear jams from the print-cartridge area ......................................................... 164
Avoid repeated jams ...................................................................................... 165
Media-handling problems ................................................................................................ 165
Print-media guidelines ..................................................................................... 165
Solve print-media problems ............................................................................ 166
Performance problems .................................................................................................... 167
Solve image-quality problems .......................................................................................................... 169
Print-quality problems ...................................................................................................... 169
Improve print quality ........................................................................................ 169
Print-quality settings ....................................................................... 169
Checking the print cartridge ........................................................................... 170
To redistribute the toner in the print cartridge ................................. 170
Identify and correct print defects ..................................................................... 170
Print-quality checklist ...................................................................... 170
ENWW vii
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