General; Care And Maintenance; Troubleshooting Guide - Aiwa CX-NHMT75 Operating Instructions Manual

GENERAL

CARE AND MAINTENANCE

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 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 tape heads
When the tape heads are dirty;
- high frequency sound is not emitted
- the sound is not adequately high
- the sound is off-balance
- the tape cannot be erased
- the tape cannot be recorded on
After every 10 hours of use, clean the tape heads with a head
cleaning cassette.
Refer to the instructions of the cleaning cassette for details.
To demagnetize the tape heads
The tape heads may become magnetized after long-term use.
This may narrow the output range of recorded tapes and increase
noise.
After every 20 to 30 hours of use, demagnetize the tape heads
with a separately sold demagnetizing cassette.
Refer to the instructions of the demagnetizing cassette for details.
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.
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ENGLISH

TROUBLESHOOTING GUIDE

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)
• 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 23)
An erroneous display or a malfunction occurs.
© Reset the unit as stated below.
The unit blacks out when the power is turned off.
• Is the power economizing mode set to "ECO ON" or "ECO
AUTO"? (© page 7)
The power is not turned on.
© Disconnect the AC cord, and connect it again in a few
seconds.
TUNER SECTION
There is constant, wave-like static.
• Is the antenna connected properly? (© page 6)
• 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 13)
The sound is off-balance or not adequately high.
• Is the playback head dirty? (© above)
Recording is not possible.
• Is the erasure prevention tab on the tape broken off? (© page 14)
• Is the recording head dirty? (© above)
Erasure is not possible.
• Is the erasure head dirty? (© above)
• Is a metal tape being used?
High frequency sound is not emitted.
• Is the recording/playback head dirty? (© above)
CD PLAYER SECTION
The CD player does not play.
• Is the disc correctly placed? (© page 15)
• Is the disc dirty? (© above)
• 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 s
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.