LG GU280, Руководство по обслуживанию

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7. CIRCUIT DIAGRAM
LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
K7.
4
10
3
R
VREG_MSMP_2.6V
K7.
4
20
3
R
K
0
0
1
3
0
3
R
s
m
h
o
K
1
9
4
0
3
R
2
1
QSC6240_DATA,QSC6240_POWER
U201
8
C
A
1
C
A
0
1
B
A
3
2
T
6
1
T
5
1
T
8
1
R
6
1
R
5
1
R
3
1
R
2
1
R
1
1
R
0
1
R
9
R
8
R
6
R
6
1
P
5
1
P
4
1
P
3
1
P
2
1
P
1
1
P
0
1
P
9
P
8
P
6
1
N
5
1
N
4
1
N
3
1
N
2
1
N
1
1
N
0
1
N
9
N
8
N
3
2
M
2
2
M
9
1
M
6
1
M
5
1
M
4
1
M
3
1
M
2
1
M
1
1
M
0
1
M
9
M
8
M
1
2
L
9
1
L
8
1
L
6
1
L
5
1
L
4
1
L
9
L
8
L
6
1
K
5
1
K
4
1
K
9
K
8
K
1
2
J
8
1
J
4
1
J
3
1
J
2
1
J
1
1
J
0
1
J
9
J
8
J
1
2
H
4
1
H
3
1
H
1
1
H
9
H
2
2
G
8
1
G
2
2
F
1
2
F
9
1
F
8
1
F
7
1
F
6
1
F
5
1
F
6
F
3
2
E
2
2
E
1
2
E
9
1
E
7
1
E
6
1
E
2
2
C
1
2
C
9
1
B
A2 C15
AB3
E2 AA4
E5 AA5
AB5
C6 AA6
F1 AB4
F10
F2 F11
E6 AA2
Y3
C7 AA1
F5 Y2
B6 Y1
W3
L5 W2
K5 V2
V1
H5 W1
G5 A8
J6 B8
J5 E9
H6 C8
G6
P5 E14
F3 C11
E11
J2 E12
P2 B11
E13
J1 C12
P1 B12
F12
E1 C13
D1 B13
D2 F13
C1 B14
B1 C14
C2 A11
B3 A10
E3 B10
D3 H12
B4 B9
A3 C9
C4 H10
A4 AC4
C5 AB6
B5 AC5
A5 B7
A7
T2 E7
T1 F7
R2 F8
R1 E8
N2 A13
N1 F14
M2 A14
M1 B15
L2 E15
L1 B17
K2 A17
K1 B16
H2 A16
H1 C16
G1 C17
G2 T14
V7
U3 W6
T3 W7
T6 W8
P3 W9
T5 V8
P6 AA7
R5 AB8
N6 AA3
H3 AB2
AB1
L6 AC3
M3
K3
N5
M5
M6
K6
8
1
P
9
1
T
1
2
T
1 2
R
9
1
P
9 1
N
1
2
M
3
2
P
3 2
N
2
2
P
2 2
N
1 2
N
1
2
P
2 2
R
0 1
C
5
U
3
V
6
C
A
7
C
A
8
A
A
9
A
A
9
F
0
1
E
6
V
6
U
5
W
5
V
1
1
T
2
C
A
0
1
T
9
T
8
T
3
_
E
D
O
M
2
_
E
D
O
M
1
_
E
D
O
M
0
_
E
D
O
M
C
N
D
I
D
T
S
M
T
K
C
T
N
_
T
S
R
T
D
X
R
_
1
T
R
A
U
N
_
T
U
O
S
E
R
T
X
E
_
F
E
R
_
R
DI
_
B
S
U
P
D
_
B
S
U
M
D
_
B
S
U
O
D
T
K
C
T
R
D
X
T
_
1
T
R
A
U
1
NI
A
K
H
P
1
CI
M
N
1
CI
M
P
2
CI
M
N
2
CI
M
P
_
L
_
NI
_
E
NI
L
N
_
R
_
NI
_
E
NI
L
P
M
O
C
C
P
O
R
A
E
N
O
R
A
E
P
_
L
_
T
U
O
_
E
NI
L
N
_
R
_
T
U
O
_
E
NI
L
P
_
L
_
T
U
O
_
H
P
H
N
_
R
_
T
U
O
_
H
P
H
EBI1_A_D_31
EBI1_A_D_30
EBI1_A_D_29
EBI1_A_D_28
EBI1_A_D_27
EBI1_A_D_26
GPIO_77 EBI1_A_D_25
GPIO_76
GPIO_75
EBI1_A_D_24
GPIO_74 EBI1_A_D_23
GPIO_73 EBI1_A_D_22
GPIO_72 EBI1_A_D_21
GPIO_71 EBI1_A_D_20
GPIO_70 EBI1_A_D_19
GPIO_69 EBI1_A_D_18
GPIO_68 EBI1_A_D_17
GPIO_67 EBI1_A_D_16
GPIO_66
GPIO_65
EBI1_A_D_15
GPIO_64 EBI1_A_D_14
GPIO_63 EBI1_A_D_13
GPIO_62 EBI1_A_D_12
GPIO_61 EBI1_A_D_11
GPIO_60 EBI1_A_D_10
GPIO_59 EBI1_A_D_9
GPIO_58 EBI1_A_D_8
GPIO_57 EBI1_A_D_7
GPIO_56 EBI1_A_D_6
GPIO_55 EBI1_A_D_5
GPIO_54 EBI1_A_D_4
GPIO_53 EBI1_A_D_3
GPIO_52 EBI1_A_D_2
GPIO_51 EBI1_A_D_1
GPIO_50 EBI1_A_D_0
GPIO_49
GPIO_48
EBI2_A_D_15
GPIO_47 EBI2_A_D_14
GPIO_46 EBI2_A_D_13
GPIO_45 EBI2_A_D_12
GPIO_44 EBI2_A_D_11
GPIO_43 EBI2_A_D_10
GPIO_42 EBI2_A_D_9
GPIO_41 EBI2_A_D_8
GPIO_40 EBI2_A_D_7
GPIO_39 EBI2_A_D_6
GPIO_38 EBI2_A_D_5
GPIO_37 EBI2_A_D_4
GPIO_36 EBI2_A_D_3
GPIO_35 EBI2_A_D_2
GPIO_34 EBI2_A_D_1
GPIO_33 EBI2_A_D_0
GPIO_32
GPIO_31
EBI1_DQS_0
GPIO_30 EBI1_DQS_1
GPIO_29
GPIO_28
EBI1_DQM_0
GPIO_27 EIB1_DQM_1
GPIO_26
GPIO_25
EBI1_CKE_0
GPIO_24 EBI1_CKE_1
GPIO_23
GPIO_22
EBI1_CS0_N
GPIO_21 EBI1_CS1_N
GPIO_20 EBI1_ADV_N
GPIO_19 EBI1_OE_N
GPIO_18 EBI1_WE_N
GPIO_17
GPIO_16
EBI1_M_CLK
GPIO_15 EBI1_M_CLK_N
GPIO_14
GPIO_13
LCD_RS
GPIO_12 LCD_EN
GPIO_11 LCD_CS_N
GPIO_10
GPIO_9
EBI2_WE_N
GPIO_8 EBI2_OE_N
GPIO_7
GPIO_6
EBI2_UB_N
GPIO_5 EBI2_LB_N
GPIO_4
GPIO_3
EBI2_CS1_N
GPIO_2 EBI2_CS0_N
GPIO_1
GPIO_0
EBI2_M_CLK
1
_
F
R
_
A
_
D
N
G
2
_
F
R
_
A
_
D
N
G
3
_
F
R
_
A
_
D
N
G
4
_
F
R
_
A
_
D
N
G
5
_
F
R
_
A
_
D
N
G
6
_
F
R
_
A
_
D
N
G
7
_
F
R
_
A
_
D
N
G
8
_
F
R
_
A
_
D
N
G
9
_
F
R
_
A
_
D
N
G
1
_
GI
D
_
D
N
G
2
_
GI
D
_
D
N
G
0
1
_
F
R
_
A
_
D
N
G
1
1
_
F
R
_
A
_
D
N
G
2
1
_
F
R
_
A
_
D
N
G
3
1
_
F
R
_
A
_
D
N
G
4
1
_
F
R
_
A
_
D
N
G
5
1
_
F
R
_
A
_
D
N
G
6
1
_
F
R
_
A
_
D
N
G
7
1
_
F
R
_
A
_
D
N
G
3
_
GI
D
_
D
N
G
4
_
GI
D
_
D
N
G
5
_
GI
D
_
D
N
G
8
1
_
F
R
_
A
_
D
N
G
9
1
_
F
R
_
A
_
D
N
G
6
_
GI
D
_
D
N
G
7
_
GI
D
_
D
N
G
8
_
GI
D
_
D
N
G
9
_
GI
D
_
D
N
G
0
1
_
GI
D
_
D
N
G
1
1
_
GI
D
_
D
N
G
0
2
_
F
R
_
A
_
D
N
G
1
2
_
F
R
_
A
_
D
N
G
2
2
_
F
R
_
A
_
D
N
G
2
1
_
GI
D
_
D
N
G
3
1
_
GI
D
_
D
N
G
3
2
_
F
R
_
A
_
D
N
G
4
2
_
F
R
_
A
_
D
N
G
5
2
_
F
R
_
A
_
D
N
G
4
1
_
GI
D
_
D
N
G
5
1
_
GI
D
_
D
N
G
6
2
_
F
R
_
A
_
D
N
G
7
2
_
F
R
_
A
_
D
N
G
8
2
_
F
R
_
A
_
D
N
G
9
2
_
F
R
_
A
_
D
N
G
0
3
_
F
R
_
A
_
D
N
G
1
3
_
F
R
_
A
_
D
N
G
6
1
_
GI
D
_
D
N
G
7
1
_
GI
D
_
D
N
G
8
1
_
GI
D
_
D
N
G
9
1
_
GI
D
_
D
N
G
0
2
_
GI
D
_
D
N
G
1
2
_
GI
D
_
D
N
G
2
3
_
F
R
_
A
_
D
N
G
3
3
_
F
R
_
A
_
D
N
G
4
3
_
F
R
_
A
_
D
N
G
5
3
_
F
R
_
A
_
D
N
G
6
3
_
F
R
_
A
_
D
N
G
7
3
_
F
R
_
A
_
D
N
G
2
2
_
GI
D
_
D
N
G
3
2
_
GI
D
_
D
N
G
4
2
_
GI
D
_
D
N
G
5
2
_
GI
D
_
D
N
G
6
2
_
GI
D
_
D
N
G
7
2
_
GI
D
_
D
N
G
8
3
_
F
R
_
A
_
D
N
G
9
3
_
F
R
_
A
_
D
N
G
0
4
_
F
R
_
A
_
D
N
G
8
2
_
GI
D
_
D
N
G
9
2
_
GI
D
_
D
N
G
0
3
_
GI
D
_
D
N
G
1
3
_
GI
D
_
D
N
G
2
3
_
GI
D
_
D
N
G
3
3
_
GI
D
_
D
N
G
1
4
_
F
R
_
A
_
D
N
G
2
4
_
F
R
_
A
_
D
N
G
3
4
_
F
R
_
A
_
D
N
G
4
3
_
GI
D
_
D
N
G
5
3
_
GI
D
_
D
N
G
6
3
_
GI
D
_
D
N
G
7
3
_
GI
D
_
D
N
G
8
3
_
GI
D
_
D
N
G
9
3
_
GI
D
_
D
N
G
0
4
_
GI
D
_
D
N
G
1
4
_
GI
D
_
D
N
G
2
4
_
GI
D
_
D
N
G
4
4
_
F
R
_
A
_
D
N
G
3
4
_
GI
D
_
D
N
G
4
4
_
GI
D
_
D
N
G
5
4
_
F
R
_
A
_
D
N
G
V
5
_
D
N
G
D
N
G
_
F
E
R
6
4
_
GI
D
_
D
N
G
16 15 14 13 12 11 10 9
8
7 6 5 4 3 2 1
L
K
J
I
H
G
F
E
D
C
B
A
L
K
J
I
H
G
F
E
D
C
B
A
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
V
6.
2 _
P
M
S
M
_
G
E
R
V
V
2.
2
_
A
F
R
_
G
E
R
V
TP
TP301
R305 18
C301
2p
1
0
3
A
V
R
F
0
7
2
8
1
5
0
S
V
CI
R306 18
7
0
3
R
K
2.
2
TP302
TP
2
0
3
C
n
0
0
1
TP
TP303
UART1
UART_TP
12
11
10
9
8
7
6
5
4
3
2
1
GND
RX
TX
NC1
ON_SW
VBAT
NC2
NC3
NC4
DSR
RTS
CTS
GND
RX
TX
VCHAR
ON_SW
VBAT
PWR
URXD
UTXD
3G 2.5G
100n
C303
K
2.
2
8
0
3
R
K
2.
29
0
3
R
TP
TP304
4
0
3
C
n
0
0
1
V
6.
2
_
P
M
S
M
_
G
E
R
V
0
1
3
R
K
0
0 1
2
1
5
0
3
C
n
0
7
4
6
0
3
C
n
0
0
1
V
8.
1
_
E
M
S
M
_
G
E
R
V
TP
TP305
V
8.
1
_
M
A
C
_
O
D
L
1
1
3
R
K
2.
2
n
0
0
17
0
3
C
K
0
1
2
1
3
R
R
F
0
7
2
8
1
5
0
S
V
CI
2
0
3
A
V
n
0
7
48
0
3
C
3
1
3
R
0
4
0
6
AXT610124
CN301
6 5
7 4
8 3
9 2
10 1
G1 G2
G3 G4
3
0
3
A
V
R
F
0
7
2
8
1
5
0
S
V
CI
DNI
C309
V
8.
1
_
E
M
S
M
_
G
E
R
V
TRK_LO_ADJ
PA_R0
UART1_RX_DATA
A
T
A
D
_
X
R
_
1
T
R
A
U
UART1_TX_DATA
A
T
A
D
_
X
T
_
1
T
R
A
U
UART1_CTS_N
UART1_RFR_N
BT_PWR_ON
BT_PCM_SYNC
BT_PCM_DIN
BT_PCM_DOUT
BT_PCM_CLK
PA_R1
VBATT
MSM_RESIN_N
VBUS
VBUS
PS_HOLD
KPDPWR_N
GND
EBI2_WE_N
LCD_IF[2]
CAM_LDO_EN
LCD_BACKLIGHT_CONT
M
_
R
_
NI
E
NI
L
P
_
L
_
NI
E
NI
L
LCD_IF[1]
SLIDE_DETECT
-
V
C
R
+
V
C
R
EBI2_DATA[0]
EBI2_DATA[1]
EBI2_DATA[10]
EBI2_DATA[11]
EBI2_DATA[12]
EBI2_DATA[13]
EBI2_DATA[14]
EBI2_DATA[15]
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_OE_N
KEY_COL[3]
KEY_ROW[3]
KEY_ROW[2]
KEY_ROW[1]
KEY_ROW[0]
LCD_VSYNC
CAMIF_HSYNC
CAM_RST
CAM_PWDN
CAMIF_DATA[0]
CAMIF_DATA[1]
CAMIF_DATA[2]
CAMIF_DATA[3]
CAMIF_DATA[4]
CAMIF_DATA[5]
CAMIF_DATA[6]
I2C_SDA
I2C_SCL
I2C2_SDA
I2C2_SCL
VGA_CAM_RST
LCD_RST
LCD_MAKER_ID
KEY_COL[4]
LCD_CS_N
LCD_ADS
P
_
E
NI
L
N
_
E
NI
L
VGA_CAM_PWDN
CAMIF_MCLK
CAMIF_DATA[7]
CAMIF_VSYNC
CAMIF_PCLK
P
1
CI
M
KEY_ROW[4]
I2C_SDA_BL
I2C_SCL_BL
ANT_SEL[0]
ANT_SEL[1]
ANT_SEL[2]
ANT_SEL[3]
UART_BT_SEL
UART_BT_SEL
P
2
CI
M
M
D
_
B
S
U
USB_DM
SDRAM_ADV_N
SDRAM_DATA[0]
SDRAM_DATA[1]
SDRAM_DATA[10]
SDRAM_DATA[11]
SDRAM_DATA[12]
SDRAM_DATA[13]
SDRAM_DATA[14]
SDRAM_DATA[15]
SDRAM_ADDR[0]
SDRAM_ADDR[1]
SDRAM_ADDR[2]
SDRAM_ADDR[3]
SDRAM_DATA[2]
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_DATA[3]
SDRAM_DATA[4]
SDRAM_DATA[5]
SDRAM_DATA[6]
SDRAM_DATA[7]
SDRAM_DATA[8]
SDRAM_DATA[9]
SDRAM_CKE[0]
SDRAM_CS_N[0]
SDRAM_DQM[0]
SDRAM_DQS[0]
SDRAM_DQS[1]
SDRAM_OE_N
SDRAM_WE_N
EBI2_CS1_N
EBI2_ALE_N
EBI2_CLE_N
SDRAM_DQM[1]
MICROSD_DETECT
MICROSD_DATA[0]
MICROSD_DATA[1]
MICROSD_DATA[2]
USW_INT
USIM_RST
USIM_CLK
USIM_DATA
NAND_READY
MICROSD_DATA[3]
MICROSD_CLK
L
_
H
P
H
R
_
H
P
H
P
D
_
B
S
U
USB_DP
JTAG_TRST_N
N
_
T
S
R
T
_
G
A
T
J
JTAG_TMS
S
M
T
_
G
A
T
J
JTAG_TDO
O
D
T
_
G
A
T J
JTAG_TDI
I
D
T
_
G
A
T
J
JTAG_TCK
K
C
T
_
G
A
T
J
JTAG_RTCK
K
C
T
R
_
G
A
T J
N
_
T
U
O
S
E
R
SDRAM_CLK_M
SDRAM_CLK_P
SDRAM_ADDR[14]
SDRAM_ADDR[15]
SDRAM_ADDR[13]
GSM_SW_MODE
KEY_COL[0]
KEY_COL[1]
KEY_COL[2]
MICROSD_CMD
SDRAM_DATA[0:15]
SDRAM_ADDR[0:15]
EBI2_DATA[0:15]
0 0
100K : 91K : 1.048V - 1.0
100K : 240K : 1.553V - 1.2
Connect to GND on PCB Array
MODE_3 MODE_2 MODE_1 MODE_0
MODE
( Default Pull-Down)
LCD_DRV_N - SUB_BACKLIGHT
100K : 6.2K : 0.128V - A, G
100K : 470K : 1.814V - 1.3
HKAIN1:PCB_Rev_ADC
MPP3 - KYBD_BACKLIGHT
HKAIN0 - VBATT_TEMP
* MODE_3 : Not connected(internally pulled-down) - Enabled by HW
MPP2 - Null
100K : 62K : 0.842V - F, L
High : BT UART
100K : 47K : 0.703V - D, J
0
100K : 22K : 0.396V - C, I
ADC
1 Native ARM9 JTAG
100K : 13K : 0.253V - B, H
100K : 150K : 1.32V - 1.1
MPP4 - Null
100K : 1.5M : 2.062V - 1.4
MPP1 - VREF_RFA_2.2V (internally)
HKAIN1 - PCB_Rev_ADC
Low : UART Comm
JTAG