LG 32LV355C, Service Manual

Page: 29 / 61

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.
0
FULL_NIM_CHINA
R3723
0 R3761
HALF_NIM
1K
OPT
R3750
TU_CVBS
1.2K
R3768
HALF_NIM
100pF
50V
C3737
0
OPT
R3707
FE_TS_CLK
100uF
16V
C3705
FULL_NIM
4.7K
FULL_NIM
R3742
+5V_TU
0 . 1 u F
16V
C3704
0 . 0 1 u F
25V
C3709
BOOSTER_OPT
LNA2_CTL
RF_SWITCH_CTL
18pF
50V
C3711
TU_I2C_NON_FILTER
1/10W
1
HALF_NIM
R3766
+3.3V_TU
1.2K
R3741
TU_IIC_ATSC_SANYO
+5V_Normal
10K
OPT
R3754
0 . 1 u F
16V
C3725
1/10W
0
FULL_NIM
R3764
IF_P_MSTAR
0
FULL_NIM R3722
TUNER_RESET
100
FULL_NIM
R3702
0 R3760
HALF_NIM
10K
R3743
BOOSTER_OPT
220
R3752
4.7K
R3753
2.2K
R3737
BOOSTER_OPT
FE_TS_DATA[0-7]
100pF
50V
C3703
22uF
10V
C3719
150
R3703
OPT
2SC3052
OPT
Q3704
E
B
C
+1.2V/+1.8V_TU
10K
R3745
BOOSTER_OPT
1.2K
R3740
TU_IIC_ATSC_SANYO
0
RF_SW_OPT
R3705
+5V_TU
0
FULL_NIM
R3721
FE_TS_SYNC
33 R3735
TU_I2C_NON_FILTER
+3.3V_TU
SC4215ISTRT
FULL_NIM_SEMTEK
IC3701-*1
3
VIN
2
EN
4
NC_2
1
NC_1
5
NC_3
6
VO
7
ADJ
8
GND
BLM18PG121SN1D
L3701BOOSTER_OPT
18pF
50V
C3713
TU_I2C_NON_FILTER
0
R3704
HALF_NIM
0 . 1 u F
16V
C3724
10K
FULL_NIM_BCD
R3748-*1
0 . 1 u F
16V
C3729
FULL_NIM
+3.3V_Norm
0 . 1 u F
16V
C3726
+3.3V_TU
FULL_NIM_BCD
L3704
33 R3736
TU_I2C_NON_FILTER
22pF
50V
FULL_NIM
C3712
FE_TS_VAL_ERR
0 FULL_NIM
R3731
TU_SIF
0
FULL_NIM_CHINA
R3725
0 . 1 u F
16V
C3710
THERMAL
AP2132MP-2.5TRG1
IC3701
FULL_NIM_BCD
3
VIN
2
EN
4
VCTRL
1
PG
5
NC
6
VOUT
7
ADJ
8
GND
9
[ E P ]
0
FULL_NIM R3730
+5V_TU
10uF
10V
C3730
FULL_NIM
DEMOD_SDA
+3.3V_TU
2SC3052
Q3702
BOOSTER_OPT
E
B
C
0 . 1 u F
16V
C3738
0 . 1 u F
16V
C3717
0
R3734
BOOSTER_OPT
DEMOD_RESET
ISA1530AC1
Q3703
E
B
C
0
FULL_NIM R3728
5.1K
FULL_NIM_SEMTEK
R3748
100
R3732
0 R3749
0 . 1 u F
16V
OPT
C3728
0 . 1 u F 16V
C3702
IF_AGC_MAIN
+1.2V/+1.8V_TU
22uF
10V
C3723
10K
FULL_NIM_BCD
R3769
0
FULL_NIM R3724
10K
FULL_NIM_BCD
R3771
+1.2V/+1.8V_TU
+3.3V_TU
+3.3V_TU
100pF
50V
C3707
IF_N_MSTAR
100K
R3733
4.7K
FULL_NIM
R3744
ISA1530AC1
Q3705
E
B
C
0
FULL_NIM
R3727
10
R3767
HALF_NIM
0
FULL_NIM
R3729
10uF
10V
OPT
C3731
CONTROL_ATTEN
0
FULL_NIM
R3726
ISA1530AC1
Q3701
BOOSTER_OPT
E
B
C
TU_SCL
220
R3751
TDTJ-S001D
DVB_1INPUT_H_LGIT
TU3702
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
+5V_TU
82
R3758
1005
9.1K
FULL_NIM
R3747
0 . 1 u F
16V
C3727
0 . 1 u F
16V
C3701
10K
FULL_NIM_SEMTEK
R3770
TU_SDA
22pF
50V
FULL_NIM
C3714
470
R3755
+5V_TU
DEMOD_SCL
0
OPT
R3762
0 . 1 u F
16V
C3708
100
FULL_NIM
R3701
IF_AGC_SEL
0 . 1 u F
16V
C3706
AZ1117BH-ADJTRE1
IC3703
HALF_NIM_1.2V_BCD
2
OUTPUT
3
INPUT
1
ADJ/GND
0
FULL_NIM_BR
R3706
UDA55AL
TU3702-*3
GP3_ATSC_1INPUT_H_SANYO
14
+3.3V
13
+1.2V
5
AS
12
GND
11
VIDEO
2
NC_2
10
NC_3
4
NC[RF_AGC]
1
NC_1
17
DIF_1
9
S I F
8
NC(IF_TP)
3
+B[+5V]
16
IF_AGC_CNTL
7
SDA
6
SCL
15
RESET
18
DIF_2
SHIELD
19
TDFR-B036F
TU3701-*2
FULL_NIM_BR
1 RF_S/W_CNTL
2
BST_CNTL
3
+B1[5V]
4
NC_1[RF_AGC]
5
NC_2
6 SCLT
7
SDAT
8
NC_3
9
S I F
10
NC_4
11 VIDEO
12
GND
13
+ B 2 [ 1 . 2 V ]
14
+ B 3 [ 3 . 3 V ]
15
RESET
16
NC_5
17
SCL
18
SDA
19
ERR
20
SYNC
21
VALID
22
MCL
23 D0
24
D1
25
D2
26
D3
27
D4
28 D5
29
D6
30
D7
31
SHIELD
22uF
16V
C3722
22uF
10V
C3715
10uF
6.3V
C3739
CN
10uF
10V
C3741
HALF_NIM
0 . 1 u F
16V
C3740
HALF_NIM
TDFR-C236D
TU3701-*4
CN_2INPUT_H_ALTO
1
RF_S/W_CNTL
2
BST_CNTL
3
+B1[+5V]
4
NC[RF_AGC]
5
NC_1
6
SCLT
7
SDAT
8
NC_2
9
S I F
10
NC_3
11
VIDEO
12
GND
13
+ B 2 [ 1 . 2 V ]
14
+ B 3 [ 3 . 3 V ]
15
RESET
16
NC_4
17
SCL
18
SDA
19
ERR
20
SYNC
21
VALID
22
MCL
23
D0
24
D1
25
D2
26
D3
27
D4
28
D5
29
D6
30
D7
31
SHIELD
TDFR-C036D
CN_2INPUT_H_LG3911
TU3701
1
RF_S/W_CNTL
2
BST_CNTL
3
+B1[+5V]
4
NC[RF_AGC]
5
NC_1
6
SCLT
7
SDAT
8
NC_2
9
S I F
10
NC_3
11
VIDEO
12
GND
13
+ B 2 [ 1 . 2 V ]
14
+ B 3 [ 3 . 3 V ]
15
RESET
16
NC_4
17
SCL
18
SDA
19
ERR
20
SYNC
21
VALID
22
MCL
23
D0
24
D1
25
D2
26
D3
27
D4
28
D5
29
D6
30
D7
31
SHIELD
MLB-201209-0120P-N2
L3703
MLB-201209-0120P-N2
L3702
AP1117EG-13
I C 3 7 0 3 - * 1
HALF_NIM_1.2V_DIODES
ADJ/GND
OUT IN
1K
R3741-*1
TU_IIC_NON_ATSC_SANYO
1K
R3740-*1
TU_IIC_NON_ATSC_SANYO
20pF
50V
C3742
TU_I2C_FILTER
20pF
50V
C3743
TU_I2C_FILTER
TDTJ-S101D
TU3702-*4
GP2R_AU_1INPUT_H_LGIT
14
+ B 3 [ 3 . 3 V ]
13
+ B 2 [ 1 . 2 V ]
5
MOPLL_AS
12
GND
11
VIDEO
2
NC_1
10
NC_3
4
RF_AGC
1
ANT_PWR
17
DIF_1[N]
9
S I F
8
NC_2
3
+B1[5V]
16
IF_AGC
7
SDA
6
SCL
15
RESET
18
D I F _ 2 [ P ]
SHIELD
19
COIL
R3735-*1
TU_I2C_FILTER
COIL
R3736-*1
TU_I2C_FILTER
20pF
50V
C3713-*1
TU_I2C_FILTER
20pF
50V
C3711-*1
TU_I2C_FILTER
TDTR-T036F
NTSC_2INPUT_H_LGIT
TU3702-*2
14
+ B 3 [ 3 . 3 V ]
13
+ B 2 [ 1 . 2 V ]
5
NC_2
12
GND
11
VIDEO
2
BST_CTL
10
NC_4
4
NC_1[RF_AGC]
1
RF_S/W_CTL
17
DIF_1[N]
9
S I F
8
NC_3
3
+B1[5V]
16
IF/AGC
7
SDAT
6
SCLT
15
RESET
18
D I F _ 2 [ P ]
SHIELD
19
TDVJ-H101F
TU3702-*1
GP3_ATSC_1INPUT_H_LGIT
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
+5V_TUNER
FE_TS_DATA[3]
FE_TS_DATA[1]
FE_TS_DATA[5]
FE_TS_DATA[7]
FE_TS_DATA[2]
FE_TS_DATA[4]
FE_TS_DATA[6]
FE_TS_DATA[0]
R2
R2
FE_AGC_SPEED_CTL
C l o s e t o t h e t u n e r
GP2R_LARGE_TUNER
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
close to TUNER
BOOSTER : CHINA OPT
close to TUNER
R1
Vo=0.8*(1+R1/R2)
200mA
OPTION : RF AGC
FE_BOOSTER_CTL
T h e p u l l - u p / d o w n o f L N A 2 _ C T L
is depended on MODLE_OPT_1.
GPIO must be added for FE_BOOSTER_CTL
TUNER MULTI-OPTION
R1
380mA
s h o u l d b e g u a r d e d b y g r o u n d
G P I O m u s t b e a d d e d .
close to TUNER
60mA
T h i s w a s b e i n g a p p l i e d t o t h e o n l y c h i n a d e m o d ,
s o t h i s h a s t o b e d e l e t e d i n b o t h m a i n a n d I S D B s h e e
C l o s e t o t h e C I S l o t
c l o s e t o I F l i n e
P u l l - u p c a n ’ t b e a p p l i e d
because of MODEL_OPT_2
l o c a t i o n m o v e m e n t , 0 9 2 9
Add,0929
c l o s e t o t h e t u n e r p i n , a d d , 0 9 0 2 9
S i z e c h a n g e S i z e c h a n g e
P l e a s e , c h e c k m u l t i I t e m ! 1 0 / 1 2
TUNER_L
20101023
14
GP2R
Copyright © 2011 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only