4-16
Summary of Product
Samsung Electronics
Service Manual
4-16
SUMMARY OF PRODUCT
Samsung Electronics
Training Manual
4.4.2 SMPS(Switching Mode Power Supply)
It is the power source of entire system. It is assembled by an independent module, so it is possible to use
for common use. It is mounted at the bottom of the set.
It is consisted of the AMPS part, which supplies the DC power for driving the system, and the AC heater
control part, which supplies the power to fuser. SMPS has two output channels. Which are 3.3V and +24V.
1) AC Input
- Input Rated voltage : AC 220V ~ 240V AC 120V / AC 220V(EXP version)
- Input Voltage range : AC 198V ~ 264V AC 90V ~ 135V / AC 198V ~ 264V(EXP version)
- Rated Frequency : 50/60 Hz
- Frequency range : 47 ~ 63 Hz
- Input Current : Under 4.0A rms/2.0A rms
(When the fuser lamp is off and input / output voltages are in range)
2) Rated Output Power
3) Consumption Power
NO Item CH1 CH2 CH3 System
(+3.3V) (+5V) (24V)
1 Stand-By 1.0 A 0.07A 0.4 A AVG : 55 Wh
2 PRINTING 1.0 A 0.14A 2.0 A AVG : 280 Wh
NO Item CH1 CH2 CH3 Remark
1 Channel name +3.3V +5V +24.0V
2 CONNECTOR PIN CON 3 CON3 CON 3
3.3V PIN: 3, 4 5V PIN : 8 24V PIN: 11, 12, 13
GND PIN: 5, 6 GND PIN: 7 GND : 9. 10
3 Rated output 3.3V ± 5% +5V ± 5% +24V ± 10%
(3.2 ~ 3.4V) (4.75 ~ 5.25V) (21.6 ~ 26.4V)
4 Maxi output current 1.0 A 0.14A 2.0 A
5 Peak loading current 1.5 A 0.14A 2.5 A 1ms
6 Ripple noise voltage Under 100mVp-p 100mVp-p Under 500mVp-p
7 Maximum output 3.3W 0.35W 48W
8 Peak output 4.95W 0.7W 60W 1ms
9 Protection for loading shortage - -
and overflowing current
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