Xerox 7700DX - Phaser Color Laser Printer Service Manual page 93

Error Chain /
Code Link
44 10-350
Note
If this failure reoccurs three times successively, an Engine NVRAM
value is set preventing further printer use until the Clear Tech Rep
Fault, Clear <09-380 ~ 09-383> is run.
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 P600-7 (see figure page
2-47) and P600-9 (see figure page 2-47).
Does the resistance measure between 20K and 100K ohms?
Yes No
Replace the Fuser Assembly.
Reinstall Fuser.
Remove the Rear Cover (RRP 1, on page 7-154), Rear Shield (RRP 9, on page 7-163) and
the Rear Shield Bracket (RRP 10, on page 7-164).
Measure the resistance between P404A-3 (see figure page 2-46) and P404A-4 (see figure
page 2-46) on the Engine Control Board.
Does the resistance measure between 20K and 100K ohms?
Yes No
Repair or replace the wiring harness between the Engine Control Board and the Fuser.
Replace the Engine Control Board (RRP 42, on page 7-206).
45 10-351
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- (see figure page
2-47)7 and P600-9 (see figure page 2-47).
Does the resistance measure between 20K and 100K ohms?
Yes No
Replace the Fuser Assembly.
Reinstall Fuser.
Remove the Rear Cover (RRP 1, on page 7-154), Rear Shield (RRP 9, on page 7-163) and
the Rear Shield Bracket (RRP 10, on page 7-164).
Measure the resistance between P404A-3 (see figure page 2-46) and P404A-4 (see figure
page 2-46) on the Engine Control Board.
Does the resistance measure between 20K and 100K ohms?
Yes No
Repair or replace the wiring harness between the Engine Control Board and the Fuser.
Replace the Engine Control Board (RRP 42, on page 7-206).
ERROR 44 FUSER SUB LAMP FAILURE
ERROR 45 FUSER STS (REAR) FAILURE
Phaser 7700 Color Laser Printer Service Manual
Front Panel Message
2-63