Kees van Engelen, PA3KVE
Copyright © 2020 by Kees van Engelen  ·  All Rights reserved

HOW TO CHANGE THE EPROMs IN THE NRD-535
(by Kees PA3KVE)
After removing the covers
Remove the two top screws and pull back the snap-ins (both sides)to remove the front panel
The display unit taken from the rest....remove the knobs, nuts and washers
   Remove the printboard from the display unit (5 screws)
The CPU unit is the most right, seen from the front.
The one with the white sticker is the one..... (IC3)
  
 
      Once the print is removed from the front, the EPROM of the display unit is seen (also the one with the white sticker, and also IC3)
 
 
 


If you want more information about the versions of the firmware, please let me know by email.
If you want more information about the versions of the firmware, please let me know by email.