Samsung SF11OT Servise Manual page 23

Circuit Description
GPO 3
GPO 4
GPO 5
GPO 6
GPO 7
ACTIVE STATE (H)
SPEAKER DISABLE
0
0
0
I
I
MODEM TX PATH
0
MODE DETECT SENSOR OPEN
I
I
0
0
0
0
I
0
0
0
0
0
MOTOR PHASE A
0
MOTOR PHASE B
0
MOTOR PHASE - A
0
MOTOR PHASE - B
ACTIVE STATE (L)
SPEAKERENABLE
RING DETECT
MODE DETECT SENSOR CLOSE