Fip-2.7 Msi Short N/P Sensor Is Defective - Epson ColorPage EPL-C8000 Service Manual

EPSON EPL-C8000

FIP-2.7 MSI SHORT N/P SENSOR is Defective

Step Check point
Perform the preliminary inspection.
Parts to inspect:
1
MSI SHORT N/P SENSOR, MSI HARNESS ASSY, REGI.
HARNESS ASSY, P/H HARNESS ASSY, MCU PWB
Check: MSI SHORT N/P detection signal
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2 Is the voltage level correct at the pins below?
- P20-32PIN<=>P20-33PIN: 5VDC
Check:
Power supply to the MSI SHORT N/P detection signal
3
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Is the voltage level correct at the pins below?
- P20-34PIN<=>P20-33PIN: 5VDC
Check: MSI SHORT N/P detection signal
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Is the voltage level correct depending on the conditions
below?
4
- Pins: P/J20-34PIN<=>P/J20-33PIN
- Passed condition (paper is set): 0VDC
- Blocked condition (no paper is set): 5VDC
Check: MSI HARNESS ASSY electrical continuity
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Does the MSI HARNESS ASSY have proper continuity
5
at the pins below?
- J203<=>P113
Check: REGI. HARNESS ASSY electrical continuity
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Does the REGI. HARNESS ASSY have proper
6
continuity at the pins below?
- J113<=>J91
Check: P/H HARNESS ASSY
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Does the P/H HARNESS ASSY have proper continuity
7
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.
Go to Step 7.
Replace the MSI SHORT 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
5-72