Sony MHC-V73D Help Manual page 163

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MHC-V73D
[READING] is displayed for an extended time, or it takes a long time before playback
starts.
The reading process can take a long time in the following cases.
There are many folders or files on the USB device. For details, see "Notes on playable files" in
files on discs/USB
The file structure is extremely complex.
The memory capacity is excessive.
The internal memory is fragmented.
device.
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Playable discs or