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@S801
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20
ST-CH505
21 22
: Tuner source/band select switch
(TUNER/BAND)
: Clock/timer switch (CLOCK/TIMER)
: EQ/SPACE mode ON/FLAT switch
(ON/FLAT)
: EQ/SPACE mode select switch (MODE)
Voice mute switch (KARAOKE)
: V. bass switch (V.BASS)
: Record timer switch (&! REC)
: Play timer switch (@ PLAY)
: External source input select switch (EXT)
: Internal source input select switch (INT)
: Multi-control switch (SET)
: Multi-control switch (A)
: Multi-control switch (¥)
: Multi-control switch (B)
: Multi-control switch (<4)
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 the internal impedance of the DC
circuit tester.
No mark. FM mode (
mode
<
): MW
>: LW mode
®|mportant safety notice:
Components identified by A 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 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.
This schematic diagram may be modified at time with
the development of new technology.
©The supply part number is described alone in the replacement parts list.
Ref. No. Production Parts No. Supply Parts No.
1C6014 BA4558FT1 SVIBA4558F
2801 RCDHC-278-E RCDHC-278