HEIDENHAIN TNC 320 (340 551-01) - Manual (Page 443)

HEIDENHAIN TNC 320 443
14.3 Ex
c
h
anging the Buf
fer Bat
tery
14.3 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 ^F˜*¤OOF˜*"››F©˜a’˜pm˜›^F˜h"am˜*p"=˜pO˜›^F˜ ¢¬ (see 1 ,
figure at upper right)
2
Fhp¦F˜›^F˜Oa¦F˜’4F§’˜pO˜›^F˜ ¢¬ housing cover
3 Fhp¦F˜›^F˜4p¦F
4 ^F˜*¤OOF˜*"››F©˜a’˜pm˜›^F˜aV^›˜F=VF˜pO˜›^F˜ ˜Exchange the
battery. The socket accepts a new battery only in the correct
orientation.
5 Exchange the battery. The socket accepts a new battery only in the
correct orientation.
1
Backup your data before changing the buffer battery
To exchange the buffer battery, first switch off the TNC.
The buffer battery must be exchanged only by trained
service personnel.