Nokia 8210/8850 free download

File name nsm_2_3_&_nsb_6_epair_V3_0.pdf

nokia Customer Care E&A Technical Services Training Group CONFIDENTIAL NSM-2/3 & NSB-6 Date 23.07.2001 1 (36) Repairhints Version 3.0 Approved Repairhints 8210/8850/ 8890 NSM-2/3 & NSB-6 © NMP 2001 Checked by: Customer Care E&A Approved by: TS Training Group nokia Customer Care E&A Technical Services Training Group CONFIDENTIAL NSM-2/3 & NSB-6 Date 23.07.2001 2 (36) Repairhints Version 3.0 Approved GENERAL -How to use this document Put the QUICK REPAIR layouts behind this manual. Now you are able to follow these specifications with graphical layouts and it is easier for you to find the components and measuring points. -Component characteristics: Some components contain important data. Several described steps only are practicable if you are able to reflash/ realign the phone and/or rewrite IMEI/SIMlock in certain cases. Please pay attention to separate notes. -Underfills, broken balls, µBGA It is not possible to change underfilled components. The trial surely will damage PCB. All replaceable µBGA-components must be renewed after removing. Check soldering points, remove oxidated solderings (broken balls) carefully by enclosing few new solder before placing new components. µBGA must be soldered with NMP approved µBGA-rework machines only (e.g. Zevac/OK International). Only use recommended Fluxtype and an appropriate amount of it. Only use appropriate cleaning materials, don`t use scratching or rubbing tools. Clean PCB carefully after every rework and take great pains over the keyboard area. Do not make any loose wiring connections anywhere. If it is necessary to change any item located under the metal shields, first remove the shield, do not cut partially or bend it. -PCB handling -Realign after repair Characteristics of replacement parts are different. To prevent additional faults after repair (eg. low standby time, loosing network etc...) it is necessary to retune phone values after repair. © NMP 2001 Checked by: Customer Care E&A Approved by: TS Training Group nokia Customer Care E&A Technical Services Training Group CONFIDENTIAL NSM-2/3 & NSB-6 Date 23.07.2001 3 (36) Repairhints Version 3.0 Approved INTRODUCTION IMPORTANT: This document is intended for use by authorised NOKIA service centers only. The purpose of this document is to provide some further service information for NOKIA 8210/8850/8890 phones. It contains a lot of collected tips and hints to find failures and repair solutions easily. It will also 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 DLL version