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Thread: Apple Macintosh Plus 1 Mb with some issues.

  1. #1

    Default Apple Macintosh Plus 1 Mb with some issues.

    Hi to All,

    I have received an Apple Macintosh Plus 1 Mb with original Apple HD... a very beautiful machine but... it seems it has some issues.
    For example, today at the first turning on I received the error page with code 30010.
    I turned the Mac off and on and it started flawlessly... after a while it decided to reset with error nr. 22AC6.
    No more errors for a quarter of hour after which I decided to stop testing.

    Does anybody have idea on what is happening?

  2. #2

    Default

    Class codes 2 and 3 are related to bad memory.

    Sad Mac Error Codes Description

    On the Original ROMs (Macintosh 128K 512k, Plus):

    When you press the interrupt button on the side of your Macintosh when starting up, a sad Mac icon on the screen with '0F000D' and some bits cycling under the icon indicating it is performing a memory test.

    This numeric code is in two parts:
    The first two characters are the class code. The class code tells what part of the diagnostic program found the error.
    The second four are the sub code. The sub class code tells what the error was. In the case of a bad RAM chip, the sub class identifies the bad chip (this was very helpful to homegrown upgraders).
    Class Code Sub Code
    1=ROM test failed Meaningless
    2=Memory test--bus subtest identifies bad chips
    3=Memory test--byte write identifies bad chips

  3. #3

    Default

    Quote Originally Posted by bibilit View Post
    Class codes 2 and 3 are related to bad memory.

    Sad Mac Error Codes Description

    On the Original ROMs (Macintosh 128K 512k, Plus):

    When you press the interrupt button on the side of your Macintosh when starting up, a sad Mac icon on the screen with '0F000D' and some bits cycling under the icon indicating it is performing a memory test.

    This numeric code is in two parts:
    The first two characters are the class code. The class code tells what part of the diagnostic program found the error.
    The second four are the sub code. The sub class code tells what the error was. In the case of a bad RAM chip, the sub class identifies the bad chip (this was very helpful to homegrown upgraders).
    Class Code Sub Code
    1=ROM test failed Meaningless
    2=Memory test--bus subtest identifies bad chips
    3=Memory test--byte write identifies bad chips
    So in my case it could be the issue is related to the RAM chip? Only to replace it...? And to upgrade to 4 mb...

  4. #4

    Default

    Probably,

    But keep in mind that a resistor should be cut in order to get 4 Mb

  5. #5

    Default

    Quote Originally Posted by bibilit View Post
    Probably,

    But keep in mind that a resistor should be cut in order to get 4 Mb

    ?????? Really ?????
    I haven't read anything about this...

  6. #6

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