LG HB620 Service Manual page 157

7. CIRCUIT DIAGRAM
1 1 2 2 3 3
A A
MICBIAS
CN701
21
19
1
2
3
R703 68
4 C841 33u
5 C842 33u R704 68
B B
6
7
8 FB504
9
10
11
12
13
14
15
16
17
18
20
22
C C
C840
4.7u
MMI 18Pin CONNECTOR
D D
E E
F F
G G
H H
1 1 2 2 3 3
LGE Internal Use Only
4 4 5 5 6 6
FB503
EAR_MIC_P
TV_OUT
EAR_L
EAR_R VBATT
RMT_INT/USB_D+
RMT_ADC/USB_D- +5V_PWR
EAR_SENSE_N
FL701
USB_VBUS
REMOTE_PWR_ON
1 2
IN OUT
NFM18PC104R1C3
UART_RXD_IN
R705 0
UART_TXD
R706 0
UART_RXD_IN
C704 DNI
TCC_UART_TXD
C705 DNI
TCC_UART_RXD
Rev C
NC2 FEED
1.5p
NC1
ANT701
4 4 5 5 6 6
- 158 -
7 7 8 8 9 9
VREG_MSMP_2.7V
U702
NL17SZ16XV5T2
UART_RX_TP_DELAY_ Switch
NC VCC
A
GND Y UART_RXD
M701
LBDA23QJS0
2 6
RF_IN_OUT SBST BT_SBST
C903 8
SBCK BT_SBCK
7
SBDT BT_SBDT
17 12
PGND1 SYNC_DET_TX_EN BT_TX_RX_N
18 16
PGND2 RX_BB_TX_BB BT_DATA
19 14 C715 1000p
PGND3 TCXO_IN TCXO_BT
20 11
PGND4 CLK_REF BT_CLK
1000p C716
BLUETOOTH
LG INNOTEK
7 7 8 8 9 9
10 10 11 11 12 12
LGE Internal use only
A A
+VPWR
C703
0.01u
B B
FSUSB30UMX U701
10 1
EAR_SENSE_N SEL HSD1+ RMT_INT
9 2
VCC HSD2+ USB_D+
8 3
_OE D+ RMT_INT/USB_D+
7 4
RMT_ADC HSD1- GND
6 5
USB_D- HSD2- D- RMT_ADC/USB_D-
USB/REMOCON_SEL
C C
D D
FOLDER DETECT
R707
VREG_MSMP_2.7V
62
E E
U703
A3212EELLT-T
VDD
G1
OUT G2
FOLDER_DETECT
C710 C711
15p 0.1u
F F
G G
H H
10 10 11 11 12 12
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