Installation Instructions

Modules used in FS-250 Systems are upgraded from
time to time to improve their operation or to add to
their capabilities with new features. These upgrades
are sent to users as kits which include a replace-
ment IC(s) for the module printed circuit board.
INSTALLATION GUIDELINES
Carefully follow the installation instructions below to
upgrade an FS-250 NAC processor on the main
board or main firmware on the display board.
CAUTION:
Electronic equipment is extremely vulnerable
to static discharge. Observe precautions for
handling static sensitive devices when
performing this upgrade.
To upgrade a module, remove the old IC(s) and
replace it with the new IC(s) from the kit as follows:
1. Notify the person in charge of the fire alarm
system (and the Fire Department if they are
connected to the FS-250) that the control panel
will be temporarily out of service while the
firmware upgrade is installed.
2. Upload your program to a PC if it is not already
saved.
3. Open the panel door and remove all power to
the control panel.
4. To upgrade the display board, you must uninstall
it from the front inner door. Disconnect the
ribbon cable and display cable from the display
PC board. Remove the screws and place them
to one side.
5. Locate the IC number and designation on the IC
in the upgrade kit.
6. On the PC board of the module being upgraded,
locate the IC. This IC has a label attached to the
top surface that indicates the IC number and the
software revision currently installed. Make certain
that the IC number on the module corresponds to
the IC number in the replacement kit.
7. Note where and how the IC is positioned.
8. Remove the old IC(s) from its socket. (Refer to
Figure 1 for the location of U9 on the FS-250
main board and Figure 2 for the location of U4 on
the display board.) Do this by lifting one end of the
IC slightly, then the other end. Continue this
process until the IC comes free. Use a short, thin
blade screwdriver for best results.
9. Insert the new IC provided into the socket. Press
down firmly to seat the IC properly in the socket.
CAUTION:
Make sure the "U" cut in the new IC is positioned
as it was in the old IC (if appropriate). Check
that the IC is properly seated in the socket
and that all the IC pins are properly aligned
with the connector.
10. Reinstall the display board if it was removed using
the screws set aside in Step 4. Reconnect the
ribbon cable and display cable to the display PC
board. (Note: the ribbon cable is keyed and can
only be installed in one direction. DO NOT
FORCE it.)
11. Reconnect system power. Close the control panel
door and check operation of the system. The
control panel firmware upgrade is now complete.
Installation Instructions
FS-UK
Upgrade Kit for FS-250
Fire Safety
P/N 315-049463-1
Siemens Building Technologies, Inc.
8 Fernwood Road
Florham Park, New Jersey 07932