Epson ColorPage EPL-C8000 Service Manual page 427

EPSON EPL-C8000
FIP-2.27 FUSER IN SENSOR is Defective
Step Check point
Perform the preliminary inspection.
Parts to inspect:
1
FUSER IN SENSOR, MAIN HARNESS ASSY, FUSER
HARNESS ASSY, FUSER IN HARNESS, MCU PWB
Check: Power supply to the FUSER IN SENSOR
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2 Is the voltage level correct at the pins below?
- P19-7PIN<=>P19-8PIN: 5VDC
Check: Power supply to the FUSER IN detection signal
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3 Is the voltage level correct at the pins below?
- P19-8PIN<=>P19-9PIN: 5VDC
Check: FUSER IN detection signal
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Is the voltage level correct depending on the conditions
below?
4
- Pins: P/J19-8PIN<=>P/J19-9PIN
- Passed condition (paper is set.): 0VDC
- Blocked condition (no paper is set.): 5VDC
Check: FUSER IN HARNESS electrical continuity
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Does the FUSER IN HARNESS have proper continuity
5
at the pin below?
- J117<=>P76
Check: FUSER HARNESS ASSY electrical continuity
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Does the FUSER HARNESS ASSY have proper
6
continuity at the pins below?
- J71<=>J76
Check: MAIN HARNESS ASSY electrical continuity
7
- P71<=>J19
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.
Go to Step 7.
Replace the FUSER IN SENSOR.
No
Go to Step 2.
Go to FIP-2.1 "LVPS 5VDC is
Defective".
Replace the MCU PWB.
Go to Step 5.
Replace the FUSER IN HARNESS.
Replace the FUSER HARNESS ASSY.
Replace the MAIN HARNESS ASSY.
Rev. B
5-93