Epson ColorPage EPL-C8000 Service Manual page 413

EPSON EPL-C8000
FIP-2.14 REGI. SENSOR is Defective
Step Check point
Perform the preliminary inspection.
Parts to inspect:
1
REGI.SENSOR, REGI. HARNESS ASSY,
P/H HARNESS ASSY, MCU PWB
Check: Power supply to the REGI. SENSOR
l
2 Is the voltage level correct at the pins below?
- P20-3PIN<=>P20-1PIN: 5VDC
Check: Power supply to the REGI. detection signal
l
3 Is the voltage level correct at the pins below?
- P20-2PIN<=>P20-1PIN: 5VDC
Check: REGI. detection signal
l
Is the voltage level correct depending on the conditions
below?
4
- Pins: P/J20-2PIN<=>P/J20-1PIN
- Reflecting condition (paper is set): 0VDC
- Unreflecting condition (no paper is set): 5VDC
Check: REGI. HARNESS ASSY electrical continuity?
l
Does the REGI. HARNESS ASSY have proper
5
continuity at the pins below?
- J93<=>J91
Check: P/H HARNESS ASSY
l
Does the P/H HARNESS ASSY have proper continuity
6
at the pins below?
- P91<=>J20
Chapter 5 TROUBLESHOOTING
Remedy
Yes
Replace/reinstall the defective part(s).
Go to Step 3.
Go to Step 4.
Replace the MCU PWB.
Go to Step 6.
Replace the REGI.SENSOR.
No
Go to Step 2.
Go to FIP-2.1 "LVPS 5VDC is
Defective".
Replace the MCU PWB.
Replace the Go to Step 5.
Replace the REGI. HARNESS ASSY.
Replace the P/H HARNESS ASSY.
Rev. B
5-79