Sony TA-E88B - Parts Information

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
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