Oki C9500 Maintenance Manual page 143

Unit Circuit Diagram
1 Upper roller
Heater
a
Thermostat1 Thermostat2
b
Thermistor
Fuser Unit
c
d
Thermistor
e
Left
f
2 Backup roller
Heater
a
b
Thermistor
c
d
Fuse
e
f
Illustration
1. Upper roller side
1
a
b
Between pins a and b:
Between pins c and d: 231.4k (at 25 °C)
Between pins e and f: 231.4k (at 25 °C)
e f
c d
2
Between pins a and b:
Between pins c and d: 0 or open
Between pins e and f: 231.4k (at 25 °C)
2. Backup roller side
Resistance