[time-nuts] Re: HP 3561a Service Manual

[Dan Rae]

Norman,

 From the code 0 7 26, if there is just one faulty RAM IC you will see 
down the bottom of the screen a RAM hex number from 0 to F. On page 6-59 
in Volume 1 you will find a list of the IC numbers that correspond to 
those RAM numbers.   However since you seem to have an additional Error 
Code 31 and the full list of RAM numbers displayed it is likely to be 
more than a simple one IC failure. 31 indicates RAM refresh test error, 
if that means anything to you, I'm a bit lost frankly.  It might be 
worth checking the board connections...

Good luck!

Dan