Ive been reading the forum and looks like there are many who are really deep in to Mazak issues. So, hoping somebody has ideas.
Bought QT8 from 1994 with T32-2 lathe at this summer. Works fine, except multiple MC712 card failures. The laptop attaches through RS232 to 25pin socket on the side of the machine. From there the cable goes card behind keyboard, from there another cable to MC712. First failure tilted whole machine. New MC712 and everything ok again. Then it lost the data transfer, saying "CMT not connected". Sent both cards to electrics repair and they changed data transfer parts to them and made all internal cables, thought maybe cable failure was reason. The MC712 fix didnt work, and I again changed another used MC712. Data transfer worked one day and the "CMT not connected" error came again. Ran a month without data transfer and finally called to local Mazak service. They didnt know what causes the problem, but we solved it so that changed I65 parameter which changed the RS232 incoming data port from the MC712 to MC116. The RS232 cable was attached straight to the MC116 bottom port. Data transfer worked fine. For a day. After one day the whole machine went off during the thread machining and cannot turn power on again, total failure. Found out the MC116 burned. I have project SQT so I took MC116 from there and the QT8 gets power on again, but cannot run cause parameters came with MC116.
Question: what burns the card where the data transfer goes to? The RS232 cable and adapter from USB was changed after second MC712 failure. Only thing I havent changed is HP Elitebook I use for the data transfer, but sounds weird that it was the problem??
Another question. I bought SQT15M year 1992 with T32-3 with C-axle failure. Seller had stripped the C-axle sensors and outer end of spindle. It didnt come with mechanical drawings. Could somebody take some pics of the C-axle sensor section / electric C-axle brake area?
Bought QT8 from 1994 with T32-2 lathe at this summer. Works fine, except multiple MC712 card failures. The laptop attaches through RS232 to 25pin socket on the side of the machine. From there the cable goes card behind keyboard, from there another cable to MC712. First failure tilted whole machine. New MC712 and everything ok again. Then it lost the data transfer, saying "CMT not connected". Sent both cards to electrics repair and they changed data transfer parts to them and made all internal cables, thought maybe cable failure was reason. The MC712 fix didnt work, and I again changed another used MC712. Data transfer worked one day and the "CMT not connected" error came again. Ran a month without data transfer and finally called to local Mazak service. They didnt know what causes the problem, but we solved it so that changed I65 parameter which changed the RS232 incoming data port from the MC712 to MC116. The RS232 cable was attached straight to the MC116 bottom port. Data transfer worked fine. For a day. After one day the whole machine went off during the thread machining and cannot turn power on again, total failure. Found out the MC116 burned. I have project SQT so I took MC116 from there and the QT8 gets power on again, but cannot run cause parameters came with MC116.
Question: what burns the card where the data transfer goes to? The RS232 cable and adapter from USB was changed after second MC712 failure. Only thing I havent changed is HP Elitebook I use for the data transfer, but sounds weird that it was the problem??
Another question. I bought SQT15M year 1992 with T32-3 with C-axle failure. Seller had stripped the C-axle sensors and outer end of spindle. It didnt come with mechanical drawings. Could somebody take some pics of the C-axle sensor section / electric C-axle brake area?