Epson AcuLaser C8500 Service Manual page 456

EPSON AcuLaser C8500
FIP-2.23 Faulty TR0 SENSOR FIP-2.23 Faulty TR0 SENSOR FIP-2.23 Faulty TR0 SENSOR FIP-2.23 Faulty TR0 SENSOR
Step
*Initial setting
Use of parts of non-EPSON specifications, improper mounting, damage, distortion, dirt,
adherence of foreign matter?
1
*Main parts to check
TR0 SENSOR, MAIN HARNESS ASSY, TR0 HARNESS MCU PWB
*TR0 SENSOR power supply check
2
Is the voltage between P16-7PIN <=> P16-9PIN 5VDC?
*TR0 SENSOR detection signal power supply check
3
Is the voltage between P16-8PIN <=> P16-9PIN 5VDC?
*TR0 SENSOR detection signal check
Is the voltage between P/J16-8PIN <=> P/J16-9PINas follows?
4
When transmitting (IBT BELT mark detection), the
When blocked (no IBT BELT mark detection)
*TR0 HARNESS continuity check
5
Is there a proper continuity between J57 <=> J54?
*MAIN HARNESS ASSY continuity check
6
Is there a proper continuity between J54 <=> J16?
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
Go to step 4. Replace the MCU PWB.
Replace the MCU PWB. Go to step 5.
Replace the TR0
Go to step 6.
HARNESS.
Replace the TRO Replace the MAIN
SENSOR. HARNESS.
Revision C
No
5-104