Samsung YP-R1 Service Manual page 25

Troubleshooting
FMI trace as
short as possible
0.1nF
FM_ANT
FM_BUS_EN
U102
BCM2070CB0KUFBXG
RES
G4
RFP
D1
XIN
G2
XOUT
G3
LPO_IN
A4
REG_EN
B2
VBAT
A3
VREGHV
A2
VREG
A1
RST_N
B4
TM0
C4
TM2
F3
GPIO_0
B5
GPIO_1
B3
U701
GPIO_5
E6
GPIO_6
E3
GPIO_7
B7
UART_RXD
D8
UART_TXD
C8
UART_RTS_N
D7
UART_CTS_N
E8
SCL
F7
SDA
E7
SPIM_CLK
A8
C7 SPIM_CS_N
F6 PCM_IN
G6 PCM_OUT
PCM_CLK
F4
F5 PCM_SYNC
COEX_IN
B6
E4 COEX_OUT0
COEX_OUT1
E5
C116 Should be placed
close to VDDTF(C1)PIN.
4-10
U101
GND
1
NC_1
C110
FMI
2
RFGND
3
RST
4
SI4709-B-GMR
GND
R113
150
I2C_CLK0
R114
150
I2C_DAT0
VSS_7
G7
VSS_6 A7
VSS_5
C6
VSS_4 D3
VSS_3
F2
VSS_2 D2
VSS_1
C2
VDDO_3 G8
VDDO_2
A6
GND
VDDO_1 G5
VDDC_3
F8
VDDC_2 B8
VDDC_1
A5
VDDPX G1
VDDRF
F1
VDDLNA E1
VDDTF
C1
VDDIF B1
GND
REG_BT
U101
GND
C111
100nF
ROUT
12
GND_1
11
VD
10
RCLK
9
GND
U401
REG_BT
P_3.0V
1
GND
C112/C124 Should be placed
close to VDDPX(G1)/VDDIF(B1)PIN.
C113 Should be placed
close to VDDLNA(E1)PIN.
 MAIN PCB Top, page 6-1
<Fig. 4-5>
FM_SEARCH
R117
1K
R116
1K
P_3.0V
GND
close to
VD pin
GND
R118
1K
1
 BLUETOOTH / FM, page 7-9
1
Samsung Electronics
C121
2200nF
FM_LINE_IN_L
C122
2200nF
FM_LINE_IN_R
32.768KHZ_OUT