LG 42LD465 Service Manual page 32

LGIT CAN H/N TUNER for US&KOR&BRAZIL&TAIWAN&AUS
RF_S/W_CTL
1
BST_CTL
2
+B1[5V]
3
NC_1[RF_AGC]
4
NC_2
5
SCLT
6
SDAT
7
NC_3
8
SIF
9
NC_4
10
VIDEO
11
GND
12
+B2[1.2V]
13
+B3[3.3V]
14
RESET
15
IF/AGC
16
DIF_1[N]
17
DIF_2[P]
18
19
SHIELD
TU5001-*1
TDTR-T035F
NTSC_2INPUT_H_LGIT
ANT_PWR[OPT]
1
BST_CNTL
2
+B
3
NC[RF_AGC]
4
AS
5
DVB_1INPUT_H_LGIT
SCL
6
SDA
7
TU5001
NC(IF_TP)
8
SIF
9
NC TDTJ-S001D
10
VIDEO
11
GND
12
1.2V
13
3.3V
14
RESET
15 ANT_PWR[OPT]
IF_AGC_CNTL
16
1
DIF_1
17
DIF_2
18 RF_S/W_OPT
BST_CNTL
2
19
SHIELD
+B
3
TU5001-*2
R5001
TDVJ-H031F NC[RF_AGC]
4
NTSC_1INPUT_V_LGIT
RF_AGC_OPT
AS
5
SCL
ANT_PWR[OPT]
1 6
BST_CNTL
2
+B
3
SDA
NC[RF_AGC]
4 7
AS
5
SCL
6
NC[IF_TP]
SDA
7 8
NC(IF_TP)
8
SIF
9
SIF
NC
10 9
VIDEO
11
GND
12
NC
1.2V
13 10
3.3V
14
RESET
15
VIDEO
IF_AGC_CNTL
16 11
DIF_1
17
DIF_2
18 GND
12
19
SHIELD
1.2V
13
TU5001-*3
3.3V
TDVJ-H001F
14
NTSC_1INPUT_H_LGIT
RESET
15
IF_AGC_CNTL
16
NTSC_1INPUT_H_SANYO
TU5001-*4
DIF_1
UCA36AL
17
NC_1
1
DIF_2
NC_2
2
GND_1 18
3
+5V[MAIN]
4
NC_3[RF_AGC]
5
NC_4[VT]
6
19
GND_2
7
SDA
8
SCL
9
SHIELD
AS
10
NC_5
11
D_IF1
12
D_IF2
13
IF_AGC
14
+5V[VIF]
15
SIF
16
NC_6[AFT]
17
NC_7
18
VIDEO
19
20
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.
OPTION : RF S/W
RF_SWITCH_CTL
C5002
0.1uF
16V
RF_S/W_OPT
Pull-up can't be applied
because of MODEL_OPT_2
+5V_TU
R5002
0
C5003
C5001
0.1uF
100pF
16V
50V
0
+3.3V_TU
+1.2V/+1.8V_TU
C5006
C5007
100pF
0.1uF
50V
16V
0
R5003
+3.3V_TU
C5031
0.1uF
16V
+5V_TU
OPTION : BOOSTER
L5001
MLB-201209-0120P-N2
BOOSTER_OPT
R5014 R5019
10K
0
BOOSTER_OPT BOOSTER_OPT
E
R5017
Q5001
2.2K
ISA1530AC1
BOOSTER_OPT B BOOSTER_OPT
C
R5021
C
10K
BOOSTER_OPT
Q5002 B
2SC3052
BOOSTER_OPT
C5011
E
0.01uF
25V
BOOSTER_OPT
+3.3V_TU
R5018
1.2K R5020
33 R5015 1.2K
33 R5016
C5012 C5013
18pF 18pF
50V 50V
+3.3V_TU
R5011
R5009
100K
100
TUNER_RESET
C5010
0.1uF
16V
NON_DEMOD_OPT
0
R5034
IF_N_MSTAR
NON_DEMOD_OPT
R5035 0
IF_P_MSTAR
R5006 100
DEMOD_OPT
R5007 100
DEMOD_OPT
IC5001
AZ1117H-ADJTRE1(EH11A)
+1.2V/+1.8V_TU
R5036
10
INPUT ADJ/GND
3 1
2
OUTPUT
R5038
1.2K
R5033
1
C5029
10uF
10V
C5026
0.1uF
16V
RF_AGC_OPT
LNA2_CTL
The pull-up/down of LNA2_CTL
is depended on MODLE_OPT_1.
GPIO must be added for FE_BOOSTER_CTL
C5025
0.1uF 16V
TU_SCL
TU_SDA
0
R5024
R5022
1K
IF_AGC
C5016
0.1uF
should be guarded by ground
16V
OPT
Close to the tuner
IF_N_EXT
IF_P_EXT
+5V_Normal
+5V_TU
L5002
200mA
BLM18PG121SN1D
C5018 C5019 C5021 C5023
C5028
22uF 22uF 0.1uF 0.1uF
0.1uF
16V
16V 16V 16V
16V
OPT
+3.3V_Normal
+3.3V_TU
L5003
60mA BLM18PG121SN1D
C5017 C5022 C5024
C5020
22uF 0.1uF
22uF 0.1uF
16V 16V
16V
16V
OPT
GP2_Saturn7M
ATSC_CAN TUNER
OPTION : RF AGC
C5027
10uF
10V
RF_AGC_OPT
C
R5028
10K
Q5003 B GPIO must be added.
IF_AGC_SEL
2SC3052
RF_AGC_OPT
RF_AGC_OPT
E
+5V_TU
R5029
470
R5032
82
TU_SIF
E
B
ISA1530AC1
R5025 Q5004
C
4.7K
+5V_TU
R5026
1K
R5030 R5031
OPT
220 220
NON_TU_CVBS_BYPASS
R5039
0
TU_CVBS
TU_CVBS_BYPASS
E
NON_TU_CVBS_BYPASS
B Q5005
R5027 ISA1530AC1
C
1K
OPT
*Change History.
Ver 1.0 --> 1.1:Change of chip type, 091019, w.s.jeong
Ver 1.1 --> 1.2:Change of chip type, Add of Tuner P/N for NTSC_1INPUT 091116, w.s.jeong
1.De-reting
1) R5029,R5030,R5031 : 1005 Type ==> 1608 Type(w.s.Jeong_1019)
2) R5030,R5031 : 200/1608 Type ==> 220/2012 Type(w.s.Jeong_1116)
2.ADD of TUNER P/N (w.s.Jeong_1116)
CONTROL_ATTEN
This was being applied to the only china demod,
so this has to be deleted in both main and ISDB sheet.
Ver. 1.1
26