Nokia ASHA 303 RM-763 User manual

Nokia Asha 303
RM-763
Service Manual Level 1&2
1
Co nf id e nt ial | Co p y rig ht © 2011Nokia |A ll rights reserved
V e r s io n 1 .0
SERVICE MANUAL
Level 1&2
Nokia Asha 303
RM-763
Transceiver characteristics
Band
WCDMA 850/900/1700/1900/2100
GSM850/900/1800/1900
Display
2.6” QVGA TFT screen, 240 x 320 pixels
Camera
3.2 Mpix EDoF
Operating Syste m
S40
Connections:
Micro USB 2.0
3.5mm AV jack
2.0mm DC jack
Bluetooth
FM Radio
WL AN
Transceiver with BP-3L battery pack
Talk time Standby
GSM:
Up to 8.2 h
WC DMA:
Up to 7.2 h
GSM:
Up to 731 h
WC DMA:
Up to 857 h
Note:
Talk times are dependent on network
parameters
and phone settings

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RM-763
Service Manual Level 1&2
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Table of contents
1. COPYRIGHT..........................................................................................................................................................................4
2. WARNINGS AND CAUTIONS.............................................................................................................................................5
2.1 WARNINGS.................................................................................................................................................................5
2.2 CAUTI ONS...................................................................................................................................................................5
3. ESD PROTECTION ...............................................................................................................................................................6
4. CARE AND MAI NTENANCE ................................................................................................................................................7
5. BATTERY INFORMATION...................................................................................................................................................8
6. EXPLODED VIEW.................................................................................................................................................................9
7. SERVICE DEVICES ................................................................................................................................................................10
8. SOFT WARE UPD ATE...........................................................................................................................................................11
9. DISASSEMBLY INSTRUCTIONS.........................................................................................................................................12
10. ASS EMBLY HI NTS................................................................................................................................................................18
11. SOLDER COMPONENTS ......................................................................................................................................................19

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RM-763
Service Manual Level 1&2
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CHANGE HISTORY
Sta tus
Version No.
Date
Comments
Approved
1.0
26.10.2011
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 no te tha t NOKI A 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
[e-mail]
Please keep in mind also that this documenta tion is continuously being updated and modified,
so watch always out for the newest version.

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RM-763
Service Manual Level 1&2
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1. COPYRIGHT
Copyright © 2011 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.
I MPORT ANT
This document is intended for use by qualified service personnel only.

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RM-763
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2. WARNINGS AND CAUTIONS
Please refer to the phone’s user guide for instructions rela ting to operation, care and
maintenance including important safety information. Note also the following:
2.1 Warnings
1. CARE MUST BE TAKEN ON INSTALLATION IN VEHICLES FITTED WITH ELECTRONIC ENGINE
MAN AGEMENT 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.
2.2 Cautions
1. Servicing and alignment must be undertaken by qualified personnel only.
2. Ensure all work is carried out at an an ti–s ta tic worksta tion and tha t an anti–static wris t
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 af ter servicing
and alignment.
5. Ensure all cables and wires are repositioned correctly

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RM-763
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3. ESD PROTECTION
Nokia requires that service points have sufficien t ESD protection (against sta tic
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 elec tronic parts of the product are susceptible to ESD. Resis tors, too, can be
damaged by static elec tr icity 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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4. 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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RM-763
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5. 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 attemp t to discharge the battery by any other means Use the ba ttery only for its
intended purpose.
Never use any charger or battery which is damaged.
Do not short-circuit the ba ttery . Accidental short-circuiting can occur when a metallic object
(coin, clip or pen) causes direct connection of the + and - terminals of the battery ( meta l str ip s
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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RM-763
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6. EXPLODED VIEW
A-COVER
I0003
EARPIECE MESH
I0004
TYPE LABEL
I0013
EARPIECE
I0005
DISPLAY
I0006
LIGHT SWAP PWB
I0010
CAMERA
I0014
DC JACK
I0016
AV JACK
I0017
B-COVER
I0021
BT/GPS FLEX
I0018
FUNCTION KEYMAT
I0002
C-COVER
I0024
QWERTY KEYMAT
I0007
TOUCH MODULE
I0001
DOMESHEET
I0009
IHF SPEAKER
I0019
END CAP
I0022
ANTENNA
I0020
BB SHIELDING LID
I0011
LINKO A SHIELDING LID
I0012
SCREW TORX+ SIZE 6
M1.4 X 1.7
I0015
SCREW TORX+ SIZE 6
M1.4 X 1.7
I0023
SCREW TORX+ SIZE 4
M1.4 X 3.6
I0008
3
3
3
3
3
3
L
L
3
3
3
3
L
L
3
3
3
L
A-COVER TOUCH ASSEMBLY
(I0001 - I0005)
1
LIGHT SWAP PACKAGE
(I0009 - I0013)
2
BT/WLAN ANTENNA MODULE
(I00016- I0018)
3ANTENNA MODULE
(I0019, I0020) 4
v1.0
3
3
L3L3
Only available
as assembly
Not reuseable
after removal
Repair/swap
only in level 3

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RM-763
Service Manual Level 1&2
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7. SERVICE DEVICES
CA-101 Service Cable
AC-11 Travel Charger
Battery BP-3L
SS-276 Camera removal tool
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.

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RM-763
Service Manual Level 1&2
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8. SOFTW ARE UPDATE
Flash concept (Point of Sale)
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, which is available on Nokia Online.

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RM-763
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9. DISASSEMBLY INSTRUCTIONS
1) Nokia Asha 303 disassembly.
2) You must use the Nokia Standard Toolkit version
2. You will also need an AV plug, a DC plug and the
SS-276 camera removal tool.
1) Protect the A-COVER with protec tive film.
2) Open the C-COVER by using the release notch.
3) Remove the C-COVER.
4) Use the SRT-6 to release the END CAP from the two
shown places.

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RM-763
Service Manual Level 1&2
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5) Remove the END CAP.
6) Use the SS-93 to release the two shown clips
holding the QWERTY KEYMAT. Make sure that the
QWERTY KEYMAT is levered out completely.
7) Remove the QWERTY KEYMAT.
8) Unscrew the two Torx+ size 4 screws in the order
shown.
9) Unscrew the four Torx+ size 6 screws in the order
shown.Do not use them again. Discard them.
10) Separate the ENGINE BOARD including the A-
COVER from the B-COVER by pushing up from the
bottom s ide of the ENGI NE BOARD.

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RM-763
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11) Remove the ENGINE BOARD including the A-
COVER.
12) Unscrew the four Torx+ size 6 screws in the order
shown. Do not use them again. Discard them.
13) Open the TOUCH MODULE connector with the SS-
93. Be careful not to damage the connector or any
components nearby.
14) Open the DISPLAY connector with the SS-93. Be
careful not to damage the connector or any
components nearby.
15) Remove the ENGINE BOARD.
16) Place the camera removal tool SS-276 on top of
the CAMERA and push the button on top of the SS-
276.

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RM-763
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17) Lif t up the SS-276 and remove the CAMERA.
18) Use the dental tool to release one corner of the
DOMESHEET. Be careful not to injure yourself with the
sharp end of the dental tool.
19) Peel off the DOMESHEET with tweezers. Do not
use it aga in. Discard it.
20) Release the DI SPLAY w ith the SS-93 from the top
side.
21) Remove the DISPLAY.
22) Protect the DI SPL AY with protective film.

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RM-763
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23) Protect the other side of the A-COVER with
protective f ilm.
24) Lever out the E ARPI ECE with the dental tool.
25) Remove the EARPIECE with tweezers. Do not use
it again. Discard it.
26) Lever out the E ARPI ECE MESH with the dental tool.
Note tha t the EARPI ECE MESH has to be removed only
if it is distorted.
27) Remove the EARPIECE MESH with tweezers. Do
not use it again. Discard it.
28) Release the BT/WLAN ANTENNA MODULE with the
SS-93 from the two shown places.

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RM-763
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29) Remove the BT/WLAN ANTENNA MODULE with
tweezers.
30) Use the sharp end of the SS-93 to release the
ANTENNA MODULE from the two shown places.
31) Remove the ANTENNA MODULE.
32) Remove the AV JACK with an AV plug.
33) Remove the DC JACK with a DC plug.
34) The Nokia Asha 303 disassembly is now
complete.
-END OF DISASSEMBLY-

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RM-763
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10. ASSEMBLY HINTS
1) Tighten the four Torx+ size 6 screws to the torque
of 15 Ncm.
2) Assemble the A-COVER including the ENGINE
BOARD to the B-COVER as flat as possible. Make sure
that the USB connector fits to the B-COVER.
3) Slightly push down to attach the A-COVER
including the ENGINE BOARD to the B-COVER.
4) Tighten the four Torx+ size 6 screws to the torque
of 21 Ncm.
5) Tighten the two Torx+ size 4 screws to the torque
of 15 Ncm.

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RM-763
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11. SOLDER COMPONENTS
X7552
X6100
X7553
F3300
F2050
S2552
S2551S2550
G2200
S2500S2502S2504
S2501S2503
TOP
BOTTOM
v1.0

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