Konica Minolta PagePro 1390 MF - Manual (Page 125)

T-15
(5) 080: Fuser warm up error
<Detection Timing>
<Troubleshooting Procedure>
Description
• 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
9 second period of time for the period of time that begins 5 seconds 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 second or longer
period of time beginning after the lapse of a predetermined period of time after the Fus-
ing Roller Heater Lamp has been turned ON and ending when the lamp is turned OFF.
• The Fusing Roller Heater Lamp remains ON for a 30 second or longer period of time
(except during the period through which the Main Motor remains energized).
Relevant Electrical Parts
Fusing Unit
Thermistor (TH1) Mechanical Control Board (PWB-A)
Thermostat (TS1)
Power Unit (PU1)
Step Action Ref. Page
WIRING DIAGRAM
Control Signal
Location
(Electrical Parts)
1 Replace the Thermistor (TH1).
☞ D-28
– –
2 Replace the Fusing Unit.
☞ E-8
– –
3 Replace PWB-A.
☞ D-11
– –
4 Replace the Power Unit (PU1).
☞ D-14
– –