11. Test optimization

11.1 Make use of customer specifications and electrical characteristics of products to synthesize the most effective test items that can detect product problems, so as to avoid a large number of test items flowing into the manufacturing process. The lower limit of specifications such as 12V and 5V in the similar power supply part shall be placed in the lower limit of customer specifications to reduce some false tests.

11.2 The optimization of test items takes into account the aging of production line equipment, and the reading value during measurement is due to

The loss will be low, so we need to pay attention to the definition of specifications, which can reduce the false test. Models with more signals adopt the self-test mode, which is carried out according to the flow light mode.

11.3 Determine the hardware circuit by signal on and off greatly shorten the test time

11.4Ripple: Due to the low accuracy requirements of customers for DC output, and the rising cost of Ripple test equipment (oscilloscope), it is implemented to spot check.

11.5 Since the refrigerator control board is tested by the main control board and the display board, and the program is updated regularly, but the test method is not different (it can only be measured by the customer's whole machine), it is recommended that the software engineer add the module of the power-on display software version number when writing the program, so as to prevent rework caused by batch misburning and missing burning in the burning room

12. People skills, change

12.1 For the phenomenon of poor quality judgment and inspection ability of products due to the large number of new inspectors, it is stipulated that all inspectors only have the right to find and raise quality problems, but not the right to judge. The monitor is responsible for tracking and judging all quality abnormalities.

12.2 The first sample that passes the on-site inspection and inspection mechanism products every two hours must be sent to the monitor for reinspection