LG 47GA7900-UA (CHASSIS:LA37G) 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.
SIGN600005
SCART_Rout
SCART_MUTE
SCART_Lout
DTV/MNT_R_OUT
+12V
C6005
33pF
EU
R6010
470K
OPT
R6008
33K
EU
C6004
0.1uF
50V
EU
R6000
2.2K
EU
L6000
EU
R6002
470K
OPT
Q6000
MMBT3904(NXP)
EU
E
B
C
R6011
2.2K
EU
DTV/MNT_R_OUT
C6003
33pF
EU
DTV/MNT_L_OUT
Q6001
MMBT3904(NXP)
EU
E
B
C
DTV/MNT_L_OUT
R6004
33K
EU
C6002
6800pF
OPT
C6007
6800pF
OPT
C6008
1uF
25V
EU
C6000
1uF
25V
25V
EU
IC6000
AZ4580MTR-E1
EU
3
IN1+
2
IN1-
4
VEE
1
OUT1
5
IN2+
6
IN2-
7
OUT2
8
VCC
SCART_AMP_R_FB
SCART_AMP_L_FB
Q6002
MMBT3906(NXP)
MMBT3906(NXP)
EU
E
B
C
R6003
10K
EU
R6001
10K
EU
R6012
4.7K
OPT
+3.5V_ST
R6013
1K
EU
R6014
1K
EU
[SCART AUDIO MUTE]
AUD_OUT >> EU/CHINA_HOTEL_OPT
60
SCART AUDIO AMP
2011.11.21
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.
Q6201
AO3407A
CI
G
D
S
+5V_CI_ON
C6207
4.7uF
10V
4.7uF
10V
OPT
R6218
10K
10K
CI
+5V_NORMAL
C6202
0.1uF
16V
OPT
R6242
2.2K
2.2K
CI
R6221
10K
10K
OPT
PCM_5V_CTL
R6248
10K
CI
R6223
4.7K
4.7K
CI
R6241
22K
22K
CI
Q6200
MMBT3904(NXP)
MMBT3904(NXP)
CI
E
B
C
C6210
1uF
25V
1uF
25V
OPT
C6210-*1
1uF
25V
1uF
25V
CI_MTK
CI POWER ENABLE CONTROL
62
CI SLOT
2011.10.31
Option FOR MTK
Option FOR LG1152
THERMAL
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.
R6403
OPT
4.7K
HP_ROUT
+3.3V_NORMAL
C6400
1uF
10V
1uF
10V
HP_OUT
L6400
120-ohm
HP_OUT
BLM18PG121SN1D
SIDE_HP_MUTE
R6404
4.7K
4.7K
HP_OUT
C6401
1uF
1uF
10V
HP_OUT
C6405
0.1uF
16V
HP_OUT
C6402
1uF
10V
1uF
10V
HP_ROUT_MAIN
R6400
4.7K
HP_OUT
R6405
1K
1K
HP_OUT
C6406
2.2uF
10V
2.2uF
10V
HP_OUT
HP_LOUT
Q6400
MMBT3904(NXP)
E
B
C
HP_LOUT_MAIN
R6401
OPT
R6402
4.7K
HP_OUT
+3.3V_NORMAL
C6404
2.2uF
10V
2.2uF
10V
HP_OUT
C6407
2.2uF
10V
HP_OUT
C6403
10uF
10V
10V
HP_OUT
HP_AMP_MUTE
R6406
10
10
1/16W
5%
5%
R6407
10
10
1/16W
5%
5%
C6408
0.47uF
16V
0.47uF
16V
HP_OUT
C6409
0.47uF
16V
0.47uF
16V
HP_OUT
IC6400
TPA6132A2
TPA6132A2
EAN60724701
HP_OUT
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
17
[EP]
2011.06.29
HEADPHONE AMP
61
EARPHONE AMP
From Micom
Close to the IC
Low Pass Filter
Place Near jack Side
THERMAL
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.
SIGN1100120
SIGN1100121
SIGN1100122
SIGN1100123
SIGN1100124
SIGN1100125
SIGN1100126
SIGN1100129
FE_TS_DATA[0]
FE_TS_DATA[1]
FE_TS_DATA[2]
FE_TS_DATA[3]
FE_TS_DATA[4]
FE_TS_DATA[5]
FE_TS_DATA[6]
FE_TS_DATA[7]
R6528
11K
1%
11K
1%
L6507
BLM18PG121SN1D
TU_PIP_JAPAN
+1.23V_D_Demod
C6514
100pF
50V
50V
+3.3V_D_Demod
C6515
0.1uF
C6554
100pF
50V
100pF
50V
+1.8V_TU
I2C_SCL6
C6548
0.1uF
16V
0.1uF
16V
R6534
0
OPT
+3.3V_NORMAL
C6520
0.1uF
16V
C6506
68pF
50V
68pF
50V
OPT
+3.3V_TU
R6529
10K
1%
10K
1%
L6508
BLM18PG121SN1D
TU_PIP_JAPAN
+1.23V_D_Demod
+3.3V_TU
TU_CVBS
L6500
BLM18PG121SN1D
R6531
1
1
IC6503
AZ1117BH-1.8TRE1
1
ADJ/GND
2
OUT
3
IN
R6510
33
FE_TS_SYNC
FE_TS_VAL
R6509
33
R6527
20K
1%
20K
1%
C6546
10uF
10V
10uF
10V
C6516
0.1uF
16V
I2C_SDA6
FE_TS_DATA[0-7]
/TU_RESET1
L6502
BLM18PG121SN1D
TU_F-NIM
IC6501
AP2132MP-2.5TRG1
EAN61387601
3
VIN
2
EN
4
VCTRL
1
PG
5
NC
6
VOUT
7
ADJ
8
GND
9
[EP]
C6538
10uF
10uF
10V
L6503
BLM18PG121SN1D
C6508
68pF
50V
68pF
50V
OPT
R6533
0
OPT
+3.3V_TU
C6530
0.1uF
16V
R6506
100
T/C&AT&CHB
L6501
BLM18PG121SN1D
C6535
1uF
1uF
+3.3V_TU
+5V_NORMAL
LNB_TX
IF_AGC
+3.3V_D_Demod
C6550
0.1uF
0.1uF
16V
0.1uF
C6540
+1.8V_TU
FE_TS_CLK
+3.3V_TU
Q6500
MMBT3906(NXP)
E
B
C
C6542
0.1uF
0.1uF
R6515
4.7K
R6508
100
100
NOT_BR_TW_CN_TUNER
Q6501
MMBT3906(NXP)
E
B
C
C6500
0.1uF
16V
16V
LG1145_ATSC
RF_SWITCH_CTL
C6529
22uF
10V
+1.23V_D_Demod
R6516
470
IF_N
R6513
10
+3.3V_TU
R6523
10K
10K
+1.8V_TU
+3.3V_TU
I2C_SCL4
+3.3V_TU
R6518
82
82
IF_P
C6531
0.1uF
0.1uF
C6526
0.1uF
16V
LNB_OUT
/S2_RESET
I2C_SDA4
TUNER_SIF
C6533
10uF
10V
C6549
10uF
10V
R6520
200
R6521
200
TU6503-*1
TDSQ-G351D
TU_T2/C/S2
1
N.C_1
2
RESET
3
SCL
4
SDA
5
+B1[3.3V]
6
SIF
7
+B2[1.8V]
8
CVBS
9
N.C_2
10
N.C_3
11
N.C_4
12
+B3[3.3V]
13
+B4[1.23V]
14
N.C_5
15
GND_1
16
ERROR
17
SYNC
18
VALID
19
MCLK
20
D0
21
D1
22
D2
23
D3
24
D4
25
D5
26
D6
27
D7
28
GND_2
29
GND_3
30
+B5[1.23V]
31
S2_RESET
38
SHIELD
32
+B6[3.3V]
33
S2_F22_OUTPUT
34
S2_SCL
35
S2_SDA
36
LNB
37
GND_4
R6504
33
R6503
33
TU6501
TDSN-G351D
TDSN-G351D
1
NC_1
2
RESET
3
SCL
4
SDA
5
+B1[3.3V]
6
SIF
7
+B2[1.8V]
8
CVBS
9
NC_2
10
NC_3
11
NC_4
12
+B3[3.3V]
13
+B4[1.23V]
14
NC_5
15
GND
16
ERROR
17
SYNC
18
VALID
19
MCLK
20
D0
21
D1
22
D2
23
D3
24
D4
25
D5
26
D6
27
D7
28
SHIELD
A1
A1
B1
B1
TU6502
TDSQ-H051F
1
+5V[SPLITTER]
2
RESET
3
TU_SCL
4
TU_SDA
5
M_+3.3V
6
M_SIF
7
M_+1.8V
8
M_CVBS
9
M_IF_AGC
10
M_DIF[P]
11
M_DIF[N]
12
S_3.3V
13
S_1.8V
14
S_CVBS
15
GND_1
16
SD_ERROR
17
SD_SYNC
18
SD_VALID
19
SD_MCLK
20
SD_SERIAL_D0
21
N.C_1
22
N.C_2
23
N.C_3
24
N.C_4
25
N.C_5
26
N.C_6
27
N.C_7
28
GND_2
29
GND_3
30
SD_1.23V_DEMOD
31
SD_RESET
36
SHIELD
32
SD_3.3V_DEMOD
33
N.C_8
34
SD_SCL
35
SD_SDA
A1
A1
B1
B1
TU6503
TDSQ-G051D
1
N.C_1
2
RESET
3
SCL
4
SDA
5
+3.3V_TUNER
6
SIF
7
+1.8V_TUNER
8
CVBS
9
T/C_IF_AGC
10
T/C_DIF[P]
11
T/C_DIF[N]
12
N.C_2
13
N.C_3
14
N.C_4
15
GND_1
16
ERROR
17
SYNC
18
VALID
19
MCLK
20
D0
21
D1
22
D2
23
D3
24
D4
25
D5
26
D6
27
D7
28
GND_2
29
GND_3
30
+1.23V_S2_DEMOD
31
S2_RESET
38
SHIELD
32
+3.3V_S2_DEMOD
33
S2_F22_OUTPUT
34
S2_SCL
35
S2_SDA
36
LNB
37
GND_4
A1
A1
B1
B1
R6535
0
DVB_S
TU_GND_B
TU_GND_A
TU_GND_B
TU_GND_A
TU_GND_A
TU_GND_B
TU_GND_A
TU_GND_B
TU_GND_B
TU_GND_A
R7366
0
NON_CHINA
R7367
0
NON_CHINA
R7368
0
NON_CHINA
R7369
0
NON_CHINA
TU_PIN3
TU_PIN4
+3.3V_TU
TU_PIN6
+3.3V_TU
TU_PIN4
TU_PIN6
TU_PIN3
TU_PIN7
TU_PIN7
R6508-*1
1K
5%
BR_TW_CN_TUNER
R6501
100
100
TU_CHANA
TU_PIN2
TU_PIN2
/TU_RESET1
TU_GND_B
TU_GND_A
TU6508
TDSN-T751F
TDSN-T751F
TU_TW
1
RF_S/W_CTL
2
RESET
3
SCL
4
SDA
5
+B1[3.3V]
6
SIF
7
+B2[1.8V]
8
CVBS
9
IF_AGC
10
DIF[P]
11
DIF[N]
12
NC_1
13
NC_2
14
NC_3
15
GND
16
NC_4
17
NC_5
18
NC_6
19
NC_7
20
NC_8
21
NC_9
22
NC_10
23
NC_11
24
NC_12
25
NC_13
26
NC_14
27
NC_15
SHIELD
59
LNA_CTRL1
57
LNA_CTRL2
58
A1
A1
B1
B1
TU6509
TDSW-B651F
TU_BR
1
+B1(3.3V)_S/P
2
RESET
3
SCL
4
SDA
5
+B1[3.3V]
6
SIF
7
+B2[1.8V]
8
CVBS
9
NC_2
10
NC_3
11
NC_4
12
+B3[3.3V]
13
+B4[1.23V]
14
NC_5
15
GND_1
16
M_ERROR
17
M_SYNC
18
M_VALID
19
M_MCLK
20
M_D0
21
M_D1
22
M_D2
23
M_D3
24
M_D4
25
M_D5
26
M_D6
27
M_D7
28
GND_2
29
GND_3
30
+B5[1.23V]
31
D_RESET
32
+B6[3.3V]
33
NC_6
34
D_SCL
35
D_SDA
GND_4
38
GND_5
39
S_ERROR
40
S_SYNC
41
S_VALID
42
S_MCLK
43
S_D7
44
NC_7
45
NC_8
46
NC_9
47
NC_10
48
NC_11
49
RF_S/W_CTRL
50
NC_12
51
SHIELD
59
A1
A1
B1
B1
RF_SWITCH_CTL_50
RF_SWITCH_CTL_50
R6500
1K
NON_CHINA
C6502
0.1uF
16V
C6504
18pF
50V
18pF
50V
C6505
18pF
50V
18pF
50V
/S2_RESET
+3.3V_D_Demod
L6506
BLM18PG121SN1D
C6507
10uF
10uF
10V
C6501
10uF
10V
10uF
10V
TU6505
TDSM-C601D
TU_CHINA
8
CVBS
9
NC_1
10
NC_2
11
NC_3
12
+B3[3.3V]
13
+B4[1.23V]
14
DEMOD_RESET
15
GND
16
NC_4
17
SYNC
18
VALID
19
MCLK
20
D0
21
D1
22
D2
23
D3
24
D4
25
D5
26
D6
27
D7
RF_S/W_CTL
50
RESET
51
SHIELD
59
SIF
55
+B1[3.3V]
54
SDA
53
SCL
52
+B2[1.8V]
56
A1
A1
A2
A2
B1
B1
B2
B2
TU6500-*1
TDSS-G151D
TDSS-G151D
T/C_H/NIM_V
5
+B1[3.3V]
11
DIF[N]
2
RESET
10
DIF[P]
4
SDA
1
NC
9
IF_AGC
8
CVBS
3
SCL
7
+B2[1.8V]
6
SIF
12
SHIELD
A1
A1
B1
B1
TU6500
TDSS-H651F(B)
TDSS-H651F(B)
TU_US
5
+B1[3.3V]
11
DIF[N]
2
RESET
10
DIF[P]
4
SDA
1
NC
9
IF_AGC
8
CVBS
3
SCL
7
+B2[1.8V]
6
SIF
12
SHIELD
A1
A1
B1
B1
C6537
1000pF
630V
TU_CHANA
C6536
1000pF
630V
1000pF
630V
TU_CHANA
R6511 1K
TU_CHINA
C6503
0.1uF
16V
0.1uF
16V
65
TUNER
2012.03.08
R2
T2 : Max 1.7A
else : Max mA
should be guarded by groumd
2012 perallel
because of derating
because of derating
CHB : Max mA
mA(MAX)
2. No via on both of them
Ground Width >= 24mils
2A
Close to the tuner
close to Tuner
close to TUNER
Vout=0.6*(1+R1/R2)
Close to the tuner
Signal to Signal Width = 12mils
R1
3. Signal Width >= 12mils
else : Max 0.7A
1. should be guarded by ground
GND seperation for CHINA tuner
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