Introduction
Over time, in older pianos like the Digital Piano Optimus Concertmate 980, dust and dirt get under the keys, removing the function of the key.
The issue comes when you can't clean the dust off without disassembling the piano. Although very frustrating, this is very common with older devices and comes with a very simple fix.
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Flip the piano to its backside.
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Remove all the screws on the back of the piano using a Phillips #0 screwdriver.
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Reattach any loose cables.
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Clean any dust from the top of the keys with a vacuum or cotton swab.
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Remove the white keys by pulling them from the top and sliding them down.
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To remove the black keys, pull on the keys first to pull off, then remove the keys entirely.
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Clean all the dust under the keys.
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Clean around the orange tips, making sure they are upright.
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To reassemble your device, follow these instructions in reverse order.
