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Sharp VT-3418X - Page 60

Sharp VT-3418X
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VCR E
-
E MODE
TROUBLESHOOTiNG
N
O
E-E signal.
FLOW CHART NO. 1-17
t
Is
there a signal at pin
(26)
of
IC2201?
NO
Check the harness from
f
AD
J
to
f
EL
J
and input signal line.
J
I
YES
I
,
-
NO
Is there a signal at pin
(28)
of
IC2201
?
t
Is there
5V
at pins
(25)
NO
and
(52)
of
lC220
1 ?
1
YES
L
&YES
r
clock signals at pins
(9)
and
(10)
of
IC2201
signals from
IC8801.
(
Replace
IC2201
)
VCR SOUND
TROUBLESHOOTTNG
FLOW CHART NO.
l-18
I
No Sound
I
<
EE
Sound is not heard >
I
EE
<
EE
Sound is heard
.,
But audio
REC
is not
<
PB
Sound is not heard
>
Check the ‘L” level at
pin(ll)oflC6601
in
Replace
IC6601.
)J
Is there Bias Oscillator
signal at pin
(6)
and
pin
(5)
of
T6601
(Bias
Oscillator) ?
YES
Check the
REC
Signal
line between pin
(3)
of
IC6601
and Audio
Head.
Check pin (19) of
IC6601
and peripheral
-
parts.
Is there an Audio
Signal at pin
(22)
of
NO
IC6601
?
Check the
“H’
level at
PB
mode.
-1
Check Q6602,Q6601 and peripheral parts.
IQ6602.
I
L
I
I
I
YES
Signal at pin
(7)
of
Check the Audio mute circuit;
46606
and Q6607.
1
f
ELJ
connector?
I I
YES
I
Check the
IC351
(IX0241CE)
and
lC352
(TDA7233) on the
TV mother
PWB.
I

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