Denon DN-720R Cassette Player User Manual
Contents
1. The cassette tape cannot be removed If the power switch is turned off in either the recording or playback mode and the unit is stopped there may be case when the cassette cannot be removed even if the EJECT button is pressed Turn the power switch ON again and then press the stop button Then in the stop mode press the EJECT button to remove the cassette tape SPECIFICATIONS Type Heads Motors Tape Speed Variable PLAY Fast Forward Rewind Time Recording Bias Overall S N Ratio at 3 THD level Overall Frequency Response Channel Separation Crosstalk Wow amp Flutter Inputs Line Vertical tape loading 4 track 2 channel stereo cassette deck Recording playback head Amorphous x 1 Erase head Double gap ferrite x 1 Capstan DC servo motor x 1 Reel DC motor x 1 4 8 cm sec FIX Approx 72 Approx 110 sec with a C 60 cassette Approx 105 kHz Dolby C NR on more than 74 dB CCIR ARM1 25 19 000 Hz 3 dB at 20 dB Metal tape More than 40 d8 at 1 kHz More than 65 dB at 1 kHz 0 055 WRMS JIS method 0 14 w peak 80 mV 20 dBm input level at maximum Input impedance 50 kohm unbalanced Outputs Line with 47 kohm load recorded level of 200 pwb mm Headphone optimum load impedance 8 ohm v 1 2 kohm Power supply Power Consumption Dimensions Weight Installation 775 mV 0 dB output level at maximum 1 2 mW output level at maximum Voltage is2. Dolby B amp 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 e Auto Tape Selector e 19 inch Rack Mountable e Speed Control of Approximately 12 e e Accurate Music Search System Display Memory Back up e 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 e Before connecting the deck to your amplifier it is a good practice to review your amplifier s instruction manual e Use the white plugs for the left channel and red plugs for the right channel Receiver or amplifier e 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 e Connecting Headphones To listen through headphones plug your headphones into the PHONES jack 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 Cassette deck
3. NAMES AND FUNCTION OF PARTS wescssssssssseeseeseees 6 7 CASSETTE TAPES csccsssssssessesesssssssecsessrsntsatsessteanenees 7 AUTO TAPE SELECT FEATURE 7 PLAYBACK ta Nese ree tI A a ERU NE 8 RECORDING dscsfacsisssssancsiissostsnsneassandbedsaaechetsheecds 8 9 PROPER RECORDING LEVEL sessessessessesstseesesstesteatenss 9 RECORDING BIAS ADJUSTMENT 9 RECORDING ADJUSTING 9 REC REC MUTE BUTTON 10 MUSIC SEARCH SYSTEM ssssssesrsereserereresneseernserensreses 10 TAPE COUNTER AND MEMORY STOP cccsseeseees 10 11 DOLBY B amp C NOISE REDUCTION SYSTEM ccseeee 11 DOLBY HX PRO HEADROOM EXTENSION SYSTEM 11 MAINTENANCE cceecetteeeecteeeeceeseceeeeeceeeeseceeeeencees 12 TROUBLESHOOTING wel SPECIFICATIONS ssseesees n 13 WIRED REMOTE DIAGRAM nsssssssssssrrssrrrnerennnnrnnnnennne 14 CONNECTION Please check to make sure the following items are included with the main unit in the carton 1 Operating Instructions 2 0 0 cecceeeeeeeeeteeeeeeeeeeeeeesteeeeeeeeeeeeee 1 2 Connection Cords s wed 3 Remote control box connection Wire ceeceeeeeeeteeeeeees 1 4 Adjustment Sheet ccccccesecsessesesesseeceeceeseeeesseesseeeneeeeeaeeneas 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
4. YF This jack is for the remote control function only Do not plug in microphones headphones nor other plugs Power supply outlet 50 60 Hz e 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 NAMES AND FUNCTIONS OF PARTS DDO 0009 OO OQ Power Switch POWER Controls the supply of AC power to the deck One push turns the deck on a second push turns it off The deck remains in a stand by non operative mode for approximately 2 seconds after it is switched on PHONES jack For private music enjoyment without disturbing others or for monitoring a recording a set of headphones may be plugged in Impedance should be from 8 to 1200 ohms COUNTER RESET button for the real time counter and the linear counter too Operation of the button resets the counter to all zero MEMORY STOP button During rewinding operations the tape will stop at the 0000 counter point automatically when this button is pressed in TAPE SIZE button You can know accurate elapsed time of the tape by adjusting the
5. shown on rating label 16 W 4831W x 1341H x 2751D mm 4 7 kg 19 inch rack mountable 3U e Above specifications and design styling are subject to change for improvement Dolby noise reduction and HX Pro headroom extension manufactured under license from Dolby Laboratories Licensing Corporation HX Pro originated by Bang amp Aloofness DOLBY the double D symbol mand HX PRO are trademarks of Dolby Laboratories Licensing Corporation 13 WARNING INSTRUCTIONS ON THIS SHEET ARE FOR QUALIFIED SOUND INSTALLERS AND SERVICE PERSONNELS ONLY Wired Remote Control Box Circuit Diagram 1 Circuit Diagram R001 R002 R003 R004 Roos ROO6 200 ohm 30 ohm 43 ohm 62 ohm 110 ohm 160 ohm First Unit swo01 Swo002 Swo03 SW004 SW005 Swo006 L CH Ei a as TES lls I pa OO O O O Q O O Oo Q STOP PAUSE REC FF REW PLAY REC MUTE ICJ F Eye GND GND L CH Vcc 5 VOLT R CH R CH SIGNAL SW001 006 Momentary Contact SW101 102 Toggle Switch I k SW102 Second and Subsequent Units e Make a control box using the supplied remote control box connection wire e Do not connect the left channel of the plug Vcc with R001 200 ohm in the secona ana subsequent units e Use resistors having a tolerance of within 5 1 4W Use of resistors having a poorer tolerance will cause incorrect operation e Never short circuit the eft channel line Vcc Doing so will damage the main unit 2 Operation with Parallel Connectio
6. the time in which the pause stop and record pause modes are set The counter is reset to 0000 when the EJECT button is pressed 4 5 DOLBY B amp C NOISE REDUCTION SYSTEM e The Dolby noise reduction system substantially reduces the tape background noise hiss inherent in the cassette medium Dolby B NR is most widely in use However Dolby C NR is a much more recent development and represents significantly improvements over Dolby B NR Tape background noise consists primarily of high frequency information which is particularly annoying during soft passages The Dolby NR system increases the level of low volume mid and 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 level of background noise generated by the tape is greatly reduced DOLBY HX PRO HEADROOM EXTENSION SYSTEM This deck is equipped with the Dolby HX PRO headroom extension system Since the system functions automatically during recording no switching operation or adjustment is required The system is effective with any type of Normal Cr02 and Metal tape The Dolby HX PRO headroom extension system functions during recording to lift up the saturation level in the treble range Therefore most of the treble range components distorted or lost during recording on conventional cassette decks are more faithfully recorded
7. DENON STEREO CASSETTE TAPE DECK DN 720R OPERATING INSTRUCTIONS IMPORTANT TO SAFETY WARNING TO PREVENT FIRE OR SHOCK HAZARD DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE CAUTION 1 Handle the power supply cord carefully Do not damage or deform the power supply cord If it is damaged or deformed it may cause electric shock or malfunction when used When removing it from wall outlet be sure to remove by holding the plug attachment and not by pulling the cord 2 Do not open the top cover In order to prevent electric shock do not open the top cover If problems occur contact 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 name and serial number of your set shown on the rating label Model No DN 720R Serial No CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER OR BACK NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user of the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude t
8. TAPE SIZE button to the tape size used When the TAPE SIZE button is pressed the current tape size is displayed for 1 sec in the 4 figures counter If you further press the button during the display the tape size will change in the following cycle C 90 Ce74 C 60 C 100 DOLBY NR button There are independent buttons for the Dolby NR OFF B and C positions When recording tapes set the Dolby NR function as desired When playing tapes set the Dolby NR function to the same position as when the tape was recorded MPX FILTER button The MPX FILTER button should be used to prevent interference with the Dolby NR circuit when making Dolby NR encoded recordings of FM stereo programs When making Dolby NR encoded recordings from any program source other than FM stereo leave this button in the OFF position BIAS control left channel right channel independent type for NORMAL Cr02 and METAL tape Adjust the bias according to the tape characteristics Standard biasing is obtained at the center click stop position TAPE SPEED button This button is for setting the tape speed to the fixed speed FIX or variable speed VARIABLE position When set at the FIX position the tape is played at the standard fixed 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 Use this knob to vary the tap
9. and will stay in the standby state To extend the non recording state the REC MUTE state for further 5 seconds or more Press the REC REC MUTE button and the non recorded part will automatically be extended for another 5 seconds NOTE Note about MUSIC SEARCH action MUSIC SEARCH is a function which operates by detecting a comparatively long non recorded part on the tape Therefore MUSIC SEARCH may not operate normally in the following cases Sound on the tape is interrupted by speech or conversation Long periods of pianissimo Softly played music or non recorded intervals occur on the tape The tape has picked up noise in a non recorded interval Non recorded intervals on the tape are less than 4 seconds in length Noise emitting electrical appliances are in operation nearby i e Electric razors drills refrigerators etc o 3 4 5 48 410 UR SA ee eee O rec u Jf gt 68 8a MEMORY MPX FILTER ore CEC Ch taney MUSIC_SEARCH Ii pause Jerecirec mref BR Peay GJ stop Sra 1 Operation of the Real Time Tape Counter and the Linear Tape Counter e Real Time Tape Counter The time of the tape traveling at a constant speed is indicated in M minutes and S seconds A microcomputer measures and displays the time with high precision Display example 32m10s 32 minutes 10 seconds e Linear Tape Counter The tape travel time is indicated with a 4 digit value The first two digit
10. bias for different types and brands of recording tapes At the center click stop position the deck is set for a reference bias level for NORMAL Cr02 and METAL tapes If the resulting recording in this position has too much or too little high frequency content varying the bias adjustment control can be useful to achieve better results id L BIAS FINE R RECORDING ADJUSTING The recording and bias levels can be fine adjusted for the tape being used For details refer to the enclosed adjustment sheet Note Optimum recording levels can differ depending on program sources or the type of tape used If the high frequencies treble sounds are to be boosted turn the bias control counterclockwise to decreases bias current If distortion is of more concern than high frequency response turn the control clockwise to increase bias current By the use of this control you can record tapes with response that matches your personal listening tastes Counterclockwise Clockwise OUTPUT LEVEL dB FREQUENCY Hz 10 REC REC MUTE BUTTON REC REC MUTE is the DENON s unique and convenient function By using this button it is easily possible to insert a suitable space the non recorded part between two melodies 1 When you want to make about 5 seconds of non recorded part after the recording state Press the REC REC MUTE button The recorder will automatically create about 5 seconds of non recorded part and will sta
11. e fixed speed mode When recording is finished press the STOP button Be careful not to erase important recordings by mistake Mis erasing can be avoided by following the two steps below 1 If the PLAY button is pressed while the REC indicator is on the tape will be recorded 2 If the PLAY and RECORD button are pressed at the same time the tape will be recorded 3 Performing the record pause or the stop operation during recording will create a discontinuous portion in the recording signal The previously recorded signal may remain after erasure at this connecting portion Also a very small amount of the end portion of the previous song may be erased PROPER RECORDING LEVEL A too high recording level can saturate the tape and cause distortion On the other hand if the recording levels are set too low soft passages will be marked by residual noise Proper recording level is the single most important factor for making well balanced recordings Guideline for maximum recording level Normal tape 1 dB levels on peaks TYPE 1 Cr02 tape 3 dB levels on peaks TYPE II Metal tape 5 dB levels on peaks TYPE IV RECORDING BIAS ADJUSTMENT For best recording results monitoring during the recording process and comparing various recordings using your own judgment are essential The cassette deck is equipped with independent bias adjustment controls for the left and right channels to assist you in setting the proper
12. e speed First set the tape speed button to the VARIABLE position The speed can be varied within a range of approximately 12 according to the position of the tape speed control knob EJECT button Press this button to eject the cassette When the deck is operating tape is running press the stop button first to stop the tape transport then press the EJECT button Cassette compartment cover If this compartment cover is not closed completely the deck s transport controls will remain inoperative PLAY PAUSE and REC indicator When the PLAY PAUSE and REC buttons are pressed this indicator will light Fluorescent peak meters These meters indicate recording or playback peak levels for each channel For peak levels exceeding 7 dB the Auto Peak Hold Feature holds the peak level reading for approximately 1 seconds Tape counter Tape passage is indicated digitally in minutes and seconds When M and S are lit the counter is set to the real time display mode When M and S are off the counter is set to the linear display mode For an explanation of the real time and linear time display modes refer to the section TAPE COUNTER AND MEMORY STOP MEMORY indicator This indicator light is interlocked with the memory stop button MEMORY FILTER indicator This indicator light is interlocked with the MPX FILTER button MPX FILTER NR system indicator This indicator light is interlocked with the DOLBY NR button and informs th
13. e user that DOLBY NR is in use as well as which B TYPE or C TYPE TAPE SELECT indicator This indicator light is interlocked with the Auto Tape Select feature which automatically adjusts the deck to the type of tape in use TYPE I TYPE II or TYPE IV TAPE SPEED indicator FIX or VARIABLE is interlocked with the TAPE SPEED button The tape speed can be controlled when VARIABLE is lit INPUT LEVEL control The recording input level is adjusted by this knob The levels in the left and right channels can tie changed simultaneously Tape transport controls PLAY button Press to playback tape B pray pey h STOP STOP button Press to stop tape in any mode lt lt REW button Press for fast rewind gt gt FF button Press fast forward tape winding To begin recording press the RECORD and PLAY button simultaneously If only the RECORD button is pressed the deck is placed in the REC PAUSE record standby mode e REC REC MUTE RECORD MUTE button When this button is pressed under the REC PAUSE state the mode shifts to the Auto Rec Mute when this button is pressed for making a non recorded part between two melodies about 5 sec of non recorded part can automatically be created Il PAUSE PAUSE button Press this button to enter the recording pause mode from the recording or recording mute mode Press this button to enter the playback pause mode from playback mode CASSETTE TAPES e Handling Precautions e S
14. he appliance does not appear to operate normally or exhibits a marked change in performance or E The appliance has been dropped or the enclosure damaged Servicing The user should not attempt to service the appliance beyond that described in the operating instructions All other servicing should be referred to qualified service personnel NOTE ON USE Keep the set free from moisture water and dust Avoid high temperatures Allow for sufficient heat dispersion when installed on a rack Unplug the power cord when not using the set for long periods of time Handle the power cord carefully Hold the plug when unplugging the cord For sets with ventilation holes Do not obstruct the ventilation holes Do not let foreign objects in the set Do not let insecticides benzene and thinner come in contact with the set i Never disassemble or modify the set in any way 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 v ccsccscssssscsecsecsessesstseesecsecsrsatsatsecsesstsaneaeenss 5 CONNECTION o cesccssssssecsecsesstsetsecsessesarsanssssssesaneatenees 5
15. layback response will be adversely effected ig8 B8 my sta Ezam ma 2 MOTOR MECHANISM DUAL POWER SUPPLY SYSTEM PHONES 4 SMe T L BI S FINE A TAPE SPEED POWER Push the switch to turn ON the power EJECT Press the EJECT button to open the cassette compartment cassette Compartment Cover Make sure the erasure prevention tab has not been removed from the cassette shell half DOLBY NR Set in accordance with the recording to be made For recordings without Dolby NR set to OFF For recordings with Dolby B NR set to B The B NR indicator will light up For recordings with Dolby C NR set to C The C NR indicator will light up future mistakes during playback can be avoided if the cassette is so marked for Dolby NR encoded recordings MPX FILTER Button it ON for the DOLBY NR recording of FM broadcasts The MPX FILTER indicator will light up Caution e REC REC MUTE When pressed the deck goes into the record standby mode The O REC and Il PAUSE indicators will light Initial setting of recording levels should be made in the record standby mode The tape speed control is set to the fixed mode and FIX lights on the display INPUT LEVEL Used to set the recording level P play When pressed the recording will start The PLAY and O REC indicators will light up Note In the recording mode the variable speed mode cannot be selected and the mode is automatically switched to th
16. ler 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 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 Procedure 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 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 TROUBLESHOOTING Make sure of the followings before you consider as any malfunctions 1 Are all the connections correct 2 Is the set being operated correctly in accordance with the operating instructions 3 Are the speakers and amplifiers functioning correctly If the tape deck still does not function properly check it again using the check list below I the symptom does not correspond to the check list please contact your DENON dealer Problem Cause Re
17. medy Tape does not run Power cord is off Tape is completely wound up Tape is loose Cassette is not loaded properly Defective cassette Check power cord Rewind tape Tighten tape with a pencil etc Load cassette properly Replace cassette Tape is not recorded when recording button is pressed No cassette is loaded Erase prevention tab is broken off Load cassette e Cover hole with plastic tape Sound is warbled or distorted Heads capstan or pinchroller are contaminated Tape is wound too tight Recording input level is too high e Tape is worn out and has drop outs Clean them Fast forward or rewind to loosen tape winding Adjust recording input level Replace tape Excessive noise e Tape is worn Heads capstan or pinchroller are contaminated Heads are magnetized Recording input level is too low Replace tape Clean them Demagnetize heads Adjust recording input level High frequency treble is emphasized e Dolby NR button is set improperly Set Dolby NR button properly High frequency treble is lost e Heads are contaminated e Tape is worn e Clean them Replace tape When a Cr02 or metal tape is placed in the deck a different tape indicator comes on The cassette housing is of an older design without tape type detection holes Use the latest cassette with tape type detection holes
18. ng Mounting The appliance should be mounted to a wall or ceiling only as recommended by the manufacturer Ventilation The appliance should be situated so that its location or position does not interfere with its proper ventilation For example the appliance should not be situated on a bed sofa rug or similar surface that may block the ventilation openings or placed in a built in installation such as a bookcase or cabinet that may impede the flow of air through the ventilation openings Heat The appliance should be situated away from heat sources such as radiators heat registers stoves or other appliances including amplifiers that produce heat Power Sources The appliance should be connected to a power supply only of the type described in the operating instructions or as marked on the appliance Grounding or Polarization Precautions should be taken so that the grounding or polarization means of an appliance is not defeated FIGURE A EXAMPLE OF ANTENNA GROUNDING AS PER NATIONAL ELECTRICAL CODE ANTENNA LEAD IN WIRE ANTENNA DISCHARGE UNIT NEC SECTION 810 20 ELECTRIC SERVICE 2K GROUNDING CONDUCTORS NEC SECTION 810 21 GROUND CLAMPS POWER SERVICE GROUNDING lt i ELECTRODE SYSTEM NEC ART 250 PART H NEC NATIONAL ELECTRICAL CODE 12 20 Power Cord Protection Power supply cords should be routed so that they are not likely to be walked on or pinched by item
19. ns A number of DN 720R units can be simultaneously operated in parallel with 1 button Operation with parallel connections can be used with a maximum of 5 units Connection of 6 or more units will lead to incorrect operation 3 Cable Length The longer the length of the cable the more susceptible the system will be to the effects of external noise Keep cable lengths to 2 m or less Do not locate equipment that produces electrical noise in the vicinity of the cable Doing so might lead to incorrect operation due to the noise 4 Do not disconnect or connect the remote control plug during operation of the unit The pins of the plug might cause a short circuit of the pins inside the jack which can stop the operation 5 Pressing more than one button of the wired remote control box at the same time for combined operations is not possible A music search operation will not result from pressing the PLAY and FF or PLAY and REW buttons at the same time 6 Pressing a button of the wired remote control box and a button of the main unit DN 720R for combined operations is not possible 7 Do not switch the power on or off when the cable of the wired remote control is connected Doing so will cause incorrect operation
20. o constitute a risk of electric shock to persons The exclamation point within an equilateral triangle is intended to alert the user of the presence of important operating and maintenance servicing instruction in the literature accompanying the appliance FOR U S A amp CANADA MODEL ONLY CAUTION TO PREVENT ELECTRIC SHOCK DO NOT USE THIS POLARIZED PLUG WITH AN EXTENSION CORD RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE 6A SAFETY INSTRUCTIONS Read Instructions All the safety and operating instructions should be read before the applicance is operated Retain Instructions The safety and operating instructions should be retained for future reference Heed Warning All warnings on the applicance and in the operating instructions should be adhered to Following Instructions All opeerating and use instructions should be followed Water and Moisture The appliance should not be used near water for example near a bathtub washbbowl kitchen sink laundry tub in a wet basement or near a swimming pool and the like Carts and Stands The appliance should be used only with a cart or stand that is recommended by the manufacturer An appliance and cart combination should be moved with care ae Quick stops excessive N b force and uneven surfaces may cause the applicance and cart combination to overturn N gt Wall or Ceili
21. on the new cassette deck 2 Operation of MEMORY STOP 1 During recording or playback operations MEMORY STOP can be used to locate a particular point on the tape At the desired point reset the counter to WMOOs With the MEMORY STOP button in the ON position the deck will stop at the 0000 point actually 0002 and 0000 during REWIND operations 2 The MEMORY indication will light when this function is activated 3 Notes e When the power is turned OFF this function is automatically deactivated e The MEMORY STOP is accurate to 5 on the counter and will stop between 0002 and 0000 e The MEMORY STOP is released by pressing the EJECT button 3 Display Back up 1 The DOLBY NR MPX FILTER COUNTER VALUE TAPE SPEED and TAPE SIZE functions are protected for approximately one month by a memory back up Once the back up period is up the DOLBY NR and MPX FILTER settings are set to off the TAPE SIZE setting is reset to C 90 the Tape Speed setting is set to FIX and the counter is reset to 0000 e The operating principle of Dolby C NR is similar to that of Dolby B NR except for the encoding decoding response curves The noise reduction effect obtained with Dolby C NR is up to 20 dB compared to 10 dB with Dolby B NR In addition Dolby C NR uses an anti saturation network and spectral skewing circuitry for a significant improvement in the dynamic range of the mid to high frequencies Features of the Dolby HX PRO Headr
22. oom Extension System 1 Performance of Normal and Cr02 tapes can be upgraded closer to that of Metal tapes 2 The dynamic range in the treble is improved significantly 3 Since no decoding in playback is necessary the improvement can be obviously heard on any hi fi playback system including portable components and car systems 4 The system functions whether the Dolby B C NR is engaged or not 11 MAINTENANCE e Removing the cassette compartment cover 12 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 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 Since the use of metal tapes is apt to collect more dust on the heads more often to enjoy optimum sound clean the heads Cleaning the Pinchroller and the Capstan If the pinchrol
23. r metal tape Detection holes for chrome tape PLAYBACK Y72__T_1_2 7 T2H 7Y I e Switch on your amplifier or receiver e Set the TAPE MONITOR switch on your amplifier or receiver to the TAPE position e Operate the deck in numerical order as illustrated below OOA ECR a PRECISION AUDIO COMPONENT STEREO CASSETTE TAPE DECK eect INPUT LEVEL COMPUTEO MULTI FUNCTION DISPLAY SYSTEM am 198 88 sass 2 MOTOR MECHANISM DUAL POWER SUPPLY SYSTEM RESET MEMORY COUNTER mare PHONES Playback sound is fed into the headphones set POWER Push the switch to turn ON the power EJECT Press the EJECT button to open the cassette compartment Cassette Compartment Cover Load the cassette tape DOLBY NR For recordings made without Dolby NR set to OFF For recordings made with Dolby B NR set to B The B NR indicator will light up For recordings made with Dolby C NR set to C The C NR indicator will light up RECORDING e Switch on the source component tuner amplifier etc e Set the TAPE MONITOR switch on your amplifier or receiver to the SOURCE position OOA EENE PRECISION AUDIO COMPONENTISTEREO CASSETTE TAPE DECK A EJECT gt PLAY PLAY Push the PLAY button The PLAY indicator will light up When playback is finished press the stop button To restart the tape press the PLAY button If different types of Dolby Noise Reduction are used for record and playback p
24. s indicate the minutes the last two digits the seconds Display example 3456 34 minutes 56 seconds Press the RESET button to reset the counter to OOm OOs M and S are not displayed when VARIABLE is displayed They are also not displayed when FIX is displayed during the fast forward rewind music search operations or when the STOP button has been pressed during an operation 1 2 Select FIX using the TAPE SPEED button FIX appears on the display the counter is set to the real time mode and M minutes and S seconds appear The counter remains in the real time mode when the play record play pause record pause or stop mode is selected at this time 3 The counter automatically switches to the linear mode if the fast forward or rewind mode is set from any of the modes in 2 in 1 or if the VARIABLE mode is set during playback If the music search mode is selected the counter automatically switches to the linear mode then switches back to the real time mode once playback begins after the musicsearch operation Note The method of measuring the time and the precision differ for the real time tape counter fixed speed travel and the linear tape counter The tape may not be returned to the precise position when the fast forward rewind music search or memory rewind operations are used but this is not a malfunction Use the real time tape counter to measure the accumulated time at constant speed without counting
25. s placed upon or against them paying particular attention to cords at plugs convenience receptacles and the point where they exit from the appliance Cleaning The appliance should be cleaned only as recommended by the manufacturer Power Lines An outdoor antenna should be located away from power lines Outdoor Antenna Grounding If an outside antenna is connected to the receiver be sure the antenna system is grounded so as to provide some protection against voltage surges and built up static charges Article 810 of the National Electrical Code ANSI NFPA 70 provides information with regard to proper grounding of the mast and supporting structure grounding of the lead in wire to an antenna discharge unit size of grounding conductors location of antenna discharge unit connection to grounding electrodes and requirements for the grounding electrode See Figure A Nonuse Periods The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time Object and Liquid Entry Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings Damage Requiring Service The appliance should be serviced by qualified service personnel when A The power supply cord or the plug has been damaged or B Objects have fallen or liquid has been spilled into the appliance or The appliance has been exposed to rain or O D T
26. torage Precautions e C 120 Cassettes Do not store cassette tapes in a place where they will be subject to C 120 cassette tapes are not recommended as they use a very thin tape e Extremely high temperature or excessive moisture base which may b tangled around the capst inchroll eae ase which may become tangled around the capstan or pinchroller e Direct sunlight e Tape Slack Magnetic fields near TV sets or speakers This cassette deck incorporates an automatic tape slackness preventive To eliminate tape slack store your cassettes in cassette cases with hub stops mechanism but it can not prevent such a slackness as shown below e Accidental Erasure Prevention Remove it with a pencil or the like prior to use Every cassette has erasure prevention tabs for each side To protect your valuable recorded tapes from accidental or inadvertent erasure remove the tab for the appropriate side with a screwdriver or other tools To record on a tape with the erasure prevention tabs removed cover the tab holes with plastic tape Erasure prevention tab for side B AUTO TAPE SELECT FEATURE This Stereo Cassette Deck contains an Auto Tape Select feature which automatically selects the optimum bias and equalization for the tape in use This is accomplished by detection of e If a tape without tape type detection holes is used the deck will tape type detection holes in the cassette housing automatically adjust itself for normal tapes Detection holes fo
27. y in the recording standby state To create about 5 seconds of non recorded part after the standby state Press the REC REC MUTE button and the recorder will enter the non recording state automatically create about 5 seconds of non recorded part anti stay in the standby stare MUSIC SEARCH SYSTEM This device is a convenient system which detects the non recorded part of more than 4 seconds between melodies cues the next melody while the present melody is being reproduced or automatically detects the beginning of the melody now being reproduced and makes it into the reproduceable state 1 2 For cueing the next melody while the present melody is being reproduced At PLAY mode depress the PLAY button and the FF button simultaneously This device will detect the interval between melodies with the CUE state on automatically become he PLAY mode and begin performing the next melody For hearing again the melody being reproduced At PLAY mode depress the PLAY button and the REW button simultaneously This device will detect the interval between melodies with the REVIEW state on automatically become the PLAY mode detect the beginning of the melody now being performed and play it from the first again TAPE COUNTER AND MEMORY STOP dB 49 30 20 15 Lo se ce Ae eD D E E a E G TA ER D D a e To cancel the non recording state the REC MUTE state Press the PAUSE button and the recorder will cancel the non recording state
Download Pdf Manuals
Related Search