Panasonic SC-PM21 Operating Guide
14
RQT7968
Troubleshooting guide
Before requesting service, make the following checks. If you are in doubt about some of the check points, or if the remedies
indicated in the chart do not solve the problem, refer to the “Product information” on page 3.
Common problems
No sound.
Turn the volume up.
The speaker cords may be shorted. Turn the unit off, check and correct the connections and
turn the unit on (refer page 4).
Sound is unfixed, reversed or comes
from one speaker only.
Check the speaker connections (refer page 4).
Humming heard during play.
An AC power supply cord or fluorescent light is near the cables. Keep other appliances and
cords away from this unit’s cables.
“ERROR” is displayed.
Incorrect operation performed. Read the instructions and try again.
“– –:– –” appears on the display.
You plugged the AC power supply cord in for the first time or there was a power failure recently.
Set the time (refer page 12).
“F76” is displayed.
Check and correct the speaker cord connections (refer page 4).
If this does not fix the problem, there is a power supply problem. Consult the dealer.
Listening to the radio
Noise is heard.
The stereo indicator flickers or doesn’t
light.
Sound is distorted.
Use an outdoor antenna (refer page 4).
A beat sound is heard.
Turn the TV off or separate it from the unit.
A low hum is heard during AM
broadcast.
Separate the antenna from other cables and cords.
When there is a television set nearby
The picture on the TV
disappears or stripes appear
on the screen.
The location and orientation of the antenna are incorrect. If you are using an indoor antenna,
change to an outdoor antenna (refer page 4).
The TV antenna wire is too close to the unit. Separate the antenna wire of the TV set from the
unit.
change to an outdoor antenna (refer page 4).
The TV antenna wire is too close to the unit. Separate the antenna wire of the TV set from the
unit.
Using the cassette deck
Recording is not possible.
If the erasure prevention tabs have been removed, cover the holes with adhesive tape (refer
page 10).
Playing discs
The display is wrong or play
won’t start.
The disc may be upside down (refer page 7).
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 remote control
Remote control doesn’t work.
Check that the batteries are inserted correctly (refer page 5).
Replace the batteries if they are worn.
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