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20 July 2005
6.5.2 SMPS (SWITCHING MODE POWER SUPPLY)
This powers the entire system and is assembled by an independent module, so it is
possible to use it for common use. It is mounted at the bottom of the set and
consists 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 (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/2.0A. (When the fuser lamp is off and input/output
voltages are in range)
2. Rated Output Power
No.
Item
1
Channel name
2
Connector pin
3
Rated output
4
Maximum output
current
5
Peak loading current
6
Ripple noise voltage
7
Maximum output
8
Peak output
9
Overflow current
protection
3. Consumption Power
No.
Item
1
Stand-by
2
Printing
CH1
CH2
+3.3V
+5V
CON 3
CON 3
3.3V Pin: 3,4
5V Pin: 8
GND Pin: 5.6
GND Pin: 7
3.3 V ± 5%
5 V ± 5%
(3.2-3.4 V)
(4.75-5.25 V)
1.0 A
0.14 A
1.5 A
0.14 A
Less than 100
100 mV
mV
3.3 W
0.35 W
4.95 W
0.7 W
---
---
CH1-+3.3V
CH2-+5V
1.0 A
0.07 A
1.0 A
0.14 A
6-21
SMPS AND HVPS
CH3
Remark
+24V
CON 3
24V Pin: 11-13
GND Pin: 9-10
24 V ± 10%
(21.6-26.4 V)
2.0 A
2.5 A
1 ms
Less than 500
mV
48 W
60 W
1 ms
---
---
CH3-+24V
Remark
0.4 A
Ave: 55W
2.0 A
Ave: 55W
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