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Yamaha CD-2 service manual wanted

Discussion in 'Electronic Repair' started by [email protected], Apr 21, 2005.

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  1. Guest

    Greetings, I am looking for a service manual for my Yamaha CD-2 Compact
    Disk Player. It has problems tracking "some" CDs on the inner tracks,
    and in one case, not seeing the disk at all. It boils down to the
    output level being low from the laser on the inner track (disk opacity
    is affecting this). Adjusting the tracking gain has helped but I would
    like schematics so I can increase the gain on the laser output

    I have ruled out all mechanical issues. On one of my CDs the output
    from the laser is 900mv on the inner track and as high as 2v on the
    outer tracks. On one CD in particular (Headpins Turn it loud) the inner
    track output is 400-500mv and 1.5v on the outer track. Once the output
    drops below 500mv the player cannot tell if there is a disk loaded when
    it tries to read the TOC (table of contense) information.

    Thanks for reading...

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