Eventide ARGUS 3000 - Page 53

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Remove The Old Fuse .!
5. To remove the old fuse, you first have to remove the conformal coating around it. If you have n
toluene, apply a small amount to the area immediately around the points where the fuse is soldered |
to the board. This will soften the conformal coating and make it easier to scrape away.
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6. Using the end of a small slot-head screwdriver, gently scrape away the conformal coating from the j
soldered ends of the fuse. Use just enough pressure to remove the coating.
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CAUTION !
Be careful not to damage any of the traces or pads on the board. *m
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7. Using the small needle nose pliers, grasp the lead at one end of the fiise. Heat the solder joint with
the soldering iron until it melts and the lead can be gently pulled free of the board. Heat the other _
solder joint until it melts and gently pull the fuse free of the board. I
8. Remove the solder left in the two holes using a solder wick. If a solder wick is not available, a
solder sucker can be used. Make sure that no solder fragments are left inside the unit. j
Insert The New Fuse _
9. Take the replacement fuse and trim the leads to the same length as the old fuse. Then take the
needle nose pliers and bend the leads down so that they can enter the holes in the power supply
board.
10. Insert the new fuse (orientation does not matter) into the opening and solder it in place.
11. Gently push the daughter board down into the power supply board as far as it will go. l
12. Position the left side panel and secure it in place with 10 flat-head screws. n
NOTE
Two different length screws are used on the side panel. The short screws go at the ends of the
panel and the longer screws in the middle.
13. Apply power to the unit and verity that the unit passes all of its self tests. If an error results during ; |
the self-tests, or if the unit fails to power on, refer to Section 4 of this manual.
Page 48 Argus Maintenance Manual Part #5006 July, 1993