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Customer Care Solutions
Technical Documentation
SERVICE
MANUAL
RH-20
Cellular Phones
NMP Part No: Original 0275899
COMPANY CONFIDENTIAL
Issue 1 10/2003
Copyright 2003 Nokia Corporation. All Rights Reserved
Customer Care Solutions
Technical Documentation
Amendment Record Sheet
Amendment No Date Inserted By Comments
10/2003 ViK Issue 1
Issue 1 10/2003
Copyright 2003 Nokia Corporation. All Rights Reserved
Customer Care Solutions
Technical Documentation
Nokia RH-20 Service Manual Structure
1. General Information
2. Parts List
3. Service SW Instructions and Service Concepts
4. Service Tools
5. Disassembly and Assembly Instructions
6. Troubleshooting
7. System Module & User Interface
Issue 1 10/2003
Copyright 2003 Nokia Corporation. All Rights Reserved
Customer Care Solutions
Technical Documentation
IMPORTANT
This document is intended for use by qualified service personnel only.
Company Policy
Our policy is of continuous development; details of all technical modifications will be
included with service bulletins.
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 CORPORATION 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 Ltd
CCS Technical Documentation
PO Box 86
FIN-24101 SALO
Finland
Note: This manual is COMPANY CONFIDENTIAL material.
Issue 1 10/2003
Copyright 2003 Nokia Corporation. All Rights Reserved
Customer Care Solutions
Technical Documentation
Warnings and Cautions
Please refer to the phone's user guide for instructions relating to operation, care and
maintenance including important safety information. Note also the following:
Warnings:
1. CARE MUST BE TAKEN ON INSTALLATION IN VEHICLES FITTED WITH ELEC-
TRONIC ENGINE MANAGEMENT SYSTEMS AND ANTI-SKID BRAKING SYS-
TEMS. 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 CELLU-
LAR TELEPHONES, MAY INTERFERE WITH THE FUNCTIONALITY OF INADE-
QUATELY 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 dam-
age may result.
4. Use only approved components as specified in the parts list.
5. Ensure all components, modules screws and insulators are correctly re-fit-
ted after servicing and alignment. Ensure all cables and wires are reposi-
tioned correctly.
Issue 1 10/2003
Copyright 2003 Nokia Corporation. All Rights Reserved
Customer Care Solutions
Technical Documentation
ESD Protection
Nokia requires that phone repair places have sufficient ESD protection
(against static electricity) when servicing cellular phones.
A cellular phone, which is ready for use, can be handled normally without ESD
protection. The SIM card and battery can be replaced in normal conditions of
use.
To replace the color cover ESD protection must be applied, except for the
phone covers which can be replaced by the customer.
All electronic parts of the phone , including the display, 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 phone or handling the phone compo-
nents must be done under ESD protection.
ESD protected spare part packages MUST NOT be opened/closed out of an
EPA.
For more detailed information about ESD protection and EPA, contact your
local Nokia After Market Services representative.
Issue 1 10/2003
Copyright 2003 Nokia Corporation. All Rights Reserved