3
Solve problems
.............................................................................................................
237
Solve problems checklist
.......................................................................................................
238
Menu map
..........................................................................................................................
240
Current settings pages
..........................................................................................................
241
Preboot menu options
...........................................................................................................
242
Troubleshooting process
........................................................................................................
243
Determine the problem source
.................................................................................
243
Troubleshooting flowchart
.......................................................................
243
Power subsystem
...................................................................................................
244
Power-on checks
....................................................................................
244
Power-on troubleshooting overview
............................................
244
Tools for troubleshooting
.......................................................................................................
246
Individual component diagnostics
............................................................................
246
LED diagnostics
......................................................................................
246
Understand lights on the formatter
.............................................
246
Engine diagnostics
.................................................................................
254
Defeating interlocks
.................................................................
254
Disable cartridge check
...........................................................
256
Engine test button
....................................................................
257
Paper path test
.......................................................................................
258
Paper path sensors test
...........................................................................
258
Manual sensor test
.................................................................................
260
Registration sensor
..................................................................
261
Fuser loop sensors
...................................................................
262
Fuser output sensor
..................................................................
263
Duplexer refeed sensor
............................................................
264
Output-bin full sensor
...............................................................
265
Fuser pressure-release sensor
....................................................
266
ITB alienation sensor
................................................................
267
Right- and front-door interlock switches
.......................................
269
Tray/bin manual sensor test
.....................................................
271
Print/stop test
........................................................................................
279
Component tests
.....................................................................................
280
Component test (special-mode test)
............................................
280
Diagrams
.............................................................................................................
282
Block diagrams
......................................................................................
282
Location of connectors
............................................................................
284
DC controller PCA
...................................................................
284
Paper feeder driver PCA
..........................................................
285
Plug/jack locations
.................................................................................
286
Locations of major components
................................................................
286
x
ENWW