Hi all, I have a problem with homing on my 1986 HT-20 Hitachi Sieki lathe Yaznac multi LX2 control.

1. When I home the machine, it moves through the homing sequence correctly, but when it gets to home, it does not put up a position number. At this point the control will not accept any other commands and I have to turn off the machine to try again.

2. When the control is on I get a prom error 63 every couple of minutes. I can't find this in the manuals.

3. The Z axis clutch was disengaged when the machine was delivered.

4. In the MDI mode the machine will accept a G28 and will put up a position, but this will not allow a program to be run.

Any information will be greatly appreciated, Thank You Justin