Sony MHC-GZR999D Operating Instruction page 115

MP files or folders on the USB
device cannot be erased.
 Check if the USB device is
writeprotected.
 The USB device was disconnected
or the power was turned off during
the erase operation. Delete the
partially-erased file. If this does not
fix the problem, the USB device may
be broken. Refer to the operating
instructions supplied with the USB
device for how to deal with this
problem. If the problem persists,
contact your nearest Sony dealer.
Are you using a supported USB
device?
 If you connect an unsupported USB
device, the following problems may
occur. See "Compatible devices
with this system" (page 132) for the
supported device types.
 The USB device is not recognized.
 File or folder names are not
displayed on this system.
 Playback is not possible.
 The sound skips.
 There is noise.
 A distorted sound is output.
 Transferring or recording stops
before it is finished.
"OVER CURRENT" appears.
 A problem has been detected with the
level of electrical current from the
(USB) port. Turn off the system and
remove the USB device from the
(USB) port. Make sure there is no
problem with the USB device. If this
display pattern persists, contact your
nearest Sony dealer.
There is no sound.
 The USB device is not connected
correctly. Turn off the system and
reconnect the USB device, then turn
on the system and check if "USB
MEMORY" lights up.
There is noise, skipping, or distorted
sound.
 Turn off the system, then reconnect the
USB device.
 The music data itself contains noise,
or the sound is distorted. Noise may
have entered during the transfer or
recording process. Delete the file, and
try transferring or recording again.
 The bit rate used when encoding audio
files was low. Send audio files with
higher bit rate to the USB device.
The USB device cannot be connected
into the (USB) port.
 The USB device is being connected
backwards. Connect the USB device in
the correct orientation.

Continued
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