DAEWOO DVK420
Manual de Servicio

TROUBLESHOOTING FLOW CHART

3. SERVO-SYSCON CIRCUIT
A.

Playback picture is not good

Adjust tracking.

adjusting tracking.

Noise appears although

NO

Noise appears although change cassette tape.

YES

Check and re-adjust the path of Deck.

YES Is CTL pulse output at pin 97 of IC501? NO CTL HEAD height is normal and there is not dust? NO Adjust the HEAD height and remove dust. Check circuit adjacent to IC501

YES The voltage of pin 7 of IC501 not changing? YES Playback picture Check IC501 is not good NO

YES

Check R509, C520

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