LG CU720 Black, Service Manual

Page: 160 / 204

- 161 -
LGMC
TTY DETECT
1%
END Ref
MEMORY (2Gbit 90n NAND FLASH + 1Gbit SDRAM)
Rev.1.0
rev.1.0.3
Rev.1.0
Rev.1.0.3
Rev.1.0.1
Rev.1.0.3
Audio AMP
rev.1.0.3
Rev.1.0.3
SELECT_SPK&RCV
Rev.1.0.3
Rev.1.0.3
Rev.1.0.2
Rev.1.0.2
Rev.1.0
Hook Key Logic Deleted
Rev.1.0.1
Rev.1.0.1
rev.1.0.2
C325, R326, U303, TP305, Q300, FB301
1%
MIC
(rev.E)
U301
FSA2267L10X
9
1A 1B0
1
1B1
2
1S
8
2A
6
3
2B0
4
2B1
2S
7
GND
51
0
VCC
C306
0.1u
R301
R302
2.2K
TP304
0
resistor
C320
TP305
0.01u 0.1u
C319
0.1u
C318
0.1u
C313
R323
R316
100K
0
NA
0
C326
R309
R308
0
TP308
100K
R313
VREG_MSMP_2.7V
TP307
NA
C302
22u
C301
100K
R312
TP306
R315
12ohm
C305
1u
C315 0.1u
0.1u C314
R326
0
TP301
R307
100K
TP303
TP309
TP302
TP310
R318
R320
10K
FB302
BLM15BB750SN1J
10K
BLM15BB750SN1J FB301
C316
15p
C317
C304
15p
0.01u
10K
R305
VREG_MSMP_2.7V
100K
R306
C321
0
R325
22u
0.1u
C312
0.1u
C311
C327
R319 0
NA
TPA6205A1DRBR
2
BYPASS
7
GND
IN+
3
IN-
4
9
PGND
VDD
6
5
VO+
8
VO-
_SHUTDOWN
1
U302
R317
12ohm
VSS8
R8
U2
VSS9
E6
_CAS
_CE
M9
_CS1
E5
D7
_CS2
_RAS
D5
M10
_RE
D6
_WED
_WEN
K6
_WP
L6
VCCD4
V3
V8
VCCD5
V12
VCCD6
VCCN2
K12
V4
VCCQD1
VCCQD2
V9
C6
VSS1
U6
VSS10
U10
VSS11
VSS12
U13
VSS2
F7
G2
VSS3
VSS4
G13
L13
VSS5
VSS6
P2
P13
VSS7
N11
NC89
NC9
B1
NC90
N12 N13
NC91
P7
NC92 NC93
P8
NC94
R2 R7
NC95
R9
NC96 NC97
T2 T3
NC98
T7
NC99
M2
RY__BY
VCCD1
C7
D2
VCCD2
VCCD3
D13
L1
NC74
NC75
L2
L3
NC76
NC77
L4
L5
NC78
NC79
L14
A14
NC8
NC80
M5
M6
NC81
NC82
N2
N3
NC83 NC84
N4 N5
NC85 NC86
N6 N9
NC87 NC88
N10
A12
NC6
J6
NC60
J10
NC61
J11
NC62
J12
NC63
NC64
J13
K1
NC65
NC66
K2
K3
NC67
NC68
K4
K5
NC69
NC7
A13
NC70
K10
K11
NC71
K13
NC72
NC73
K14
G5
NC45
G6
NC46
G7
NC47
G8
NC48
G9
NC49
NC5
A11
G10
NC50
H2
NC51 NC52
H3 H4
NC53
H5
NC54
H6
NC55
J2
NC56
J3
NC57
J4
NC58
J5
NC59
E12
NC30
E13
NC31
F2
NC32
F3
NC33
F4
NC34
F5
NC35
F6
NC36
F8
NC37
F9
NC38
F10
NC39
A4
NC4
F11
NC40
F12
NC41
F13
NC42
G3
NC43
G4
NC44
B14
NC16
NC17
C1
C2
NC18
NC19
C5
A2
NC2
NC20
C13
C14
NC21
D1
NC22
D14
NC23
E1
NC24
E7
NC25
E8
NC26
E9
NC27
E10
NC28
E11
NC29
NC3
A3
NC112
W11 W12
NC113 NC114
W13 W14
NC115 NC116
Y1 Y2
NC117 NC118
Y3 Y4
NC119
B4
NC12
NC120
Y11 Y12
NC121 NC122
Y13 Y14
NC123
NC13
B11
B12
NC14
NC15
B13
M12
IO9
NC1
A1
B2
NC10
T13
NC100 NC101
U1
NC102
U3 U14
NC103 NC104
V1 V2
NC105 NC106
V13 V14
NC107 NC108
W1 W2
NC109
NC11
B3
NC110
W3 W4
NC111
DQM3
U9
IO1
M11
L9
IO10
L11
IO11
K9
IO12
IO13
H13
H11
IO14
H9
IO15
G11
IO16
IO2
M13
IO3
L10
IO4
L12
IO5
J9
H12
IO6
H10
IO7
G12
IO8
DQ26
R10
P11
DQ27
R11
DQ28
DQ29
P12
DQ3
V5
DQ30
R12
R13
DQ31
DQ4
U5
DQ5
T6
V6
DQ6
DQ7
U7
T9
DQ8
DQ9
T10
U8
DQM0
DQM1
T8
DQM2
V7
T11
DQ11
DQ12
U11
DQ13
V11
DQ14
T12
U12
DQ15
P3
DQ16
R3
DQ17
DQ18
P4
DQ19
R4
T5
DQ2
P5
DQ20
R5
DQ21
DQ22
P6
DQ23
R6
P9
DQ24
DQ25
P10
E2
A3
D12
A4
C12
A5
A6
D11
A7
C11
D10
A8
C10
A9
ALE
M3
C4
BA0
D4
BA1
D8
CKE
M4
CLE
C8
CLK
U4
DQ0
DQ1
T4
V10
DQ10
TYA000BC00HOGG
U303
A0
C3
A1
D3
E4
A10
A11
D9
A12
C9
A2
E3
C310
0.1u
C308
0.1u
C309 C307
0.1u
G1
2
3
G2
1
O
4
P
0.1u
MIC301
SPM0204HE5-PB-3
100K
R322
EBI2_DATA(0:15)
EBI2_DATA(0)
EBI2_DATA(1)
EBI2_DATA(2)
EBI2_DATA(3)
EBI2_DATA(4)
EBI2_DATA(5)
EBI2_DATA(6)
EBI2_DATA(7)
EBI2_DATA(8)
EBI2_DATA(9)
EBI2_DATA(10)
EBI2_DATA(11)
EBI2_DATA(12)
EBI2_DATA(13)
EBI2_DATA(14)
EBI2_DATA(15)
MIC1N
MIC1P
MICBIAS
SDRAM_ADDR(0)
SDRAM_ADDR(1)
SDRAM_ADDR(2)
SDRAM_ADDR(3)
SDRAM_ADDR(4)
SDRAM_ADDR(5)
SDRAM_ADDR(6)
SDRAM_ADDR(7)
SDRAM_ADDR(8)
SDRAM_ADDR(9)
SDRAM_ADDR(10)
SDRAM_ADDR(11)
SDRAM_ADDR(12)
SDRAM_DQM(0)
SDRAM_DQM(1)
SDRAM_DQM(2)
SDRAM_DQM(3)
SDRAM_RAS_N
SDRAM_CAS_N
RESOUT_EBI2_N
EBI2_WE_N
SDRAM_WE_N
SDRAM_CLK
SDRAM_ADDR(13)
SDRAM_ADDR(14)
NAND_ALE
NAND_CLE
NAND_CS_N
EBI2_OE_N
NAND_READY
SDRAM_CLK_EN
SDRAM_CS_N(0)
SDRAM_DATA(1)
SDRAM_DATA(2)
SDRAM_DATA(3)
SDRAM_DATA(4)
SDRAM_DATA(5)
SDRAM_DATA(6)
SDRAM_DATA(7)
SDRAM_DATA(8)
SDRAM_DATA(9)
SDRAM_DATA(10)
SDRAM_DATA(11)
SDRAM_DATA(12)
SDRAM_DATA(13)
SDRAM_DATA(14)
SDRAM_DATA(15)
SDRAM_DATA(16)
SDRAM_DATA(17)
SDRAM_DATA(18)
SDRAM_DATA(19)
SDRAM_DATA(20)
SDRAM_DATA(21)
SDRAM_DATA(22)
SDRAM_DATA(23)
SDRAM_DATA(24)
SDRAM_DATA(25)
SDRAM_DATA(26)
SDRAM_DATA(27)
SDRAM_DATA(28)
SDRAM_DATA(29)
SDRAM_DATA(30)
SDRAM_DATA(31)
SDRAM_ADDR(0:12)
LINE_OP
+VPWR
LINE_ON
SPK_AMP_EN
TTY_ADC_DET EAR_MIC2P
RCV+
RCV-
SPK_EN
+VPWR
SPK_RCV-
MICBIAS
MIC2P
VREG_MSME_1.8V
SDRAM_DATA(0:31)
SDRAM_DATA(0)
7. CIRCUIT DIAGRAM
LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Z3X-BOX.COM