Specifications

2.10 CODE #52 — FUSING WARM-UP ERROR
- Definition -
The temperature detected by the thermistor does not reach 175
o
C within 100
seconds after the main switch is turned on.
- Possible Causes -
• Thermistor position error
• Fusing lamp open
• Thermofuse open
• AC drive board defective
• Main board defective
- Action -
Clear the service call condition.
Does the fusing lamp turn on?
Yes No
Is the fusing lamp open?
No Yes
Replace the fusing lamp.
Is the thermofuse open?
No Yes
Replace the thermofuse.
If the ac harness is defective, replace it.
Check the voltage at CN122-12 on the main board.
0V 24V
Replace the main board.
1 December 1990
6-40