Problem: No power.
Possible Cause: Power switch not on. Solution: Turn power switch on, either at rear of the unit or atop the strobe indicator.
Problem: Motor or platter not turning.
Possible Cause 1: Motor switch not on. Solution: Turn motor switch on, that is atop the strobe indicator and press the start / stop switch.
Possible Cause 2: Belt not connected to motor (for belt drive unit). Solution: Locate the belt on the underside of the platter, on the surface of the inner ring but do not remove it. Place platter on turntable and line up the rectangular opening on the platter with the brass motor spindle. Lift the belt off the platter and attach it to the motor spindle. Press the start / stop switch.
Problem: Hum in output.
Possible Cause 1: Poor ground connection. Solution: Ensure turntable ground wire (if available) is properly connected to mixer's ground terminal (Digital turntables do not require an external ground wire).
Possible Cause 2: Loose cartridge or headshell connections. Solution: Check cartridge connections to headshell wires, making sure that the colored wires don't have any breaks and are connected to the respective cartridge pins.
Possible Cause 3: Shorted input source RCA cables. Solution: Isolate and replace the damaged cable.
Problem: Audio output level is very low.
Possible Cause: Incorrect output connections.
Solution: If an analog turntable is being used then make sure that it is connected to the PHONO input on the mixer or stereo system. Use a pre-amp to connect the turntable to, if no PHONO input is available.
If a digital turntable is being used then check that the PHONO / LINE switch is set to the LINE position if connected to the LINE input on the mixer or stereo system.
Problem: Audio output level is very high.
Possible Cause: Incorrect output connections.
Solution: If a digital turntable is being used then check that the PHONO / LINE switch is set to the PHONO position if connected to the PHONO input on the mixer or stereo system.
Problem: No audio output, audio cuts in and out or only audio from one side.
Possible Cause 1: Dirty stylus, worn or faulty stylus or cartridge. Solution: Try cleaning stylus tip with a stylus cleaner (such as Stanton's SC4). See link.
Isolate and replace the defective stylus or cartridge.
Possible Cause 2: Loose cartridge or headshell connections. Solution: Check cartridge connections to headshell wires, making sure that the colored wires don't have any breaks and are connected to the respective cartridge pins.
Possible Cause 3: Oxidation or dirt build up on 4 pins in the toneam that make contact to the headshell. Solution: Clean the 4 pins using a pencil head eraser and then with some rubbing alcohol on a Q-tip
Problem: Digital output not working.
Possible Cause 1: Incorrect output connections. Solution: Make sure to connect the turntable's SPDIF digital output to a computer sound card or stand alone CD recorder that has the same single SPDIF or coaxial input.
Possible Cause 2: Digital recorder or sound card spec don't match. Solution: Make sure the recorder or sound card specs match the specs of the turntable's digital output: 44.1kHz sampling rate, 16 bit word size, PCM format.
Possible Cause 3: Wrong digital cable used. Solution: Only use a SPDIF or coaxial type digital cable with a 75ohm load.
Problem: Cartridge skipping.
Possible Cause 1: Incorrect tonearm and cartridge setup. Solution: Properly setup tonearm and cartridge settings as specified in turntable owners manual or cartridge setup instructions. See link.
Possible Cause 2: Worn out or damaged stylus. Solution:Replace the defective stylus with a new one.
Possible Cause 3: Dirty, worn or scratched records. Solution: Clean records using a vinyl cleaner (such as Stanton's VC1). See link.
Use records with little or no wear or scratches.
Possible Cause 4: Turntable not level. Solution: Make sure turntable is placed on a sturdy and flat level surface.
Problem: Audio feedback.
Possible Cause: Turntable to close to speakers.
Solution: Face speakers away from turntable or move turntable away from speakers signal wave path.
(Troubleshoot Guide courtesy of Stanton Magnetics. All rights reserved.)
DJ Basic - Turntables Troubleshooting
Friday, 24 July 2009Posted by WIN at 00:07
Labels: DJ Basic(s)
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