Technics SL-P111 - Page 21

m@
SCHEMATIC
DIAGRAM
1
2
3
4
5
6
(This schematic diagram may be modified at any time with development of new technology.)
OPEN/CLOSE cnao2 e402
Notes:
nero
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2SD973A
aT
OPTICAL
PICKUP
1.
$1:
Power
switch
in
“on”
position.
,
ete
<
ar
eee
2.
$101
:
Disc
holder
open/close
detection
switch.
2,
3. $401 : Open/close switch. A as MOTOR DRIVE SPEED sensor ey
4.
$402
:
Repeat
switch.
(D5
403
Om)
me
5.
$403
:
Time
mode
select
switch.
ECADING
2SB793A
cts
ea
cmiory
nae
eee
a
a,
6. $404 : Memory switch.
7. $405 : Backward skip switch.
8. $406 : Forward skip switch.
9.
$407
:
Stop/clear
switch.
bal
10. $408 : Play/pause switch. REMOTE o
11. The voltage value and waveform are the reference voltage of this unit measured by DC 6
electronic voltmeter (high impedance) and oscilloscope on the basis of chassis. O Aesth
Accordingly,
there
may
arise
some
error
in
voltage
values
and
waveforms
depending
upon
KT
12
SYSTEM
CONTROL
2SD973A
the
internal
impedance
of
the
tester
or
the
measuring
unit.
B
Tse
aoe
casi
* The parenthesized are the values of voltage generated during playing (Test disc 1kHz, 0408 9409 MNI5261PDU 0142, 162,182
L+R,
0dB),
others
are
voltage
values
in
stop
mode.
UN4112
UN4212
9
2SB793A
12. Important safety notice:
Components identified by A, mark have special characteristics important for safety. When 7
replacing
any
of
these
components,
use
only
manufacturer's
specified
parts.
gS
REMOTE
DATA
‘ae
Iclo4
10K
13.
—————:
Positive
voltage
lines
and
negative
voltage
lines.
;
PROCESSING
aie
Azo
_|
:
Audio
signal
lines.
100
ial
ex 05 o> r
betel fs RIGS
Caution!
Qi62
3.9K
IC and LSI are aensitive to static electricity. Cc
Secondary trouble can be prevented by taking care during repair.
Cover the parts boxes made of plastics with aluminum foil.
Ground the soldering iron.
Put a conductive mat on the work table.
®Do not touch the legs of IC or LSI with the fingers directly.
@ Internal connection of FL
¢
Grid
connection
diagram
;
Rubee
|
Step
QO}
-a.
ee te
$40 PLAY,
/ 5 0
C4) voo o2s6ue V88C)
REPEAT PAUSE
A
a 3
oO S
¥ 5 g
$403 ~ : | =
TIME 733
ams a
$405 | 5406 q ¢ MNI280 -R [7]
R.SKIP | F.SKIP
Sates
(as
|
=a
ae wena ae
“8 ae
9
&
es
a
iat
cae
———
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E
S
uae?
+
3
|
d
:
e)
UN4II2
a
KEY MATRIX R389 270K
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ee Le
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ge ioe sr LI
BERR SRARRBERRERE Ee. an Ic381 j
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F
bdaooddeod
66606666bb¢
bd
SPINDLE
MOTOR
CONTROL
' 66h g 56 f @ 46 6 36 ¢ b 2G 0 IG NCF F 0354
2SD973A
—
29
—
—
30
—