Read LG 42LD320H (CHASSIS:LB0AW) Service Manual online
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
R3758
82
82
+5V_TU
C3726
0.1uF
16V
0.1uF
16V
C3731
10uF
10V
10uF
10V
OPT
Q3705
ISA1530AC1
E
B
C
+3.3V_TU
C3708
0.1uF
16V
16V
IF_AGC_MAIN
Q3703
ISA1530AC1
E
B
C
+5V_Normal
TU_SIF
IF_AGC_SEL
R3762
0
OPT
TU_CVBS
C3702
0.1uF
16V
C3704
0.1uF
16V
16V
TUNER_RESET
R3733
100K
L3703
BLM18PG121SN1D
R3766
1
1
1/10W
Q3704
2SC3052
OPT
E
B
C
R3750
1K
OPT
C3725
0.1uF
16V
16V
+3.3V_TU
L3702
BLM18PG121SN1D
C3729
0.1uF
16V
R3754
10K
10K
OPT
C3710
0.1uF
16V
C3707
100pF
50V
100pF
50V
+1.2V/+1.8V_TU
+5V_TU
IF_P_MSTAR
C3703
100pF
50V
100pF
50V
R3707
0
OPT
+3.3V_TU
TU_SDA
C3727
0.1uF
16V
+3.3V_Normal
C3717
0.1uF
16V
+3.3V_TU
C3728
0.1uF
16V
16V
OPT
C3724
0.1uF
16V
16V
+5V_TU
+1.2V/+1.8V_TU
+3.3V_TU
R3749
0
CONTROL_ATTEN
IF_N_MSTAR
C3701
0.1uF
16V
0.1uF
16V
TU_SCL
R3753
4.7K
4.7K
+5V_TU
R3732
100
100
R3760
0
R3761
0
C3730
10uF
10V
10uF
10V
C3719
22uF
10V
OPT
22uF
10V
OPT
C3722
22uF
10V
22uF
10V
C3723
22uF
10V
22uF
10V
C3737
100pF
50V
100pF
50V
C3738
0.1uF
16V
0.1uF
16V
R3704
0
IC3703
AZ1117H-ADJTRE1(EH11A)
2
OUTPUT
3
INPUT
1
ADJ/GND
R3768
1.2K
1.2K
R3767
10
R3740
1.2K
1.2K
R3741
1.2K
1.2K
R3735
33
R3736
33
C3711
18pF
50V
18pF
50V
C3713
18pF
50V
18pF
50V
R3752
220
R3751
220
R3755
470
TU3702
TDTJ-S001D
TDTJ-S001D
TUNER
14
3.3V
13
1.2V
5
AS
12
GND
11
VIDEO
2
BST_CNTL
10
NC
4
NC[RF_AGC]
1
ANT_PWR[OPT]
17
DIF_1
9
SIF
8
NC[IF_TP]
3
+B
16
IF_AGC_CNTL
7
SDA
6
SCL
15
RESET
18
DIF_2
19
SHIELD
C3705
100uF
16V
16V
OPT
R3703
150
OPT
OPT
VER 1.0
EU/CHINA CAN TUNER
should be guarded by ground
60mA
FE_AGC_SPEED_CTL
LGIT CAN NIM_H/N TUNER for EU
close to TUNER
close to TUNER
close to TUNER
Close to the tuner
200mA
GPIO must be added.
1. should be guarded by ground
2. No via on both of them
3. Signal Width >= 12mils
Signal to Signal Width = 12mils
Ground Width >= 24mils
2. No via on both of them
3. Signal Width >= 12mils
Signal to Signal Width = 12mils
Ground Width >= 24mils
OPTION : RF AGC
close to IF line
14
R1
R2
EAX62115501
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