Aiwa CX-ZR774 Operating Instructions Manual page 26

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 dry cloth.
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~
Erasure head
Cotton swab
\
Recording/
playback head
/
Capstan
Pinchroller
——————l~f——————
,
LnI=L-1
I&l!
'The illustration above shows the heads and tape paths on Deck
2.
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-hour 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 cleanina cloth.
After playing a disc, store th"e 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.
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 4,5)
There may be a shorl 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 20)
An erroneous display or a malfunction occurs.
+
Reset the unit as stated below.
TUNER SECTION
There is constant, wave-like static.
Is the antenna connected properly? (+ page 4,5)
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 15)
The sound is off-balance or not adequately high.
Is the playback head dirty? (+ page 26)
Recording is not possible.
Is
the erasure prevention tab on the tape broken off?
(+ page15)
Is the recording head dirty? (+ page 26)
Erasure is not possible.
Is the erasure head dirty? (+ page 26)
Is a metal tape being used?
High frequency sound is not emitted.
Is the playback head dirty? (+ page 26)
CD PLAYER SECTION
The CD player does not play.
Is the disc correctly placed? (+ page 12)
Is the disc dirty? (+ page 26)
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 POWER to turn off the power.
2 Press POWER to turn the power back on while pressing
CLEAR.
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 carry out step 2.
26
ENGL/SH