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The QC check inspections for earphones will check according to below checklist:
CRITERIA | RESULTS |
---|---|
Quantity | NOT OK |
Production Status/specification | OK |
Packing and Packaging | OK |
Markings | OK |
On-site tests & special requirement | OK |
AQL Workmanship | Within AQL |
There are below onsite quality checking list for earphone QC inspections:
Please find below for an examples of the quality tests for earphone inspections:
CHECK LIST | COMMENTS | RESULT |
---|---|---|
Perform a carton drop test: 10 drops from the correct height based on carton weight as defined in ISTA 1 A(6 faces, 3 edges,1 corner) - On 3 cartons – packed products should not get damaged | On 3 cartons, 61 cm height x 10 times | PASSED |
Perform a barcode-scanning test-The barcode should be scannable and have the correct number.-S2 | No barcode | N/A |
Perform a rub test and an adhesive test-Perform the rub test and adhesive test on any and all printing found on the item-S2 | On 13 pcs | PASSED |
Wire pull test-S2 | On 13 pcs, factory no puller available for test, only normal force by hands | PASSED |
Internal checked on 3 pcs | On 3 pcs | PASSED |
Function checked on 50 pcs | On 50 pcs | PASSED |
Perform on-site testing for impedance, sensibility and Frequency, pls input actual data in below table. On 200 pcs | On 200 pcs, please refer to below table | FAILED |
An earphone onsite testing results:
Earphone tests | Impedance | Margin | Sensibility | Frequence | Input power | Wire length | Plug type | Speaker D | ||
---|---|---|---|---|---|---|---|---|---|---|
specs | 32-39 OMHS | ≯1.8OM HS | 108dB+/-10% | 20-20kHZ | 40mw | 1.6m | 3.5mm stereo | 10mm | ||
Unqualified qty | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
Unquality % | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
Sample 1 | 37.56 | 37.50 | 0.06 | 104.6 | 106.7 | Ok | 40 | 1.60 | All 3.5mm | All 10mm |
Sample 2 | 36.83 | 37.58 | 0.75 | 103.8 | 105.6 | Ok | 40 | 1.64 |
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