Epson AcuLaser C8500 Service Manual page 458

EPSON AcuLaser C8500
FIP-2.25 Faulty FUSER IN SENSOR FIP-2.25 Faulty FUSER IN SENSOR FIP-2.25 Faulty FUSER IN SENSOR FIP-2.25 Faulty FUSER IN SENSOR
Step
*Initial setting
Use of any non-EPSON specifications, improper mounting, damage, distortion, dirt, adherence
of foreign matter?
1
*Main parts to check
FUSER IN SENSOR, MAIN HARNESS ASSY
FUSER HARNESS ASSY, FUSER IN HARNESS, MCU PWB
*FUSER IN SENSOR power supply check
2
Is the voltage between P19-4PIN <=> P19-5PIN 5VDC?
*FUSER IN detection signal power supply check
3
Is the voltage between P19-6PIN <=> P19-5PIN 5VDC?
*FUSER IN detection signal check
Is the voltage between P/J19-6PIN <=> P/J19-5PIN as follows?
4
When transmitting (paper), the
When blocked (no paper)
*FUSER IN HARNESS continuity check
5
Is there a proper continuity between J117 <=> P76?
*FUSER HARNESS ASSY
6
Is there a proper continuity between J71A <=> J76?
*MAIN HARNESS ASSY continuity check
7
Is there a proper continuity between P71A <=> J19?
Troubleshooting
Check
value is 0VDC.
, the value is 5VDC.
Level 2 FIP (Fault Isolation Procedure
Treatment
Yes
Replace and remount
Go to step 2.
the concerned part(s).
Go to step 3. Go to FIP-2.1
Replace the MCU
Go to step 4.
PWB.
Replace the MCU PWB. Go to step 5.
Replace the FUSER IN
Go to step 6.
HARNESS.
Replace the FUSER
Go to step 7.
HARNESS ASSY.
Replace the FUSER IN Replace the MAIN
SENSOR. HARNESS ASSY.
Revision C
No
5-106