Ironwood Electronics SG-BGA User Manual - Manual (Page 9)

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S G B . d o c , R e v . R , V P , 1 1 / 5 / 1 0
Tel: (800) 404-0204
www.ironwoodelectronics.com
Required Tools: Scotch™ Magic™
Transparent tape or similar or poster putty –
Henkel™ DUCPTY2 Poster Putty,
Removable/Reusable, Nontoxic or a similar
brand. (For more thorough cleaning
technique use alcohol, De-Ionized (DI)
water, a stiff nylon brush, and clean, dry
shop air.)
The Elastomer can be quickly cleaned of
dust and debris with a piece of transparent
tape approximately 2 inches long. Remove
the complete socket assembly from the
board. Roll tape loosely around a fingertip,
adhesive side out. With finger positioned
parallel to the bottom of the elastomer, roll
the tape over the surface. (The bottom side
of the elastomer can be cleaned without
removing it from the socket base assembly).
After cleaning the bottom side, carefully
remove the elastomer guide and elastomer
from the base and clean the top side with a
fresh piece of tape.
To use the poster putty, you do not have to
remove the elastomer with the guide from
the socket base, simply take the socket off
the PCB to clean the bottom side of the
socket – roll the poster
putty around on the elastomer surface on the
bottom – and on the PCB. To clean the
inside of the socket, it is best if the socket is re-mounted to the PCB so you don’t push the elastomer off the
guide. Depending on how big the socket base is you can either use your fingers or some sort of longer tool
(pencil, or tweezers will work) and attach the poster putty on the end – be careful not to let the sharp point of
the tool stick out as you will damage the elastomer. Roll it around inside the socket or look through a
microscope to better see and collect the debris in the socket.
The Elastomer is assembled to the elastomer guide using a silicone adhesive. DO NOT remove the elastomer
from the guide substrate when cleaning. However, should the elastomer fall out, orientation back into the
elastomer guide is critical. The socket will not function properly if the elastomer orientation is incorrect. See
figure 8 to reinstall the elastomer into the elastomer guide should it fall out.
Caution: the elastomer will absorb liquids and may become deformed if it soaks too much. Do not apply
liquids directly to the elastomer or submerse the elastomer in liquid.