Epson AcuLaser C1100 Service Manual page 183

EPSON AcuLaser C1100
Step Check
Continuity check of HARNESS ASSY
10
MCU C/L
W A R N I N G
Allow FUSER ASSY to cool down
before performing work.
Remove FUSER ASSY. (p.388)
Disconnect 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
11
The voltage of P410-3 ↔ P410-4 on PWBA
MCU is 5 VDC?
Continuity check of HARNESS ASSY MAIN
12
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
Shape and operation check of FUSER
13
ASSY parts
W A R N I N G
Allow FUSER ASSY to cool down
before performing work.
Remove FUSER ASSY. (p.388)
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
14
FSR (Fuser Motor)
The voltage of P404-6 ↔ P404-5 on PWBA
MCU is 24 VDC?
TROUBLESHOOTING
Yes No
Go to Step [11]. Repair broken
or shorted part.
Replace PWBA Go to Step [12].
MCU. (p.404)
Replace LV/ Repair broken
HVPS. (p.407) or shorted part.
Go to Step [14]. Replace FUSER
ASSY. (p.388)
Go to Step [15]. Go to Step [16].
FIP according to the printer message
Step Check
Check after replacement of MOT ASSY FSR
15
Replace MOT ASSY FSR. (p.395)
Does the error recur when a test print is made?
24 VDC power supply check to PWBA MCU
16
The voltage of P410-5/6 ↔ P410-7/8 on
PWBA MCU is 24 VDC?
Continuity check of HARNESS ASSY MAIN
17
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
Revision B
Yes No
Replace PWBA End of
MCU. (p.404) procedure
Replace PWBA Go to Step [17].
MCU. (p.404)
Replace LV/ Repair broken
HVPS. (p.407) or shorted part.
183