Technics SA-DA15, Руководство по обслуживанию, Страница: 48 / 106

10 Schematic Diagram
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(All schematic diagrams may be modified at any time with the development of new technology.)
Notes:
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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 waveformsdepending upon the internal
impedance of the tester or the measuring unit.
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Importance safety notice:
Components identifed 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. Whenreplacing 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.
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Cover the parts boxes made of plastics with aluminium foil.
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Put a conductive mat on the work table.
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Ground the soldering iron.
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Do not touch the pins of IC, LSI or VLSI with fingers directly.
S301 Slide Switch
S901 Power Switch
S902 Speaker B Switch
S903 Band Switch
S904 FM Mode Switch
S905 Tuning Down Switch
S906 Tuning Up Switch
S907 Memory Switch
S908 Preset Switch
S909 DSP Sound Mode Switch
S911 Speaker A Switch
S912 Bi-Wire Switch
S913 VGCA Switch
S914 DVD 6CH Input Switch
S917 Digital Input Switch
S918 Tape Monitor Switch
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29-11-2012 file:///H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15...