Actually, please DO top post! Its far, far easier to read on s mobile phone that way :)
From: John Robertson Sent: 02/02/2013 18:13 To: Technical Tools Mail List Subject: Re: [Techtoolslist] Troubleshooting a defective pod
Andre Huijts wrote: > 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 ? > > > Don't Top Post please!
Take the ROM image and pass it through the Signature Generator in the FIDE generator you can download here:
John :-#)# > > > 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 >> >> >>
-- John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames) www.flippers.com "Old pinballers never die, they just flip out"
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