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Table 4-4-1
Defective Analyzing List
5. Remove the claw securing the main unit (5).
Loading operation is not performed.
Loading motor does not rotate
Check foading motor whether it turns by
{Loading motor is defective or circuit is
the outer power supply (12.5V).
upward.
detective.)
REW operation is defective,
Pinch is not released.
Others: REV/FF is not performed.
Top bracket (13)
Others: REV/FF is detective.
Capstan motor does not rotate.
Check capstan motor.
(Capstan motor is defective or circuit is
detective.)
REVIEW is not performed
Main brake is not released. (ON)
Check mechanical position.
T sott brake is not actuated .
idler does not turn.
Pinch does not press.
FFC (8)
Capstan motor does not rotate.
Check capstan motor.
(Capstan motor is defective or Circuit is
defective.)
Terminal board (11)
Siot-in is not performed.
<General>
Check mechanical position.
Cassette can not be inserted.
When the F/L is mounted on the
ca
mechanical deck,the position is not correct
Main unit (5)
FFC (8)
Capstan servo does not work.
Capsian motor is defective.
Check capstan motor.
|
i
Capstan servo is uneven.
Screw (1§}——+-}
i
Tape speed is fast.
ACE head control output is defective.
Check ACE head.
'
Ree! belt (14)
Tape speed is slow
(Circuit is detective.)
Check CTL output.
H
|
Tape speed is uneven
FG pulse is not output.
Audio output does not come out.
ACE head is defective
Check ACE head. Check CTL output.
.
4
Audio output is small.
Sub main unit (7)
Audio output variation is large
Tape transport adjustment is not defective.
Pertorm tape transport adjustment again
Screws (3
Audio output is uneven.
after confirming tape transport condition.
:
Audio distortion
Audio noise.
Hi-Fi head (cylinder) is defective
Check cylinder. Check whether B+14V is
Others: Audio is defective.
(Circuit is defective.)
suppired.
Front panel (4)
KDB1 unit (6)
Treatment: If the mechanical is found out to be detective according to the procedures described above. perform the following treatment.
+Misassembling, mechanical phase mismatch ....... Repair correctly.
-Parts detect, parts damage
.... Replace parts
If the mechanical is found out not to be defective according to the procedures above. check the circuit(s}.
§——_____—_—
Screw (10)
Fig. 5-1-1
2-6
2-7
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