Epson AcuLaser C8500 Service Manual page 435

EPSON AcuLaser C8500
FIP-2.3 Faulty CASSETTE NO PAPER SENSOR FIP-2.3 Faulty CASSETTE NO PAPER SENSOR FIP-2.3 Faulty CASSETTE NO PAPER SENSOR FIP-2.3 Faulty CASSETTE NO PAPER 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
CASSETTE NO PAPER SENSOR, MAIN HARNESS ASSY
CASSETTE SENSOR HARNESS, MCU PWB
*CASSETTE NO PAPER SENSOR power supply check
2
Is the voltage between P16-30PIN <=> P16-3PIN 5VDC?
*CASSETTE NO PAPER detection signal power supply check
3
Is the voltage between P16-32PIN <=> P16-31PIN? 5VDC
*CASSETTE NO PAPER detection signal check
Is the voltage between P/J16-32PIN <=> P/J16-31PIN as follows?
4
When transmitting (paper), the value is 0VDC.
When blocked (no paper), the value is 5VDC.
*CASSETTE SENSOR HARNESS continuity check
5
Is there a proper continuity between J107 <=> P101?
*MAIN HARNESS ASSY continuity check
6
Is there a proper continuity between J101 <=> J16?
Troubleshooting
Check
Level 2 FIP (Fault Isolation Procedure
Treatment
Yes
Replace and remount the
Go to step 2.
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 CASSETTE
Go to step 6.
SENSOR HARNESS.
Replace the CASSETTE Replace the MAIN
NO PAPER SENSOR. HARNESS ASSY.
Revision C
No
5-83