[Techtoolslist] Help troubleshooting a 9010A

[barry2 at shilmover.com]

Matt,

That is exactly the info I am looking for.  I started to read this manual in more detail and was moving in this direction, but this clarifies it all.

Thank you!

Barry

--------------------

Some of the Fluke 9010a's (mine for example) might be different than these
schematics, but you can look here on pdf page 137.
http://arcarc.xmission.com/Test%20Equipment/Fluke/9010A%20Base/9010A%20Service%2
0Manual.pdf

You should know how to convert Hex to Binary.
HEX-08 -> D7=0 D6=0 D5=0 D4=0 D3=1 D2=0 D1=0 D0=0

If it's reporting BTS 8 is failing - then check the 4116 ram chip
responsible for D3 - which is at locate U12.

If BTS 12 are failing, it means D3 and D2 are stuck.  So check U11 and U12
or their buffers.

Matt

On Tue, 26 May 2009 21:41:10 -0400, barry2 at shilmover.com wrote:

> Hooked up the 2nd 9010A.  It returns:

> 

> R/W ERR @ C000 BTS 12 - LOOP? 

> 

> Barry

> 

> ----------------------

> 

> I been having trouble posting to the group...  trying again.

> 

> I have 2 non-working 9010A units.  On both they beep once, LEDs flash,

then

> 

> nothing.

> 

> Hooked up a working 9010A that I borrowed (thanks David).  Bus tests

fine. 

> RAM 

> returns the following:

> 

> R/W ERR @ C000 BTS 08 - LOOP?

> 

> Manual states:

> If a RAM failure occurs, carefully examine the diagnostic message.  The

RAM

> 

> Test is usually sufficient for deducing the failed component directly.

> 

> It then does not explain how to read the message.  :-)  I am new to this,

> so be 

> kind if its a stupid question.

> 

> I deduced that there is a Read/Write error at C000.  How do I "deduce"

the 

> failed component?

> 

> Barry

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