Epson AcuLaser CX11 Service Manual page 189

EPSON AcuLaser CX11/CX11F
Step Check
Shape and operation check of FUSER ASSY
33
parts
Allow FUSER ASSY to cool down
W A R N I N G
before performing work.
Remove FUSER ASSY. (p.415)
Are the gears, FUSER ROLL, EXIT ROLL,
PINCH ROLL and other parts in FUSER ASSY
attached correctly?
Also, do these parts rotate smoothly without
any dirt or damage?
Turn by hand to check.
24 VDC power supply check to MOT ASSY
34
FSR (Fuser Motor)
The voltage of P404-6 ↔ P404-5 on PWBA
MCU is 24 VDC?
Check after replacement of MOT ASSY FSR
35
Replace MOT ASSY FSR. (p.422)
Does the error recur when the power is turned
ON?
24 VDC power supply check to PWBA MCU
36
The voltage of P410-5/6 ↔ P410-7/8 on
PWBA MCU is 24 VDC?
Continuity check of HARNESS ASSY MAIN
37
Disconnect P/J410 from PWBA MCU and P/
J502 from LV/HVPS.
Do all of the wiring below have normal
continuity?
J410-5 ↔ J502-5
J410-6 ↔ J502-6
J410-7 ↔ J502-7
J410-8 ↔ J502-8
TROUBLESHOOTING
Yes No
Go to Step [34]. Replace FUSER
ASSY. (p.415)
Go to Step [35]. Go to Step [36].
Replace PWBA End of procedure
MCU. (p.432)
Replace PWBA Go to Step [37].
MCU. (p.432)
Replace LV/ Repair broken or
HVPS. (p.435) shorted part.
Printer
Step Check
Continuity check of HARNESS ASSY MCU
38
C/L
Allow FUSER ASSY to cool down
W A R N I N G
before performing work.
Remove FUSER ASSY. (p.415)
Disconnect the P/J417 from PWBA MCU.
Do all of the wiring below have normal
continuity?
J417-6 ↔ J614A-7
J417-7 ↔ J614A-6
5 VDC power supply check to PWBA MCU
39
The voltage of P410-3 ↔ P410-4 on PWBA
MCU is 5 VDC?
Continuity check of HARNESS ASSY MAIN
40
Disconnect P/J410 from PWBA MCU and P/
J502 from LV/HVPS.
Do all of the wiring below have normal
continuity?
J410-3 ↔ J502-3
J410-4 ↔ J502-4
Revision B
Yes No
Go to Step [39]. Repair broken or
shorted part.
Replace PWBA Go to Step [40].
MCU. (p.432)
Replace LV/ Repair broken or
HVPS. (p.435) shorted part.
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