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Reference Information, cont'd
11.
12.
13.
14.
Replacing the AC fuse (CrossPoint Plus 84, 88, 124, and 128
only)
The AC fuse on the power supply board is a user-replaceable component of the
CrossPoint Plus 84, 88, 124, and 128. To replace the AC fuse, do the following:
1.
2.
3.
4.
5.
6.
7.
8.
Button Labels
Figure 49 provides blanks of a 16-button strip of button labels. Feel free to
photocopy them or cut them out of the manual, write button information in each
button area as desired, and put them in the switcher's label window. For 8-button
strips and 12-button strips, use scissors to trim the blank to the appropriate length.
B-6
CrossPoint Plus Matrix Switchers • Reference Information
Reinitialize the switcher to recognize the new IC as follows:
a.
Connect the power cord to the AC power source.
b.
Press and hold the Enter button while you connect the power cord to the
switcher.
c.
Observe that the Input, Output, Preset, View, and Esc LEDs all flash.
d.
Release the Enter button.
Ensure that the switcher is working properly.
If the switcher was removed from a rack, remove its power cord, reattach the
switcher to the rack, and reconnect the power cord.
Reconnect the input and output cables.
Follow the instructions in "Opening the CrossPoint Plus 84, 88, 124, and 128"
on page B-2 to remove the top cover.
Locate the fuse on the power supply board (see figure 45), and remove it from
its retaining clips.
If test equipment is available, you can check the fuse.
Place a new 2A/250V fast-blow fuse in the retaining clips.
Reinstall the switcher's cover. See "Closing the switcher" on page B-3.
If you choose to check the switcher for proper operation before putting the
cover back on, ensure that tools and hands are outside the switcher, and
then connect the power cord to the unit and to an AC source. The
switcher should power up normally. Unplug the AC power cord, and
reinstall the switcher.
Attach the power cord to the switcher and to the AC power source. Make
sure the switcher is working properly.
If the switcher was removed from a rack, remove its power cord, reattach the
switcher to the rack, and reconnect the power cord.
Reconnect the input and output cables.
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