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POCULLIOEEEOLEDL EEE PLO TTLEDIOCETEIOOBLO LEDER: ELEEOREILELOLORTLE
MOTOR
. TAKE-UP TORQUE
AT VARIOUS MODES
AND
TORQUE
MEASURING
METHOD
(Refer to Fig. 3)
As shown in Fig. 3, set a cassette torque meter on
cassette base, and take a reading
of the indication
at each respective mode.
Playback mode
40 to 65 grm-cm
Fast Forward mode
70 to 130 grm-cm
Rewind mode
70 to 130 grm-cm
In case specified take-up torque cannot be attained,
Playback mode:
replace whole tension arm
block comp.
Fast Forward or Rewind mode:
replace idler
A comp.
. TAPE SPEED ADJUSTMENT
(Refer to Fig. 4)
Playback a 1,000 Hz pre-recorded test tape and adjust
tape speed adjustment screw to obtain a tape speed
of 1,000 Hz +1%.
Ss
as
ae:
rTP
LCC
Ld Abdi
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dddhdddiddidddididld
AE
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cael
MOTOR PULLEY
SET
SCREW
0.1 to 0.3mm
FLYWHEEL THRUST
LOOSE
PLAY ADJUSTMENT SCREW
Fig. 7
. PINCH ROLLER PRESSURE
MEASUREMENT (Refer to Fig. 5)
At playback mode, pull back the pinch roller with a
spring gauge until the pinch roller separates from
the capstan by about 1 mm to 2 mm and then gently
return.
Take a reading of the spring gauge indication
at the moment the pinch roller touches the capstan
and begins to rotate.
Specified Pinch Roller Pressure: 350 +50 grm
In case specified pressure cannot be attained, replace
the pinch roller spring.
. ADJUSTMENT
OF
GAP
BETWEEN
THE
PINCH
ROLLER
ARM
AND
STOPPER
(Refer to Fig. 6)
Adjust by bending the pinch roller stopper so that a
0.5 to 2.0 mm
gap is definitely obtained between
the pinch roller arm and the pinch roller arm stopper
when the machine is set to play mode.
.
FLYWHEEL THRUST LOOSE PLAY
ADJUSTMENT (Refer to Fig. 7)
Adjust by turning flywheel thrust loose play adjust-
ment screw to obtain a 0.1 to 0.3 mm of loose play
when the flywheel is moved
as indicated by the
arrow mark.
Paint lock the adjustment screw.
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