LG 47LE7500, Service Manual

Page: 26 / 52

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.
+3.3V_TU
IF_AGC_SEL
Q2601
ISA1530AC1
E
B
C
R2604 0 INT_DEMOD
TU_SIF
R2602 0
R2623
10K
C2600
100pF
50V
R2608
10K
OPT
C2605
100pF
50V
R2621
10K
C2607
0.1uF
16V
LNA2_CTL/BOSTER_CTL
C2610
0.1uF
16V
R2606
100
Q2602
ISA1530AC1
E
B
C
R2622
4.7K
R2615
0
R2600 0
OPT
R2612 100
NIM
TU_CVBS
C2603
0.1uF
16V
+5V_TU
IF_P_EXT
C2608
0.1uF
16V
OPT
R2611 100
NIM
C2606
0.1uF
16V
C2602
0.1uF 16V
R2616
200
R2605 0
TUNER_RESET
+5V_TU
Q2600
2SC3052
OPT
E
B
C
C2604
100pF
50V
IF_AGC
R2626
82
R2601 0
C2609
10uF
10V
OPT
C2613
0.01uF
25V
R2607
100K
+1.2V_TU
+5V_TU
Q2604
2SC3052
E
B
C
+5V_TU
L2600
BLM18PG121SN1D
R2613 0
Q2605
ISA1530AC1
E
B
C
IF_N_EXT
TU_IF_N_BCM
C2601
0.1uF
16V
+3.3V_TU
R2625
470
TU_IF_P_BCM
R2619
200
R2603 0
INT_DEMOD
R2614
1K
OPT
RF_SWITCH_CTL
R2618
2.2K
C2622
0.1uF
16V
+3.3V_TU
C2626
22uF
10V
C2620
0.1uF
16V
C2625
22uF
10V
+3.3V_NORMAL
L2603
BLM18PG121SN1D
+5V_TU
C2623
0.1uF
16V
C2621
0.1uF
16V
+5V_NORMAL
L2604
CIC21J501NE
R2641
510
R2632
3.9K
1/16W
5%
TU_IF_N_1
R2624
3.9K
1/16W
5%
R2642
510
READY
R2633
2K
1/16W
5%
TU_IF_AGC_2
TU_IF_P_1
C2629
0.01uF
A3.3V
R2638
220
1/16W
5%
TU_IF_N_BCM
C2631 0.01uF
TU_IF_AGC_BCM
C2632 0.01uF
+5V_NORMAL
TU_IF_P_BCM
C2627 0.01uF
TU_IF_AGC_1
C2614
0.1uF
16V
+1.2V_TU
C2615
10uF
10V
R2627
1.2K
IC2600
AZ1117H-ADJTRE1(EH11A)
2
OUTPUT
3
INPUT
1
ADJ/GND
GND
R2628
10
C2616
0.1uF
16V
R2629
1
+3.3V_TU
C2633
0.1uF
16V
TU2600
TDTR-T055F
Taiwan/Brazil_V
14
+B3[3.3V]
13
+B2[1.2V]
5
AS
12
GND
11
VIDEO
2
BST_CNTL
10
NC
4
NC[RF_AGC]
1
ANT_PWR[OPT]
17
DIF_1[N]
9
SIF
8
NC(IF_TP)
3
+B[5V]
16
IF_AGC_CNTL
7
SDA
6
SCL
15
RESET
18
DIF_2[P]
19
SHIELD
TU2600-*3
TDTJ-S031D
AU_Asia_Tuner_V
14
3.3V
13
1.2V
5
AS
12
GND
11
VIDEO
2
BST_CNTL
10
NC
4
NC[RF_AGC]
1
ANT_PWR[OPT]
17
DIF_1
9
SIF
8
NC(IF_TP)
3
+B
16
IF_AGC_CNTL
7
SDA
6
SCL
15
RESET
18
DIF_2
19
SHIELD
TU2600-*4
TDTJ-S001D
AU_Asia_Tuner_H
14
3.3V
13
1.2V
5
AS
12
GND
11
VIDEO
2
BST_CNTL
10
NC
4
NC[RF_AGC]
1
ANT_PWR[OPT]
17
DIF_1
9
SIF
8
NC[IF_TP]
3
+B
16
IF_AGC_CNTL
7
SDA
6
SCL
15
RESET
18
DIF_2
19
SHIELD
R2643
1K
OPT
R2644 0
OPT
TU2600-*5
TDTR-T035F
Taiwan/Brazil_H
14
+B3[3.3V]
13
+B2[1.2V]
5
NC_2
12
GND
11
VIDEO
2
BST_CTL
10
NC_4
4
NC_1[RF_AGC]
1
RF_S/W_CTL
17
DIF_1[N]
9
SIF
8
NC_3
3
+B1[5V]
16
IF/AGC
7
SDAT
6
SCLT
15
RESET
18
DIF_2[P]
19
SHIELD
TU2600-*1
TDVJ-H031F
Latin_Tuner_V
14
3.3V
13
1.2V
5
AS
12
GND
11
VIDEO
2
BST_CNTL
10
NC
4
NC[RF_AGC]
1
ANT_PWR[OPT]
17
DIF_1
9
SIF
8
NC(IF_TP)
3
+B
16
IF_AGC_CNTL
7
SDA
6
SCL
15
RESET
18
DIF_2
19
SHIELD
TU2600-*2
TDVJ-H001F
Latin_Tuner_H
14
3.3V
13
1.2V
5
AS
12
GND
11
VIDEO
2
BST_CNTL
10
NC
4
NC[RF_AGC]
1
ANT_PWR[OPT]
17
DIF_1
9
SIF
8
NC(IF_TP)
3
+B
16
IF_AGC_CNTL
7
SDA
6
SCL
15
RESET
18
DIF_2
19
SHIELD
L2605
BLM18PG121SN1D
C2634
10uF
10V
C2635
10uF
10V
C2636
22uF
10V
C2637
0.1uF
16V
SDA0_3.3V
C2638
20pF
50V
TUNER_I2C_LPF
L2609-*1
33
NON_TUNER_I2C_LPF
C2639
20pF
50V
TUNER_I2C_LPF
L2610-*1
33
NON_TUNER_I2C_LPF
C2611
62pF
50V
TUNER_I2C_LPF
L2609 TUNER_I2C_LPF 270nH
SCL0_3.3V
C2612
62pF
50V
TUNER_I2C_LPF
L2610 TUNER_I2C_LPF 270nH
C2612-*1
18pF
50V
NON_TUNER_I2C_LPF
C2611-*1
18pF
50V
NON_TUNER_I2C_LPF
C2624
10uF
16V
Tuner (Half Nim)
GP2_BCM Ver. 1.0
28
CAN H-NIM/NIM TUNER for TAIWAN
close to TUNER
OPTION : RF AGC
close to TUNER
60mA
200mA
IF AGC FILTER
IF FILTER OPTION
CAUTION : Closed BCM IC(IC100)
R2
R1
V_OUT=V_REF(1+R2/R1)
For ESD
close to TUNER
close to TUNER