Epson AcuLaser C8500 Service Manual page 433

EPSON AcuLaser C8500
*Interlock route check
3 Is the voltage between P32-6PIN <=> P32-12PINP 5VDC?
• Close the FUSER ASSY, MAIN P/H FRAME ASSY FRONT COVER ASSY and check.
*LVPS relay route check
4 Is the voltage between P33-9PIN <=> P32-4PIN 5VDC?
• Close the FUSER ASSY, MAIN P/H FRAME ASSY FRONT COVER ASSY and check.
*MAIN HARNESS ASSY continuity check
5
Is there a continuity between J32 <=> J21?
*FUSER ASSY mounting check
6
Is the FUSER ASSY securely mounted?
*MAIN P/H FRAME ASSY mounting check
7
Is the MAIN P/H FRAME ASSY securely mounted?
*Power supply to FRONT COVER SWITCH L check
8
Is the voltage between J199-1PIN<=> P32-4PIN 5VDC?
*FRONT COVER SWITCH R check
9 Is the voltage between P/J198-1PIN<=> P32-4PIN 5VDC?
• Close the FRONT COVER ASSY and check.
*MAIN HARNESS ASSY check
10 Is the voltage between P97-1PIN <=> P32-4PIN 5VDC?
• Close the FRONT COVER ASSY and check.
*MAIN P/H FRAME ASSY connection source voltage check
11 Is the voltage between P91-1PIN <=> P32-4PIN 24VDC?
• Close the FUSER ASSY, FRONT COVER ASSY, TOP COVER ASSY and check.
*FUSER ASSY connection source voltage check
12 Is the voltage between P71-3PIN <=> P32-4PIN 5VDC?
• Close the MAIN P/H FRAME ASSY FRONT COVER ASSY and check.
*MAIN HARNESS ASSY check
Is the voltage between J70-2PIN <=> P32-4PIN 5VDC?
13
• Close the MAIN P/H FRAME ASSY, FUSER ASSY
FRONT COVER ASSY and check.
Troubleshooting Level 2 FIP (Fault Isolation Procedure
Go to step 4. Replace the LVPS.
Go to step 5. Replace the LVPS.
Replace the MAIN
Replace the MCU PWB.
HARNESS ASSY.
Replace the faulty
Go to step 7.
part(s)
Replace the faulty
Go to step 8.
part(s).
Replace the MAIN
Go to step 9.
HARNESS ASSY.
Replace the FRONT
Go to step 10.
COVER SWITCH R.
Replace the MAIN
Go to step 11.
HARNESS ASSY.
Replace the P /H
Go to step 12.
HARNESS ASSY.
Go to step 13. Go to step 16.
Go to step 15. Go to step 14.
Revision C
5-81