Xerox Paser 7400 Service Manual page 156

Troubleshooting Procedure Table (Continued)
Step Actions and Questions
5 Check the LVPS +24 V output.
1. Close the Interlock Switches.
2. Disconnect CN2.
Is there +24 V at CN2-1 and <=> ground?
6 Check all pins of the DRV1 harness for
continuity.
Disconnect the DRV1 ribbon cable.
Is the cable conductive?
3-82 Phaser 7400 Color Printer Options Service Manual
Yes
Go to Step 6.
Replace the Engine
Control Board (see
Book 1).
No
Replace the LVPS
(see book 1).
Replace the DRV1
Harness.