Panasonic SA-DT300E, Руководство по обслуживанию

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10 Schematic Diagram Notes

This schematic diagram may be modified at any time with the development of new technology.
Notes:
S901:
Power standby/on switch ( )
S902:
Select switch (SELECT)
VR901:
Volume control VR (VOLUME)

Indicated voltage values are the standard values for the unit measured by the DC electronic circuit tester (high-
impedance) with the chassis taken as standard. Therefore, there may exist some errors in the voltage values,
depending on theinternal impedance of the DC circuit tester.
No mark
: Power ON (FM or AM)

Important 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.

The supply part number is described alone in the replacement parts list.

Voltage and signal line
: Positive voltage line
: Negative voltage line
: Audio signal line
: AM signal line
: AM OSC signal line
: FM signal line
: FM OSC signal line
Caution!
IC and LSI are sensitive to static electricity.
Secondary trouble can be prevented by taking care during repair.
Cover the parts boxes made of plastics with aluminum foil.
Ground the soldering iron.
Put a conductive mat on the work table.
Do not touch the legs of IC or LSI with the fingers directly.
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