hello my name is ***** ***** I am a Roland certified technician. Replacing the battery is not hard to do but there are several things you need to consider. 1) If you have made any changes to the basic setting's those would have been saved in the memory and if you remove the battery they will be lost. So back up the memory first. again.. BACK UP THE MEMORY FIRST. 2) turn the unit upside down and remove the bottom cover. 3) the battery is a coin type "CR2032" You can get them at almost any drug or grocery store. It should be in a socket on the main computer board. 4) pull the old battery out and put the new one in. BE CAREFULL NOT TO SHORT OUT THE NEW BATTERY AS YOU INSTALL IT. 5) reinstall the bottom. 6) reload the memory.
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