Fip-2.8 Msi Long N/P Sensor Is Defective - Epson ColorPage EPL-C8000 Service Manual

EPSON EPL-C8000

FIP-2.8 MSI LONG N/P SENSOR is Defective

Step Check point
Perform the preliminary inspection.
Parts to inspect:
1
MSI LONG N/P SENSOR, MSI HARNESS ASSY, REGI.
HARNESS ASSY, P/H HARNESS ASSY, MCU PWB
Check: Power supply to the MSI LONG N/P SENSOR
l
2 Is the voltage level correct at the pins below?
- P20-11PIN<=>P20-13PIN: 5VDC
Check:
Power supply to the MSI LONG N/P detection signal
3
l
Is the voltage level correct at the pins below?
- P20-14PIN<=>P20-13PIN: 5VDC
Check: MSI LONG N/Pdetection signal
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Is the voltage level correct depending on the conditions
below?
4
- Pins: P/J20-14PIN<=>P/J20-13PIN
- Reflecting condition (paper is set): 0VDC
- Unreflecting condition (no paper is set): 5VDC
Check: MSI HARNESS ASSY
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Does the MSI HARNESS ASSY have proper continuity
5
at the pins below?
- J206<=>P92
Check: REGI. HARNESS ASSY electrical continuity
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Does the REGI. HARNESS ASSY have proper
6
continuity at the pins below?
- J92<=>J91
Check: P/H HARNESS ASSY
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Does the P/H HARNESS ASSY have proper continuity
7
at the pins below?
- 91<=>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.
Go to Step 7.
Replace the MSI LONG N/P 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 MSI HARNESS ASSY.
Replace the REGI. HARNESS ASSY.
Replace the P/H HARNESS ASSY.
Rev. B
5-73