Epson AcuLaser C8500 Service Manual page 460

EPSON AcuLaser C8500
FIP-2.27 Faulty TEMP. SENSOR ASSY FIP-2.27 Faulty TEMP. SENSOR ASSY FIP-2.27 Faulty TEMP. SENSOR ASSY FIP-2.27 Faulty TEMP. SENSOR ASSY
Step
*Initial setting
Use of any non-EPSON specifications, improper mounting, damage, distortion, dirt, adherence
of foreign matter?
1
*Main parts to check
TEMP. SENSOR ASSY, MAIN HARNESS ASSY
FUSER HARNESS ASSY, MCU PWB
*TEMP. SENSOR ASSY thermistor check
2
Is there dirt or foreign matter on the detection surface of the thermistor?
*TEMP. SENSOR ASSY thermistor resistance check
3
Ω Ω Ω Ω
Is there 240k
*FUSER HARNESS ASSY continuity check
4
Is there a proper continuity between J71B <=> J72?
*MAIN HARNESS ASSY continuity check
5
Is there a proper continuity between P71B <=> J19?
Troubleshooting
Check
between P72-2PIN <=> P72-4PIN at room temperature (18 - 20
Level 2 FIP (Fault Isolation Procedure
Yes
Replace and remount
the concerned part(s).
Replace and clean the
TEMP. SENSOR ASSY.
Go to step 4.
0 C)?
Go to step 5.
Replace and remount
the concerned part(s).
Revision C
Treatment
No
Go to step 2.
Go to step 3.
Replace and clean the
TEMP. SENSOR ASSY.
Replace the FUSER
HARNESS ASSY.
Go to step 2.
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