How do I fix and clear Mazak alarm 1439?

Review the program. Clearing procedure: Tap alarm clear button.

NOTICEAlarm code

1439

CANNOT CHANGE UNIT

Q: What does Mazak alarm 1439 mean?

Mazak alarm 1439 is "CANNOT CHANGE UNIT". Changing a unit has been attempted when a unit change in the MAZATROL program was prohibited. • It is not allowed to change a unit for which data other than the unit name has been set up. • It is not allowed to change a unit if the current machining section is not selectable for the new unit (e.g., a unit for which an outside-diametral section has been selected as the machining section cannot be changed to a turning-drilling unit). Error type: Operation — wrong key or incorrect operation. Machine state: Operation continued — machine still running.

What it means

Changing a unit has been attempted when a unit change in the MAZATROL program was prohibited. • It is not allowed to change a unit for which data other than the unit name has been set up. • It is not allowed to change a unit if the current machining section is not selectable for the new unit (e.g., a unit for which an outside-diametral section has been selected as the machining section cannot be changed to a turning-drilling unit).

What to do

1Review the program.

Codebook — decoded

AError typeOperation — wrong key or incorrect operation

LStop statusOperation continued — machine still running

SClearingTap alarm clear button

Still faulted after these steps? Do not restart under load — ask the Mazatrol assistant.

Still stuck? Ask the Mazatrol assistant →