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7-2-2. Torque Check (See Fig. 7-2-2.)
D)
2)
3)
4)
5)
Set the unit to operating
condition
without
a
cassette
inserted
as instructed
in 7-1.
Measure the SUPPLY
REEL TABLE torque in the
REW
mode, and confirm
that
it is 750gcm
or
more.
Perform
this
measurement
keeping
the
torque gauge
in a fixed position with your hand
(locked
torque).
Measure
the
TAKE-UP
REEL
TABLE
torque
in
the F.FWD
mode, and confirm
that it is 600gem
or more
(locked
torque).
Measure
the TAKE-UP
REEL
TABLE
torque
in
the playback
mode (SP tape speed), and confirm
that it is within
80
through
140gcm
(locked
torque).
Measure
the SUPPLY
REEL TABLE
torque
in the
REV
(F-SEARCH)
mode, and
confirm
that it is
within
150 through
240 gcm
(locked
torque).
we,
6)
After confirming that torque readings are within
the
specifications
for
each
mode,
check
the
following :
©)
©)
©
C)
Note]
Note2:
Dirt on
the capstan
motor
and
the REEL
PULLEY
groove.
Deterioration
of the REEL
DRIVE
BELT.
Deterioration of the FRICTION GEAR ASS'Y
felt (torque during
playback).
Wear
and
damage
of the COMPL
CLUTCH
MECHANISM
and the reel drive system gears.
:Items
©, © and @ require
replacement
if
found
defective.
The
measured
value
of torque
during
FF
and
REW
represents
the
value
2 seconds
after
starting.
Torque gauge
Torque gauge adapter
Take-up
reel table
Fig. 7-2-2. Checking REW/FF/PLAY Torque
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