DOWNLOAD LG 32LT670H (CHASSIS:LA2AF) Service Manual ↓ Size: 5.84 MB | Pages: 41 in PDF or view online for FREE

Model
32LT670H (CHASSIS:LA2AF)
Pages
41
Size
5.84 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32lt670h-chassis-la2af.pdf
Date
PREV: LG 32LT660H (CHASSIS:LD2AZ) Service Manual

LG 32LT670H (CHASSIS:LA2AF) Service Manual ▷ View 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.
SPI_SCK
+3.5V_ST
KRC103S
Q1401
OPT
E
B
C
+3.5V_ST
0 . 1 u F
C1401
4.7K
R1404
OPT
/SPI_CS
SPI_SDO
MX25L8006EM2I-12G
IC1401
S_FLASH_MAIN_MACRONIX
3
WP#
2
SO/SIO1
4
GND
1
CS#
5
S I / S I O 0
6
SCLK
7
HOLD#
8
VCC
33
R1405
10K
R1403
OPT
SPI_SDI
/FLASH_WP
0
OPT
R1401
W25Q80BVSSIG
IC1401-*1
S_FLASH_MAIN_WINBOND
3
%WP[IO2]
2
DO[IO1]
4
GND
1
CS
5
D I [ I O 0 ]
6
CLK
7
HOLD[IO3]
8
VCC
+3.5V_ST
SFLASH
20110324
13
GP3_S7LR
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 . 1 u F
16V
C3727
100pF
50V
C3737
IF_AGC_MAIN
AZ1117BH-ADJTRE1
IC3703
HALF_NIM_1.2V_BCD
2
OUTPUT
3
INPUT
1
ADJ/GND
100
R3732
0
R3761
HALF_NIM
0
HALF_NIM_1.8V
R3767-*1
10
R3767
HALF_NIM_1.2V
10uF
6.3V
C3739
OPT
82
R3758
20pF
50V
C3713-*1
TU_I2C_FILTER
18pF
50V
C3711
TU_I2C_NON_FILTER
0 . 1 u F
16V
C3725
0 . 1 u F
16V
C3708
0 . 1 u F
16V
C3717
4.7K
R3753
BUFFER
+3.3V_TU
10uF
10V
C3741
HALF_NIM
+3.3V_TU
100K
R3733
22uF
10V
C3715
TU_SDA
+3.3V_TU
1.2K
R3768
HALF_NIM_1.2V
0
R3760
HALF_NIM
MLG1005SR27JT
R3736-*1
TU_I2C_FILTER
0 . 1 u F
16V
C3710
20pF
50V
C3742
TU_I2C_FILTER
220
R3751
BUFFER
IF_N_MSTAR
ISA1530AC1
Q3705
BUFFER
E
B
C
ISA1530AC1
Q3703
BUFFER
E
B
C
IF_P_MSTAR
33
R3735
TU_I2C_NON_FILTER
100pF
50V
C3707
0
R3749
BUFFER
0 . 1 u F
16V
C3716
TU_CVBS
MLB-201209-0120P-N2
L3703
0 . 1 u F
16V
C3740
HALF_NIM
1K
TU_IIC_NON_ATSC_SANYO
R3740-*1
150
R3703
OPT
0 . 1 u F
16V
C3738
1/10W
1
HALF_NIM
R3766
22uF
10V
C3723
TU_SCL
220
R3752
BUFFER
+3.3V_TU
+1.2V/+1.8V_TU
TUNER_RESET
+1.2V/+1.8V_TU
AP1117EG-13 
HALF_NIM_1.2V_DIODES
I C 3 7 0 3 - * 1
ADJ/GND
OUT
IN
+3.3V_TU
+3.3V_TU
MLG1005SR27JT
R3735-*1
TU_I2C_FILTER
18pF
50V
C3713
TU_I2C_NON_FILTER
20pF
50V
C3711-*1
TU_I2C_FILTER
1K
OPT
R3750
1.2K
R3740
TU_IIC_ATSC_SANYO
470
R3755
BUFFER
0 . 1 u F
16V
C3702
33
R3736
TU_I2C_NON_FILTER
1K
R3741-*1
TU_IIC_NON_ATSC_SANYO
1.2K
R3741
TU_IIC_ATSC_SANYO
+3.3V_TU
TU_SIF
+3.3V_Normal
20pF
50V
C3743
TU_I2C_FILTER
100uF
16V
C3705
OPT
AZ1117BH-1.8TRE1
I C 3 7 0 3 - * 2
HALF_NIM_1.8V
1
ADJ/GND
2
OUT
3
IN
100
R3704
HALF_NIM
0
R3772
NON_BUFFER
0
R3773
NON_BUFFER
0
R3774
+3.3V_BUFFER
0
R3776
+3.3V_BUFFER
TDSS-G101D
SI2176_DVB_1INPUT_H
TU3700
5
+3.3V
11
DIF[N]
2
RESET
10
D I F [ P ]
4
SDA
1
NC
9
IF_AGC
8
CVBS
3
SCL
7
+1.8V
6
S I F
12
SHIELD
TDSS-H101F
TU3700-*1
SI2176_ATSC_1INPUT_H
5
+ B 1 [ 3 . 3 V ]
11
DIF[N]
2
RESET
10
D I F [ P ]
4
SDA
1
NC
9
IF_AGC
8
CVBS
3
SCL
7
+ B 2 [ 1 . 8 V ]
6
S I F
12
SHIELD
TUNER_L
20110511
14
GP3_S7LR
P l e a s e ,   c h e c k   M u l t i   I t e m !   1 0 / 1 2
P4R_GLOBAL_TUNER_BLOCK
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
s h o u l d   b e   g u a r d e d   b y   g r o u n d
a d d , 0 9 2 9
R1
R2
close to TUNER
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
C l o s e   t o   t h e   t u n e r
S i z e   c h a n g e , 0 9 2 9
60mA
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 . 1 u F
50V
C501
0 . 1 u F
50V
C521
1uF
25V
C528
0 . 1 u F
50V
C537
+24V_AMP
0 . 1 u F
50V
C519
+24V_AMP
SPK_L-
0 . 1 u F
16V
C514
390pF
50V
C533
0 . 1 u F
16V
C513
1000pF
50V
C516
AMP_SCL
100
R503
12
R515
+24V_AMP
0 . 1 u F
50V
C540
12
R514
10K
R501
10.0uH
L506
10K
R502
WAFER-ANGLE
P501
1
2
3
4
0 . 4 7 u F
50V
C536
1N4148W
100V
OPT
D504
12
R512
22000pF
50V
C526
0 . 1 u F
50V
C522
SPK_L+
AUD_MASTER_CLK
AMP_RESET
390pF
50V
C530
BLM18PG121SN1D
L502
12
R509
33pF
50V
C507
SPK_L-
10uF
35V
C523
THERMAL
NTP-7400L
IC501
1
AGND_PLL
2
AVDD_PLL
3
DVDD_PLL
4
LF
5
DGND_PLL
6
GND_1
7
DGND
8
DVDD
9
SDATA
10
WCK
11
BCK
12
SDA
13
SCL
14
/FAULT
15
MONITOR0
16
MONITOR1
17
MONITOR2
18
BST2B
19
PGND2B
20
OUT2B_1
21
OUT2B_2
22
PVDD2_1
23
PVDD2_2
24
PVDD2_3
25
OUT2A_1
26
OUT2A_2
27
PGND2A
28
BST2A
29
VDR2
30
GND_2
31
VCC_5
32
VDR1
33
BST1B
34
PGND1B
35
OUT1B_1
36
OUT1B_2
37
PVDD1_1
38
PVDD1_2
39
PVDD1_3
40
OUT1A_1
41
OUT1A_2
42
PGND1A
43
BST1A
44
/RESET
45
AD
46
GND_IO
47
CLK_I
48
VDD_IO
49
[EP]
4.7K
R519
0 . 1 u F
50V
C520
2SC3052
Q501
E
B
C
0 . 4 7 u F
50V
C535
3.3K
R505
10.0uH
L505
1N4148W
100V
OPT
D502
12
R508
1N4148W
100V
OPT
D503
4.7K
R517
10.0uH
L504
12
R511
100
R506
1uF
25V
C529
4.7K
R516
SPK_L+
0 . 1 u F
50V
C502
22000pF
50V
C517
SPK_R-
+24V
0 . 0 1 u F
50V
OPT
C525
22000pF
50V
C518
0 . 1 u F
16V
C512
AUD_LRCK
10uF
10V
OPT
C511
1uF
25V
C534
0 . 1 u F
50V
C538
390pF
50V
C531
10.0uH
L503
1000pF
50V
C505
MLB-201209-0120P-N2
L501
10uF
35V
C524
22000pF
50V
C527
0 . 1 u F
50V
C539
+3.5V_ST
SPK_R+
33pF
50V
C509
AMP_MUTE
100pF
50V
C503
1N4148W
100V
OPT
D501
AMP_SDA
0 . 1 u F
16V
C508
10uF
10V
C515
10uF
10V
OPT
C506
SPK_R+
+3.3V_Normal
390pF
50V
C532
AUD_LRCH
12
R513
AUD_SCK
3 . 3
OPT
R507
SPK_R-
1000pF
50V
C504
10uF
10V
OPT
C510
100
R504
12
R510
4.7K
R518
10K
R520
10K
R521
NTP7400
20110324
16
GP3_S7LR
SPEAKER_L
SPEAKER_R
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