Extron Electronics DXP Series - Manual (Page 56)

6-5 Digital XPoint Matrix Switchers • Maintenance and Modifications
6. 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 . Continue to hold the Enter button until the power up sequence is
completed (all front panel buttons cycle on and off from left to right lit
green, right to left lit red, and left to right lit amber).
d . Release the Enter button.
7 . Ensure that the switcher is working properly.
8. If the switcher was removed from a rack, remove its power cord, reattach the
switcher to the rack, and reconnect the power cord.
9 . Reconnect the input and output cables.
Replacing the AC fuse
The AC fuse on the power supply board is a user-replaceable component. Replace
the AC fuse as follows:
1. Follow the instructions in “Opening the switcher” on page 6-2 to gain access
to the interior of the switcher.
2. Locate the fuse on the power supply board (figure 6-2), and remove it from its
retaining clips.
3. If test equipment is available, you can check the fuse.
4. Place a new 2.5 A/250V fast-blow fuse in the retaining clips.
5. Reinstall the switcher’s front panel and cover. See “Closing the switcher” on
page 6-2.
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 cover.
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.