Turns out this was not the manual i was looking for. The concertmate 670 keyboard i have is a "Realistic" model made for Radio Shack and none of the diagrams on the owners manual i received matches up. HOWEVER, I must say the service Owners Manual provides was fast and efficient by being available online. The manual was in good readable condition and easily downloaded.
Thank you for your manual It has the basic things to and i use the Oszi for Longer Time.
THX
Text excerpt from page 6 (click to view)
General features
English
Attenuator
Turning the volume down quickly. Press the [ATT] button. Each time the button is pressed the Attenuator turns ON or OFF. When it�s ON, the "ATT" indicator blinks.
� Each setting value is changed with the <Speaker setting> (page 7). First, select the speaker type with the Speaker setting. � When the System Q setting is changed, the Bass, Middle, and Treble set in audio control replace the System Q values.
Audio Control Loudness
Compensating for low and high tones during low volume. Press the [LOUD] button for at least 1 second. Each time the button is pressed for at least 1 second the Loudness turns ON or OFF. When it�s ON, "LOUD" indicator is ON.
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Select the source for adjustment Press the [SRC] button. Enter Audio Control mode Press the [AUD] button for at least 1 second. Select the Audio item for adjustment Press the [FM] or [AM] button. Each time the button is pressed the items that can be adjusted switch as shown below. Adjust the Audio item Press the [4] or [¢] button. Adjustment Item Display Bass level "BAS" Middle level "MID" Treble level "TRE" Balance Fader "BL" "FD"
System Q
You can recall the best sound setting preset for different types of the music.
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Select the source to set Press the [SRC] button. Select the Sound type Press the [Q] button. Each time the button is pressed the sound setting switches. Sound setting Flat Rock Top 40 Pops Jazz Easy Scan of Flat � Easy Display "SQ-1" "SQ-2" "SQ-3" "SQ-4" "SQ-5" "SQ-6" "SCAn"