Troubleshooting process .................................................................................................................. 139 Determine the problem source ........................................................................................ 139 Troubleshooting flowchart ............................................................................... 139 Power subsystem ............................................................................................................ 140 Power-on checks ............................................................................................. 140 Power-on troubleshooting overview ...............................................
140 Control-panel checks ....................................................................................................... 141 Control-panel diagnostic flowcharts ................................................................ 144 Touchscreen black, white, or dim (no image) ................................. 145 Touchscreen is slow to respond or requires multiple presses to respond ........................................................................................... 146 Touchscreen has an unresponsive zone ........................................ 147 No control-panel sound ..................................................................
148 Home button is unresponsive ......................................................... 149 Hardware integration pocket (HIP) is not functioning (control panel functional) ............................................................................. 150 Scanning subsystem ........................................................................................................ 150 Tools for troubleshooting .................................................................................................................. 151 Individual component diagnostics ....................................................................................
151 LED diagnostics .............................................................................................. 151 Understand lights on the formatter ................................................. 151 Engine diagnostics .......................................................................................... 156 Defeating interlocks ........................................................................ 156 Disable cartridge check .................................................................. 157 Engine test button ...........................................................................
158 Paper path test ................................................................................................ 158 Paper path sensors test .................................................................................. 159 Manual sensor and tray/bin manual sensor tests ............................................ 160 Manual sensor test ......................................................................... 160 Tray/bin manual sensor test ........................................................... 161 Print/stop test ..................................................................................................
163 Component tests ............................................................................................. 163 Control-panel tests ......................................................................... 163 Finishing accessory component test .............................................. 166 Component test (special-mode test) ............................................... 164 Scanner tests M830 ........................................................................................ 202 Scanner tests ..................................................................................
202 Diagrams ......................................................................................................................... 204 Block diagrams ................................................................................................ 205 Location of connectors .................................................................................... 215 DC controller PCA connectors ........................................................ 215 viii ENWW