LG 32LN549C Service Manual page 33

GP4R_GLOBAL_TUNER_BLOCK
TU1001
TDSN_B001F
SI2176_BR_2INPUT_H
RF_S/W_CTL
1
C1001
RESET 0 . 1 u F
2 16V
SCL
3
SDA
4
+B1[3.3V]
5
SIF
6
+B2[1.8V]
7
CVBS
8
NC_1
9
NC_2
10
NC_3
11
FULL_NIM
+B3[3.3V]
L1001
+1.23V_TU
12
B1
120
+B4[1.23V]
13
C1002
NC_4
0 . 1 u F
14
16V
FULL_NIM
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
B1 A1
B1 A1
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 © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
TU1002-*1
RF_SWITCH_CTL TDSS-H101F
P u l l - u p c a n ' t b e a p p l i e d
because of MODEL_OPT_2
NC
1
RESET
2
SCL
3
SDA
4
TU1002
+B1[3.3V]
5
SIF
TDSS-G102D 6
+B2[1.8V]
7
SI2176_DVB_1INPUT_H CVBS
8
IF_AGC
9
D I F [ P ]
10
DIF[N]
11
B1 A1
B1 A1
12
SHIELD
NC
1
RESET
2
SCL
3
SDA
4
+B1[3.3V]
5
SIF
6
+B2[1.8V]
7
CVBVS
8
IF_AGC
9
D I F [ P ]
10
DIF[N]
11
A1
B1 A1
C1003
100pF
50V
12
SHIELD
FE_TS_SYNC
FE_TS_VAL_ERR
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]
+3.3V_TU
R1008
100
C1004-*1
0
ASIA
C1004 close to TUNER
0 . 1 u F 16V
NON_ASIA
+3.3V_TU
C1011
C1009
+1.2V/+1.8V_TU 0 . 1 u F
100pF
C1008
16V
50V
10uF
6.3V
C1005 C1006
0 . 1 u F 22uF
c l o s e t o t h e t u n e r p i n , a d d , 0 9 0 2 9
16V 25V
R1007 100
NON_BR
NON_BR
C1012
0 . 1 u F
16V
NON_BR
R1002 0
R1003 0
NON_BR
C l o s e t o t h e t u n e r
+3.3V_TU
IC1001
AZ1117BH-1.8TRE1
FE_TS_DATA[0-7]
IN OUT
3 2
1
ADJ/GND
IC1002
AP2132MP-2.5TRG1
R1005 10K PG
1
FULL_NIM_BCD
FULL_NIM_OPT
EN
2
VIN
3
VCTRL
+5V_Normal 4
R1006
0
FULL_NIM_BCD
R1010
100K
TUNER_RESET
+3.3V_TU
C1014
0 . 1 u F
16V
R1019
1K R1022
33
R1015 1K
TU_SCL
33 R1014
TU_SDA
C1019
C1016
18pF
18pF
50V
50V
NON_ASIA R1023
NON_ASIA R1024
C1017 C1020
5pF 5pF
50V 50V
ASIA ASIA
R1020
3 . 3
R1018
ASIA
2K
OPT
IF_AGC_MAIN
R1017 R1021
0 0
s h o u l d b e g u a r d e d b y g r o u n d
ASIA ASIA
+1.2V/+1.8V_TU
R1009
1
1/16W
60mA
C1013 C1015
0 . 1 u F
10uF
16V
10V
a d d , 0 9 2 9
[ E P ]
+1.23V_TU
380mA
GND
8
FULL_NIM_BCD FULL_NIM_BCD
R1012 R1013
ADJ
11K 10K
7
R1
VOUT
6
NC
FULL_NIM_BCD
5 C1018
0 . 1 u F
R1011
16V
20K
FULL_NIM
1005
R2
BCD Vo=0.6*(1+R1/R2)
T J V o = 0 . 8 * ( 1 + R 1 / R 2 )
LA2AW
TUNER
+3.3V_TU
R1030
TU_BUFFER
470
R1032
82
TU_SIF
E
TU_BUFFER
MMBT3906(NXP)
B
Q1002
C
R1027
4.7K
TU_BUFFER
+3.3V_TU
TU_BUFFER TU_BUFFER
R1031
R1029
220 220
0
TU_CVBS
0
IF_N_MSTAR
IF_P_MSTAR
1 . s h o u l d b e g u a r d e d b y g r o u n d
2 . N o v i a o n b o t h o f t h e m
3 . S i g n a l W i d t h > = 1 2 m i l s
S i g n a l t o S i g n a l W i d t h = 1 2 m i l s
G r o u n d W i d t h > = 2 4 m i l s
+3.3V_TU +3.3V_Normal
S i z e c h a n g e , 0 9 2 9
L1003
MLB-201209-0120P-N2
C1024 C1025 C1026
C1027
22uF 0 . 1 u F 22uF 0 . 1 u F
10V 16V 10V 16V
2 0 1 2 . 0 9 . 1 1
10
LGE Internal Use Only