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<DIV><FONT face=Arial size=2>I've made some progress on this problem. I've
manage to track down a bad diode at CR1. I now get the input on EXTAL
through U22 as it should. I'm still getting the pod timeout -attempting
reset error though. It seems I'm not getting the E clock signal at pin
34.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I've been comparing the schematics to my unit and
they don't match. Is there more than one schematic available? The one I
have is the October 1982 version. I hate working blind without
schematics.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Mark Hooks</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=markhooks@earthlink.net href="mailto:markhooks@earthlink.net">Mark
Hooks</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=Techtoolslist@flippers.com
href="mailto:Techtoolslist@flippers.com">Techtoolslist</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, February 13, 2005 8:04
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [Techtoolslist] Help needed with
a 6809 Pod Problem, 9010A</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>I'm at an impasse trying to fix my broken
6809 pod. I've scoured the techtoolslist archive and have not found a
solution. I'm getting the pod timeout -attempting reset error
message when using a 6809E processor. Here's what I know: the
pod works fine with a regular 6809, the dip switches are set right for the
6809E, the 6809E processor I'm using works fine in a working star wars board,
the clock source at the input to U22 looks good on the scope, the U22
enable line is high,but the u22 output is stuck low. Therefore, there is no
input on the processor EXTAL. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I think this is the problem. Where do I go
from here, replace U22? Before I go hacking around on a rare pod, I want
to make sure I'm on the right track.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Mark Hooks<BR>A.K.A.
Pinmania<BR>850-894-8103</FONT></DIV>
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Received on Mon Feb 21 17:37:03 2005
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