Schematic Diagram - Panasonic SA-AK18 Service Manual

15 Schematic Diagram

(All schematic diagrams may be modified at any time with the
development of the new technology)
Note:
S501 Voltage selector switch
S701 Reset switch
S602 AUX select switch
S603 Deck 1 eject switch
S604 CD Manager switch
S605 Band/Tuner select switch
S606 Tape Edit switch
S607 Disc 5 eject switch
S608 CD select switch
S609 Rec/Stop select switch
S610 Disc 5 select switch
S611 Tape/Deck select switch
S612 Reverse Mode select switch
S613 Disc 4 eject switch
S614 EQ adjust down switch
S615 V.Bass switch
S616 Deck 2 eject switch
S617 Disc 4 select switch
S618 EQ adjust left switch
S619 Display, Demonstration switch
S620 Reverse play, Tune/time adjust down
switch
S621 Clock, Timer select switch
S622 EQ adjust up switch
S623 Disc 3 eject switch
S624 Karaoke select switch
S625 Play timer/Rec timer select 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.
No mark : Playback
• Importance safety notice:
Components identified by
purposes of fire-retardant (resistors), high-quality sound (capacitors), low-noise (resistors), etc. are used. When replacing any
of components, be sure to use only manufacturer´s specified parts shown in the parts list.
Caution!
IC, LSI and VLSI are sensitive to static electricity.
Secondary trouble can be prevented by taking care during
repair.
<< >> : Rec < > : FM
mark have special characteristics important for safety. Furthermore, special parts which have
S626 EQ adjust right switch
S627 Disc 3 select switch
S628 Economy Mode switch
S629 Stop,Tune Mode select switch
S630 Disc 2 eject switch
S631 Random play switch
S632 FWD, Memory set switch
S633 Disc 2 select switch
S634 FWD play/pause, Tune/Time adjust up
switch
S635 Disc 1 eject switch
S636 Disc 1 select switch
S637 REW, FM Mode/BP select switch
S638 Power switch
S639 3D AI EQ switch
S951 Deck 1 Mode detect switch
S952 Deck 1 Tape detect switch
S953 Deck 1 CrO2 detect switch
S971 Deck 2 Mode detect switch
S972 Deck 2 Tape detect switch
S973 Deck 2 CrO2 detect switch
S974 Deck 2 Record detect switch
S975 Deck 2 Record detect switch
SW1, SW2 Tray position switch
SW3 Tray open switch
SW4 CD offset detect switch
SW5 Spindle bottom position detect switch
SW600 Sound Equalizer select switch
VR600 Volume control
VR601 MIC level control
(( )) : CD
• Cover the parts boxes made of plastics with aluminium foil.
• Put a conductive mat on the work table.
• Ground the soldering iron.
• Do not touch the pins of IC, LSI or VLSI with fingers directly.
33
SA-AK18
( ) : AM