Maintenance; Cleaning; Backup Battery Replacement - Acom 2000R Operating Manual

The procedure is now completed and the amplifier remains in OFF-menu with no user data in it. The
serial numbers of the RCU, amplifier and its tubes as well as the firmware revision code and DEFault
tuning settings, however, are preserved.
After this procedure set new data in OFF-menu (DEF, LOCK and CALL sub-menus)
and update the USR-tunings for the frequency segments and antennas to be used
(see S.4-1).

6. MAINTENANCE

The amplifier works with high voltages up to 3000V which is LETHAL! For
your safety pull the amplifier power plug out of the mains wall outlet and
WAIT AT LEAST 30 minutes EACH TIME BEFORE you remove the cover of
the amplifier. Do not touch any part inside while the amplifier is open because
some residual voltages may still be present.

6-1. Cleaning

Do not use solvents for cleaning - they may be dangerous both for you and
for the amplifier paint.
Do not open the amplifier. Cleaning of the amplifier and RCU outer surfaces can be done with a piece
of soft cotton cloth lightly moistened with clean water.

6-2. Backup Battery Replacement

If on the RCU display you get a message LOW BATTERY-DATA IS IN DANGER or LOSS OF STORED
DATA-CHECK BATTERY PLEASE, it is necessary that the nonvolatile memory battery for USR-TUNINGS
be replaced. This is a 3V/38mAh "coin - type" lithium battery with a diameter of 12mm (1/2inch) and
leads for soldering. The following types are suitable:
- BR1225T2-1 of RAYOVAC USA
- BR1225-1HC of PANASONIC
This is a complex and possibly dangerous operation. For this reason we recommend this work is carried
out by a trained service technician. See the TECHNICAL SUPPLEMENT for details.The expected life
of a new battery is at least 5 years.
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