HP Color LaserJet Enterprise CM4540 MFP Series - Page 17

Tray 4 paper size switches ....................................................... 403
Tray 5 paper sensor ................................................................ 403
Tray 5 feed sensor ................................................................... 404
Tray 5 paper surface 1 and 2 sensors ....................................... 404
Tray 5 paper size switches ....................................................... 405
5V laser and 24V interlock and logic switches (and power switch) 406
New ITB sensor ....................................................................... 410
Tray 3, 4, and 5 right door switch ............................................. 412
Paper-path sensors test ............................................................................ 413
Print/stop test ........................................................................................ 414
Scanner tests ......................................................................................... 414
Scanner tests .......................................................................... 414
Scanner sensor tests ................................................................. 415
Document feeder paper present sensor ...................................... 416
Document feeder Y (length) sensor ............................................. 416
Document feeder jam cover sensor ............................................ 417
Flatbed Y (length) sensor .......................................................... 418
Flatbed cover angle sensor ....................................................... 419
Flatbed cover sensor ................................................................ 420
Document feeder registration sensor .......................................... 421
Document feeder exit sensor ..................................................... 421
Document feeder read sensor ................................................... 422
Component tests ..................................................................................... 422
Control-panel tests ................................................................... 422
Component test (special-mode test) ............................................ 422
Stapler/stacker ....................................................................... 424
Diagrams ............................................................................................................. 426
Block diagrams ...................................................................................... 426
Plug/jack locations ................................................................................. 430
Location of connectors ............................................................................ 432
DC controller connector locations .............................................. 432
Controller PCA (1 x 500-sheet and 3 x 500-sheet optional paper
feeders) .................................................................................. 434
Stapler/stacker PCA ................................................................ 435
IPTU PCA ............................................................................... 436
Locations of major components ................................................................ 437
General timing chart ............................................................................... 451
Circuit diagrams .................................................................................... 452
Internal print-quality test pages ................................................................................ 458
Print-quality-troubleshooting pages ............................................................ 458
Diagnostics page ................................................................................... 461
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