Epson AcuLaser CX11 Service Manual page 216

EPSON AcuLaser CX11/CX11F
Step Check
Power supply check to PWBA MCU
11
Are each of the power voltages being supplied
to the following terminals on PWBA MCU
from LV/HVPS?
P410-1 ↔ P410-2: 3. 3 VDC
P410-3 ↔ P410-4: 5 VDC
P410-5/6 ↔ P410-7/8: 24 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?
J410-1 ↔ J502-1
J410-2 ↔ J502-2
J410-3 ↔ J502-3
J410-4 ↔ J502-4
J410-5 ↔ J502-5
J410-6 ↔ J502-6
J410-7 ↔ J502-7
J410-8 ↔ J502-8
TROUBLESHOOTING
Yes No
Replace PWBA Go to Step [12].
MCU. (p.432)
Replace LV/ Repair broken or
HVPS. (p.435) shorted part.
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218