| 摘要 |
A method for manufacturing circuit boards at reduced cost includes the steps of producing a plurality of identical circuit board units on a big base plate at one time, so that each circuit board unit is connected to the base plate only at several connecting joints; conducting a circuit test for each circuit board unit; if any defective circuit board unit is found, using a cutting module to cut the connecting joints between the base plate and the defective circuit board unit and removing the latter to leave a void on the base plate; using a trimming module to trim off the broken connecting joints; using a shearing module to cut a substitute and good circuit board unit from a spare base plate; and moving the substitute circuit board unit into the void on the base plate, and fixing it in place in the void with adhesive.
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