Oki B721 Maintenance Manual page 221

Oki Data CONFIDENTIAL
Electrical circuit diagram,
Unit
connection
Upper (Halogen heater)
800W
Thermostat
1
Lower
3
(Halogen heater)
Upper
400W
2
4
09P-RWZV-K4GG-P4
Upper
Thermistor
(PM9-342)
Fuser unit
Compensation
Thermistor
(PT3-312)
09P-RWZV-K4GG-P4
Upper Side
Thermistor
(PTA7-312)
Fuse
09P-RWZV-K4GG-P4
45487001TH Rev.1
Part outside view
CZHR-05V-S
A5
1
A4
2
A3
3
A2
4
A1
5
CZHR-04V-S
B4
1
B3
2 1 2
B2
3
B1
4
4 3 4pin(B4)
Between pins -A5 and -A4: Approx. 80.58kΩ to 5338kΩ (0 to 93°C)
Between pins -A3 and -A2: Approx. 104.5kΩ to 806.5kΩ (0 to 43°C)
Between pins -B4 and -B3: Approx. 104.5kΩ to 806.5kΩ (0 to 43°C)
Between pins -B2 and -B1: Open
5pin(A5)
7. Connection diagrams
Resistance value
7-4 /