(All schematic diagrams may be modified at any time with the
development of the new technology)
Note:
S501 Voltage selector switch
S701 Reset switch
S900 CD manager switch
S901 CD 1 switch
S902 CD 2 switch
S903 CD 3 switch
S904 CD 4 switch
S905 CD 5 switch
S906 Rec/Stop select switch
S907 Rev mode switch
S908 Tape edit switch
S909 Tuner down switch
S910 FM/BP Mode select switch
S911 Memory switch
S912 Tune mode switch
S913 Tune up switch
S920 CD eject switch
S940 AUX switch
S941 Tuner switch
S942 Tape switch
S943 CD switch
Caution!
IC, LSI and VLSI are sensitive to static electricity.
Secondary trouble can be prevented by taking care during
repair.
S944 3D AI EQ switch
S945 Super sound EQ switch
S950 Disc 2 switch
S951 Sub woofer switch
S952 EQ down switch
S953 EQ right switch
S954 EQ left switch
S955 EQ up switch
S956 Power switch
S958 Play/Rec timer switch
S959 Clock timer switch
S960 Karaoke switch
S961 Display/Character switch
S971 Leaf switch
S972 Leaf switch
S973 Leaf switch
S974 Leaf switch
S975 Leaf switch
SW1, SW2 Slide switch
SW4 CD switch
SW5 Lock switch
SW600 Joy Jog switch
VR900 Volume jog control
VR930 MIC level control
• 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 Schematic Diagram
• 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 <>:FM (( )) : CD ():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.
34
SA-AK52
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