LG U370 Service Manual page 142

7. CIRCUIT DIAGRAM
1 2 3 4
A
B
C
BT_SBST
BT_SBCK
BT_SBDT
BT_CLK
D
BT_DATA
BT_TX_RX_N
TCXO_BT
E
F
5
4
3
2
1
C
KEY0
D
E
F
1 2 4
LG(42)-A-5505-10:01
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
5
CN1
1 24
MMC_CLK
2 23
KEY_ROW(0)
3 22
MMC_CD
4 21
MMC_CMD
5 20
MMC_DATA
6 19
KEY_COL(5)
7 18
KEY_ROW(1)
8 17
KEY_ROW(2)
9 16
VREG_MMC_3.0V
10 15
VREG_MSMP_2.7V
11 14
VREG_BT_2.85V
12 13
R7 100ohm
KEY_ROW(0)
R8 100ohm
KEY_ROW(1)
R9 100ohm
KEY_ROW(2)
R10 100ohm
KEY_COL(5)
5 6 7 8
- 143 -
BLUETOOTH
ANT1
R2 NC1
FEED NC2
0
L1
1.8p
M1
LBRQ-2B43A
C12 1000p 9 4
BT_CLK CLK_REF SBST BT_SBST
11
SBCK BT_SBCK
C14 1u 3 12
VCC_OUT SBDT BT_SBDT
C13 2.2u 2 5
BT_TX_RX_N
VDD_INT SYNC_DET_TX_EN
10 13
VREG_MSMP_2.7V VDD_MSM RX_BB_TX_BB BT_DATA
14 7 C11 1000p
VREG_BT_2.85V VDD_BAT XTAL_IN TCXO_BT
T-FLASH
VREG_MMC_3.0V
S1 SCHA1A0102
GND
DAT2_RSV
CD_DAT3_CS MMC_CD
CMD_DI
MMC_CMD
VDD
CLK_SCLK
MMC_CLK
VSS
DAT0_DO
MMC_DATA
DAT1_RSV
R6 C8
GND
470K 0.1u
9
14 15 16
A
B
C
D
E
F
C
D
E
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LGMC
LGE Internal Use Only