Nokia 3650, 3660 Service Manual
Customer Care Europe, Middel East & Africa NHL-8 Repairhints
SCCE Training Group Version 2.0 Approved
2003 Nokia Mobile Phones
CONFIDENTIAL
Date 11-08-2003
1 (13)
Repair Hints
Service-Level 3 & 4
3650
© NMP 2003
NHL-8
Checked by: SCCE
Approved by: Training Group
CONFIDENTIAL
2 (13)
Customer Care Europe, Middel East & Africa NHL-8 Repairhints
SCCE Training Group Version 2.0 Approved
2003 Nokia Mobile Phones
Date 11-08-2003
GENERAL
- How to use this document
Put the colored schematics behind this manual.
Now you are able to follow these specifications with graphical layouts and it is easier for you to find the components
and measuring points.
- Component characteristics
Some components contain important data such as tuning values or security data; therefore several steps described are
only feasible if you are able to reflash/ realign the phone and/or rewrite IMEI/SIMlock in certain cases. Please pay
attention to separate notes.
- Broken balls, µBGAs
All replaceable (not underfilled) µBGA components must be renewed after removing. Reflow with uncontrolled hot-air
fan is strictly forbidden! µBGA must only be soldered with NMP approved µBGA rework machines (e.g. Zevac/ OK-Metcal/
Martin) to get durable soldering joints. It is also not recommended only to reflow the old µBGA using a µBGA rework
station! Always remove camera module I012 from PWB before starting any rework!
After removing a µBGA check soldering points; if necessary rework oxidated solderings (broken balls) carefully by
tinplating these areas with few flux and a hot soldering iron. Before placing a new component remove the tin and
clean the PWB; e.g. with help of solder wick and flux cleaner such as “Kontakt LR”.
Use only recommended flux type and an appropriate amount of it – avoid drowning the PWB in flux as this will result in
additional faults!
“rework” done with uncontrolled hot-air PWB drowned in flux oxidized pads
© NMP 2003
Checked by: SCCE
Approved by: Training Group
CONFIDENTIAL
3 (13)
Customer Care Europe, Middel East & Africa NHL-8 Repairhints
SCCE Training Group Version 2.0 Approved
2003 Nokia Mobile Phones
Date 11-08-2003
- 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 ESDwristbands, 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 shield disassembling or any other rework on the PWB always place the PWB into the rework jig MJS-93 (NMP-code
0770524) 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!
To tighten screws only use a torque screwdriver with a torque adjusted to 15Ncm. Notice tightening order that is
shown in the picture below; furthermore always use new screws!
- 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
In this case the report content should contain the symptom code that is given from 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.
contain the self-observed fault symptom, except “no fault found”.
© NMP 2003
Checked by: SCCE
Approved by: Training Group
Customer Care Europe, Middel East & Africa NHL-8 Repairhints
SCCE Training Group Version 2.0 Approved
2003 Nokia Mobile Phones
CONFIDENTIAL
Date 11-08-2003
4 (13)
ESD PROTECTION REQUIREMENTS
Electrostatic discharge can easily damage the sensitive components
of electronic products. Therefore, every Service Partner has to take of
at least some precautions, such as ESD restricted area, floor, table,
covering, chair(s), shoes or wristbands.
For further information refer to the Partner Web Site document
“Service Partner Requirements”
example configuration of an epa-area
source: www.armeka.com
example workbench and testers
source: http://www.armekaengineering.com
example configuration of a workbench
source: www.warmbier.com
© NMP 2003
Checked by: SCCE
Approved by: Training Group
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