Epson AcuLaser C4000 Service Manual page 246

EPSON AcuLaser C4000/C4100/C3000
Step
Harness Assy EEPROM (PL15.2.10) continuity check
1. Disconnect the P/J140 connector from the PWBA MCU & HVPS.
2. Check the continuity for the following lines.
P71-2 <=> J140-5
6
P71-3 <=> J140-4
P71-4 <=> J140-3
P71-5 <=> J140-2
Is the continuity between P71 <=> J140 normal?
PWBA MCU & HVPS (PL15.1.2)
1. Replace the PWBA MCU & HVPS with a new part. (Refer to Ch4-4.2.18.1)
7
2. Turn On the power.
Does the problem still occur?
Troubleshooting
Check
Level 2 FIP
Treatment
Yes
Replace the Harness Assy
Go to step 7.
EEPROM (PL15.2.10)
Go to FIP-Noise (Page 5-281). Problem solved.
Revision F
No
3-230