Troubleshooting Guide; Maintenance - Panasonic SC-VK31 Operating Instructions Manual

Troubleshooting guide

Before requesting service, make the checks below. If you can't fix the system as described below, or if something not listed here occurs, refer to the
enclosed directory to locate an Authorized Service Center convenient to you or contact your dealer.
Reference pages are shown as black circled numbers (.
Common Problems
Although the unit is in
standby mode, the display
lights up and changes
continuously.
No sound.
Sound stops.
Sound is unfixed, reversed
or comes from one speaker
only.
Humming heard during play.
"ERROR" is displayed.
"– –:– –" appears on the
display at standby mode.
"F61" is displayed.
Listening to the radio
Noise is heard.
The stereo indicator flickers
or doesn't light.
Sound is distorted.
A beat sound is heard.
A low hum is heard during
AM broadcasts.
When there is a television set nearby
The picture on the TV
disappears or stripes
appear on the screen.
Using the cassette deck
Poor quality sound.
Recording is not possible.
Playing discs
The display is wrong or play
won't start.
There is a loss of picture
information or the picture is
distorted.
The total number of tracks
displayed differs each time
the same disc is inserted.
Unusual sound is heard.
CD-RW cannot be read.
"TAKE OUT/DISC" appears
on the display.
Picture is smaller than screen.
Picture appears too wide.
Picture appears in
monochrome.
The picture of the video CD
does not appear on TV.
Remote control
Remote control doesn't
work.

Maintenance

If the surfaces are dirty
To clean this unit, wipe with a soft, dry cloth.
•
Never use alcohol, paint thinner or benzine to clean this unit.
•
Before using a chemically treated cloth, read the instructions that
18
came with the cloth carefully.
RQT7703
Turn off the demo function. ^
If you set the clock, demo function will be turned off automatically. ^
Turn the volume up.
Switch off the unit, determine and correct the cause, then switch the unit on. Causes include shorting of
the positive and negative speaker wires, straining of the speakers through excessive volume or power,
and using the unit in a hot environment.
Check the speaker connections. 4
An AC power supply cord or fluorescent light is near the cables. Keep other appliances and cords away
from this unit's cables.
Incorrect operation performed. Read the instructions and try again.
You plugged the AC power supply cord in for the first time or there was a power failure recently. Set the
time. ^
Check and correct the speaker cord connections. 4
If this does not fix the problem, there is a power supply problem. Consult the dealer.
Use an outdoor antenna. %
Turn the TV off or separate it from the unit.
Separate the antenna from other cables and cords.
The location and orientation of the antenna are incorrect. If you are using an indoor antenna, change to
an outdoor antenna.
The TV antenna wire is too close to the unit. Separate the antenna wire of the TV set from the unit.
Clean the heads. See below
If the erasure prevention tabs have been removed, cover the holes with adhesive tape. %
The disc may be upside down. 6
Wipe the disc.
Replace the disc if it is scratched, warped, or non-standard.
Condensation may have formed inside the unit due to a sudden change in temperature. Wait about an hour
for it to clear and try again.
The disc may be scratched, or its data may be defective. Replace the disc.
The disc was incompletely formatted. Use the recording equipment to fully format the disc before recording.
There is a problem with the disc mechanism. (A power failure may have occurred.)
The tray will open automatically. Remove the disc from the tray, and after ensuring there is no disc in the tray,
close it. The unit will make the disc changing noises for a few moments and then it should operate normally.
It is possible that the setting of the video format selector of the unit's rear panel does not agree with the TV.
Set the video format selector on the unit's rear panel to the appropriate position. 4
Note
Depending on the TV set used, the picture may shrink vertically and black bars may appear both at the top
and bottom of the screen. This is not an indication of malfunction.
The video connection cable is not connected. Connect the video connection cable. 4
The TV is not set to video input mode. Set the TV to video input mode.
Check the batteries are inserted correctly. 3
Replace the batteries if they are worn.
For a cleaner, crisper sound
Clean the heads regularly to assure good quality playback and recording.
Use a cleaning tape (not included).