LG 55LW9800-DA (CHASSIS:LT12D) Service Manual ▷ View online
Main PCB for Broadband
Main + TCON all in one
To PSU
To T-CON
BOARD
1
2
3
4
1
Main processor, DDR Memory
Flash Memory
Flash Memory
2
3
4
Micom for Key/IR sensing
HDMI switch (4:1)
Audio AMP (10W+10W)
XXLW9500
XXLV5500
wifi (W/O LV5500)
Soft touch +IR
RF assy
(W/O LV5500)
Front Spk
Woofer Spk (W/O LV5500)
To T-CON
BOARD
(W/ LV5500)
L/R In
SPDIF OUT
NAND
Flash(8Gb)
CVBS
USB
Audio
AMP
I2S Out
BCM
35230
35230
CVBS(M)
ISDB-T
Demod
Demod
DIF(+/-)
WIFI
USB1
USB2
USB2
COMP1
A/V1
RS-232C
PC-RGB
PC-AUDIO
OPTIC
LAN
SYSTEM
DDR3
X 16 X 2
(2Gb)
Audio
AMP
LVDS.
41P
HDMI1
HDMI2
HDMI3
HDMI4
HDMI4
Side
Rear
COMP
RGB,H/V
Ethernet
CVBS
CAM,
DVR
Ready
DVR
Ready
H/P
L/R Out
UART
SYSTEM EEPROM X 1
(1Mb)
HDMI
S/W
(HDCP
EEPROM)
M-Remote
Module
I2C
Sub Micom
(sanyo)
Wireless Ready
I2C
USB
HUB IC
Air/
ISDB-T
ISDB-T
TUNER
(T/C)
TUNER
(T/C)
Cable
ANALOG
DEMOD
51P
HDMI
HUB IC
BCM35230 Block Diagram
S/W
Jack Interface
[VI_SC_R1],[VI_SC_G1],[VI_SC_B1]
BCM35230
[COMP1_DET]
[COMP1_Y]
[COMP1_Pb]
[COMP1_Pr]
DSUB_R / G / B
PC L,R
EDID EEPROM
AT24C02BN-10SU-1.8
RGB DET
[DSUB_R+/G+/B+]
DSUB_ V / HSYNC
[DSUB_V/H SYNC]
[DSUB_DET] // GPIO
[EDID_WP]
MICOM
[RGB_DDC_SCL]
[RGB_DDC_SDA]
RGB_DDC_SCL
RGB_DDC_SDA
[PC_L_IN]
[PC_R_IN]
[SPDIF_OUT]
SPDIF
R
L
CVBS
AV DET
[AV1_R_IN]
[AV1_L_IN]
[AV1_CVBS_IN]
[AV1_CVBS_DET]
COMP_Y
COMP_PB
COMP_PR
COMP DET
COMP1
R
L
CVBS
AV DET
[AV1_R_IN]
[AV1_L_IN]
[AV1_CVBS_IN]
[AV1_CVBS_DET]
AV1
AV2
COMP2 OPT
COMP2_R/G/B
0 OH
M
[BSC_S_SCL]
[BSC_S_SDA]
Appendix. Block Diagram for Edge/ALEF Backlight
[ All in one main PCB for
XXLW9500,
ALEF LED Backlight]
LED BLU control
LED BLU control
SPI/Vsync
FRC-II
(LG1121)
Main SoC
(BCM)
FHD@60Hz
Dual-Link LVDS
2
3D_Sync
2D-3D
(LGSIC)
XTR T-Con
(LGSIC)
FHD@240Hz
Quad-Link
HF mini-LVDS
8
FHD@60Hz
Dual-Link LVDS
2
4
FHD@240Hz
Octa-Link LVDS
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