[Premium-Rx] Seeking WJ-9073-2 CPU PCBA data

[Scott Schappert]

Hello to the list !

 

 

I am hoping to understand the basic functional elements of the processor
board in the WJ-9073-2 tracking preselector.  I am hoping also, that someone
might have some knowledge of this instrument.  It seems that there is not a
whole lot of usable data out there.  If any one can help me, I would be very
happy to hear from you.

 

Some observations:

 

WJ / CEI PCBA part number 796294

 

8085 microprocessor

 

U5 firmware.  EPROM v 1.0.4 part number 841122

 

U6 EPROM 180215-12 (looks to be serial number specific)

 

U2 looks like a PLD

 

DIP switches S1 (7 position) and S2 (4 position)

 

I would like to know what the DIP switches functions are, and configuration,
if possible.  

 

If anyone has any documentation, from a manual to any WJ released promo
stuff, I would be delighted to compensate for time and copying needs as
required.  Please reply off the list if you can help !!!!!

 

Best regards to all !

 

 

-Scott

 

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