Epson AcuLaser C8500 Service Manual page 453

EPSON AcuLaser C8500
FIP-2.20 Faulty CARTRIDGE SENSOR FIP-2.20 Faulty CARTRIDGE SENSOR FIP-2.20 Faulty CARTRIDGE SENSOR FIP-2.20 Faulty CARTRIDGE 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
CARTRIDGE, FUSER CONNECTOR, FUSER HARNESS ASSY
MCU PWB
*CARTRIDGE SENSOR power supply check
2
Is the voltage between P17-5PIN <=> P17-3PIN 5VDC ?
*CARTRIDGE detection signal power supply check
3
Is the voltage between P017-4PIN <=> P17-3PIN 5VDC?
*CARTRIDGE detection signal check
Is the voltage between P/J17-4PIN <=> P/J17-3PIN as follows?
4
When transmitting (Cartridge),
When blocked (no Cartridge)
*CARTRIDGE SENSOR HARNESS continuity check
5
Is there a proper continuity between J87 <=> J17?
Troubleshooting
Check
the value is 0VDC.
, the value is 5VDC.
Level 2 FIP (Fault Isolation Procedure
Treatment
Yes No
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
Go to step 5.
PWB.
Replace the Replace the CART.
CARTRIDGE SENSOR. SENSOR HARNESS.
Revision C
5-101