Panasonic SA-PM31P, Service Manual, Page: 70 / 122

(All schematic diagrams may be modified at any time with
the development of new technology)
Note :
S1 Stock switch
S2 Play switch
S3 Bottom switch
S4 Open switch
S5 Change switch
S601 CD 1 switch
S602 CD 2 switch
S603 CD 3 switch
S604 CD 4 switch
S605 CD 5 switch
S606 CD Play/Pause switch
S607 Tape switch
S608 Tuner switch
S609 Track up switch
S610 Track Down switch
S611 Album Up switch
S612 Album Down switch
S613 SSEQ switch
S614 Power switch
S615 Surround switch
S616 AUX switch
S617 CD Check switch
S618 Stop switch
S619 Open/Close switch
S620 CD Change switch
S621 REV switch
S622 FWD switch
S623 REC switch
S701 REST switch
S971 Mode switch
S972 Half switch
S973 CR02 switch
S975 Recinh_F switch
S1901 Tape Eject switch
VR600 Volume VR
· 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
<< >> : Rec
(( )) : CD
< > : FM
( ) : AM
· Importance safety notice :
Components identified by mark have special
characteristics important for safety. Furthermore, special
parts which have 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.
· 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.
16 Notes of Schematic Diagram
70
SA-PM31P / SA-PM31PC