1.Visual inspection
1.1 All plastic parts should be free from obvious phenomena such as sharp edges, shrinkage, silver wire, scratches, color mixing, water-intrusion, spots, breakage, melting shells, and bursting. Aluminum can not be installed with crooked, scratched, spotted, rough, damaged, poor fuel injection, deformation and different colors.
1.2 Check that the silk screen must not be printed incorrectly, missed, scratched, blurred, misplaced, or mismatched in color. The body screws should be free from missing, sweeping heads, sliding teeth, and wrong specifications. There must be no steps or clearances between the cold cover and the aluminum pass and the hairpin and the aluminum pass.
1.3 Push the switch not too loose or too tight.
2. Withstand voltage test
The voltage value of HI-POT machine refers to QA / QC specifications. The test parts are power cord, hoe, peripheral of switch engine, body screws, exposed metal parts. When testing, the switch engine should be at the highest level. The test time is 2 seconds each. No alarm sound during the test.
3. Output power test
3.1 During the test, the input voltage should be within the range of plus or minus 2% of the rated voltage. The power measured with a power meter must be within the QA / QC specifications of the corresponding model.
3.2 PCBA board function test, refer to the corresponding QA / QC specification requirements for detailed testing at each step.
4. Temperature test
Under the test condition of the rated voltage plus or minus 2%, when the curler is in the open or closed state, the temperature at which the heat transfer aluminum flux is stable is tested. The measured temperature must be within the QA / QC specification.
5. Internal machine inspection
5.1 First, check whether all materials used are correct according to the BOM.
5.2 Check whether the internal wiring and wiring are correct, whether the leads have been burned, peeled, and the metal wire core has been exposed, and whether the heat-shrinking shrinkage on the rotary terminal has been crushed, exposing the terminal, etc.
5.3 Check whether the leads are all fixed.
5.4 The insulating tape at the foot of the switch engine must be close to the switch engine. The insulating tape must cover the solder joints and the screws above the switch engine by more than 4mm.
5.5 Pull the lead at the solder joint by hand or tool. Pull the lead lightly and it cannot be pulled off or loosened.
5.6 There should be no false phenomena such as false welding, false welding, continuous welding, flying wire, etc. at the welding place. Whether the cable tie is in the correct position (should be as close as possible to the engine).
6. Special test
6.1 The forward torque of the screw is: outer diameter 2.8-3.0mm, the forward torque is 5kgf.cm.
6.2 Pad printing / screen printing position test: Pad printing, screen printing characters shall be wiped 15 times with 75% rubbing alcohol cotton cloth, the characters shall be clear and clear, and the surface of the characters shall be adhered with 3M adhesive paper. Repeat the character three times without discoloration.
7. Wire tension
8. Stand-alone drop test
Adjust the voltage to plus or minus 2% of the rated voltage, let the finished machine power on for 1 minute, and let it fall naturally three times from 90cm above the ground under the power-on state. Place the finished machine at 180cm and let it fall freely once.