Minolta Di450 Service Manual page 456

(10) C0500: Warming-up failure
C0510: Abnormally low fusing temperature
C0520: Abnormally high fusing temperature
Upper Fusing Roller Heater Lamp (H1)
Lower Fusing Roller Heater Lamp (H2)
Upper Fusing Roller Thermistor (TH1)
Lower Fusing Roller Thermistor (TH2)
TH1
TH2
TS1
CN210
H1
1 1
Relevant Electrical Parts
Upper Fusing Roller Thermostat (TS1)
DC Power Supply Main (PU1)
Master Board (PWB-A)
CN11
CN217
1 1
2 2
1 4 3 3
2 3 4 4
3 2 5 5
4 1 6 6
7 7
8 8
9 9
CN218
10 10
11 11
1 4 12 12
13 13
2 3
3 2 14 14
4 1 15 15
16 16
CN212
1 1
CN211
H2
1 1
T-48
PU1
CN3-1(HIL)
CN3-4(HIN)
CN14-1(H1 REM)
CN14-2(H2 REM)
CN5-1(H2L)
CN5-4(H2N)
PWB-A
PJ7A-13A(GND)
PJ7A-12A(TH2)
PJ7A-11A(TH2 REM)
PJ7A-10A(GND)
PJ7A-9A(TH1)
PJ7A-8A(TH1 REM)
4002C13TAB