T-20
(5)
C0520: Fuser overheat
<Detection Timing>
<Troubleshooting Procedures>
Description
• The temperature detected by the Thermistor remains higher than 235 °C for a predeter-
mined period of time while the fusing temperature control is being provided.
Relevant Electric Parts
Fusing Unit
Thermistor (TH1)
Fusing Roller Heater Lamp (H1)
Controller/Mechanical Control Board (PWB-P)
Thermostat (TS1)
Power Unit (PU1)
Step
Action
Ref. Page
WIRING DIAGRAM
Control Signal
Location
(Electric Parts)
1
Replace Thermistor (TH1).
☞
D-28
–
–
2
Replace Fusing Unit.
☞
E-7
–
–
3
Replace Controller/Mechanical
Control Board (PWB-P).
☞
D-12
–
–
4
Replace Power Unit (PU1).
☞
D-15
–
–
Содержание NEFAX 671
Страница 1: ...SERVICE MANUAL FIELD SERVICE NEC Unified Solutions Inc NEFAX 671 691...
Страница 271: ...T 9 2 5 Location of Misfeed Detection Sensors Exit Sensor PS1 Paper Take Up Switch S1...
Страница 314: ...PF 125 Service Manual...
Страница 323: ......