The machine uses a single chip GM766H-LF (IC300), external MXPM25LV010 MCU program storage. The power strip only 13V supply, drive plate, IC302 (MP1583DN) converted to 5V, then AICl084-33 to 3.3V supply IC300. Using the programmer check IC301 (PM-25LV010) and found no abnormal data.

Measuring the supply voltage, +13.3V,+5.12V,+3.285V. +1.802V are normal. In the actual repair, because due to improper display of power supply will not power on or died unexpectedly of failure is also very common, but such failures more difficult to troubleshoot, so the check at the end.


Related to the display in addition to the MCU (IC300) and procedure code (IC301), also used to store the parameters of the OSD menu FLASH chip is--24C08 or 24C16. The machine is using a A81SC is actually 24C08.

Try IC200 (A81SC) after emptying, welding, power to test the machine, digital and analog signal screen screen appear, troubleshooting.