2. When the EEPROM NG is displayed to the Liquid crystal display display on the hashboard tester, Look at whether the welding of U5 is ordinary;
Repair method: check the appearance, evaluate the chip capacitor or resistance in entrance, normally It truly is caused by inadequate chip soldering or perhaps a chip capacitor, resistor damaging or irregular resistance;
(1) In the event the integer is described, it's important to check whether or not the Amount change compact board is welded effectively, and to examine if the components over the modest board have Fake soldering.
8. To exchange a new chip, printing pins and soldering paste are demanded to make certain the chip is pre-soldered and afterwards soldered towards the PCBA for repair
a-3) Evaluate the resistance of R8 or R9 with a multimeter to examine if it is in just 10 ohms and the studying is not going to bounce randomly. Otherwise, be sure to substitute these two resistors
3. Listen to your soldering strategy when changing the chip. Right after changing any extras, the PCB board will not be deformed. Look at the changed elements and environment for missing pieces, open up circuits and quick circuits.
Examine the welding quality of your chip which connects sensor as well as little heat sink. The deformation of enormous warmth sink materials will result in very poor warmth dissipation in the chip and have an effect on the temperature difference.
eight. To replace a fresh chip, printing pins and soldering paste are needed making sure that the chip is pre-soldered and after that soldered towards the PCBA for repair
c-1) Condition one: The examination time is largely similar to that of the Okay board (usually the value of X does not improve each time it truly is analyzed). (The take a look at time refers to the time from urgent the beginning take a look at button towards the LCD exhibiting The end result ASIC NG: X).
(two) Next, if there is no dilemma just after Visible inspection, you may to start with examination the impedance of every voltage domain to detect whether or not You will find there's short circuit or open up circuit. If observed, it should be handled very first.
If any problems arise in the course of the test, they ought to be repaired based on the monitoring interface and the exam LOG prompts. The maintenance strategies for the initial exam as well as growing older examination of The entire equipment are a similar.
By bringing their own devices, participants can discover how to correct up to five broken equipment for the duration of each session, making the vacation pay for by itself. Don’t Allow technological particulars hold you back.
two) Less link: Less website link refers to that One of the 3 boards, one piece is missing. In most cases, there is a issue With all the connection concerning the hashboard plus the Management board. Check the cable to find out when there is an open circuit.
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