Samsung SCX-4200 Series Service Manual page 32

System Overview
Supply
- Output Voltage : -400 V ~ -800V DC
- Input contrast of the output stability degree : under
Loading contrast :
- Output Voltage Rising Time: 50 ms Max
- Output Voltage Falling Time: 50 ms Max
- Output Loading Range: 10 M
- Output Control Signal (BIAS-PWM): the CPU is HV output when PWM is low.
3.2.6.2 SMPS (Switching Mode Power Supply)
It is the power source of entire system. It is assembled by an independent module and completely common use
with SCX-4200, so it is same characteristic with SCX-4200. It is mounted at the bottom of the set.
It is consisted of the SMPS 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 +5V and +24V.
AC Input
- Input Rated Voltage: AC 220V ~ 240V AC 110V ~ 127V
- Input Voltage fluctuating Range: AC 198V ~ 264V AC 99V ~ 135V
- Rated Frequency: 50/60 Hz
- Frequency Fluctuating Range: 47 ~ 63 Hz
- Input Current: Under 5.0Arms / 2.5Arms (But, the status when lamp is off or rated voltage is inputted/outputted )
Rated Output Power
NO ITEM
1 CHANNEL NAME
2 CONNECTOR PIN
3 Rated Output
4 Max. Output current
5 Peak Loading voltage
6 RIPPLE NOISE
Voltage
7 Maximum output
Service Manual
3-16
5%(ZENER using, DEV )
5 % or less
~ 1000 M
CH1
+5V
CON2
5V PIN 3, 4, 24
GND PIN 5,6
+5V 5%
(4.75~5.25V)
1.0A
1.5A
Under 150m Vp-p Under500mVp-p
5.0W
3 %
CH2 CH3
+24V +24.0VS
CON 2 CON 2
24V PIN:13 24VS PIN:11, 12
GND PIN:7, 9, 10 GND PIN:7, 9, 10
+24V-10/15% +24VS-10/15%
(21.6~27.6V) (21.6~27.46V)
0.5 A 1.0 A
1.0 A 1.5 A
Under 500mVp-p
12W 24W
Remark
1ms
Samsung Electronics