Epson ColorPage EPL-C8000 Service Manual page 417

EPSON EPL-C8000
FIP-2.18 TONER BOX SENSOR is Defective
Step Check point
Perform the preliminary inspection.
Parts to inspect:
1
TONER BOX SENSOR, TONER BOX HARNESS, MAIN
HARNESS ASSY, MCU PWB
Check: Power supply to the TONER BOX SENSOR
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2 Is the voltage level correct at the pins below?
- P18-A6PIN<=>P18-A5PIN: 5VDC
Check: TONER BOX detection signal
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3 Is the voltage level correct at the pins below?
- P18-A6PIN<=>P18-A5PIN: 5VDC
Check: TONER BOX detection signal
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Is the voltage level correct depending on the conditions
below?
- Pin: P/J18-A6PIN<=>P/J18-A5PIN
4
- Passed condition: 0VDC
(=WASTE TONER BOX is installed)
- Blocked condition: 5VDC
(=WASTE TONER BOX is not installed.)
Check: TONER BOX HARNESS electrical continuity
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Does the TONER BOX HARNESS have proper
5
continuity at the pins below?
- J83<=>P116
Check: MAIN HARNESS ASSY electrical continuity
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Does the MAIN HARNESS ASSY have proper
6
continuity at the pins below?
- J116<=>J18
Chapter 5 TROUBLESHOOTING
Remedy
Yes
Replace/reinstall the defective part(s).
Go to Step 3.
Go go step 4.
Replace the MCU PWB.
Go to Step 6.
Replace the TONER BOX 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 TONER BOX HARNESS.
Replace the MAIN HARNESS.
Rev. B
5-83