Samsung SGH-G400 Service Manual page 54

ANT200 ANT201
L211
UART1_TX
UART1_RX
UART1_RFR
UART1_CTS
HOST_WAKE
BT_WAKE
RADIO_ROUT
RADIO_LOUT
R215
R218
30
UART_RX
1
UART_TX
2
UART_CTS
3
UART_RTS
6
UART_WAKEUP
7
BT_WAKEUP
8
WLAN_RF_ACTIVE
9
WLAN_TX_CONFX
10
WLAN_STATUS
4
VAFL|VAFR
5
VAFR|VAFL
C217 C220
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VREG_BT_2.6V
C217
25
PCM_IN
24
PCM_OUT
26
PCM_CLK
27
PCM_SYNC
MOD201
VREG_BT_2.6V
17
I2C_CK
18
I2C_DA
19
LPO_IN
21
INTX
29
VIO
16
RESET
20
VREG_CTL
9-19
Flow Chart of Troubleshooting
PCM_DOUT
PCM_DIN
PCM_CLK
PCM_SYNC
R208
SLEEP_CLK
BT_RESET
BT_PWR_ON
C220