Samsung SGH-P408 Service Manual page 18

SG H- P408 F low Chart of Troubleshooting
VCC D VCCD
R300 R301
47K 47K
DLC_DETEC T
R30 21
SDS_TX D
R30 31
SDS_RXD
R30 4 1K
DEBUG_TX D
R30 5 1K
DEBUG_RXD
DEBUG_DT R
DEBUG_CT S
DEBUG_RT S
DEBUG_DCD
R30 61
JIG_O N
DEBUG_DS R
DEBUG_RI
TA_VEX T
BP_V F
K
K
K
5 4 5 4
1 3 1 3
2 2
ZD300 ZD301
I/F CONNECTOR
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ZD30 5
ZD303
ZD304
ZD306
ZD302
3- 6
VBA T
C30 0
C301
ZD308
ZD30 7
100NF
220NF
CN300-1
DLC_DETEC T
1
SDS_TXD
2
SDS_RXD
3
DEBUG_TXD
4
DEBUG_RX D
5
6
DEBUG_DT R
7
GND
8
DEBUG_CT S
9
DEBUG_RT S
10
GND
11
DEBUG_DC D
12
JIG_O N
13
VTES T
14
DEBUG_DS R
15
DEBUG_RI
16
VEX T
17
VEX T
18
GND
19
CF
20
BP_V F
21
VBAT
22