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SMT equipment repair experience


​Equipment repair of equipment suppliers and users are very important.

Suppliers generally focuses on equipment fault diagnosis, and then replace it can provide the minimum accessories unit. While users focus on the timely repair of equipment, to ensure that non-stop, then buy the smallest parts unit. The smallest unit parts often suppliers is a very precious, such as circuit control board, motor drive, etc., is thousands of dollars less, more than tens of thousands of dollars, ordinary users is not going to spend large sum of money to reserve these expensive accessories. However, once a part is broken, buy to suppliers, time is longer, less two weeks, more than a month, far hydrolyze nearly thirsty problem. So users of the equipment suppliers alone is not enough, and will pay a big price, he should be for the equipment maintenance personnel, and encourage them to repair the bad parts. Talked about in the table below, for example, a servo motor controller problem, the high speed machine can't move, the whole production line can't production, now looking for a supplier to buy need to 00, and there is no spot, at least two weeks; And after maintenance personnel inspection found just within the controller power supply power output module (GTR) has been bad, GTR can buy in the local market, so only takes about a day, less than 0, which solve the problem, time efficiency.

Equipment maintenance personnel's quality is very important, should have the mechanical and electrical integration, automatic control, computer knowledge. SMT equipment is highly automatic control equipment, technology is adopted by the international advanced, so another quality of maintenance personnel is to accept new knowledge quickly.

Equipment maintenance personnel should be at least: multimeter, oscilloscope, IC information or instant online access to relevant information, generally don't count on along with the machine has the control board, driver board, such as circuit schematic diagram, are on their own analysis, draw the part of the circuit diagram, to analyze the control circuit, find out the problem.


Maintenance example:


Equipment model

The problem

reason

The solution

Universal HSP4782A/4791A

PC and devices do not communication, other normal

Inside the machine on the CPU1 RS232 communication IC destroyed by static electricity, etc

Replace the IC (supplier does not provide IC parts, can only buy CPU1, US000.00)

Universal Gluer 4713C/D

PC and devices do not communication, other normal

On the machine within the CPU J11 RS232 communication IC destroyed by static electricity, etc

Replace the IC

Universal HSP4782A

Turret motor does not turn, servo motor drive according to flow

Drive within the power supply power output module (GTR) has been bad

Replace the common GTR

DEK255R.S.(丝印机)

After startup, the machine without any action.

PC126 pair of power amplifier transistor on motor drive board has burnt out.

Replace the triode, with performance similar to replace.

DEK265GS(丝印机)

Guide rail automatic adjustable width can't complete the initialization (can)

The shaft drive motor drive IC (L297) on the board and power amplification components (L298N) have been aging.

Replace the IC

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