Epson AcuLaser C8500 Service Manual page 402

EPSON AcuLaser C8500
*ADC Sensor surface check
8
Is/Are there dirt or foreign matters on the surface of the ADC Sensor?
*ADC Sensor check
9 Is the ADC Sensor functioning properly?
• By using the DIAG tool, check by Digital Input Test device code "72".
*ADC Solenoid check
10 Is the ADC Solenoid functioning properly?
• By using the DIAG tool, check by the Digital Output Test device code "67".
*Developer Assy replacement check
11 Replace the Developer Assy with a new one with the concerned color.
Does the problem still occur?
Troubleshooting Level 1 FIP (Fault Isolation Procedure)
With tool:
Go to step 9.
Remove the foreign
matters.
Without tool:
Go to FIP-2.18
Go to step 10. Go to FIP-2.18
Go to step 11. Go to FIP-2.19
Replace the MCU PWB. Problem solved.
Revision C
5-50