Samsung SF6500 Service Manual page 98

7-4-8 Malfunction in Manual Receiving
START
Press OHD and
press START
Goes on line?
N
Check signal in
P4-12 in main b'd
Logic 'L'?
N
Replace the main b'd
Samsung Electronics
Y
Check control
Y
signal(P1-13, 14) in
the LIU b'd
Logic 'L'?
Y
Replace the LIU b'd
N
Replace the flat
Maintenance & Troubleshooting
cable
END
7-13