Daewoo DV6T834N Service Manual

12
TROUBLESHOOTING
B. Playback picture doesnÕt appear
YES
YES
Is signal output at IC301 pin#14?
Is composite video signal input into
IC301 pin#34?
Is composite video signal output
from IC301 pin#26?
Replace IC301.
Replace IC301.
PB video signal missing.
Is Envelope output from IC301
pin#14?
NO
NO
YES
Check OSD circuit.
Is 5V supplied at IC301 pin#68?
Is SW Pulse input at IC301
pin#57?
Is 5V obtained at IC301
pin#23,44,45,68?
Check POWER 5V.
Check IC601 pin#18.
Clean head or Replace head.
Check POWER circuit.
YES
NO
NO
Is composite video
signal output from
IC301 pin#39?
Is CLOCK (3.58MHz)
supplied at IC301
pin#41?
NO
NO
NO
YES
NO
NO
YES
YES
YES
Does X301 crystal
(3.58MHz)oscillate?
Replace X301.
Check Q301.
YES
Is C.S, DATA, CLOCK signal input
pin#53,54,55 of IC301?
Check IC601 pin#61,71,72
NO
YES
Is signal input into IC301 pin#22?
NO
Replace IC301.
Is composite video signal output
from IC301 pin#36?
NO
Replace IC301.
YES
YES
YES

Daewoo DV6T834N Specifications

General

Brand	Daewoo
Model	DV6T834N
Category	DVD Player
Language	English