SERVICE MANUAL TNC 151/155
Pawa 6
Kundendienst
Se&ion 2.2.2
Error message "BXCBAUGB BUFFER BATTBRY"
Particular mention should also be made about the implications
of the instruction to exchange the buffer battery:
If the dialog display indicates "EXCHANGE BUFFER BATTERY",
new batteries must be inserted within one week.
The buffer battery compartment is located behind the screw
cover in the lower left-hand corner of the operating panel.
When exchanging the batteries,
special care should be taken
that the polarity is correct (POS-pale of battery outwards).
The battery needs to have IEC designation "LR 6" and must be
of the leak-proof type. We especially recommend the use of
VARTA Alkaline batteries type "4006". With discharged (or
missing) buffer batteries, the memory for the machine para-
meters
and for the user-program will
be
supported only as long
as the mains remains switched on. Continued operation is still
possible but the memory contents will become erased in the
event of a mains failure. Please note that the TNC has to be
switched on when exchanging the buffer batteries. If a mains
failure occurs during a battery change (or when the battery is
discharged or missing), the re-entry of the machine para-
meters
and the user-program will be necessary.
Use of the integrated supervision system
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