Epson ColorPage EPL-C8000 Service Manual page 423

EPSON EPL-C8000
FIP-2.23 USED CART. SENSOR is Defective
Step Check point
Perform the preliminary inspection.
Parts to inspect:
1
USED CART. SENSOR, MAIN HARNESS ASSY, MCU
PWB
Check: Power supply to the USED CART. SENSOR
l
2 Is the voltage level correct at the pins below?
- P17-3PIN<=>P17-1PIN: 5VDC
Check:
Power supply to the USED CART. detection signal
3
l
Is the voltage level correct at the pins below?
- P17-2PIN<=>P17-1PIN: 5VDC
Check: USED CART. detection signal
l
Is the voltage level correct depending on the conditions
below?
4
- Pins: P/J17-2PIN<=>P/J17-1PIN
- Passed condition (Cartridge is new): 0VDC
- Blocked condition (Cartridge is old): 5VDC
Check: MAIN HARNESS ASSY electrical continuity
l
Does the MAIN HARNESS ASSY have proper
5
continuity at the pins below?
- J17<=>J87
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 USED CART. 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.
Rev. B
5-89