HP 3455A startup errors non-integer then cal code errs-where to start debug?

[ChuckDarwin]

Acquired dead, signs of previous repair work, living on my 'someday' shelf for a few years, first time inside the 3455A.  Got from power with no display to booting and displaying errors by replacing A1C14 (tant blew with fireworks), start-up related: A1U48 & U5 and then most of the large electro caps on A1 and A10 as several tested below their rating and others had excessive ripple.  At present, on every power-up I see displayed: "-99.9992", then cycling the TEST button cal errors "9" en "5".  The Service Group Summary pages (8-199.b) note that the display of an integer number indicates and Auto-Cal failure and "if only a non-integer number is displayed, the failure is in the logic circuits".  I have what appears to be both types of errors, starting with the display of a non-integer number.  Should I take this to be a logic error first and start debugging there, or is the non-integer number likely to be part of the cal 9 (ohms) failure and start debugging for code 9?