Samsung SPH-A900 Service Manual page 23

6-3-3 Dsub 25 PIN CONNECTOR PIN DESCRIPTION (TEST CABLE 1, BACK SIDE)
DATA DESCRIPTION
GND
VBATT
HP_PWR
RX_AUDIO
TX_AUDIO
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Dsub CONN.
PIN NO.
13
4
7
12
10
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DATA DESCRIPTION
GND
VBATT
DP_RX_DATA
DP_TX_DATA
6-3
Test Procedure
Dsub CONN.
PIN NO.
24,25 (SHORT)
5,6 (SHORT)
21
22