[ICOM] IC-2AT diode matrix question

[D C Macdonald]

Hi, Jack.

If there is a "Batteries Plus" store near you,
they can replace or build just about anything!!!

Mac, K2GKK/5



----Original Message Follows----
From: K6STU at aol.com
Reply-To: ICOM Reflector <icom at mailman.qth.net>
To: icom at mailman.qth.net
Subject: Re: [ICOM] IC-2AT diode matrix question
Date: Mon, 21 Mar 2005 16:05:08 EST


hi jack. The battery is a 3.1vdc lithium battery. The battery is charged  
via
the +5vdc circuit through D118 in series with D119 to the plus side of the
battery the neg side of the battery goes to ground. At the junction of the 
two
diodes there is the battery lead that goes to the cpu  to Pin 65. that cpu
was discussed earlier re the diode matrix connection. also  at the junction  
of
the two diodes there is a electrolytic cap the plus side connects to the
junction and the minus side goes to ground.  The junction voltage is 3.1  
voltsdc
with power off and 4.5vdc with the power turned on. The part reference
number is BT101 .  part number is BR2325-1HC. I don't know if they are  
still
available from Icom. Hopefully the battery has another number on it that  
you can
crossreference.
Gool Luck.
Mike



----  Original Message  ----
>From Jack, AE7DX.

The CPU reset did, in fact , work. I was able to give  my son his first
QSO on 146.52 simplex. Unfortunately when I turned the  rig off and then
back on later the '02AT was not functioning properly  (same symptoms as
before the CPU reset). I have to assume that the memory  backup battery
is not doing it's job and will have to be  replaced.

Oh, well, at least I'm getting nearer the end of the saga.  Thanks very
much for your assistance!

73,

Jack,  AE7DX
----