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Speaker System
LAS350B
Service manual
Display/ Key/ Usb Circuit Diagram - LG LAS350B Service Manual
2.1 ch sound bar
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Also See for LAS350B
:
Owner's manual
(29 pages)
,
Simple manual
(4 pages)
,
Manual
(4 pages)
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Contents
Table of Contents
Troubleshooting
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Table of Contents
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5. DISPLAY/ KEY/ USB CIRCUIT DIAGRAM
12
CON301
1
5V
2
LED
3
IR
4
3.3V
5
SDA
11
6
SCL
7
GND
CN/7PIN
10
FRONT_BOARD
9
8
CON303
1
KEY
2
KEY
3
GND
4
7
GND
KEY_BOARD
6
5
4
CON502
P_R
P_L
P_DET
P_GND
SPDIF
3
GND
5V
D+
D-
GND
2
1
A
B
C
D
FGND
C305
100NF
5V
STB_LED
IR
DISPLAY_3.3V
100R
R312
DISPLAY_SDA
100R
R313
DISPLAY_SCL
D301
D302
FGND
NC
NC
STBY-->H
STB_LED
FGND
FGND
DISPLAY_3.3V
C306
10UF
FGND
R306
R307
R308
100R
680R
1K
C311
100NF
9
8
L501
600RH
4
L502
600RH
5
L503
600RH
7
6
L504
600RH
1 2 3
R317
D503
0R
1
KDS226
C316
R316 NC
10NF
2
C504
R318
3
100R
100R
1 OUT
4
2 GND
5
L505
600RH
3 VCC
6
R503
L508
0R
7
600RH
C505
C317
C506
10PF
100PF
100NF
8
L506
0R
R504
9
L507
0R
0R
10
JK503
USB
4
4:GND
3
3:D+
2:D-
2
1
1:VCC
C507
L509
10UF
D501
D502
NC
NC
C508
NC
E
F
G
H
DISPLAY_3.3V
REM
HM338-10B
R305
47K
R302
R303
15
4.7K
100R
14
16
LED2
RED LED
EC301
FGND
R304
100uF/16V
C304
100R
C302
10UF
C301
100PF
R301
Q301
100NF
8050
10K
FGND
FGND
FGND
FGND
FGND
5V
D300
KDS226
C310
10UF
FGND
R309
EC302
1.5K
100uF/16V
R
L
JK504
R501
0R
L510
JK502
1
3
1
SW+
2
SW+
4
3
2
SW-
4
SW-
22UH
5
GND
R502
CON302
0R
TP6
1KRH
C312
103P
I
J
K
L
3-37
3-38
LED301
LED_ATA7216AW-P12
DISPLAY
C313
100NF
FGND
FGND
IC301
SM1616
FGND
DISPLAY_SCL
DISPLAY_SDA
C314
C315
330PF
330PF
FGND
FGND
2 SPK-
1 SPK+
JK301
: WAVEFORM NUMBER
M
N
O
P
Q
R
S
T
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Chapters
Section 1 General
3
Section 2 Cabinet & Main Chassis
8
Section 3 Electrical
14
Table of Contents
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