Daewoo DV-K580NZ-T 사용자 설명서

Is color signal output

from pin7 of IC 401?

Is color signal input into 

pin 15 of IC 301?

Is +5V supplied at

pin 1, 2 of IC 401?.

NO

YES

Check Q409, 

Q414, Q415.

NO

Is color signal output from

pin 27 of IC 301?

YES

Is C-ROTARY input into

pin 41 of IC 301?

NO

Check power circuit.

NO

Clean head or change head.

YES

Check pin 15 of IC 601.

NO

YES

Change IC 301.

Is color signal input into

pin 25 of IC 301?

Is 5V supplied at 

pin 28 of IC 301?

NO

Check power.

NO

YES

YES

Check  X 302.

Check oscillation of

pin 18, 19 of IC 301.

Is composite video signal 

output from pin 3 of IC 301?

Check X 301.

Check pin 35 Vcc of IC 301.

NO

NO

YES

YES

YES

Is V composite signal input

into pin 4 of IC 301?

Is signal output from 

pin 8 of IC 303?

NO

YES

NO

Is signal input

into pin 4 of X301?

Check PATTERN.

Check Q303.

NO

YES

YES

Is signal output

into pin 1 of X303?

Check X303.

NO

YES

Is signal input

into pin 6 of IC 303?

Check Q370, 371, 372,

373, 374, 375, 378.

NO

YES

Is B/W(H) signal input

into pin 4 of IC 303?

Check pin100 of IC 601.

NO

YES

Change IC 301.

Is composite V-signal output

from pin 34 of IC 301?

Change IC 301.

NO

YES

TERMINAL OUT.