LG 55EM970V-ZA (CHASSIS:ED23E) 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.
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
L6400
120-ohm
BLM18PG121SN1D
SIDE_HP_MUTE
R6404
4.7K
4.7K
C6401
1uF
1uF
10V
C6405
0.1uF
16V
C6402
1uF
10V
1uF
10V
HP_ROUT_MAIN
R6400
4.7K
R6405
1K
1K
C6406
2.2uF
10V
2.2uF
10V
HP_LOUT
Q6400
MMBT3904(NXP)
E
B
C
HP_LOUT_MAIN
R6401
OPT
R6402
4.7K
+3.3V_NORMAL
C6404
2.2uF
10V
2.2uF
10V
C6407
2.2uF
10V
C6403
10uF
10V
10V
HP_AMP_MUTE
R6406
10
10
1/16W
5%
5%
R6407
10
10
1/16W
5%
5%
C6408
0.47uF
16V
0.47uF
16V
C6409
0.47uF
16V
0.47uF
16V
IC6400
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
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.
FE_TS_DATA[0]
FE_TS_DATA[2]
FE_TS_DATA[5]
FE_TS_DATA[1]
FE_TS_DATA[3]
FE_TS_DATA[7]
FE_TS_DATA[4]
FE_TS_DATA[6]
L6508
BLM18PG121SN1D
CHB
FE_TS_CLK
R6503
22
DVB_S&CHB
FE_TS_DATA[0-7]
+1.8V_TU
Q6501
MMBT3906(NXP)
E
B
C
+3.3V_TU
TU6501-*1
TDSN-B051F
TDSN-B051F
BR_F/NIM_V
1
RF_S/W_CTL
2
RESET
3
SCL
4
SDA
5
+B1[3.3V]
6
SIF
7
+B2[1.8V]
8
CVBS
9
NC_1
10
NC_2
11
NC_3
12
+B3[3.3V]
13
+B4[1.23V]
14
NC_4
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
+5V_TU
CHB_ERR
R6508-*1
1K
5%
BR_TW_CN_TUNER
+3.3V_TU
C6551
100pF
100pF
50V
C6508-*1
68pF
50V
68pF
50V
BR_TW_CN_TUNER
R6525
0
0
NOT_L9_T2/C/S
CHB_ERR
TU_TS_VAL
+1.23V_TU
TU6502
TDSQ-H051F
CHB_V
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
IC6503
AZ1117BH-1.8TRE1
1
ADJ/GND
2
OUT
3
IN
C6542
0.1uF
0.1uF
NOT_T/C&AT
R6515
4.7K
C6535
1uF
1uF
OPT
R6520
220
Q6500
MMBT3906(NXP)
E
B
C
C6532
0.1uF
0.1uF
16V
LNB_OUT
TUNER_SIF
/S2_RESET
LNB_OUT
R6500
0
RF_SWITCH
ATV_OUT
R6532
0
0
NOT_L9_BR_TW_CN Tuner
C6550
0.1uF
0.1uF
16V
R6529
10K
1%
10K
1%
NOT_T/C&AT
+3.3V_D_Demod
C6500
0.1uF
16V
16V
L9 ATSC
TU6503
TDSQ-G051D
T/C/S2_V
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
IF_P
+3.3V_D_Demod
R6500-*1
1K
5%
BR_TW_CN_TUNER
CHB_SYNC
+5V_TU
R6528-*1
12K
12K
1/16W
1%
1%
CN
I2C_SCL4
CHB_CLK
L6507
BLM18PG121SN1D
CHB
C6524
100pF
100pF
OPT
R6506
100
T/C&AT&CHB
R6528
11K
1%
11K
1%
NOT_T/C&AT
C6518
18pF
50V
18pF
50V
OPT
C6526
0.1uF
16V
TU6500
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
IC6500
74LVC1G08GW
L9_T2/C/S
3
GND
2
A
4
Y
1
B
5
VCC
+1.23V_TU
CHB_CLK
L6503
BLM18PG121SN1D
C6521
0.1uF
0.1uF
OPT
CHB_CVBS
C6503
0.1uF
16V
0.1uF
16V
RF_SWITCH
C6509
0.1uF
0.1uF
16V
CHB
+5V_NORMAL
C6527
0.1uF
OPT
CHB_DATA
TU6501
TDSN-G351D
T2/C_F/NIM_DEV
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
R6532-*1
BLM18PG121SN1D
L9/BR_TW_CN_TUNER
120-ohm
R6509
33
C6510
1000pF
50V CN
1000pF
50V CN
CHB_VAL
TU6501-*2
TDSN-C251D
TDSN-C251D
CN_ATBM
1
RF_S/W_CTL
2
RESET
3
SCL
4
SDA
5
+B1[3.3V]
6
SIF
7
+B2[1.8V]
8
CVBS
9
NC_1
10
NC_2
11
NC_3
12
+B3[3.3V]
13
+B4[1.23V]
14
NC_4
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
+3.3V_TU
FE_TS_SYNC
TU6500-*1
TDSS-H151F
TDSS-H151F
AT_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
C6538
10uF
10uF
10V
NOT_T/C&AT
C6519
10uF
10uF
10V
DVB_S&CHB
L6506
BLM18PG121SN1D
NOT_T/C&AT
TU6501-*3
TDSN-C051D
TDSN-C051D
CN_LG3921
1
RF_S/W_CTL
2
RESET
3
SCL
4
SDA
5
+B1[3.3V]
6
SIF
7
+B2[1.8V]
8
CVBS
9
NC_1
10
NC_2
11
NC_3
12
+B3[3.3V]
13
+B4[1.23V]
14
NC_4
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
+3.3V_TU
RF_SWITCH_CTL
R6513
10
DVB_S&CHB
DVB_S&CHB
+3.3V_TU_IN
C6513
4700pF
50V CN
4700pF
50V CN
R6523
10K
10K
NOT_T/C&AT
C6536
22uF
10V
R6510
33
/TU_RESET
LNB_TX
C6531
0.1uF
0.1uF
I2C_SDA4
R6516
470
C6544
0.1uF
16V
L9_T2/C/S
L6502
BLM18PG121SN1D
T2/C&CN&BR
+3.3V_TU
+3.3V_D_Demod
I2C_SCL6
C6525
0.1uF
16V
OPT
C6507
100pF
50V
100pF
50V
T2/C&CHB&CN&BR
AR6501
0
0
NOT_T/C&AT&CHB
C6506-*1
68pF
50V
68pF
50V
BR_TW_CN_TUNER
R6521
220
C6546
10uF
10V
10uF
10V
R6512
2.2K
OPT
TU_TS_VAL
C6539
0.1uF
16V
+1.8V_TU
+5V_NORMAL
C6508
18pF
50V
18pF
50V
OPT
C6516
0.1uF
16V
T2/C&CHB&CN&BR
C6517
18pF
50V
18pF
50V
OPT
LNB_TX
TU6503-*1
TDSQ-G351D
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
A1
A1
B1
B1
L6501
BLM18PG121SN1D
DVB_S&CHB
R6519
1K
OPT
C6534
22uF
10V
R6526
100
100
L9_T2/C/S
1/16W
5%
5%
IF_N
C6529
22uF
10V
AR6502
0
NOT_T/C&AT&CHB
R6527
20K
1%
20K
1%
NOT_T/C&AT
TU_CVBS
TU_TS_ERR
C6514
0.1uF
16V
16V
L6500
BLM18PG121SN1D
+5V_TU
AR6500
0
NOT_T/C&AT&CHB
R6531
1
1
C6533
10uF
16V
NOT_T/C&AT
+3.3V_NORMAL
C6501
10uF
10V
10uF
10V
CHB
FE_TS_VAL
C6522
0.1uF
16V
0.1uF
C6540
NOT_T/C&AT
+3.3V_D_Demod
+3.3V_TU
C6506
18pF
50V
50V
OPT
C6505
0.1uF
0.1uF
16V
CHB_SYNC
TU6504
TDSH-T151F
TDSH-T151F
TW_H/NIM
5
+B1[3.3V]
11
DIF[N]
2
RESET
10
DIF[P]
4
SDA
1
RF_S/W_CTL
9
IF_AGC
8
CVBS
3
SCL
7
+B2[1.8V]
6
SIF
12
SHIELD
A1
A1
B1
B1
TU_TS_ERR
IF_AGC
R6518
82
82
R6504
22
DVB_S&CHB
R6508
100
100
MTK/L9_DVB/ATSC/NTSC
CHB_DATA
R6511
100K
OPT
C6549
10uF
16V
NOT_T/C&AT
+1.8V_TU
C6523
100pF
50V
100pF
50V
CHB
+5V_TU
C6515
0.1uF
DVB_S&CHB
DVB_S&CHB
C6511
100pF
50V
100pF
50V
C6528
10uF
6.3V
6.3V
OPT
+1.23V_TU
IC6501
AP2132MP-2.5TRG1
EAN61387601
NOT_T/C&AT
3
VIN
2
EN
4
VCTRL
1
PG
5
NC
6
VOUT
7
ADJ
8
GND
9
[EP]
ATV_OUT
I2C_SDA6
C6520
0.1uF
16V
MTK/L9_DVB/ATSC/NTSC
CHB_VAL
CHB_CVBS
C6530
0.1uF
16V
C6548
0.1uF
16V
0.1uF
16V
C6512
100pF
100pF
DVB_S&CHB
65
TUNER
2011.11.21
CHB
AT_H/NIM
CHB : Max 480mA
T2/C&CHB&CN
BR
T2/C
RF_SWITCH
T2/C&CHB&CN
close to TUNER
Vout=0.6*(1+R1/R2)
NOT_T/C&AT&CHB
L9_T2/C/S
T2/C&CN
Seperate GND for CHB
Not_L9_T2/C/S
DVB_S&CHB
NOT_T/C&AT&CHB
close to TUNER
Close to the tuner
1. should be guarded by ground
2012 perallel
because of derating
because of derating
Not_L9_T2/C/S
T2 : Max 1.7A
R1
150mA(MAX)
NOT_T/C&AT&CHB
Signal to Signal Width = 12mils
NOT_T/C&AT
Not_L9_T2/C/S
CN
T2/C/S2
DVB_S&CHB
465mA(MAX)
Not_L9_T2/C/S
R2
should be guarded by groumd
Not_L9_T2/C/S
T2/C_F/NIM
Close to the tuner
close to TUNER
T/C&AT&CHB
Not_L9_T2/C/S
close to Tuner
DVB_S
NOT_T/C&AT
T2/C&CHB&CN
else : Max 240mA
T/C_H/NIM
CHB
2A
2. No via on both of them
T/C/S2
NOT_T/C&AT&CHB
T2/C&CN
else : Max 0.7A
H/NIM&CHB
T2/C
ERROR & VALID PIN
DVB_S
NOT_DVB_S
Ground Width >= 24mils
CN
NOT_T/C&AT
NOT_T/C&AT
NOT_DVB_S
Close to the tuner
T/C&AT&CHB
T/C&AT&CHB
DVB_S&CHB
NOT_DVB_S
RF_SWITCH_CTL USE: T2/C,T/C,ATSC,DTMB.ISDB-T
T/C&AT&CHB
NOT_T/C&AT
T/C/S & H/NIM & T2/C TUNER(EU & CHINA)
3. Signal Width >= 12mils
NOT_DVB_S
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.
A_GND
LNB_OUT
DCDC_GND
DCDC_GND
A_GND
A_GND
R6901
33
LNB
A_GND
+12V
LNB_TX
L6900
33UH
SP-7850_33
LNB
R6900
33
LNB
C6907
0.22uF
LNB
A_GND
C6902
1uF
1uF
50V
LNB
+12V_LNB
DCDC_GND
C6906
68uF
35V
LNB
A_GND
I2C_SDA4
C6905
22000pF
LNB
I2C_SCL4
A_GND
R6903
4.7K
LNB
D6901
40V
LNB_SMAB34
C6900
0.22uF
25V
LNB
C6901
0.01uF
50V
LNB
D6903
40V
LNB_SMAB34
L6901
BLM18PG121SN1D
LNB
IC6900
A8290SETTR-T
LNB
1
BOOST
3
TCAP
7
TDI
9
VREG
10
SDA
11
ADD
12
SCL
13
NC_2
14
IRQ
15
NC_3
16
NC_4
17
NC_5
18
NC_6
19
BFC
20
NC_7
21
NC_8
22
BFO
23
NC_9
24
BFI
25
VIN
26
LX
27
GNDLX
28
LNB
5
TDO
8
GND
6
EXTM
4
NC_1
2
VCP
29
[EP]
C6908
27pF
OPT
C6903 0.1uF
LNB
C6909
27pF
OPT
D6902
40V
LNB_SMAB34
A_GND
+3.3V_NORMAL
DCDC_GND
A_GND
+12V_LNB
A_GND
C6911
0.1uF
50V
0.1uF
50V
LNB
C6904
0.1uF
50V
0.1uF
50V
LNB
C6912
68uF
35V
LNB
D6900
30V
MBR230LSFT1G
LNB
R6906
2.2K
1W
2.2K
1W
LNB
D6904
LNB
C6910
10uF
25V
10uF
25V
LNB
R6904
0
R6905
0
C6916
18pF
18pF
LNB
C6915
18pF
18pF
OPT
C6913
33pF
33pF
OPT
C6914
33pF
33pF
LNB
D6901-*1
40V
LNB_SX34
D6902-*1
40V
LNB_SX34
D6903-*1
40V
LNB_SX34
C6917
0.1uF
50V
0.1uF
50V
LNB
C6918
0.1uF
50V
0.1uF
50V
LNB
(Option:LNB)
DVB-S2 LNB Part Allegro
DCDC_GND and A_GND are connected in pin#27
3A
Max 1.3A
PCB_GND and A_GND are connected
Input trace widths should be sized to conduct at least 3A
2A
DCDC_GND and A_GND are connected
2.4A
close to Boost pin(#1)
Ouput trace widths should be sized to conduct at least 2A
close to VIN pin(#25)
69
LNB
2011.11.21
Close to Tuner
Surge protectioin
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