Troubleshooting

Troubleshooting

The following table lists possible problems and methods for remedy. Please refer to this table prior to contacting a service repre- sentative.

f the troubleshooting information provided does not result in the fault being successfully resolved, switch OFF the unit via the mains switch and remove the mains plug from the socket.

Never attempt to repair the unit yourself and under no circumstances should you remove the rear cover from the unit.

FAULTS

POSSIBLE CAUSES

POSSIBLE SOLUTION

No picture and no sound,

D

Mains switch in position ”0” (OFF).

D Set mains switch to position ”I”.

although the mains plug is

D

Display’s mains plug is not inserted in

D Insert the mains cable plug into the socket.

inserted and the unit is

 

the socket.

 

 

 

switched on.

 

 

 

 

D

Defective mains cable.

D Call the service hotline.

 

Screen is dark.

D

Contrast setting too low.

D Adjust the brightness and/or contrast

 

 

 

 

correctly (see <PICTURE> menu).

 

D No input signal, wrong input selected.

D Check the connection cable; assign correct

 

 

 

 

input to source.

Weak or excessive

D

Colour not set correctly.

D Adjust the colour using the <PICTURE> me-

colours.

D

Connection cable not correctly

 

nu.

 

 

 

inserted.

D Connect the cable correctly.

The picture is cut off or off

D

Picture position not set correctly.

D Correct the picture position.

centre.

 

 

 

Use the auto setup function.

The picture is too large or

D

Picture format set wrongly.

D

Press F

button repeatedly until the picture

too small.

 

 

 

is displayed as full screen.

The remote control is not

D

The batteries are flat.

D

Insert new batteries.

working.

D

There is an obstruction between the

D Remove the obstruction between the remote

 

 

remote control and the sensor.

 

control and the sensor.

 

D The remote control is located

D Use the remote control within the specified

 

 

outside of its operating range.

 

range.

 

The displayed picture is

D

The picture quality is not set correctly

D Correct the picture brightness and contrast

too dark.

 

 

 

under the menu option <PICTURE>.

The picture is displayed,

D

Sound mute is switched on.

D

Press the

button on the remote control.

but there is no sound.

D

Volume set to minimum.

D

Increase the volume.

 

 

D Loudspeakers not connected correctly.

D Connect the loudspeakers correctly.

Individual letters are not

 

 

D Set the phase position via the option

displayed (PC mode).

 

 

 

<INPUTS / PIP MAIN INPUT SET-

 

 

 

 

TINGS PHASE>.

 

 

 

D Check the picture width setting.

 

 

 

D Run <INPUTS / PIP MAIN INPUT SET-

 

 

 

 

TINGS AUTO SETUP>.

Horizontal stripes with TV

D

Signal source has been set up before

D Always place the signal sources at the side of

or video signals.

 

the display.

 

or behind the display.

 

D Video cable screening is inadequate.

D Use only a high-grade signal cable with a

 

 

 

 

high screening attenuation.

 

 

 

 

 

 

Temperature warning

To restore all settings to their original status, select the option

<SET UP RESET TO FACTORY DEFAULTS>!

If the display is operated without sufficient ventilation, the internal temperature can rise excessively. If the ambient or internal temperature rises above a certain value, first of all, the warning window on the left-hand side of the display will appear.

As a result, the display may automatically switch to standby mode.

Make sure sufficient ventilation is provided!

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ENGLISH

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Revox M642 HD manual Troubleshooting, Faults Possible Causes Possible Solution, SET UP ⇒ Reset to Factory Defaults