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Approved 1.0
Nokia Mobile Phones Customer Care E&A
SQX 00306-en MWy
Technical Services, Repair Concepts
Confidential
20.11.2001
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
Legend for flow charts
Start/End Point:
Beginning or close of an action, process or workflow
Action:
Activity, part of a process
Decision:
Different possibilities to proceed
Connection Point:
Flow chart continues at different point, e.g. on the next page
Start/End
Point
Action
Decision
Conn.
Point
Service Manual 5510 Level 2
Copyright 2001 © Nokia Mobile Phones
