Nokia 6310 Repairhints

NPE-4 6310 Repairhints Customer Care Europe & Africa Version 1.0 Approved SCCE Training Group Date 27.05.2002

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Repairhints

Service-Level 3 & 4

6310

NPE-4

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NPE-4 6310 Repairhints Customer Care Europe & Africa Version 1.0 Approved SCCE Training Group Date 27.05.2002

General

-How to use this document

Place the schematics behind this manual. Now you are able to follow these specifictions with graphical layouts and it is easier for you to find the components and measuring points.

-General handling

Be very careful when disassembling the NPE-4 while removing the A-Cover from the Back-Cover. Refer to disassembling instructions at the service manual of NPE-4.

-µBGA components and broken balls

Special attention to µBGA components: All replaceable µBGAs must be renewed after removing. Reflow using a hot air fan is not allowed. Check soldering points and remove oxidated solderings (broken balls) carefully by enclosing a few new solders before placing new components. The only allowed way changing µBGA components is to use µBGA rework maschines, approved from NMP (e.g. ZEVAC/ OK International). Use recommended Fluxtype and an appropriate amount of it only.

-PCB handling & cleaning

To avoid damages of PCB and/or components through electrostatic discharging, handle the module in ESD-suitable cases only. Always wear ESD-bracelets, which must be connected to earth bonding point. Do not make any loose wiring connections or do some other unqualified rework anywhere. For cleaning use appropriate materials only. Do not use scratching or rubbing tools. Because of organic surface protection (OSP), cleaning must only be done with a lint-free cloth, which may be moistening with DIwater. IPA or other solvent like ethanol should only be used to clean gold pads for spring contacts without affecting the surrounding copper layers.

-Component charactaristics

Some components contain important data. Several described steps are practicable only if you are able to reflash/ realign the phone and/ or rewrite IMEI/ SIMlock in certain cases. Please pay attention to separate notes.

-Realign after repair

Characteristics of replacement parts are different. To prevent additional faults after repair (RX quality, TX power etc.) it is necessary to retune phone values.

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NPE-4 6310 Repairhints Customer Care Europe & Africa Version 1.0 Approved SCCE Training Group Date 27.05.2002

IMPORTANT:

This document is intended for use by authorized NOKIA service centers only.

The purpose of this document is to provide some further service information for NPE-4 6310. It contains a lot of collected tips and hints to find failures and repair solutions easily. It also will give support to the inexperienced technicians. Saving process time and improving the repair quality is the aim of using this document. We have built it up based on fault symptoms (listed in "Contents") followed by detailed description for further analysis. It is to be used additionally to the service manual and other service information like Service bulletins, for that reason it does not contain any circuit descriptions or schematics.

All measurements are made using following equipment:

Nokia repair SW : Phoenix

Phoenix Application : 3.60.00

Flash SW (CMT) : 4.20

Test Jig : MJS-40

Docking station : JBV-1

Docking Adapter : MJF-9

Digital Multimeter : Fluke 73

Oscilloscope : Fluke PM 3380A/B

Spectrum Analyzer : Advantest R3162 with an analogue probe

RF-Generator / : CMU 200

GSM Tester

While every endeavour has been made to ensure the accuracy of this document, some errors may exist. If the reader finds any errors, NOKIA should be notified in writing, using following procedure:

Please state:

Title of the Document + Issue Number/Date of publication. Page(s) and/or Figure(s) of error.

Please send to: Nokia GmbH

Technical Services E&A Meesmannstr.103 D-44807 Bochum / Germany Email: training.sace@nokia.com

Copyright © Nokia Mobile Phones. This material, including documentation and any related computer programs, is protected by copyright, controlled by Nokia Mobile Phones. All rights are reserved. Copying, including reproducing, modifying, storing, adapting or translating any or all of this material requires the prior written consent of Nokia Mobile Phones. This material also contains confidential information, which may not be disclosed to others without the prior written consent of Nokia Mobile Phones.

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NPE-4 6310 Repairhints Customer Care Europe & Africa Version 1.0 Approved SCCE Training Group Date 27.05.2002

Contents

PREFACE GENERAL 2

CHAPTER 1 Additional information 5

- BB shield disassembling instructions 5

- Different battery connectors 6

CHAPTER 2 Electrical faults 6

- Totally dead 6

- Drop calls 8

- No Service 8

- No Service Flowchart 9

- No service, no RSSI 10

- RX Flowchart 11

- No service, no TX 12

- TX Flowchart 14

- Display to dark/ light 15

CHAPTER 3 Tuning problems with Phoenix SW 3.55 15

- Battery calibration – “Low battery” when making a call 15

- “RX Channel Select Filter calibration” all measurements = “0” 15

- TX tuning problem 15

CHAPTER 4 SW faults 15

- Totally dead 15

- Phone jammed 15

- No memory access/ hangs up 15

- No service 15

CHAPTER 5 Hookswitch problems 16

- Sometimes not possible to release “incoming call” 16

- No voice dial possible 16

CHAPTER 6 Change History 17

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NPE-4 6310 Repairhints Customer Care Europe & Africa Version 1.0 Approved SCCE Training Group Date 27.05.2002

Additional Information

BB shield disassembly instructions

For disassembly it is important to lay the PWB on a plane underground so that the bottom connector is hanging free to prevent bending of PWB and cracking of the connector´s solderings (See pictures below).

Wrong

Correct

When disassembling the BB shield be very careful because Flash D450 could be damaged. Start by lifting and bending the lid with a tweezer at the marked points 1- 3 (see pictures below). Do not use too much force on the frame because it could be damaged and the PWB also could be mechanical stressed.

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NPE-4 6310 Repairhints Customer Care Europe & Africa Version 1.0 Approved SCCE Training Group Date 27.05.2002

Different battery connectors

There are two different battery connectors under the same part code (5400239). (See pictures below). If it is nessesary to exchange the battery connector X101/ X102 take care that you use the same one. The mixed replacement causes switch-off trouble

Different surface and width of. spring contacts Different position of spring contacts

Difference

Differents of spring contacts

Difference

Note! It is not allowed to use the battery connectors of NPE-3 (part code 5469069) because of smaller size.

Electrical faults

Totally dead

Check VBATIN=3.6 VDC at L260 (depends on workbench supply). If not ok, check X101, X102 battery connectors for mechanical damages or cold solderings. Refer also to chapter “Additional Information/Different battery connectors”. Check 32.768 kHz sinewave, Vpp = 800 mV at C209 (See picture below).

Oscilloscope settings:

Ampl: 200mV Time/Div: 10µs/Div AC/DC/GND: AC

If there is no signal, check B200 circuit for shorts or disconnection and change faulty components.

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