Epson AcuLaser C8500 Service Manual page 437

EPSON AcuLaser C8500
FIP-2.5 Faulty SIZE SWITCH ASSY FIP-2.5 Faulty SIZE SWITCH ASSY FIP-2.5 Faulty SIZE SWITCH ASSY FIP-2.5 Faulty SIZE SWITCH ASSY
Step
*Initial setting
Use of parts of non-EPSON specifications, improper mounting, damage, distortion, dirt,
adherence of foreign matter?
1
*Main parts to check
SIZE SWITCH ASSY, MAIN HARNESS ASSY, MCU PWB
*SIZE SWITCH ASSY power supply check
2
Is there 5VDC between P16-28PIN <=> P16-27PIN?
*REGI. Detection signal check
3 Is there proper voltage between P/J16-29PIN <=> P/J16-27PIN for each paper size?
• Check by switching paper size while referring to 7.1 "Paper Size Control" in Chapter 10.
*MAIN HARNESS ASSY continuity check
4
Is there proper continuity between J102 <=> 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
Replace the MCU PWB. Go to step 4.
Replace the SIZE SWITCH Replace the MAIN
ASSY. HARNESS ASSY.
Revision C
No
5-85