CASSETTE CONTROL
TROUBLESHOOTJNG
FLOW CHART NO.
l-4
LOADING MOTOR AND EJECT
TROUBLESHOOTJNG
FLOW CHART NO.
l-5
A cassette tape is not taken in.
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Acassette tape fails to eject.
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I
J
I
r
t
Is
the cassette housing in shape?
NO
Check the cassette housing.
I
i
YES
I
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J
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1
I
Are the cam switch and cassette
slider properly positioned ?
Reposition the cam switch.
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J
YES
[
No
)
Check the cassette switch and all .
cassette tape is inserted ?
the way up to pin
(70)
of
IC8801.
Does
pin
5)
of
lC8803
(EA6209)
go to
l-i
No
level when the
~
Check
IC8801
and all the way up
cassette tape is inserted ?
to pin
(5)
of
lC8803.
I
$
YES
Doespin(2)
of
IC8803
go to 1lV
when the cassette tape is inserted ?
Check
lC8803.
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J
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A cassette tape is taken in, but ejected at once.
f
I
Do start/end sensors voltage at
Fin
(9)
I(8) of
If8801
change from
ND
Check the start
/
end sensors and
J-i
. to
*
L
-
level
respectrvely
when the cassette tape is loaded ?
+YES
Does cassette switch voltage at pin
(70)
of
IC8801
than
e from
0.8V
ND
to
OV
to
2.5V
leve
9
)
Check the cassette switch and all
when the
the way up to
IC8801.
cassette tape is loaded
7
iYES
t
Does the capstan motor start
NO
when the EJECT button is pressed
7
5
See FLOW CHART NO. l-7.
YES
Does the take-up reel disk turn
when the capstan motor is
Check the reel disk and reel drive
running
?
------IN0
-[b]
YES
Is
reel
pluse
at pin
13)
of
EA
i
NO
socket when theta e-up reel disk
Check the reel sensor.
is turning ?
I
YES
Is pulse at pin
(69)
of
IC8801
when
ND
Check between pin
(13)
of
EA
the take-up reel disk is turning
7
t
socket and all the way up to
IC8801,
and
Q8809.
zh;nH;e$e;,;;
R
in&t))eof
lC8803
No
b
Check between pin
(6)
of
lC8803
inputted
?
and all the way up to pin
(11)
of
1
YES
~
IC8801.
I
Is
llVatpin(lO)
of
lC8803?
1
YES
NO
_
r
Check
lC8803
and
‘L’
level of pin
(5)
of it.
Is the correct voltage at the
loading motor terminal ?
.
1
YES
NO
F
Check between
IC8803’and
all
the way up to the loading motor.
Does the loading motor run?
NO
)-
Replace the loading motor.
Replace the cassette cam, gear,
etc.
I
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1
I
Replace
IC8801.
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