Chison SonoBook 7

The Chison SonoBook 7 has 5 catalogued probe and guide references here — pick the one matching your probe label for its fault table. Most of these come from Chison. The mix runs to linear, endocavity and phased-array, and failure patterns follow the design — lens membrane wear and strain-relief fatigue shows up most on this kind of head. Send the full probe label photo along with the console model — revision differences matter for the assessment.