Need help with HP-71 HP-IL Interface Module

[Sylvain Cote]

(01-14-2021 11:51 PM)wallyhp71b Wrote:  I have other Application & Ram Modules that are recognized when installed and pass the ROM TEST 1G 2G 3G 4G.
Any more troubleshooting ideas that I could try?

The HP-IL port connector is the same as the front port connectors, so take one of your application module that you have verified that it is working, insert it into the HP-IL port and try VER$ to see if the module version is displayed.