Nokia 7373 User manual

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RM-209
Transceiver characteristics:
Band: Tri-band phone for GSM 900/1800/1900MHz
Camera: 1,3 Mega pixel camera with full screen landscape camera
mode
Display: QVGA display with 262.144 colors,
resolution 320 x 240 pixel
Bluetooth
FM radio
Audio: 2 IHF speaker for 3D-stereo sound effects
Connector: Pop Port™ connector
SERVICE MANUAL
Level 1&2
Environmental characteristics:
• Lead-free soldered
Transceiver with BL-4b Li-Ion battery pack
Talk time Standby Note
up to 4h up to 11days
Depends on network
parameters

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CHANGE HISTORY
Status Version No. Date Comments
Draft 0.1 26.Jul.2006 Initial draft
Approved 1.0 09.Okt.2006 Approval
Page
TABLE OF CONTENTS
INTRODUCTION 3
GENERAL REPAIR INFORMATION 4
PATHFINDER FOR WORKSHOP STAFF 5
EXPLODED VIEW AND COMPONENT DISPOSAL 6
SPARE PARTS OVERVIEW 7
LEVEL 2 SOLDER COMPONENTS 8
SPARE PARTS LIST 9
SERVICE TOOLS 10
SW-UPDATE 12
DISASSEMBLY INSTRUCTION (UPPER BLOCK) 13
DISASSEMBLY INSTRUCTION (LOWER BLOCK) 16
LEGEND FOR QUICK TROUBLE SHOOTER 21
QUICK TROUBLE SHOOTER PART 1 22
QUICK TROUBLE SHOOTER PART 2 23
QUICK TROUBLE SHOOTER PART 3 24
GONOGO TEST 25
BATTERY TEST 26
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The purpose of this document is to help NOKIA service levels 1 and 2 workshop technicians to carry out service to NOKIA
products. This Service Manual is to be used only by authorized NOKIA service suppliers, and the content of it is confidential.
Please note that NOKIA provides also other guidance documents (e.g. Service Bulletins) for service suppliers, 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, please notify NOKIA using the address below:
mailto:c[email protected]
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:
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.THE HANDPORTABLE TELEPHONE MUST NOT BE OPERATED
IN AREAS LIKELY TO CONTAIN POTENTIALLY EXPLOSIVE ATMOSPHERES EG PETROL STATIONS (SERVICE STATIONS), BLASTING
AREAS ETC.
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. Use only approved components as specified in the parts list.
4. Ensure all components, modules screws and insulators are correctly re–fitted after servicing and alignment.
5. Ensure all cables and wires are repositioned correctly.
1.
2.
3.
Electrostatic discharge can easily damage the sensitive components of electronic products.
Therefore every Service Supplier has to take care of all precautions, which are mentioned in the
service level related “Service Partner Requirements”, available on NOKIA Online. Also see ESD
Protection Requirements in this Service Manual.
INTRODUCTION1.

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In this section the technician will get some general hints how to carry out repairs:
To familiarize oneself with NOKIA product read the tutorials or user guide on www.nokia.com -->Support--> Phones, by
selecting the Phone Model.
Before starting the repair you must take care of ESD precautions like being in your ESD Protected Area and connecting your
wristband.
Use gloves to avoid corrosion and ngerprints.
Protect windows and displays with a lm to avoid dust and scratches.
When cleaning the LCD Module any lint-free cloth can be used (e.g. Micro-Fibre cloth).
When cleaning the pads you have to use a soft cloth/ESD brush and Isopropanol. It is not allowed to use a glass ber pencil
because it scratches the surface and will lead later on to corrosion.
Mechanical parts (except shielding lids and bent parts), which didn’t repair the failure, can be reused, if they are not
soldered.
When removing the shielding lids make sure to replace them with new ones, otherwise the high-frequency leakage can
have an inuence on the device.
Always use original NOKIA spare parts.
Check the soldering joints of the parts, which are concerned regarding the indicated error (e.g. soldered connectors or
switches) and resolder them if necessary (Level 2 only).
Remove redundant soldering ux after repair.
Meet the torque requirements when assembling the unit (see also the document “torques for transceiver assembly” on
NOKIA Partner Web Site/NOKIA Online).
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.
A SIM card is needed for all GoNoGo tests.
When doing the fault log entries, always note the Item code, which caused the malfunction. Also, ll in the appropriate
part code from the assembly, if needed.
Please be aware that some malfunctions could be software related and solved by an update.
There are several documents available on NOL, which have to be followed:
First, take care for the latest content pages of Service Bulletins, which are always available for each folder on NOKIA Online.
This is also important to recognize, if existing documents have become invalid.
The service level indicator at the bottom of each document tells the appropriate destination.
Downloads > Support Library >
1. Instructions
2. General Service Bulletins
3. Product related documents
4. Spare Part Service Bulletins
5. Service Tools Service Bulletins
6. Common Software Service Bulletins
etc,…
Use General SB-217 as a reference or overview.
Please also check NOKIA Online (NOL) for latest news and les on a regular basis.
GENERAL REPAIR INFORMATION2.

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In addition to the information in this Service Manual, there are several instructions and information, which have to be
followed. Main documentation database is NOKIA Online with the purpose of serving different multimedia content, like
video clips or interactive tutorials.
It is mandatory to watch for newest technical and organizational information on a daily basis to be updated as required
(see “Latest files in Support Library”). Every new information has to be processed and implemented as soon as possible.
When logged into NOL you can also find needed information in different folder like:
Support Library
Phones
Service Manuals
Service Bulletins
Software
Repair Information
Level 1&2 e-learning (former NOKIA CarePoint) on NOKIA Online
Former NOKIA CarePoint
content, such as
Online Troubleshooting
Product information
Videos – Disassembly/Assembly
•
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•
can be found on
NOKIA Online
NOKIA Online
Care Services
Training
Phone Models
Level 1&2 e-learning courses offer a quick overview of the NOKIA phone and support for how to repair and use the phone:
Overview & Guides
Basic information about the phone,
features and technologies
Disassembly & Assembly
Instructions how to disassemble and
assemble the phone
Troubleshooting
Step-by-step instructions on how to
locate and repair the most common
problems with the phone
To reduce the server traffic it is recommended to download newest version of huge files like videos, Phoenix packages or
Service Manuals only once and distribute it internally for further use.
PATHFINDER FOR WORKSHOP STAFF3.

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Recommendation for the ecologically friendly disposal of components. Colorized components show the different catego-
ries. See corresponding ITEM/CIRCUIT REF in the Spare Parts Service Bulletins on NOL.
EXPLODED VIEW AND COMPONENT DISPOSAL4.

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SPARE PARTS OVERVIEW5.

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LEVEL 2 SOLDER COMPONENTS6.

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NOL is the database where you can find the latest corresponding Service Bulle-
tins (spare parts, SWAP units and service tools).
This will ensure, that you are using up-to-date order codes only.
Therefore Service Bulletins have to be checked from NOL on daily basis.
SPARE PARTS LIST7.

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FLS-4S incl. ACF-8, Driver and User Guide
Dongle and flash device incorporated into one package, developed
specifically for POS use.
ACF-8
Universal Power Supply is used to power FLS-4S.
Travel Charger AC-4
Small and lightweight charger for fast charging of your phone battery.
Internal Battery BL-4b
Inserted under the back cover, this Li-Ion battery provides power in a
lightweight package.
Headset HS-31
The Nokia Fashion Stereo Headset provides a convenient handsfree
facility and the pleasure of listening to your compatible Nokia phone’s
FM radio or MP3 player in stereo.
SS-45
Camera removal tool. Metal side is for disassembly, the plastic side for
assembly.
CA-53
Service Cable to connect the PC with the Pop-Port™ connector
SERVICE TOOLS8.

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RJ-68
Soldering Jig
Lead-free Solder Wire
Mandatory for lead-free products (Level 2 only).
0772040 NMP Standard Toolkit
NOKIA opening tool SRT-6 NOKIA No. 0770431
Tonichi torque driver NOKIA No. 6901525
Hoya micro Fibre cloth MX304
Dastex gloves S, M, XL
Artilux goggles AH166
Wera bit T5 867/4TX 5x50
Wera 867/4 6IP; 50mm (Torx 6 PLUS®)
Wera bit T6 867/4TX 6x50
Wera 867/1 5IP; 25mm (Torx 5 PLUS®)
Wera bit T6 PLUS® 867/4TX 6IP
Facom side cutter 416E
Facom T5 driver SP.14032
Facom T6 driver SP.14033
Facom slot screwdriver AEF. 2x35.E
Wetec tweezers 7abb SA-ESD
Wetec tweezers 22 SA-ESD
Wetec tweezers 13 SA-SMD ESD
Wetec tweezers PSF SA-ESD
Wetec ESD brush E1211
Kaiser Fototechnik airbrush 6315
Wetec dental tool DEM83266/0
RS Components Scissors 323-5732
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SW-UPDATE9.
Flash Concept – (Point of Sales)
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 Online.

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DISASSEMBLY INSTRUCTION (UPPER BLOCK)10.
1. You need the following tools. 2. Always protect all windows with a plastic film.
3. Open the E-COVER and remove the battery, if it is inserted. 4. Turn the UPPER BLOCK to 90° from the LOWER BLOCK. Start
opening the A-COVER ASSY at the round side with the SRT-6.
5. Slide the SRT-6 around the covers and keep the gap open.
Unlock the retaining clips separately.
6. Go ahead near the SWIVEL area.
7. This is the last clip to be unlocked. 8. Now, separate A-COVER and B-COVER.

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9. Also, protect the inner side of the window with a plastic film. 10. Carefully unlock the BOARD TO BOARD CONNECTOR.
11. Unlock four clips at the B-COVER, which hold the UI-SHIELD
into the B-COVER.
12. Do not damage the LCD connector when opening.
13. Open the four clips which hold the LCD into the UI-SHIELD.
Do not bend the clips too much to keep the part reusable for
assembly.
14. Lift out the LCD.
15. To avoid dust and scratches, protect the LCD with a plastic
film.
16. Open the two Torx Plus® size 6 screws in the following order.
For assembly use the reverse order and apply a torque of 25
Ncm +/- 2Ncm. Always use new screws!

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17. For Assembly only:
Pay attention to the right length of the COAX CABLE and place
the marking at the edge of the SCREWING PLATE.
18. Remove the SCREWING PLATE.
19. Separate the UPPER BLOCK from the LOWER BLOCK.

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DISASSEMBLY INSTRUCTION (LOWER BLOCK)11.
1. Always protect all windows with a plastic film. 2. Remove the E-COVER.
3. If you need to change the KEYMAT, it is also possible at a
closed LOWER BLOCK. Remove the KEYMAT starting exactly from
the point shown.
4. For assembly only:
When assembling, start placing the KEYMAT at button “0” and
move forward to the upper side.
5. For assembly only:
Start placing the KEYMAT at the marked positions.
6. For assembly only:
Be sure to have all clips locked properly.
7. Open the two Torx Plus® size 6 screw in the following order.
For assembly use the reverse order and apply a torque of 25
Ncm +/- 2Ncm.
8. Open the middle snaps of the D-COVER, using a slotted screw-
driver.

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9. Use the SRT-6 to open the snaps of the D-COVER ASSY at the
right side. Then ...
10. ... at the top side and ...
11. ... at the left side. 12. Remove the D-COVER.
13. Remove the CAMERA GASKET. 14. Stick the SS-45 in to the camera connector.
15. Press the SS-45 together and remove the CAMERA MODULE.16. For assembly only:
Take care of the right positioning of the CAMERA MODULE.

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17. For assembly only:
Use the opposite side of the SS-45 to lock the CAMERA MODULE
properly.
18. The ANTENNA MODULE has four lockings. Use the dental tool
to open the first lock.
19. Stick the dental tool under the ANTENNA MODULE (The pike
of the dental tool is visible in the marked hole). Now pull the tool
to the shown direction.
20. Do the same as before (the pike is in this case not visible) and
pull in the opposite direction.
21. Now unlock the last snap. 22. Remove the ANTENNA MODULE.
23. Carefully unlock the coax connector with SRT-6. 24. Unsrew the three SWIVEL screws Torx Plus® size 6 in the fol-
lowing order. For assembly use the reverse order and apply a
torque of 25 Ncm +/- 2Ncm. Always use new screws!

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25. Separate the ENGINE MODULE from the C-COVER ASSY. 26. Remove the BLUETOOTH ANTENNA with tweezers.
27. Remove the MICROPHONE with the dental tool. 28. Remove both IHF SPEAKERS with tweezers.
29. Separate the C-COVER ASSY from the UPPER BLOCK. 30. Fit the COAX CABLE to the hole to remove the C-COVER ASSY
completely from the UPPER BLOCK.
31. Remove the PWB KEYMAT ASSY.32. Use a DC PLUG to remove the DC-JACK.

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33. There are six clips, holding the LABEL COVER into the D-
COVER.
34. Unlock the five clips with a slotted screwdriver.
35. Turn around the D-COVER and unlock the last clip.