LG 55EA970T, Service Manual

Page: 48 / 105

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.
FE_DEMOD1_TS_VAL
FE_LNA_Ctrl1
FE_DEMOD1_TS_DATA[7]
FE_DEMOD3_TS_ERROR
I2C_SCL6_TU
+3.3V_TU
FE_DEMOD1_TS_DATA[1]
+3.3V_TU
IF_N
RF_SWITCH_CTL_TU
FE_DEMOD3_TS_DATA
RF_SWITCH_CTL_50
FE_DEMOD1_TS_DATA[2]
LNB_OUT
+3.3V_D_Demod
FE_DEMOD1_TS_DATA[3]
TUNER_SIF_TU
C6700
0.1uF
TU_M/W
I2C_SDA6_TU
LNB_TX
TU_+1.8V_TU
R6700
0
NON_CHINA
I2C_SDA6_TU
TU_PIN2
I2C_SDA6_TU
R6701
0
NON_CHINA
+3.3V_D_Demod
CN_RESET_TU
FE_DEMOD2_TS_ERROR
TU_+1.8V_TU
I2C_SCL6_TU
FE_DEMOD1_TS_DATA[5]
L6700
BLM18PG121SN1D
TU_MNQW
TU_+1.8V_TU
TU_GND_B
C6702
0.1uF
16V
TU_W_JP
FE_LNA_Ctrl2
TU_GND_B
FE_DEMOD3_TS_CLK
RF_SWITCH_CTL_50
/TU_RESET2
FE_DEMOD2_TS_SYNC
FE_DEMOD3_TS_VAL
TU_PIN2
FE_DEMOD1_TS_ERROR
R6704
100
TU_M/W
IF_AGC_TU
TUNER_SIF_TU
TU_GND_B
+3.3V_D_Demod2
I2C_SDA6_TU
FE_DEMOD2_TS_CLK
C6703
0.1uF
TU_MNQW
TU6704-*4
TDSN-T751F
TU_TW_SINGLE
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
TU_CVBS_TU
/S2_RESET_TU
FE_DEMOD2_TS_VAL
+3.3V_TU
TUNER_SIF_TU
FE_DEMOD1_TS_CLK
I2C_SCL6_TU
IF_P
FE_DEMOD1_TS_DATA[4]
FE_DEMOD3_TS_SYNC
TU_GND_B
FE_DEMOD2_TS_DATA
/TU_RESET1_TU
I2C_SCL6_TU
Power_D_Demod_TU
R6703
0
NON_CHINA
TU_GND_A
TU_GND_B
TU_GND_A
TU_GND_B
TU_PIN2
I2C_SCL4_TU
TU6705
TDSN-G351D
TU_T2/C
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
+3.3V_TU
C6701
0.1uF
16V
TU_W_JP
TU_GND_A
TUNER_SIF_TU
TU_+1.8V_TU
FE_DEMOD1_TS_DATA[6]
+3.3V_TU
FE_DEMOD1_TS_DATA[0]
FE_DEMOD1_TS_SYNC
+1.23V_D_Demod_TU
R6702
0
NON_CHINA
TU_GND_B
I2C_SDA4_TU
R6707 0
TU_Q_T2/S2
C6705
10uF
10V
R6708
0
TU_W_JP
TU6702
TDSQ-H651F(B)
TU_Korea_PIP
1
+B1[+3.3V_S/P]
2
RESET
3
TU_SCL
4
TU_SDA
5
+B2[3.3V_M]
6
S_SIF
7
+B3[1.8V_M]
8
S_CVBS
9
M_IF_AGC
10
M_DIF[P]
11
M_DIF[N]
12
+B4[3.3V_S]
13
+B5[1.8V_S]
14
NC_1
15
GND
16
SD_ERROR
17
SD_SYNC
18
SD_VALID
19
SD_MCLK
20
SD_SERIAL_D0
21
NC_2
22
NC_3
23
NC_4
24
NC_5
25
NC_6
26
NC_7
27
NC_8
28
GND_1
29
GND_2
30
+B6[1.23V_SD]
31
SD_RESET
36
SHIELD
32
+B7[3.3V_SD]
33
NC_9
34
SD_SCL
35
SD_SDA
A1
A1
B1
B1
TU6703
TDSQ-G651D(B)
TU_Q_T2/S2
1
N.C_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
NC_5
13
NC_6
14
NC_7
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
GND_2
29
GND_3
30
+B3[1.23V]
31
DEMOD_RESET
38
+B4[3.3V]
32
F22_OUTPUT
33
DEMOD_SCL
34
DEMOD_SDA
35
LNB
36
GND_4
37
SHIELD
A1
A1
B1
B1
TU6704
TDSW-J551F(B)
TU_W_JP
1
+3.3V_SPLITTER
2
RESET_T1
3
SCL_T
4
SDA_T
5
+3.3V_T1
6
NC_1
7
+1.8V_T1
8
NC_2
9
NC_3
10
NC_4
11
NC_5
12
+3.3V_T2
13
+1.8V_T2
28
GND_2
29
GND_3
30
+B5[1.23V]
31
D_RESET
36
LNB
32
+B6[3.3V]
33
NC_6
34
D_SCL
35
D_SDA
GND_4
37
GND_5
38
GND_6
39
TS1_ERROR
40
TS1_SYNC
41
TS1_VALID
42
TS1_MCLK
43
TS1_DATA
44
TS2_ERROR
45
TS2_SYNC
46
TS2_VALID
47
TS2_MCLK
48
TS2_DATA
49
NC_7
50
RESET_T2
51
LNA_CTR1
57
LNA_CTR2
58
SHIELD
59
NC_8
55
+3.3V_S_TUNER
54
SDA_S
53
SCL_S
52
NC_9
56
A1
A1
B1
B1
TU6700
TDSS-H651F(B)
TU_S_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
TU6701
TDSM-C651D(B)
TU_M_CN
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
TU6702-*1
TDSQ-A651D(B)
TU_AJJA
1 +B1[+3.3V_S/P]
2 RESET
3 TU_SCL
4 TU_SDA
5
+B2[3.3V_M]
6
S_SIF
7
+B3[1.8V_M]
8
S_CVBS
9
M_IF_AGC
10
M_DIF[P]
11 M_DIF[N]
12 +B4[3.3V_S]
13 +B5[1.8V_S]
14 NC_1
15
GND
16
SD_ERROR
17
SD_SYNC
18
SD_VALID
19
SD_MCLK
20
SD_SERIAL_D0
21 NC_2
22 NC_3
23 NC_4
24 NC_5
25
NC_6
26
NC_7
27
NC_8
28
GND_1
29
GND_2
30
+B6[1.23V_SD]
31 SD_RESET
36
SHIELD
32 +B7[3.3V_SD]
33 NC_9
34 SD_SCL
35
SD_SDA
A1
A1
B1
B1
C6706
1000pF
630V
TU_M_CN
C6707
1000pF
630V
TU_M_CN
C6709
10uF
10V
TU_QW
+3.3V_TU
L6701
BLM18PG121SN1D
TU_QW
C6708
0.1uF
TU_QW
+3.3V_D_Demod2
C6704
10uF
10V
TU_MNQW
TU6704-*1
TDSW-B652F(B)
TU_BR
1 +B1(3.3V)_S/P
2 T_RESET
3 TU_SCL
4 TU_SDA
5
+B2[3.3V_M]
6
S_SIF
7
+B3[1.8V_M]
8
S_CVBS
9
M_IF_AGC
10
M_DIF[P]
11 M_DIF[N]
12 +B4[3.3V_S]
13 +B5[1.8V_S]
28
GND_1
29
GND_2
30
+B6[1.23V_D]
31 D_RESET
32 +B7[3.3V_D]
33 NC_1
34 D_SCL
35
D_SDA
GND_3
38
GND_4
39
MD_ERROR
40
MD_SYNC 41
MD_VALID 42
MD_MCLK 43
MD_DATA 44
SD_ERROR
45
SD_SYNC
46
SD_VALID
47
SD_MCLK
48
SD_DATA
49
RF_S/W_CTRL 50
NC_2 51
SHIELD
59
A1 A1 B1 B1
TU6704-*2
TDSW-A652F(B)
TU_TW
1 +B1(3.3V)_S/P
2 T_RESET
3 TU_SCL
4 TU_SDA
5
+B2[3.3V_M]
6
S_SIF
7
+B3[1.8V_M]
8
S_CVBS
9
M_IF_AGC
10
M_DIF[P]
11 M_DIF[N]
12 +B4[3.3V_S]
13 +B5[1.8V_S]
28
GND_1
29
GND_2
30
+B6[1.23V_D]
31 D_RESET
32 +B7[3.3V_D]
33 NC_1
34 SD_SCL
35
SD_SDA
GND_3
38
GND_4
39
NC_2
40
NC_3 41
NC_4 42
NC_5 43
NC_6 44
SD_ERROR
45
SD_SYNC
46
SD_VALID
47
SD_MCLK
48
SD_DATA
49
RF_S/W_CTRL 50
NC_7 51
SHIELD
59
A1 A1 B1 B1
R6705
10K
TU_W_JP
R6706
10K
TU_W_JP
TU6704-*3
TDSW-K651F(B)
TU_CO
1
+B1(3.3V)_S/P
2
T_RESET
3
TU_SCL
4
TU_SDA
5
+B2[3.3V_M]
6 S_SIF
7 +B3[1.8V_M]
8 S_CVBS
9
M_IF_AGC
10
M_DIF[P]
11
M_DIF[N]
12
+B4[3.3V_S]
13
+B5[1.8V_S]
28 GND_1
29
GND_2
30
+B6[1.1V_D]
31
D_RESET
32
+B7[3.3V_D]
33
NC_1
34
D_SCL
35
D_SDA
GND_3 38
GND_4
39
MD_ERROR
40
MD_SYNC
41
MD_VALID
42
MD_MCLK
43
MD_DATA
44
SD_ERROR
45
SD_SYNC 46
SD_VALID 47
SD_MCLK 48
SD_DATA
49
RF_S/W_CTRL
50
NC_2
51
SHIELD
59
A1
A1
B1
B1
+1.8V_TU
ZD6501
2.5V
OPT
TU_SYMBOL 2012.09.14
12
18
11
GND seperation for CHINA tuner
9
22
41
42
51
52
40
4
6
50
3
46
44
25
27
5
31
16
47
54
2
14
23
17
49
53
30
35
20
58
43
10
56
45
55
57
34
32
19
7
13
26
24
36
1
33
21
8
48
BSD-NC4_H067-HD
EOS for Tuner 1.8V LDO
Copyright ⓒ 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only