Epson AcuLaser C4000 Service Manual page 294

EPSON AcuLaser C4000/C4100/C3000
Step
Interface Cable
1. Replace the Interface Cable connecting the host computer and the printer.
7
2. Send a print command from the host computer.
Is the printer operation still unstable?
PWB Controller (PL16.1.5)
1. Replace the PWB Controller. (Refer to Ch4-4.2.19.1)
8
2. Send a print command from the host computer.
Is the printer operation still unstable?
PWBA MCU & HVPS (PL15.1.2)
1. Replace the PWBA MCU & HVPS. (Refer to Ch4-4.2.18.1)
9
2. Send a print command from the host computer.
Is the printer operation still unstable?
Troubleshooting
Check
Level 2 FIP
Treatment
Yes
Go to step 8. Problem solved.
Go to step 9. Problem solved.
Notify the customer that the
problem is probably with the Problem solved.
host computer.
Revision F
No
3-278