44951501TH Rev.2
8-4
Oki Data CONFIDENTIAL
8. CONNECTION DIAGRAMS
Unit Circuit diagram and composition Part drawing Resistance value
Fuser unit
2
Upper roller heater #1
Upper roller heater #2
3
1
4
Thermostat
Upper thermistor
A1
A2
Lower thermistor
B1
B2
Frame thermistor
A3
A4
B3
B4
Fuse
2A5 4 3 2 11
3B1 2 3 44
Between pins 1 and 2: Several ohms to several tens of ohms
Between pins 3 and 4: Several ohms to several tens of ohms
Between pins A1 and A2: Approx. 590 k
to 5338 k (0 to 93°C)
Between pins B1 and B2: Approx. 104.5 k
to 806.5 k (0 to 43°C)
Between pins A3 and A4: Approx. 104.5 k
to 806.5 k (0 to 43°C)
Between pins B3 and B4: Open
A5 blank NC
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