Notes Of Schematic Diagram - Panasonic SA-PM53E Service Manual

16 Notes of Schematic Diagram

(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 STOP/DEMO switch
S602 MUSIC PORT switch
S603 TUNER/BAND switch
S604 TAPE switch
S605 CD_PLAY switch
S606 POWER switch
S607 CD 5 switch
S608 CHANGE switch
S609 CD_CHECK switch
S610 CD 3 switch
S611 CD 4 switch
S612 OPEN/CLOSE switch
S613 CD 1 switch
S614 CD 2 switch
S615 REC switch
S616 REW switch
S617 H.BASS switch
S618 FWD switch
S971 MODE switch
S972 HALF switch
S973 CR02 switch
S975 RECINH_F switch
S1901 TAPE EJECT switch
S7201 RESET 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.
· Importance safety notice :
Components identified
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.
by mark have special
85
SA-PM53E / SA-PM53EB / SA-PM53EG