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9.
Reinstall the cables that were removed in step 2 and 3. Ensure that the
RS-232/RS-422 ribbon cable is plugged into the proper receptacle for either
RS-232 or RS-422, as appropriate.
10.
Reinstall the switcher's front panel and cover. See Closing the switcher on
page B-3.
11.
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.
12.
Ensure that the switcher is working properly.
13.
If the switcher was removed from a rack, remove its power cord, reattach the
switcher to the rack, and reconnect the power cord.
14.
Reconnect the input and output cables.
Replacing the AC fuse
To replace the AC fuse, do the following:
1.
Follow the instructions in Opening the switcher on page B-2 for removing the
top cover.
2.
Locate the fuse on the power supply board (see figure B-2), and remove the
fuse from its retaining clips.
If test equipment is available, you can check the fuse.
3.
4.
Place a new 2A/250V fast-blow fuse in the retaining clips.
5.
Reinstall the switcher's cover as described in Closing the switcher on page B-3.
6.
Attach the power cord to the switcher and to the AC power source. Make
sure the switcher is working properly.
7.
If the switcher was removed from a rack, remove its power cord, reattach the
switcher to the rack, and reconnect the power cord.
8.
Reconnect the input and output cables.
Button Labels
Eight sets of button labels are provided on the next page. Feel free to cut them out
of the manual, write button information in each button area as desired, and put
them in the switcher's label window.
If you choose to check for proper operation before putting the cover back
on, ensure that tools and hands are outside the switcher and then perform
step 11. After recognizing the new IC, the switcher should power up
normally. Unplug the AC power cord, and reinstall the switcher.
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.
MAV Series Switchers • Reference Information
B-5
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