FRAM71B installation

[Hans Brueggemann]

(01-28-2021 11:27 PM)rprosperi Wrote:  Although you've resolved it, the basic reason is to remove anything connected to the bus, to prevent possible interference or confusion with the initial setup process. In reality, it's unlikely the HP-IL module would interfere, but if it's not installed, it's 100% clear it wont.

this is indeed the reason why the installation instruction asks you to remove the HP-IL module.
your HP-71Bs have the tendency to shrink over time. On some specimens it is now almost impossible to remove the IL-module without applying excessive force, which should be avoided.
So, i do recommend to those who have an HP-71B with "jammed" HP-IL module to not try to remove the module and just go ahead with the installation instructions.
However, make sure that the AC-adaptor is disconnected and all batteries have been removed.