October 2012
6-34
ColorQube 8570/8870 Service Manual
Electrical Troubleshooting
Revised, 3rd Revision - Xerox Internal Use Only
General Troubleshooting
Figure 12 Wiring Harness Connectors
7. If any triac is found damaged, replace the Electronics Module (REP 5.1).
Measuring DC Voltages
1. Check the Power Supply Status LEDs (Figure 13); they all should be bright. If the LEDs
are not all brightly light, false readings will result.
Open a door to make sure 50 voltage is activated, if necessary (red LED lit).
Figure 13 Power Control Board LEDs
Table 3 Triac Channels
Connector Pin Channel Function
JAC1 1 Ink Melt Yellow
JAC1 2 Ink Melt Cyan
JAC1 3 Ink Melt Magenta
JAC1 4 Ink Melt Black
JAC2 2 Printhead Reservoir #2
JAC2 3 Printhead Reservoir #1
JAC2 4 Printhead Jetstack Right
JAC2 5 Printhead Jetstack Left
JAC3 7 Paper Preheater
JAC3 8 Drum Heater #2
JAC3 9 Drum Heater #1
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