Xerox Phaser 4500 Service Manual page 110

Error Messages and Codes
3-32
Troubleshooting Procedure (continued)
Steps Actions and Questions
Turn the power ON.
8
Does fan error occur?
Measure the voltage across P/J27-19
9
<=> P/J27-18.
Does the voltage measure 24 VDC?
(12 VDC when low-speed)
Measure the voltage across P/J27-18
10
<=> P/J27-17.
Does the voltage measure 0.82 VDC
or higher?
11 Replace the Sub Fan (page 8-36)
Does the fan error occur when the
power is turned ON?
12 Replace the LVPS.
Does the fan error occur when the
power is turned ON?
Yes No
Replace the Problem solved.
HVPS/engine
logic board
(page 8-73).
Go to step 10. Replace the
LVPS
(page 8-62)
then go to step
8.
Go to step 11. Replace the
HVPS/engine
logic board
(page 8-73).
Go to step 12. Problem solved.
Replace the Problem solved.
HVPS/engine
logic board
(page 8-73).
Phaser 4500/4510 Service Manual