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PCBA test mainly includes: ICT test, FCT test, aging test, fatigue test, test in harsh environment of these five forms.

1. ICT test mainly includes circuit on and break, voltage and current value, and fluctuation curve, amplitude, noise, etc.

2, FCT test requires IC program firing, the function of the entire PCBA board simulation test, found the problems in the hardware and software, and equipped with the necessary patch processing production equipment and test frame.

3. Fatigue test is mainly to sample PCBA board, and perform high frequency and long time operation, observe whether there is failure, judge the probability of failure in the test, so as to feedback the performance of PCBA board in the electronic products.

4. Testing in harsh environment is mainly to expose the PCBA board to the limit value of temperature, humidity, drop, splash, vibration, and obtain the test results of random samples, so as to infer the reliability of the whole PCBA board batch products.

5. The aging test is mainly to power on the PCBA board and electronic products for a long time, keep them work and observe whether there is any failure, and the electronic products after the aging test can be sold in batches.

 

  The functional test of PCBA contains the contents:

 General part:

1: The power supply part test-whether the power supply is working normally, Test the voltage of each point- -use the comparator or other

2: Port (interface) test, Short & amp; Open, Cause an exception

3: Integrated circuit module ICI / O read and write function test-Flash & amp; EEPROM& CPU& SDRAM& Logic IC  etc

3: Special function test (inconsistent requirements of different circuit boards) -if with infrared ray, Need an external receiver

PCBA test, What test do you do, ICT & nbsp; or FCT, Different test methods can charge very different fees, Because ICT equipment and tooling are relatively expensive. But ICT can give good test results, which brings great benefits to the repair.