Panasonic SC-HT640W User Manual

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Before requesting service, make the following checks. If you are in doubt about some of the check points, or if the solutions indicated in the chart do not 
solve the problem, refer to “Customer Services Directory” on page 33 if you reside in the U.S.A., or refer to “Product information” on page 11 if you 
reside in Canada.

≥ Insert the AC power supply cords securely.

≥ The Sleep timer was working and had reached the set time limit.

≥ This unit cannot play discs other than the ones listed in these operating instructions.
≥ The unit may not be operating properly due to lightning, static electricity or some other external 

factor. Turn the unit off and then back on. Alternatively, turn the unit off, disconnect the AC power 
supply cord, and then reconnect it.

≥ Condensation has formed. Wait 1 to 2 hours for it to evaporate.

≥ Check that the batteries are installed correctly.
≥ The batteries are depleted. Replace them with new ones.
≥ Aim the remote control at the display and operate.

≥ CD Mode is on. Press and hold [—CD MODE] to turn CD Mode off.

≥ Check the video or speaker connection.
≥ Check the power or input setting of the connected equipment.
≥ Check that the disc has something recorded on it.

You have forgotten your ratings 
password.
Reset all the settings to Factory Preset.

≥ While stopped and “DVD/CD” is the source, press and hold [∫] (Stop) on the main unit and [S10] on 

the remote control until “Initialized” disappears from the television. Turn the unit off and on again.
All settings will return to the default values.

It takes time before play starts. 
[MP3]

≥ Play may take time to begin when an MP3 track has still picture data. Even after the track starts, the 

correct play time will not be displayed. This is normal.

Folders on a data CD are not 
displayed correctly. 
[WMA] [MP3] [JPEG]

≥ Folders deeper than the eighth layer are displayed as the eighth layer.

[VCD]

≥ This is normal for Video CDs.

[VCD] with playback control

≥ Press [∫ STOP] twice and then press [1 PLAY].

[DVD-V]

≥ These functions do not work with some DVD-Videos.

[DVD-A]

≥ Even if a second soundtrack is not recorded, two numbers are normally shown.

[DVD-A]

≥ This is normal for DVD-Audio.

Scenes are skipped intermittently. 
[DVD-VR] [DVD-V]

≥ If you change the volume or sound effects during Advanced Disc Review, the function continues 

without the on-screen display. Cancel the function.

≥ Adjust the position. (“Subtitle Position” in Display Menu)

≥ Display the subtitles. (“Subtitle” in Main menu)

≥ Clear the subtitles.

≥ You cannot add markers with DVD-RAM.
≥ If the disc’s elapsed play time does not appear on the unit’s display, you cannot add markers.

≥ The end of an item becomes point B when it is reached.

≥ Noise may occur when playing WMA.

≥ Some audio effects do not work or have less effect with some discs.

≥ An AC power supply cord or fluorescent light is near the main unit. Keep other appliances and 

cables away from the main unit and the wireless speaker.

≥ There may be a slight pause in sound when you change the play speed.
≥ Ensure that the wireless selector on the surround speaker is set to “ON”, and “[W]” is displayed on 

the main unit’s display.

≥ When the wireless selector is set to “ON” and the selected source on the main unit is not 

“REAR MUSIC P.”, audio from an external device connected to the rear MUSIC PORT is mixed with 
audio from the main unit (e.g. listening to music from an MP3 player while playing a DVD).
Set the wireless selector to “OFF”, or select “REAR MUSIC P.” as the source. Alternatively, 
disconnect the external device.

≥ Select “DVD/CD” as the source.
≥ Cancel Program and Random play.

HT640W.book  Page 30  Friday, January 6, 2006  12:17 PM