DAEWOO ELECTRONICS DV-F562 Series, Руководство по обслуживанию

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22
Playback picture
is not good.
Noise appears
on the screen
on the whole.
Is Enve.wavefrom
supplied to pin of
PT01
4
Are SW pulse and
HA SW applied to
PreAmp circuit?
Check video circuit.
Auto stop during
playback.
Is Reel pulse
applied to pin and
of IC601?
5
6
Check flow A
Is SW pulse obtained
from pin of IC601?
16
Check D.PG input
and connector
between deck and
main PCB.
Check pattern
Check connector, Head
Amp and Head dust.
Change head
Check reel sensor.
Is D.FG applied to
pin of IC601
Check connector and
D.FG circuits.
Check IC601.
YES
NO
YES
YES
YES
YES
YES
YES
NO NO
NO
NO
NO
YES
NO
67
B.
C.
21
91
The voltage of pin
of IC601 is not
changed.
Is CTL pulse input
to pin and of
IC601
71 72
73
Check and
re-adjust the
Path of Deck.
Check circuit
adjacent to IC601.
Check R668, R669
C508, C509.
Check R518
and C511.
Check IC601
YES
YES
YES
YES
YES
YES
YES NO
NO NO
NO
NO
A.
Playback picture
is not good.
Noise appears
although adjusting
tracking.
Is CTL pulse applied
to pin of IC601.
Noise shakes up
and down on the
screen.
CTL HEAD height is
normal and there is
not dust.
Adjust the HEAD
height and remove
dust.
Noise appears
although change
cassette tape.
YES
3-3. SERVO SYSCON CIRCUIT