Nokia NOKIA N97 mini User manual

Nokia N97 mini
RM-553 / RM-555
Service Manual Level 1&2
1 Confidential
 Copyright © 2009 NOKIA  All rights reserved
Version 1.0 ISSUE 1
SERVICE MANUAL
Level 1&2
RM-553 / RM-555
Transceiver characteristics
Band:
RM-555: WCDMA HSDPA 900/1900/2100 + 4-band GSM
RM-553: WCDMA HSDPA 850/1900/2100 + 4-band GSM
Display:
3.2” TFT, up to 16 million colours
nHD 16:9 widescreen aspect ratio, 640x360 pixel
resolution
Camera:
Main camera: 5.0 MPix CMOS, Dual LED Flash, Auto
focus
Secondary camera: 640x480 QVGA
Operating System:
Symbian OS ver. 9.4 Series60 5th Edition (5.0)
Connections:
WLAN IEEE 802.11 b/g with UPnP support, USB 2.0
(micro USB), Bluetooth 2.0 + EDR + A2DP, 3.5mm AV
connector
Talk time Standby
GSM:
Up to 320 mins
WCDMA:
Up to 256 mins
GSM:
Up to 342 hrs
WCDMA:
Up to 315 hrs
Note: Talk times are dependant on network
parameter settings.

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Service Manual Level 1&2
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Table of Contents
1.Change history ...............................................................................................................................................................................3
2.Copyright..........................................................................................................................................................................................4
3.Warnings and cautions...............................................................................................................................................................5
3.1Warnings ................................................................................................................................................................................5
3.2Cautions ..................................................................................................................................................................................5
4.ESD protection................................................................................................................................................................................6
5.Care and maintenance ................................................................................................................................................................7
6.Battery information .....................................................................................................................................................................8
7.Exploded view................................................................................................................................................................................9
8.Service devices .............................................................................................................................................................................10
9.SW-update.....................................................................................................................................................................................11
10.Disassembly instructions.....................................................................................................................................................12
11.Assembly hints ........................................................................................................................................................................19
12.Touch panel recalibration ...................................................................................................................................................21
12.1Recalibration setup...........................................................................................................................................................21
12.2Recalibration procedure .................................................................................................................................................23
12.3Troubleshooting ................................................................................................................................................................25
13.Solder Components ...............................................................................................................................................................26


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RM-553 / RM-555
Service Manual Level 1&2
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 Copyright © 2009 NOKIA  All rights reserved
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1. CHANGE HISTORY
Status Version No. Date Comments
Approved 1.0 31.08.2009 First approved version
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:
CMO Operation & Logistics
Training and Vendor Development
Multimedia Creation & Support
mailto:[e-mail]
Please keep in mind also that this documentation is continuously being updated and modified,
so watch always out for the newest version.

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2. COPYRIGHT
Copyright © 2009 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
tradenames 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.

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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

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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 metallized 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.

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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 fulfil 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.

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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.
Shortcircuiting 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.

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7. EXPLODED VIEW
Only available as
assembly
These parts can not be
reused after removal
Ver. 1.0
A-COVER ASSY
(I0001 - I0002)
EARPIECE ASSY
I0002
LCD AM TFT 360X640
I0003
SCREW M1.2X2,
PANHEAD 2.5X0.6 T+ 4IP
I0004
SCREW M1.4 x 5.8 P3642
I0109
DISPLAY CHASSIS
I0104
SIM TRAY
I0202
READER FPC ASSY
I0206
GPS ANTENNA ASSY
I0209
SCREW M1.4x3.6 TORX+ 4IP
I0211
BATTERY COVER ASSY
I0214
ENGINE CHASSIS
I0107
HEAT SINK ASSY
I0205
HINGE
I0105
A-COVER
I0001
SCREW CAP
I0005
QWERTY PRTD
I0108
MAIN FPC ASSY
I0101
LCD ADHESIVE TAPE
I0102
A-BEZEL GROUND CLIP
I0103
QWERTY FPC ASSY
I0106
LIGHT SWAP PWB
I0201
TYPE LABEL
I0203
CAMERA ASSY
I0204
CELLULAR ANTENNA ASSY
I0208
B-COVER
I0210
SCREW M1.2X2
PANHEAD 2.5X0.6 TORX+ 4IP
I0212
SCREW M1.4x2.5 TORX+ 4IP
I0213
WATER INGRESS LABEL
I9998
AV FPC ASSY
I0207
A1
HINGE ASSEMBLY
(I0101 - I0107)
A2
LIGHT SWAP PACKAGE
(I0201 - I0203)
A3
B-COVER ASSY
(I0210, I9998)
A4

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8. SERVICE DEVICES
FLS-5 Flash Device CA-101 Service Cable
AC-10 Travel Charger
BL-4D Battery
NMP 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.

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9. SW-UPDATE
Flash concept - (Point of Sales)
To use the FLS-5 Flash Dongle, follow the user guide inside the sales package.
Please check always for the latest version of flash software, wich is available on Nokia Online.

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10. DISASSEMBLY INSTRUCTIONS
1) Nokia N97 mini disassembly. 2) You must use the Nokia Standard Toolkit version
2.
3) Use the opening notch to release the BATTERY
COVER.
4) Remove the BATTERY COVER. If there is a battery
inserted, remove it also.
5) Remove the SIM TRAY. 6) Unscrew the four TORX+ size 4 screws in the
order shown. Do not use them again. Discard them.

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7) Slide the phone open. Release the QWERTY PRTD
with the SRT-6 as shown. The QWERTY PRTD cannot
be reused. Discard it.
8) Unscrew the two TORX+ size 4 screws in the order
shown. Discard the screws.
9) To release the B-COVER close the slide and insert
the SRT-6 between the hinge assembly and the B-
COVER. While detaching the B-cover, be careful not
to touch the engine board.
10) First release the clips around the camera button.
11) Then release the clips around the volume key. 12) Carefully slide the phone open. Use the SRT-6 to
release the remaining clips holding the B-COVER.
Remember not to touch the engine board.

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13) Carefully lift up the B-COVER to gain access to
the MAIN FPC and the QWERTY FPC connectors.
14) Open QWERTY FPC and the main FPC connector
from the engine board with the SS-93. While
opening the connectors, be careful not to damage
the connectors - or any nearby components.
15) The B-COVER with the engine board can now be
separated.
16) Open the AV FPC ASSY connector with the SS-93.
17) Lift the AV FPC ASSY carefully up and pull it out. 18) Use the SS-93 to carefully release two clips
holding the engine board.

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19) Remove the engine board as shown. While
removing the engine board, be careful not to
damage the USB connector.
20) Release the GPS ANTENNA ASSEMBLY with the
sharp end of the SS-93. Remove the antenna.
21) Use the SS-93 to detach the CELLULAR ANTENNA
ASSEMBLY and remove it.
22) Disconnect the camera connector from the
engine board with the SS-93. Be careful not to
damage the components nearby! Remove the
camera.
23) Use the SS-93 to open the READER FPC ASSY
connector. While opening the connector, be careful
not to damage the connector! The READER FPC ASSY
cannot be reused.
24) Detach one end of the READER FPC using the SS-
93.

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25) Now detach the other end of the READER FPC
fixed to the HEAT SINK ASSY adhesive using the SS-
93. The READER FPC cannot be reused.
26) Use SS-93 again to detach the HEAT SINK ASSY
adhesive. Do not use it again. The HEAT SINK ASSY
adhesive has to be renewed also.
27) Use the dental tool to remove the two SCREW
CAPS. Be aware of the sharp point of the dental tool!
Be careful not to injure yourself!
28) Unscrew the two Torx+ size 4 screws in the
order shown. Do not use them again. Discard them.
29) Start releasing the A-cover assembly with the
SRT-6 as shown.
30) Carefully lift up the assembly to gain access to
the A-COVER ASSY connector. Use the SS-93 to open
the connector. Be careful not to damage the
connector or any nearby components!

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31) The A-COVER can now be separated. 32) Once the A-Cover is removed, check that all the
four A-BEZEL GROUND CLIPS are still mounted in its
place.
33) Protect the LCD with protective film. 34) Use the SS-93 to carefully lift up the LCD. Be
careful not to bend the display while loosening the
LCD adhesive!
35) Use the SS-93 to unlock the locking mechanism
of the LCD connector. Then carefully remove the LCD.
36) Remove the LCD adhesive with the SS-93.
Discard the adhesive. It cannot be used again.

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37) Nokia N97 mini disassembly is now complete.
-END OF DISASSEMBLY-

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11. ASSEMBLY HINTS
1) Before placing the A-COVER make sure all the four
A-BEZEL GROUND CLIPs are in place.
2) Place the LOCK KEY as shown.
3) After assembling engine board into the B-COVER,
check the right alignment of the LOCK KEY SWICTH.
4) Tighten the two M1.2X2, PANHEAD 2.5X0.6 T
PLUS-4IP screws to the torque of 7 Ncm in the order
shown.
5) Tighten the two M1.4 x 5.8 P3642 screws to the
torque of 12 Ncm in the order shown.
6) Tighten this M1.2X2, PANHEAD 2.5X0.6 T PLUS-
4IPscrew to the torque of 7 Ncm.

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7) Tighten these two M1.4x3.6 TORX PLUS 4IP
screws to the torque of 14 Ncm in the order shown.
8) Tighten this M1.4x2.5 TORX PLUS-4IP screw to the
torque of 8 Ncm.
9) Insert the USIM CARD TRAY. 10) Make sure the battery cover is assembled
correctly. First attach thehooks on the
Camera/Volume key side. Then close the LOCK KEY
side.