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FIG.
2
BOTTOM
VIEW
OF
TRANSPORT
MECHANISM
To
Remove
Amplifier
Chassis
from
Tape
Transport Mechanism
1.
Remove
tape
transport mechanism,
as
des-
cribedin "ToRemove
Tape
Transport
Mech-
anism
from
Cabinet.
"
2.
Remove
pilot lamp
socket
from its
mounting
bracket.
3.
Disconnect ptayback
and
erase
head
connec-
tors,
and
power
socket.
4.
Remove two
screws holding
radio/phono
input
jack
to
motorboard. push bracket
through
hole
in
motorboard.
5.
Remove
hexnutholding
microphone
input jack
to bracket
on
motorboard.
6.
Remove
screws holding
amplifier
chassis to
motorboard.
MECHAN
I
CAL ADJU
STMENTS
Brake
Arms
Right-hand
brahe arm
(65)
and
left-hand
brake
arm
(98) should
engage
thetr drive
pulteys (bl)
and
(124)
vrith
the same
force
and
at the
sime
[ime.
The
brake pads should contact the pulleys with the max-
imumpad
area.
This
is
accomplished by bending the
endof
brat<erelease
slide
(67).
To
gain access
to
the
end
of
brake release
slide (67), remove
main
drlve
pulley
(79).
Tape
Pressure Roller
Tapepressure
roller
(22)
and
capstan
shaft
(1?)
Page
4
controlthepressureonthetape. Thispressure
is
de-
rivedmainlyfrom pressure
roller
arm formed spring
(57)
ontape
pressure
roller
arm
(48).
One of
the
moun-
ting holes
on
pressure
roller
arm formed spring
(b?)
is
slotted
to permit adjustment.
The
springtension
is
determined
by
measuringthe force necessary
to
pull
the tape past capstan shaft
(tT).
With the recorder
stopped
and
Play
push button
depressed,
a
tension
of
32 ounces
should be
required
to
cause
tape
slippage.
Toomuchpressurewill
make the
latch
difficult
to
de-
press in the Play position.
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