Fujitsu PDS4212W-H Cleaning and Maintenance, Handy Tips, Precautions, Cleaning the Screen

CLEANING AND MAINTENANCE

Precautions

Be sure to remove the power plug from the receptacle before cleaning the display.

Be sure not to clean the display using a cloth dampened with volatile solvents, such as benzene or thinner. Such solvents can harm the display’s cabinet, the filter at the screen front, and the remote control. They can also cause paint to come off these sections.

HANDY TIPS

Cleaning the Cabinet and Remote Control

Use a soft cloth for cleaning.

If the cabinet or remote control is heavily stained, soak a soft cloth in a mixture of water and detergent and squeeze it dry before wiping off the stains. Use a soft, dry cloth for final cleaning.

Cleaning the Screen

Clean the screen gently with a soft cloth.

The screen surface is fragile. Never attempt to clean it with a hard material, press on it forcefully, or tap it.

In the event of problems with the display, check the following explanations before contacting your dealer for servicing.

Problem	Action
• Power does not turn ON.	• Check whether the power plug is securely inserted into the receptacle.
• No images are displayed.	• Check cables for disconnection.
	• Check whether the power for all input equipment is ON.
	• Check for connection to wrong terminals or for wrong input mode.
• Remote control does not function properly.	• Check for incorrect battery orientation.
	• Check for dead batteries.
	• Check for distance from the display.
	• Check whether you are pointing the remote control transmitter properly at the display’s
	receiver.
	• Check for any obstacle between the remote control and the display.
• The display makes a snapping sound.	• This sound is produced when the cabinet expands or contracts due to variations in
	temperature. This sound does not indicate that the display has a problem.
• The display makes a buzzing sound.	• The display has a fan to maintain the temperature of internal components at a constant
	level. This sound is produced by the fan as it rotates.
• There are spots on the screen.	• Check whether your AV equipment is affected by interference from automobiles, trains,
	high-voltage transmission lines, neon signs or other potential sources of interference.
• Degraded colors/tints	• Check whether all image adjustments have been properly made.
	(See “Adjusting Images” on P. E-26–E-27.)
• Improper screen position/size	• Check whether screen position and size have been properly adjusted.
	(See “Adjusting Screen Position and Size” on P. E-30–E-31.)
• No sound from the built-in speakers	• Check whether you have set the display for use of internal speakers.
	(See “Adjusting Sound” on P. E-28–E-29.)
• No sound from external speakers	• Check cables for disconnection.
	• Check whether you have set the display for use of external speakers.
	(See “Adjusting Sound” on P. E-28–E-29.)
• No sound	• Check whether you have selected “No audio” for the “Audio input” setting.
	(See “Extended Features” on P. E-35–E-39.)
• If “Invalid operation” appears.	• Check whether you have selected “Input priority”.
	(See “Extended Features” on P. E-35–E-39.)
• If “Out of range” appears, the display is	• Input proper signals.
receiving a signal whose image or signal	Make sure that the vertical frequency of the input signal is 75 Hz or less for SVGA and
cannot be reproduced by the display.	60 Hz for XGA.
• If “Error message Condition 1” appears,	• Turn OFF the main power switch, remove the power plug from the receptacle, and
the fan is defective.	contact your dealer for repairs.
• If “Error message Condition 2” appears,	• Turn OFF the main power immediately. (You can turn the power back ON again when
the display’s internal components are	the components have cooled sufficiently.) If the message appears again when you turn
extremely hot.	the power back on, turn off the main power switch, remove the power plug from the
	receptacle, and contact your dealer for a repairs.
• If the power indicator lamp flashes red.	• Turn OFF the main power switch, remove the power plug from the receptacle, and
	inform your dealer about how the lamp flashed.
	As explained below, the power indicator lamp flashes differently depending on the type
	of problem:
	– Flashes repeatedly: Improper supply voltage level
	– Flashes once: Malfunction by the fan
	– Flashes twice: Excessive temperature
	– Flashes three times or more: Other problems

E-44