General Category > Lisa Troubleshooting and Repair

Apple Lisa 2/10 starting up with Profile only; red light stays on

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mactjaap:
Thanks Ray, for looking so deep in this problem. Even if it is not possible to change this I really learn a lot of this!

I was planning to do your test last evening, but I ran into a stupid problem. The 2 on my keyboard refused to work. I managed to work around it last weeks, but if I have to type in commands I really need the two on my keyboard ( and I cannot use the 2 on my numpad...It will say ...wait... and nothing happens).
So today I will try to fix my keyboard.

mactjaap:
Keyboard is fixed. 2 is working again!

About his service mode test...should I use space between the commands?

"type in 4E 70 4E F9 00 FE 00 84 and hit enter."


So like this:
4E 70 4E F9 00 FE 00 84
or like this:
4E704EF900FE0084

And..... an enter after?      Select "3 Call Program" and type in address: 20000   

rayarachelian:
From what I remember you can enter spaces in between or not. It accepts it both ways. Generally I group it in two bytes, or a single byte. i.e. 4E 70 or 4E70

mactjaap:
I did this test in service mode:


--- Quote ---So you'd do this:

* Power on your ProFile, let it finish the test until ready.
* Power on your Lisa as usual.
* do not insert a floppy but try to boot off the floppy.
* When it beeps with an error asking for the floppy, hit Apple-S to enter service mode.
* Select "2 Set Memory"
* Enter address 20000 (note 4 zeros)
* type in 4E 70 4E F9 00 FE 00 84 and hit enter.
* Select "3 Call Program" and type in address: 20000 ( and hit enter..)
--- End quote ---

(I typed it in without spaces 4E704EF900FE0084, but tested also with spaces. Same result.)

It clearly make some reset. The video gets blurry and something is happening. But the Profile disk just stays running without a reset or disk scan.

I made a small movie:

https://youtu.be/HZepVikQ4UM

rayarachelian:
love the Spongebob refs :-D - why didn't the ProFile do its self test on power on before the Lisa was powered on? that's weird? Something's not right there.

Yeah, sadly the CRES line doesn't mean reboot to the ProFile, it means go back to state zero and listen for commands as posted last night in reply #9.

Also note that there are now Mac(128/512/KE)2Lisa, ADB2Lisa and USB2Lisa keyboard interfaces now.
i.e. https://www.ebay.com/itm/ArcaneByte-adb2lisa-Apple-Desktop-Bus-ADB-to-Apple-Lisa-MacXL-Keyboard-Adapter/203234120754

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