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Troubleshooting
4-4 No Signal
Check voltage
Check IC201S Pin 41
waveform level.
IC201 Pin 43 waveform
Abnormal
IC201S Pins 19,20, 21
waveform level.
Check CRT PCB (180V)
Replace IC201S.
and heater Voltages.
4-4
All manuals and user guides at all-guides.com
No Signal
Check
Abnormal
each tuner terminal
voltage.
line.
Check
Micom IC901.
Normal (2Vp-p)
Check
level.
Normal (1Vp-p)
Check
Normal (3~5Vp-p)
Normal
Check
Abnormal
tuner SCL,SDA
waveform.
Normal
Check
IC201S Pins 7,8
waveform.
Normal
Check
whether AGC and
AFTadjustment are normal in
the service mode.
Normal
Check
Abnormal
IC201S Pin 47
waveform level.
Normal (2Vp-p)
Check IC201S
Pin 37 waveform
level.
Normal (1Vp-p)
Normal
Check
tuner IF terminal
waveform.
Abnormal
Replace tuner.
Abnormal
Readjust AGC
and AFT.
Samsung Electronics
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