Nokia 1255, RH-79 Service Manual

Nokia Customer Care

SERVICE MANUAL

Level 1 and 2

RH-79 Mobile Terminal

1255

Issue 1

COMPANY CONFIDENTIAL

ISSUE 1 02/2006

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Amendment Record Sheet

Amendment No Date Inserted By Comments

001 02/2006 Frankie Yang Issue 1

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1 2 5 5

RH-79

Transceiver characteristics:

• CDMA 800MHz

• 96 x 65 pixel black and white display

• Removable User Information Module (RUIM), disabled in non-RUIM markets

• Internal antenna

• Internal vibra

• EVRC Vocoder

• 8 polyphonic ringtones

• Predictive text

Transceiver with BL-5C 900mAh Li-Ion battery pack

Talk time Standby time Note Up to 240 minutes

Environmental characteristics:

• Lead-free soldered

Up to 240 hours

Depends on network parameters

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Contents Page

General Repair Hints.......................................................................................... 11

Pathfinder on Nokia Online for Technicians....................................................... 12

Support Library............................................................................................12

Training........................................................................................................13

Level 1 and 2 e-learning...........................................................................13

Exploded View and Component Disposal.......................................................... 14

Spare Parts Overview......................................................................................... 15

Spare Parts List.................................................................................................. 16

Service Tools...................................................................................................... 17

Software Update................................................................................................. 18

Point of Sales Flashing................................................................................18

Flashing Instructions....................................................................................19

Disassembly Instructions.................................................................................... 22

Domesheet Exchange Instructions..............................................................25

Display Exchange Ins truction s......................................................................26

Quick Troubleshooter ......................................................................................... 27

Legend for Quick Troubleshooter.................................................................27

Quick Troubleshooter – Part 1.....................................................................28

Quick Troubleshooter – Part 2.....................................................................29

Go-No-Go Test................................................................................................... 30

Battery Test ........................................................................................................ 30

Forwarding Repairs ............................................................................................ 31

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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 and Nokia Connecting People 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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Warnings and Cautions

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.

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For Your safety

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.

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Battery information

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

as household waste.

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Care and Maintenance

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.

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Company Policy

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

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General Repair Hints

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.

y Take 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.

y Reuse mechanical parts that are not soldered if they did not repair the failure

(except shielding lids and bent parts).

y Make 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).

y Always 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.

y Note that some malfunctions could be software related and resolved by a

software update.

y Refer to additional documents available on Nokia Online (NOL).

Note: Check Nokia Online (NOL) for latest news and files on a regular basis.

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Pathfinder on Nokia Online for Technicians

Support Library

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.

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Training Level 1 and 2 e-learning

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 Assembly Troubleshooting

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

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Exploded View and Component Disposal

Refer to the image below for the recommended ecologically sound disposal of components. Colorized components show the different categories.

A-Cover Assy

Screw (T 1.8 x 6)

RUIM Label (A1)

DC Jack (A2)

Microphone (A2)

Vibrator (A2)

Release Spring (A2)

Release Button (A2)

I001

Keymat

I002

I003

Domesheet

I009

Rubber Cap

I008

＊

I011

I017

I016

I015

I019

I020

＊

LCD Module Sh ielding Assy

I004

Receiver (Earpiece)

I005

LCD Module

I006

Engine Module (not supplied)

I007

Speaker (A3) (A2)

I014

＊

Antenna (A3) (A2)

＊

I013

Shielding Case (A1)

I010

＊

D-Cover Blank (A2)

＊

I012

Type Label (Level 3 /4 only)

I021

RUIM Lid (A2)

＊＊

I018

B-Cover Blank

I022

A1 = SHIELDING CASE ASSY

A1 = SHIELDING CASE ASSY A2 = D-COVER ASSY

A2 = D-COVER ASSY A3 = SAM MODULE

A3 = SAM MODULE

= ONLY AVAILABLE AS

＊

ASSEMBLY

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Spare Parts Overview

A Cover Assy

A Cover Assy I001

I001

Keymat

Keymat I002

I002

Screw (T1.8 x 6)

Screw (T1.8 x 6) I003

I003

A2 = D-Cover Assy

A3 = SAM Module

Antenna (A3)(A2)

＊

I013

D-Cover Blank (A2)

＊

I012

I012 Vibrator (A2)

Vibrator (A2)

Vibrator (A2) I015

I015

Release Spring(A2)

＊

I019

Release Button (A2)

＊

I020

Engine Module (not supplied)

Engine Module (not supplied) I007

I007

Speaker (A3)(A2)

＊

I014

Receiver (Earpiece)

Receiver (Earpiece) I005

I005

RUIM Lid(A2)

＊

I018

Microphone(A2)

Microphone(A2) I016

I016

DC Jack (A2)

DC Jack (A2) I017

I017

Rubber Cap

Rubber Cap I008

I008

LCD Module Shielding Assy

LCD Module Shielding Assy I004

I004

LCD Module

LCD Module I006

I006

A1 = SHIELD CA SE ASSY

A1 = SHIELD CA SE ASSY A2 = D-COVER ASSY

A2 = D-COVER ASSY

A2 = D-COVER ASSY A3 = SAM MODULE

A3 = SAM MODULE

＊

= ONLY AVAILABLE AS

ASSEMBLY

Domesheet

Domesheet I009

I009

A1 = Shielding Case Assy

Shielding Case (A1)

Shielding Case (A1) I010＊

I010＊

RUIM Label (A1)

RUIM Label (A1) I011＊

I011＊

Type Label (Level 3 /4 only)

Type Label (Level 3 /4 only) I021

I021

B Cover Blank

B Cover Blank I022

I022

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Spare Parts List

Refer to the latest Service Bulletins (spare parts, SWAP units and service tools) on the Nokia Online website for the 1255.

Note: Service Bulletins must be checked on daily basis to ensure that up-to-date order codes are used.

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Service Tools

CA-82DS Data Service Cable (USB)

This cable provides connection from the USB port of the personal computer or notebook to the DB9 connector of the Flash Adapter.

CA-83DS Data Service Cable (Serial)

This cable provides connection from the serial port of the personal computer or notebook to the DB9 connector of the Flash Adapter.

SF-93 Flash Adapter

This device allows Point of Sale (POS) locations to flash the mobile terminal.

SS-91 Domesheet Alignment Jig

This jig is used to align the adhesive domesheet assembly onto the PWB in the proper location during domesheet replacement.

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Software Update

Point of Sales Flashing

Please follow the user guide inside the sales package to use the Flash Adapter. Check always for the latest version of flash software, which is available on NOKIA

Online.

Charger

Data Service Cable (USB)

Flash Adapter

Service SW

It is very important to follow this connection and removal procedure, otherwise, the contact pins of the Flash Adapter will be damaged.

1. Connect the Flash Adapter to the mobile terminal, starting from the battery connector side.

2. Press it down until the two locking tabs are locked.

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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.

Flashing Instructions

z How to access Flashing screen

Click on Bundle Flashing tab.

Or select Bundle Flashing in Phone menu.

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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.

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z Decide which images are to be updated

Activate or deactivate check boxes in front of the image texts to check the one you want to update, and uncheck the one don’t need to update.

z Check the Automatic backup/restore user data or phonebook data box

z Start to upgrade

Click the Update button.

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Disassembly Instructions

Dental Tool

TweezersSORX T6

SRT-6

1. Tools for disassembly and reassembly. 2. Protect the display surface with a film.

TweezersSORX T6

3. Press the Release Button and remove the B-cover.

5. Repeat step 4 on the other side of the mobile terminal.

4. Place the SRT-6 into the gap between A-cover and D-cover . Lever to separate the snaps of A-cover and D-cover.

6. Insert the SRT-6 into the gap between A-cover and D-cover. Slip the SRT-6 to separate the snaps between A-cover and D-cover.

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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.

3.

1.

5.

6.

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.

2.

4.

11. Remove the LCD Module Shielding Assy.

12. Remove the Receiver (earpiece) from LCD Module Shielding Assy.

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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.

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.

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Domesheet Exchange Instructions

1. Use the SRT-6 to lift the domesheet. 2. Remove the domesheet.

3. Place a new domesheet on the Domesheet Alignment Jig.

5. Press firmly on the PWB to ensure correct bonding of the domesheet.

4. Align the guide pins and place the PWB on the Jig.

6. Inspect to ensure proper adhesion of domesheet to PWB.

Note: After using the heatgun, the domesheet needs to be replaced.

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Display Exchange Instructions

1. Protect the LCD Module by covering it with a piece of film.

3. Remove the LCD Module.

2. Disconnect the BTB connector.

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Quick Troubleshooter

Legend for Quick Troubleshooter

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.

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Quick Troubleshooter – Part 1

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Quick Troubleshooter – Part 2

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Go-No-Go Test

After a visual check, a Go-No-Go test must be carried out to guarantee the functionality of the mobile terminal if the unit has been opened.

Battery Test

A battery tester allows you test the capacity of Nokia batteries. Refer to the information on the Nokia Online website.

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Forwarding Repairs

When forwarding the mobile terminal for repairs to a higher level service supplier use a swap carton as shown below.

1. Always Protect the window with a protection film.

3. Add repair documentation to the swap carton, e.g. completed service note.

2. Put the unit under the stretch film.

4. Fold the swap carton as shown.

Note: There are two different sizes of swap cartons for common mobile terminals.

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