LG 42LV375H Service Manual page 33

CAN H-NIM/NIM TUNER for EU
TU2701
TU2701-*1
TDFR-G155D
TDFR-G135D
VERTICAL_NIM
RF_S/W_CNTL
1 HORIZONTAL_NIM
BST_CNTL
2
RF_S/W_CNTL
+B1[5V]
3
NC[RF_AGC] 1
4
AS
5
BST_CNTL
SCL[A_DEMOD]
6
2
SDA[A_DEMOD]
7
NC(IF_TP)
8
+B1[5V]
SIF
9
3
NC
10
VIDEO
11
GND NC[RF_AGC]
12
4
1.2V
13
3.3V
14
AS
RESET
15
5
2.5V
16
SCL[D_DEMOD]
17
SCL[A_DEMOD]
SDA[D_DEMOD]
18
6
ERR
19
SYNC
20
SDA[A_DEMOD]
VALID
21
7
MCL
22
D0
23
NC(IF_TP)
D1
24
8
D2
25
D3
26
SIF
D4
27
9
D5
28
D6
29
NC
D7
30
31
10
SHIELD
VIDEO
11
GND
12
1.2V
EU_VERTICAL_NIM_T2
13
TU2701-*2
TDFR-G055D
3.3V
RF_S/W_CNTL 14
1
BST_CNTL
2
+B1[5V]
RESET
3
NC[RF_AGC] 15
4
AS
5
SCL[A_DEMOD] 2.5V
6
SDA[A_DEMOD] 16
7
NC(IF_TP)
8
SIF SCL[D_DEMOD]
9
NC 17
10
VIDEO
11
GND SDA[D_DEMOD]
12
1.2V 18
13
3.3V
14
RESET ERR
15
2.5V 19
16
SCL[D_DEMOD]
17
SDA[D_DEMOD] SYNC
18
ERR
19 20
SYNC
20
VALID VALID
21
MCL
21
22
D0
23
D1 MCL
24
D2 22
25
D3
26
D4
27 D0
D5 23
28
D6
29
D7
30 D1
31
24
SHIELD
D2
25
D3
26
HORIZONTAL_NIM_EMS
TU2701-*3
D4
TDFR-G135D(C)
27
NC_1
1
D5
BST_CNTL
2
28
+B1[5V]
3
NC_2[RF_AGC]
4
D6
NC_3
5
SCLT 29
6
SDAT
7
D7
NC_4
8
SIF 30
9
31
NC_5
10
VIDEO
11
GND
12
+B2[1.2V]
13
+B3[3.3V]
14
SHIELD
RESET
15
+B4[2.5V]
16
SCL
17
SDA
18
ERR
19
SYNC
20
VALID
21
MCL
22
D0
23
D1
24
D2
25
D3
26
D4
27
D5
28
D6
29
D7
30
31
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.
r ( F u l l N i m )
Copyright © 2011 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
RF_SWITCH_CTL
R2754 0
0 0 1 : F 2
OPT
R2720 0
close to TUNER
+5V_TU
C2701
C2708
0 . 1 u F
C2706
0 . 1 u F
C2704
16V
0 . 1 u F 16V
100pF
16V
OPT
50V
Q2700
2SC3052
R2700 0 OPT
OPT
C2702 close to TUNER
0 . 1 u F 16V
+3.3V_TU
+1.2V_TU
R2721
C2700 C2703 C2707
C2705 100
100pF 0 . 1 u F 0 . 1 u F
100pF
50V 16V 16V
50V
+2.5V_TUA
R2701 0
C2733
0 . 1 u F
16V
R2757
47
R2717
47
R2716
47
R2711
47
R2709
47
R2708
47
R2707
47
R2710
47
R2705
47
R2706
47
R2704
47
R2703
47
C l o s e t o t h e t u n e r
+5V_TU
R2738
0
C2718
0 . 0 1 u F
25V
OPTION : RF AGC
C2709
10uF
10V
OPT
C
R2724 0 0 1 : F 2
10K
B
IF_AGC_SEL
OPT
E
33
R2726
0 0 1 : I 4
SCL0_3.3V
33
R2727
0 0 1 : I 4
SDA0_3.3V
C2714
C2712
18pF
18pF
50V
50V
+3.3V_TU
R2723
100K
TUNER_RESET 001:G5
C2710
0 . 1 u F
16V
R2728 100
SCL2_3.3V
R2729 100
SDA2_3.3V
C2711 C2713
22pF
22pF
50V 50V
FE_TS_ERR
FE_TS_SYNC 002:D1;045:X5
FE_TS_VAL 027:AH22
045:X12
FE_TS_DATA[0-7]
FE_TS_DATA_CLK 002:D1;045:X5
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]
R2725
0
R2722
002:D1
0
FE_TS_SERIAL
OPT
L2700
BLM18PG121SN1D
Q2701
R2742
ISA1530AC1
E 10K
R2740
2.2K
B
C
C R2745
0 0 1 : F 2
Q2703 B 10K
LNA2_CTL/BOSTER_CTL
2SC3052
E
+5V_TU
R2746
470 R2749
003:A3
82
TU_SIF
E
B
ISA1530AC1
R2743 Q2704
+5V_TU C
4.7K
R2739
R2741
200 200
TU_CVBS
003:A3
E
B
Q2702
ISA1530AC1
C
+5V_TU
R2702 R2712
200 200
0 4 1 : I 7
ATV_OUT
E
B
Q2705
ISA1530AC1
C
+3.3V_TU
L2703
CIC21J501NE
C2715
22uF
16V
+3.3V_NORMAL
+3.3V_TU
L2702
60mA
CIC21J501NE
C2722
C2724
C2728 C2734
0 . 1 u F
0 . 1 u F
22uF 0 . 1 u F
16V
16V 16V 16V
+5V_TU
+5V_NORMAL
L2701
200mA
BLM18PG121SN1D
C2721
C2725 C2727 C2729
0 . 1 u F 0 . 1 u F
22uF 22uF
16V 16V
16V 16V
+3.3V_TU
IC2702
NL17SZ08DFT2G
1 5
FE_TS_VAL
C2736
0 . 1 u F
16V
2
FE_TS_ERR
R2758
47
3 4
FE_TS_VAL_ERR
C2716
100pF
50V R2731 R2756
R1
22K 18K
1%
1%
IC2701
+1.2V_TU
MP2212DN C l o s e t o I C
10K
0 1 5 : E 7 ; 0 1 5 : I 6 ; 0 0 7 : Q 1 7 ; 0 8 9 : A I 2 4
R2732
POWER_ON/OFF2_2
FB EN/SYNC
1 8
R2713
75K L2704
R2
1/8W
22uH
GND SW_2
1%
2 3A 7
NR8040T220M
IN SW_1
3 6
C2730 C2731
22uF
0 . 1 u F
16V
BS VCC
4 5 C2720
0 . 1 u F
50V
R2719 0
R2718 V o u t = 0 . 8 * ( 1 + R 1 / R 2 )
C2717
10
1uF
1/10W
10V
1%
+2.5V_TUA
+3.3V_TU
IC2700
AZ2940D-2.5TRE1
VIN VOUT
1 3
$ 0 . 1 1
2 R2744
GND 1
C2719
0 . 1 u F
C2723 C2726
16V
10uF
0 . 1 u F
10V
16V
Chameleon(EU_GP2_BCM3556)
xxLV375H-ZA 2 0 1 0 . 1 2 . 2 0
27
TUNER
LGE Internal Use Only
C2735
22uF
16V