HEIDENHAIN iTNC 530 (340 49x-05) - Manual (Page 646)

646 Tables and Overviews
1
8
.4 Ex
c
h
anging the Buf
fer Bat
tery
18.4 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 315 878-01
1 The backup battery is at the back of the MC 422 C
2 Exchange the battery. The battery contact accepts a new battery
only in the correct orientation.
CAUTION—danger to life!
To exchange the buffer battery, first switch off the TNC!
The buffer battery must be exchanged only by trained
service personnel.