Aiwa CX-NA31 - Manual (Page 23)

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CARE AND MAINTENANCE TROUBLESHOOTING GUIDE
Occasional care and maintenance of the unit and the software
are needed to optimize the performance of your unit.
To clean the cabinet
Use a soft and dry cioth.
If the surfaces are extremely dirty, use a soft cloth lightly
moistened with mild detergent solution. Do not use strong
solvents, such as alcohol, benzine or thinner as these could
damage the finish of the unit.
To clean the heads and tape paths
After every 10 hours of use, clean the heads and tape paths
with a head cleaning cassette or cotton swab moistened with
cleaning fluid or denatured alcohol. (These cleaning kits are
commercially available.)
When cleaning with a cotton swab, wipe the recording/playback
head, erasure head (deck 2 only), capstans, and pinchrollers.
If the unit fails to perform as described in these Operating
Instructions, check the following guide.
GENERAL
There is no sound.
• Is the AC cord connected properly?
• Is there a bad connection? (-» page 3)
• There may be a short circuit in the speaker terminals.
-» Disconnect the AC cord, then correct the speaker
connections.
• Was an incorrect function button pressed?
Sound is emitted from one speaker only.
• Is the other speaker disconnected?
The output sound is not stereo.
• Is the Karaoke function turned on? (-» page 17)
An erroneous display or a malfunction occurs.
-♦ Reset the unit as stated below.
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After cleaning the heads and tape paths with a liquid head
cleaning cassette or a moistened swab, wait until the cleaned
parts are completely dry before inserting the tapes.
To demagnetize the heads
The heads may become magnetized after long-term use. This
may narrow the output range of recorded tapes and increase
noise. After 20 to 30 hours use, demagnetize the heads with
any commercially available demagnetizer.
Care of discs
• When a disc becomes dirty, wipe the disc from the center out
with a cleaning cloth. .
• After playing a disc, store the disc in its case. Do not leave the
disc in places that are hot or humid.
Care of tapes
• Store tapes in their cases after use.
• Do not leave tapes near magnets, motors, television sets, or
any source of magnetism. This will downgrade the sound quality
and cause noise.
• Do not expose tapes to direct sunlight, or leave them in a car
parked in direct sunlight.
TUNER SECTION
There is constant, wave-like static.
• Is the antenna connected properly? (-» page 4)
• Is the signal weak?
-► Connect an outdoor antenna.
The reception contains noise interferences or the sound
is distorted.
• Is the system picking up external noise or multipath distortion?
-» Change the orientation of the antenna.
-» Move the unit away from other electrical appliances.
CASSETTE DECK SECTION
The tape does not run.
• Is deck 2 in pause mode? (-> page 10)
The sound is off-balance or not adequately high.
• Is the playback head dirty? (-» page 22)
Recording is not possible.
• Is the erasure prevention tab on the tape broken off? (-► page
10 ) .
• Is the recording head dirty? (-» page 22)
Erasure is not possible.
• Is the erasure head dirty? (-> page 22)
• Is a metal tape being used?
High frequency sound is not emitted.
• Is the recording/playback head dirty? (-► page 22)
CD PLAYER SECTION
The CD player does not play.
• Is the disc correctly inserted? (-» page 11)
• Is the disc dirty? (-» page 22)
• Is the lens affected by condensation?
-► Wait approximately one hour and try again.
To reset
If an unusual condition occurs in the display window or the
cassette decks, reset the unit as follows.
1 Press the POWER button to turn off the power.
2 Press the POWER button to turn the power back on while
pressing the ■ CLEAR button. Everything stored in memory
after purchase is canceled.
If the power cannot be turned off in step 1 because of a malfunction,
reset by disconnecting the AC cord, and connect it again. Then
repeat step 2.
ENGLISH
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