Lifter-drive assembly (optional paper feeder) .................................................................. 230 Remove the lifter-drive assembly (optional paper feeder) .............................. 230 Pickup motor assembly (optional paper feeder) ............................................................. 231 Remove the pickup motor (optional paper feeder) assembly .......................... 231 Controller PCA (optional paper feeder) ........................................................................... 232 Remove the controller PCA (optional paper feeder) .......................................
232 3 Solve problems Solve problems checklist .................................................................................................................. 234 Menu map ........................................................................................................................................ 236 Troubleshooting process .................................................................................................................. 237 Determine the problem source ........................................................................................ 237 Pre-troubleshooting checklist ..........................................................................
237 Troubleshooting flowchart ............................................................................... 239 Power subsystem ............................................................................................................ 240 Power-on checks ............................................................................................. 240 Power-on troubleshooting overview ............................................... 240 Tools for troubleshooting ..................................................................................................................
242 Individual component diagnostics .................................................................................... 242 LED diagnostics .............................................................................................. 242 Understand lights on the formatter ................................................. 242 Engine diagnostics .......................................................................................... 243 Defeating interlocks ........................................................................ 243 Disable cartridge check ..................................................................
244 Engine-test button .......................................................................... 244 Paper-path test ................................................................................................ 245 Manual sensor test (special-mode test) .......................................................... 246 A TOP (top of page) sensor ............................................................ 247 B and C loop sensors ..................................................................... 248 D fuser delivery sensor ................................................................... 249 E duplex re-pickup sensor ..............................................................
250 F output bin full sensor ................................................................... 251 I developer alienation ..................................................................... 252 J fuser pressure-release sensor .................................................... 253 K primary transfer-roller-disengagement sensor ............................ 254 L media sensor .............................................................................. 256 M front-door switch ......................................................................... 257 N right-door switch ..........................................................................
258 Manual sensor test 2 (special-mode test) ....................................................... 259 O Tray 1 paper present sensor ...................................................... 261 P Tray 2 paper present sensor ....................................................... 262 Q Tray 2 paper surface 1 and 2 sensors ........................................ 263 R Tray 2 paper size switches ........................................................ 264 x ENWW