T-13
(4)
Warm-up failure
<Detection Timing>
<Troubleshooting Procedures>
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
predetermined 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 Ther-
mistor 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).
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).
–
–
–
2
Replace Fusing Roller Heater
Lamp (H1).
–
–
–
3
Replace Thermostat (TS1).
–
–
–
4
Replace Fusing Unit.
–
–
–
5
Replace Controller/Mechanical
Control Board (PWB-P).
–
–
–
6
Replace Power Unit (PU1).
–
–
–
Summary of Contents for MF Series
Page 1: ...XEROX TECHNICAL DOCUMENT 252 787 467 A...
Page 73: ...4 NI IPL 252 787 467 A PLANCHE 1 FIGURE 1 3 2 1 4 7 6 5...
Page 75: ...6 NI IPL 252 787 467 A PLANCHE 2 FIGURE 2 1 3 5 6 2 4...
Page 77: ...8 NI IPL 252 787 467 A 2 1 PLANCHE 3 FIGURE 3...
Page 79: ...10 NI IPL 252 787 467 A PLANCHE 4 FIGURE 4 1 5 6 7 4 3 2 8...
Page 81: ...12 NI IPL 252 787 467 A 1 4 2 3 7 8 5 6 PLANCHE 5 FIGURE 5...
Page 83: ...14 NI IPL 252 787 467 A 1 2 3 4 5 6 7 8 PLANCHE 6 FIGURE 6...
Page 85: ...16 NI IPL 252 787 467 A 1 2 PLANCHE 7 FIGURE 7...
Page 87: ...18 NI IPL 252 787 467 A PLANCHE 8 FIGURE 8 1 2 4 5 3...
Page 89: ...20 NI IPL 252 787 467 A PLANCHE 9 FIGURE 9...
Page 91: ...22 NI IPL 252 787 467 A 2 1 PLANCHE 10 FIGURE 10...
Page 93: ...24 NI IPL 252 787 467 A 3 HV1 2 1 PLANCHE 11 FIGURE 11...
Page 95: ...26 NI IPL 252 787 467 A 1 22 21 3 4 2 8 9 7 6 PLANCHE 12 FIGURE 12...
Page 98: ...PRINTER 20 PPM SERVICE MANUAL TECHNICAL DOCUMENT 251 475 943 A...
Page 113: ...INDEX MECHANICAL ELECTRICAL GENERAL TROUBLESHOOTING DIS REASSEMBLY ADJUSTMENT MAINTENANCE...
Page 117: ...GENERAL...
Page 123: ...MECHANICAL ELECTRICAL...
Page 146: ...MAINTENANCE...
Page 156: ...DIS REASSEMBLY ADJUSTMENT...
Page 168: ...TROUBLESHOOTING...