HP97 The journey begins
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12-30-2021, 03:24 AM
(This post was last modified: 12-30-2021 03:24 AM by teenix.)
Post: #546
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RE: HP97 The journey begins
Hi all,
I just finished 4 days of 97 CPU board assembly. I could only make 4, I had hoped for 5, but one of the PICs was delivered in a sorry state with the pins bent. I carefully straightened them all awhile back but just before soldering it to the board I noticed a pin that I thought I'd missed. When I went to straighten it, it was loose and broke clean off at the plastic casing. An old Aussie saying when things go wrong - "bugger". There's no hope of fixing this, so a new unobtainium processor lives in the parts bin. Maybe one day I'll have a project for it that doesn't use that pin. I programmed all boards and a test LED was flashing as it was supposed to do and after a couple of seconds, the buzzer sounded 3 times telling me that the printer has not homed at switch on when it was supposed to. Seeing how it isn't connected yet, that too is a good sign. More testing and then should be off to the new owners soon. cheers Tony |
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