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Reference Information, cont’d
CrossPoint Matrix Switchers • Reference InformationB-2
Reference Information
Hardware Upgrades
This appendix contains procedures for performing hardware maintenance
procedures such as swapping the RS-232 and RS-422 ports, installing a new
firmware update, and replacing the fuse.
Opening the switcher
Before you can perform any of the hardware upgrade procedures, you must open
the switcher. The interior of the CrossPoint 84, 88, 124, and 188 switchers is
accessed by removing the top cover. The interior of the CrossPoint 168 and 1616 is
accessed by removing the front cover.
Opening the CrossPoint 84, 88, 124, and 128
To open the CrossPoint 84, 88, 124, or 128 switcher, do the following:
1. Disconnect the power cord from the switcher.
2. If the switcher is rack mounted, remove the switcher from the rack and place
it on a clean workspace.
3. Remove the eight screws that secure the switcher’s top cover as shown in
figure B-1.
NOTE: If you are installing
a firmware update, remove
two screws in this location
on the bottom cover also.
Fuse
Video board
Power
supply
Front panel
board
Figure B-1 — Removing the top cover
4. Lift the top cover straight up as shown in figure B-1. Lift the cover evenly to
clear the grooves at the edge of the rear panel.
5. If you are updating the firmware, remove the two screws at the front edge of
the bottom cover, press the two receptacle tabs on the top
cable outward as shown at the left, and pull back gently on
the cable connector to remove it from the receptacle. Lay the
front panel down in front of the switcher.
Ribbon cable
Connector
Self-latching receptacle