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Symptoms that seemingly appear to be failures, Troubleshooting, English – Hitachi CMP420V2 User Manual

Page 29: Warning

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ENGLISH

Symptoms That Seemingly Appear to be Failures

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

TROUBLESHOOTING

Customer servicing can be hazardous.

WARNING

Symptom

Point to check

See page

• No picture with the power-indicating lamp

off.

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

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

Save” is displayed.

• No picture with the power indicating lamp

lights in orange.

! No Sync. Signal

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.

• The message “Invalid Scan Freq.” is

displayed.

! Invalid Scan Freq.

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.

• 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 display image appears flowing

slantwise.

• 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.