Hitachi 42pd7500a Manual Do Utilizador

Make the checks suggested below depending on the symptoms observed.  If the symptoms remain uncorrected, contact your dealer.

Customer servicing can be hazardous.

WARNING

• No picture with the power-indicating lamp

off.

• Check the way the power cable is connected.
• Press the power switch.

• The power indicating lamp is normally lit but

no picture.

• Check the contrast and brightness settings (adjust them for higher

contrast and brightness).

• Check the way the signal cable is connected.

• The message “Invalid Scan Freq.” is

displayed.

An input signal is not received normally.
• Check to see if the input signal matches the monitor

specifications.

• Check the way the signal cable is connected.

! Invalid Scan Freq.

• The message “No Sync. Signal” or “Power

Save” is displayed.

• No picture with the power indicating lamp

lights in orange.

No sync signal is detected.
• Check the way the signal cable is connected.
• Make sure that the switch of the computer, imaging equipment,

etc., is turned on.

• Make sure the computer is not in the power-save mode.
• Check to see if the input selection matches the connection 

terminal.

! No Sync. Signal

• The display image appears flowing slant-

wise.

• Text displayed across the screen appears

vertically streaked, with the characters in
vertical columns blurred.

• Adjust the dot clock frequency and phase.  (Adjust the dot

clock frequency first, the dot clock phase next.)

(RGB input)

• Text displayed across the screen appears

blurred.

• A fine pattern flickers when displayed on

the screen.

• Adjust the dot clock phase for the clearest viewing.

(RGB input)

• The remote control does not work.

• Check to see if the batteries are loaded in the remote control in

opposite direction.

• Check to see if the batteries in the remote control are OK.

• The display image does not appear in the

normal position.

• Check to see if the displayed input signal match the monitor

specification by pressing

button.

• Turn off the screen saver.

• The display has lack of picture around the

screen.
(PC input mode only)

• Turn off the screen saver.

• The temperature of the display panel surface is high.

• The plasma display panel is lighting the phosphors by the

discharge of internal radiation. In some cases, this may cause the
temperature of the panel surface to increase. Please note that this
is not a malfunction.

–

• The message “Check Antenna” is displayed.

• Check the connection status.

! Check Anntena