Technics SL-PJ37A

(Parts
list
on
pages
32
~
34,
40,
41.)
(This
schematic
diagram
may
be
modified
at
any
time
with
development
of
new
technology.)
Notes :
°$1 : Power switch in “on” position.
¢ $601 ~ 612 : Numeric (+10, 0, 1~9) switches.
$601: 0, S602: 1, S603: 2, S604: 3, S605: 4,
S606: 5, S607: +10, S609: 9, S610: 8, S611: 7,
$612: 6
$613 : Play (B PLAY) switch.
°$614 : Skip (_ K@ ) switch.
°$615 : Search (<q ) switch.
$616 : Program (PROGRAM) switch.
° $617 : Auto cue (A CUE) switch.
$619
:
Stop
(MM
STOP)
switch.
*$620 > Skip (| Bl ) switch.
$621 : Search ( BP ) switch.
*$623 : Tape side select (SIDE A/B) switch.
*$626
:
Disc
holder
open/close
(4
OPEN/CLOSE)
switch.
$627 : Pause (II PAUSE) switch.
* $628 : Repeat (REPEAT) switch.
¢ $629 : Clear (CLEAR) switch.
* $630 : Edit (EDIT) switch.
¢ $631 : Time mode select (TIME MODE) switch.
*$1001 : Tray (OPEN/CLOSE) switch.
¢ 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, OdB), others are voltage values
in stop mode.
¢ Important safety notice:
Components identified by A mark have special characteristics
important for safety. When replacing any of these components,
use only manufacturer’s specified parts.
=< >—/--< >: Positive voltage lines and negative
voltage lines.
: Audio signal lines.
Caution!
IC and LSI are sensitive to static electricity.
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 pins of IC or LSI with fingers directly.
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