Xerox Phaser 7700 Service Manual page 88

Error Chain /
Code Link
46 10-354 ERROR 46 FUSER STS (REAR) WARM TIME FAILURE
Switch printer power OFF.
Remove the Fuser Assembly.
Warning
Fuser may be very hot. Use extreme caution to prevent burns.
Measure the resistance between the Fuser Assembly connector P600-1 and P600-3 (see fig-
ure page 3-48).
Does the resistance measure approximately 6 ohms for a 110 VAC Fuser or approximately 20
ohms for a 220 VAC Fuser?
Yes No
Replace the Fuser Assembly.
Measure the resistance between the Fuser Assembly connector P600-7 (see figure page
3-48) and P600-9 (see figure page 3-48).
Does the resistance measure between 20 ohms and 100 ohms?
Yes No
Replace the Fuser Assembly.
Reinstall Fuser.
Remove the Rear Cover (RRP 1, on page 7-140), Rear Shield (RRP 9, on page 7-149) and
the Rear Shield Bracket (RRP 10, on page 7-150).
Measure the resistance between P404A-3 (see figure page 3-47) and P404A-4 (see figure
page 3-47) on the Engine Control Board.
Does the resistance measure between 20K ohms and 100K ohms?
Yes No
Repair or replace the wiring harness between the Engine Control Board and the Fuser.
Reinstall the Fuser.
Switch printer power ON.
Does the Fuser get warm?
Yes No
Replace the Chassis AC Power Assembly (RRP 49, on page 7-198).
Replace the Engine Control Board (RRP 42, on page 7-190).
Service Quick Reference Guide - Diagnostics, Error Codes & Messages
Front Panel Message
2-65