Re: 2235 AN/USM-488 power supply low voltages


Ozan
 

Voltages as follows


+5.2=4.3
+8.6=7.4
-8.6=-7.3
+30=+25.8
+100=+87.8
All the voltages are about 86-88% of their target value. Especially -8.6V is the reference for all other supplies so if it is off by some percentage all others will be off by about the same percentage. "Power Supply and CRT DISPLAY" adjustment section (page 5-4) of the manual gives the steps for R938 trim which should fix -8.6V and all other supplies if there is no other fault.

Ozan

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