On 21 Mar 2016 16:41:56 -0700, you wrote:
Test 41 fail is described as "INS,SO, and EOA flip-flops" circuit in the time base card that has no IC in sockets they are all soldered on the pc board, i just got this module hours ago and the self test pointed at this description in the manual..... so first things first what is a INS,SO and EOA ????...... i didn't have time to study schematics as i am presently working on my year end and will be tied to this choir for at least a week but a good short-cut to the problem from someone familiar with this issue is my first approach and would be welcomed.....re-seating ic's was a good idea that i tried and successfully repaired a 7a42 with thia aproach a few months ago......I am not an expert on the 7D20 so I just outlined the easy steps that
I would start with which do not require an extender.
Another thing worth trying is cleaning and reseating various card and
On Tue, 22 Mar 2016 00:18:51 +0000 (UTC), you wrote:
well i have one and the plug in plugs in 3 slots...... it looks like it's a major job.....PaulThat will leave plenty of time to study the manual.
From the description Dennis gives, it should be possible to narrow the
problem down enough to try replacing just a couple of ICs and look for
problems in a specific area.
Page 2-62 discusses self test 41 and what hardware is involved. I
would print out some schematics to mark up and follow the signal paths
to see what might cause the problem.