Boot on standby and working indicator light are normal, and after loading disk VFDS screen display is normal, laser components, systems, servo control circuit is normal. Judge fault should be related to the power circuit. Because when press the PLAY button, each functional circuit and control circuit are from standby into work state, power supply circuit has larger electric current supply at this moment, if the power supply circuit components are poor performance and make the load ability, will make the protection circuit start and stop. Uv2service manual download site
 Uv2service manual download site
The machine power supply adopted separately excited type new type of switching power supply, over-current protection circuit is made up of ICll01 (4) feet within OCP circuit and peripheral components. Resistance in the circuit R1012 for flow sampling, when the current flows through the V - T is greater than 1.5 Ap - p, R1012 voltage drops greatly increases, the voltage is added to the ICll01 (4) feet, make the over-current protection circuit inside the IC action, have over-current protection purposes. Uv2service manual download site
 Uv2service manual download site
Disconnect R1031, electricity testing, the machine's function back to normal. Detect ICl101 (4) feet peripheral R1012, R1013 and R1014 element, found no problem. Doubt ICll01 internal problems, try a new STRM6559LF substitution under the original chip, welding R1031 again, electricity of commissioning, troubleshooting.Uv2service manual download site