Technics RS-DV290EG Service Manual page 69

- S913: Digital super woofer (DIGITAL S. WOOFER) switch.
- S914, 915: RDS display mode (RDS, PS-DISP, MODE-PTY) switches.
For [EE] area.
S914, 915: KARAOKE, Voice mute (KARAOKE, V.MUTE) switch.
For [GN] area.
- S916: Key control (KEY CON) switch. For [GN] area.
- S917: MIC effect (MIC EFFECT, LOUNGE) switch. For [GN] area.
- S918: MIC effect (MIC EFFECT, CHORUS) switch. For [GN] area.
- VR901: Main volume V.R..
- 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
internalimpedanceofthe DC circuit tester.
No mark: Power ON
- Important safety notice:
Components identified by
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
manufacture's specified parts shown in the parts list.
Caution!
- Secondary trouble can be prevented by taking care during repair.
- IC and LSI are sensitive to static electricity.
- 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.
- Voltage and signal lines
: Positive voltage line
: Negative voltage line
: Audio signal line
: Tuner signal line
: MIC signal line
mark have special characteristics
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