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In my humble “Opinion” take it to service center only if there is a complaint. Normal cleaning is blowing off the dust on lens glass and camera body by using a Rocket Duster available at Amazon, Use a Shaving brush to brush off the dust on camera body. Use soft cloth to wipe. That’s all is needed. Happy using.
Never try dusting with either lens back end or camera with the hole open. Better to keep the lens on the camera while doing dusting.
I am open for correction.