LG 42LD490 (CHASSIS:LD03B) Service Manual ▷ View online
U
S
B
D
O
W
N
S
T
R
E
A
M
THERMAL
U
S
B
D
O
W
N
S
T
R
E
A
M
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.
USB
C2205
0.1uF
SCL2_3.3V
USB_DP2
+3.3V_USB
USB_DM2
+3.3V_USB
C2201
1uF
10V
1uF
10V
C2211
0.1uF
C2209
1uF
10V
USB_DP1
C2215
0.1uF
OPT
D2204
5.6V
CDS3C05HDMI1
R2212
100K OPT
C2214
4.7uF
4.7uF
R2206
100K
C2203
0.1uF
R2208
0
OPT
R2202
1M
1M
1%
C2207
0.1uF
R2205
100K
+3.3V_USB
R2213
100K OPT
/RST_HUB
C2204
0.1uF
SIDE_USB_DP
C2202
0.1uF
P2202
KJA-UB-4-0004
1
2
3
4
5
USB_DP2
+3.3V_USB
R2209
100K
100K
OPT
R2210
100K
USB_DM1
/USB_OCD2
C2206
1uF
10V
/USB_OCD1
C2212
0.1uF
R2207
0
OPT
R2204
100K
D2202
5.6V
CDS3C05HDMI1
R2214
0
0
/USB_OCD1
USB_CTL1
USB_DM1
+3.3V_USB
+3.3V_NORMAL
R2203
100K
SDA2_3.3V
SIDE_USB_DM
L2201
BLM18PG121SN1D
D2203
5.6V
CDS3C05HDMI1
C2213
0.1uF
USB_CTL2
D2201
5.6V
CDS3C05HDMI1
R2211
100K OPT
USB_DP1
USB_DM2
USB_CTL1
R2201
12K
1/10W
1%
IC2201
USB2512A_AEZG
1
USBDN1_DM
3
USBDN2_DM
7
NC_2
9
NC_4
10
VDDA33_2
11
TEST
12
PRTPWR1
13
OCS1_N
14
VDD18
15
VDD33CR
16
PRTPWR2
17
OCS2_N
18
NC_5
19
NC_6
20
NC_7
21
NC_8
22
SDA/SMBDATA/NON_REM1
23
VDD33
24
SCL/SMBCLK/CFG_SEL0
25
HS_IND/CFG_SEL1
26
RESET_N
27
VBUS_DET
28
SUSP_IND/LOCAL_PWR/NON_REM0
29
VDDA33_3
30
USBUP_DM
31
USBUP_DP
32
XTAL2
5
VDDA33_1
8
NC_3
6
NC_1
4
USBDN2_DP
2
USBDN1_DP
33
XTAL1/CLKIN
34
VDD18PLL
35
RBIAS
36
VDD33PLL
37
VSS
X2201
24MHz
24MHz
C2208 15pF C2210 15pF
C2218
100uF
16V
C2222
0.1uF
IC2202
AP2191SG-13
EAN60921001
3
IN_2
2
IN_1
4
EN
1
GND
5
FLG
6
OUT_1
7
OUT_2
8
NC
+5V_USB
R2226
2.7K
2.7K
R2225
0
R2220
4.7K
OPT
4.7K
OPT
+3.3V_NORMAL
C2220
10uF
10V
10uF
10V
L2202
MLB-201209-0120P-N2
120-ohm
P2201
KJA-UB-4-0004
1
2
3
4
5
R2227
0
R2223
2.7K
2.7K
C2223
0.1uF
R2221
4.7K
OPT
4.7K
OPT
L2203
MLB-201209-0120P-N2
120-ohm
IC2203
AP2191SG-13
EAN60921001
3
IN_2
2
IN_1
4
EN
1
GND
5
FLG
6
OUT_1
7
OUT_2
8
NC
C2221
10uF
10V
10uF
10V
+5V_USB
C2219
100uF
16V
+3.3V_NORMAL
/USB_OCD2
040:J6
USB_CTL2
USB2 OPTION
USB / DVR Ready
USB
40
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.
2009.06.18
EUROBBTV
SC_RE1
2SC3052
Q4107
EU
Q4104
ISA1530AC1
EU
E
B
C
R4127
15K
15K
EU
SCART1_Lout_N
DTV/MNT_R_OUT
R4133
390
390
EU
D4101
30V
OPT
C4120
0.1uF
16V
0.1uF
16V
EU
+3.3V_NORMAL
R4160
0
EU
R4130
3.9K
3.9K
EU
R4149
33K
33K
EU
R4132
390
390
EU
R4152
4.7K
EU
D4112
30V
EU
Q4110
2SC3052
2SC3052
EU
E
B
C
R4154
1K
EU
SCART1_Rout_P
SCART1_MUTE
SC_RE2
C4123
10uF
16V
EU
D4103
30V
OPT
SC1_G
Q4105
2SC3052
2SC3052
EU
E
B
C
D4107
5.6V
OPT
R4137
15K
15K
EU
D4106
30V
OPT
SC1_B
R4143
5.6K
EU
SCART1_Rout_N
DTV/MNT_R_OUT
041:F3;041:G2
R4139
68K
68K
OPT
Q4111
2SC3052
2SC3052
EU
E
B
C
R4159
12K
EU
D4110
30V
OPT
SC1_R_IN
002:C6
C4114
100uF
16V
EU
R4157
0
EU
+12V
R4136
47K
47K
EU
Q4109
RT1P141C-T112
EU
1
2
3
R4148
5.6K
EU
D4109
5.6V
OPT
SC1_CVBS_IN
DTV/MNT_L_OUT
D4100
5.6V
OPT
R4156
10K
10K
EU
SCART1_Lout_P
D4108
5.6V
OPT
R4153
2K
1/16W
EU
C4127
33pF
33pF
EU
C4130
0.1uF
EU
SC1_R
R4150
33K
33K
EU
L4105
EU
R4147
5.6K
EU
+12V
C4128
33pF
EU
REC_8
R4144
5.6K
EU
DTV/MNT_L_OUT
041:F4;041:G2
Q4108
2SC3052
2SC3052
EU
E
B
C
REC_8
R4135
470
EU
+12V
D4102
5.6V
OPT
R4151
2K
1/16W
EU
D4111
30V
OPT
DTV/MNT_R_OUT
D4105
5.6V
OPT
R4138
0
EU
DTV/MNT_L_OUT
C4124
10uF
16V
EU
R4128
0
EU
C4117
47uF
16V
47uF
16V
EU
SC1_L_IN
2SC3052
Q4106
EU
+12V
JK4100
PSC008-01
EU
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
SC1_ID
SC1_FB
R4155
1K
EU
D4104
30V
OPT
C4107
4700pF
50V
4700pF
50V
EU
C4108
4700pF
50V
4700pF
50V
EU
L4100
BLM18PG121SN1D
EU
L4101
BLM18PG121SN1D
EU
C4100
1000pF
50V
1000pF
50V
EU
C4101
1000pF
50V
1000pF
50V
EU
C4113
47pF
50V
47pF
50V
EU
IC4100
LM324D
LM324D
3
3
2
2
4
4
1
1
6
6
5
5
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
DTV/MNT_V_OUT
SCART1_DET
JK4101
PPJ-230-01
CN
9
[GN]G
10
[GN]GND
8
[GN]C_DET
7
[BL]B
6
[RD]R
5
[WH]L_IN
4
[RD]R_IN
11
FIX-TER
13
[RD]MONO
R6166
0
CN
C4125
6800pF
50V
6800pF
50V
EU
C4126
6800pF
50V
EU
R4126
10K
R4129
1K
0
R4123
EU
R4112
75
75
EU
R4104
75
75
1%
R4102
75
1%
1%
R4101
75
75
1%
R4100
470K
R4103
470K
R4107
0
0
1/16W
5%
5%
EU
R4105
0
0
1/16W
5%
5%
EU
R4108
0
R4122
22
EU
R4111
75
1%
75
1%
EU
C4115
220pF
50V
OPT
220pF
50V
OPT
C4116
0.1uF
16V
0.1uF
16V
C4119
0.1uF
0.1uF
16V
EU
C4118
0.1uF
0.1uF
16V
EU
R4131
0
OPT
R4145
1K
1K
EU
R4146
1K
1K
EU
ATV_OUT
IC4101
NLASB3157DFT2G
EU
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
DTV_ATV_SELECT
R4163
10K
EU
+5V_NORMAL
R4134
180
EU
12
R4164
EU
R4115
62
62
EU
C4134
0.1uF
0.1uF
16V
EU
C4105
1uF
25V
R4116
0
0
C4112
100pF
50V
100pF
50V
C4111
100pF
50V
100pF
50V
R4113
0
0
C4104
1uF
25V
R4168
0
EU
C4138
1uF
1uF
10V
C4137
1uF
1uF
10V
Q4117
2SC3052
E
B
C
SIDE_HP_MUTE
R4171
OPT
R4169
OPT
C4139
1uF
10V
1uF
10V
R4174
0
0
OPT
C4141
2.2uF
10V
2.2uF
10V
C4144
2.2uF
10V
C4140
10uF
10V
10V
+3.3V_NORMAL
R4170
4.7K
R4109
4.7K
4.7K
L4104
BG2012B080TF
C4136
1uF
10V
R4175
1K
1K
C4142
0.1uF
16V
R4172
OPT
100K
IC4102
TPA6132A2
TPA6132A2
EAN60724701
3
INR+
2
INL+
4
INR-
1
INL-
5
OUTR
6
G0
7
G1
8
HPVSS
9
CPN
10
PGND
11
CPP
12
HPVDD
13
EN
14
VDD
15
SGND
16
OUTL
R300
4.7K
L4102
10uH
+3.3V_NORMAL
C4135
1uF
10V
1uF
10V
C4143
2.2uF
10V
2.2uF
10V
L4103
BG2012B080TF
HP_ROUT
HP_LOUT
HP_LOUT_P
HP_LOUT_N
HP_ROUT_P
HP_ROUT_N
R4176
10K EU
10K EU
R4177
10K EU
10K EU
R4178
75
1%
C4121
33pF
OPT
R4173
0
0
1/16W
R4119
0
0
1/16W
C4145
0.22uF
16V
0.22uF
16V
C4146
0.22uF
16V
0.22uF
16V
C4122
33pF
OPT
R4140
68K
68K
OPT
R4141
68K
68K
OPT
R4142
68K
68K
OPT
41
ETC SUB BOARD I/F
[SCART2 PIN 8]
Gain=1+Rf/Rg
Rg
Rf
EU_SCART [OPT]
Audio Out Amp
EU_SCART [OPT]
For Frequency Response
Selece = High ==> A = B1
Selece = Low ==> A = B0
EARPHONE BLOCK
Close to the IC
EARPHONE AMP
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.
Bluetooth
P1895
12507WR-10L
BCM BT MODULE
1
2
3
4
5
6
7
8
9
10
11
+3.3V_NORMAL
R1896
27
27
BCM BT MODULE
R1897
27
27
BCM BT MODULE
R1898
0
0
BCM BT MODULE
VREG_CTRL
BT_RESET
R1899
0
0
BCM BT MODULE
BT_DP
BT_DM
D1898
5.6V
CDS3C05HDMI1
BCM BT MODULE
D1899
5.6V
CDS3C05HDMI1
BCM BT MODULE
R1889
10
BCM BT MODULE
Q1801
RTR030P02
BCM BT MODULE
S
D
G
Q1800
2SC3052
BCM BT MODULE
E
B
C
BT_ON/OFF
R1887
47K
BCM BT MODULER1886
47K
BCM BT MODULE
R1888
4.7K
BCM BT MODULE
L1899
500
OPT
C1108
1uF
BCM BT MODULE
C1899
22uF
10V
10V
BCM BT MODULE
BLUETOOTH FOR BCM
43
BLUETOOTH
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.
CI
2009.06.18
CI_D[3]
CI_A[4]
FE_TS_DATA[4]
FE_TS_DATA[5]
FE_TS_DATA[6]
NAND_DATA[3]
NAND_DATA[6]
CI_A[10]
CI_A[0]
CI_A[11]
CI_A[9]
CI_A[5]
NAND_DATA[7]
CI_OUTDATA[0]
CI_D[3]
FE_TS_DATA[2]
CI_A[9]
CI_D[1]
CI_OUTDATA[6]
CI_OUTDATA[5]
CI_OUTDATA[1]
CI_D[4]
FE_TS_DATA[0]
CI_A[12]
NAND_DATA[5]
CI_A[8]
NAND_DATA[0]
CI_A[10]
FE_TS_DATA[7]
CI_A[8]
CI_A[3]
CI_A[7]
CI_A[0]
CI_A[13]
CI_A[2]
CI_D[7]
CI_A[1]
CI_D[7]
CI_D[6]
CI_A[14]
CI_A[4]
CI_D[4]
CI_D[2]
CI_A[2]
CI_A[11]
CI_OUTSTART
FE_TS_DATA[3]
CI_D[0]
CI_D[5]
CI_D[1]
CI_A[13]
FE_TS_DATA[1]
CI_A[7]
CI_A[3]
CI_D[2]
CI_A[5]
NAND_DATA[4]
CI_OUTDATA[3]
CI_OUTDATA[2]
NAND_DATA[2]
CI_D[0]
CI_A[6]
NAND_DATA[1]
CI_A[6]
CI_A[1]
CI_A[12]
CI_OUTVALID
CI_OUTDATA[4]
CI_OUTDATA[7]
CI_D[6]
CI_D[5]
CI_OUTCLK
CI_OUTCLK
NAND_WEb
007:C2;007:E5
AR4517
10K
10K
AR4515
10K
10K
IC4500
MC74LCX541DTR2G
3
D1
2
D0
4
D2
1
OE1
6
D4
5
D3
7
D5
8
D6
9
D7
10
GND
11
O7
12
O6
13
O5
14
O4
15
O3
16
O2
17
O1
18
O0
19
OE2
20
VCC
/CI_IREQ
/CI_WE
016:H12
AR4511
33
/CI_WE
/CI_IOIS16
[GP41]
016:AJ3
AR4501
10K
10K
D3.3V
CI_A[0-13]
007:E7;016:C13
R4520
10K
NAND_DATA[0-7]
C4501
0.1uF
16V
/CI_IOWR
016:T12
FE_TS_DATA[0-7]
Q4501
RSR025P03
S
D
G
R4517
10K
R4501
47
IC4501
74LVC245A
3
A1
2
A0
4
A2
1
DIR
6
A4
5
A3
7
A5
8
A6
9
A7
10
GND
11
B7
12
B6
13
B5
14
B4
15
B3
16
B2
17
B1
18
B0
19
OE
20
VCC
AR4520
33
R4524
10K
OPT
C4503
0.1uF
/CI_WAIT
CI_MOD_RESET [GP49]
007:G6;016:AJ2
Q4500
2SC3052
2SC3052
E
B
C
AR4518
33
C4506
0.1uF
16V
16V
CI_A[0-14]
+5V_NORMAL
R4525
10K
/CI_CD2
007:H5;016:AJ2
[GP38]
AR4502
33
AR4514
33
/CI_CE1
/CI_VS1
/CI_OE
016:G13
R4511
47
CI_MOD_RESET
EBI_CS
007:E7;007:E6;016:K26
/CI_CD1
CI_D[0-7]
016:AG22
AR4516
33
/CI_OE
FE_TS_DATA_CLK
C4505
0.1uF
0.1uF
P4500
10067972-000LF
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
C4508
47uF
16V
16V
/CI_INPACK
016:AL9
AR4505
33
FE_TS_VAL_ERR
+5V_CI_Vs
C4502
0.1uF
CI_5V_CTL
[GP27]
007:H7
R4500
47
NAND_ALE
007:C2;007:E6
/CI_IORD
016:H24
/CI_WAIT 007:E6;016:AJ3
R4516
10K
/CI_CE2
016:H25;016:AJ2
AR4509
33
/CI_VS1
[GP26] 016:AJ3
/CI_IREQ
[GP39]
007:H5;016:AJ3
R4519
10K
OPT
EBI_RW
007:E6
R4503
10K
R
4
5
1
8
2
2
K
AR4519
33
/CI_IOWR
016:H25
/CI_CD1
007:H6;016:AJ3
AR4512
33
NAND_REb
007:C3;007:E6
C4507
0.1uF
16V
/CI_IOIS16
/CI_IORD
016:T13
R4521
10K
/CI_CE2
016:T13;016:AJ2
/CI_CE1
R4522
10K
/CI_INPACK
016:O9
C4500
0.1uF
16V
EBI_WE
007:E6
R4515
10K
R4523
10K
OPT
AR4504
10K
10K
AR4513
33
/CI_SEL 007:H5
/CI_CE2
CI_OUTCLK,CI_OUTDATA[0-7],CI_OUTSTART,CI_OUTVALID
/CI_CE1
016:G13;016:AJ2
EBI_CS
007:E7;007:E6;016:AL23
+5V_NORMAL
D3.3V
AR4506
33
CI_D[0-7]
016:F16
FE_TS_SYNC
C4504
0.1uF
+5V_CI_Vs
D3.3V
R4502
47
/CI_CD2
AR4507
33
R4510
100
R4509
100
R4512
10K
OPT
R4513
10K
10K
R4514
22K
R4508
0
R4507
100
OPT
R4506
100
R4505
0
R4504
100
C4510
0.1uF
16V
0.1uF
16V
C4509
4.7uF
16V
4.7uF
16V
R4526
2.2K
EUROBBTV
45
DVB-CI PULL-UP (Near CI Slot)
External Demod.
DVB-CI PULL-DOWN (Near CI Slot)
CI CONTROL BUFFER
CI POWER ENABLE CONTROL
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