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nokia
C
P
ONNECTING
EOPLE
Nokia Mobile Phones Customer Care EMEA
Technical Services, Repair Concepts
5. GENERAL REPAIR INFORMATION
In this section the technician will get some general hints how to carry out repairs:
o Before starting the repair you must take care of ESD precautions like being in your ESD Protected Area and
connecting your wristband.
o Use gloves to avoid corrosion and fingerprints.
o Protect windows and displays with a foil to avoid dust and scratches.
o When cleaning the pads you have to use a soft cloth/ESD brush 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 Mechanical parts (ex. shielding lids), which didn't repair the failure, can be reused, if they are not soldered.
o Use always original Nokia parts or accessories.
o Meet the torque requirements when assembling the unit (see also the document "torques for transceiver
assembly" on Nokia Partner Web Site).
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 When doing the Faultlogger entries, always note the Item code, which caused the malfunction. Also, fill in the
appropriate part code from the assembly, if needed.
Please be aware that some malfunctions could be software related and solved by an update.
o
Following General Service Bulletins have to be followed:
SB-055
Common notice for good ventilation
SB-089:
Do not try to repair prototypes (indicated on Type Label).
SB-107:
Be sure that you have minimum hardware requirements in place.
SB-115:
Handling of liquid damages.
SB-121:
Return the defective part, if one of your service tools causes malfunction.
Soldering with manual hot air gun is totally forbidden because of the very sensitive µBGA
SB-122:
components and µVia technology.
SB-124
Service Policy for packaging serviced products
SB-131:
Check these guidelines when refurbishing products.
You can use a Golden Phone for inspecting your measuring equipment.
SB-132:
Please check Nokia Partner Web Site (PWS) for latest news and files on a regular basis.
This legend is valid for all parts of the Quick Trouble Shooter
Follow the steps until the problem is solved. If this does not help, you are not authorized to go forward.
Only underlined components ( e.g. I007) can be changed.
Follow the arrows step by step
Pads or contacts: Check optical and
mechanical condition as well as
corrosion. Clean if necessary.
Measure component for electrical
functionality and change, if needed.
No more actions possible, send product
to the appropriate service partner with
higher service level.
Service Manual 5100 Level 1&2
PAGE 10 (20)
Confidential
Check optical and mechanical
condition of contacts as well as
corrosion. Clean with ESD brush only, if
necessary.
Copyright 2002-2003 © Nokia Corporation
Approved 1.0
SQX 00591-en DJk
10.02.2003
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