Epson AcuLaser C8500 Service Manual page 454

EPSON AcuLaser C8500
FIP-2.21 Faulty FUSER EXIT SENSOR-1 FIP-2.21 Faulty FUSER EXIT SENSOR-1 FIP-2.21 Faulty FUSER EXIT SENSOR-1 FIP-2.21 Faulty FUSER EXIT SENSOR-1
Step
*Initial setting
Use of parts of non-EPSON specifications, improper mounting, damage, distortion, dirt, adherence of
foreign matter?
1
*Main parts to check
FUSER EXIT SENSOR-1, MAIN HARNESS ASSY
FUSER HARNESS ASSY, MCU PWB
*FUSER EXIT SENSOR-1 power supply check
2
Is the voltage between P19-16PIN <=> P19-17PIN 5VDC?
*FUSER EXIT detection signal power supply check
3
Is the voltage between P19-18PIN <=> P19-17PIN 5VDC?
*FUSER EXIT detection signal check
Is the voltage between P/J19-18PIN <=> P/J19-17PIN as follows?
4
When transmitting (paper),
When blocked (no paper)
*MAIN HARNESS continuity check
5
Is there a proper continuity between J721 <=> P72?
*FUSER HARNESS ASSY continuity check
6
Is there a proper continuity between J71B <=> J72?
*MAIN HARNESS ASSY continuity check
7
Is there a proper continuity between P71B <=> J19?
Troubleshooting
Check
the value is 0VDC.
, the value is 5VDC.
Level 2 FIP (Fault Isolation Procedure
Revision C
Treatment
Yes No
Replace and
remount the Go to step 2.
concerned part(s).
Go to step 3. Go to FIP-2.1
Replace the MCU
Go to step 4.
PWB.
Replace the MCU
Go to step 5.
PWB.
Replace the
Go to step 6.
HARNESS
Replace the FUSER
Go to step 7.
HARNESS ASSY.
Replace the FUSER Replace the MAIN
EXIT SENSOR-1. HARNESS ASSY.
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