Technics SL-PS740A - Schematic Diagram

m SCHEMATIC DIAGRAM
(Parts list on pages 34~37)
Notes:
eS601~612 : Numeric(>10, O~10) switches
©S613
©S614
©S615
0S616
©S617
eS618
eS619
°S620
0S621
©S622
©S623
©S624
©S625
©S626
©S627
©S628
eS629
S630
S631
© S632
© S633
©S634
eS635
eS651
°S1001
parts list.
lines.
/
: Play (» PLAY) switch
: Skip (K4< SKIP) switch
: Search (<< SEARCH) switch
: Program (PROGRAM) switch
: Disc link (DISC LINK) switch
:
Output
level
meter
on/off
rue
ia
lp
atatesi
chee
ats
Soba
(LEVEL
METER)
switch
v7
jes
el
wspza
:
Stop
(li
STOP)
switch
:
R3562_
120K
ae
;
FL
: Skip (>| SKIP) switch
: Search (> SEARCH) switch
: Recall (RECALL) switch
: Tape side select (SIDE A/B) switch
: Random (RANDOM) switch
: Time fade (TIME FADE) switch
: Disc tray open/close (4 OPEN/CLOSE) switch
: Pause (ff! PAUSE) switch
: Repeat (REPEAT) switch
: Clear (CLEAR) switch
: Tape length (TAPE LENGTH) switch
: Time mode select (TIME MODE) switch
: Peak search (PEAK SEARCH) switch
: Level control (LEVEL +) switch
: Level control (LEVEL —) switch
: Auto cue (AUTO CUE) switch
: Power “STANDBY(Q)/ON”
: Tray open/close switch
This schematic diagram may be modified at any time with the
development of new technology.
¢ 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.
*The parenthesized are the values of voltage generated during
playing (Test disc 1kHz, L+R, 0dB), others are voltage values in
stop mode.
¢ Important safety notice:
Components identified by AV mark have special characteristics
important for safety. When replacing any of these components,
use only manufacturer's specified parts.
¢ The supply part number is described alone in the replacement
AOPTICAL PICKUP
FOCUS
coiL
RADIAL
MOTOR
$601: 0, S602: 1,S603: 2
S604: 3, S605: 4, S606: 5
$607: >10, S608: 10, S609: 9
S610: 8, S611: 7,S612: 6 SERVO
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PLAY
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482220972587
(TCAO372DP2)
FOCUS/RADIAL DRIVE
-—-—-- : Positive voltage lines and negative voltage
Audio signal lines.
O.5ms. 2V/DIV.
-9 4v—
sits : -18-
To main circuit
on page 20
To main circuit
on page 20