Read Sharp SM-SX100 (serv.man2) Service Manual online
SM-SX100
– 9 –
ADJUSTMENT
Measure the noise distribution between the set output terminals (Lch+, Lch- and Rch+, Rch-), and adjust VRA1 to VRA4. The VRA
adjustment sequence is the same as that of the offset voltage adjustment.
adjustment sequence is the same as that of the offset voltage adjustment.
Measuring instrument: Yokokawa Electric brand SA2400
Measurement range : Refer to Fig. 9-2.
Adjustable range:
Measurement range : Refer to Fig. 9-2.
Adjustable range:
1
250Hz to 100kHz within
±
3dB from the standard noise curve
2
(Noise strength of 125Hz) — (Noise strength of 250Hz) 20dB
AC POWER
SUPPLY
SUPPLY
UNIT
Specter
Analyzer
Analyzer
Speaker terminal
Apply the analyzer between Lch+ and Lch-,
and between Rch+ and Rch-.
Apply the analyzer between Lch+ and Lch-,
and between Rch+ and Rch-.
Figure 9-1
Standard noise floor curve
(Frequency range 1)
(Frequency range 1)
Figure 9-2
20dBV ¨ ”
Click on the first or last page to see other SM-SX100 (serv.man2) service manuals if exist.