Teac A-550RX - Reel Torque; Capstan Assembly Thrust

A-SSORX
4
MECHANICAL
ADJUSTMENTS
AND
CHECKS
4-1 REEL TORQUE
Specifications:
1.
Take-up: 40 to 60 g.cm (0.6 to 0.8 02-inch)
Supply: 2 to 6 g.cm (0.03 to 0.08 02-inch)
Fast
Forward:
80
to
150
g.cm
(1.1
to
2.1
02-inch)
Rewind: 100 to 150 g.cm (1.4 to 2.1 02-inch)
Load
the
cassette
torque
meter
on
the
deck
and
read
the
pointer
indication
on
the
dial
scale
for
each
tape
movement
operation.
4-2
PINCH
ROLLER
PRESSURE
1.
2.
Place
the
deck
in
the
PLAY
mode
with
no
tape
loaded.
Attach
the
spring
scale
to
the
hole
in
the
pinch
roller
ass’y
as
shown.
Draw
the
pinch
roller
away
from
the
capstan
shaft
until
the
capstan
shaft
and
the
pinch
roller
are
separated.
Return
the
scale
back
until
the
pinch
roller
just
begins
to
rotate.
The scale should then he reading as per spec.
Specification: 350 g to 450 g (12.3 oz. to 15.9 02.)
~Capstan shaft
Fig. 4-1
4-3 CAPSTAN ASSEMBLY THRUST
Specification: 0.05 mm to 0.15 mm
Hennes Thrust play
Flywheel 0.05mm to 0.15mm
Fig. 4-2
4-4 HEAD BASE PLATE POSITIONNING
1. Set the deck in the PLAY mode.
2.
Push
the
Head
Base
Plate
in
the
direction
of
the
arrow
by
hand
to
check
whether
there
is
any
clearance
between
the
Head
Base
Plate
and
the
stopper
portion
of
the
mechanism
chassis.
3.
If
there
is
any
clearance,
loosen
the
two
screws
on
the
head
base
plate
solenoid
and
position
the
solenoid
so
that
there
is
no
clearance.
See
Fig.
2-3.
Head base plate
Stoper portion of
mechanical
chassis
Push by hand
when in play mode
Fig. 4-3
4-5
MICRO
SWITCH
(A)
ASSEMBLY
CLEARANCE
1. Insert a blank cassette and close the cassette holder.
2. Loosen the two screws on the micro switch (A).
3. Move the switch so that actuator of the switch will contact the
safety lever.
4. Adjust the switch position to get a clearance as shown.
5. Fasten the two screws.
Safety lever
Blank cassette
( T-1556
E
E
m
(o)
2
E
is
o
clearance
Bent-tip of
Safety lever switch brcket
Fig. 4-4