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The inspection procedures for this lines of products are:
Our Checklist for Bluetooth headphone pre-shipment inspection:
CHECK LIST | COMMENTS | RESULT |
---|---|---|
Perform a carton drop test on the export cartons:10 times(1 corner 3 edges 6 faces) | (Pictures) | N/A |
Smell check-check if there are any strong offensive odor-II | FAILED | |
For 3M tape adhesive test: perform test on coating (painting/plating/ screen printing, etc) with 3M tape.-S2 | PASSED | |
Perform a rub test for printing and marking ; -S2 | PASSED | |
Perform a function test - match and receive the Bluetooth signal. | PASSED | |
Connect time – within 6 seconds | PASSED | |
Perform a fatigue test for all adjustable part. | PASSED | |
For each button function, including power on/off, volume +/-, forward/backward. | PASSED | |
Perform a check for blue tooth range and phone check(6-10m) -S2 | PASSED | |
Perform wobble test, put the unit on the flat surface, the unit should not tip or wobble during the test. | PASSED | |
Perform an endurance test (life test) during the whole inspection period | PASSED | |
Internal performance check. –S1 | PASSED | |
Talkback function: MIC | PASSED | |
Battery Voltage / Capacity: 5V +/- 0.5V | PASSED | |
Output power: 2M (1K HZ, THD 10%) | PASSED | |
Perform a Hi-pot testing -II | PASSED | |
Perform the standard power test-II | PASSED | |
Power consumption check:3Wx2(W=U2/R) | PASSED |
DEFECTIVES LIST | ||||
---|---|---|---|---|
CRI | MAJ | MIN | Picture | |
Dent mark | 1pc | |||
Scratched mark | 2pcs | |||
Broken | 3pcs |
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 |
3rd party preshipment products goods factory onsite inline final Random AQL PSI TPI FRI DUPRO third party on-site in-line pre-shipment QA QC check quality control assurance in China India Vietnam Thailand Malaysia Bangladesh Taiwan.