Nokia 6610 - Cell Phone 625 KB Service manual

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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
2003 Nokia Mobile Phones Date 21/05/2003
©NMP 2003 Checked by:
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Repair Hints
Service-Level 3 & 4
6610/7210/7250
NHL-4u NHL-4 NHL-4j

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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
2003 Nokia Mobile Phones Date 21/05/2003
©NMP 2003 Checked by:
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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 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 / underfill, 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 solder joints.
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 PCB, e.g. with help of solder wick and flux cleaner such as “Kontakt LR”.
Use only recommended fluxtype and an appropriate amount of it – avoid drowning the PCB in flux as this will result in
additional faults!
Also check underfilled parts for broken underfill material below. In this case carefully evaluate possible repair actions as
the phone probably was exposed to strong mechanical stress.
“rework” done with uncontrolled hot air PCB drowned in flux oxidated solderings

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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
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-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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Customer Care Europe, Middle East & Africa NHL-4u/NHL4/NHL-4j Repairhints
SCCE Training Group 6610/7210/7250 Version 3.0
2003 Nokia Mobile Phones Date 21/05/2003
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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 wristband.
For further information refer to the Partner Web Site document
“Service Partner Requirements”
example of an Electrostatic Protected Area (EPA)
source: www.armeka.com
example of a workbench
source: www.warmbier.com
example workbench and testers
source: http://www.armekaengineering.com

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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
2003 Nokia Mobile Phones Date 21/05/2003
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INTRODUCTION
IMPORTANT:
This document is intended for use by authorized NOKIA service centers only.
The purpose of this document is to provide some further service information for NOKIA 6610/7210/7250 phones.
It contains a lot of collected tips and hints to find faults and repair solutions easily.
It also will give support to inexperienced technicians.
Saving process time and improving the repair quality is the aim of this document.
It is built up based on fault symptoms (listed in "Contents") followed by detailed description for further analysis.
The document is to be used additionally to the service manual and other service information such as Service Bulletins.
For that reason it does not contain any circuit or schematic diagrams.
All measurements are made using following equipment:
Nokia repair SW: Phoenix / version A7 2003.9.7.8
MCU SW / Data Package: 6610 (4.18 / 2.00), 7210 (4.18 / 5.00), 7250 (3.12 / 2.00)
Nokia module jig: MJS – 38
Docking station: JBV-1
Docking station adapter: MJF-13
Digital multimeter: Fluke 73
Oscilloscope: Fluke PM 3380A/B
Spectrum Analyzer: Advantest R3131 with an analog probe
RF-Generator / GSM Tester: Rohde & Schwarz CMU 200
While every endeavour has been made to ensure the accuracy of this document, some errors may exist. If the reader
finds any errors, NOKIA should be notified in writing, using the following procedure:
Please state:
title of the document + issue number/date of publication.
page(s) and/or figure(s) in error.
Please send to: Nokia GmbH
Service & Competence Center Europe
Meesmannstr.103
D-44807 Bochum / Germany
Email:[e-mail]
Copyright © Nokia Mobile Phones.
This material, including documentation and any related computer programs is protected by copyright, controlled by
Nokia Mobile Phones. All rights are reserved. Copying, including reproducing, modifying, storing, adapting or
translating any or all of this material requires the prior written consent of Nokia Mobile Phones. This material also
contains confidential information, which may not be disclosed to others without the prior written consent of Nokia
Mobile Phones.

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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
2003 Nokia Mobile Phones Date 21/05/2003
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Contents
PREFACE General 2
Introduction 4
List of figures 7
Repair information 8
Phone hangs up when sending SMS (O-Code: O110) 8
Phone locks up, or no response (O-Code: 901) 9
Phone is totally dead 10
Phone powers down 11
“Insert SIM card” 12
Flow chart “Insert SIM card” 14
Black display 15
LEDs flickering 16
Missing lines or segments and blizzard 17
One-way communication/ low, poor or no speech 18
No stereo sound from FM Radio 19
Flow chart audio faults 20
Software Application table (O-Codes) 21
Change History 22

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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
2003 Nokia Mobile Phones Date 21/05/2003
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List of figures
Figure 1 RFClk 26MHz 10
Figure 2 32kHz SleepClk 10
Figure 3 VSIM 13
Figure 4 SIMDATA 14
Figure 5 SIMCLK 14

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SCCE Training Group 6610/7210/7250 Version 3.0
2003 Nokia Mobile Phones Date 21/05/2003
©NMP 2003 Checked by:
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Phone hangs up when sending SMS (O-Code: O110)
Pre-check:
Take the phone, insert a SIM card and try to send an SMS through network.
o If the phone hangs up, follow repair instructions:
”Phone hangs up when sending SMS (O-Code: O110)”
Phone hangs up when sending SMS (O-Code: O110)
While sending, reading or handling of SMS the phone locks up; try to flash the phone with the latest SW version.
o If an error message from the flash prommer is shown, follow repair instructions:
“Phone is totally dead”
Note! New CCT reference code table for SW application failures has been implemented. Refer to page 21.

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Customer Care Europe, Middle East & Africa NHL-4u/NHL4/NHL-4j Repairhints
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Phone locks up, reboots or no response (O-Code: O901)
Pre-check:
Take the phone and insert a SIM card.
o If the phone locks up, follow repair instructions:
”Phone locks up, reboots or no resonse (O-Code: O901)”
o If the display light turns off when playing a game, follow repair instructions:
”LEDs flickering”
Phone locks up, reboots or no response (O-Code: O901)
If the phone locks up after a while or does not respond, reboot or restart without asking the PIN code when starting an
application, (e.g. a game or the organizer), try to flash the phone.
o If an error message from the flash prommer is shown, follow repair instructions:
”Phone is totally dead”
Note! New CCT reference code table for SW application failures has been implemented. Refer to page 21.

CONFIDENTIAL 10 (22)
Customer Care Europe, Middle East & Africa NHL-4u/NHL4/NHL-4j Repairhints
SCCE Training Group 6610/7210/7250 Version 3.0
2003 Nokia Mobile Phones Date 21/05/2003
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Phone is totally dead
Pre-check:
Try to turn on the phone.
o If nothing happens, follow repair instructions:
“Phone is totally dead”
o If the phone powers up but shuts down automatically, follow repair instructions:
“Phones powers down”
o If a loose battery causes the symptom “powers down”, follow repair instructions:
“Phone powers down”
Phone is totally dead
If the phone is totally dead, try to flash the phone.
If an error message from the flash prommer is shown e.g.:
o Boot serial line fail
o Phone fail response received
o Vpp voltage level fail
o Data block NAK
o Fiasco general
check VIO = 1.8V DC at C405. If the voltage is not ok, check components in VIO line from Flash D450 to UEM D200 for
shorts or interruptions and change or resolder faulty components.
Check Vcore = 1.8V DC at C403. If the voltage is not ok, check components in Vcore line from UPP D400 to UEM D200 for
shorts or interruptions and change or resolder faulty components.
If both voltages are ok, check general signals,
o RFCLK 26MHz at C420.
o 32kHz SleepClk at J404
Figure 1 RFClk 26MHz Figure 2 32kHz SleepClk
If both signals are ok, probably the D450 Flash is faulty and has to be changed. After changing it is necessary first to
flash the phone and than rebuilt IMEI/ESN and tune the phone.
Note! These signals are only measurable for about 5 – 10 seconds after connecting the phone to power.

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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
2003 Nokia Mobile Phones Date 21/05/2003
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Phone powers down
Pre-check:
Put a battery in the housing and try to turn on phone.
o If the phone is on and shuts down automatically, follow repair instructions:
“Phone powers down”
o If the battery is loose in housing, follow repair instructions:
“Phone powers down”
Phone powers down
Disassemble the phone and put the PWB into the MJS-38 repair jig. Set power supply for the jig to 4V DC and check
following voltages:
PWRONX = 3.8V DC at UEM side of S302. If there is no voltage; check R305, R306 and C310 for shorts or disconnections
and change faulty component; otherwise check voltage at C202 and L261.
If voltage is ok, probably UEM D200 is faulty and has to be changed.
The voltage decreases (0V) while pressing the S302 button. If not, check the resistance with ohm-meter between
ground side and UEM side of S302:
o button pressed = 0 Ohm
o button not pressed > 350k Ohm
If the resistance does not change when pressing the button, change S302.
Also for “phone powers down” it is risky it the phone looses contact to the battery for a couple of milliseconds; the
phone powers off. By placing the battery gasket (NMP Code 9460594) on the C-cover, the battery will be fixed more
tightly to the housing as shown in picture below *. The battery gasket must be installed to all NHL-4u/4/4j phones
brought to service.
To ensure good contact between battery (BLD-3) and phone, the battery pads on the battery must be cleaned with
isopropyl alcohol and a cotton bud each time the phone is brought to service.
For 6610 see SB-012.
For 7210 see SB-018.
For 7250 see SB-009.
Place for battery gasket
Note: Battery gaskets are delivered in sheets. Ordering one pieces means one sheet, which includes 72 pc of gaskets.
*) The phone in the picture is an NHL-4, but the place for the gasket in NHL-4j/4u is exactly the same as in NHL-4.

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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
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Insert SIM card
Pre-check:
Put a SIM card into the phone and turn it on.
o If “Insert SIM card” still appears on display after a few seconds, follow repair instructions:
“Insert SIM card”
Insert SIM card
There are two ways to check the SIM lines. See below:
First way:
Set the repair jig MJS-38 to local mode, the power supply to 4VDC, and the oscilloscope to 500mV/div. Hold the probe on
Pin 1. Now connect the power supply to the jig. For a short moment the flat line jumps up. Repeat this procedure with
pin 2,3 and 6. Do not forget to disconnect the power supply after every measurement.
If one or all four lines do not react when connecting the power supply, continue with fault finding as described in the
second way.
Second way:
Note! This signal is only measureable with digital oscilloscope and a removed SIM card directly after switching on the
phone.
Check VSIM = 3VDC at X386 Pin3.
VSIM Figure 3
Delay: 22ms singel shot activ
If not ok, check R386, C203, C390 and X386 for shorts, disconnetions and mechanical damages, and change or resolder
faulty components if necessary.
If the upper listed components are ok, check resistance of VSIM line = 10 Ohm between C203 and X386 Pin3.
If the resistance is much higher, check R386 if broken and change it if necessary; otherwise change PWB.
If the line is ok, change R388. If the fault persists, change UEM D200.

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SCCE Training Group 6610/7210/7250 Version 3.0
2003 Nokia Mobile Phones Date 21/05/2003
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If VSIM is ok, check following signals with inserted SIM card:
SIMCLK = 3.25MHz at X386 Pin1
SIMRST = 3VDC at X386 Pin2
SIMDATA at X386 Pin6
SIMDATA (example) Figure 4
SIMCLK Figure 5
If any of the signals above is not measureable, change R388. If the fault persists after changing R388, change UEM D200.

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Flowchart “Insert SIM card”
"Insert SIM card"
Check
without SIM
card: VSIM at
X386 pin3.
Check
with SIM card:
SIMCLK at X386 pin1,
SIMDATA at X386 pin6,
SIMRST = 3VDC at X386
pin2
Check
resistance = 10Ohm
between C203 and
X386
pin3.
Change UEM
D200
Change
R388 and check
VSIM.
VSIM ok?
SIM ok
Set phone to local mode and
check with oscilloscope
VSIM, SIMCLK, SIMDATA,
SIMRST and compare with
oscillograms in chapter
"Insert SIM card".
Change
R388 and check
SIMCLK, SIMDATA and
SIMRST again.
Signals ok? nok
ok
ok
ok
ok
nok
nok
ok
ok
nok
If the resistance is 1kOhm or
higher, check R388 if it is broken
and change if necessary;
otherwise change PWB.
nok

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SCCE Training Group 6610/7210/7250 Version 3.0
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Black display
Pre-check:
Turn on the phone.
o If there is nothing to be seen on the display, follow repair instructions:
“Black display”
Black display
Check voltage VIO = 1.8V DC. If not ok, check C207 for shorts and change component if necessary.
Check voltage VFLASH1 = 2.8V DC. If not ok, check C205 for shorts and change component if necessary.
If one or both have the voltages are not ok change UEM.
If both voltages are ok, check X302 connector for shorts, disconnections, mechanical damages, resolder or change the
faulty component. If the connector is ok, change the LCD module I004.

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LEDs flickering
Pre-check:
Turn on the phone.
o If the phones turn on, the LEDs are flickering and than lights turn off. The LEDs do not turn on
again, e.g. when pressing a key, then follow repair instructions:
“LEDs flickering”
LEDs flickering
In this case check if C302 is assembled. If not, reassemble the component.
If the C302 is assembled, check N300 and surrounding components L300, V300, R300 and R307 for disconnections or
shorts; change or resolder faulty components.
If all above described components are ok, probably D200 UEM is faulty.

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Missing lines or segments and blizzard
Pre-check:
Switch the phone on.
o If the phone is switched on and lines or segments are missing or blizzard is appering continuously or
only temporarily. Follow repair instructions:
“Missing lines or segments and blizzard”
Missing lines or segments and blizzard
If one of the faults shown in the pictures below appears on the display, change the color display (LCD module I004)
Missing line missing segments blizzard

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One way communication / low, poor or no speech
Pre-Check:
Try to test all audio functions of the phone, e.g. internal, external audio. Make a call between the faulty phone and the
tester, e.g. CMU.
o If during a test call only a one way communication is possible or low, poor, no speech to be heard
or a high current consuption in connection with no audio on the docking station adapter MJF-13
follow repair instructions:
”One way communication / low, poor or no speech”
One way communication / low, poor or no speech
If one of the above mentioned faults appear connect headset and use the volume side keys S300 and S301 to change
the volume. If the change can be seen on the display but is not audible, check following signals:
Check Vbat at C167. If not ok, check C167 for shorts. Change component if necessary.
If VBAT is ok, check with oscilloscope ENA, CLK, DATA at J152-J154. These signals are only short peaks.
Note! These signals are only measureable when pressing a volume key.
If one of the signals is missing, probably the UPP is not working and has to be changed; or there is an interruption
inside of PWB and this has to be changed.
If the IHF (internal handsfree speaker) is activated (phone call or FM-Radio on) but there is nothing to be heared, check
C164, R161, R162, L151, L152 for shorts or disconnections; resolder or change faulty component.
If the components are ok, check resistance on spring contacts of the I020 IHF speaker. A good value is around 7 ohm. If
the value is much higher, change the C-cover I021. The speaker cannot be changed seperatly.
Also check the spring contacts for dirt or bending and clean the contact if necessary;
or change C-cover if the contacts are bent.
If the IHF speaker way is ok, connect headset to the phone and check external audio.
If there is nothing to be heared or if the signal is poor or low and not changeable, check R164-R167, C157, C158 for
shorts or interruptions; resolder or change faulty components.
If these components are ok, change N150 IHF audio amplifier.

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No sound on one of the headset earpieces
Pre-check:
Turn on the phone, connect the headset and activate the FM radio.
o If no stereo sound is audible, follow repair instructions:
”No sound on one of the headset earpieces”
No sound on one of the headset earpieces
If no stereo sound is audible; expecially no sound on left side; check C162 if not assembled or broken.
In this case reassemble or change C162.
If the fault persists, change N150.

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Only
measurable when
pressing a
volume key
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Flowchart audio faults
Connect the headset and make a
phone call or turn on the FM-Radio
and use volume side keys S300 and
S301 to change the volume.
Check VBat at
C167
Does the
volume change? VBat ok?
Check
R161,R162, C164,
L151,L152 for shorts or
interruptions in IHF
speaker
line.
Audio faults
nOK
Check
ENA,CLK,DATA at
J152-154:
OK
Check
the sound if it
is poor or
low.
Phone okOK
OK
Resolder or
change faulty
components.
nOK
OK
Clean springs,
otherwise
change
C-cover I021.
Resolder or
change faulty
components.
Change IHF
power amplifier
N150.
Check
resistance ~ 7ohm with
ohm meter between both
IHF speaker contact springs.
Also check if the springs
are dirty or bent.
Check
R164-R167,
C157,C158 for shorts
or interruptions in
XEAR line.
nOK
nOK
OK
OK
OK
Change UPP. If
fault persists,
change PWB.
nOK
Check C167 for shorts
and change if
necessary.
nOK