Lesson 1: VMI (Visual Mechanical Inspection)
What is the purpose doing VMI?
To find out physical defect on electronic circuit.
Why?
Most of the functional failure can cause from hardware failure and software failure. The hardware failure more easier to identified if compare with software failure.
How to do VMI?
By doing physical inspection using microscope (30X zoom) to identified the physical defect such as Expose Copper, Crack, Solder Bridging, Solder Join, Melt, Explode, Burn, Shorted and others.
Why need microscope?
It much easier to inspect defect on SMD's Components(Surface Mounted Device). Naked eye difficult to recognize failure defect on extra small components.
all this remind me to this proverb: "Jika tiada angin masakan pokok bergoyang". Hope you get what i meant?
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