Question about Pioneer CDJ-800 Turntable

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Trouble shooting the DJP unit.

Thanks for your advice but I have one quick question. How would I go about checking the DSP unit?

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  • Jason Kew Jul 27, 2008

    Don't be sorry. You have been a great help. I wish there were more service techs like you in this world....


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Well, any multimeter that can read voltages will work. We normally just replace it, as it is easier, quicker, and cheaper than us spending an hour testing the voltage of each pin on the IC. You will need a service manual for the unit, in order to get the voltage rating for each pin of that particular IC (IC101). We'll just replace it, as part of the maintenance procedure. We'll also replace IC103 and IC108, which are both OPAMPS, and also cause play/read issues.

It's kind of like giving your car a tune up... you replace all the belts, spark plugs, cables, etc, whether or not it needs it. It's just a good idea to replace all the items that may go bad shortly. Another part we'll replace is the Stepping Motor and Loading Motor. As I said, all part of the 'tune up' for these units.

In your particular case, you'll have to look at IC101, IC103, and IC108 - all likely suspects, in addition to the other components I specified.

Sorry, there is no easier method.

- Davis
DJ Pro Audio

Posted on Jul 26, 2008

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Hmm, that's a tough one. Perhaps the DSP might be damaged, only allowing the retail CDs to read. There really is no reason why only some CDs read and other's dont other than damage to one of these components:

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Good luck!

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