LG 22LG3000 / 22LG3010 (CHASSIS:LD84A) Service Manual ▷ View online
BLOCK DIAGRAM
1. Main Board
5V
Power
3.3V,2.5V,1.8V,1.2V,1.1V
IR
Headphone
Audio AMP
TDA8932BTW
12V
MT5380GKU
MPEG-1 layer I/II decoding
Audio ADC
Audio DAC
3D surround processing with
Virtual surround
Automatic volume control
Audio I/F
2-D Graphic
De-interlace
VADCx4
HDMI In I/F
Digital TV Demodulator
Analog TV IF Demodulator
TV audio demodulator
Audio ADC
Audio DAC
3D surround processing with
Virtual surround
Automatic volume control
Audio I/F
2-D Graphic
De-interlace
VADCx4
HDMI In I/F
Digital TV Demodulator
Analog TV IF Demodulator
TV audio demodulator
3.3V,2.5V,1.2V,1.1V
Power
Board
16
Common Interface Controller
MT8295
3.3V,1.8V
PCMCIA
5V,3.3V
D-SUB/PC-VGA
SCART
HDMI 1
HDMI 2
HDMI MUX
TMDS251PAGR
5V,3.3V
Audio R/L of CVBS
Audio R/L of PC
YPbPr/L/R
S-Video
Keypad
Channel
demodulator
MT5133
3.3V
TUNER
DVB-T
FQD1116ME
5V
FLASH MEMORY
MX25L3205DMI-12G
MX25L3205DMI-12G
3.3V
Flash MX25L3205DMI-12G
DDR SDRAM
HY5DU121622DTP-D4
3
3
2.5V
SPIDF OUT
2.5V
2.5V
EARPHONE AMP
2. Power Board
- 29 -
EXPLODED VIEW
010
020
030
040
050
060
070
080
090
100
250
240
11
0
120
260
150
140
130
160
170
180
190
210
220
200
270
230
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts are identified by in the Schematic Diagram and EXPLODED VIEW.
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
parts are identified by in the Schematic Diagram and EXPLODED VIEW.
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
IMPORTANT SAFETY NOTICE
PANEL
POWER
BOARD
BOARD
ＥＢＵ５７４０６１０１
MAIN BOARD
ＥＢＵ５７４０５８０１
SPEAKER
KEY BOARD
IR BOARD
ＣＯＶ３００５５５０１
ＣＯＶ３００５３５０１
LVDS CABLE
ＣＯＶ３００５４６０１
(Keypad & IR Wire)WIRE
ＣＯＶ３００５４８０１
ＥＢＵ５７４１０６０１
ＥＢＵ５７４０６３０１
SPEAKER WIRE
ＣＯＶ３００５５００１
Wiring diagram
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