CONFIDENTIAL
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Customer Care Europe, Middel East & Africa NHM-8 / RH-9 Repairhints
SCCE Training Group Version 2.0 Approved
2003 Nokia Mobile Phones
Date 10-03-2003
© NMP 2003
Checked by: SCCE
Approved by: Training Group
-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 fluxcleaners such as “Kontakt LR” or “Electrolube FLU” in connection with ionized compressed air.
For shield disassembling or any other work on the PCB it is very important to place the PCB into the rework
jig MJS-67 (NMP-code 0770388) to prevent damaging the LEDs – the pads the LEDs are connected with to
the PCB are torn off by applying only little pressure onto the PCB!!!
-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 tighten screws only use a torque screwdriver with a torque adjusted to 28Ncm. Notice tightening order
that is shown in the picture below!
-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!
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