Epson AcuLaser C8500 Service Manual page 415

EPSON AcuLaser C8500
FIP-1.33 FRONT COVER ASSY Open FIP-1.33 FRONT COVER ASSY Open FIP-1.33 FRONT COVER ASSY Open FIP-1.33 FRONT COVER ASSY Open
Step
*Initial setting
Use of parts of non-EPSON specifications, improper mounting, damage, distortion, dirt,
adherence of foreign matter?
1
*Main parts to check
FRONT COVER SWITCH R, FRONT COVER SWITCH L
MCU PWB
*Engine and controller division check
2
Can a test print (single sheet / consecutive printing, about 10 sheets each) be performed normally
with the engine alone?
*FRONT COVER SWITCH R push-in check
Is the operation for the actuator of the FRONT COVER ASSY is as follows?
3
When the FRONT COVER ASSY is closed, turn on the FRONT COVER SWITCH R.
When the FRONT COVER ASSY is opened, turn off the FRONT COVER SWITCH R.
*FRONT COVER SWITCH R check
4 Is the FRONT COVER SWITCH R functioning properly?
• By using the DIAG tool, check by the Digital Input Test device code "23".
*FRONT COVER SWITCH R power check
5
Is the voltage between P19-2PIN <=> P19-3PIN 5VDC.
*FRONT COVER detection signal check
Is the voltage between P19-2PIN <=> P19-3PIN as follows?
6
When the FRONT COVER ASSY is open, the value is 0VDC .
When the FRONT COVER ASSY is closed, the value changes from 0VDC to 5.5VDC .
*MSI HARNESS ASSY continuity check
7
Is there a proper continuity between J019 <=> P197?
Troubleshooting
Check
Level 1 FIP (Fault Isolation Procedure)
Treatment
Yes
Replace and remount
Go to step 2.
the concerned part(s).
Printer controller check
(If an error still occurs
Go to step 3.
after replacing, go to
step 3.)
With tool:
Go to step 4.
Replacement of faulty
Without tool:
part(s).
Go to step 5.
Replace the MCU PWB. Go to step 5.
Go to step 6. Go to FIP-2.1
Replace the MCU PWB. Go to step 7.
Replace the FRONT Replace the MAIN
COVER SWITCH R HARNESS ASSY
Revision C
No
5-63