1, cleaning before the same time with a clean soft paint brush (1 inches wide brush better use) and pressure of about 0.1Mpa[that 1kg/ per square centimeter] dry compressed air to clear the dust on the circuit board;
2, cleaning can be used to wash the circuit board of the special cleaning liquid (commonly known as washing board water), the liquid can be bought to a special store. Such as not washing water board, as follows (now we generally do not wash plate water) rinse with tap water, pay attention to the water to soft, not excessive, rush edges with soft brush carefully light brush, two sides of the circuit board are as is.
3, and then with a soft brush stained with neutral soap to carefully gently cleaning every a circuit board, especially plug jumper, slot fine cleaning, the operation should be attention not installed upright small capacitance element touch crooked; if it is found that wash out the soap dirty, must rinse with water after, reoccupy soap in scrub again, until the wash out the soap is white.
4, then the circuit board is completely washed with water. Note: must be thoroughly washed soapy water clean;
5, after washing is completed, with the pressure of about 1kg/ that 0.1Mpa[per square centimeter.