Detection Timing; C0500: Fuser Warm Up Error - Konica Minolta bizhub 160 Service Manual

20. Malfunction code
20.2.3

C0500: Fuser Warm Up Error

A. Detection Timing
• The voltage of the Thermistor remains low for a predetermined period of time when a warm-up cycle
is started.
• The temperature detected by the Thermistor remains lower than a reference value for a predeter-
mined period of time for the period of time that begins 5 sec. after, and ends 9 sec. after, the start of
the warm-up cycle (where the temperature detected by the Thermistor is 80 °C or less).
• The temperature detected by the Thermistor does not increase for a 3-sec. period or more for the
period of time that begins after the lapse of a predetermined period of time after the Fusing Roller
Heater Lamp has been turned ON and ends when the lamp is turned OFF.
• The Fusing Roller Heater Lamp remains ON for a 30-sec. period or more (except during the period
through which the Main Motor remains energized).
B. Troubleshooting Procedures
Fusing Unit
Thermistor (TH1)
Fusing Roller Heater Lamp (H1)
Step
1 Replace Thermistor (TH1).
2 Replace Fusing Unit.
3 Replace Controller/Mechanical Control
Board (PWB-P).
4 Replace Power Unit (PU1).
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Description
Relevant Electric Parts
Action
Field Service Ver. 1.0 Apr. 2005
Controller/Mechanical Control Board (PWB-P)
Thermostat (TS1)
Power Unit (PU1)
WIRING DIAGRAM
Control Signal
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–
–
–
Location
(Electric Parts)
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–
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