SMPS AND HVPS
B273 6-14 SM
6.4.2 SMPS(SWITCHING MODE POWER SUPPLY)
SMPS is the power source for the entire system. It is mounted at the bottom of the
machine and consists of the SMPS area, which supplies DC power to drive the
system. SMPS also supplies power to the AC heater control area, which supplies
the power to the fusing unit. The SMPS has four output channels (+5V, +24V, and
24VS).
The SMPS supplies the following power types:
• North America: 120V
• Europe: 220V
• China (and nations with unpredictable power sources): 220V
1. AC Input
• Input rated voltage : AC 220V ~ 240V, AC 120V / AC 220V
• 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 5.0A/2.5A (when the fusing lamp is off and input/output
voltages are in range)
2. Rated Output Power
No Item CH2 CH3 Remark
1 Channel Name +5V +24V
2 Connector pin Con 23
5V pin: 3, 4
GND pin 5-7
Con 23
24V pin: 11-13
GND pin 9, 10,18
3 Rated output
+5V and 5%
(4.75 to 5.25V)
+24V and 10%
(21.6 to 26.4V)
4 Maximum output current 0.14A 2.0A
5 Peak loading current 0.14A 2.5A 1ms
6 Ripple noise voltage 100mV Under 500Mv
7 Maximum output power 0.35W 48W
8 Peak output power 0.7W 60W 1ms
3. Power Consumption
No Item CH2 (+5V) CH3 (+24V) Remark
1 Stand-by 0.07A 0.4A Ave. 55W
2 Printing 0.14A 2.0A Ave. 350W
3
Energy saver
mode
0.01A 0.4A Ave. 20W
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