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.
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.
1K
R1614
5.6V
OPT
D1611
SC1_CVBS_IN
SC1_G+/COMP1_Y+
0 . 1 u F
50V
EU_OPT
C1625
470K
OPT
R1662
5.6V
REAR_AV
D1626
+3.3V_Normal
10K
EU_OPT
R1667
10K
R1685
REAR_AV
0 . 1 u F
50V
50V
EU_OPT
C1642
SN324
I C 1 6 0 1 - * 1
OP_AMP_AUK
3
NON_INV_IN1
2
INV_IN1
4
VCC
1
OUT1
6
INV_IN2
5
NON_INV_IN2
7
OUT2
8
OUT3
9
INV_IN3
10
NON_INV_IN3
11
GND
12
NON_INV_IN4
13
INV_IN4
14
OUT4
47K
EU_OPT
R1641
0 . 1 u F
16V
16V
C1607
5.6V
D1624
OPT
ISA1530AC1
EU_OPT
Q1601
E
B
C
2SC3052
EU_OPT
Q1607
P P J 2 3 3 - 0 1
JK1604
REAR_AV
4A
[YL]O-SPRING
5A
[YL]E-LUG
3A
[YL]CONTACT
4B
[WH]C-LUG
5C
[RD]E-LUG
4C
[RD]O-SPRING
3C
[RD]CONTACT
5.6V
OPT
D1607
1K
R1666
REAR_AV
DTV/MNT_L_OUT
10K
R1660
REAR_AV
10K
R1652
EU_OPT
120-ohm
L1609
REAR_AV
0 . 1 u F
16V
16V
C1646
REAR_AV
10K
R1618
75
EU_OPT
R1609
470
EU_OPT
R1640
10K
R1617
30V
REAR_AV
D1619
30V
D1604
330pF
50V
C1612
120-ohm
L1604
330pF
50V
50V
C1611
SC1/COMP1_L_IN
SC1_FB
SC1_ID
PSC008-01
EU_OPT
JK1602
1
AUDIO_R_OUT
2
AUDIO_R_IN
3
AUDIO_L_OUT
4
AUDIO_GND
5
B_GND
6
AUDIO_L_IN
7
B_OUT
8
ID
9
G_GND
10
D2B_IN
11
G_OUT
12
D2B_OUT
13
R_GND
14
RGB_GND
15
R_OUT
16
RGB_IO
17
SYNC_GND1
18
SYNC_GND2
19
SYNC_OUT
20
SYNC_IN
21
COM_GND
22
AV_DET
330pF
50V
C1663
REAR_AV
47uF
16V
16V
EU_OPT
C1621
DTV/MNT_VOUT
33K
EU_OPT
R1664
5.6V
OPT
OPT
D1601
AS324MTR-E1
OP_AMP_BCD
IC1601
3
IN1+
2
I N 1 -
4
VCC
1
OUT1
6
I N 2 -
5
IN2+
7
OUT2
8
OUT3
9
I N 3 -
10
IN3+
11
GND
12
IN4+
13
I N 4 -
14
OUT4
2SC3052
EU_OPT
Q1602
E
B
C
5.6V
REAR_AV
D1625
BLM18PG121SN1D
EU_OPT
L1601
DTV/MNT_L_OUT
SC1/COMP1_R_IN
5.6V
OPT
D1609
75
R1604
4700pF
EU_OPT
C1618
220pF
50V
50V
OPT
C1648
AV_CVBS_DET
22
EU_OPT
R1627
75
EU_OPT
R1616
BLM18PG121SN1D
EU_OPT
L1602
SCART1_Rout
15K
EU_OPT
R1623
10uF
16V
16V
EU_OPT
C1645
SC1_B+/COMP1_Pb+
AV_R_IN
10K
EU_OPT
R1668
SC1/COMP1_DET
SC1_R+/COMP1_Pr+
30V
D1605
0 . 1 u F
EU_OPT
C1636
75
R1605
+3.3V_Normal
5.6V
OPT
OPT
D1608
390
EU_OPT
R1635
DTV/MNT_R_OUT
10K
R1613
DTV/MNT_R_OUT
390
R4211
EU_OPT
330pF
50V
50V
C1662
REAR_AV
12K
R1689
REAR_AV
1000pF
50V
50V
EU_OPT
C1610
30V
OPT
D1618
SC1_SOG_IN
EU_OPT
L1606
10uF
16V
16V
EU_OPT
C1644
DTV/MNT_L_OUT
0
EU_OPT
R4221
2K
EU_OPT
R1648
2SC3052
EU_OPT
Q1608
AV_L_IN
30V
D1606
12K
R1631
RT1P141C-T112
EU_OPT
Q1610
1
2
3
75
EU_OPT
R1628
30V
OPT
D1610
180
EU_OPT
R1639
470K
R1606
+3.5V_ST
220pF
50V
50V
OPT
C1608
120-ohm
L1603
470K
R1607
+12V/+15V
+12V/+15V
120-ohm
L1610
REAR_AV
0 . 1 u F
50V
EU_OPT
C1623
AV_CVBS_IN
30V
OPT
D1603
SCART1_Lout
33K
EU_OPT
R1665
3.9K
EU_OPT
R1629
12K
R1630
100uF
16V
16V
EU_OPT
C1620
30V
OPT
D1602
470K
R1672
REAR_AV
2.2K
EU_OPT
R1656
15K
EU_OPT
R1642
12K
R1688
REAR_AV
4700pF
EU_OPT
C1619
2.2K
EU_OPT
R1655
5.6K
EU_OPT
R1657
470K
OPT
R1661
5.6K
EU_OPT
R1658
SCART1_MUTE
10K
R1684
REAR_AV
75
R1608
47pF
50V
50V
EU_OPT
C1604
33pF
EU_OPT
C1654
470K
R1671
REAR_AV
DTV/MNT_R_OUT
33pF
EU_OPT
C1655
47pF
50V
50V
C1643
REAR_AV
75
R1654
REAR_AV
1000pF
50V
50V
EU_OPT
C1609
0
EU_OPT
R4210
2K
EU_OPT
R1650
0
R4216
0
R4219
330pF
C1664
330pF
C1665
220K
R4218
220K
R4217
5.6K
EXT_SPK
R18
33pF
EXT_SPK
C10
1uF
50V
EXT_SPK
C13
EXT_R_AMP_IN
5.6K
EXT_SPK
R19
2.2K
EXT_SPK
R17
EXT_L_AMP
33pF
EXT_SPK
C11
470K
EXT_SPK
R14
10K
EXT_SPK
R11
100
R22
22K
R20
0 . 0 1 u F
C14
2.2K
EXT_SPK
R16
100
R23
22K
R21
0 . 0 1 u F
C15
10K
EXT_SPK
R12
33K
EXT_SPK
R13
EXT_R_AMP
33K
EXT_SPK
R10
470K
EXT_SPK
R15
EXT_L_AMP_IN
1uF
50V
EXT_SPK
C12
REAR_JACK
20110324
17
GP3_S7LR
[SCART AUDIO MUTE]
Gain=1+Rf/Rg
F u l l S c a r t
Rg
IN CASE OF SMALL= 15V
Rear AV
CLOSE TO MSTAR
Rf
L-MONO
CLOSE TO MSTAR
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.
47uF
25V
25V
C1803
MJ-657PT-8-SD
JK1800
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10K
R1801
+12V/+15V
1uF
25V
25V
OPT
C1801
0.01uF
C1806
5.1V
ZD1803
5.1V
ZD1802
3.9K
R1811
0.01uF
C1804
3.9K
R1812
AO3407A
Q1800
G
D
S
MLB-201209-0120P-N2
L1800
5.1V
ZD1804
3.9K
R1809
0.01uF
C1807
510
R1804
2 . 2 u F
16V
C1800
510
R1805
10K
R1802
10K
R1800
0.01uF
C1805
3.9K
R1810
510
R1806
5.1V
ZD1801
510
R1807
39pF
OPT
OPT
C1813
39pF
OPT
OPT
C1812
EXT_OUT_R
3:AF9
P E J 0 2 7 - 0 4
JK1801
EXT_SPK
6B
T_TERMINAL2
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
EXT_OUT_L
3:AF8
EXT_SPK_DET
+3.3V_Normal
51K
R1827
EXT_SPK
100
R1828
EXT_SPK
4.7K
R1836
EXT_SPK
0 . 1 u F
16V
16V
C1837
EXT_SPK
EXT_OUT_L
17:Y27
THERMAL
TS4962
IC1800
EXT_SPK
3
IN+
2
NC
4
I N -
1
STBY
5
OUT+
6
VCC
7
GND
8
OUT-
9
[EP]GND
0
R1843
EXT_SPK
15
R1838
EXT_SPK
PNP
Q1801
EXT_SPK
E
B
C
1.5K
R1839
EXT_SPK
15
R1837
EXT_SPK
EXT_R_AMP_IN
11:U22
15pF
50V
50V
C1833
EXT_SPK
0
R1842
EXT_SPK
EXT_L_AMP_IN
11:U22
15pF
50V
C1834
EXT_SPK
1.5K
R1840
EXT_SPK
1uF
C1835
EXT_SPK
24K
OPT
R1841
1uF
C1836
EXT_SPK
EXT_OUT_R
17:Y26
+12V/+15V
330
R1830
R1830
EXT_SPK
10uF
10V
10V
C1832
EXT_SPK
+5V_SUB_AMP
0 . 1 u F
50V
50V
C1830
EXT_SPK
0 . 1 u F
16V
16V
OPT
C1831
110
R1831
EXT_SPK
AP1117EG-13
IC1801
EXT_SPK
ADJ/GND
OUT
IN
1
5%
R1832
EXT_SPK
BLM18PG121SN1D
L1801
EXT_SPK
+5V_SUB_AMP
1uF
16V
16V
C1839
EXT_SPK
0 . 1 u F
C1838
EXT_SPK
+5V_Normal
4.7K
R1834
EXT_SPK
SUB_AMP_MUTE
4 : C 1 4
10K
R1833
EXT_SPK
47K
R1835
EXT_SPK
RJP_CTRL0
RJP_CTRL1
RJP_CTRL2
RJP_CTRL3
SIDE_JACK
20110324
18
GP3_S7LR
RJP
SPEAKER OUT JACK
C470 Close to LDO
EXT_SPEAKER_AMP
12V==>5V AMP POWER
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.
0 . 1 u F
16V
16V
C1907
+5V_Normal
BLM18PG121SN1D
L1902
CI_MCLKI
0 . 1 u F
16V
16V
C1912
OPT
/CI_CD2
4 . 7 u F
16V
16V
C1911
0 . 1 u F
16V
16V
C1913
47
R1919
10K
R1904
RSR025P03
Q1902
S
D
G
CI_TS_DATA[2]
+5V_CI_ON
/CI_CD1
/PCM_IRQA
/CI_CD1
PCM_A[0]
PCM_A[12]
0 . 1 u F
16V
16V
C1904
CI_WE
CI_MDI[0]
/PCM_IOWR
CI_ADDR[9]
CI_TS_DATA[4]
CI_WE
10067972-000LF
EAG41860102
P1901
CI_SLOT_JACK
G1
G2
57
21
52
16
10
47
41
5
36
59
23
45
54
18
49
43
13
7
38
2
25
56
20
51
15
9
46
40
4
35
58
22
53
17
11
48
42
12
6
37
1
24
55
19
50
44
14
8
39
3
26
60
27
61
28
62
29
63
30
64
31
32
33
34
65
66
67
68
69
CI_IOWR
2SC3052
Q1901
E
B
C
10K
R1924
10uF
10V
10V
C1906
+3.3V_CI
PCM_A[6]
FE_TS_DATA[0-7]
REG
33
AR1907
47
R1901
10K
R1906
0
OPT
R1916
33
AR1912
PCM_A[9]
BLM18PG121SN1D
L1901
0.1uF
16V
C1910
0
OPT
R1909
CI_ADDR[0]
CI_TS_DATA[1]
CI_DET
10K
OPT
R1923
CI_ADDR[4]
CI_MDI[6]
CI_DET
GND
33
AR1903
33
AR1913
CI_TS_DATA[6]
10K
R1917
PCM_RST
10K
R1913
100
R1908
PCM_A[1]
CI_ADDR[2]
/PCM_CD
CI_MDI[5]
PCM_5V_CTL
PCM_A[7]
33
AR1908
CI_OE
+3.3V_CI
CI_ADDR[8]
GND
CI_OE
CI_TS_CLK
0 . 1 u F
C1909
CI_ADDR[7]
CI_IORD
CI_DATA[0-7]
CI_ADDR[1]
CI_MDI[3]
PCM_A[11]
CI_ADDR[6]
10067972-050LF
P1902
G1
G2
57
21
52
16
10
47
41
5
36
59
23
45
54
18
49
43
13
7
38
2
25
56
20
51
15
9
46
40
4
35
58
22
53
17
11
48
42
12
6
37
1
24
55
19
50
44
14
8
39
3
26
60
27
61
28
62
29
63
30
64
31
32
33
34
65
66
67
68
69
0.1uF
C1901
OPT
CI_ADDR[12]
/CI_CD2
FE_TS_SYNC
CI_ADDR[14]
CI_MDI[5]
CI_IORD
74LVC1G32GW
IC1901
CI_SLOT_OR_GATE_NXP
3
GND
2
A
4
Y
1
B
5
VCC
CI_ADDR[3]
CI_TS_VAL
PCM_A[14]
CI_ADDR[11]
/PCM_WAIT
CI_TS_SYNC
0.1uF
C1902
33
AR1909
CI_IOWR
0.1uF
16V
C1908
OPT
47
R1902
REG
CI_MDI[7]
CI_ADDR[13]
GND
/PCM_OE
CI_MDI[3]
CI_MDI[4]
PCM_A[4]
2.2K
R1922
TOSHIBA
TC74LCX244FT
0ITO742440D
IC1902
3
2Y4
2
1A1
4
1A2
1
1OE
6
1A3
5
2Y3
7
2Y2
8
1A4
9
2Y1
10
GND
11
2A1
12
1Y4
13
2A2
14
1Y3
15
2A3
16
1Y2
17
2A4
18
1Y1
19
2OE
20
VCC
/PCM_REG
CI_MDI[2]
+5V_Normal
CI_MDI[0]
CI_MCLKI
CI_MIVAL_ERR
33
AR1904
0
OPT
R1910
PCM_A[5]
/PCM_CE
22K
R1914
CI_MDI[7]
PCM_A[2]
CI_MISTRT
33
AR1905
47
R1915
/PCM_WE
CI_MDI[4]
10K
R1903
+3.3V_CI
100
R1920
10K
R1912
OPT
PCM_A[10]
+5V_Normal
FE_TS_VAL_ERR
CI_DATA[0-7]
33
AR1906
CI_ADDR[5]
CI_TS_DATA[7]
CI_ADDR[10]
GND
/PCM_IORD
47
R1918
33
AR1901
CI_TS_DATA[3]
+5V_CI_ON
100
R1907
CI_TS_DATA[5]
CI_MDI[1]
CI_TS_DATA[0]
CI_MDI[2]
FE_TS_CLK
PCM_A[8]
PCM_D[0-7]
0 . 1 u F
16V
16V
C1903
PCM_A[3]
0 . 1 u F
C1905
GND
CI_MIVAL_ERR
+3.3V_CI
CI_MISTRT
10K
R1905
CI_MDI[1]
CI_ADDR[0-14]
CI_MDI[6]
+3.3V_Normal
10K
R1921
PCM_A[13]
GND
33
R1925
33
R1926
33
R1927
12pF
50V
50V
C1914
CI_DATA[6]
CI_ADDR[11]
CI_ADDR[14]
CI_ADDR[6]
CI_DATA[0]
FE_TS_DATA[0]
FE_TS_DATA[3]
FE_TS_DATA[7]
CI_DATA[2]
CI_ADDR[10]
CI_DATA[0-7]
CI_ADDR[0]
CI_ADDR[13]
CI_DATA[0-7]
CI_DATA[0-7]
CI_ADDR[5]
FE_TS_DATA[4]
FE_TS_DATA[2]
PCM_D[7]
FE_TS_DATA[6]
CI_DATA[7]
CI_DATA[2]
CI_DATA[7]
CI_DATA[3]
CI_ADDR[2]
CI_ADDR[1]
CI_ADDR[9]
FE_TS_DATA[5]
PCM_D[1]
CI_DATA[1]
CI_ADDR[3]
CI_DATA[1]
PCM_D[0-7]
CI_DATA[4]
CI_ADDR[4]
PCM_D[3]
PCM_D[6]
CI_ADDR[12]
PCM_D[4]
PCM_D[0]
PCM_D[2]
CI_DATA[0]
CI_DATA[4]
PCM_D[5]
CI_DATA[5]
CI_DATA[5]
CI_DATA[6]
CI_ADDR[7]
FE_TS_DATA[1]
CI_DATA[3]
CI_ADDR[8]
PCMCI
20110324
20
GP3_S7LR
CI TS INPUT
CI SLOT
CI HOST I/F
CI DETECT
* O p t i o n n a m e o f t h i s p a g e : C I _ S L O T
C I R e g i o n
( b e c a u s e o f H o n g K o n g )
CI POWER ENABLE CONTROL
CLOSE TO MSTAR
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.
MDL61930001
6.5T_GAS5
GAS5
MDL61930001
GAS3
6.5T_GAS3
MDL61930001
6.5T_GAS6
GAS6
MDL61930001
6.5T_GAS2
GAS2
MDL61930001
6.5T_GAS1
GAS1
MDL61930001
6.5T_GAS7
GAS7
MDL61930001
6.5T_GAS4
GAS4
SMD_GAS
20110324
20
GP3_S7LR
SMD GASKET
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