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TROUBLESHOOTING 

 
 
 

PROBLEM POSSIBLE 

CAUSE POSSIBLE 

SOLUTION 

No sound, meter 
lights are not on 

 

Power cord disconnected 

 

Power off at source 

 

Connect power cord 

 

Check AC source 

No sound, meter 
lights are on 

 

Interconnect not properly 
installed 

 

Preamp set to incorrect 
source 

 

Preamp set to tape 
monitor source, if 
preamp has such a 
function 

 

Power amplifier is off 

 

Verify installation of 

interconnects  

 

Turn preamp to input 

where tuner is connected 

 

On preamp defeat tape 

monitor function 

 

Turn amplifier on 

Low signal strength 

 

Antenna not connected 
properly 

 

Incorrect antenna 
 

 

Station too distant 

 

Improper antenna 
position/ placement 

 

Check antenna connection 

 

 

Check instruction manual 

for correct antenna type 

 

Change your antenna 

 

Rotate your antenna or 

mount your antenna higher 
or near a window if indoors 

Intermittent sound 

 

Mute switch is in the 
“ON” position 

 

Turn the mute switch to 

“OFF” position 

 

 

Summary of Contents for MD 90

Page 1: ...Magnum Dynalab MD 90 90R ANALOG FM TUNER INSTRUCTION MANUAL...

Page 2: ...FUNCTIONALITY 6 DISPLAYS AND METERS 6 IMAGE OF MD 90 7 CHECKING OUT YOUR MD 90 8 TUNER REMOTE OPTIONAL 9 IMAGE OF RC1 REMOTE 10 TROUBLESHOOTING 11 RECEPTION TECHNIQUES 12 Antenna Cabling 12 Types of...

Page 3: ...of your FM reception with the highest degree of consistency available in the industry To insure that all specifications on our tuners are met at ALL frequencies we manually align our tuners front end...

Page 4: ...E SHIPPER UNTIL YOU HAVE BEEN ASKED TO DO SO DO NOT DISCARD THE PACKING MATERIALS AND CARTONS Should there be a necessity to return the unit for any reason it must arrive safely and suitably packaged...

Page 5: ...ohm to 75 ohm balun transformer 4 Make sure that the center conductor of the cable is properly inserted into the connector If you do not possess an antenna attach the temporary wire enclosed in box t...

Page 6: ...eard while looking for programs We recommend that with the optional remote system you leave the Mute switch in the ON position E TUNING KNOB Rotating this knob allows you precise control of the fine t...

Page 7: ...ter This meter is calibrated to never hit 10 this is done to protect the meter mechanism I FREQUENCY DISPLAY Displays the station via a numeric value the frequency that your tuner is dialed into Displ...

Page 8: ...face of your tuner should be on Place the stereo mono switch B on diagram to the Mono position your stereo light should now go off Now turn the stereo mono switch back to the Stereo position and your...

Page 9: ...il your center tune meter is set or your magic eye tube is closed 4 Your Precision remote gives you the ability to store and scan up to 20 preset stations To program a preset station first tune to the...

Page 10: ...10 IMAGE OF RC1 REMOTE...

Page 11: ...plifier is off Verify installation of interconnects Turn preamp to input where tuner is connected On preamp defeat tape monitor function Turn amplifier on Low signal strength Antenna not connected pro...

Page 12: ...used Types of Antennas Multi element Yagi This is a unidirectional antenna capable of pulling in very distant stations due to its high gain the higher the gain the better These types of antennas are...

Page 13: ...good folded di pole There are many styles of antennas but all of them are based on one of these types FM RECEPTION AIDS AND ACCESSORIES We have already alluded to the importance of a good quality ante...

Page 14: ...HD Mono 0 10 THD Stereo 0 18 Stereo separation 50 0 dB AM suppression 70 0 dB SCA rejection 80 0 dB IF rejection 80 0 dB 19 KHz and 38 KHz component rejection 75 0 dB Audio frequency response 1 dB 20...

Page 15: ...TE OUTLET 9 PROTECT THE POWER CORD FROM BEING WALKED ON OR PINCHED PARTICULARLY AT PLUGS CONVENIENCE RECEPTACLES AND THE POINT WHERE THEY EXIT FROM THE APPARATUS 10 ONLY USE ATTACHMENTS ACCESSORIES SP...

Page 16: ...propriate service depot The foregoing is in lieu of any other warranties expressed implied or statutory and the manufacturer neither assumes nor authorizes any person to assume for it any other obliga...

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