|
System Cleaning Effectiveness Test
1. Solder Joint defect
Above reflow area shows defect by dust attached before past printing.
(red squared area shows places where it's burned)
Sample photo shows mounting defects by some dust. Not sure when dust stick on PWB before or after screen-printing.
2. Test (PWB input numbers)
1) No 1 Lot
| With Cleaning system |
|
100 sheets |
| Without Cleaning system |
|
155 sheets |
| _________________________________ |
| Total |
|
305 sheets |
2) No 2 Lot
| With Cleaning system |
|
337 sheets |
| Without Cleaning system |
|
350 sheets |
| _________________________________ |
| Total |
|
687 sheets |
3. Defect condition
| 1) |
With cleaning system (No 1 Lot) |
| Auto inspection |
|
0 point |
| Eye visual inspection |
|
2 point |
| 2) |
Without cleaning system (No 1 Lot) |
| Eye visual inspection |
|
2 point |
 |
|
 |
| 3) |
With cleaning system (No 2 Lot) |
| Eye visual inspection |
|
0 point |
| 4) |
Without cleaning system (No 2 Lot) |
| Eye visual inspection |
|
8 point |
|
