Sony VGF-AP1 manual 33

Symptom	Cause/remedy
Unit does not respond	c While the player is connected to a computer, the unit is in data
to controls.	transfer mode and no operation is possible at the player. Disconnect
	the player from the computer.
	c When the player is removed from the cradle or when the USB cable
	is disconnected from the cradle, data about transferred files are
	updated. The update process takes about 40 seconds for every 100
	songs. The actual time will differ depending on the number of
	genres, artists, albums, and total number of songs.
	c If the POWER/HOLD switch on the player or the HOLD switch on
	the remote control is set to HOLD, no operation is possible. Cancel
	the HOLD mode.
The player does not	c If the player has ceased to operate normally, for example due to
operate normally	exposure to static electricity, disconnect the AC adapter, wait about
	30 seconds, and then try the operation again.
	c Press the reset button.
The unit becomes warm.	c When used for an extended period, the temperature of the unit will
	rise. This is not a defect.
No sound.	c Confirm that the headphone connector is inserted correctly.
	c When playback is paused, fast forwarded, or rewound, sound output
	can become faint or stop.
	c If a device is plugged into the LINE OUT connector on the cradle,
	there will be no sound from the headphones.
	c At the lowest volume setting, there is no sound. Raise the volume
	setting.
	c The player cannot play music while connected to a computer. In
	such a case, there will be no sound from a device connected to the
	LINE OUT connector on the cradle. To use the LINE OUT
	connector, disconnect the USB cable.
Cannot change the volume.	c If AVLS is enabled, the volume will not go beyond a certain
	threshold. Check the AVLS setting (page 24).
	c If the POWER/HOLD switch on the main unit or the HOLD switch
	on the remote control is set to HOLD, no operation is possible.
	Cancel the HOLD mode.

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