Sony GDM-F400 Symptom, is visible, Check these items, power is turned on, Picture is ghosting, Color is not uniform, shadows at the edges, White does not look white

Symptom	Check these items
Picture is ghosting	•	Eliminate the use of video cable extensions and/or video switch boxes.
	•	Check that all plugs are firmly seated in their sockets.

Picture is not centered or sized properly

•Press the ASC button (page 9).

•Adjust the size (page 11) or centering (page 11). Note that some video modes do not fill the screen to the edges.

Edges of the image are curved	•	Adjust the geometry (page 12).
Wavy or elliptical pattern (moire)	•	Cancel the moire (page 13).
is visible	xProblems caused by the connected computer or other equipment

	• Change your desktop pattern.

Color is not uniform	•	Degauss the monitor* (page 14). 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.
	• Adjust the landing (page 13).

White does not look white	•	Adjust the color temperature (page 12).
	• Check that the five BNC connectors are connected in the correct order (from left to right:
		Red-Green-Blue-HD-VD) (page 6).

Letters and lines show red or blue	•	Adjust the convergence (page 13).
shadows at the edges

Monitor buttons do not operate	•	If the control lock is set to LOCK, set it to UNLOCK (page 14).

USB peripherals do not function	•	Check that the appropriate USB connectors are securely connected (page 8).
	•	Check that the 1 (power) switch is in the “on” position.
	xProblems caused by the connected computer or other equipment
			EN
	•	Check that the power of any self-powered USB compliant peripheral devices is “on.”	EN
	• 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.
	• 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 three 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.

While the monitor is receiving a video signal, press and hold the joystick for more than three seconds to display this monitor’s information box.

Example

INFORMATION

MODEL : GDM F500

SER NO : 1234567

MANUFACTURED : 1998-52

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

•Model name: GDM-F400, GDM-F500

•Serial number

•Name and specifications of your computer and graphics board.