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Phaser 7700 Color Laser Printer Service Manual
2-63
44
10-350
ERROR 44 FUSER SUB LAMP FAILURE
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
ERROR 45 FUSER STS (REAR) 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- (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
Code
Chain /
Link
Front Panel Message
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