Standard for Inspection of Wireless Bluetooth Headset

2022-05-20

1. Sampling standard and sampling scheme:

Sampling standard: ISO 2859-1

Sampling scheme:

Normal test of sampling scheme for once, sampling level: G-III or S-4

Acceptable Quality Limit (AQL): very serious, not allowed; serious: 0.25; slight: 0.4

Sampling quantity: G-III 125 unit; S-4 13 units

2. Basic Safety, Function and Workmanship Inspection

2.1 Sales Package

No packing error; no damage to color box /PVC bag; no error or defect in surface printing; no error or defect in bar code;

2.2 Appearance

No scratches, poor paint spraying and silk screen printing, and molding mark on the appearance; no miscellaneous color, mildew and rust; no deformation, cracking and damage on the machine body; no defects on switches, control buttons, knobs and screws; no foreign matter in the machine body;

2.3 Component and Assembly

Components, parts, instructions, warranty cards, etc., are not missing or damaged; the assembly is not too tight or too loose (assembling main components only for basic function inspection); the front and back shells, side shells are free of too large gap/misalignment phenomenon; and the product is stable.

2.4 Cleanliness

There is no stain, color spot and glue mark on the product, no burr and flash.

2.5 Labels and Tags

Labels/tags are free of missing, misplacement, incorrect position, upside down, etc.

2.6 Printing, Paint Spraying, Electroplating

No instability, damage, relaxation or falling off; no inaccurate overprinting; no printing/coloring/coating loss, no fuzzy printing; no excessive or insufficient painting/coating;

2.7 Basic Function

No loss of function; no functional fault; no abnormal noise or vibration; no error in product operation/reaction while pressing down the key; no intermittent functional abnormalities; basic functions as described on the package; no abnormality after 5 times of short on/off.

2.8 Functional Safety

No safety hazard caused by water leakage; no safety lock failure/invalidity; no safety hazard caused by shell damage/deformation/melting; no dangerous moving parts to be touched; the handle/button/on-off key is fixed reliably, if it is loose, safety hazard will be caused; no sharp corners/sharp edges formed by normal use or user maintenance; the basic insulation of Class-II structure can be touched; live parts can be touched.

3. Internal Process Inspection

Reliability of grounding connection; effectiveness of power line fixation; no cold welding and welding spot defects; no loose parts (switches, motors, control parts, etc.); wiring slot shall be smooth, no sharp edge; no foreign matter inside.

4. On-site Test

4.1 Bar code scanning (bar code on the outer box)

4.2 Bar code scanning (bar code on the sales package)

4.3 Odor inspection (sales package)

4.4 Odor inspection (product)

4.5 Nameplate friction test (wiping marks/safety warnings with a water-stained cloth for 15s)

4.6 Nameplate friction test (wiping marks/safety warnings with a cloth stained with hexane for 15s) Note: hexane provided by the factory shall be used. This test is for reference only and it shall not be a substitute for laboratory test.

4.7 Product size and weight

4.8 Complex function

4.9 Assembly test

4.10 Free drop adaptability test of product

4.11 Input voltage test

4.12 Input current test

4.13 Full load efficiency test

4.14 Output power test

4.15 Output OCP test

4.16 Output coil temperature test

4.17 Charging test

4.18 Tightening/loosening test