Replacing The Ac Fuse; Setting The Front Panel Jumper - Extron electronics Matrix 50 Series User Manual

Reference Information, cont'd
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14.

Replacing the AC fuse

The AC fuse on the power supply board is a user-replaceable component of the
Matrix 50 Series switchers. To replace the AC fuse, do the following:
1.
2.
3.
4.
5.
6.
7.
8.

Setting the front panel jumper

If the front panel jumpers are set incorrectly (for example, if the matrix
configuration was changed and the jumpers were not updated), when the switcher
is powered up, it locks up and will not operate. If the switcher is connected to a PC
or control system, it reports Invalid Jumpers
setting of the jumper as follows:
1.
2.
3.
B-10 Matrix 50 Series Switchers • Reference Information
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 switcher on page B-2 to remove the top
cover.
Locate the fuse on the power supply board (figure B-7), 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.
Follow the instructions in Opening the switcher on page B-2 to gain access to
the interior of your switcher, including the instructions to remove the front
panel.
Locate the front panel jumper (figure B-7).
Install the jumpers as appropriate to your Matrix 50 model (figure B-9).
via the RS-232/422 link. Check the