Denon DN-720R User Manual

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Thank you very much for purchasing the DENON component stereo 
cassette tape deck. 
DENON proudly presents this advanced tape deck to audiophiles and , 
music lovers as a further proof of DENON's non compromising pursuit 
of the ultimate in sound quality. The high quality performance and 
easy operation are certain to provide you with many hours of 
outstanding listening pleasure. 
- TABLE OF CONTENTS - 
 FEATURES  ................................................................ 5 
 CONNECTION ............................................................ 5 
 NAMES AND FUNCTION OF PARTS  ......................... 6, 7 
 CASSETTE TAPES  ...................................................... 7 
 AUTO TAPE SELECT FEATURE .................................... 7 
 PLAYBACK ................................................................. 8 
 RECORDING .......................................................... 8, 9 
 PROPER RECORDING LEVEL ....................................... 9 
 RECORDING BIAS ADJUSTMENT  ................................ 9 
 RECORDING ADJUSTING  ........................................... 9 
 REC/REC MUTE BUTTON ...........................................10 
 MUSIC SEARCH SYSTEM  ...........................................10 
 TAPE COUNTER AND MEMORY STOP ....................10,11 
 DOLBY B & C NOISE REDUCTION SYSTEM .................11 
 DOLBY HX-PRO HEADROOM EXTENSION SYSTEM ......11 
 MAINTENANCE .........................................................12 
 TROUBLESHOOTING .................................................13 
 SPECIFICATIONS ......................................................13 
 WIRED REMOTE DIAGRAM  .......................................14 
CONNECTION 
Please check to make sure the following items are included 
with the main unit in the carton: 
 
(1) Operating Instructions …………………………………………………….1 
 (2) Connection Cords ………………………………………………………….. 2 
 (3) Remote control box connection wire …………………………………1 
 (4) Adjustment sheet ………………………………………………………….. 1 
 (5) Remote control box schematic diagram …………………………… 1 
FEATURES
•  Computer Controlled Mechanism 
•  Non-slip Reel Drive for Stabilizing Tape Tension 
•  Dual Power Supply 
•  2-Head Design Utilizes The Amorphous Head 
•  Dolby HX PRO System 
 
Dolby B & C Noise Reduction System 
•  Manual Bias Adjustment Controls (Left/Right Independent) 
 
Computing Linear or Real Time Tape Counter With 4-Digit 
   Read out and Memory Stop 
  
Auto Tape Selector. 
•  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 connections between the deck and other components have been completed. 
 Connecting the Deck to an Amplifier  
•  Before connecting the deck to your amplifier, it is a good practice to review your 
  amplifier's instruction manual.  
  Use the white plugs for the left channel and red plugs for the right channel. 
   Tape Dubbing  
 
  Many stereo amplifiers and receivers have tape dubbing circuitry so that 
 
tape duplication can be performed between two or more tape decks. Review your 
 
amplifier's instruction manual for a full explanation of this mode of operation. 
•  Systems Remote Control 
  A wired remote control box can be connected to this unit. No remote control box is 
included. For remote control, the user should build a remote control box referring to the 
included schematic diagram (remote control box schematic diagram). Connect the 
remote control terminal to the remote control jack on the rear panel.  
• Connecting Headphones  
 
To listen through headphones, plug your headphones into the PHONES jack. 
 
Installation Precautions 
If the deck is placed near an amplifier or tuner, noise (induced hum) or beat 
interference may result (especially during AM or FM reception). If this occurs, separate 
the deck from other components or reorient its position. 
NOTE: 
 
Use this unit in a horizontal orientation. 
When the unit is used with the front panel facing upward (and the unit is in a vertical 
orientation) or when the front panel is on an incline, the unit will not operate properly. 
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