How do I fix and clear Mazak alarm 390?

The batteries must be re-charged or replaced. For the battery information, refer to the Maintenance Manual. Clearing procedure: Power OFF → fix cause → Power ON.

ALARMSMazatrol Assistant

NOTICEAlarm code

390

BATTERY VOLTAGE LOW

Q: What does Mazak alarm 390 mean?

Mazak alarm 390 is "BATTERY VOLTAGE LOW". The batteries for retaining absolute position data are running low with a voltage drop, or have become exhausted. * Depending on the machine, the message ABSOLUTE POSITION WARNING may be displayed in red. Error type: NC Equipment — system hardware/software error. Machine state: Operation continued — machine still running.

What it means

The batteries for retaining absolute position data are running low with a voltage drop, or have become exhausted. * Depending on the machine, the message ABSOLUTE POSITION WARNING may be displayed in red.

What to do

1The batteries must be re-charged or replaced.
2For the battery information, refer to the Maintenance Manual.

Codebook — decoded

EError typeNC Equipment — system hardware/software error

LStop statusOperation continued — machine still running

MClearingPower OFF → fix cause → Power ON

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

Still stuck? Ask the Mazatrol assistant →