CMOS memory for OSP5000, 2135 error code
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    Default CMOS memory for OSP5000, 2135 error code

    Hi!
    Im trying to replace bubble memory boards on my MC-4VA (OSP5000) with newer CMOS memory. I have tried with two types of processor boards- type MIIA and MIIB. Unfortunately in both cases I get an error message on a screen: 2135 bubble memory time out ERROR 4. Lithium batteries appear to be in good state- multimeter shows 3.7V. What could be the reason for such error code? I just really want to get rid of those bubble memory boards.
    Guntis


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