DAEWOO DVF803M
Manual de Servicio

3-3. SERVO SYSCON CIRCUIT

A.
Playback picture is not good.

Noise appears although adjusting tracking. YES

NO

Adjust tracking.

Noise shakes up and down on the screen.

NO

Noise appears although change cassette tape.

YES

Check and re-adjust the Path of Deck.

YES

Is CTL pulse applied to pin 73 of IC601?

NO

CTL HEAD height is normal and there is not dust.

NO

Adjust the HEAD height and remove dust.

YES

YES

Check circuit adjacent to IC601.

Is CTL pulse input to pin 71 and 72 of IC601?

NO

Check R523, R524 C508, C509.

YES

The voltage of pin 91 of IC601 is not changed. YES

NO

check R518 and C511.

Check IC601.

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