Nokia 5250 RM-684 User manual

Nokia 5250 RM-684
Service Manual Level 1&2
1Confidential．Copyright © 2011 NOKIA．All rights reserved Version 3.0
SERVICE MANUAL
Level 1&2
RM-684
Transceiver characteristics
Band:
Quad band GSM : 850/900/1800/1900
Display:
LCM: 16.7M color support, resolution is 640 x 360
Camera:
Camera: 2.0 megapixel, 10x digital zoom
Operating System:
Symbian V5
Connections:
Wireless: Bluetooth
Connector: Wired: Micro USB
Memory:
Internal Memory: total 150MB ( 59.5MB for end user)
External Memory: Micro SD (up to 16GB)
Talk time
Standby
Up to 7 hours
Up to 420 hours
Note: Talk times are dependant on network
parameter settings.

Nokia 5250 RM-684
Service Manual Level 1&2
2Confidential．Copyright © 2011 NOKIA．All rights reserved Version 3.0
Table of Contents
1. CHANGE HISTORY.................................................................................................................................................................3
2. COPYRIGHT .............................................................................................................................................................................4
3. WARNINGS AND CAUTIONS ........................................................................................................................................... 5
4. ESD PROTECTION.................................................................................................................................................................6
5. CARE AND MAINTENANCE................................................................................................................................................ 7
6. BATTERY INFORMATION..................................................................................................................................................8
7. EXPLODED VIEW................................................................................................................................................................... 9
8. LEVEL 2 SOLDER COMPONENTS list.......................................................................................................................... 10
9. SERVICE DEVICES............................................................................................................................................................... 11
10. SW-UPDATE......................................................................................................................................................................... 12
11. DISASSEMBLY INSTRUCTION ...................................................................................................................................... 13
12. ASSEMBLY INSTRUCTION.............................................................................................................................................. 23
13. SOLDER COMPONENTS................................................................................................................................................... 30

Nokia 5250 RM-684
Service Manual Level 1&2
3Confidential．Copyright © 2011 NOKIA．All rights reserved Version 3.0
1. CHANGE HISTORY
Status
Version No.
Date
Comments
Published
V 3.0
22.2.2011
Add the protective film of the
touch into exploded view
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:
Nokia Care Academy
Mail to: [e-mail]
Please keep in mind also that this documentation is continuously being updated and modified, so
watch always out for the newest version.

Nokia 5250 RM-684
Service Manual Level 1&2
4Confidential．Copyright © 2011 NOKIA．All rights reserved Version 3.0
2. COPYRIGHT
Copyright © 2010 Nokia. All rights reserved.
Reproduction, transfer, distribution or storage of part or all of the contents in this document in any
form without the prior written permission of Nokia is prohibited.
Nokia, Nokia Connecting People, and Nokia X and Y are trademarks or registered trademarks of
Nokia Corporation. Other product and company names mentioned herein may be trademarks or
trade names of their respective owners.
Nokia operates a policy of continuous development. Nokia reserves the right to make changes and
improvements to any of the products described in this document without prior notice.
Under no circumstances shall Nokia be responsible for any loss of data or income or any special,
incidental, consequential or indirect damages howsoever caused.
The contents of this document are provided “as is”. Except as required by applicable law, no
warranties of any kind, either express or implied, including, but not limited to, the implied
warranties of merchantability and fitness for a particular purpose, are made in relation to the
accuracy, reliability or contents of this document. Nokia reserves the right to revise this document
or withdraw it at any time without prior notice.
The availability of particular products may vary by region.
IMPORTANT
This document is intended for use by qualified service personnel only.

Nokia 5250 RM-684
Service Manual Level 1&2
5Confidential．Copyright © 2011 NOKIA．All rights reserved Version 3.0
3. 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:
3.1 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.
3.2 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.

Nokia 5250 RM-684
Service Manual Level 1&2
6Confidential．Copyright © 2011 NOKIA．All rights reserved Version 3.0
4. ESD PROTECTION
Nokia requires that service points have sufficient ESD protection
(against static electricity) when servicing the phone.
Any product of which the covers are removed must be handled with
ESD protection. The SIM card can be replaced without ESD protection
if the product is otherwise ready for use.
To replace the covers ESD protection must be applied.
All electronic parts of the product are susceptible to ESD. Resistors,
too, can be damaged by static electricity discharge.
All ESD sensitive parts must be packed in metalized protective bags
during shipping and handling outside any ESD Protected Area (EPA).
Every repair action involving opening the product or handling the
product components must be done under ESD protection.
ESD protected spare part packages MUST NOT be opened/closed out
of an ESD Protected Area.
For more information and local requirements about ESD protection
and ESD Protected Area, contact your local Nokia After Market
Services representative.

Nokia 5250 RM-684
Service Manual Level 1&2
7Confidential．Copyright © 2011 NOKIA．All rights reserved Version 3.0
5. CARE AND MAINTENANCE
This product is of superior design and craftsmanship and should be treated with care. The
suggestions below will help you to fulfill any warranty obligations and to enjoy this product for
many years.
• Keep the phone and all its parts and accessories out of the reach of small children.
• Keep the phone dry. Precipitation, humidity and all types of liquids or moisture can
contain minerals that will corrode electronic circuits.
• Do not use or store the phone in dusty, dirty areas. Its moving parts can be damaged.
• Do not store the phone in hot areas. High temperatures can shorten the life of electronic
devices, damage batteries, and warp or melt certain plastics.
• Do not store the phone in cold areas. When it warms up (to its normal temperature),
moisture can form inside, which may damage electronic circuit boards.
• Do not drop, knock or shake the phone. Rough handling can break internal circuit boards.
• Do not use harsh chemicals, cleaning solvents, or strong detergents to clean the phone.
• Do not paint the phone. Paint can clog the moving parts and prevent proper operation.
• Use only the supplied or an approved replacement antenna. Unauthorised antennas,
modifications or attachments could damage the phone and may violate regulations
governing radio devices.
All of the above suggestions apply equally to the product, battery, charger or any accessory.

Nokia 5250 RM-684
Service Manual Level 1&2
8Confidential．Copyright © 2011 NOKIA．All rights reserved Version 3.0
6. BATTERY INFORMATION
Note: A new battery’s full performance is achieved only after two or three complete charge and
discharge cycles! The battery can be charged and discharged hundreds of times but it will
eventually wear out.
When the operating time (talk-time and standby time) is noticeably shorter than normal, it is time
to buy a new battery. Use only batteries approved by the phone manufacturer and recharge the
battery only with the chargers approved by the manufacturer.
Unplug the charger when not in use. Do not leave the battery connected to a charger for longer
than a week, since overcharging may shorten its lifetime.
If left unused a fully charged battery will discharge itself over time Temperature extremes can
affect the ability of your battery to charge.
For good operation times with Ni-Cd/NiMh batteries, discharge the battery from time to time by
leaving the product switched on until it turns itself off (or by using the battery discharge facility of
any approved accessory available for the product).
Do not attempt to discharge the battery by any other means Use the battery only for its intended
purpose.
Never use any charger or battery which is damaged.
Do not short-circuit the battery. Accidental short-circuiting can occur when a metallic object (coin,
clip or pen) causes direct connection of the + and - terminals of the battery (metal strips on the
battery) for example when you carry a spare battery in your pocket or purse. Short-circuiting the
terminals may damage the battery or the connecting object.
Leaving the battery in hot or cold places, such as in a closed car in summer or winter conditions,
will reduce the capacity and lifetime of the battery. Always try to keep the battery between 15°C
and 25°C (59°F and 77°F).
A phone with a hot or cold battery may temporarily not work, even when the battery is fully
charged.
Batteries’ performance is particularly limited in temperatures well below freezing.
Do not dispose batteries in a fire! Dispose of batteries according to local regulations (e.g. recycling).
Do not dispose as household waste.

Nokia 5250 RM-684
Service Manual Level 1&2
9Confidential．Copyright © 2011 NOKIA．All rights reserved Version 3.0
7. EXPLODED VIEW

Nokia 5250 RM-684
Service Manual Level 1&2
10 Confidential．Copyright © 2011 NOKIA．All rights reserved Version 3.0
8. LEVEL 2 SOLDER COMPONENTS list
ITEM/
CIRCUIT
REF.
QTY
CODE
SPARE PART DESCRIPTION
LEVEL
V2303
1
8002295
LED_WHITE
2
V2304
1
8002296
LED_GREEN_-40~85℃_1.6*0.8*0.4_19-217/GHC
2
V2302
1
8002294
LED_RED_Top_1.6*0.8*0.4mm
2
X2470
1
8002297
50 Pin connector socket
2
X5040
1
8002300
CONN_BTB_Socket_10PIN_4.7*3.6*1.45mm
2
X2502
1
8002299
CONN_Slide Switch_4PIN_13.2*6.4*4.5mm
2
X2450
1
5469334
CONN_BTB_Socket_10PIN_4.2*4.6*0.9mm
2
X7401
1
6442619
Spring_Antenna_3.7*1.5*2.6_CLN
2
X6000
1
6443094
Spring_BT_3*1.5*1.45_CLN
2
X2500,
X2501, X2503
3
8002298
CONN_Switch Sidekey_5PIN_2.9*3.5*1.35mm
2
F2000
1
5119045
SM FUSE FF 2A32V 0402
2

Nokia 5250 RM-684
Service Manual Level 1&2
11 Confidential．Copyright © 2011 NOKIA．All rights reserved Version 3.0
9. SERVICE DEVICES
CA-101
Data Service Cable
Service Cable to connect the PC
with the Micro USB connector.
SS-88
Camera removal tool
This tool is used for unload the
camera module from socket
RJ-230
Soldering Jig
This tool is used for PWB component
de-soldering and soldering.
Travel Charger AC-3E
Small and lightweight charger for
fast charging of your phone
battery.
Internal Battery BL-4D
Inserted under the back cover, this
Li-Ion battery provides power in a
sales package.
Nokia Standard Toolkit V2
For more information refer to the
Service Bulletin (SB-011) on NOKIA
Online.
Supplier or manufacturer contacts for
tool re-order can be found in
“Recommended service
equipment” document on NOKIA
Online.

Nokia 5250 RM-684
Service Manual Level 1&2
12 Confidential．Copyright © 2011 NOKIA．All rights reserved Version 3.0
10. SW-UPDATE
Flash Concept –(Point of Sales)
Please check always for the latest version of flash software, which is available on NOKIA Online.
For detailed flashing instruction, please refer to Nokia Care Suite Store version user manual.
Note: The service software used for flashing this product is Nokia Care Suite. The correct name for the store
application in Care Suite is “Product Support Tool for Store”

Nokia 5250 RM-684
Service Manual Level 1&2
13 Confidential．Copyright © 2011 NOKIA．All rights reserved Version 3.0
11. DISASSEMBLY INSTRUCTION
1. Nokia 5250 disassembly.
2. You will need the Nokia Standard Toolkit version 2 as
shown and camera removal tool SS-88.
3. First remove the STYLUS.
4. Use the opening notch to release the BATTERY COVER.
5. Remove the BATTERY COVER. If there is a battery
inserted, remove it as well.
6. Unscrew the two TORX+ size 5 screws in order as
shown. Remove them with the tweezers.
1.
2.

Nokia 5250 RM-684
Service Manual Level 1&2
14 Confidential．Copyright © 2011 NOKIA．All rights reserved Version 3.0
7. Unscrew the TORX+ size 5 screw at the side as
shown. Remove it with the tweezers.
8. To remove the BOTTOM DECO, first insert the SS-93
into the gap between the BOTTOM DECO and B-COVER
ASSY as shown.
9. Slide the SS-93 between the BOTTOM DECO and
B-COVER ASSY as shown till encountering an obstacle.
10. Re-insert the SS-93 as shown.
11. Turn over the SS-93 to separate the BOTTOM DECO
and the B-COVER ASSY.
12. Remove the remaining adhesive on A-COVER ASSY.

Nokia 5250 RM-684
Service Manual Level 1&2
15 Confidential．Copyright © 2011 NOKIA．All rights reserved Version 3.0
13. The BOTTOM DECO can now be separated. The
above operations will damage the BOTTOM DECO. Do
not use it again. Discard it.
14. To remove the TOP DECO, first detach the USB cap.
15. And then insert the SS-93 into the gap between the
TOP DECO and B-COVER ASSY as shown.
16. Slide the SS-93 between the TOP DECO and B-COVER
ASSY as shown.
17. Turn over the SS-93 to separate the TOP DECO and
the B-COVER ASSY.
18. Remove the remaining adhesive on A-COVER ASSY.

Nokia 5250 RM-684
Service Manual Level 1&2
16 Confidential．Copyright © 2011 NOKIA．All rights reserved Version 3.0
19. The TOP DECO can now be separated. The above
operations may damage the TOP DECO. Do not use it
again. Discard it.
20. Remove the adhesive on B-COVER ASSY with the
tweezers as shown.
21. Unscrew the four TORX+ size 5 screws in order as
shown. Remove them with the tweezers.
22. Release the two clips above the KEYMAT with the
flat-head screwdriver and then remove the KEYMAT.
23. In order not to damage the surface of B-COVER ASSY
in the following operations, find a protective sponge
for the screwdriver and cover the flat-head screwdriver
with sponge as shown.
24. Release the snap between A-COVER ASSY and
B-COVER ASSY as shown by flat-head screwdriver. Be
careful not to damage the structure of the housings.
1.
2.
3.
4.

Nokia 5250 RM-684
Service Manual Level 1&2
17 Confidential．Copyright © 2011 NOKIA．All rights reserved Version 3.0
25. Insert the flat-head screwdriver into the gap
between A-COVER ASSY and B-COVER ASSY as shown
and then rotate the screwdriver to release the clip
between them as the arrow shown.
26. Insert the flat-head screwdriver into the position as
shown and then turn it to release the clip between
A-COVER ASSY and B-COVER ASSY near it.
27. Insert the flat-head screwdriver into the position as
shown and then turn it to release the clip between
A-COVER ASSY and B-COVER ASSY near it.
28. Insert the flat-head screwdriver into the position as
shown and then turn it to release the clip between
A-COVER ASSY and B-COVER ASSY near it.
29. Lift up the bottom of the A-COVER ASSY. Be careful
not to break the flex of LCM, A-COVER ASSY, and FPC
PROXIMITY!
30. Open the FPC PROXIMITY connector with the SS-93
as shown if it still connects. Be careful not to damage
the connector –or any nearby components and flex!

Nokia 5250 RM-684
Service Manual Level 1&2
18 Confidential．Copyright © 2011 NOKIA．All rights reserved Version 3.0
31. Open the A-COVER ASSY connector with the SS-93 as
shown if it still connects. Be careful not to damage the
connector –or any nearby components and flex!
32. Open the LCM connector with the SS-93 as shown.
Be careful not to damage the connector –or any nearby
components and flex!
33. The upper and lower modules can now be
separated.
34. Release the clip between LCM METAL FRAME and
A-COVER ASSY by inserting the flat-head screwdriver into
the gap near it. Be careful not to damage the structure
of the housings.
35. Continue to release the remaining clips by inserting
the flat-head screwdriver into the gaps as shown
above. Be careful not to damage the structure of the
housings.
36. Lift up the bottom side of the LCM METAL FRAME and
remove it to the direction shown above.

Nokia 5250 RM-684
Service Manual Level 1&2
19 Confidential．Copyright © 2011 NOKIA．All rights reserved Version 3.0
37. Protect the inner side of the lens of A-COVER ASSY
with a protective tape.
38. Protect the LCM with a protective tape.
39. The A-COVER ASSY can now be separated.
40. Lever out the LCM with SS-93 as shown. Be careful
not to bend the LCM.
41. The LCM and LCM METAL FRAME can now be
separated.
42. Lever out the FPC PROXIMITY with the dental tool.
Discard the FPC PROXIMITY. Be careful not to injure
yourself.

Nokia 5250 RM-684
Service Manual Level 1&2
20 Confidential．Copyright © 2011 NOKIA．All rights reserved Version 3.0
43. Remove the RUBBER PROXIMITY with the tweezers.
44. Lever out the EARPIECE on A-COVER ASSY with the
dental tool. Be careful not to injure yourself.
45. Remove the EARPIECE with the tweezers. Discard it.
Do not use it again.
46. Remove also the remains of the mesh of the
EARPIECE from A-COVER ASSY.
47. Release the two clips as shown between IHF
SPEAKER and B-COVER ASSY by inserting the flat-head
screwdriver into the gap near them. Be careful not to
damage the housing structure.
48. Pull the side wall of B-COVER ASSY out with thumbs
and push the PWB up with other fingers as shown. Be
careful not to damage the side switches on PWB.