Samsung sf150t Service Manual page 28

6-9. Malfunction in Manual Receiving
Start
Lift handset
Press START
Y
Machine goes
on-line ?
N
Check U7-45
(Hook Event)
Y
OK ?
N
Replace U7
SF150T
Check LIU board
N
OK ?
Y
Replace main
board
Replace LIU board
Troubleshooting
End
6-13