DX Engineering Acom 2000A Battery Replacement

Memory battery replacement

TECH TIP

Acom 2000A – Memory Battery

Replacement

Reference your ACOM 2000A Owner's manual for other details prior to this procedure.

Normally the ACOM 2000A battery lasts about ten years. If it is a newer amplifier, check the battery

voltage first.

You will find the battery on the interface board behind the front panel. You can easy remove the

battery and solder the new one.

There is only one precaution when soldering a new battery:

The battery negative lead is directly connected to the chassis/ground. If your soldering iron tip is

grounded too, it will make a short when touching the positive lead. This can be avoided if the

amplifier will be totally disconnected. Remove all cables - the power cord, keying cable from the

transceiver, both coax cables, RS-232, grounding and whatever else is connected there.

Alternatively you can leave the amplifier connected and only unplug the soldering iron from the line

socket while soldering the new battery.

NOTE: The amplifier memory will be erased. You will have to tune the amplifier up on all bands and

antennas after the change.

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Phone: (800) 777-0703 ∙ Tech Support and International: (330) 572-3200

Fax: (330) 572-3279 ∙ E-mail:

DXEngineering@DXEngineering.com

TechTip – ACOM 2000A-Battery replacement – 4 Sept 2020

Table of Contents

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Page 1 Replacement Reference your ACOM 2000A Owner’s manual for other details prior to this procedure. Normally the ACOM 2000A battery lasts about ten years. If it is a newer amplifier, check the battery voltage first. You will find the battery on the interface board behind the front panel. You can easy remove the battery and solder the new one.
Page 2 Removing the front panel of ACOM 2000A ================================= Safety first. WARNING HIGH VOLTAGE! The amplifier works with voltages up to 3000 Vdc, which are LETHAL! You must unplug the amplifier from the line (mains) wall outlet and WAIT AT LEAST 30 minutes before removing the cover of the amplifier.
Page 3 WARNING HIGH VOLTAGE! The amplifier works with high voltage up to 3000V which is LETHAL! You should never work alone in the room and you should always have somebody nearby, who is capable of rendering FIRST AID in case of any unfortunate accident! Immediately after having removed the top cover, make sure that no residual DANGEROUS VOLTAGES are present inside.
Page 4 3. Removing the front panel Fig.3 Front panel screws Four screws on bottom and two more on top hold the front panel. The screws are metric size M3 - 3mm diameter (abt.1/8"). Bottom four screws are with cross- recessed Philips-1 heads while the two top can be with a straight slit (flat screwdriver).
Page 5 Fig.5 Interface and CPU assembly Reassemble is to be done in the reverse order. Battery Location Photos ===================...