HEIDENHAIN TNC 310 (286 140) - Manual (Page 244)

14 Tables and Overviews 232
14.5 Exchanging the Buffer Battery
A buffer battery supplies the TNC with current to prevent the data in
RAM memory from being lost when the TNC is switched off.
If the TNC displays the error message Exchange buffer battery, then
you must replace the batteries. The batteries are located in the
control housing (refer also to your Machine Manual). The TNC also
has an power storage device that provide the control with current
while you are exchanging the batteries (for a maximum of
24 hours).
To exchange the buffer battery, first switch off the TNC!
The buffer battery must be exchanged only by trained
service personnel!
Battery type: Three AA-size cells, leak-proof, IEC designation „LR6“
14.5 Ex
c
hanging the Buf
fer Bat
tery