Extron electronics USP 405 User Manual page 57

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Firmware Upgrade Installation
www.camboard.de
CAMBOARD Electronics
In some cases the USP 405's firmware may require replacement with an updated
version. There are four user-replaceable firmware chips: U60 — the main
microcontroller, U24, U67 and U68. Both U67 and U68 are replaced as a pair.
The numbers are printed on the circuit board. We recommend that you send the
unit in to Extron for service and updates.
Changes to firmware must be performed by authorized service personnel
CAUTION
only. Some USP 405 firmware updates must be performed at the Extron
factory.
Follow these steps to replace firmware in the USP 405:
Disconnect the AC power cord from the USP 405 to remove power from the
1.
unit.
To prevent electric shock, always unplug the USP 405 from the AC
power source before opening the enclosure.
Remove the USP 405 from the rack or furniture.
2.
3. Remove the cover of the USP (the top half of the enclosure) by removing the
screws, then lifting the cover straight up.
Remove (13)
screws from
top and sides.
Lift cover
straight up.
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F R
Removing the USP 405 cover
Do not touch any switches or other electronic components inside the
CAUTION
USP 405. Doing so could damage the unit. Electrostatic discharge
(ESD) can damage IC chips even though you cannot feel it. You must be
electrically grounded before proceeding with firmware replacement. A
grounding wrist strap is recommended.
4. Locate the firmware chip(s) to be replaced on the circuit board, as shown in
the following picture.
Tel. 07131 911201
Fax 07131 911203
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ce-info@camboard.de
USP 405 • Appendix
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