Fip-2.25 Tro Sensor Is Defective - Epson ColorPage EPL-C8200 Service Manual

EPSON ColorPage EPL-C8200

FIP-2.25 TRO SENSOR is Defective

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

Is the voltage level correct at the pins below?
2
- P17-12PIN<=>P17-14PIN: 5VDC
Check: Power supply to the TRO detection signal

Is the voltage level correct at the pins below?
3
- P17-13PIN<=>P17-14PIN: 5VDC
Check: TRO detection signal

Is the voltage level correct depending on the conditions
below?
- Pins: P/J17-13PIN<=>P/J17-14PIN
4
- Reflecting condition: 0VDC
(TRO mark in the IBT BELT ASSY is detected.)
- Unreflecting condition: 5VDC
(Area other than TRO mark in the IBT BELT ASSY is
detected.)
Check: MAIN HARNESS ASSY electrical continuity

Does the MAIN HARNESS ASSY have proper
5
continuity at the pins below?
- J116<=>J18
Chapter 5 Troubleshooting
Remedy
Yes
Replace/reinstall the defective part(s).
Go to Step 3.
Go to Step 4.
Replace the MCU PWB.
Replace the TRO 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 MAIN HARNESS.
Revision A
5-94