Self-diagnosis display (DSC-W730)
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There is trouble with the camera’s hardware. Turn the power off and on again.
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The camera cannot read or write data on the memory card. Try turning off and on the camera again, or taking out and inserting the memory card several times.
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The internal memory has experienced a format error, or an unformatted memory card is inserted. Format the internal memory or the memory card. [Details]
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The inserted memory card cannot be used with the camera, or the data is damaged. Insert a new memory card.
E:62:
E:91:
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A camera malfunction has occurred. Initialize the camera, then turn the power on again. [Details]
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There is a malfunction when writing or deleting data. Repair is required. Contact your Sony dealer or local authorized Sony service facility. Be prepared to give all numbers in the error code beginning from the E.