Read LG 37LD322H (CHASSIS:LD01Z) 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.
82
R3758
+5V_TU
0 . 1 u F
16V
16V
C3726
10uF
10V
10V
OPT
C3731
ISA1530AC1
Q3705
E
B
C
+3.3V_TU
0 . 1 u F
16V
C3708
IF_AGC_MAIN
ISA1530AC1
Q3703
E
B
C
+5V_Normal
TU_SIF
IF_AGC_SEL
0
OPT
R3762
TU_CVBS
0 . 1 u F
16V
C3702
0 . 1 u F
16V
C3704
TUNER_RESET
100K
R3733
BLM18PG121SN1D
L3703
1/10W
1
R3766
2SC3052
OPT
Q3704
E
B
C
1K
OPT
R3750
0 . 1 u F
16V
C3725
+3.3V_TU
BLM18PG121SN1D
L3702
0 . 1 u F
16V
C3729
10K
OPT
R3754
0 . 1 u F
16V
C3710
100pF
50V
50V
C3707
+1.2V/+1.8V_TU
+5V_TU
IF_P_MSTAR
100pF
50V
50V
C3703
0
OPT
R3707
+3.3V_TU
TU_SDA
0 . 1 u F
16V
C3727
+3.3V_Normal
0 . 1 u F
16V
C3717
+3.3V_TU
0 . 1 u F
16V
16V
OPT
C3728
0 . 1 u F
16V
C3724
+5V_TU
+1.2V/+1.8V_TU
+3.3V_TU
0
R3749
CONTROL_ATTEN
IF_N_MSTAR
0 . 1 u F
16V
16V
C3701
TU_SCL
4.7K
R3753
+5V_TU
100
R3732
0
R3760
0
R3761
10uF
10V
10V
C3730
22uF
10V
10V
OPT
C3719
22uF
10V
10V
C3722
22uF
10V
10V
C3723
100pF
50V
50V
C3737
0 . 1 u F
16V
16V
C3738
0
R3704
AZ1117H-ADJTRE1(EH11A)
IC3703
2
OUTPUT
3
INPUT
1
ADJ/GND
1.2K
R3768
10
R3767
1.2K
R3740
1.2K
R3741
33
R3735
33
R3736
18pF
50V
50V
C3711
18pF
50V
50V
C3713
220
R3752
220
R3751
470
R3755
TDTJ-S001D
TU3702
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
S I F
8
NC[IF_TP]
3
+B
16
IF_AGC_CNTL
7
SDA
6
SCL
15
RESET
18
DIF_2
SHIELD
19
100uF
16V
16V
C3705
OPT
150
R3703
OPT
VER 1.0
EU/CHINA CAN TUNER
s h o u l d b e g u a r d e d b y g r o u n d
60mA
FE_AGC_SPEED_CTL
LGIT CAN NIM_H/N TUNER for EU
close to TUNER
close to TUNER
close to TUNER
C l o s e t o t h e t u n e r
200mA
G P I O m u s t b e a d d e d .
1 . s h o u l d b e g u a r d e d b y g r o u n d
2 . N o v i a o n b o t h o f t h e m
3 . S i g n a l W i d t h > = 1 2 m i l s
S i g n a l t o S i g n a l W i d t h = 1 2 m i l s
G r o u n d W i d t h > = 2 4 m i l s
OPTION : RF AGC
c l o s e t o I F l i n e
14
R1
R2
EAX62115503
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