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IPL-Ls0o
=» Arm Elevation Operation
1.If
the arm
elevation
switch
(S4) is pressed
while
a record is being played (with the arm
elevation down)
IC1 pin 32 is switched to H
level and pin 38 to L level
(IC6 pin 8 is also
PD6005
LEAD
IN FF
OUTPUT
LEAD OUT
th
Tonearm
ee
<j
drive cotl
a
1--<g-—
-
cae 2} LEAD OUT FF
{ig} MOTOR stop
TS) Sureur
ae
fia] SPEED SELECTOR
US ouput
Lead in
IND
LEAD IN IND
LED
ert ) output
igo out
IND $
BUY y*
LEAD OUT IND
SF OUTPUT
17cm IND
Seay OA [17]
17 em INO
LEO
£
30m IND
acer 30 em IND
LED
Repeat IND
4.074 Cy )= aol REPEAT
LED
Y
OUTPUT
switched to H level and pin 7 to L level), result-
ing in the geared motor
starting to rotate
in
the up direction.
2. Since arm elevation is switched up, the tonearm
will start to rise.
And since IC6 pin 7 has been
switched to L level, the up indicator LED (D15)
will be turned on.
3. As the geared motor
continues
to rotate, the
elevation
cam
pushes against the up detector
switch
(S9), resulting in the application of L
level to IC1 pin 34.
4. Upon reception of this signal, IC1 pins 32 and
33 are switched to H level (and IC6 pins 7 and
8 to L level), thereby stopping the geared motor.
The
tonearm
is thus left in the up position,
and record play is suspended.
The
tonearm
indicator
LED
(D15)
will
remain on as long as IC6 pin 7 is held at L
level.
ARM REST
SENSOR
INPUT
[29]
END SENSOR
INPUT
DOWN SENSOR
INPUT
SENSOR
INHIBIT
OUTPUT
SW INPUT
LOCATION IN|;
SW INPUT
oh 56
switch
a
ss
re
4 START/STOP
switch
a
34
EV INPUT
|25}-—O
O——#EV
switch
<>
s3
—O
O—+
Repeat swiich
cs $2
/K——
Size selecior
switch
SIZE SELECTOR
SNPUT
SPEED SELECTOR
INPUT
SI
—
Speed selecior
switch
Fig. 4-1 PD6005 Pin function
10
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