LG 28LJ400B Service Manual page 11

RT1
PIN52 M_SCL
M_I2C
PIN51 M_SDA
MSD3553
Main Board Power Tree
12V
1800mA + Panel Current
800mA
1000mA
TBD
3V3_STB
RT2
UT2
Si2159
Add_R 0xC1
Add_W 0xC0
PSU
800mA(eff=90%)
5V_STB
5V_STB
1730mA
DC-DC
MP9495 UD1
POW_EN
2000mA 500mA
150mA(eff=85%)
1.15V
DC-DC
LC2127
8ohm 5W
TAS5733L
200mA
3V3_STB
D-LDO
UL1
VCC-PANEL
POW_EN
UA1
TAS5733 LVDS
Addr Add_R
0x56
Add_W
230mA
5V_M
VCC_DDR
1230mA
D-LDO
270mA
3V3_M
D-LDO
UL1
MSD3553
700mA
UD1 U1
1000mA
USB2.0
200mA
MSD3553
150mA
U1
Copyright ⓒ 2017 LG Electronics Inc. All rights reserved.
- 11 -
Only training and service purposes.
MSD3553
120mAavg
230mApea k
U
UL1
1
270mA
Tuner TAS5733
200mA 68mA
UT2 U1