Xerox 7750DXF - Phaser Color Laser Printer Service Manual page 98

Troubleshooting Procedure (Continued)
Step Actions and Questions
5 1. Is line voltage present at FS47 on the
AC drive board?
6 1. Check the wiring harness between
FS47 and J600-1 for an open circuit or
poor connection.
2. Is the wiring harness OK?
7
1. Check for +5 VDC at P/J 590-3 on the
AC drive board.
8 1. Check for +24 VDC at P/J 590-1 on the
AC drive board.
3-32
Yes
Go to step 6.
Replace the fuser
assembly.
Go to step 8.
Replace the AC
power chassis
assembly.
Phaser 7750 Printer Service Manual
No
Go to step 7.
Replace the AC
power chassis
assembly.
Replace the
engine control
board.
Replace the fuser
assembly.