Sony HMD-A400 check, Symptom, Controller, •Serial number, Check these items, power is turned on, may lose uniformity, USB supplement disk, 5. Click on Refresh

Symptom	Check these items
Color is not uniform	• Degauss the monitor* (page 11). If you place equipment that generates a magnetic field,
	such as a speaker, near the monitor, or if you change the direction the monitor faces, color
	may lose uniformity.
White does not look white	• Adjust the color temperature (page 11).
Letters and lines show red or blue	• Adjust the convergence (page 10).
shadows at the edges
USB peripherals do not function	• Check that the appropriate USB connectors are securely connected (page 7).
	• Check that the ! (power) switch is in the “on” position.
	xProblems caused by the connected computer or other equipment
	• Check that the power of any self-powered USB compliant peripheral devices is “on.”
	• Install the latest version of the device driver on your computer. Contact your device’s
	manufacturer for information about the appropriate device driver.
	• If your USB compliant keyboard or mouse does not function, connect them directly to
	your computer, reboot your computer, and make any necessary adjustments to the USB
	settings. Then reconnect the keyboard or mouse to the monitor. If you connect a keyboard
	or mouse to the USB connectors and then boot your computer for the first time, the
	peripheral devices may not function.
	• For customers using Windows 95
	1. Right-click on My Computer and select Properties.
	2. Click on the Device Manager tab. Scroll down and select Universal Serial Bus
	Controller.
	If Universal Serial Bus Controller does not appear, you need to load a USB supplement
	disk. Contact your computer’s manufacturer for more information about obtaining a
	USB supplement disk.
	3. Select Generic USB Device from the USB controller list and click on Properties.
	4. If there is a check in the box next to “Disable in this hardware profile,” remove the
	check.
	5. Click on Refresh.
A hum is heard right after the	• This is the sound of the auto-degauss cycle. When the power is turned on, the monitor is
power is turned on	automatically degaussed for five seconds.

*If a second degauss cycle is needed, allow a minimum interval of 20 minutes for the best result. A humming noise may be heard, but this is not a malfunction.

Displaying this monitor’s name, serial number, and date of manufacture

1Press the center of the control button.

The main MENU appears on the screen.

2Move the control button m/M to highlight

LANGUAGE/INFORMATION and press the center of the control button.The LANGUAGE/INFORMATION menu appears on the screen.3Move the control button m/M to select .This monitor’s information menu appears on the screen.

Example
	LANGUAGE / I NFORMAT I ON
	MODE L : HMD - A 4 0 0
	SER I A L : 1 2 3 4 5 6 7 8
	MANUF ACTURED : 2 0 0		0 . 5 2
	SE L ECT	EX I T

If the problem persists, call your authorized Sony dealer and give the following information.

•Model name: HMD-A400•Serial number•Name and specifications of your computer and graphics board.

14