Denon DRW-660 Instrucciones De Operación página 12

ENGLISH
MAINTENANCE
Ml Head Cleaning
After long usage, tape coating or dust may adhere to the heads, causing
deterioration of sound. Therefore, the parts depicted in the illustration
should be cleaned regularly. Use a cotton swab moistened with a tape
head cleaning solution (such as alcohol).
Note:
1.
TROUBLESHOOTING
Some cleaning cassettes on the market have strong abrasive effects
and may scratch the heads. Always use cotton swabs instead of
cleaning cassettes.
Since the use of metal tape is apt to coliect more dust on the heads, the
heads should be cleaned more often to enjoy the best possible sound.
Cleaning the Pinch Rollers and Capstans
If the pinch rollers or capstans accumulate dust, tape transport may
become unstable, as a result from slippage, during recording or
playback. The tape can also be damaged if it gets entangled in the
capstan.
Clean these parts with a cotton swab or a soft cloth moistened with a
tape head cleaning solution (such as alcohol).
Demagnetizing the Heads
The heads will become magnetized after long usage or if strongly
magnetized objects are brought near them. The result is a generation of
noise, loss of the high frequency range, and in extreme cases erasure of
treble components on pre-recorded tapes in combination with added
noise.
Thus, the heads should be demagnetized at regular intervals. (Head
demagnetizers are separately available from your dealer.)
How to Demagnetize the Tape Heads
1. Turn off the power.
2. Turn on the demagnetizer while it is at least 30 cm away from the
heads. Bring the demagnetizer near the heads and slowly move it in
small circles four or five times in front of each head, making sure
you do not touch them.
3. Slowly move the demagnetizer away and turn it off when it is at
least 30 cm away from the heads.
Check the following before you draw the conclusion that your Stereo Cassette Deck is malfunctioning.
1.
2.
3.
Are all the connections correct?
Are all system components being operated correctly in accordance with the operating instructions?
Are the speakers and amplifier/receiver functioning correctly?
If the tape deck still does not function properly, check the symptom against the list below. If the symptom does not correspond to the check list, please contact
your DENON dealer.
12
Tape does not run
e
e Tape is loose.
e
e
Sound is warbled and distorted. °
Excessive noise Tape is worn.
High frequency range (treble) is lost.
The cassette tape cannot be removed.
Power cord is disconnected.
Cassette is not loaded properly.
Defective cassette.
Tape is not recorded when REC/REC MUTE (@) | ¢ No cassette is loaded.
button is pressed. e Erase prevention tabs are broken off.
Heads, capstan or pinch roller are dirty.
e Tape is wound too tight.
e Recording input level is too high.
e Tape is worn out and has "drop-outs".
e
e Heads, capstan or pinch roller are dirty.
e@ Heads are magnetized.
e Recording input level is too low.
High frequency range (treble) is emphasized. {| « Doiby NR switch is set improperly.
e Heads are dirty. e Clean them.
e Tape is worn. © Replace tape.
e lf the POWER switch is turned off either | e
during recording or playback and the unit is
e stopped, there may be cases when the
cassette cannot be removed, even if the
EJECT ( 4 ) button is pressed.
e Check power cord.
e Tighten tape with a pencil, etc.
e toad cassette properly.
e Replace cassette.
e Load cassette.
e Cover holes with adhesive tape.
e Clean them.
e Fast forward or rewind to loosen tape
winding.
e Adjust recording input level.
e Replace tape.
Replace them.
Clean them.
Demagnetize heads.
Adjust recording input level.
e Set Dolby NR Switch properly.
Turn the POWER switch ON (-=) again, and
then press the STOP (MM) bution.
e Now, press the EJECT ( & | button to
remove the cassette tape.
.