The vacuum system of the CPP (MultiStar) placement head utilizes a design where each segment features an independent vacuum generator, allowing for individual vacuum monitoring for each nozzle. Within ASM’s placement head verification procedure, the vacuum test is a critical step; it evaluates the vacuum generation capability of the pick-and-place circuit, the sealing integrity of the vacuum system, and the proper switching of the blow-off function. The test requires the use of specialized calibration nozzles (e.g., 12 "Type 2069" vacuum nozzles for the CPP) to measure vacuum levels at specific orientations. This helps identify potential leaks in the segment filters, vacuum hoses, or nozzle seals.
The vacuum test board serves to facilitate signal acquisition or provide the necessary interface connections for the aforementioned vacuum verification process.
