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)
| Lot #1 | |
|---|---|
| With Cleaning System | 100 sheets |
| Without Cleaning System | 155 sheets |
| Total | 305 sheets |
| Lot #2 | |
|---|---|
| With Cleaning System | 337 sheets |
| Without Cleaning System | 350 sheets |
| Total | 687 sheets |
3. Defect Detection
| With Cleaning System Lot #1 | |
|---|---|
| Auto Inspection | 0 points |
| Visual Inspection | 2 points |
| Without Cleaning System Lot #1 | |
| Visual Inspection | 2 points |
| With Cleaning System Lot #2 | |
|---|---|
| Visual Inspection | 0 points |
| Without Cleaning System Lot #2 | |
| Visual Inspection | 8 points |
Unitech PCB Cleaners Product Overview
