Xerox phaser 6250 Service Manual page 125

Troubleshooting Procedure Table
Step Actions and Questions
5 Check the pertinent color's switch on the
CRUM Reader Board P/J342-5PIN <=> P/
J342-1, 2, 3, or 4PIN for continuity.
Depressing the switch should change its
logic state.
6 Check the Harness Assembly TNR4 J51
<=> J342 fro continuity.
7 Check the output for the pertinent color
from the Motor Driver Board P/J42-3, 4, 5,
or 6 PIN <=> P/J42-14 PIN for 0VDC.
8 Check the output for the pertinent color
from the Engine Control Board P/J12-25,
26, 27, or 28 PIN <=> P/J12-17 PIN for
0VDC.
9 Check the harness Assembly DRV2-2 J12
<=> J42 for continuity.
3-44
Yes
Go to Step 6.
Go to Step 7.
Go to Step 8.
Replace the Engine
Control Board,
page 8-107.
Replace the Engine
Control Board,
page 8-107.
Phaser 6250 Color Laser Printer Service Manual
No
Replace Box Assy,
CRUM Reader,
page 8-85
Replace Harness
Assy TNR4
PL 10.1.11.
Replace the Motor
Driver Board,
page 8-101.
Go to Step 9.
Replace the
Harness Assy
DRV2-2, PL
13.1.3.