HP LaserJet Enterprise 500 3 Solve problems

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
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