LG 37LD340H / 37LD345H (CHASSIS:LA06G) 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.
0
R1502
CDS3C05HDMI1
5.6V
D1501
USB DOWN STREAM
KJA-UB-4-0004
JK1450
1
2
3
4
5
MLB-201209-0120P-N2
120-ohm
L1451
SIDE_USB_DP
SIDE_USB_DM
0
R1501
TP1451
CDS3C05HDMI1
5.6V
5.6V
D1500
/RST_HUB
22uF
10V
10V
C1500
AP2191SG-13
IC1500
3
IN_2
2
IN_1
4
EN
1
GND
5
FLG
6
OUT_1
7
OUT_2
8
NC
10uF
10V
10V
C1501
+5V_USB
0 . 1 u F
C1502
4.7K
OPT
R1504
+3.3V_Normal
0
R1505
USB1_CTL
10K
R1503
47
R1500
USB1_OCD
TP1452
/RST_PHY
10uF
C1510
MPI
DUM_SPI_DIN
016:Q6
DUM_MPI_DOUT
016:AG12
+5V_ST
IR_IN_MODEM
016:AN14
DUM_MPI_DIN
0 1 6 : A I 9
DUM_SPI_DOUT
016:Q5
+12V_C
DUM_SPI_CLOCK
016:Q6
SMW200-11
P1500
MPI
1
12V
2
GND
3
BUFFERED_MPI
4
MPI_DOUT
5
SPI_DATA_OUT
6
SPI_DATA_IN
7
SPI_CLOCK
8
GND
9
VCC
10
IR_IN_MODEM
11
GAME CONT
MLB-201209-0120P-N2
L1500
MPI
GND
0
R1525 MPI
0
R1522 MPI
0
5%
1/16W
R1514
MPI
0
R1523
MPI
0
R1526 MPI
0
R1524 MPI
SIGN6409
USB_DIODES
$ 0 . 0 7 7
14
MPI
37LD320H
USB/MPI
2 0 1 0 . 1 2 . 2 2
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.
MBRA340T3G
D1600
+12V_C
MBRA340T3G
D1601
+12V_ST
+12V/+15V
+5V_ST
1K
R1606
1K
R1620
+3.5V_ST
22uF
25V
C1608
DC_DC_EN
016:N17
10uF
25V
25V
C1603
Si4800BDY
Q1600
3
S3
2
S2
4
G
1
S1
5
D5
6
D6
7
D7
8
D8
30K
1%
R1613
2 . 2 u F
10V
C1600
15K
1%
R1617
0
R1608
0 . 1 u F
C1602
MBRA340T3G
40V
D1602
100K
1%
R1612
100pF
50V
50V
C1607
BD9306AFVM
IC1601
3
ENB
2
CT
4
GD
1
RT
5
VCC
6
GND
7
COMP
8
FB
+12V_ST
20K
R1609
100pF
50V
C1606
2 . 2 u F
10V
10V
C1601
POWER_ON/OFF2_2
100K
R1760
b_SPI_CLOCK
011:AD12
10uF
16V
C1619
JP1611
100K
R1759
OPT
MISO_0
b_SPI_DOUT
011:X12
POWER_ON/OFF2_1
0 0 4 : I 1 2 ; 0 0 4 : X 5
0
R1752
BLAN
UART_SWB
010:O21
b_MPI_DIN
011:X5
b_MPI_DOUT
011:X7
MISO_0
1uF
C1616
100
R1761
0 . 1 u F
C1627
BLAN
LED_B/LG_LOGO
006:M26
2SC3875S(ALY)
Q1606
BLAN
E
B
C
470
R1727 OPT
LD502
BAT54C
D1604
A2
C
A1
0 . 0 1 u F
C1630
KEY2
006:R25
470
R1725
330
R1721
RL_ON
004:A26
2SC3875S(ALY)
Q1608
BLAN
E
B
C
UART3_RX
+5V_ST
100K
R1739
LED_R/BUZZ
006:M26
UART3_TX
0 1 0 : E 2 5 ; 0 1 0 : E 1 6 ; 0 1 6 : N 1 5 ; 0 1 6 : Y 2 5
0 . 1 u F
50V
C1622
+5V_ST
BAT54C
D1603
A2
C
A1
UART_SWA
010:O12
IR
002:Q4;006:L22
2SC3875S(ALY)
Q1609
E
B
C
POWER_DET
004:AN28;038:S14
0.1uF
C1611
POWER_ON/OFF1
004:X20
SAM2333
LD501
A2[RD]
C
A1[GN]
MISO_1
UART3_RX
0 1 0 : K 2 3 ; 0 1 0 : N 1 4 ; 0 1 6 : N 1 4 ; 0 1 6 : Y 2 5
4.7K
R1746
470
R1703
SIDEAV_DET
0 0 1 : A J 2 6 ; 0 1 0 : T 7
b_SPI_DIN
011:X13
+5V_ST
JP1613
2SC3875S(ALY)
Q1607
E
B
C
4.7K
R1753
BLAN
L1602
2SC3875S(ALY)
Q1602
E
B
C
bLAN_POWER_MANAGE
011:AD20;011:AF24
0 . 1 u F
C1621
YFDW254-14S
P1601
PTC_JIG
1
2
3
4
5
6
7
8
9
10
11
12
13
14
100
R1744
BLAN
470
R1726
KEY1
006:R25
bLAN_IR_IN_MODEM
011:M17
UART3_RX
2SC3875S(ALY)
Q1611
E
B
C
MISO_1
2SC3875S(ALY)
Q1610
BLAN
E
B
C
UART3_TX
0 . 4 7 u F
C1620
2SA1504S
Q1603
E
B
C
DC_DC_EN
0 1 6 : I 3
20pF
C1610
OPT
470
R1704
LD503
100K
R1738
0.1uF
C1613
PTC_RX_5V
010:K23;010:R22
32.768KHz
X1600
PTC_CRYSTAL_TXC
JP1612
0.1uF
C1612
UART3_TX
0 1 0 : E 2 5 ; 0 1 0 : E 1 6 ; 0 1 6 : Y 2 5 ; 0 1 6 : A A 3
AMP_MUTE
SUB_MUTE
0 OPT
R6102
FM24C16A
IC1608
A t y p e
3
NC_3
2
NC_2
4
VSS
1
NC_1
5
SDA
6
SCL
7
WP
8
VDD
10K
R6104
0
R6106
R6106
0 . 1 u F
C6100
4.7K
R6105
0 . 1 u F
C6101
10K
R6103
0
OPT
R6121
0
OPT
R6120
INV_CTL
OPC_EN
007:J12;007:T18
1K
R1690
1K
R1687
4.7K
OPT
R1762
4.7K
OPT
R1763
4.7K
OPT
R1765
4.7K
OPT
R1764
SOC_RESET
4.7K
OPT
R1643
4.7K
OPT
R1644
4.7K
R1747
BLAN
4.7K
R1751
BLAN
4.7K
OPT
R1660
4.7K
Only_32"Hos.Power
R1661
100
R1756
BLAN
100
R1757
BLAN
100
R1758
BLAN
100
R1649
100
R1650
100
R1742
BLAN
100
R1741
BLAN
SKHMPWE010
SW501
1
2
4
3
5
2SC3875S(ALY)
Q1615
E
B
C
RESET_high
0 1 0 : E 2 3
100
R1604
Update_SW
0 1 0 : E 1 5
SKHMPWE010
SW502
1
2
4
3
5
THERMAL
SC632ULTRT
IC1600
3
C1-
2
C1+
4
IN
1
GND
5
EN
6
OUT
7
C2+
8
C2-
9
[EP]GND
MSP430F5419IPZR
IC1602
I C _ m i c r o c o n t r o l l e r
1
P 6 . 4 / A 4
2
P 6 . 5 / A 5
3
P 6 . 6 / A 6
4
P 6 . 7 / A 7
5
P 7 . 4 / A 1 2
6
P 7 . 5 / A 1 3
7
P 7 . 6 / A 1 4
8
P 7 . 7 / A 1 5
9
P5.0/VREF+/VEREF+
10
P5.1/VREF-/VEREF-
11
AVCC
12
AVSS
13
P 7 . 0 / X I N
14
P7.1/XOUT
15
DVSS
16
DVCC
17
P1.0/TA0CLK/ACLK
18
P 1 . 1 / T A 0 . 0
19
P 1 . 2 / T A 0 . 1
20
P 1 . 3 / T A 0 . 2
21
P 1 . 4 / T A 0 . 3
22
P 1 . 5 / T A 0 . 4
23
P1.6/SMCLK
24
P 1 . 7
25
P2.0/TA1CLK/MCLK
26
P2.1/TA1.0
27
P2.2/TA1.1
28
P2.3/TA1.2
29
P2.4/RTCCLK
30
P2.5
31
P2.6/ACLK
32
P2.7/ADC12CLK/DMAE0
33
P3.0/UCB0STE/UCA0CLK
34
P3.1/UCB0SIMO/UCB0SDA
35
P3.2/UCB0SOMI/UCB0SCL
36
P3.3/UCB0CLK/UCA0STE
37
DVSS3
38
DVCC3
39
P3.4/UCA0TXD/UCA0SIMO
40
P3.5/UCA0RXD/UCA0SOMI
41
P3.6/UCB1STE/UCA1CLK
42
P3.7/UCB1SIMO/UCB1SDA
43
P4.0/TB0
44
P4.1/TB1
45
P4.2/TB2
46
P4.3/TB3
47
P4.4/TB4
48
P4.5/TB5
49
P4.6/TB6
50
P4.7/TBCLK/SMCLK
51
P5.4/UCB1SOMI/UCB1SCL
52
P5.5/UCB1CLK/UCA1STE
53
P5.6/UCA1TXD/UCA1SIMO
54
P5.7/UCA1RXD/UCA1SOMI
55
P7.2/TBOUTH/SVMOUT
56
P 7 . 3 / T A 1 . 2
57
P 8 . 0 / T A 0 . 0
58
P 8 . 1 / T A 0 . 1
59
P 8 . 2 / T A 0 . 2
60
P 8 . 3 / T A 0 . 3
61
P 8 . 4 / T A 0 . 4
62
VCORE
63
DVSS2
64
DVCC2
65
P 8 . 5 / T A 1 . 0
66
P 8 . 6 / T A 1 . 1
67
P 8 . 7
68
P9.0/UCB2STE/UCA2CLK
69
P9.1/UCB2SIMO/UCB2SDA
70
P9.2/UCB2SOMI/UCB2SCL
71
P9.3/UCB2CLK/UCA2STE
72
P9.4/UCA2TXD/UCA2SIMO
73
P9.5/UCA2RXDUCA2SOMI
74
P 9 . 6
75
P 9 . 7
76
P10.0/UCB3STE/UCA3CLK
77
P10.1/UCB3SIMO/UCB3SDA
78
P10.2/UCB3SOMI/UCB3SCL
79
P10.3/UCB3CLK/UCA3STE
80
P10.4/UCA3TXD/UCA3SIMO
81
P10.5/UCA3RXDUCA3SOMI
82
P10.6
83
P10.7
84
P11.0/ACLK
85
P11.1/MCLK
86
P11.2/SMCLK
87
DVCC4
88
DVSS4
89
P5.2/XT2IN
90
P5.3/XT2OUT
91
TEST/SBWTCK
92
PJ.0/TDO
93
PJ.1/TDI/TCLK
94
PJ.2/TMS
95
PJ.3/TCK
96
RST/NMI/SBWTDIO
97
P6.0/A0
98
P6.1/A1
99
P6.2/A2
100
P6.3/A3
TXS0104EDR
IC1607
3
A2
2
A1
4
A3
1
VCCA
6
NC_1
5
A4
7
GND
8
OE
9
NC_2
10
B4
11
B3
12
B2
13
B1
14
VCCB
TXS0104EDR
IC1606
BLAN
3
A2
2
A1
4
A3
1
VCCA
6
NC_1
5
A4
7
GND
8
OE
9
NC_2
10
B4
11
B3
12
B2
13
B1
14
VCCB
4.7K
R1627
4.7K
R1635
3.6V
ZD1600
3.6V
ZD1601
47K
R1625
4.7K
R1623
4.7K
R1601
4.7K
R1621
4.7K
R1618
2N3906S-RTK
Q1612
E
B
C
4.7K
R1619
4.7K
R1615
47K
R1616
10K
R1614
AMP_RESET
038:H20
PANEL_CTL
PTC_TX
010:E24
IR_IN_MODEM
014:W14
L1604
OPT
+5V_ST
L1603
OPT
1K
R1678
OPT
P E J 0 2 7 - 0 1
JK501
Sn
6B
T_TERMINAL2
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
47uF
10V
10V
C1690
OPT
47uF
10V
10V
C1691
OPT
4.7K
R1653
MPI
0 . 1 u F
C1617
MPI
DUM_SPI_DIN
014:W16
0 . 1 u F
C1615
MPI
+5V_ST
DUM_SPI_DOUT
014:W17
DUM_SPI_CLOCK
014:W16
TXS0104EDR
IC1603
MPI
3
A2
2
A1
4
A3
1
VCCA
6
NC_1
5
A4
7
GND
8
OE
9
NC_2
10
B4
11
B3
12
B2
13
B1
14
VCCB
DUM_MPI_DOUT
014:W17
2SC3875S(ALY)
Q1604
E
B
C
2SC3875S(ALY)
Q1605
E
B
C
DUM_MPI_DIN
014:W18
+5V_ST
+5V_ST
100
R1669
MPI
100
R1675
MPI
100
R1673
MPI
100
R1642
MPI
100
R1641
MPI
100
R1640
MPI
0
R1716
100
R1712
100
R1711
100
R1754
BLAN
100
R1733
BLAN
0
R6101
0
R6100
0
R1684
0
R1689
0
R1698
0
R1697
0
R1694
330
R1681
330
R1680
3
3
0
R1607
330 R1701
330 R1702
0
R1728
BLAN
10K
R1776
OPT
10K
R1750
10K
R1755
10K
R1745
10K
R1731
BLAN
10K
R1748
10K
R1778
OPT
10K
R1777
0
R1718
0
R1717
4.7K
R1740
BLAN
470K
R1737
BLAN
47pF
50V
50V
C1628
BLAN
47pF
50V
50V
C1626
BLAN
0 . 1 u F
C1629
BLAN
47pF
50V
50V
C1623
47pF
50V
50V
C1625
0
R1636
0
R1638
0
R1626
0
R1695
0
R1688
0
R1691
0
R1685
100
R1637
100
R1651
100
R1634
100
R1624
100
R1639
100
R1677
100
R1657
100
R1659
100
R1658
0
R1663
0
R1676
0
R1672
0
R1670
100K
R1664
1K
R1734
4.7K
R1699
0
R1719
10
R1705
4.7K
R1700
330
R1707
4.7K
R1730
4.7K
R1723
100
R1729
100
R1732
470K
R1735
10K
R1724
0
R1720
4.7K
R1736
+3.3V_Normal
2SC3875S(ALY)
Q1619
RJP
E
B
C
RJP_CTRL0
0 0 6 : A I 2 3
RJP_CTRL3
0 0 6 : A I 2 2
RJP_CTRL0_buffer 016:N13
4.7K
R1662
RJP
+3.3V_Normal
2SC3875S(ALY)
Q1624
RJP
E
B
C
+3.3V_Normal
10K
R1654
RJP
10K
R1671
RJP
1K
R1648
RJP
2SC3875S(ALY)
Q1622
RJP
E
B
C
4.7K
R1666
RJP
2SC3875S(ALY)
Q1620
RJP
E
B
C
+3.3V_Normal
+3.3V_Normal
RJP_CTRL2_buffer 016:N13
RJP_CTRL1
0 0 6 : A I 2 3
10K
R1656
RJP
4.7K
R1665
RJP
10K
R1667
RJP
1K
R1683
RJP
4.7K
R1709
RJP
RJP_CTRL4
0 0 6 : A I 2 1
10K
R1668
RJP
2SC3875S(ALY)
Q1623
RJP
E
B
C
2SC3875S(ALY)
Q1616
RJP
E
B
C
10K
R1706
RJP
RJP_CTRL3_buffer 016:N12
2SC3875S(ALY)
Q1621
RJP
E
B
C
10K
R1722
RJP
1K
R1682
RJP
2SC3875S(ALY)
Q1625
RJP
E
B
C
+3.3V_Normal
RJP_CTRL1_buffer
016:N13
RJP_CTRL2
0 0 6 : A I 2 2
10K
R1708
RJP
1K
R1645
RJP
4.7K
R1710
RJP
+3.3V_Normal
+3.3V_Normal
2SC3875S(ALY)
Q1618
RJP
E
B
C
+3.3V_Normal
2SC3875S(ALY)
Q1617
RJP
E
B
C
10K
R1655
RJP
+3.3V_Normal
10K
R1715
RJP
1K
R1652
RJP
RJP_CTRL4_buffer 016:N12
RJP_CTRL0_buffer
0 1 6 : E 2 0
0 R1632
RJP
RJP_CTRL1_buffer
016:H19
0 R1631
RJP
RJP_CTRL2_buffer
016:H16
0 R1630
RJP
0 R1629
RJP
RJP_CTRL3_buffer
0 1 6 : E 1 7
0 R1628
RJP
RJP_CTRL4_buffer
0 1 6 : E 1 4
47K
R1633
RJP
47K
R1646
RJP
47K
R1679
RJP
47K
R1647
RJP
47K
R1674
RJP
2200pF
C1618
27pF
C1609
PTC_CRYSTAL_TXC
+3.5V_ST
+3.5V_ST_PTC
BLM18PG121SN1D
L1605
+3.5V_ST_PTC
+3.5V_ST_PTC
+3.5V_ST_PTC
+3.5V_ST_PTC
+3.5V_ST_PTC
+3.5V_ST_PTC
+3.5V_ST_PTC
+5V_ST
+3.5V_ST_PTC
+3.5V_ST_PTC
+3.5V_ST_PTC
+3.5V_ST_PTC
+3.5V_ST_PTC
+3.5V_ST_PTC
+3.5V_ST_PTC
+3.5V_ST_PTC
+3.5V_ST_PTC
+3.5V_ST_PTC
+3.5V_ST_PTC
+3.5V_ST_PTC
+3.5V_ST_PTC
+3.5V_ST_PTC
+3.5V_ST_PTC
+3.5V_ST_PTC
+3.5V_ST_PTC
+3.5V_ST_PTC
+3.5V_ST_PTC
+3.5V_ST_PTC
RJ12_MPI_DIN
0 1 1 : F 1 3
0
RJ12_MPI
R1781
0
RJ12_MPI
R1782
RJ12_MPI_DOUT
0 1 1 : F 1 2
0
RJ12_MPI
R1783
RJ12_IR_MPI_MODEM
0 1 1 : F 1 1
22uH
L1601
32.768KHz
X1600-*1
PTC_CRYSTAL_EPSON
P E J 0 2 7 - 0 4
JK501-*1
Au
6B
T_TERMINAL2
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
FM24C16B
IC1608-*1
B t y p e
3
NC_3
2
NC_2
4
VSS
1
NC_1
5
SDA
6
SCL
7
WP
8
VDD
UART SW CONTROL B
UART SW CONTROL A
PTC_RESET
PTC_UPDATE
16
37LD320H
PTC
2 0 1 0 . 1 2 . 2 2
12V power
PTC 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.
SPI_SCK
/FLASH_WP
0
R1301
0
OPT
R1300
/SPI_CS
4.7K
R1303
0 . 1 u F
C1200
+3.3V_Normal
+3.3V_Normal
KRC103S
Q1300
E
B
C
+3.3V_Normal
10K
R1302
33
R1304
SPI_SDO
SPI_SDI
MX25L8005M2I-15G
IC200
3
WP#
2
SO
4
GND
1
CS#
5
S I
6
SCLK
7
HOLD#
8
VCC
MX25L8006EM2I-12G
IC200-*1
3
WP#
2
SO/SIO1
4
GND
1
CS#
5
S I / S I O 0
6
SCLK
7
HOLD#
8
VCC
23
37LD320H
S - f l a s h
2 0 1 0 . 1 2 . 2 2
Click on the first or last page to see other 37LD340H / 37LD345H (CHASSIS:LA06G) service manuals if exist.