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MAINTENANCE 

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Removing the cassette compartment cover 

It will be more convenient if the cassette compartment cover is 
removed during the cleaning of the pinchroller and heads, or during 
demagnetizing of heads. 
Follow these procedures: 
1.  Press the EJECT button to open the cassette compartment. 
2.  Hold only the cover of the cassette compartment and pull it up. The  compartment 
 

cover is removed from the front. 

When attaching the cassette compartment cover, reverse the above procedure. 

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Head Cleaning

 

After long usage, tape coating or dust may adhere to the heads, causing deterioration 
of sound. Clean them regularly. Use a cotton swab moistened with cleaning solution 
(such as alcohol). 

Note: 

1.  Some cleaning cassettes on the market have a strong abrasive effect   and scratch the 
   

heads. Use cotton swab instead of cleaning cassettes. 

2.  Since the use of metal tapes is apt to collect more dust on the heads,   clean the heads 
 

more often to enjoy optimum sound. 

12 

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Cleaning the Pinchroller and the Capstan

 

If the pinchroller or the capstan accumulate dust, tape transport may become 
unstable resulting from slippage during recording or playback. The tape can also be 
damaged by being rolled up around the capstan. Clean them with a cotton swab or 
soft cloth moistened with cleaning solution (such as alcohol). 

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Demagnetizing the Heads

 

The heads may become magnetized after long usage or by having a strongly 
magnetized object brought neat them. The result is a generation of noise, loss of the 
high frequency range, or erasing the treble components of pre-recorded tapes and 
adding noise. 

  Demagnetize the heads on a regular basis. 

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Procedure

 

1.  Be sure to turn "off" the power supply. 
2.  Turn the demagnetizer "on" while it is more than 30cm away from the heads. Bring 

the demagnetizer near the heads and slowly move it in a small circle four or five 
times. 

3.  Slowly move the demagnetizer away from the heads and turn "off" the power of the 
  demagnetizer when it is about 30cm away from the heads. 

Summary of Contents for DN-720R

Page 1: ...STEREO CASSETTE TAPE DECK DN 720R OPERATING INSTRUCTIONS...

Page 2: ...ct your DENON DEALER 3 Do not place anything inside Do not place metal objects or spill liquid inside the cassette tape deck Electric shock or malfunction may result Please record and retain the Model...

Page 3: ...ot likely to be walked on or pinched by items placed upon or against them paying particular attention to cords at plugs convenience receptacles and the point where they exit from the appliance 14 Clea...

Page 4: ...g the cord Keep the set free from moisture water and dust Unplug the power cord when not using the set for long periods of time For sets with ventilation holes Do not obstruct the ventilation holes Do...

Page 5: ...elector 19 inch Rack Mountable Speed Control of Approximately 12 Accurate Music Search System Display Memory Back up Leave your entire system including this cassette deck turned off until all connecti...

Page 6: ...speed regardless of the position of the tape speed control knob When set at the VARIABLE position the tape speed changes according to the position of the tape speed control knob TAPE SPEED control Us...

Page 7: ...Slack This cassette deck incorporates an automatic tape slackness preventive mechanism but it can not prevent such a slackness as shown below Remove it with a pencil or the like prior to use AUTO TAP...

Page 8: ...nd playback playback response will be adversely effected Switch on the source component tuner amplifier etc Set the TAPE MONITOR switch on your amplifier or receiver to the SOURCE position 8 PHONES Pl...

Page 9: ...better results Note Optimum recording levels can differ depending on program sources or the type of tape used RECORDING ADJUSTING If the high frequencies treble sounds are to be boosted turn the bias...

Page 10: ...the CUE state on automatically become the PLAY mode and begin performing the next melody 2 For hearing again the melody being reproduced At PLAY mode depress the PLAY button and the REW button simulta...

Page 11: ...high frequency signal during recording and reduces the level of these signals by an identical amount during playback As a result the playback signal is identical to the original source signal but the...

Page 12: ...on the heads clean the heads more often to enjoy optimum sound 12 Cleaning the Pinchroller and the Capstan If the pinchroller or the capstan accumulate dust tape transport may become unstable resultin...

Page 13: ...type detection a different tape indicator comes on without tape type detection holes holes The cassette tape cannot be removed If the power switch is turned off in either the Turn the power switch ON...

Page 14: ......

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