Please refer to the product’s user guide for instructions relating to operation,
care and maintenance including important safety information. Note also the
following:
Warnings:
1. IF THE DEVICE CAN BE INSTALLED IN A VEHICLE, 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 PRODUCT 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.
QUALIFIED SERVICE
Only qualified personnel may install or repair phone equipment.
ACCESSORIES AND BATTERIES
Use only approved accessories and batteries. Do not connect incompatible
products.
CONNECTING TO OTHER DEVICES
When connecting to any other device, read its user’s guide for detailed safety
instructions. Do not connect incompatible products.
ESD protection
Nokia requires that product service points have sufficient
ESD protection (against static electricity) when servicing products.
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.
Note that 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 that 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 of batteries in a fire!
Dispose of batteries according to local regulations (e.g. recycling). Do not dispose
The product is a product 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. Unauthorized
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.
Our policy is of continuous development; details of all technical modifications will be
included with service bulletins.
While every endeavour has been made to ensure the accuracy of this document,
some errors may exist. If any errors are found by the reader, NOKIA MOBILE
PHONES Business Group should be notified in writing.
Please state:
Title of the Document + Issue Number/Date of publication
Latest Amendment Number (if applicable)
Page(s) and/or Figure(s) in error
Please send to:
NOKIA CORPORATION
Nokia Mobile Phones Business Group
Nokia Customer Care
PO Box 86
FIN-24101 SALO
Finland
This section provides general hints on repairs:
Read the tutorials or user guide on www.Nokia.com > Choose your location >
Support > Product Support. Select the appropriate mobile terminal model to
become familiar with the Nokia product.
yTake adequate ESD precautions before starting repairs, e.g. work in an ESD
Protected Area, and that an anti-static wrist strap is worn.
y Use gloves to avoid corrosion and fingerprints.
y Protect windows and displays with a film to avoid dust and scratches.
y Use a lint-free cloth when cleaning the LCD module (e.g. Micro-Fiber cloth).
y Use a soft cloth/ESD brush and Isopropanol when cleaning the pads. Do not
use a glass fiber pencil as it will scratch the surface and will lead to corrosion.
yReuse mechanical parts that are not soldered if they did not repair the failure
(except shielding lids and bent parts).
yMake sure to replace the shielding lids with new ones when removing them,
so that the high-frequency leakage does not affect the device.
y Always use original Nokia spare parts.
y Check the soldering joints of the parts causing problems (e.g. soldered
connectors or switches) and resolder them if necessary (Level 2 only).
y Remove redundant soldering flux after repair.
y Meet the torque requirements when assembling the terminal (see also
"Torques for transceiver assembly" document found on Nokia Online).
yAlways use properly functioning test equipment to test to be sure if it is the
mobile terminal and not faulty equipment causing the malfunction.
y A UIM card is required for all Go-No-Go tests.
y Make a note of the Item code causing the malfunction when making fault log
entries. Also complete the appropriate part code from the assembly if
needed.
yNote that some malfunctions could be software related and resolved by a
software update.
yRefer to additional documents available on Nokia Online (NOL).
Note: Check Nokia Online (NOL) for latest news and files on a regular basis.
In addition to the information in this Service Manual, refer to the main
documentation database Nokia Online (NOL) that houses additional information,
such as multimedia content (video clips and interactive tutorials).
Navigate to the Support Library section as follows:
Nokia Online > Care Services > Support Library > Under the Select Category
pulldown menu select > Support Library. Under the Subcategory pull-down menu
select the appropriate product number. Under the second the Subcategory
pull-down menu select Field Service Bulletins. Download the latest Service
Bulletins available.
Available product documentation for each product may include:
y Instructions
y General Service Bulletins
y Product related documents
y Spare Part Service Bulletins
y Service Tools Service Bulletins
y Common Software Service Bulletins
Note: Reviewing the Service Bulletins will indicate if existing documents have
become obsolete. All new information must be processed and implemented as soon
as possible.
Content formerly found on Nokia CarePoint, such as Online Troubleshooting,
Product Information, Videos - Disassembly/Reassembly can now be found on
the Nokia Online website.
Navigate to the Training section as follows:
Nokia Online > Care Services > Training
Level 1 and 2 e-learning courses offer quick product overviews and support on
repair and use of Nokia mobile terminals:
Overview and Guides Disassembly and AssemblyTroubleshooting
Basic information about
the mobile terminal,
features and
technologies
Recommendation: Download the newest versions of very large files, e.g. videos,
Phoenix packages or Service Manuals only once and distribute them for further
use.
Instructions on disassembling
and reassembling the mobile
terminal
Step-by-step instructions
on locating and repairing
the most common
problems with the mobile
terminal
3. Af ter flashing is finished, slide these two
locking tabs backward at the same time to
unlock them.
4. Unplug the adapter and remove it from the
mobile terminal.
Flashing function in Service Software is used for software upgrade to download
mobile terminal images from PC to target mobile terminal. Mobile terminal images
include ARMPRG, Boot Code, Application Code, Language Pack and File System.
Users only need to select the necessary images to upgrade but not all images
every time. Before the upgrade process, user can select the “automatic
backup/restore user data” function to backup or restore files of phonebook,
messages and call register, if necessary.
Login Account
To start flashing, user has to login by entering a pair of user name and password.
1255 software will provide appropriate functions according to the log in information
based on different service level. If user wants to log in via different username and
password, please log out first. See below table for login account information.
Service Level User name Password
Level 1 chuck delta
Level 2 captain toctoc
Login and logout
zThree ways to access login screen:
Initiate 1255 Service Software by launching RH79CCS12RXXX.exe.
Select an active phone. Note that ‘Offline’ means you can use service software
functions while the mobile terminal is not connected, e.g. edit phonebook and
data which is saved in local drive of your service PC or Notebook.
z Window displaying requirements for Bundle Flashing
z Select image files
Click button which is next to “Latest Version” to browse a folder in your PC.
Service software would automatically find the latest version bundle image in this
folder. Or click button which is next to “Bundle File Path” to browse a bundle
image file in your PC.
Note that the users can only flash file system and language pack images which
are compatible with the operator setting value of the connected phone, i.e. a
Unicom phone can’t flash Vivo’s language or file system images.
7. Repeat step 6 on the other side of the
mobile terminal.
9. Remove the keymat.
8. Remove A-cover and take out the Engine.
10. Use a TORX T6 screwdriver to loos en and
remove the six Torx screws (T1.8x6), in the
order shown. Use torque driver set to 25Ncm
@ 700 rpm. The tolerance is +/-2Ncm. For
re-assembly, screws can be replaced in
reverse order.
11. Remove the LCD Module Shielding Assy.
12. Remove the Receiver (earpiece) from LCD
Module Shielding Assy.
13. Carefully grip both sides of the device and
gently pull out the PWB Module vertically from
D Cover As sembly.
15. Use the dental tool to remove the Vibrator. 16. Use the tweezers to remove the DC Jack.
14. Use the dental tool gently to unsnap SAM
Module and pull up to remove it from the
D-cover.
17. Use the tweezers to remove the
Microphone.
18. Without touching the connector, pee l off the
rubber cap of earphone jack.
Note: The speaker is an integral part of the SAM Module to ensure optimum RF
performance and must not be replaced individually. To assemble the mobile terminal,
follow the “Disassembly Instructions” in reverse order.
This legend is valid for all parts of the Quick Troubleshooter.Follow the steps until the
problem is solved. If these steps do not resolve the problem, you are not authorized to
proceed.
Only marked components can be changed.
Starting point of repair activities regarding the observed
fault symptoms.
Follow the arrows step by step.
Pads or contacts: Check optical and mechanical
condition particularly for corrosion. Clean if necessary.
Measure component for electrical functionality and
change if needed (Level 2 only).
Pads or contacts: Check optical and mechanical
condition particularly for corrosion. Clean with ESD
brush only, if necessary.
No more actions possible. Send product to the
appropriate service supplier with higher service level.