Focus motor maintenance, jitter repair, focus replacement, adjustment for near-far blurriness and principle explanation for the full range of Apple camera modules.

This chapter focuses on focus motor faults and maintenance of iphone cameras. It explains the working principle of the focus motor, then teaches repair methods for common faults such as motor jitter, focus failure, and near-far blurriness. Content includes focus motor maintenance, focus component replacement, and parameter adjustment to solve blurriness issues. Learners will understand how to diagnose focus-related faults accurately, perform motor maintenance and replacement, and adjust parameters to restore normal focus function.