Nokia 6260 Repair Hints page 5

Customer Care / Service & Support Readiness
Competence Transfer Team
Copyright © 2005 Nokia
- Work precautions
Whenever working with chemicals (e.g. flux or alcohol), always wear safety glasses and gloves! Furthermore,
always check corresponding material safety data sheets and check for restrictions given by your home
country legislation!
- PWB handling & cleaning
To avoid damages of PWB and/or components through electrostatic discharging, handle the module in
ESD protected areas only (as shown on next page). When handling PWBs outside an ESD-bag always wear
ESD-wristbands, which must be connected to earth bonding point, and gloves to avoid corrosion and
fingerprints. Damage by electrostatic discharge often leads to a module not failing directly but after a short
period of time!
For cleaning use only appropriate materials; do not use scratching or rubbing tools. Useful tools for cleaning
are flux cleaners such as "Kontakt LR" or "Electrolube FLU" in connection with ionized compressed air (See
also General SB 163).
For any other rework on the PWB always place the PWB into the rework jig RJ-33 to prevent damaging e.g.
connectors.
- Shieldings, screw torques
To avoid RF-problems it is not allowed to reuse any shielding that once has been removed from shielding
frame. Always use new shieldings after successful repair!
Open the screws in the order that is shown in the pictures below. To tighten screws use reverse order and a
torque T6 plus screwdriver adjusted to 20Ncm! For the two T6 plus screws under function keymat there is no
special screwing order, but the screwing torque has to be 15Ncm.
- Realign after repair
Characteristics of replacement parts may vary.
To prevent additional faults after repair (e.g. low standby time, losing network etc.) it is necessary to retune
phone values after repair; but never try to cover up a fault by justing the phone settings!
- Fault report in fault log (Phoenix)
It is very important to report all repaired failures in fault log after finishing the complete phone repair.
The report content should only contain the self-observed fault symptom, except "no fault found".
In this case the report content should contain the symptom code that is given by the customer,
e.g "Does not switch on"(2101) and the fault code"no fault found"(470).
If the symptom code from the customer is not the same as the observed symptom, use always the self-
observed symptom code.
Edited by:
TBE
Disassembling (1-6) and assembling (6-1) order
Checked by:
SCCE
CONFIDENTIAL
03.02.2005
5 (21)
Repair Hints
Version 1.0 Approved
6260 / RM-25
Approved by:
MKO/PRZ