Nokia Customer Care2255 (RM-97)Mobile TerminalIssue 1 10/2005 Company Confidential ©2005 Nokia CorporationDisassembly/Assembly

Nokia 2255 Disassembly/assembly

for your safety

about your device

network services

get help

Phone at a glance

Quick keys

Scroll method

Set up your device

Insert the battery

Charge the battery

Use the keypad

Adjust the volume during a call

Lock the keypad (keyguard)

Text entry

Messages

Send items and drafts

Delete messages

listen to your voice messages

Call register

Call duration

Contacts

Contacts settings

Settings

Profiles

Time settings

Calling cards

Phone settings

Security settings

Network settings

Own number selection

Restore factory settings

Tools and games

Reminders

Extras

Currency converter

Countdown timer

Enhancements

Battery information

guidelines

Charging times

Care and maintenance

Additional safety information

Vehicles

Emergency calls

Index

2255

For your safety

Call

register your device

accessibility solutions

1. Phone at a glance

Left selection

device menus

charge the battery

Volume

answer calls

voice mail

activate or deactivate

send items and drafts

message settings

Call log

delete recent call list

contacts settings

personalize a profile

time settings

calling cards

phone settings

network settings

my menu settings

currency converter

countdown timer

nokia battery authentication guidelines

charging times

potentially explosive environments

emergency calls

technical information

troubleshooting

Mobile Terminal Components

Preliminary RF Troubleshooting

Transmitter Block Diagram

Transmitter Schematics

Transmitter Troubleshooting

Failed Test: Tx PA Detector

Tx RF Test Points

Tx AGC Tuning

Receiver Troubleshooting

Receiver Schematics

Turning on the Rx Path

Switching the Rx Gain, IF, and IP States

Receiver RF Troubleshooting Test Points

Receiver IF Troubleshooting Test Points

Cell Receiver Check from RF to IQ

Receiver Diagnostic using Signal Tracing and Call Box

Rx Front-End IC (N7150) DC Troubleshooting

Synthesizer Troubleshooting

Synthesizer Schematic

Synthesizer Troubleshooting Setup

MHZ VCTCXO Reference Clock

VCTCXO Manual Tuning

UHF Synthesizer Test Points

UHF Synthesizer Schematic

Incorrect UHF Frequency

Rx VHF Schematic

Incorrect Rx VHF Frequency

Tx VHF Schematic

Incorrect Tx VHF Frequency

FM Radio Troubleshooting

RM-97