294 HEIDENHAIN Technical Manual iTNC 530 HSCI
3.21 Buffer battery
Battery type: 1 lithium battery, type CR 2450N (Renata), ID 315878-01
If the voltage of the buffer battery falls below 2.6 V, the error message
Exchange buffer battery appears. If the voltage does not rise above 2.6 V
again, the error message is reactivated after 30 minutes.
To exchange the battery:
The buffer battery is on the motherboard of the MC 6xxx.
Loosen the screws securing the housing cover of the MC 6xxx.
Remove the cover.
The buffer battery is at the border of the PCB:
In the MC 6x41, it is next to the slot for the HDR:
Make a data backup before changing the buffer battery.
When exchanging the buffer battery, remember:
Switch off the machine and the TNC.
The buffer battery may be exchanged only by trained personnel.
When exchanging the buffer battery, ensure electrostatic discharge
protection. Improper handling can result in damage to the components or
assemblies due to ESD!