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Nokia Mobile Phones Customer Care E&A
Technical Services, Repair Concepts
5. TROUBLESHOOTING
In this section you will get some general hints how to carry out repairs:
o When cleaning the pads you have to use a soft cloth and isopropanol. It is not
allowed to use a glass fiber pencil because it scratches the surface and will lead
later on to corrosion.
o Soldering with hot air gun is totally forbidden because of the very sensitive µBGA
components and µVia technology.
o Mechanical parts, which didn't repair the failure, can be reused, if they are not
soldered.
o Use always original Nokia parts or accessories.
o Don't' try to repair liquid damages.
o Meet the torque requirements when assembling the unit.
o Always use your own equipment for testing where you are sure that it works. E.g if
the customer complains about charger function, please test the phone with your
own charger to be sure if phone or charger causes the malfunction.
o The top side of a module is the side which appears first, when the product is
opened.
o Please check Partner Websites (PWS) for latest news on a regular basis
Start/End
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Service Manual 5510 Level 2
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PAGE 12 (34)
Confidential
Action
Copyright 2001 © Nokia Mobile Phones
Approved 1.0
SQX 00306-en MWy
20.11.2001
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