How to inspect wireless Bluetooth headsets? Headphone inspection standards and methods

I put on my headphones and walk on the street, and the hustle and bustle of the world has nothing to do with me. A few years ago, everyone still used wired headphones. With the development of technology, wireless Bluetooth headphones appeared, which are convenient, simple, and full of technology. So how do you inspect wireless Bluetooth headphones? What are the standards and methods for inspecting wireless Bluetooth headphones?

1. Bluetooth headset inspection sampling standards and sampling plan:
Sampling standard: ISO 2859-1
Sampling plan:
Normal inspection single sampling plan, sampling level: G-III or S-4
Acceptable Quality Limit (AQL): Extremely severe, not allowed; Severe 0.25; Slight 0.4
Sample size: G-III 125 units; S-4 13 units

2. Basic safety, function and workmanship inspection of Bluetooth headsets

• 2.1 Inspection of Bluetooth headset sales packaging <br>Packaging is correct; color box/PVC bag is not damaged; surface printing is correct or defective; barcode is correct or defective.

• 2.2 Appearance inspection of Bluetooth headsets <br>The appearance must be free of scratches, poor paint, poor silk screen printing, and mold marks; no color changes, mold, or rust; the body must be free of deformation, cracks, or damage; there must be no defects in switches, control buttons, knobs, screws, etc.; there must be no foreign objects inside the body.

• 2.3 Inspection of components and assembly of Bluetooth headsets <br>Components, parts, instructions, warranty cards, etc. are not missing or damaged; the assembly is not too tight or too loose (only assemble the main components during the basic function check); front and rear shells, side shells (no gaps are too large/misaligned); the product is not unstable.

• 2.4 Inspection and cleanliness test of Bluetooth headsets <br>There should be no dirt, stains, glue marks, burrs or burrs on the product.

• 2.5 Inspection of labels and hang tags for Bluetooth headsets <br>Labels/hang tags must be correct, including those that are missing, misplaced, incorrectly positioned, or upside down.

• 2.6 Inspection of printing, painting and electroplating of Bluetooth headsets <br>No instability, damage, looseness or falling off; no misregister; no missing printing/coloring/plating, no blurred printing; no excessive or insufficient painting/plating.

• 2.7 Basic function check of Bluetooth headset inspection <br>No missing functions; no functional failures; no abnormal noise or vibration; the product operates/responds without errors when the buttons are pressed; no intermittent functional abnormalities; basic functions are consistent with the description on the packaging; no abnormalities occur after briefly turning the device on/off 5 times.

• 2.8 Functional safety inspection of Bluetooth headsets <br>No safety hazards caused by water leakage; no safety lock failure/ineffectiveness; no safety hazards caused by damage/deformation/melting of the casing; no moving parts that are dangerous to touch; the handle/button/switch is securely fixed and will cause safety hazards if loose; no sharp corners/edges formed by normal use or user maintenance; basic insulation in Class II structure is accessible; live parts are accessible.

3. Bluetooth headset inspection: internal process inspection <br>Reliability of ground connection; effectiveness of power cord fixation; no cold welds or poor solder joints; no loose parts (switches, motors, controls, etc.); wire troughs should be smooth and without sharp edges; no internal foreign matter.

4. On-site inspection and testing of Bluetooth headsets

• 4.1 Barcode Scanning (Outer Box Barcode)

• 4.2 Barcode Scanning (Sales Packaging Barcode)

• 4.3 Odor Inspection (Sales Packaging)

• 4.4 Odor Inspection (Product)

• 4.5 Nameplate friction test (use a damp cloth to wipe the logo/safety warning for 15 seconds)

• 4.6 Nameplate friction test (use a cloth soaked in hexane to wipe the logo/safety warning for 15 seconds) Note: Use hexane provided by the factory. This test is for reference only and cannot replace laboratory testing.

• 4.7 Product dimensions and weight

• 4.8 Complex Functions

• 4.9 Assembly Test

• 4.10 Product drop adaptability test

• 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 Tighten/Release Test

• 4.19 LED Indicator Check

• 4.20 Headphone Box Wired Charging Function Test

• 4.21 Earphone box discharge function test

When the product is 100% completed, before or after packaging, we will inspect each product's appearance, workmanship, function, safety, and other customer-specified checkpoints at our full inspection factory or at a customer-specified location, strictly distinguishing between good and defective products and reporting the inspection results to the customer in a timely manner.