LG 42PM4700 Service Manual page 22

TUNER [DVB-T/C/S2, TDSQ-G001D, H/NIM,F/NIM]
[DVB-T/C, TDSS-G101D, H/NIM]
[DVB-T2/C, TDSN-G301D, F/NIM]
[ATSC-KR/US, TDSS-H101F, H/NIM]
[ATSC-BR, TDSN-B001F, F/NIM]
[ATSC-CO, TDSH-T101F, H/NIM]
ATSC_CO
DVB_T/C
TU1001
TU1003
TDSH-T101F TDSS-G101D
RF_S/W_CTL NC
1 1
RESET RESET
2 2
SCL SCL
3 3
SDA SDA
4 4
+B1[3.3V] +3.3V
5 5
SIF SIF
6 6
+B2[1.8V] +1.8V
7 7
CVBS CVBS
8 8
IF_AGC IF_AGC
9 9
DIF[P] DIF[P]
10 10
DIF[N]
DIF[N]
11 11
12 12
SHIELD SHIELD
ATSC_NT
ATSC_BR
TU1001-*1
TU1002-*1
TDSS-H101F TDSN_B001F
RF_S/W_CTL
NC 1
1
RESET
RESET 2
2
SCL
SCL 3
3
SDA
SDA 4
4
+B1[3.3V]
+B1[3.3V] 5
5
SIF
SIF 6
6
+B2[1.8V]
+B2[1.8V] 7
7
CVBS
CVBS 8
8
NC_1
IF_AGC 9
9
NC_2
DIF[P] 10
10
NC_3
DIF[N] 11
11
+B3[3.3V]
12
12 +B4[1.23V]
13
NC_4
SHIELD
14
GND
15
ERROR
16
SYNC
17
VALID
18
MCLK
19
D0
20
D1
21
D2
22
D3
23
D4
24
D5
25
D6
26
D7
27
28
SHIELD
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.
Copyright © 2012 LG Electronics Inc. All rights reserved.
Only for training and service purposes
DVB_T2
S
TU1002 TU1000
TDSQ-G001D
TDSN-G301D
NO_EU
16V
0.1uF
R1009
NC_1 NC_1
C1021 1K
BR_CO
1 1
RESET RESET
2 2
SCL SCL
3 3
SDA SDA
4 4
+B1[3.3V] +B1[3.3V]
5 5
SIF SIF
6 6
C1000 close to TUNER
+B2[1.8V] +B2[1.8V]
0.1uF
7 7 16V
CVBS CVBS
8 8
+B3[2.5V] T/C_IF_AGC
9 9
NC_2 T/C_DIF[P]
10 10
NC_3 T/C_DIF[N]
11 11
R1000
0
+B4[3.3V] NC_2
T2_BR
12 12
+B5[1.23V] NC_3
13 13
NC_4 NC_4
14 14
Close to the tuner
GND GND_1
15 15
ERROR ERROR
16 16
SYNC SYNC
17 17
VALID VALID
18 18
MCLK MCLK
19 19
D0 D0
20 20
D1 D1
21 21
D2 D2
22 22
D3 D3
23 23
D4 D4
24 24
D5 D5
25 25
D6 D6
26 26
D7 D7
27 27
28 GND_2
28
GND_3
SHIELD 29
+B3[1.23V]
30
S2_RESET
31
+B4[3.3V]
32
S2_F22_OUTPUT
33
S2_SCL
34
S2_SDA
35
LNB
36
GND_4
37
38
SHIELD
Close to Tuner #38 pin
CLOSED TO TUNER
+3.3V_TU_BUF
R1001
10K
R1030
4.7K
C
R1008
0
B
Q1003
TU_RST
MMBT3904(NXP)
E
R1015
22
R1016
22
C1011 C1012
RF_SW_CTL
68pF 68pF
50V 50V
C1020
C1013
+3.3V_TU_BUF
0.01uF 0.1uF
C1019 C1022 16V
50V
0.1uF 10uF
16V 6.3V
OPT
R1012
470
1/10W
R1013
82
TU_SIF
E
Q1001
MMBT3906(NXP)
B +3.3V_TU_BUF
R1006
4.7K
C
R1014
200
+1.8V_TU
1/10W
C1001 C1003
0.1uF 10uF
E
16V 6.3V
Q1002
MMBT3906(NXP)
B
R1007 10K
IF_AGC
C
NO_T2_BR
C1006
0.047uF
DIF_P 25V
NO_T2_BR
DIF_N
+1.25V_TU
R1003
0
T2_BR
AR1000
33
1/16W
T2_S_BR
FE_TS_SYNC
FE_TS_VAL
OPT
FE_TS_CLK
C1017
AR1001
10pF
33
50V
1/16W
T2_S_BR FE_TS_D[0]
FE_TS_D[1]
FE_TS_D[2]
FE_TS_D[3]
AR1002
33
1/16W
T2_S_BR FE_TS_D[4]
FE_TS_D[5]
FE_TS_D[6]
FE_TS_D[7]
+1.25V_TU
+3.3V_TU
C1004 C1007
0.1uF 10uF
16V 6.3V R1011
S S 2.2K
S
S2_RESET
+3.3V_TU 0.1uF
16V
C1010
S
R1002
C1005 C1008
51
0.1uF 10uF
LNB_TX 16V 6.3V
S S S
Surge protectioin
3.0SMCJ20A(suzhougrande)
LNB_OUT
R1027
C1002 C1009 D1000
2.2K
1000pF 33pF S
50V 50V S
1W
S S
I2C_SCL6
I2C_SDA6
+3.3V_TU
C1014
10uF
6.3V
R1017
200
1/10W
TU_CVBS
+3.3V_TU_BUF
R1028 R1029
200 200
EU EU
1/10W 1/10W
ATV_OUT
E
Q1000
MMBT3906(NXP)
B
EU
C
FE_TS_D[0-7]
+3.3V_TU
R1020 R1021
3.3K 3.3K
S S
R1004
22 S
I2C_SCL4
R1005
22 S
I2C_SDA4
+3.3V_TU_BUF
DAC_3V3
L1000
BLM18PG121SN1D
C1018
0.1uF
16V
LGE Internal Use Only