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Verfügbare Sprachen
Verfügbare Sprachen
The cassette tape fails to come out.
Does the capstan motor start
NO
when the EJECT button is pressed?
YES
Does the take-up reel disk turn
when the capstan motor is
running?
YES
Are pulses applied at pin (69) of
1C701 when the take-up reel disk is
turning?
YES
Isa "H" (about 1.7V) level applied
NO
at pin (6) of {C704 when a reel
pulse has been inputted?
YES
\s the voltage about 10V sent out
NO
of pin (10) of 1C704?
YES
Is the specified voltage applied at
NO
the loading motor terminal?
YES
;
NO
Dose the loading motor run?
VES
Replace cassette cam, gear, etc.
See FLOW CHART NO. 12.
(CAPSTAN MOTOR TROUBLE
SHOOTING)
Check reel disk and reel drive unit.
Check take-up reel sensor and all
the way up thru to 1C701.
Check pin (80) of 1C701.
Check 1C704.
Check between IC704 and all the
way up thru to the loading motor.
Replace loading motor.
No power is turned on.
Are key data pulses applied at pin
NO
(18) of 1C701?
,
Check IC5001 and 1C701, and all
the way thru between them.
NO
(22) of 1C5001, respectively?
YES
Does power control (H) signal at
pin (35) of 1C701 change from "H*
to "L" level?
YES
Do the base of Q960 and Q961
change from about 9.0V to about
8.3V?
YES
Is 18V sent out of the collectorof
| NO
Q960 and Q961 transistor?
YES
Does the base of Q958 change
NO
from OV to 6.2V?
YES
Is 5.5V sent out of the collector of
[NO
Q958?
YES
Check peripheral circuits for poor
soldering.
Check IC701.
Check Q960, Q961 and all the way
up thru to 1C701.
Check Q960, Q961 and the AT18V
line.
Check Q958 and all the way up
thru to Q960 and Q961.
Check Q958 and the AT5.5V line.
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