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square tantalum capacitor
ce
Fig, 18.
1-3-3.
Mounting of Components
When mounting the components on the circuit board,
take
care
that
they
do
not
touch the shafts of
switches;
variable
resistors;
etc.
Be
particularly
careful
to prevent
any
contact
between
the com-
pound FET covered by metal case, and the ATTENU-
ATOR
shaft, and
the diode leads and
BALANCE
control shaft.
Fig. 16
1-3-4,
Cam Equipped Switch Indication
The selector switches employed in. TA-E88/E88B are
each equipped with a'cam, and a number (3. or 4) of
slide. switch
elements
which
move.
in. an' irregular
fashion when the cam rotates.
As.an example of this arrangement, S1L (FUNCTION
PHONO INPUT) is shown in Fig. 17.
There
are a total of ten switches employed
in the
TA-E88/E88B,°
making
it. impossible
to 'determine
which.
points are making contact at. different select
positions. For this reason, both
the schematic. dia-
gram and the mounting diagram include special charts
of the
contact
patterns
for each
switch position.
Bato wie
| TA-E88/E88B
TA-E88/E88B |
J
Note
that these charts indicate the position of the
blue
switch
link heads
as viewed
from
the
com-
ponent side, thereby simplifying checking operations
as well.
FUNCTION
oo
PHONO 14
400. ———
HEAD
AMP
<
:
aq
LOW. FILTER
ISHz.42dB/OCT
_ PHONO2—\
movement of switch contacts viewed from
component side
Fig. 18
SIL-1 \
S{L-2 | selector links when
SIL-3
setting SIL to. step 3
(top view}
SIL-4
:
SIL (FUNCTION PHONO Switch} viewed from
component side
Fig. 19
1-3-5.
Order of Parts in Switch Assemblies
cam
A
typical
switch
assembly,
including
the
switch,
the joint, front panel
and selector knob, is shown
in Fig. 20.
Whenever
such
switch
assemblies
are
taken
apart,
the pesition of parts must be noted, either by mark-
ing each part, or by some other method.
link
1-3-6.
Switch Angle Alignment
(See Fig. 21.)
|
This switch is turned on or off through the switch
|
links and
switch
cam.
A feature
of the switch
is
switch elements
the
absence
of click
stops
which.
determine
the
actual switching position. Therefore, it is necessary
to correctly align the selector knob precisely with its
corresponding switch position.
Fig. 217
a
:
joint
knob
switch
i
ai
circuit board
front panel
detent selector shaft
Fig. 20
—10—
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