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Teac A-400 - Head and Pinch Roller Replacement

Teac A-400
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2-5.
HEAD
REPLACEMENT
2-5A.
Record/Playback
Head
1
Remove
the
Cabinet
and
the
Front
Panel.
(See
Section
2-1,
2-2}
Open
the
Cassette
Holder
door
to
the
45
degree
position
by
pushing
the
EJECT
Lever
to
the
right,
and
to
the
full
85
degree
position
by
pushing
the
door
to
the
left.
o.
the
Head
Protector
Ga)
by
taking
off
the
2
screws
Unsolder
the
wires
from
the
head
terminal
pins
@).
Remove
the
Head
@
by
taking
off
the
nut
6)
and
the
screw
6.
as.
PINCH
ROLLER
shown
in
Fig.
7.
2-5B.
Erase
Head
1,
oP
oN
2-6.
Repeat
steps
1,
2
in
2-5A
above.
(Record/Playback
Head)
Place
the
right
Rotary
Lever
in
the
PLAY
mode.
Unsalder
the
wires
from,
the
head
terminal
pins
@.
Remove
the
Head
(8)
by
taking
off
the
2
screws
@).
Re-solder
each
head
wire
to
the
newly
replaced
head
as
shown
in
Fig.
7.
NOTE
.
After
replacing
the
head
and
adjusting
its
azimuth
(See
Section
4-2-1),
secure
the
screws
and
the
nut
with
a
drop
of
locking
paint.
.
Connecting
the
wires
to
the
head
terminal
pins
should
be
done
quickly
to
prevent
breaking
of
internal
wires
of
the
head
due
to
overheating.
PINCH
ROLLER
REPLACEMENT
Remove
the
Cabinet
and
the
Front
Panel.
(See
Section
2-1,
2-2)
Qpen
the
Cassette
Holder
door
to
the
45
degree
pasition
by
pushing
the
EJECT
Lever
to
the
right,
and
to
the
full
85
degree
position
by
pushing
the
door
to
the
left.
Remove
the
Spring
from
the
Pinch
Roller
(1)
with
the
other
end
of
this
spring
remaining
attached
to
the
Head
Base
Plate
(2).
Remove
the
E-ring
@®
slowly
fram
the
pivot
pin
4).
Remove
the
Pinch
Roller
Ass’y
D
from
the
pivot
pin
2
At
this
time,
the
work
is
made
easier
by
pushing
the
EJECT
Lever
to
the
right.
:
Retain
the
Spring
(5)
and
remember
to
re-install
it
when
replacing
the
Pinch
Rolfer.
NOTE
Make
sure
that
the
arm
fits
properly
into
the
guide
(7)
in
the
Pinch
Roller
Ass’y
as
shown
in
Fig.
6.
BSA
M2x4
y
Wes
Oe
ey
we
NS
&
oe
2-BSA
M2x4
9
ERAS
2-PSA
M2.6x%4
Fig.
6
Heads/Pinch
Roller
Replacement
ERASE
HEAD
REC/PLAY
HEAD
T-417
Fig.
7
Head
Wiring
Diagram
6
NOTE:
For
assembling
hardware
shape
identification,
see
ASSEMBLING
HARDWARE
CODING
LIST
on
the
Parts
List.

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