Epson AcuLaser C8500 Service Manual page 450

EPSON AcuLaser C8500
*MAIN HARNESS ASSY continuity check
Is there a proper continuity between the following?
J33-2PIN<=>P195-2PIN
9
P195-1PIN<=>J196-2PIN
P196-1PIN<=>J194-1PIN
J193-1PIN<=>J33-1PIN
*TOP COVER SWITCH continuity check
10
Is there a continuity between J195-1PIN <=> J195-2PIN when the contact is pushed and no
continuity when let go?
*TOP COVER ASSY tab check
11
Do the tabs of the TOP COVER ASSY securely push in the contact of the TOP COVER SWITCH
when the TOP COVER ASSY is mounted?
*FRONT COVER SWITCH R continuity check
12
Is there continuity between the terminals of the FRONT COVER SWITCH R when the FRONT
COVER is closed and no continuity when it is open?
*FRONT COVER ASSY tab check
13
Do the tabs of the FRONT COVER ASSY securely push in the contact of the FRONT COVER
SWITCH R when the FRONT COVER ASSY is mounted?
*MAIN HARNESS ASSY continuity check
14
Is there a proper continuity between J116 <=> J18?
*MCU PWB replacement check
15 Replace with the properly functioning MCU PWB.
Does the problem still occur?
Troubleshooting Level 2 FIP (Fault Isolation Procedure
Replace the MAIN
Go to step 10.
HARNESS ASSY.
Replace the TOP
Go to step 11.
COVER SWITCH.
Replace the faulty
Go to step 12.
part(s).
Replace the FRONT
Go to step 13.
COVER SWITCH R.
Replace the faulty
Go to step 14.
part(s).
Replace the MAIN
Go to step 15.
HARNESS.
Replace the ROS
Problem solved.
ASSY.
Revision C
5-98