HEIDENHAIN iTNC 530 (340 420) ISO programming - Manual (Page 489)

HEIDENHAIN iTNC 530 489
13.4 Ex
c
h
anging the Buf
fer Bat
tery
13.4 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:
Battery type: 1 Lithium battery, type CR 2450N (Renata)
ID Nr. 315 878-01
1 The backup battery is at the back of the MC 422.
2 Exchange the battery. The new battery can only be inserted
correctly.
To exchange the buffer battery, first switch off the TNC.
The buffer battery must be exchanged only by trained
service personnel.