25 Jul
2019
25 Jul
'19
7:46 p.m.
On 7/23/2019 7:45 PM, Paul Koning wrote:
Okay, I looked at the slot and it looks like one of the first pins is
missing:
https://www.dittman.net/pro380/pro380missingpin.jpg
I removed the HD controller and it fails to boot from floppy as well.
The error codes change but seem to point to the RX50 drive being bad.
I had another Pro380 but it's come up missing so I can't swap parts.
I guess I'll keep an eye out for another one.
--
Eric Dittman
On Jul 19, 2019, at 10:52 PM, Eric Dittman via
cctalk <cctalk at classiccmp.org> wrote:
I pulled my Pro380 out of storage after getting a replacement
VR201 monitor. I connected it all together and on powerup I
get the following display:
http://www.dittman.net/pro380/screen.jpg
The tech manual says this is an error from slot 1 (the hard
drive controller) and the error is "Non-existent memory trap
occurred for longer than 20 seconds".
I reseated all the cards. I noticed three ICs are missing on
the hard drive controller but I don't know if they are empty
or someone removed the ICs (I can't remember where I got this
system). I can't find a picture of the controller to compare.
The missing ICs can be seen here:
http://www.dittman.net/pro380/missingics.jpg
That's normal. I have a working 380 (well, last time I powered it up) and it has the
same three empty sockets as yours.
The description of the error code isn't very clear. It might mean that the card is
detected (slot present register says there is a card) but the attempts to read the card ID
code and associated selftest ROM failed. That would explain why the second line is 177776
rather than the card ID (000401).
You might need to clean the connector contacts (connector and backplane) and also check
for damaged contacts. 
