Error help!!

Page 1-64 of the service manual:

Problem: Waveform Acquisition Failure

Reason:

-Front End Failure

-External Supply Failure-+12/-23 Volt Board Failure

-CPU Board Failure -CO2 Interface Board Failure (optional)

Solution:

-Replace Front End Board.

-Check External Supply Output voltage.

-Replace F1 fuse on +12/-23 Volt Board. -Replace CPU Board.

-Replace CO2 Interface Board

Seems like a good place to start.