Re: Troubleshooting a defective pod

One more thing:

The manual says to do a ROM test and it gives the addresses in the table but it fails to give the correct signature ?

Anyone knows it for the Z80 pod ROM V1.1 ?

Op 2 feb. 2013, om 15:53 heeft Andre Huijts <a.huijts@upcmail.nl> het volgende geschreven:

> OK, I recently traded a working 8088 pod (still have two others) for a working Z80 pod.
> I also (temporarily) have a 9010A added to my Fluke stuff.
>
> Now I figured (like the Z80 pod manual suggests) to troubleshoot my defective Z80 pod with the 2nd working one.
>
> The working one self-tests fine on both my 9100A and the 9010A. The defective shows problems on both the 9100A (not recognized please reset) and 9010A.
>
>
> Now....I am confused about the powering up of this set-up.
>
> The normal set-up seems to say to do the following when using a "normal" UUT (no pod):
>
> 1) power off troubleshooter and UUT
> 2) connect pod to troubleshooter
> 3) power on troubleshooter, do self test
> 4) plug in ribbon cable to UUT
>
> So...basically you have to connect the ribbon cable to the UUT while the troubleshooter and POD are powered up ? Feels kind of strange to plug it into the UUT's processor socket while it carries power ?
>
>
> Anyway, next I start reading page 5-12 in the Z80 pod manual and here I get confused:
>
> Under "Prepare to troubleshoot the inoperative pod as follows" it says:
>
> 3) Connect the pod under test to +5V etc. etc......so here they seem to say to DO power up the "UUT (= the defective pod)" BEFORE turning on the power of the troubleshooter.
>
> Step 4) says: Connect a troubleshooter (the 2nd one in my case, the one that will do the troubleshooting) to a 2nd (working) pod, apply power to that troubleshooter and then connect the ribbon cable to the sockpet of the defective pod....
>
> So basically, this is the other way around of the normal set-up.....which I find strange.
>
> They further cloud things by the next text in BOLD:
>
> "Do not apply or remove any power with ribbon cable connected between second pod and inoperative pod."
>
> So this means I should have to first remove the ribbon connector from the socket of the bad pod before turning any troubleshooter off....right ?
>
> I fear I already did some switching on/off, basically as if it were to be a regular UUT. The good Z80 pod still self-tests OK so I hope I didn't damage anything.
>
> Can someone please tell me what is the right way to do this ?
>
> I did see Power failure messages at some point.....
>
>
> André Huijts
> andre.huijts@upcmail.nl
>
>
>
>
>
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André Huijts
andre.huijts@upcmail.nl

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Received on Sat Feb 2 11:12:54 2013