DOWNLOAD LG 55LV770S (CHASSIS:LD12D) Service Manual ↓ Size: 14.21 MB | Pages: 86 in PDF or view online for FREE

Model
55LV770S (CHASSIS:LD12D)
Pages
86
Size
14.21 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
55lv770s-chassis-ld12d.pdf
Date
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LG 55LV770S (CHASSIS:LD12D) Service Manual ▷ View online

Main PCB for Smart TV
Main Board without T-con b’d
To PSU
To T-CON 
Board
1
2
3
4
1
Main processor, DDR Memory
Flash Memory
2
3
4
Micom for Key/IR sensing 
HDMI switch (4:1)
Audio AMP (10W+10W)
XXLW950T/W/G/S-ZA
XXLW770T/W/G/S-ZA
wifi
Soft touch +IR
Motion assy
Front Spk
Woofer  Spk
Tuner type can be changed by the model name.
2
1
0/T/W 
model
G/S
model
LNB IC 
Only G/S model
1
2
L/R In
SPDIF OUT
NAND
Flash(8Gb)
CVBS
CVBS
USB
Audio
AMP
I2S Out
BCM
35230
CI slot
CI slot
P_TS
CVBS(M)
P_TS
DVB-
T/C 
Demod
DIF(+/-)
USB1
USB2
COMP1
A/V2
SCART
RS-232C
PC-RGB
PC-AUDIO
OPTIC
LAN
SYSTEM
DDR3
X 16 X 2
(2Gb)
Audio
AMP
(Woofer)
LVDS.
HDMI1
HDMI2
HDMI3
HDMI4
Side
Bottom
side
COMP
RGB,H/V
Ethernet
CVBS
H/P
L/R Out
UART
SYSTEM EEPROM X 1
(1Mb)
HDMI
S/W
(HDCP
EEPROM)
M-Remote Module
(built in)
I2C
Sub Micom
(sanyo)
RGB In/CVBS In Out
Wireless Ready
I2C
USB
HUB IC
Air/
Cable
TUNER
(T/C)
TUNER
(S2)
DIGITAL
DEMOD
(T/C)
DVB-
S
ANALOG
DEMOD
DIGITAL
DEMOD
(S2)
TS_S/P
LNB
51P
HDMI
HUB IC
BCM35230 Block Diagram (SGLW95/77, LV55/57))
USB hub (only LW950X)
DVR ready
Only LW950X
A/V1
Rear
T-con
(FRCII)
Mini
LVDS
WiFi
(built in)
Only LW950X/770X
Only LW950X/770X
Appendix. Block Diagram for Edge/ALEF Backlight
[ All in one main PCB for 
XXLW950T/W/S/G,XXLW770T/W/S/G
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
Active Type Display
RF Emitter
Vsync
RF
 co
mm
- V
syn
c
- F
orm
at 
info
* For more information about 3D system, refer to the page 1 ~6
Interconnection - 2
XXLW770T/W/S/G-ZA
1
Main PCB
2
LED driver
3
4
RF MOTION ASSY
5
IR Key PCB
6
T-CON ASSY 
1
2
3
4
5
Main / PSU cable 
Main / Module LVDS cable 51PIN 
LED driver / PSU
T-CON to Module 80pin FFC
Multi-cable:
IR+MOTION +SPK
WOOFER SPK CABLE
[PCBs]
[Cables]
PSU 
Local dimming cable 8pin
7
6
7
1
2
2
3
4
6
Control key 
5
7
1
2
3
4
4
5
6
7
7
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