HEIDENHAIN TNC 426, User Manual

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HEIDENHAIN TNC 426, TNC 430 469
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:
TNC 426 CB/PB, TNC 430 CA/PA
Battery type:Three AA-size cells, leak-proof, IEC designation “LR6”
1 Open the logic unit: The buffer batteries are located next to the
power supply unit.
2 Open the battery compartment: With a screwdriver, open the
cover by turning it counterclockwise by 90°.
3 Exchange the batteries and take care to properly close the battery
compartment again.
TNC 426 M, TNC 430 M
Battery type:1 Lithium battery, type CR 2450N (Renata) ID No.
315 878-01
1 Open the logic unit: The buffer battery is located to the right of the
EPROMs of the NC software.
2 Exchange the battery. The new battery can only be inserted the
right way around.
To exchange the buffer battery, first switch off the TNC!
The buffer battery must be exchanged only by trained
service personnel!