Trouble Shooting Guide.pdf

Trouble Shooting Guide, Electrical

Applicable for W380, Z555

Contents

General ........................................................................................................................... 2

Repair Actions for Manual Test Failures ............................................................... 3

2.1 Power On / Off ................................................................................................. 3

2.2 Software Flash ................................................................................................ 3

2.3 Charging ........................................................................................................... 3

2.4 Charging with USB ......................................................................................... 3

2.5 Hands-Free connection (PHF) ...................................................................... 3

2.6 SIM .................................................................................................................... 3

2.7 Main Display .................................................................................................... 3

2.8 Sub Display ...................................................................................................... 3

2.9 Display Illumination ......................................................................................... 3

2.10 Flip Sensor ....................................................................................................... 3

2.11 Main Keypad Illumination .............................................................................. 3

2.12 Main Keypad Keys .......................................................................................... 3

2.13 Side Keys ......................................................................................................... 3

2.14 Key Lock Switch (W380 ONLY) .................................................................... 3

2.15 Touch Keys (W380 ONLY) ............................................................................ 3

2.16 Vibrator ............................................................................................................. 3

2.17 Earphone (Receiver) ...................................................................................... 3

2.18 Polyphonic Speaker (rear speaker) ............................................................. 3

2.19 Microphone ...................................................................................................... 3

2.20 Real Time Clock .............................................................................................. 3

2.21 Camera ............................................................................................................. 3

2.22 Gesture Control ............................................................................................... 3

2.23 Bluetooth .......................................................................................................... 3

2.24 Memory Card Reader ..................................................................................... 3

2.25 FM Radio .......................................................................................................... 3

Repair Actions for Go/No Go Test Failures .......................................................... 4

3.1

3.2

Network Connection ....................................................................................... 4

Repair Actions for Calibration Routine Failures .................................................. 4

Revision History ........................................................................................................... 4

Sony Ericsson Mobile Communications AB

Other Failures .................................................................................................. 4

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Trouble Shooting Guide , Electrical

1 General

The purpose of this document is to indicate the electrical level repair actions associated with the

different failure symptoms.

For symptoms that have multiple repair actions, the repair actions are listed in order of their

probability of creating a successful repair. The first action has the highest probability, and

subsequent actions have lower probabilities. The intention is for the repair technician to

implement the first repair action and then retest the phone. If the phone continues to fail the same

test, then the technician should continue to the second repair action. If the phone continues to fail

the same test after all of the repair actions are exhausted, then the phone will be considered not

reparable at this level.

This document should be used only after the actions from the Mechanical Trouble Shooting Guide

have been exhausted for the specific symptom.

Voltage, current, and resistance information is provided for some symptoms to enable faster

repairs. Purchasing this equipment and performing these measurements is optional but

recommended.

Perform current measurements using a

dummy battery and power supply with digital

current display. The phone should be fully

assembled.

Perform voltage measurements with a

multimeter.

Perform resistance measurements with a

multimeter.

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Sony Ericsson Mobile Communications AB

Trouble Shooting Guide , Electrical

2 Repair Actions for Manual Test Failures

Failure

Failure Symptom

Repair Action

2.1 Power On /

Off

Current draw when powered off

D2599

•

N2503

•

N2601,N2602

Sustained current draw greater than 300

mAmps

•

No Repair Action

Will not power on AND will not flash

•

No Repair Action

Hangs with vibrator on

•

No Repair Action

Phone hangs in menus

•

D2599

Other symptoms

•

Replace X0616 if damaged

Back up battery

•

C0661

2.2 SoftwareFlash

N2601,N2602

•

V2698

2.3 Charging

Replace X2600 if damaged

•

V0611

•

V0674

•

V0671

2.4 ChargingwithUSB

V0670

•

V0671

•

N2603

2.5 Hands-Freeconnection(PHF)

•

N2203

2.6 SIM

•

Replace X1102 if damaged

2.7 MainDisplay

•

Replace X1201 if damaged

2.8 SubDisplay

•

Replace X1201 if damaged

2.9 DisplayIllumination

•

Replace X1201 if damaged

2.10 Flip Sensor

•

Replace X1101 if damaged

2.11 Main Keypad Illumination

•

Replace X1101 if damaged

2.12 Main Keypad Keys

•

Replace X1101 if damaged

2.13 Side Keys

•

Replace X1102 if damaged

2.14 Key Lock Switch (W380 ONLY)

•

Replace X1102 if damaged

2.15 Touch Keys (W380 ONLY)

•

Replace X1201 if damaged

2.16 Vibrator

•

Replace X1102 if damaged

2.17 Earphone (Receiver)

•

Replace X1201 if damaged

2.18 Polyphonic Speaker (rear speaker)

•

Replace X1201 if damaged

2.19 Microphone

•

Replace X1101 if damaged

2.20 Real Time Clock

•

No Repair Action

2.21 Camera

•

Replace X1201 if damaged

2.22 Gesture Control

•

Replace X1201 if damaged

2.23 Bluetooth

D2599

•

N2503

2.24 Memory Card Reader

•

Replace X1102 if damaged

2.25 FM Radio

•

D2599

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•

Trouble Shooting Guide , Electrical

3 Repair Actions for Go/No Go Test Failures

3.1 Network Connection

Phone fails to lock on to network during radiated

(wireless) Go / No Go test

•

Use RF probe and fixture to perform conducted

Go / No Go test

Phone fails conducted (RF probe) Go / No Go test

•

Run Calibration Routine

Phone passes conducted (RF cable) Go / No Go test

•

Replace Antenna and repeat radiated test

Phone still fails radiated (wireless) Go / No Go test

•

Replace X5300 or W5301 if they appear

damaged and repeat radiated test

3.2 Other Failures

Phone fails any other portion of Go/No Go testing

•

Run Calibration Routine

Phone that failed Go/No Go test passes calibration

•

Repeat radiated (wireless) Go/No Go test

4 Repair Actions for Calibration Routine Failures

No Repair Actions Available

5 Revisi onHistory

Rev.

Date

Changes / Comments

2008-Feb-29 Initial Release

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Sony Ericsson Mobile Communications AB

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