Hi,
You have a fault more than likely on your CCC.
You need to send your boards for testing, I would send the following so they can be tested and inspected for dry joints (called cold joints in the USA):-
CCC
Mechanism Control
Pricing Board
They need to go to a Rowe Ami speciaist for repair.
Regards
Alan Hood
ami-man
UK
alan-hood@datex.co.uk