Samsung SGH-P270 Service Manual page 36

Flow Chart of Troubleshooting
FM_ANT
R500
EARMICP
EARMICN
EARSPK_R
EARSPK_L
EARSW
JACKIN
EAR_ADC
TXD1
RXD1
AUX_ON
R510
USBDP
R512
USBDM
VDD_IO_HIGH
C500 C501
R501
R506
R507
D516
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VDD_IO_LOW
VDD_IO_HIGH VBUS_5V
VCHG_5V VBAT
R502 R503
U508
U509
R546
R508
R531
D503
C504
D517
9-18
D506
U504
U505
U506
U507
R509
D512
IFC500
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17 17
18
18
19 19
20
20
21
NC
22 NC
23 NC
24
NC
25 NC
26
NC
27
NC