Main - Front End Circuit Diagram - LG BP340 Service Manual

9. MAIN - FRONT END CIRCUIT DIAGRAM

12
KEM-480AAA
RFO+,RFO-,INA,INB,INC,IND signal trace length should <6cm
11
1 TILT-
1 TILT- TILT-
2 TILT+
2 TILT+ TILT+
3 TR-
3 TR- TR-
4 TR+
4 TR+ TR+
5 FR-
FR- FR-
5
10 6 FR+
FR+ FR+
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16 FPDODVD
16
17
9 FEGIO7
17
18 LDD_SEN LDD_SEN LDD_SEN
18
19 LDD_CLK LDD_CLK LDD_CLK
19
20 LDD_SDIO LDD_SDIO LDD_SDIO
20
21
21
22
22
23
NC R102 R102 0 0
23
24 FEGIO5 FEGIO5 FEGIO5
24
25 FEGAINSW1
25
26
26
27 RFO- RFO- RFO-
27
28 RFO+ RFO+ RFO+
8
28
29 S80_VCC_PDIC
29
30
30
31 INE INE INE
31
32 INB INB INB
32
33 IND IND IND
33
34 INF INF INF
34
35 INH INH INH
35
36 INC
INC INC
36
37 INA INA INA
37
38 ING ING ING
38
39 HAVC
7 39
40 AUX1
40
41
41
42 CO_B+
CO_B+ CO_B+
42
43 CO_B- CO_B- CO_B-
43
44 CO_A+ CO_A+ CO_A+
44
XP5 XP5 45 CO_A- CO_A- CO_A-
45
45PIN/0.5MM 45PIN/0.5MM
6
U9 U9
VCC_BD_LD AS1117 AS1117
R107 R107 0 0 8.2V_BD_LD 2 3
output input
5 C107 C107 C108 C108 4
Vout
0.1uF/16V/X7R 0.1uF/16V/X7R 4.7uF 4.7uF
R108 R108 140/1% 140/1%
R109 R109
750/1% 750/1%
4
12V_BD
3
LDO_9VG R117 R117 1K 1K
G
Q9 Q9
C149 C149
NC/N_2N7002 NC/N_2N7002
2
220nF 220nF
R118 R118
NC/7.5K/1% NC/7.5K/1%
LDO_FB
R119 R119
NC/1.3K/1% NC/1.3K/1%
1
A B C D
V14REF
C148 C148
2.2UF 2.2UF
HAVC
C150 C150
C147 C147
2.2UF 2.2UF
4.7UF/10V/X5R 4.7UF/10V/X5R
S80_VCC_LD
VCC_BD_LD
RFO-
C136 C136 0.1uF/16V/X7R 0.1uF/16V/X7R
RFO+ C137 C137 0.1uF/16V/X7R 0.1uF/16V/X7R
C100 C100
0.1uF/16V/X7R 0.1uF/16V/X7R
S80_VCC_PDIC
R100 R100
47K/1% 47K/1%
R104 R104
33K/1% 33K/1%
A3.3V
R103 R103
10K 10K
C103 C103
0.1uF/16V/X7R 0.1uF/16V/X7R
C104 C104
0.1uF/16V/X7R 0.1uF/16V/X7R
+12V_D
12V_BD R120 R120 0 0
C109 C109
4.7uF 4.7uF
8.2V_BD_LD
E F G H
U1F U1F
A1.2V
V14REF H3 K5 AVDD12_1
V14 AVDD12_1
FVREF B4 J4
FVREF AVDD12_2
HAVC E4
HAVC
TRINA A2
TRINA
TRINB B3
TRINB
A1 H5
TRINC AGND12_1
B2 H7
TRIND AGND12_2
INA C3
INA
INB B1
INB
INC C2
INC
IND C1
IND
INE E2 E3 AVDD33_1
INE AVDD33_1
INF E1 J6 AVDD33_3
INF AVDD33_3
ING D1
ING
INH D2
INH
F6
AGND33_1
F7
AGND33_3
FPDODVD C4 K7
FPDODVD AGND33_2
FPDOCD A3
FPDOCD
RFIN G2
RFIN
RFIP G1
RFIP
RFIP2 H1
RFIP2
RFIN2 H2 R1 FEFG
RFIN2 FEFG
LDD_SDIO L4 F5 AUX1
FECFREQ AUX1
K3 E5
LDD_CLK VDAC0
FEOSCEN VDAC0
LDD_SEN L3 A4 VWDC3O
FECMOD VWDC3O
FEGAINSW1 L2 C6 VWDC2O
FEGAINSW1 VWDC2O
FEGAINSW2 M2
FEGAINSW2
GAINSW3 L1
FEGAINSW3
TPIC_FMO1 N1 F4 MPXOUT1
FEFMO MPXOUT1
N2 F2
TPIC_FMO2 MPXOUT2
FEFMO2 MPXOUT2
FEFMO3 N3 F1 MPXOUT3
FEFMO3 MPXOUT3
FEFMO4 M3
FEFMO4
FEDMO P3
FEDMO
TPIC_TYPWM P2
FETRAYPWM
TLO J3 T1 FEEJECT_
TLO FEEJECT_
TRO J2 U4
TRO FETRAYOUT_
FOO H4 T2 FETRAYIN_
FOO FETRAYIN_
TPIC_MUTE1 R2 A3.3V
FEGIO0
FEGIO1 R3 EN
FEGIO1
FEGIO3 U2
FEGIO3
FEGIO4 R6
FEGIO4
FEGIO5 N5 R147 R147 R148 R148
FEGIO5
FEGIO6 N7 NC/2K NC/2K 2K 2K
FEGIO6
FEGIO7 N6
FEGIO7
FEGIO9 R5 E6 RSTI
FEGIO9 RSTI
FEGIO10 URXD T3
FEGIO10
FEGIO11 UTXD U1 R151 R151
FEGIO11 C146 C146
10K 10K
0.1uF/16V/X7R 0.1uF/16V/X7R
MT8551 MT8551
AVCC
VCC_D S80_VCC_LD S80_VCC_PDIC
FB4 FB4
0 0
C133 C133 C111 C111 C110 C110 C112 C112 C113 C113
NC/10UF NC/10UF 10UF 10UF 0.1uF/16V/X7R 0.1uF/16V/X7R 0.01uF/50V/X7R 0.01uF/50V/X7R 100pF/50V/NP0 100pF/50V/NP0
I J K L M
3-29 3-30
A3.3V
EN 3,6
A3.3V
3.3V
A1.2V 1.2V
C167 C167 C182 C182 C178 C178
C207 C207
10UF 10UF 0.1uF/16V/X7R 0.1uF/16V/X7R 10UF 10UF 4.7UF/10V/X5R 4.7UF/10V/X5R
N O P Q
FEGIO10
TP41 TP41
FEGIO11
TP42 TP42
FE RS232 PORT
BOTTOM LAYOUT
TRINA TRINA TRINA
TRINB
TRINB TRINB
FPDODVD FPDODVD FPDODVD
VDAC0 VDAC0 VDAC0
VWDC2 VWDC2 VWDC2O
VWDC3O VWDC3O VWDC3O
FEGAINSW2 FEGAINSW2 FEGAINSW2
GAINSW3 GAINSW3 GAINSW3
FEEJECT_ FEEJECT_ FEEJECT_
MPXOUT1 MPXOUT1 MPXOUT1
MPXOUT2 MPXOUT2 MPXOUT2
MPXOUT3 MPXOUT3 MPXOUT3
TLO TLO TLO
TRO TRO TRO
FOO FOO FOO
FEDMO FEDMO FEDMO
FEFMO4 FEFMO4 FEFMO4
FEFMO3
FEFMO3 FEFMO3
FPDOCD FPDOCD FPDOCD
FEGIO1 FEGIO1 FEGIO1
FEGIO3 FEGIO3 FEGIO3
FEGIO6 FEGIO6 FEGIO6
FEGIO9 FEGIO9 FEGIO9
RFIP2
RFIP2 RFIP2
RFIN2 RFIN2 RFIN2
GAINSW3
10
GAINSW3
FEFG
TPIC_FG 10
FEGIO4
TPIC_GIO4 10
TPIC_FMO2
TPIC_FMO2 10
TPIC_FMO1
TPIC_FMO1 10
TPIC_MUTE1
10
TPIC_MUTE1
FETRAYIN_
10
TPIC_TRAYIN#
TPIC_TYPWM
TPIC_TYPWM 10
FR+
FR+ 10
FR-
FR- 10
TILT-
10
TILT-
TILT+
10
TILT+
TR+
TR+ 10
TR-
TR- 10
CO_B-
CO_B- 10
CO_B+
10
CO_B+
CO_A+
10
CO_A+
CO_A-
CO_A- 10
LDO_FB
LDO_FB 10
LDO_9VG
10
LDO_9VG
R S T