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4.
Remove the top two front panel screws.
5.
Lift the top cover straight up approximately five inches until you can access
the fan power cords.
CAUTION
6.
Disconnect the two fan power cords from connectors J8 and J13 on the main
board.
7.
Lift the top cover out of the way.
8.
Perform the desired maintenance procedure. See Firmware Upgrade
Installation or DVI Output Card Installation in this chapter.
9.
Reconnect the two fan power cords to connectors J8 and J13 on the main
board. It does not matter which fan is connected to which connector.
10.
Replace the top cover on the ISS.
11.
Fasten it with the screws that were removed in step 3 and step 4.
12.
Rack mount the switcher if desired and reconnect all cables.
Firmware Upgrade Installation
In some cases the ISS's firmware may require replacement with an updated
version. There are nine user-replaceable firmware chips, U1, U2, and U6 on the
front panel circuit board and U98, U99, U100, U101, U102, and U103 on the
main circuit board. The U-numbers are printed on the circuit boards. We
recommend that you send the unit in to Extron for service and updates.
• Chip set U1 and U2 are replaced as a pair
• Chip U6 is replaced alone
• Chip set U98, U99, U100, and U101 are replaced as a set
• Chip set U102 and U103 are replaced as a pair
CAUTION
Replace firmware in the ISS as follows:
1.
Open the switcher. See Opening and Closing the
Switcher on page 7-2.
2.
Locate the firmware chip(s) to be replaced on the
main or front panel circuit board (figure 7-1).
3.
After you are electrically grounded, use a DIP chip
puller to grasp the IC chip(s) and pull it (or them)
out of the socket.
4.
Align the slots of the new firmware chip(s) with the
angled corners of the socket in the same orientation
as the old chip(s). Gently, but firmly, press the
chip(s) into place in the socket.
Integration Seamless Switcher • Maintenance and Modifications
Do not touch any switches or other electronic components inside the ISS.
Doing so could damage the switcher. 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.
Changes to firmware must be performed by authorized service personnel
only. Some ISS firmware updates must be performed at the Extron
factory.
To prevent electric shock, always unplug the ISS from the AC power
source before opening the enclosure.
U102
Align Notches
7-3
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