Epson AcuLaser C4000 Service Manual page 264

EPSON AcuLaser C4000/C4100/C3000
Item
Laser beam path
1. Check that thee are no obstructions to the laser beam path between the ROS Assy
(PL11.1.1) and the Drum.
4
2. Check that the window of the ROS Assy is not dirty.
Is the laser beam path free from obstructions, and is the window of the ROS Assy
clean?
ROS Assy (PL11.1.1)
1. Replace the ROS Assy. (Refer to Ch4-4.2.14.1)
5
2. Carry out a test print.
Is the image density normal?
BTR Assy (PL9.1.2)
6 Check the BTR Assy roller.
Is the BTR Assy roller dirty or worn?
Wire Assy BTR2 (PL6.1.2), Spring BTR R2 (PL6.1.3), Shaft BTR In (PL6.1.4)
7 Check the continuity between Wire Assy BTR2 <=> Shaft BTR In.
Is there continuity between Wire Assy BTR2 <=> Shaft BTR In?
Troubleshooting
Check
Level 2 FIP
Yes
Remove the obstruction or clean
Go to step 5. the window of the ROS Assy
(PL11.1.1).
Problem solved. Go to step 6.
Replace the BTR Assy.
Go to step 7.
(Refer to Ch4-4.2.12.2)
Replace the PWBA MCU & Replace the part that is
HVPS. (Refer to Ch4-4.2.18.1) preventing continuity.
Revision F
No
3-248