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Boot on standby and work lights are normal and loaded into the disc VFD screen display is also normal, indicating that the laser head component, control system, servo circuit is normal. Judge fault should be related to power circuit. Because when you press the play button, the function circuit and the system control circuit by the original standby state into the work of the state. At this moment, we need power supply circuit has a larger current supply, if the power supply circuit component has poor performance and the decrease of load ability, making the protection circuit to start and stop.Tt6service manual download site
The power of this machine uses his excited new switching power supply, over-current protection circuit is composed of and peripheral components of the OCP circuit ICll01 feet. R1012 circuit for current sampling resistance. When the current flowing through the V-T is bigger than the 1.5Ap-p, greatly increased the voltage drop R1012. After the voltage is applied to the ICll01 4 feet, the overcurrent protection circuit in the IC, played a flow conservation purposes.
Disconnect R1031, power test, the function of the machine to resume normal. R1012, R1013 and R1014 ICl101 of the periphery of the foot element detection, found no problem. Doubt ICll01 internal problems, raw chip under trial a new STRM6559LF substitution, and then welded on the R1031, pass electrical test machine, troubleshooting.
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