Epson AcuLaser C8500 Service Manual page 416

EPSON AcuLaser C8500
FIP-1.34 MSI/REGI HIGH ASSY Open FIP-1.34 MSI/REGI HIGH ASSY Open FIP-1.34 MSI/REGI HIGH ASSY Open FIP-1.34 MSI/REGI HIGH ASSY Open
Step
*Initial setting
Use of parts of non-EPSON specifications, improper mounting, damage, distortion, dirt,
adherence of foreign matter?
1
*Main parts to check
MAIN P/H FRAME ASSY, MAIN HARNESS ASSY, MCU PWB
*Engine and controller division check
2
Can a test print (single sheet / consecutive printing, about 10 sheets each) be performed
normally with the engine alone?
*MAIN P/H FRAME ASSY mounting check
3
Is the MAIN P/H FRAME ASSY pushed in securely.
*MAIN P/H FRAME ASSY mounting detection check
4 Is the detection of the MAIN P/H FRAME ASSY mounting functioning properly?
• By using the DIAG tool, check by the Digital Input Test device code "20".
*MAIN P/H FRAME ASSY power check
5
Is the voltage between P20-30PIN <=> P20-31PIN 5VDC?
*MAIN P/H FRAME ASSY mounting signal check
Is the voltage for P20-30PIN <=> P20-31PIN as follows?
6
With the
Without the
*P/H HARNESS ASSY continuity check
7
Is there a proper continuity between J020B <=> P91?
Troubleshooting
Check
, 0VDC.
MAIN P/H FRAME ASSY
MAIN P/H FRAME ASSY , 5VDC.
Level 1 FIP (Fault Isolation Procedure)
Treatment
Yes
Replace and remount
Go to step 2.
the concerned part(s).
Printer controller check
(If an error still occurs
Go to step 3.
after replacing, go to
step 3.)
Replace the faulty
Go to step 4
part(s).
Replace the MCU PWB. Go to step 5.
Go to step 6. Go to FIP-2.1
Replace the MCU PWB. Go to step 7.
Replace the MAIN P/H Replace the P/H
FRAME ASSY. HARNESS ASSY.
Revision C
No
5-64