Epson AcuLaser C4000 Service Manual page 275

EPSON AcuLaser C4000/C4100/C3000
FIP-P7 "Fogging"
Printout is blurry.
• This means that toner is adhering to the white areas of the printout.
initial check
Are any parts being used that have incorrect specifications, or that are installed incorrectly, damaged, bent, dirty or that have foreign particles adhering to them?
Related parts
The following parts are related to this problem. There may be a problem with one of these parts, so if the problem cannot be solved by following this FIP, replace the following parts
one by one and check.
BTR Assy (PL9.1.2), ROS Assy (PL11.1.1), HVPS Sub (PL12.1.9) and PWB Controller (PL16.1.5)
Item
PHD Assy (PL11.1.3)
1. Replace the PHD Assy.
1
2. Carry out a test print.
Does the same problem still occur?
Chute Assy In (PL6.1.1) grounding
2 Check the Chute Assy In grounding circuit.
Is the in Chute Assy In grounded?
Chute Assy Out (PL7.1.1) grounding
3 Check the Chute Assy Out grounding circuit.
Is the in Chute Assy Out grounded?
Troubleshooting
Description / initial check
Check
Level 2 FIP
Yes
Go to step 2. Problem solved.
Repair the location of the
Go to step 3.
grounding fault.
Repair the location of the
Go to step 4.
grounding fault.
Revision F
No
3-259