We are in the same position like you. We are in a tug-of-war with our QA with regards to this process. Their reason is that the machine is used for quality purposes which is to verify BGA solder quality so it must be under Quality. From my experience it is usually the Process Engineering that owns this, they write the Work Instructions and Inspection Criteria then hand them over to production for operation (production technician) and QC verifies the result or the data. QA doesn't own the process but is part of their tools to verify Quality.
For me personally I will be very happy to have this process or machine out of my responsibilities...less work and less blame when there are issues arising from this equipment process.
Work Smart Not hard is the proper approach. I'll just wait for the tug-of-war results!
Dreamy
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