DAEWOO DVF562_F362Series
Instrukcja Serwisowa

3-5. VIDEO CIRCUIT B
No sound in the playback mode after in the record mode.

A.EE MODE PIcture N.G
Is video signal input into pin 12 and 13 of IC151? YES NO Check PIF circuit and A/V jack.

Is the signal applied to pin 16 of IC201? YES

NO

Check circuit adjacent to IC151.

Is E12V supplied to pin 16 of IC151 YES

NO

Check ever 12V

Is 5V applied to pin 24 of IC201? YES

NO

Check IC601.

Is signal output from pin 14 of IC151? YES

NO

Check IC151 and adjacent circuit.

Is there output at pin 21 of IC201? YES

NO

Check IC201.

Is signal input into pin of IC301?
31

NO

Check connector and PCB pattern

YES

Does T201 oscillate?

NO

Is the voltage above 10V at pin 3 of T201 YES

NO

Check Q202 and T201.

Is signal output from pin 28 of IC301?

NO

Is 5V supplied to pin 24 and 29 of IC301? YES

NO

Check power circuit

YES Check Q201 collector:above 10V Base:0V YES Check T201 NO Check Q201.

YES Check IC301 pin 4 EE(L)/PB(H) H L Check IC601 29 pin

Change IC301

Is record current 3.0mVms? YES

NO

Adjust Record current.

Is signal input from ICS01 10 pin?

NO

Check pattern, connector and Q312.

YES

YES

Is 0V applied to pin 1 of IC201? YES

NO

Check IC201.

Is signal output from ICS01 8 pin? YES

Check osd circuit

Clean HEAD. RF out Line out

27

28