Sorry op just realised it's the four branch with LIM's,
You really need an engineer in to run full diagnostics,it's an old panel but you should really have it on a maintenance contract.
Hope when you replaced the battery you powered back up with battery first then mains?
Seen both versions of the 9500 with blown pcb's because they haven't been booted battery first, plays a nice tune on LIM test, depending on software running though.
I suggest getting engineer in who knows this system, but stick around mate, you may get a more positive answer.
Good luck.
e manno
October 2012