Control-panel diagnostic flowcharts .......................................................... 130
Touchscreen black, white, or dim (no image) .............................. 131
Touchscreen is slow to respond or requires multiple presses to
respond ................................................................................. 132
Touchscreen has an unresponsive zone ...................................... 133
No control-panel sound ............................................................ 134
Home button is unresponsive .................................................... 135
Hardware integration pocket (HIP) is not functioning (control panel
functional) .............................................................................. 136
Scanning subsystem .............................................................................................. 136
Tools for troubleshooting ....................................................................................................... 137
Individual component diagnostics ............................................................................ 137
LED diagnostics ...................................................................................... 137
Understand lights on the formatter ............................................. 137
Engine diagnostics ................................................................................. 141
Defeating interlocks ................................................................. 142
Disable cartridge check ........................................................... 143
Engine test button .................................................................... 144
Paper path test ....................................................................................... 145
Paper path sensors test ........................................................................... 145
Manual sensor and tray/bin manual sensor tests ........................................ 147
Manual sensor test .................................................................. 147
Tray/bin manual sensor test ..................................................... 149
Print/stop test ........................................................................................ 150
Component tests ..................................................................................... 151
Control-panel tests ................................................................... 151
Component test (special-mode test) ............................................ 151
Scanner tests ......................................................................................... 154
Scanner tests .......................................................................... 155
Diagrams ............................................................................................................. 157
Block diagrams ...................................................................................... 157
Location of connectors ............................................................................ 162
DC controller PCA ................................................................... 162
HCI Controller PCA ................................................................. 164
Paper Deck Controller PCA ....................................................... 165
Staple Stacker Controller PCA ................................................... 166
Plug/jack locations ................................................................................. 167
Locations of major components ................................................................ 168
Base product .......................................................................... 168
1 x 500-sheet paper feeder ...................................................... 173
1 x 500-sheet paper deck ........................................................ 175
ENWW ix
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