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Solution: open the back cover of the machine, use a multimeter to inspect, and lock the loose
part.
5. Black screen of display
Reason: the display power supply is not turned on or the signal line is not connected properly
Solution: check the power and signal lines of the monitor.
6. The component frame offsets when moving the camera left and right or back and forth
Cause: lens calibration is not accurate.
Solution: calibrate the lens. Select a clear character or positioning hole on the surface of the
currently inspected PCB for lens calibration. There should be no similar pattern near the
calibration area, otherwise the calibration result will be inaccurate.
7. Too many misjudgments in normal inspection
Reason 1: the component frame offsets
Solution:
①
Check whether the PCB is fixed and fix the PCB and fixture.
②
Make the machine return to the calculation starting point to inspect whether
the coordinates of the components offset as a whole. Then, reset the
coordinate starting point.
Reason 2: incoming materials are changed (stand-by materials are used)
Solution: re-register a standard with new components and include the component standard
and the newly-built standard into the same group.
Reason 3: inadequate learning and debugging lead to false report.
Solution: debug a few more boards.
8. Missing judgment of component
Reason 1: the component has no registered standard
Solution: register standard for the component and optimize the lens.
Reason 2: there is no lens optimization after adding components.
Solution: optimize the lens
Reason 3: the error range of the standard linked to the component is too large.
Solution: reduce the error range of the component standard by reducing the error multiple or
re-register a standard to replace the component standard.
9. Constant offset or reversal of several components during inspection
Reason 1: the component frame has offset.
Solution: move the lens to the position of the component and pull the component frame