Rear-upper cover ............................................................................................................. 143 Rear door and rear-lower cover ....................................................................................... 145 Scanner assembly ........................................................................................................... 147 Top cover ......................................................................................................................... 149 Internal assemblies ..........................................................................................................................
151 Print-cartridge drawer ...................................................................................................... 151 Main motor ....................................................................................................................... 154 Speaker (fax/memory-card models only) ......................................................................... 155 Intermediate transfer belt (ITB) ........................................................................................ 156 Reinstall the ITB ..............................................................................................
159 DC controller PCA ........................................................................................................... 161 Special considerations .................................................................................... 161 Remove the DC controller PCA ...................................................................... 161 Formatter and fax card PCAs .......................................................................................... 165 Special considerations .................................................................................... 165 Remove the formatter PCA .............................................................................
165 Fuser motor ..................................................................................................................... 168 Power supply (high-voltage) ............................................................................................ 169 Power supply (low voltage) .............................................................................................. 173 Reinstall the power supply (low voltage) ......................................................... 179 Power supply (fuser) ........................................................................................................
180 Fuser ................................................................................................................................ 183 7 Problem solve Menu map ........................................................................................................................................ 188 Troubleshooting process .................................................................................................................. 189 Pre-troubleshooting checklist ..........................................................................................
189 Power-on checks ............................................................................................................. 190 Troubleshooting tools ....................................................................................................................... 191 LED diagnostics ............................................................................................................... 191 Network LEDs (network models only) ............................................................. 191 Control panel LEDs .........................................................................................
191 Memory card LED (fax/memory-card models only) ......................................... 191 Control-panel diagnostics ................................................................................................ 192 Diagrams ......................................................................................................................... 193 Block diagrams ................................................................................................ 193 Scanner and automatic document feeder (ADF) assemblies ......... 193 Major components ..........................................................................
195 Solenoid, sensors, and motors ....................................................... 197 Rollers ............................................................................................ 198 PCAs .............................................................................................. 199 Interface ports ................................................................................................. 200 DC controller PCA ........................................................................................... 201 viii ENWW