CHAPTER 34
Video terminal accessories
405.1200.037.2 - Rel.: 2.21 of 25/02/2008
34-4
1/2AA Battery
The function of the battery is both to maintain the contents of the RAM
(work recipes) and to keep the internal clock going when there is no power
supply.
The battery should be replaced about every 12 months.
• The battery needs to be changed either when the Battery LED (on the VT
keyboard) comes on or when indicated by the
. Failure to change the battery will lead to the con-
tents of the data memory being lost.
• The battery must be substituted with the VT power off. At this point a
high capacity condenser will momentarily preserve the RAM memory
information (information is typically retained for 24 hours).
Discarded batteries should be placed in appropriate containers.
Procedure for inserting or substituting the battery:
• Check that the power supply is not connected.
• Take off the hatch covering the battery compartment of the VT (see
).
• Pull off the black plastic safety-cover that snaps over the battery com-
partment.
• Insert the new battery checking that the polarities are correct.
• Push the safety-cover back on till it snaps into place.
• Replace the hatch covering the battery compartment of the VT (see
).
• Reconnect the power supply.
Cell battery
The function of the battery is both to maintain the contents of the RAM
(work recipes) and to keep the internal clock going when there is no power
supply.
The battery should be replaced about every 12 months.
Battery to be used
Lithium 3.6V ½AA
Battery to be used
Lithium 3V cell battery
CR2032
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