Samsung SGH-U900 Service Manual page 60

C119 C120 C121
RADIO_ANT
ANT100 L111
F104
R112
2 OUT
GND
3
L112
EAR_MIC_P
EAR_MIC_N
EAR_R
EAR_L
EAR_SW
JACK_IN
PHONE_DEBUG_ON
TXD
RXD
AUTO_PWR
USB_D_P
USB_D_N
VUSB_5.0V
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VBT_1.5V
C116
BT_TCXO
C124
IN 4
GND
1
VMSMB_2.6V VBT_2.6V
C128 C127
R610
1
7
2
8
R611
3
ZD600
A5
VREGFM_DAC
D5
BT_PWDN
VREG_CTL
B5
VREG_BT
TP100
D6
BT_RST
RST_N
R109
H2
RES
B4
LPOIN
RTC_CLK L110
A3
C117
FMVCO_LP
A2
FMVCO_LN
D4
FMPLLCAP
C118 A1
FM_CVAR
C1
FMRF_INN
D1
FMRF_INP
F1
RFIOP
G1
RFION
K3
XTALN
K2
XTALP
C123
K5
RADIO_L AUDIOR
C125 K6
RADIO_R
AUDIOL
J5
AUDIOGND
K8
VDDO18
A8
VDDO18
F9
VDDO18
E2
VDDRF
E1
VDDRF
A6
VDDR5V
B6
VDDR3V
J1
VBT_1.5V
VDDLO
K1
VDDPLL
J3
VDDXO
E10
VDDOC1
J8
VDDOC1
A9
C129
VDDOC1
G5
VBT_1.5V VDDC
D9
VDDC
G7
L113 VDDC
A7
VDDC
J10
VDDC
B1
VDDFM
B3
VDDFM
J4
VDDFM
K4
VDDFM
A4
VDDFM
C130
VEXT_5.0V
R618
AUTO_PWR_J
RXD_J
TXD_J
L602
L603
R605
R606
R607
R608
R609
6
5
4
ZD601
C606 C607
ZD607 TA600
10-18
Flow Chart of Troubleshooting
U100
H10
GPIO0 BT_WAKE
H9
BT_HOST_WAKE
GPIO1
F10
GPIO2
G9
GPIO3
E6
GPIO4
G6
BT_TCXO_EN
GPIO5
B8
GPIO6
D10
GPIO7
C131
B9
BT_PCM_CLK
A_GPIO0
C10
BT_PCM_SYNC
A_GPIO1
B10
BT_PCM_IN
A_GPIO2
A10
BT_PCM_OUT
A_GPIO3
E9
A_GPIO4
K9
A_GPIO5
B7
A_GPIO6
E7
A_GPIO7
R110
K10
UART_TXD RXD
J9
TXD
UART_RXD
F7
R111
UART_CTS_N BT_CTS
C9
BT_RTS
UART_RTS_N
VMSMB_2.6V
K7
TM0
J7
TM1
F6
TM2
J6
TM3
B2
VSS
C2
VSS
D2
VSS
D7
VSS
E4
VSS
E5
VSS
F2
VSS
F4
VSS
F5
VSS
G2
VSS
G4
VSS
G10
VSS
H1
VSS
J2
VSS
1
NC
2
NC
VBAT
RADIO_ANT R620
2 1
L604
C608
TA601
ZD608
IFC600
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25