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YAMAHA KX-250 Manual

1. See pe sane pike Model KX 250 Serial No The serial number is located on the rear of the unit Retain this Owner s Manual in a safe place for future reference Thank you for purchasing the YAMAHA KX 250 stereo cassetie deck SAFETY INSTRUCTIONS me CAUTION AN DO NOT OPEN 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 Explanation of Graphical Symbols The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert you to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exclamation point within an equilateral triangle is intended to alert you to the presence of important operating and maintenance servicing instructions in the literature accompanying the appliance WARNING To reduce the risk of fire or electric shock do not expose this appliance to rain or moisture 1 Read Instructions All the safety and operating instructions should be read before the appliance is operated 2 Retain Instructions The safety and operating instructions should be retained for future reference 3 Heed Warnings All warnings on the appliance and in the operating instructions should be adhered to 4 Follow Ins
2. No cassette tape loaded Protective tabs are broken off Head is dirty e Head is magnetized Tape is damaged or of poor quality Tape is bad stretched or deformed etc Cassette shell is warped Recording level is too high e Faulty connection between deck and stereo amplifier receiver Head is dirty Head is magnetized Worn out or poor quality tape Connection s improperly made e Affected by external electrical noise Dirty capstan pinch roller etc or poor tape Tape is wound unevenly Slack tape or tape spillage wound around capstan REC LEVEL control is set too low e Protective tabs are broken off Recorded section is too short Recorded section has low level portions Conversation etc has been recorded Dolby NR recorded tape is played back in OFF position cee Reinsert plug properly Rewind tape or flip it over Do not play damaged tapes Load a cassette tape Change tape or cover protective hole with cellophane tape Clean head e Demagnetize head using head demagnetizer Change to a different tape e Replace with a fresh tape A warped cassette shell cannot be fixed Replace with another tape and test Check input level with signal level meter and use lower rec level when recording Check and secure connections Clean head e Demagnetize head with head demagnetizer
3. e Change to better tape e Check input and output connections and reinsert properly Move away from electrical appliances TV fluorescent light electric blanket etc Clean capstan pinch roller or change to better tape e Rewind tape Insert pencil in hole in cassette shell and turn to take up slack Adjust REC LEVEL control Change tape or cover protective hole with cellophane tape Blank sections must be at least 4 seconds long Playback in appropriate Dolby NR position Playback sound is muffled and high frequencies are inaudible in Dolby NR Heads are dirty e Heads are magnetized When playing back tapes recorded on other decks meter deflections are greater smaller than when recording cassette decks Recordings cannot be made with TIMER REC deck only plays back broken off Track Configuration 4 track 2 channel stereo Motor oet DC serv motor capstan Flat torque DC motor reel Head ects Recording playback hard permailloy Erase double gap Ferrite head Rapid Transport 05 90 sec C 60 Wow and Flutter WRMS gaia EN DESEA less than 0 08 W Peak weeetees less than 0 15 Signal to Noise Ratio Dolby NR off Saat better than 58 dB Dolby B NR on TETEE EEEN better than 66 dB Dolby C NR on EERTE better than 74 dB Frequency Response ne Normal tape
4. 1 Batteries bg gg Weare ote Bene oe A Specifications subject to change without notice YAMAHA YAMAHA ELECTRONICS CORPORATION USA 6722 ORANGETHORPE AVE BUENA PARK CALIF 90620 U S A YAMAHA CANADA MUSIC LTD 135 MILNER AVE SCARBOROUGH ONTARIO M1S 3R1 CANADA YAMAHA ELECTRONIK EUROPA G m b H 2084 RELLINGEN BE HAMBURG SIEMENSSTR 22 34 F R OF GERMANY YAMAHA ELECTRONIQUE FRANCE S A 17 RUE DES CAMPANULES LOGNES 77321 MARNE LA VALLEE CEDEX 2 FRANCE YAMAHA ELECTRONICS UK LTD YAMAHA HOUSE 200 RICKMANSWORTH ROAD WATFORD HERTS WD1 7JS ENGLAND YAMAHA SCANDINAVIA A B J A WETTERGRENS GATA 1 BOX 30053 400 43 VASTRA FR LUNDA SWEDEN YAMAHA MUSIC AUSTRALIA PTY LTD 17 33 MARKET ST SOUTH MELBOURNE 3205 VIC AUSTRALIA YAMAHA CORPORATION 10 1 NAKAZAWA CHO HAMAMATSU JAPAN VJ53790 0 BWWB b gt Printed in Japan
5. BATTERY SAFETY Incorrect use of the battery can cause leakage or explosion Proper handling and use of batteries are as follows When the remote control will not be used for an extended period of time remove the batteries Never disassemble heat or throw a battery into a fire Do not connect short circuit the and poles of a battery with a piece of wire metal etc In case of leakage thoroughly wipe off all the electrolyte from the battery compartment and install new batteries lf your cassette deck fails to operate normally check the following table It lists common operating errors and simple measures which you can take to correct the problem If it cannot be corrected or the symptom is not listed disconnect the deck s power cord and contact your local YAMAHA dealer or service center for help Tape doesn t move in recording or playback REC PAUSE button faiis to function Sounds become faint and sometimes inaudible Recorded sound is distorted Tape is playing back but no sound is heard Excessive noise Excessive wow wavering of the sound Tape stops in the middle of recording or playback Fails to record Search does not operate High frequencies In the playback sound are emphasized and unpleasant to listen to and noise level hiss is also high e Power plug not properly plugged in End of tape Cassette shell is warped or damaged
6. 20dB 20 15 000 Hz 3 dB CrO2 tape 20 dB 20 16 000 Hz 3 dB Metal tape 20 dB 20 19 000 Hz 3 dB Harmonic Distortion 2E Normal tape a tana eae less than 1 0 Chrome tape oe EE less than 1 0 Metal tape ee ee less than 1 0 input Sensitivity Impedance LING 6 eens os Rees cle wheat bodes 70 mV 50 k ohms Output Levei amp Go oaot LING find ca E E A E E EEE 360 mV 1 2 k ohms Phones EE r A arts 0 1 mW 8 ohms Channel Separation 3150 Hz ae 40 dB Cross Talk 125 Hz PEIA 55dB S Normally recorded tape is played back Basic levels are different for different e Protective tabs on cassette have been a e Playback in OFF position Clean heads and carry out demagnetization with headdemagnetizer This is not a fault e Replace cassette tape or cover tab holes with tape etc GENERAL Power Supplies U S A and Canada model 120 V 60 Hz Europe model 220 V 50 Hz U K model and Australia model 240 V 50 Hz Other model 110 120 220 240 V 50 60 Hz Power Consumption 0 0 0 0c cee cee 18W Dimensions W xHxD 435 x 117 x 273 mm l 17 1 8 x 4 5 8 x 10 3 4 WOE ieee 5 Oh Beek be es 4 3 kg 9 Ibs 8 oz Accessories OUIDUE cord nate tivuawst ehie de eae q Australia model only 7 Remote control transmitter
7. are turned off before making any connection The White plug on the paired connecting cables corresponds to the Left channel and the Red plug corresponds to the Right channel Make sure that the left and right channel connections are properly made and that th plugs are inserted firmly The LINE OUT PLAY jacks on the deck should be connected to the Tape PB Playback Input jacks on your amplifier receiver and the LINE IN REC jacks on the deck should be connected to the Rec Out Rec Output jacks on your amplifier receiver Connect the power cord to an AC wall outlet or to an AC outlet on the rear panel of your amplifier receiver if provided Amplifier or receiver O Preparation for playback Be sure to set the AUTO MODE selector to the OFF position then turn on the POWER switch Set your amplifier or receiver to cassette deck function mode POWER ON lt 1 3 DO O0B OCC indicators When a tape is loaded the corresponding tape E a FEEN ee 0 0 NA O O 0 type indicator lights cai 4 REC PAUSE PLAY TRIM D PHONES STOP AUTO MODE gt OFF DOLBY NR Insert the cassette with the exposed tape side facing down and the side to be played facing you To close the compartment push in the compartment door until it locks shut To stop playback DOLBY NR switch setting in step 2 Press the STOP button Be sure to set the DOLBY NR switch according t
8. beginning of the current To search for the selection located selection before the current selection When the beginning of the current selection is played MUTE SEARCH lt 1 MUTE SEARCH T i MUTE SEARCH D The lt lt or gt t button and the MUTE SEARCH The lt lt or gt gt button and the MUTE SEARCH button should be pressed button should be pressed simultaneously simultaneously Intro scan To play back the beginning of each selection automatically PLAY INTRO SCAN lt J INTRO SCAN D gt co 0990 To play back each selection in the To play back each selection in ine forward To resume normal playback when the reverse direction g direction desired selection is found lt 1 gt PLAY Notes on Selection search and Intro scan The blank section between selections must be at eae 4 seconds With tapes recorded with low level or having excessive noise these operations may not be carried out Phrase repeat To repeatedly play a section or Full repeat an entire side lt lt PLAY AUTO MODE Phrase repeat E S 1 2 During playback press the PLAY 3 Press the lt lt button AUTO MODE button at the beginning of the at the end of the ion r section po Time section to be repeated tion The tape will be rewound HRASE PLAY 7 lt K to the point where the PLAY button was pressed and the selected section will be repeatedly played up to 8 times Full rep
9. the bottom portion of the compartment lid in place and push the top portion of the lid in until it clicks into place Oo inside of the cassette compartment Pinch roller DEMAGNETIZATION After 20 30 hours of use enough residual magnetism wili have built up on the heads to cause poor high frequency reproduction At this time you should use a commercially available head demagnetizer When demagnetizing the heads be sure to follow the instructions of the head demagnetizer carefully REMOTE CONTROL OPERATION RANGE The remote control transmitter uses infrared light to control the unit Therefore to function properly there must be a clear unobstructed path between the transmitter and the sensor on the deck The normal operating range is about 7 meters 23 feet and within 30 degrees perpendicular to the front panel Remote sensor 7 m 23 feet BATTERY REPLACEMENT When the operating distance of the remote control noticeably decreases the batteries are exhausted Immediately replace the batteries with new ones e Do not use an old battery together with a new one install the same type of batteries at the same time Do not use different kinds of batteries carbon alkaline Ni Cad etc at the same time even though they are the same shape There are two kinds of batteries in the market rechargeable and non rechargeable Read the caution labels on the battery carefully
10. 4 Set the AUTO MODE selector to the TIMER PLAY recording slightly before and end slightly after the position aciual broadcast receiving time to leave some room for later editing AUTO MODE 3 Set the AUTO MODE selector to the TIMER REC debacle position Pnras i LAY FUL REC AUTO MODE REPEAT TIME E OFF 4 C m At the preset time the timer will turn power on to the amplifier receiver and cassette deck and begin playback 4 The timer will send power to the amplifier receiver tuner and deck at the preset time turning all the components on and initiating the recording it will shut power off at th preset stop time CASSETTE TAPES There are many different types of cassette tapes available however they all conform to standard specifications so any brand may be used with the deck YAMAHA does not recommend the use of 120 minute length cassettes since the extreme thinness of the tape makes them susceptible to mechanical and recording problems Classification of Cassette Tapes by Formulation Cassette tapes are available in four basic types depending on their formulation or type of magnetic material and manufacturing process These four types are commonly known as Normal Type I NORM Chrome Type II CrO2 Ferrichrome Type III FeCr and Metal Type IV METAL and they each require specific tape deck adjustments for optimum performance AUTO TAPE SELECTOR DETECTION SLOTS The deck has a built in
11. Auto Tape Selector which automatically adjusts for the proper bias level and equalization according to the tape formulation all you have to do is load a cassette and the Auto Tape Selector does the rest The Auto Tape Selector determines what type of tape is loaded by sensing detector slots in the top of a tape shell Each tape formulation has its own characteristic hole markings which has been standardized by the tape industry Early model Metal Type V Metal tape formulation cassette shells do not have the slots for Auto Tape Selector operation As a result early model Metal type tapes recorded on another deck will be played back with the deck at the Chrome Type ll CrO2 settings YAMAHA does not recommend recording with this kind of tape on the deck e The deck does not have the required setting for Ferrichrome Type III FeCr tape since this tape formulation is not widely used Should you use a Ferrichrome tape it will be recorded and played back at the Normal Type I NORM settings And this will result in an unnatural high frequency emphasis This effect may be compensated for somewhat by adjusting the BIAS ADJUST to the plus direction during recording or by using the PLAY TRIM tone control and or the tone controls of your amplifier receiver during playback TYPE Il TYPE IV Detector slots Detector slots PROTECTING YOUR RECORDINGS All cassette tapes are provided with erasure protection holes to prev
12. eat AUTO MODE The AUTO MODE selector can be set during playback or Punase F before starting playback FULL 2A The side being played will be repeatedly played up to 8 times Preparation for recording Be sure to set the AUTO MODE selector to the OFF position then turn on the POWER switch Set your amplifier or receiver to cassette deck function mode 4 REC indicator PEAK level When a tape is DUB OUC meters loaded the TAPE COUNTER RESET y _ indicators corresponding tape type indicator lights POWER ON 1 3 BIAS ADJUST x 3 a DOLBY NA Insert the cassette with the exposed tape side facing down and the side to be recorded facing you To close the compartment push in the compartment door until it locks shut C TYPE REC PAUSE REC LEVEL BALANCE l p Play the program source to be recorded See Setting the recording level DOLBY NR switch setting in step 2 e FM stations transmit a 19 kHz pilot signal in addition to the broadcast program Sometimes this pilot signal may OFF No noise reduction leak into the audio output depending on the tuner and B TYPE MPX OFF Recording sources other than FM broadcast conditions This signal can cause improper broadcasts with Dolby B NR The DOB indicator lights operation of the Dolby NR systems Activating the MPX filter B TYPE C TYPE MPX ON settings will effectively B NR The DOB indicator lights C TYPE MPX OFF Rec
13. ent accidental erasure of recorded contenis There is a small tab covering the hole on each cassette and it should be broken off after recording a tape Without this tab covering the hole it is impossible to record onto that tape Thus you can safely protect a recording for as long as you wish without fear of accidental erasure should you wish to use a cassette tape protected in this way for recording simply covering the hole with adhesive tape will permit erasure and re recording When using Chrome Type II CrO2 or Metal Type IV METAL tapes make sure you do not cover the hole intended for the Auto Tape Selector operation TAKING UP SLACK IN THE TAPE As a precaution against tape entanglement and damage before inserting cassettes into the deck remove any slack in the tape This is accomplished by inserting a pencil pen or similar object into one of the spools and gently winding it until all the slack is removed You do not have to wind it too tightly Be careful not to touch the tape part itself It is very delicate and touching it may damage the ape and its recorded contents STORING CASSETTES After putting a cassette tape back into its case store in a location away from exposure to direct sunlight humidity high temperatures and magnetic fields away from television sets speakers etc High temperatures and humidity will damage the tape itself while exposure to magnetic fields may cause a loss of recorded mat
14. erial Avoid touching the tape surface with your fingers since dirt or finger oil will contaminate the deck s heads CLEANING OF TAPE PATH The continued high quality performance of your deck is dependent upon periodic cleaning of the heads capstan pinch roller and all surfaces over which the tape travels Normal use will cause an accumulation of dirt and dust on the heads capstans and pinch rollers This can lead to poor sound quality drop outs intervals with no sound unsteady tape speed loss of high frequency response etc Thus clean the heads and all surfaces over which the tape travels with commercially available cleaning cassette and fluid type cleaners The remote control transmitter is available with Australian model The keys which have the same names and marks are identical to the buttons on the cassette deck lt 4 SEARCH pr keys By pressing gt gt key the tape will advance to the beginning of the next selection and begin play By pressing key the tape will rewind to the beginning of the current selection and begin play REC MUTE key Operates the recording MUTE function of the MUTE SEARCH button on the deck BATTERY INSTALLATION Press the lid s locking tab down and at the same time pull out the battery compartment lid in the direction of the arrow 2 install the batteries size AAA RO3 with correct polarities Follow the diagram in the compartment Position
15. n when played back on any other cassette deck Dolby noise reduction and HX Pro headroom extension manufactured under license from Dolby Laboratories Licensing Corporation HX Pro originated by Bang amp Olufsen DOLBY the double D symbol 00 and HX PRO are trademarks of Dolby Laboratories Licensing Corporation With a commercially available audio timer it is possible to For details refer to the instructions of your audio timer make recordings and initiate playback at any time No change in any of the other connections between the automatically deck and amplifier receiver etc is necessary Make sure that all power cord connections between the timer and amplifier receiver are properly made AUTO MODE To an AC outlet SCL Fo ooa 0000ra a Tuner Amplifier or receiver Audio timer Timer recording Timer playback 1 After turning on the power to each component select 1 Turn on the amplifier receiver and adjust the volume the station on your tuner which you want to record and and tone controls turn down the volume on your amplifier receiver This 2 set the input mode selector of your amplifier receiver will have no effect on the recording signal level to the cassette deck function mode Remember to set the proper recording level 3 Set the timer to the time you wish to start and stop 2 Set the timer to the desired recording start and stop playback times It is advisable to set the timer to begin
16. o the system used for recording To fast forward the tape i Brass the iste button OFF For a tape recorded with DOLBY NR OFF B TYPE MPX OFF For a tape recorded with DOLBY B NR To fast rewind the tape even for a tape recorded with DOLBY B NR MPX om Press the lt i button a The DOB indicator lights C TYPE MPX OFF For a tape recorded with DOLBY C NR To adjust the volume level even for a tape recorded with DOLBY C NR MPX ON Use the volume control of the amplifier or receiver The DOC indicator lights To use headphones for private listening Dolby noise reduction manufactured under license from Insert the headphones plug into the PHONES jack Dolby Laboratories Licensing Corporation DOLBY and the double D symbol O0 are trademarks of Dolby Laboratories Licensing Corporation PLAY TRIM control adjustment When distortion or the absence of high frequencies is noticeable when playing a tape recorded on another cassette deck compensate the high nequency response with the PLAY TRIM control When distortion is When high frequencies are noticeable attenuate the absent boost the high high frequencies frequencies PLAY TRIM PLAY TRIM High frequency sound is a gt Sem distorted 2 Flat 8 High frequency sound is absent Selection search To play back a desired selection by searching for the beginning of the selection MUTE SEARCH To search for the next selection To search for the
17. ording sources other than FM To stop recording broadcasts with Dolby C NR The DUC indicator lights Press the STOP button C TYPE MPX ON Recording an FM broadcast with Dolby To stop recording temporarily C NR The DOC indicator lights Press the REC PAUSE button To resume recording Dolby noise reduction is an extremely effective method press the PLAY button of reducing undesirable background hiss on tapes This unit incorporates both Dolby B NR and the newer TAPE COUNTER and RESET button Dolby C NR system Dolby C NR is approximately twice Before starting recording press the RESET button to set as effective as the earlier Dolby B NR the counter reading to 000 Use this counter as aid in l locating a point on a tape l Bias adjusiment 7 The BIAS ADJUST control is for fine adjustment of the recording bias Normally it is not necessary to adjust this control since the built in Auto Tape Selector automatically adjusts the recording bias for different tape types When distortion is noticeable attenuate the high frequencies BIAS ADJUST When high frequencies are absent boost the high frequencies BIAS ADJUST 5 5 5 5 Setting the recording level in step 3 Play the loudest passage of the source to be recorded and watch the meter readings Adjust the REC LEVEL control so that the highest peak is between 3 dB and 8 dB Normally it is best to adjust the BALANCE control such
18. ted so that they are not likely to be walked on or pinched by items placed upon or against them paying receptacles and the point where they exit from the appliance 12 Cleaning The appliance should be cleaned only as recommended by the manufacturer 13 Non use Periods The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time 14 Object and Liquid Entry Care should be taken so that objects do not fall into and liquids not spilled into the inside of the appliance 15 Damage Requiring Service The appliance should be serviced by qualified service personnel when B C D The appliance does not appear to operate normally or E The power supply cord or the plug has been damaged or Objects have fallen or liquid has been spilled into the appliance or The appliance has been exposed to rain or exhibits a marked change in performance or The appliance has been dropped or the cabinet Gameged 16 Servicing The user should not attempt to service the appliance beyond those means described in the operating instructions All other servicing should be referred to qualified service personnel CAUTION READ THIS BEFORE OPERATING YOUR UNIT This unit is a sophisticated stereo cassette deck To ensure proper operation for the best possible performance please read this manual carefully Choose the installation location of your unit carefully A
19. that the LEFT and RIGHT meter readings are even PEAK dB 15 5 3 a 3 ARNI However if you feel that your recording needs further bias adjustment to compensate for absent or distorted high frequencies adjust this contro to your liking Output Level 48 Froquoncy Hz Q Insufficient bias Distortion is noticeable 2 Optimum bias 3 Excessive bias High frequencies are absent The OO mark indicates the Dolby noise reduction system standard level Highest peak QODDODOO00 OOOOOOGOOO ONODADNONO DNONOOODON OOOCODUOOO OOODODOOOO DOROMADOON ZB CING CINORM L 1 CrOe CF INV METAL Rec mute operation Inserting a blank space during recording During recording MUTE SEARCH Rec Return operation To return to the point at which the recording previously started During recording lt lt A 4 second blank interval is automatically recorded on the tape and then the deck enters Rec Pause mode lf a blank interval longer than 4 seconds is desired keep pressing for as long as you want When the MUTE SEARCH button is released the deck enters Rec Pause mode after making a 4 second blank interval DOLBY HX PRO DYNAMIC BIAS SERVO SYSTEM This unit incorporates the Dolby HX Pro system which automatically controls the effective bias to reduce distortion and noise improving high frequency response during recording Tapes recorded with this system retain the same high quality eve
20. tructions All operating and other _ instructions should be followed 5 Water and Moisture The appliance should not be used near water for example near a bathtub washbow l kitchen sink laundry tub in a wet basement or near swimming pool etc 6 Carts and Stands The appliance should be used only with a cart or stand that is recommended by the manufacturer 6A An applicance and cart combination should be moved with care Quick stops excessive force and uneven surfaces may cause the appliance and cart combination to overturn 7 Wall or Ceiling Mounting The appliance should be mounted to a wall or ceiling only as recommended by the manufacturer 8 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 surfaced 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 9 Heat The appliance should be situated away from heat sources such as radiators stoves or other appliances that produce heat 10 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 11 Power Cord Protection Power supply cords should be rou
21. utions as 10 explained later in this manual Be sure to read the Troubleshooting section of this manual for advic on common operating errors before 411 12 concluding that your unit is faulty Keep this manual in a safe place for future reference Valtage Selector general model only l The voltage selector on the rear panel of this unit must be set for your local mains voltage BEFORE plugging in the AC mains supply Rec Return operation To return to the point at which CROP OTHRETFFAOTATEHS ESE HTEAARAH THOT ARORA EHP ESE OES R APOE EEO TASH EERE HEHE OTA i e recording previous 19 10 Selection search To ebak a desired selection by as FECOROING sicsdatteieuer iene id a a a a lO searching for the beginning of the selection Timer playbac Intro scan To play back the beginning of each selection automatically aessa Rec mute operation Inserting a blank space during acordin ca bes cine e E Dolby HX Pro Dynamic Bias Servo Play Trim Control for Improved Playback Compatibility Dolby B C Noise Reduction with Other Decks Fine Adjustment of Recording Bias with Bias Adjust e Full Phrase Repeat Play Selection Search and Bi Control Directional Intro Scan e Recording Mute function Q c Q IN HNE 2 1E EC O To an AC outlet REAR PANEL CONNECTIONS Make sure that power to both the deck and your amplifier receiver
22. void placing it in direct sunlight or close to source of heat Also avoid locations subject to vibration and excessive dust heat cold or moisture Keep it away from sources of hum such as transformers or motors Do not open the cabinet as this may result in damage to the deck or electrical shock If a foreign object should get into the deck contact your local dealer When removing the power plug from the wall outlet always pull directly on the plug never pull the cord itself Do not apply excessive force when operating switches and knobs When moving the deck be sure to first pull out the power plug and remove all cords connecting the deck to other equipment Do not attempt to clean this unit with chemical solvents as this may damage the finish Use a clean dry cloth Never allow metallic items e g screwdrivers tools etc to come near the record playback head assembly Doing so may not only scratch or damage the head s mirror smooth finish it may also change the magnetic characteristics of the heads causing a deterioration in reproduction quality Although the record playback head used in this unit is a high quality head with outstanding reproduction characteristics it can become dirty through the use of old tapes or from dust accumulation over time This can have a serious effect on reproduction quality Clean the heads regularly with one of the commonly _ available head cleaners or with cleaning sol

YAMAHA KX-250 Manual

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