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Customer Care Europe, Middle East & Africa NHL-4u/NHL4/NHL-4j Repairhints
SCCE Training Group 6610/7210/7250 Version 3.0
To assemble the phone, use the reverse order with a Torx T6 Plus screwdriver and torque of 17Ncm
for NHL-4/4u and
torque of 22Ncm
for NHL-4j.
2003 Nokia Mobile Phones
Date 21/05/2003
© NMP 2003
Checked by:
SCCE Training Group
Approved by:
CC Europe, Middle East & Africa
-PCB handling & cleaning
To avoid damages of PCB and/ or components through electrostatic discharging, handle the module in
ESD-suitable cases only. When handling PCBs outside an ESD-bag always wear ESD-bracelets, which must be connected
to earth bonding point. Damage by electrostatic discharge often leads to a module not failing directly but in 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.
-Shieldings, screw torques
To avoid RF-problems it is not allowed to reuse any shielding that once has been removed from PCB.
Always use new shieldings after successful repair!
To disassemble the phone, use a T6 screwdriver. Unscrew the 6 screws in the order shown in the picture below.
Disassembling (1-6) and assembling (6-1) order
-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 found 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 from the customer (e.g 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.
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