Technics SL-P202A - Page 19

SL-P202A SL-P202A
Mi
SCHEMATIC
DIAGRAM
1
2
3
4
5
(Parts list
on
pages
41
~ 46.)
BY oPERATION CIRCUIT —Fv¢01 rastocoir
(This schematic diagram may be modified at any time
with development of new technology.) A
Notes:
°$1 : Power switch in “on” position.
$601 : Disc holder open/close (4 open/close) switch.
$602,603 — : Skip (Kd skip/skip PPI) switches.
S602: Ke (R), S603: PP] (F) : 3
$604 : Stop (| stop) switch. efoto meegesre 33
¢ $605 : Pause (MM pause) switch.
es des (p> play) switch. B eis ay
° : Edit tape length (tape length) switch. LL. .--30v
¢ $620 : Tape-side (side A/B) switch. ee
$621 : Disc link (disc link) switch. ee oF
* $622 : Time mode select (time mode) switch. eee ee
° $623 : Programmed-play (program) switch.
° $624 : Clear (clear) switch.
$625 : Recall (recall) switch.
° $626 : Repeat (repeat) switch. iN EDBS REA
° S627 : Auto cue ( ) switch. SYSTEMS CONT ADE
¢ $628 : Random play (random) switch. Cc 33:9
* $629 : Music scan (music scan) switch. KON ONOK
° $630,631 — : Search (¢q search) switches. 12/8/22 |g ne
$630: (R), S631: Pp(F) “hede ba HC-MDIOE
°$1001 : Tray (open/close) switch. CONTROL
¢ The voltage value and waveforms are the reference voltage of
this unit measured by DC electronic voltmeter (high impedance)
and oscilloscope on the basis of chassis.
Accordingly, there may arise some error in voltage values and
waveforms depending upon the internal impedance of the tester
or the measuring unit. D
*The parenthesized are the values of voltage generated during
playing (Test disc 1kHz, L+R, OdB), others are voltage values
in stop mode.
¢ Important safety notice:
Components identified by A mark have special characteristics a 9
important for safety. When replacing any of these components, :| a < 3 “ < ft
use only manufacturer's specified parts. 25 nea SK SER ORK OEE ae
.—<
>—/--<
>--:
Positive
voltage
lines
and
negative
°3
“8
“3
°3
°8
ey)
~
voltage lines.
: : Audio signal lines. as 35 ae
E 32 aBf 387
Caution! S624 $604 $605 $606 $623
IC
and
LSI
are
sensitive
to
static
electricity.
cueans
|
«Storm:
«Pause
mi
|
«
Puaves
|ienocRems
|
inecais)
Secondary trouble can be prevented by taking care during repair. eT Ys SPs Peete 2 r ta
* Cover the parts boxes made of plastics with aluminum foil. crineoce:feore tare fe Seances funerent: [ise Pom) [auto Cue: Hiceeall
* Ground the soldering iron. toe tee lo Loy
¢ Put a conductive mat on the work table. ; ~ 8620, |, $62! | $630. S002, ore eelgse a1 aces
* Do not touch the pins of IC or LSI with fingers directly. tae ae ei [ees fee
F Ed
KEY MATRIX
OF — 22 —-