Question about Clarion DC625 6-Disc CD Changer

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Clarion RDC634 Error 9

Hi, I bought a old Toyota 1998 car which came with Clarion RDC634 6 CD changer. When ever I tried to play, it gives Error 9. From internet I found that this is for weak RF. How to solve this problem? How to change to another frequency, I do not have any manual with me. Please help. Thanks,

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Re: Clarion RDC634 Error 9

First thing to suspect would be the antenna cable or antenna. Check it is connected properly to the back of the unit, and check the cable all the way along to the antenna - these are prone to internal corrosion when they get a bit old. Easiest way to check is to get a new antenna and cable (they are cheap) and plug it in directly to the back of the unit. Check the ground connection of the unit is good - any terminals might need a clean up - disconnect the battery first. These guys have a service manual for sale; so do these; here's the link for a free download of the owner's manual (it says is for the 635, but is also for the 634); Hope this helps :)

Posted on Jul 07, 2007

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CDAC ER2 usually means a cd is stuck, not reading properly, or that the magazine is stuck or broken. take out all cds and try it with a known good cd (one that played ok in the past). if that doesn't work, try unplugging the unit and plugging it back in.

if it still doesnt work, take the magazine out, power it up so that you get the "no mag" error, then insert the magazine with no discs and see if it still errors out with ER2. if it does, then the magazine is bad, or the changer is bad..

if it works, then try the known good disc again, if it works now, your magazine was probably stuck, or one of the other cd's isn't liked by the changer.

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