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nokia
7250
NHL-4j
SERVICE MANUAL
Service Level 1&2
Copyright © Nokia Corporation. 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, 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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Introduction
The purpose of this document is to help Nokia service levels 1 and 2 workshop
technicians to carry out service to Nokia 7250. This Service Manual is to be used only by
authorized Nokia service partners, and the content of it is confidential. Please note that
Nokia provides also other guidance documents (e.g. Service Bulletins) for service
partners, follow these regularly and comply with the given instructions.
While every endeavor has been made to ensure the accuracy of this document, some
errors may exist. If you find any errors or if you have further suggestions, Nokia should
be notified. Please keep in mind also that this documentation is continuously being
updated and modified, so watch always out for the newest version.
Warnings and Cautions
Please refer to the phone’s user guide for instructions relating to operation, care and maintenance
including important safety information. Note also the following:
Warnings:
1.
CARE MUST BE TAKEN ON INSTALLATION IN VEHICLES FITTED WITH ELECTRONIC ENGINE
MANAGEMENT SYSTEMS AND ANTI–SKID BRAKING SYSTEMS. UNDER CERTAIN FAULT
CONDITIONS, EMITTED RF ENERGY CAN AFFECT THEIR OPERATION. IF NECESSARY, CONSULT THE
VEHICLE DEALER/MANUFACTURER TO DETERMINE THE IMMUNITY OF VEHICLE ELECTRONIC
SYSTEMS TO RF ENERGY.
2.
THE HANDPORTABLE TELEPHONE MUST NOT BE OPERATED IN AREAS LIKELY TO CONTAIN
POTENTIALLY EXPLOSIVE ATMOSPHERES EG PETROL STATIONS (SERVICE STATIONS), BLASTING
AREAS ETC.
3.
OPERATION OF ANY RADIO TRANSMITTING EQUIPMENT, INCLUDING CELLULAR TELEPHONES, MAY
INTERFERE WITH THE FUNCTIONALITY OF INADEQUATELY PROTECTED MEDICAL DEVICES. CONSULT
A PHYSICIAN OR THE MANUFACTURER OF THE MEDICAL DEVICE IF YOU HAVE ANY QUESTIONS.
OTHER ELECTRONIC EQUIPMENT MAY ALSO BE SUBJECT TO INTERFERENCE.
Cautions:
1. Servicing and alignment must be undertaken by qualified personnel only.
2. Ensure all work is carried out at an anti–static workstation and that an anti–static wrist strap is
worn.
3. Ensure solder, wire, or foreign matter does not enter the telephone as damage may result.
4. Use only approved components as specified in the parts list.
5. Ensure all components, modules screws and insulators are correctly re–fitted after servicing and
alignment. Ensure all cables and wires are repositioned correctly.
6. All PC’s used with NMP Service Software for this produce must be bios and operating system ”Year
2000 Compliant”.
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Table of content
1. EXPLODED VIEW.................................................................................................................................... 4
2. SPARE PARTS LIST................................................................................................................................. 5
3. INFRARED GONOGO TEST .................................................................................................................. 8
4. CAMERA GONOGO TEST...................................................................................................................... 9
5. SW-UPDATE ............................................................................................................................................ 10
6. GENERAL REPAIR INFORMATION ................................................................................................. 11
7. DISASSEMBLY INSTRUCTIONS (SEE ALSO 7210 VIDEO CLIPS) ............................................. 12
8. ASSEMBLY INSTRUCTIONS FOR CAMERA MODULE ............................................................... 15
9. QUICK TROUBLE SHOOTER PART1 ............................................................................................... 16
10. QUICK TROUBLE SHOOTER PART2 ........................................................................................... 17
11. QUICK TROUBLE SHOOTER PART3 ........................................................................................... 18
12. ESD PROTECTION REQUIREMENTS........................................................................................... 19
13. SERVICE NOTES................................................................................................................................ 20
14. GONOGO TESTER............................................................................................................................. 21
15. BATTERY TESTER ............................................................................................................................ 21
Change History
Originator Status Version No. Date Comments
DJk Draft 0.1 17.12.2002 Initial draft
DJk Draft 0.2 22.01.2003 Camera GoNoGo Test implemented
DJk Approved 1.0 24.02.2003 Approval
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1. EXPLODED VIEW
Description: See corresponding ITEM/CIRCUIT REF of the SPL (Spare Parts List)
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2. SPARE PARTS LIST
ITEM/
CIRCUIT REF.
I001 1 9491028 A-COVER ASSY PLUM
I002 1 9790828 KEYMAT LATIN PLUM
I003
I004
I005
I006
I007
I008
I009
I010
I011
I012
I013
I014
I015
I016
I017
I018
I019
I020
I021
I022
I023
I024
I025
I026 1 9491034 B-COVER ASSY PLUM
QTY PART NO PART NAME
1 9517173 DISPLAY SHIELD DMC04171 NHL-4
1 4850291 LCD MOD/JAMES 130X130 COG COLOUR
1 0201920 TK8 UI MODULE
1 9467076 LCD FRAME DMC03935 NHL-4
1 9470283 SPEAKER FOAM TAPE
1 5140251 SPEAKER105+-3DB32R D8.1X2.25 PICO
1 5140263 MIC+BOOT ASSY -42+-3DB D7.7X3MM
6 6290107 SCREW 1.8X7.0 FE T6+ DMD05791 BLK
1 XXXXXXX TB3 RADIO MODULE
1 4858003 CIF CAMERA MODULE, CCP/CCI
1 9481013 CONN SHIELD CIF-J CLE9014-01E
2 5400263 ANTENNA POGO PIN L=8.7MM D=2.1MM
1 9790825 VOLUME KEY DMD07492 NHL-4J
1 9452235 IR WINDOW DMD07490 NHL-4
1 5400243 CONN DC-JACK 3.5MM 3POL SPR 90DEG
1 6800057 VIB.MOTOR ASSY 1.3 VDC 11000 RPM
1 9790826 RELEASE BUTTON DMD07493 NHL-4J
1 9510845 SPRING NHL-4
1 9790821 POWER KEY DMD07491 NHL-4J
1 XXXXXXX SPEAKER HF 69+-2DB8R D16X4.36
1 XXXXXXX C-COVER
1 XXXXXXX TYPE LABEL, note code is for label roll
1 0660281 ANTENNA INT ANTENNA EGSM/PCN/PCS
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SOLDERING COMPONENTS ONLY FOR LEVEL 2
ITEM/
CIRCUIT REF.
S300 1 5209001 SM SW TACT SPST 12V 50MA SIDE KEY
S301 1 5209001 SM SW TACT SPST 12V 50MA SIDE KEY
S302 1 5409235 SM TACT SW TRAV 0.2 4.1X3.55X1.75
F100 1 5119019 SM FUSE F 1.5A 32V 0603
G300 1 4700131 CELL CAPACITOR 0.01MAH 3V3
VARIANT PARTS
ITEM/
CIRCUIT REF.
QTY PART NO PART NAME
QTY PART NO PART NAME
I001 1 9491028 A-COVER ASSY PLUM
I001 1 9491025 A-COVER ASSY BLUE
I002 1 9790828 KEYMAT LATIN PLUM
I002 1 9790827 KEYMAT LATIN BLUE
I002 1 9790870 KEYMAT RUSSIA PLUM
I002 1 9790869 KEYMAT RUSSIA BLUE
I002 1 9790874 KEYMAT ARABIC PLUM
I002 1 9790873 KEYMAT ARABIC BLUE
I002 1 9790876 KEYMAT GREEK PLUM
I002 1 9790875 KEYMAT GREEK BLUE
I002 1 9790878 KEYMAT HEBREW PLUM
I002 1 9790877 KEYMAT HEBREW BLUE
I026 1 9491034 B-COVER ASSY PLUM
I026 1 9491030 B-COVER ASSY BLUE
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SWAP UNITS
QTY PART NO PART NAME
0076602 NHL-4J N7250 SWAP ENGINE
0076603 NHL-4J N7250 SWAP ENGINE RUSSIA
0076604 NHL-4J N7250 SWAP ENGINE ZA
0076605 NHL-4J N7250 SWAP ENGINE POLAND
0076606 NHL-4J N7250 SWAP ENGINE TURKEY
0076607 NHL-4J N7250 SWAP ENGINE FRANCE
0076608 NHL-4J N7250 SWAP ENGINE CZECH
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SERVICE TOOLS
TYPE QTY PART NO PART NAME
0680032 UNIV. POWERSUPPLY ACF-8
ACCESSORY 0273460 BLD-3 BATTERY PACK
0770492 FLA-27 POS FLASH ADAPTER
0770450 BBS-10, PINS FOR FLA-27, 10 PCS/PLASTIC BAG
0730218 XCS-1 SERVICE CABLE
ACCESSORY 0273636 DCV-14 DESK TOP STAND
ACCESSORY 0272169 AC TRAVEL CHARGER ACP-8E (EUR)
ACCESSORY 0272172 AC TRAVEL CHARGER ACP-8X (UK)
ACCESSORY 0273505 HDS-3 STEREO HEADSET
0770431 SRT-6 OPENING TOOL 5510
0770556 SRT-10 CAMERA REMOVAL TOOL
0080541 FLS-4S SALES PACK E&A (inclusive 0680032)
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3. INFRARED GONOGO TEST
You need another infrared device (e.g. 6310i) to do a GoNoGo test. The infrared windows
of the devices must be directed to each other and should have a distance of approximate
15 cm. Make sure that infrared is activated in receiver device.
Warning: Do not point the IR (infrared) beam at anyone’s eye or allow it to interfere
with other IR devices. This device is a Class 1 Laser product.
Test unit Reference unit
Settings on the test unit:
o From Home Menu, select
key. This displays Phonebook entries. If phone and
SIM memory is empty, create one new entry.
o Choose one phonebook entry and select
o
Select
o
Select
o Select
o Sending in progress, please wait
o If sending of business card fails
, make sure again, that infrared
windows are directed to each other and infrared is activated in reference device
Then try again sending.
.
o Test was successful, if you get this message on receiver device
.
You will not get a confirmation on sender device.
o Press
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4. CAMERA GONOGO TEST
Before starting the GoNoGo
test, check that camera window
in B-Cover is clean. If not, clean
the window with cloth.
If camera lens is dirty, do not
use cloth or brush for cleaning,
use compressed air only.
Exchange of Camera Module
does not improve picture
quality!
o From Home Menu, select Menu
o Choose
o
Choose Select
o
Select Standard photo
o
To take a picture, select Capture
Camera Menu
o This Image will be saved to Gallery into the Photos folder automatically.
o Test was successful, if the Image appears on your Display. The camera is ok.
o Select Options
o Select Delete
o
Select OK
o Press
o If the test is failed see Quick Trouble Shooter
for Home Menu
.
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5. SW-UPDATE
To use FLS-4S Flash Dongle you have to follow the user guide inside the sales package.
Please check always for the latest version of flash software, which is available on Nokia
Partner Web Site.
Flash Concept – (Point of Sales)
It is very important to follow this insertion and
removal procedure, otherwise the contact pins of
Flash Adapter will be damaged.
Standard installation for software update.
Insert the Flash Adapter FLA-27 like a battery, start at the
Battery Connector side.
Now, push down the bottom side of the phone, do not
use too much force.
When removing the Flash Adapter, always start from the
bottom side of the unit.
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Take away the unit now.
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6. GENERAL REPAIR INFORMATION
In this section the technician will get some general hints how to carry out repairs:
o Before starting the repair you must take care of ESD precautions like being in your ESD Protected Area and
connecting your wristband.
o Use gloves to avoid corrosion and fingerprints.
o Protect windows and displays with a foil to avoid dust and scratches.
o When cleaning the pads you have to use a soft cloth/ESD brush and isopropanol. It is not allowed to use a
glass fiber pencil because it scratches the surface and will lead later on to corrosion.
o Mechanical parts (ex. shielding lids), which didn’t repair the failure, can be reused, if they are not soldered.
o Use always original Nokia parts or accessories.
o Meet the torque requirements when assembling the unit (see also the document “torques for transceiver
assembly” on Nokia Partner Web Site).
o Always use your own equipment for testing where you are sure that it works. E.g. if the customer
complains about charger function, please test the phone with your own charger to be sure if phone or
charger causes the malfunction.
o When doing the Faultlogger entries, always note the Item code, which caused the malfunction. Also, fill in
the appropriate part code from the assembly, if needed.
o Please be aware that some malfunctions could be software related and solved by an update.
Following General Service Bulletins have to be followed:
SB-055 Common notice for good ventilation
SB-089: Don’t try to repair prototypes (indicated on Type Label).
SB-107: Be sure that you have minimum hardware requirements in place.
SB-115: Handling of liquid damages.
SB-121: Return the defective part, if one of your service tools causes malfunction.
SB-122: Soldering with manual hot air gun is totally forbidden because of the very sensitive
µBGA components and µVia technology.
SB-124 Service Policy for packaging serviced products
SB-131: Check these guidelines when refurbishing products.
SB-132: You can use a Golden Phone for inspecting your measuring equipment.
Please check Nokia Partner Web Site (PWS) for latest news and files on a regular basis.
This legend is valid for all parts of the Quick Trouble Shooter
Follow the steps until the problem is solved. If this doesn’t help, you are not authorized to go forward.
Only underlined components ( e.g. I007
Follow the arrows step by step
Pads or contacts: Check optical and
mechanical condition as well as
corrosion. Clean if necessary.
) can be changed.
Check optical and mechanical
condition of contacts as well as
corrosion. Clean with ESD brush only, if
necessary.
Measure component for electrical
functionality and change, if needed.
No more actions possible, send product
to the appropriate service partner with
higher service level.
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7. DISASSEMBLY INSTRUCTIONS (SEE ALSO 7210 VIDEO CLIPS)
Push the Release Button to the left before pulling up the
B-Cover.
Unlock the top guidance to remove the A-Cover.
Unscrew the six TORX PLUS® size 6 screws, using the
order shown. For assembly, the reverse order and a
torque of 22 Ncm have to be used.
The Speaker is attached with double-sided adhesive Foam
Tape. Always use a new tape when mounting the Speaker.
Take the modules from C-Cover and unplug the display
connector by pulling the modules apart carefully.
Do not damage the spring contacts, when removing the
Microphone.
Open the snaps with SRT-6 on both sides of the Display
Shield.
The Display Shield is attached with hooks at its bottom
side.
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Take a clean cloth and press the LCD from the LCD Frame. Bend the frame a bit, shift the UI Module to the right and
then pull it up.
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Remove UI-Module.
Remove the Vibra Motor with the rubber and pull it from
its guidance.
To remove the DC Jack, place tweezers between the
spring contacts and under the Jack. You’ll need to use
additional force to pull the Jack upwards.
Volume Key and the Infrared Window can be easily
removed.
The Power Key has to be unlocked on the lower side first.
Unlock Antenna on both sides with SRT-6.
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Antenna Pogo Pins can be removed by pushing with Torx
driver through the C-Cover.
If there is a need to change the Release Button, also
SRT-6 can be used.
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Remove Connector Shield when cleaning contacts or
changing Camera Module.
Remove Camera Module carefully. Take care that Camera
marking shows to right side when assembling.
Camera Module is attached with four snaps into its
guidance. Place SRT-10 as shown in the picture and
unlock the snaps on both sides. Note releasing order.
Do not touch contacts and camera lens. Use always
SRT-10 for assembly and disassembly.
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8. ASSEMBLY INSTRUCTIONS FOR CAMERA MODULE
Shift the SRT-10 into the camera groove.
Take the Camera Module carefully and note the marking.
Place Camera Module into its guidance. It is very
important to take correct position of the Camera Module
to avoid damaging of this device.
Put the Connector Shield on the camera guidance and
press it down.
Use SRT-10 to lock Camera Module into its guidance.
Note locking order.
Check, that Camera Module is clean. If it is necessary to
clean the camera lens, use compressed air for this
procedure only.
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9. QUICK TROUBLE SHOOTER PART1
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10. QUICK TROUBLE SHOOTER PART2
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11. QUICK TROUBLE SHOOTER PART3
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12. ESD PROTECTION REQUIREMENTS
Electrostatic discharge can easily damage the sensitive components of
electronic products. Therefore every Service Partner has to take care of
at least some precautions like ESD restricted area, floor, table, covering,
chair(s), shoes or arm wrist.
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
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13. SERVICE NOTES
We recommend using Service Notes when shipping phones to other Service Partners. It
prevents the product from scratches, it is ESD-neutral and has the possibility to give
valuable feedback of the fault symptom through a structured form.
Please refer to the document Service Notes for faulty NMP transceiver on Partner Web
Site to get further information.
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14. GONOGO TESTER
The will’tek GoNoGo Tester has to be used
to carry out the final test after your
service action to guarantee the
functionality of the phone.
Please refer to the actual information
in the Nokia Care Point Extranet within
the Partner Web Site.
15. BATTERY TESTER
The Astratec battery tester lets
you test the capacity of Nokia
batteries.
Please refer to the actual
information in the Nokia
Care Point Extranet within
the Partner Web Site.
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