Power Source Pwb - Olivetti d-Copia 3003MF Service Manual

2-3 Operation of the PWBs

2-3-1 Power source PWB

AC input
Relay
YC104
1 1
YC107
SW101
Y113860-1
Power source PWB
Zero cross
signal circuit
Fuser heater
control circuit
Fuser thermostat
Figure 2-3-1 Power source PWB block diagram
YC108
1
1
1
YC106 YC105
1
YC103
Figure 2-3-2 Power source PWB silk-screen diagram
Switching
regulator
circuit
Interlock
switch
Fuser thermistor
Fuser heater
Fuser unit
1
YC102
2-3-1
2MH/2MJ/2MK/2ML
+24V1 Scanner
PWB
+24V1
Power
FAN
source
fan motor
Left
+24V1
cooling
FAN
fan motor
FAN
+24V1
+24V2
SLEEP
ZCROSS
HEATN
+3.3V2
THERM
1
YC101
Sevice Manual