Removing the fuser motor..................................................................................................222 Removing the carousel-engagement motor.......................................................................223 Removing the air duct and fan............................................................................................223 Printed circuit assemblies (PCAs).......................................................................................................225 Removing the sub-high-voltage transformer PCA..............................................................225 Removing the high-voltage transformer PCA.....................................................................226 Removing the low-voltage PCA..........................................................................................226 Trays....................................................................................................................................................229 Removing tray 1 (multipurpose tray)..................................................................................229 Removing optional tray 2 (250-sheet tray).........................................................................230 Removing the optional tray 2 pickup roller.........................................................................233 Replacing the optional tray 2 separation pad.....................................................................235 6 Troubleshooting Support strategy..................................................................................................................................238 Troubleshooting process.....................................................................................................................239 Troubleshooting checklist...................................................................................................239 Control-panel messages......................................................................................................................244 Alert and warning messages..............................................................................................244 Critical error messages.......................................................................................................253 Clearing jams.......................................................................................................................................256 Media jams occur in the device..........................................................................................256 Tips to avoid media jams ..................................................................................256 Where to look for jams.......................................................................................256 To clear a media jam inside the device.............................................................257 To clear output area jams..................................................................................258 Media jams occur in the automatic document feeder (ADF)..............................................260 To clear a media jam from the automatic document feeder (ADF) ..................260 Print problems......................................................................................................................................263 Print quality problems.........................................................................................................263 Improving print quality........................................................................................263 Understanding print-quality settings..................................................263 To temporarily change print-quality settings.....................263 To change print-quality settings for all future jobs............263 Identifying and correcting print defects..............................................................263 Print-quality checklist.........................................................................264 General print quality issues...............................................................265 Solving issues with color documents................................................271 Media-handling problems...................................................................................................272 Print-media guidelines........................................................................................272 Solving print-media problems............................................................................273 Performance problems.......................................................................................................274 Scan problems.....................................................................................................................................276 Solving scanned image problems.......................................................................................276 Scan quality problems........................................................................................................277 Preventing problems..........................................................................................277 Solving scan-quality problems...........................................................................278 Scan-specific error messages............................................................................................279 Copy problems.....................................................................................................................................280 Preventing problems...........................................................................................................280 viii ENWW