Appendix B • Reference
Extron • System 4
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Switcher Series • User’s Manual
Upgrading Main Controller Board Software and Battery Replacement
________ This procedure requires removing both AC power as well as the battery backup.
If your System 4
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software is version 1.3 or greater, it may not have a backup
battery. For earlier versions with a battery backup, all programs stored in the
System 4
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will be lost.
1. With the System 4
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cover removed and AC power disconnected, unplug the red/
black backup battery cable at the Main Controller board. If there is no backup
battery, please disregard this step.
2. Be sure you are electrically grounded! Use the PLCC IC puller to remove the
old Software chip. Squeeze the tool to align the hooks with the slots provided in
opposite corners of chip socket U8. Insert the hooks, squeeze gently and pull the
IC straight out of the socket. Set the chip aside.
3. Take the new software chip and note the location of the angled corner. Orient
this to match the angled corner of the socket U8 and carefully press it into place.
4. For systems with a backup battery, please reconnect the red/black cable to the
Main Controller board.
Figure B-10. System 4
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Main Controller Board
_______ The new software version does not require a backup battery.
5. Reinstall the cover.
6. Connect the AC power cord and apply power to the System 4
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.
________ System 4
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Lithium Backup Battery • Danger of explosion if battery is
incorrectly replaced. Replace only with the same or equivalent type
recommended by the manufacturer. Dispose of used batteries according to
the manufacturer’s instructions.
Exter
nal Batter
y
l
l
XI
B-7
