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 17 (click to view)
Using
the Minute
Timer
Your microwave oven can be used as a kitchen timer. Use the Minute Timer for timing up to 99 minutes, 99 seconds.
NOTES: . To see the time of day while the Minute
l
Timer is counting down, touch AUTO START/CLOCK. If you want to use other Command Pads while the Minute Timer is counting down, touch OFF/CANCEL to cancel the Minute Timer.
1. Enter time to be counted down.
Example for 3 minutes: TOUCH
YOU SEE
cl 3 rl0
cl 0
2. Start countdown.
(display time) counts down set
When the set time ends, a long tone will sound. When you open the door or touch OFF/CANCEL, you will see the time of day.