LG LPA-172G, Service Manual

Page: 39 / 51

3-32 3-33
2. SERVO CIRCUIT DIAGRAM_1
C
MEMORY
AUDIO INTERFACE
Very Important to
reduce Noise
E B
2SB1132
1 3
HITACHI HOP120 0
2
EMI
2C54 closed to Pin18 6
VIDEO INTERFACE
IIC
C
FLASH
RS-232
DVD_KEY
RF&MEPG
SDA PW
R#
DCKE
AL
DQ3
AL
RCK
V1P4
A14
DQ14
DV33 DV33
FMSO
RFV1
8
A19
WE#
SL+
A10
SL-
FOSO
AD0
DQ0
XOO
AD4
DQ1
A7
V18
XO
LIMIT
RAS#
DQM1
APLLVD
D3
DVD_
Y
OP+
IR_OUT
CAS#
MA8
DQ7
DMSO
V1P4
A17
JITFO
MA6
A8
DQ0
TXD
V1P4
DVD_
C
TRIN
ASDAT0
DQ12
LDO2
DQ13
DQ15
A4
DVD_C
OP-
V18
DCLK
RFVDD3
MA1
AD6
DVD_5V
DVD_
KEY6
LDO1
SL-
V18
ADIN
A12
AL
A18
FMSO
CS#
DQ7
MA2
LDO_AV33
V1P4
DCLK
DQ10
DQ2
MA10
AD3
A11
DQ10
DQ3
FMO
V18
DQM0
URST#
ADIN
DQ2
URST
#
J
ITFN
F
MA6
SPDIF
V2P8
MA5
V18
GND
STBY
V20
BA1
A3
ASPDIF
RFV33
A8
RFVDD3
DQ12
MA7
SCL
DCKE
A14
OP-
A11
DV33
AR
DACVDD3
AD7
DQ6
AD1
A20
A17
CAS#
A19
XOO
LIMIT
FOO
CVBS AR
PRD#
WE#
A15
MA10
XII
DQ9
DQ1
A
MA9
A13
AD5 A12
DQ5
A1
AD7
SP-
V1P4
MA1
VREF1
PLLVDD3
OPO
AD4
DMO
A13
TRO
A2
MA4
BA1
XI
ADACVDD3
V1P4
IR_O
UT
A2
DMSO
FOO
JITFN
B
A7
SDA
A5
A9
DACVDD3
A10
TRSO
TxD
DVD_
SL
EEP
DQ5
A4
A16
SP-
A3
AD0
DQ4
PWR#
V2P8
DACVDD3 DACVDD3
DVD_Y
MA3
PCE#
DQ15
FOSO
DVD_5V
OP+
MA8
DQM0
A21
AD2
DV33
ABCK
A6
RFV33
STBY
SP+
RFVDD3
IO
A
DQ6
AD6
DV33
RAS#
PRD#
APLLVDD3
TRIN
RFVDD3
BA0
A
TRSO
MA11 MA11
A18
C
MA11
DQ13
A1
MA4
SCL
DV33
FMO
E
DV33 DV33 DV33 DV33 DV33 DV33
B
DQ11
A6
SL+
MA0
A16
RxD
DVD_
KEY4
DACVDD3
DV33
ACLK
DQ4
MA3
OPO
AD3
A15
XII
ASPDIF
RXD
PCE#
DQ14
LDO1
LDO2
AD2
ACLK
DQM1
DVD_3V3
A20
DVD_
KEY5
DQ9
AD1
D
V1P4
DMO
PL
L
V
DD3
DVD_5V
MA9
ADACVDD3
AD5
LDO_AV33
DQ11
D
DQ8
DV33
CS#
JI
T
F
O
C
DV33
CVBS
MA0
DQ8
RFVDD3
TEZISLV
MA7
A9
A0
BA0
MA5
A5
DV33
V18
MA2
SP+
TRO
RFV18
DVD_KEY4
DVD_KEY1
DVD_KEY2
DVD_KEY4
DVD_KEY1
DVD_KEY3
DVD_
KEY6
DVD_KEY3
DVD_KEY5
DVD_KEY2
DVD_KEY6
DVD_KEY5
DVD_
KEY3
DVD_KEY2
DVD_KEY1
DVD_SLEEP
ABCK
ACLK
ASDAT0
ALRCK
A21
A0
DVD_3V3
T+
MDI1
RFO
B
RFO
F-
F+
F
D
AVCC2
MDI2
V20
A
T-
V20
E
GND
LD-CD
MDI2
AVCC2
IOA
RFV33
LD-DVD
C
GND
GND
GND
MDI1
DQ0 3
CAS# 3
WE# 3
DQ14 3
RAS# 3
DQ15 3
DQ12 3
PRD# 3
DQ10 3
DQ3 3
DQ8 3
IR_OUT
6
AR 4
DVD_5V 1,4
DCKE 3
CS# 3
ASPDIF 4
DQ13 3
PWR# 3
DQ11 3
CVBS 8
V18 1
PCE# 3
AL 4
DCLK 3
DVD_Y 7
SCL 3
DVD_C 7
A1 3
DV33 1,3,
A14 3
RFV33
1
A4 3
A12 3
A2 3
A10 3
A9 3
A0 3
AD1 3
A20 3
A17 3
DQM1 3
A7 3
A15 3
A5 3
SDA 3
A13 3
MA2 3
A3 3
A11 3
AD4 3
MA0 3
AD2 3
BA0 3
AD0 3
A18 3
A8 3
MA10 3
A16 3
A6 3
MA8 3
MA5 3
AD7 3
MA3 3
AD5 3
MA1 3
AD3 3
BA1 3
DQ1 3
A19 3
MA11 3
DQ6 3
MA9 3
MA6 3
DQM0 3
MA7 3
MA4 3
AD6 3
DQ4 3
DQ9 3
DQ5 3
DQ2 3
DQ7 3
DVD_KEY6 9
DVD_KEY3 9
DVD_KEY1 9
DVD_KEY4 9
DVD_KEY2 9
DVD_KEY5 9
DVD_SLEEP 6
ASDAT0 4
ABCK 4
ACLK 4
ALRCK 4
A21 3
GND 2,3,4,5,6,7,8,9,10
DVD_3V3 1
AVCC1
AVCC1
MO_VCC
RFV33
LDO_AV33
MO_VCC
MO_VCC
DV33
2C47 1uF
2C3
22pF
2C5
0.1uF
2C83
0.1uF
2RN1 10Kx4
1 8
2 7
3 6
4 5
2C19
330pF
2C84
150pF
2C
17
0.1uF
2R4 0
2TP34
2C74
0.1uF
2R13
150K
2TP32
URST#
2L7 FB
2TP18
2L1
FB
2C43
6800pF
2C38
0.1uF
2TP20
2C29
0.1uF
2R
16
15K
2C77
0.1uF
+ 2C35
100uF/6.3V
2R20
6.8
2R11 15K
2R14
150K
2TP38
2R40
1
2TP39
+ 2C37
100uF/6.3V
2R50 10
2R41
1
2C15
1500pF
2C81
0.1uF
2TP13
2R19
1
2C68
NC
2L6 FB
2C20
330pF
2TP2
2R32
68K
2C21
0.1uF
2C75
0.1uF
2Q1
3906
1
3 2
2C58
0.1uF
2C88
0.1uF
2C41
0.1uF
MT1389D
2U1
MT1389D
MT1389D
2
210
3
4
5
1
212 213
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
216
28
27
30
29
32
31
43
26
25
33
34
35
36
42
41
45
39
40
46
38
37
65 64 62 61 60 59 58
52
81 77 76 55 74 73 72 71 63 83
53
54
70 57 82 75 66 68 80 69 56 67 84 85 86 87 88 89 90 91 92 93 94 95 106 96 97
204 205
98 99 100 101 102 103 104 105 107 108
162
161
160
159
158
157
156
155
154
153
152
151
150
149
148
147
146
145
144
143
142
141
140
139
137
138
136
135
134
133
132
131
130
129
128
126
127
125
124
123
122
121
120
118
119
117
116
115
114
113
111
112
110
109
209 215
24
214 191 190 198 197 208 207 196 211 206 203 201 202 200 199 194 195 192 184 185 182 181 180 179 186 178 177 175 173 174 164 171 170 169 168 172 167 166 165 163 193
44
47
48
49
50
51
78 79
176 183 188 189 187
DVDA
CRTPL
P
DVDB
DVDC
DVDD
AGND
OSP
OSN
DVDRFIP
DVDRFIN
MA
MB
MC
MD
SA
SB
SC
SD
CDFON
CDFOP
TNI
TPI
MDI1
MDI2
LDO2
LDO1
AVDD3
V2REFO
SGND
VREFO
V20
TEO
FEO
FG/ADIN1
RFLVL/RFON
CSO/RFOP
TEZISLV
OP_OUT
OP_INN
OP_INP
FOO
TRO
GPIO1
TROPENPWM
PWMOUT1/ADIN0
GPIO2
FMO
DMO
HIGHA4 HIGHA5 HIGHA7 DVDD3 A16 IO
W
R
#
DVDD3
IOA6
AD6 AD2 AD1 IO
A18
DVSS IOOE# IOA1 DVSS HIGHA6 ALE
IOA7
HIGHA0
IOCS# IO
A19
IO
A21
AD0 HIGHA3 HIGHA1 AD5 IO
A20
DVSS HIGHA2 DVDD1
8
AD7 A17 DVDD3 IOA0 UW
R#
URD# UP1_
2
UP1_
3
GPI
O
6
UP1_
4
UP1_
5
IR UP1_
6
DVSS
ADCVDD3
ADCVSS
UP1_
7
UP3_
0
UP3_
1
UP3_
4
UP3_
5
GPI
O
7
ICE PRST# INT0# DVDD3
ACLK
ABCK
DVSS
GPIO5
GPIO4
GPIO3
DVDD18
RA4
RA5
RA6
RA7
DVDD3
RA8
RA9
RA11
CKE
RCLK
DVSS
RA3
DVSS
RA2
RA1
RA0
RA10
BA1
DVDD3
BA0
RCS#
RAS#
DVDD18
CAS#
RWE#
DVSS
DQM1
RD8
RD10
RD9
RD11
RD12
DVDD3
RD13
RD14
DVSS
RD0
RD15
RD1
RD2
DVSS
RD3
RD4
RD6
RD5
RD7
DQM0
HRF
Z
C
IREF
SVDD3
RF
GC
RF
GND1
8
ADACGND IDACEXLP
PLLVSS
RFRPAC RFRPDC
J
ITFN
RF
GND
RFVDD3
LPFO
P
LPFIP LPFIN
LPFO
N
PLLVDD3
XTALI JI
T
F
O
RFVDD1
8
APLLCAP
APLLVSS
R B
DACVSSA
G
ADACVDD3
DACVDDA
DACVSSB
CVBS
FS
DACVSSC
ASDATA0
DACVDDC
SPDIF
MC_
DAT
A
DVDD3
VREF
ASDATA3 ASDATA2 ASDATA1
AL
RCK
XTALO
GPIO0
IOA2
DVDD18
IOA3
IOA4
IOA5
AD3 AD4
DACVDDB
APLLVD
D3
VCM
AL
AR
2L2
3.3UH
2C78
0.1uF
2TP9
2L8 FB
2U2
AT5654
1
9
10
12
3
2
15
7
14
13
21
19
20
24
27
6
4
5
28
8
11
17
18
16
23
22
25
26
29 30
VINFC
PVCC1
PGND
VOSL+
CF2
CF1
VOTK+
VNFFC
VOFC+
VOFC-
PVCC2
PGND
VNFTK
CTK2
BIAS
VOSL
VINSL+
VINSL-
STBY
VCC
VOSL-
VOLD+
VOLD-
VOTK-
VINLD
PREGND
CTK1
VINTK
G1 G2
2C76
0.1uF
TOP
2J3
HEADER 24 SMD0.5 TOP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
2R5 0
2C24
0.1uF
2R34
10k
2R31
0
2TP37
2R15
680K
2C49
0.1uF
2C1 390pF
2TP1
2C69
NC
+ 2C57
100uF/10V
2C53 OPEN
2C60
15PF(ESD)
2C8
0.1uF
+ 2C4
100uF/6.3V
2C52 1uf
2TP7
2R35 4.7
2C
28
0.047uF
2Y1 C27MHz
1 2
3
2TP8
2R17
33R
+
2C59
10uF/25V
2C45
0.1uF
2TP21
+
2C63
47uF/10V
2R37 10k
2TP35
2C26
2200pF
2L11
10uH
2R38 10k
2SW2
1 4
2 3
2TP4
2C80
0.1uF
2SW1
1 4
2 3
+
2C87
47uF/10V
2C42
0.1uF
2C73
0.1uF
2C
10
0.1uF
2C
18
1000pF
2C9
0.1uF
2TP6
2C66
NC
2R51 10
2C86
0.1uF
2C62 0.1uF
2D1
1N4148
2TP5
2C54 1uF
2TP28
2TP19
2R49 0
2R18 OPEN
2R12 10K
2C23
1pF(TDK)
2C51
1uF
+
2C39
220uF/6.3V
2C40
0.1uF
2TP11
2C72
0.1uF
2R23
10K
2C79
0.1uF
2L10
10uH
2C7 2200pF
2C71
0.1uF
2R39
1
2R33
10k
2TP31
2C25
0.01uF
2C
12
0.47uF
2TP41
+ 2C36
100uF/6.3V
2C67
NC
2C
11
20pF
2TP12
2C55
0.1uF
2R2
0
2Q6
2SB1132
1
3
2
2J2
2x1 W/HOUSING
CON2_2.0_DIP_B
1 2
2TP25
2R24 0
2C2
22pF
2TP40
2Q4
3904
1
3
2
2R
9
100K
2TP16
2R44
20K
2C34
0.1uF
2C
27
0.047uF
2TP17
2J1
4x1 W/HOUSING
1
2
3
4
+ 2C6
100uF/6.3V
2L4
10uH(10R)
R0805
2C48 1uF
2TP24
2C44
0.1uF
2C50 1uF
2TP23
2C61
0.1uF
2C65
NC
2Q5
2SB1132
1
3
2
2TP42
2R21
560
2L9
FB
2C70
NC
2R3 750K
2R48 10K
2C22
0.015uF
+
2C13
100uF/6.3V
2R7 0
2R22
10K
2C82
0.1uF
+ 2C64
47uF/10V
2TP33
+
2C14
10uF/25V
2TP22
2J4
4x1 W/HOUSING
1
2
3
4
2TP3
2C24
0.1uF
2R10 33K
2TP36
2R6 680K
2C
30
0.1uF
2R47
10K
2C
31
0.1uF
+ 2C46
220uF/6.3V
+ 2C33
100uF/6.3V
2C16
2200pF
2L3
FB
2R36 4.7
2R1 100K
2TP10
2R42
1
2L5
FB
2C85
150pF
2TP15
2R46 20K
2C
32
0.1uF
2TP14
2R43
10K
2R8 33K
+
2C25
220uF/6.3V
2R45 20K
2C56
0.1uF
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R S T