Dell 1600n - Multifunction Laser Printer B/W Service Manual page 166

Circuit Diagram
11.7.2 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 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 120V / AC 220V(EXP version)
> Input Voltage fluctuating range : AC 198V ~ 264V AC 90V ~ 135V / AC 198V ~ 264V
> 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 voltage
5 Peak Loading voltage
6 RIPPLE NOISE
Voltage
7 Maximum output
8 Peak output
9 Protection for loading
shortage and
overflowing current
Service Manual
11-18
CH2
+5V
CON 3
5V PIN: 8
GND PIN: 7
+5V & 5%
(4.75 % 5.25V)
0.14 A
0.14 A
100mVp-p
0.35W
0.7W
CH3
+24.0V
CON 3
24V PIN:11,12,13
GND PIN:9,10
+24V & 10%
(21.6 % 26.4V)
2.0 A
2.5 A
Under 500mVp-p
48W
60W
-
Remark
1ms
1ms