Level 2 Fip (Fault Isolation Procedure); Fip-2.1 Lvps 5Vdc Is Defective - Epson ColorPage EPL-C8000 Service Manual

EPSON EPL-C8000

5.3 Level 2 FIP (Fault Isolation Procedure)

This section describes how to isolate the faulty unit (assembly) by using
the Level 2 FIPs.
<Preliminary inspection>
In each FIP, you are required to perform the
"Preliminary inspection" prior to any other actions.
The Preliminary inspection involves the following:
n Check for any part that does not meet the
specifications.
n Check if any part has been installed improperly.
n Check for part that is damaged, deformed, smeared,
or lodged with foreign matter.

FIP-2.1 LVPS 5VDC is Defective

Step Check point
Perform the preliminary inspection.
1
Parts to inspect:
LVPS, MCU PWB, MAIN HARNESS ASSY
l
Check: LVPS
Is the voltage level correct at the pins below?
2 - P33-6PIN<=>P33-8PIN: 5VDC
- P33-5PIN<=>P33-7PIN: 5VDC
- P33-3PIN<=>P33-4PIN: 5VDC
l
Check: MAIN HARNESS ASSY electrical continuity
Does the MAIN HARNESS ASSY have proper continuity at
3
the pins below?
- J33<=>J12
Chapter 5 TROUBLESHOOTING
Remedy
Yes
Replace/reinstall the defective part(s).
Go to Step 3.
Replace the MCU PWB.
No
Go to Step 2.
Replace the LVPS.
Replace the MAIN HARNESS ASSY.
Rev. B
5-64