TROUBLESHOOTING

Symptoms That Appear to be Failures

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

CAUTION

Customer servicing can be hazardous.

Symptom

 

Point to check

See page

 

 

 

 

• No picture with the power-indicating lamp

 

• Check the way the power cable is connected.

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off.

 

• Press the power switch.

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

 

No sync signal is detected.

 

Save” is displayed.

! No Sync. Signal

• Check the way the signal cable is connected.

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• Make sure that the switch of the computer, imaging equipment ,

 

 

 

• No picture, with the power indicating lamp lit

 

etc., is turned on.

 

 

 

orange.

 

• 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

 

 

 

 

 

 

 

An input signal is not received normally.

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displayed.

 

 

! Invalid Scan Freq.

• Check to see if the input signal matches the monitor

 

 

 

 

 

 

 

 

 

 

 

specifications.

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• Check the way the signal cable is connected.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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• The power indicating lamp is lit normally but

 

 

 

 

 

 

 

• Check the contrast and brightness settings (adjust them for

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no picture displays.

 

 

 

 

 

 

 

higher contrast and brightness).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Check the way the signal cable is connected.

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• The display image appears flowing

 

 

 

 

 

 

 

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

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slantwise.

 

 

 

 

 

 

 

frequency first, the dot clock phase next.)

 

 

 

 

 

 

 

 

• Text displayed across the screen appears

 

 

 

 

 

 

 

(RGB input)

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vertically streaked, with the characters in

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

vertical columns blurred.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Text displayed across the screen appears

 

 

 

 

 

• Adjust the dot clock phase for the clearest viewing.

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blurred.

 

 

 

 

 

(RGB input)

 

 

 

 

 

 

• A fine pattern flickers when displayed on the

 

 

 

 

 

 

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screen.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• The remote control does not work.

 

 

 

 

 

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

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opposite direction.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

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• Check if the setting of remote control ID no. is correct.

 

 

 

 

 

 

 

 

 

ENGLISH

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Yamaha pdm-4210 Troubleshooting, Symptoms That Appear to be Failures, Check to see if the input signal matches the monitor