Read LG 55LH80YD (CHASSIS:LB91F) Service Manual online
PAL CHIP
TUNER
XC5000
LCD/PDP
DIGITAL TV
PROCESSOR
[LGE3369A]
HDMI
Switch
(4-to-1)
[TDA9996]
IF
MiCOM
[WT61P8S]
I2C_CH4
I2C_CH1
I2C_CH2
3.3V_2
3.3V_L
3.3V_2
1.8V_1
3.3V_2
5.0V_1
TX_SEL
1.26V_1
1.8V_DDR
3.3V_1
I2C_CH4
5.0V_ST
Composite
Video
IN
Component
(Y,Pb,Pr)
IN
ANT/
CABLE
IN
RGB
IN
HDMI
IN
(x4)
3.3V_TU
I2C_CH6
BACK
TX_SEL
I2C_CH2
DVB
Demodulator
[CE6355]
I2C_CH2
TS
I2C_CH2
I2C_CH4
I2C_CH6
1.8V_1
A/V Audio-1
A/V Audio-2
COMP Audio-1
COMP Audio-2
RGB Audio
ANALOG
AUDIO
INPUT
DIGITAL
AUDIO
INPUT
I2S
S/PDIF
S/PDIF
OUT
FRONT
FE_SIF
HDMI
Transmitter
[SiI9134]
HDMI
DeMUX
[PI3HDMI1210]
RF
Transceiver
[SB9110]
Network
Processor
[SB9120]
HDMI
Receiver
[SiI9125]
HDMI
SiBE
A
M
I/
F
3.3V_L
2.5V_L
1.0V_L
2.5V_L
1.5V_L
1.2V_L
1.0V_L
3.3V_L
1.8V_L
HDMI
SERVICE
only
Wireless TX Module
MEDIA-BOX(AUDIO)
Block Diagram
3.3V_TU
1.8V_TU
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