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The device was received at the local service facility for investigation.The technical service report indicates: problem description (symptom): image clarity not good.Action taken at site (diagnosis): checked and done general service.Cleaned the camera lens and adjusted settings.Final report: unit is working fine.Job completed: yes.Probable root cause: cables.Hdmi cables.Connectors.Digital board.Power supply.Filter / fuse.Ac inlet board.Main board.Transition board.Intermittence between transition board and ch connector.Software.Camera head (sensor, sensor cable).Coupler (dust on optics, scratched optics, broken / shifted lenses, focusing mechanism, endoclamp, zoom ring).Problem toggling light source.Connected monitors.Leaking.Poor grounding (e.G camera head connection from cable to transition board).No/incorrect communication with light source.Soaking cap disconnection during sterilization.Electromagnetic interference (emi) from rf communication, hf surgical instruments, esd, or power surge.Cybersecurity attack.Pendulum ch inertial measurement unit (imu).Incident light from surgical scene is reflected by coupler/ch window.Use error.The reported failure mode will be monitored for future reoccurrence.
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