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HP-41C service module question
10-20-2014, 01:26 PM (This post was last modified: 10-20-2014 02:54 PM by Ángel Martin.)
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RE: HP-41C service module question
It looks like there are many more unanswered questions than available answers... I only knew of the existence of the following diagnostics ROMS:

1. ET-11966, for the 41C/CV - includes Card Reader tests
2. Service Module 0004160937 - for the CV/CX . No Card Reader tests.
3. ET-14048 HP-IL Diagnostics ROM
4. ET-11968 82143A Printer Service ROM

Never heard of the flag-wired or the "Port Extender I/O" counterpart though.
Either a red herring or a real myth? We'll probably never know...
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RE: HP-41C service module question - Ángel Martin - 10-20-2014 01:26 PM
RE: HP-41C service module question - dmh - 09-06-2021, 12:13 PM

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