Power Supply - Konica Minolta bizhub 43 Service Manual

DN 3000329392 - 03
4.

POWER SUPPLY

There are 3 power supply
• Engine power supply board
• LVPS module
• DC/DC board
The "engine power supply board" supplies 5v and 3v3 for the MFP.
The "LVPS module" supplies 24V for the MFP in active mode and for the DC/DC board in sleep mode.
The "DC/DC board" supplies 3v3 in sleep mode ; this board is necessary because the power delivered
by the "engine power supply board" is not enough in sleep mode.
LVPS
P24V
(23 ->25)
@ 2,2A
P5V
(4,9 -> 5,1)
@ 2,5A
Printer XIP
Powers
deliveries
P3V3
(3,2 -> 3,5)
@ 4A
- 28 -
DC1
2.1W
Vout = 36 V
1.3A
Iout = 1,2 A
LM3478
rend = 93%
0.58A
DC2
1.4W
Vout = 18 V
0,55A
Iout = 800mA
MIC4690
rend = 88%
LDO2
0.4W
Vout =12V
Iout = 100 mA
MC78xx
1,5A
DC3
1A
Vout = 1.8V , 0.9V
Iout = 2,5 A
rend = 81%
DC4
Vout = 1,25 V 0.8W
1.1A
Iout = 2,5A
rend = 80% MAX8545
HFFv2 DC/DC board
P3V3
Step down
24V-3,3V
P24V
LDO1
1.9W
Vout =5V
Iout = 100 mA
NCV4276
LDO3
50mW
Vout =3.1V
Iout = 200 mA
RP100x
0.6W
TPS51116
P3V3_UC
(3,2->3,5) @4A
switch
alim
mainboard
P36VP 36V@0.8A ADF motor
FB motor
P24VP 24V@0,45A
CCFL LCD panel
P18VP 18V@500mA CCFL scanner
CCD
P12VP 12V@70mA
buffer AFE/CCD,
P5VP 5,1V@100mA
motor driver, HDD
P5VC 5,1V@0.7A USB host, FP timing
controller, DDR2
P3V1VP 3,1V@100mA modem
P3V35VP 3,35V@850mA logic
LCD Controller
P1V8P 1,8V@2A
DDR2
P0V9P 0.9V@ 0,2A
P1V25P 1,25V@2,3A 1% Zoran core