Epson ColorPage EPL-C8000 Service Manual page 429

EPSON EPL-C8000
FIP-2.29 TEMP. SENSOR ASSEMBLY is Defective
Step Check point
Perform the preliminary inspection.
Parts to inspect:
1
TEMP. SENSOR ASSY, MAIN HARNESS ASSY, FUSER
HARNESS ASSY, MCU PWB
Check: Thermistor in the TEMP. SENSOR ASSY
l
2
Is the detection area of the thermistor smeared or
lodged with any foreign matter?
Check:
TEMP. SENSOR ASSY for thermistor resistance
l
Is the resistance correct at the pins below?
3
- Pins: P72-4PIN<=>P72-5PIN
- Resistance: 240 k (at 18 20 C)
Check: FUSER HARNESS ASSY electrical continuity
l
Does the FUSER HARNESS ASSY have proper
4
continuity at the pins below?
- J71<=>J72
Check: MAIN HARNESS ASSY
l
Does the MAIN HARNESS ASSY have proper
5
continuity at the pins below?
- P71<=>J19
Chapter 5 TROUBLESHOOTING
Remedy
Yes
Replace/reinstall the defective part(s).
Replace/clean the TEMP. SENSOR
ASSY.
Go to Step 4.
Go to Step 5.
Replace the MCU PWB.
No
Go to Step 2.
Go to Step 3.
Replace/clean the TEMP. SENSOR
ASSY.
Replace the FUSER HARNESS ASSY.
Replace the MAIN HARNESS ASSY.
Rev. B
5-95