LG CU405 Service Manual page 134

7. CIRCUIT DIAGRAM
SDRAM_DATA(0:31)
TP300
SDRAM_DATA(0)
U4
DQ0
SDRAM_DATA(1)
T4
DQ1
SDRAM_DATA(2)
T5
DQ2
SDRAM_DATA(3)
V5
DQ3
SDRAM_DATA(4)
U5
DQ4
SDRAM_DATA(5)
T6
DQ5
SDRAM_DATA(6)
V6
DQ6
SDRAM_DATA(7)
U7
DQ7
SDRAM_DATA(8)
T9
DQ8
SDRAM_DATA(9)
T10
DQ9
SDRAM_DATA(10)
V10
DQ10
SDRAM_DATA(11)
T11
DQ11
SDRAM_DATA(12)
U11
DQ12
SDRAM_DATA(13) V11
DQ13
SDRAM_DATA(14)
T12
DQ14
SDRAM_DATA(15)
U12
DQ15
SDRAM_DATA(16)
P3
DQ16
SDRAM_DATA(17)
R3
DQ17
SDRAM_DATA(18)
P4
DQ18
SDRAM_DATA(19)
R4
DQ19
SDRAM_DATA(20)
P5
DQ20
SDRAM_DATA(21)
R5
DQ21
SDRAM_DATA(22)
P6
DQ22
SDRAM_DATA(23)
R6
DQ23
SDRAM_DATA(24)
P9
DQ24
SDRAM_DATA(25)
P10
DQ25
SDRAM_DATA(26)
R10
DQ26
SDRAM_DATA(27)
P11
DQ27
SDRAM_DATA(28)
R11
DQ28
SDRAM_DATA(29)
P12
DQ29
SDRAM_DATA(30)
R12
DQ30
SDRAM_DATA(31)
R13
DQ31
U8
TP310
SDRAM_DQM(0) DQM0
T8
SDRAM_DQM(1) DQM1
V7
SDRAM_DQM(2) DQM2
U9
SDRAM_DQM(3) DQM3
EBI2_DATA(0:7)
EBI2_DATA(0)
M11
IO1
EBI2_DATA(1)
M13
IO2
EBI2_DATA(2)
L10
IO3
EBI2_DATA(3)
L12
IO4
EBI2_DATA(4)
J9
IO5
EBI2_DATA(5)
H12
IO6
EBI2_DATA(6) H10
IO7
EBI2_DATA(7)
G12
IO8
A1
NC1
A2
NC2
A3
NC3
A4
NC4
A11
NC5
A12
NC6
A13
NC7
A14
NC8
B1
NC9
B2
NC10
B3
NC11
B4
NC12
B11
NC13
B12
NC14
B13
NC15
B14
NC16
C1
NC17
C2
NC18
C5
NC19
C13
NC20
C14
NC21
D1
NC22
D14
NC23
E1
NC24
E7
NC25
E8
NC26
E9
NC27
E10
NC28
E11
NC29
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
MEMORY
SDRAM_ADDR(0)
C3 TP301
A0
SDRAM_ADDR(1)
D3
A1
SDRAM_ADDR(2)
E3
A2
SDRAM_ADDR(3)
E2
A3
SDRAM_ADDR(4)
D12
A4
SDRAM_ADDR(5)
C12
A5
SDRAM_ADDR(6)
D11
A6
SDRAM_ADDR(7)
C11
A7
SDRAM_ADDR(8)
D10
A8
SDRAM_ADDR(9)
C10
A9
SDRAM_ADDR(10)
E4
A10
SDRAM_ADDR(11)
D9
A11
SDRAM_ADDR(12)
C9
A12
R304 100K
L6
_WP RESOUT_EBI2_N
K6
_WEN EBI2_WE_N
TP302
D5
_RAS SDRAM_RAS_N
D6 TP303
_WED SDRAM_WE_N
E6 TP304
_CAS SDRAM_CAS_N
C8
CLK SDRAM_CLK
E5 TP305
_CS SDRAM_CS_N(0)
M3 TP306
ALE NAND_ALE
M4 TP307
CLE NAND_CLE
M9
_CE
M10 TP308
_RE EBI2_OE_N
M2
RY__BY
D8 TP309
CKE SDRAM_CLK_EN
C4
BA0 SDRAM_ADDR(13)
D4
BA1 SDRAM_ADDR(14)
C7
VCCD1
D2
VCCD2
D13
VCCD3
V3
VCCD4
V8
U302
VCCD5
V12
VCCD6
TY90009800COGG
V4
VCCQD1
V9
VCCQD2
K12
VCCN2
C6
VSS1
F7
VSS2
G2
VSS3
G13
VSS4
L13
VSS5
P2
VSS6
P13
VSS7
R8
VSS8
U2
VSS9
U6
VSS10
U10
VSS11
U13
VSS12
D7
NC132
J12
NC131
K4
NC71
K5
NC72
K9
NC73
K10
NC74
K11
NC75
K13
NC76
K14
NC77
L1
NC78
L2
NC79
L3
NC80
L4
NC81
L5
NC82
L9
NC83
L11
NC84
L14
NC85
M5
NC86
M6
NC87
M12
NC88
N2
NC89
GND300 GND301 GND302 GND303
- 135 -
D300
CON300
2 33u C302
SDRAM_ADDR(0:12)
5 R300 51
4
1
33u C303
3
R302 51
KJA-PH-0-0134
ENJE0003105 6
VREG_MSMP_2.6V
TTY_ADC_DET
NAND_CS_N
NAND_READY
VREG_MSME_1.8V
SUMY0010512
VREG_MSMP_2.6V
OSF211-42D
1
2
MIC300
Speaker AMP
TPA2005D1ZQYR
C327 0.01u 62K
D1
LINE_N IN-
R311
C328 0.01u 62K
C1
LINE_P IN+
R312
A1
SPK_AMP_EN _SD
UART300
3G 2.5G
1
GND GND
2
RX RX UART_RXD
3
TX UART_TXD
TX
4
UFLS NC1
5
ON_SW ON_SW PM_ON_SW_N
6
VBAT VBAT VBATT
7
PWR NC2 USB_VBUS
8
URXD NC3 USB_D-
9
UTXD NC4 USB_D+
10
DSR
11
RTS
12
CTS
0.1u C300
MIC_JACK MIC2P
HPH_R
EAR_SENSE_N
MIC_JACK Pull-down
HPH_L
Pls, check MICBIAS for a hook
VREG_MSMP_2.6V
switch detection to R304 manually.
VREG_MSMP_2.6V
2.2K R303
C310
0.1u
5
VIN- 4
VCC 1
HOOK_SENSE
VIN+ OUT
3 GND
Pull-down
2
U300
NCS2200SQ2T2G
MIC
MICBIAS
R309
2.2K
C323 0.1u
MIC1P
C324 0.1u
MIC1N
B4
VDD1 +VPWR
C4
VDD2
B1
NC
CON301
U301
FB301
A4 1
VO-
HH-1M1005-601JT
FB302 2
D4
VO+
HH-1M1005-601JT
ENBY0001802
24-8005-002-100-867
C332
1u
CU405
LGMC
LGE Internal Use Only