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Replacing Slide Faders, Switches, and other parts
Slide faders and switches are soldered onto the PC board and should be replaced at the factory if at all possible.
The procedure requires proper tools, and it can be difficult to remove the parts without damaging traces or pads
on the PC board. Also, the switches are very sensitive to temperature and duration during the soldering process
and can be electronically damaged or destroyed when being soldered. If a slide fader, switch, or other part must
be replaced in the field, then extreme care must be taken.
Tools required:
1) Hand held solder sucker (stranded solder wick is not suggested)
2) Temperature controlled soldering iron with pencil tip (soldering guns should not be used)
Procedure:
1) Suck the solder from all holes until the damaged component is entirely free from the PC board. Remove the dam-
aged part.
2) Place the new part onto the PC board. Slide faders and switches (and some other parts) ARE oriented and MUST
be replaced in the correct orientation.
3) Carefully solder the new part to the PC board.
a) Clean the tip of the soldering iron on a wet sponge.
b) Tin the tip of the soldering iron (cover the tip of the soldering iron with a small amount of solder).
c) Set the soldering iron to 734 degrees Fahrenheit (390 degrees celsius).
d) Touch the tip of the 'soldering iron' to the junction of the PC board pad AND the component lead.
e) Immediately touch the 'solder' to the junction of the soldering iron and the PC board pad.
f) Flow only enough solder to fill the hole. Immediately remove the soldering iron from the part.
g) Do not keep the soldering iron on the part for more than 2 seconds.
h) Clean the solder rosin from the PC board if required. (See Note #1 below)
Note #1: Arrakis uses aqueous core (water soluble) solder that requires the solder joint to be cleaned by water
after soldering. Aqueous core solder is acidic and must be cleaned so as to not damage the PC board over time.
Rosin core solder is not water soluble and requires a flux remover if it is to be cleaned. The rosin residue however
does not have to be removed for rosin core solder.
Warranty: Arrakis can only warranty service performed at the factory. All field service is performed at the
customer's risk.
S E R V I C E & M A I N T E N A N C E
6.3
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