Samsung SF150 Troubleshooting
Y
Y
Y
Y
Y
YY
Y
N
N
NN
YY Y
NN N N
N
N
6. Troubleshooting
6-1. Initial Checkout and Overall Troubleshooting Flow
SF150T 6-1
Plug in the power
cord
Load document in
feeder
Copy OK ?
OGM play back ?
Call machine from
another phone
Auto Answer
OK ?
ICM Recording ?
Manual
operation OK ?
OGM Recording
RX OK ?
Document feed ? Push 'START' Key CIS ON ?
System
initialized ?
See Section 6-3 See Section 6-2
See Section 6-5See Section 6-4
See Section 6-5
See Section 6-8
See Section 6-7
See Section 6-6
See Section 6-9 See Section 6-10
A
Power Supply
OK ?
Start
Troubleshooting
6-2 SF150T
YY
N N
Lift Handset
off hook
Dial tone OK ? TX OK ?
See Section 6-11
End
See Section 6-12
A
Troubleshooting
SF150T 6-3
6-2. Check Power Supply
N
N
Check AC socket
voltage
Power cord
connected ?
Start
220 - 240 VAC?
Y
Y
END
Connect as required Notify customer
N N
N
Check
Power Cord
Continuity
Replace Cord Replace Fuse Replace Q1
YY
Fuse OK ?
Q1 OK ?
Y
N
R5 changed
value ?
Remove short
End
Troubleshooting
6-4 SF150T
6-2-1 No + 5 V
Y
NN
output shorted ?Start
N
Y Y
N
Remove short
Y
Replace D4
Check PCB Pattern Replace U2
Check CON 1
Check
U2 Input voltage
D4 Open or
Shorted ?
DC 6 V Check U2 ?
End
6-2-2 No -12 V
YY
N N
output shorted ?
Start
N
Y Y
N
Remove short Replace D5
Check PCB Pattern Replace U1
Check CON1
Check
U1 Input voltage
D5 Open or
Shorted ?
-15 VDC U1 Output ?
End
Troubleshooting
SF150T 6-5
Y
Y
N
N
output shorted ?
Start
N
Y Y
N
Remove short
Replace D3
OVP operation
Restart Replace Q3
Check CON1
D3 Open or
Shorted ?
Check
OVP operation
Q3 OK ?
End
6-2-3 No + 24 V
6-2-4 + 24 V TPH Doesn't output
YN
Check
C/S port short ?
Start
N
Y
Remove short Replace Q5
Check CON1
Q5 OK ?
End
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