Samsung TXJ1366 specifications No Signal

Troubleshooting

5-4 No Signal

No

Signal

Abnormal

Check

Normal

each tuner

terminal

voltage.

Check

Check voltage

Abnormal

Normal

line.

tuner SCL,SDA

waveform.

Check

Normal

Check

tuner IF terminal

Micom IC901.

waveform.

Check

Abnormal

IC201 Pins 7,8

waveform.

Replace tuner.

Check IC201 Pin 41

Normal

waveform level.

Check

whether AGC and

Abnormal

Normal (2Vp-p)

AFTadjustment are normal in

the service mode.

Check

Normal

IC201 Pin 43 waveform

Readjust AGC

level.

Abnormal

Check

and AFT.

Normal (1Vp-p)

IC201 Pin 47

waveform level.

Abnormal

Check

Normal (2Vp-p)

IC201 Pins

19,20, 21

waveform

level.

Check

IC201

Normal (3~5Vp-p)

Pin 37

waveform

level.

Replace IC201.

Check CRT PCB (180V)

and heater Voltages.

Normal (1Vp-p)

5-4 Samsung Electronics