Error code 99 on Sony CDX-525RF 10 Disc Ce

Most cd changes only work with like brands. Sony with Sony .jvc with jvc. Find a manual for a brand new model on google or the the manufacturer and see if it has a problems section

Error 99 is CD not up to speed. Either the CD is slipping, Defective CD, pickup is unable to read sectors and is either dirty pickup or pickup going bad.

Is it always the same CD you are playing? Is the CD smudged with finger prints or dirty? If not suspect the CD itself. This will require Repair or Replace, as E-99 is a classic malfunction & unit will need to be taken apart, "unless" there is a CD stuck in the Unit.

If you have loaded a Blank Cartridge & clicked Eject & found no extra CD, then you will need to have a Reputable Shop Repair Typically this is the Logic I.C. & / or the Servo Motor. Sometimes you can find the same Unit on E-Bay, Craigs List, etc for less than Repair

Changer Error Codes:
E-00: Poor Cable connection.
E-01: Magazine not properly set in changer.
E-02: No Disc in magazine.
E-03: CD does not have selected track number.
E-04: Disc is dirty, upside down or unreadable.
E-10: No data is recorded on the MD. The player plays the next disc automatically.
E-99: Changer malfunction, disc may be caught in machine or changer requires service.

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run a lazer disc cleaner through it serveral times

maybe you need to clean you disks

e-99 indicates that there is some type of mechanical jam, the microprocessor requires reset, or the system had some major failure. try to remove power from the system for a few moments, and then reconnect. this will rest the microprocessor and possibly restore function. if there's a disc stuck in the magazine, or stuck somewhere in the loading or unloading sequence, it's sometimes possible to free this but the changer will have to be removed from the vehicle and partially disassembled.

manual should have a list of error codes ,pioneers pretty ok like that , u can call them direct , meantime make sure disc is clean ,try store bought disc , not burned ones , sounds like a mechanical faliure , if unit was recently shipped to you , it may have required "transport "screws . disc tray may have slid into playing area inside unit .

The changer has a mechanical slide system inside it. It may be binding up around those positions. You may want to take the cover off and reposition some of the excess grease into those slide tracks and try it again. Or you could just be happy with a functioning 7 CD changer.

maybe the lens in covered with dust , try to clean it , or it is broken. Who knows , break the device and see it for yourself. good luck

yes is posible to be fix it but you need to take it to a repair shop request an stimet before they get it fix.