Fip-2.20 Adc Sensor Is Defective; Fip-2.21 Adc Solenoid Is Defective - Epson ColorPage EPL-C8200 Service Manual

EPSON ColorPage EPL-C8200

FIP-2.20 ADC SENSOR is Defective

Step Check point
Perform the preliminary inspection.
1 Parts to inspect:
ADC SENSOR ASSY, MAIN HARNESS ASSY, MCU PWB
Check: Power supply to the ADC Sensor

Is the voltage level correct at the pins below?
2
- P17-18PIN<=>P17-21PIN: 5VDC
Check: MAIN HARNESS ASSY electrical continuity

Does the MAIN HARNESS ASSY have proper
3
continuity at the pins below?
- J17<=>J81
Check: ADC SENSOR ASSY replacement

4 Does the problem still occur after replacing the ADC
SENSOR ASSY?

FIP-2.21 ADC SOLENOID is Defective

Step Check point
Perform the preliminary inspection.
Parts to inspect:
1
ADC SENSOR ASSY, MAIN HARNESS ASSY, MCU
PWB
Check: Power supply to the ADC Solenoid

Is the voltage level correct at the pins below?
2
- P/J17-22PIN<=>P/J17-23PIN: 24VDC
Check: ADC Solenoid

Does the ADC Solenoid have proper continuity at the
pins below?
3
- Pins: J17-22PIN<=> 17-23PIN
- Resistance: 36
Check: MAIN HARNESS ASSY

Does the MAIN HARNESS ASSY have proper
4
continuity at the pins below?
- J17<=>P81
Chapter 5 Troubleshooting
Yes
Replace/reinstall the defective part(s).
Go to Step 3.
Go to Step 4.
Replace the MCU PWB.
Yes
Replace/reinstall the defective part(s).
Go to Step 3.
Replace the MCU PWB.
-
Remedy
No
Go to Step 2.
Go to FIP-2.1 "LVPS 5VDC is
Defective".
Replace the MAIN HARNESS ASSY.
Problem solved.
Remedy
No
Go to Step 2.
Go to FIP-2.2 "LVPS 24VDC is
Defective".
Go to Step 4.
Replace the MAIN HARNESS ASSY.
Revision A
5-90