2HJ/2HK-1
2-3-1
2-3-1
Operation of the PWBs
(1) Power supply PWB
Figure 2-3-1Power supply PWB block diagram
*:
16/17 ppm printer [EUR/USA model] only.
Power
switch
AC
input
Power supply PWB
Noise
filter
circuit
Rectifier
circuit
Engine
controller
PWB
+24V1
GND
24 V DC
rectifier/
smoothing
circuit
5 V DC
rectifier/
smoothing
circuit
FET
(Q1)
(Q2)
Transformer
(T1)
+
Zero cross
signal
generation
circuit
Switching control
circuit (IC1)
Fuser
thermostat 1
Fuser
thermostat 2*
Fuser
thermistor 1
Fuser
thermistor 2*
Fuser
heater
lamp 1
Fuser
heater
lamp 2*
Triac
(TRA1)
Triac
(TRA2)
Photo-
coupler
(PC4)
Photo-
coupler
(PC5)
Photo-
coupler
(PC3)
Photo-
coupler
(PC1)
Photo-
coupler
(PC2)
DC-DC
converter
circuit
Over
voltage/
current
detection
circuit
+3.3V1
ZCROSS
GND
HEAT2DR
HEAT1DR
TH1
TH2
FUDR
FDDR
EXITPAPN
Exit sensor
Fuser PWB
Face up/down
solenoid
+5V1
Current
fuse
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Содержание FS-C5015N
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