Epson ColorPage EPL-C8000 Service Manual page 416

EPSON EPL-C8000
FIP-2.17 WASTE TONER SENSOR is Defective
Step Check point
Perform the preliminary inspection.
Parts to inspect:
1
WASTE TONER SENSOR, WASTE TONER BOX,
TONER BOX HARNESS, MAIN HARNESS ASSY, MCU
PWB
Check: Power supply to the WASTE TONER SENSOR
l
2
Is the voltage level correct at the pins below?
- P18-A3PIN<=>P18-A1PIN: 5VDC
Check:
Power supply to the WASTE TONER detection signal
3
l
Is the voltage level correct at the pins below?
- P18-A2PIN <=>P18-A1PIN: 5VDC
Check: WASTE TONER detection signal
l
Is the voltage level correct depending on the conditions
below?
- Pins: P/J18-A2PIN <=>P/J18-A1PIN
4
- Passed condition: 0VDC
(=Waste toner level is Low.)
- Blocked condition: 5VDC
(=Waste toner level is High=Full)
Check: TONER BOX HARNESS electrical continuity
l
Does the TONER BOX HARNESS have proper
5
continuity at the pin below?
- J88<=>P116
Check: MAIN HARNESS ASSY electrical continuity
l
Does the MAIN HARNESS ASSY have proper
6
continuity at the pin below?
- J116<=>J18
Chapter 5 TROUBLESHOOTING
Remedy
Yes
Replace/reinstall the defective part(s).
Go to Step 3.
Go to Step 4.
Go to Step MCU PWB
Go to Step 6.
Replace the WASTE TONER
SENSOR.
No
Go to Step 2.
Go to FIP-2.1 "LVPS 5VDC is
Defective".
Go to Step MCU PWB
Go to Step 5.
Replace the TONER BOX HARNESS.
Replace the MAIN HARNESS ASSY.
Rev. B
5-82