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.
Text excerpt from page 8 (click to view)
AV-20920 â¢ AV-20921
C-13910 â¢ C-13911 C-20910
CHANGING THE BATTERIES
Be sure to use only size AA batteries.
1 2 3
Push down or raise the latch on the remote's back cover to remove it. Insert the two supplied AA batteries, carefully noting the â+â and âââ markings on the batteries and remote control. To avoid a short circuit, insert âââ end ï¬rst. Snap the cover back into place.
Ã If the remote control acts erratically, replace the batteries. Typical battery life is usually about six months to one year. Ã We recommend alkaline batteries for a longer battery life. RM-C754/RM-C751 USERS NOTE: When you change the batteries, try to complete the task within three minutes. If it takes longer than 3 minutes, the remote control codes for your VCR and/or Cable box will have to be reset (page 10).