Ericsson FALLAS K310 Diagram

Trouble Shooting Guide, Mechanical

Applicable for K310

Contents

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

1

1.1 Service functions in the software...........................................................2

1.2 Misuse and other no warranty issues ....................................................3

2 Appearance Problems....................................................................................... 6

3 Network/Signal Problems .................................................................................8

4 On/Off Problems ..............................................................................................11

5 Audio Problems ...............................................................................................13

6 Key Problems................................................................................................... 17

7 Display Problems ............................................................................................20

8 Illumination Problems .....................................................................................21

9 Alert Problems .................................................................................................23

10 SIM Problems...................................................................................................25

11 Charging/Capacity Problems .........................................................................26

12 Camera Problems ............................................................................................ 28

13 Data Communication Problems .....................................................................29

14 Software Problems ..........................................................................................30

15 Revision History ..............................................................................................31

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Trouble Shooting Guide, Mechanical

1 General

This document outlines the mechanical repairs that should be made in an attempt to fix the common failures that are seen in the field. To gain a complete understanding of how to test and repair a specific failure, this document should be used in conjunction with the Test Instructions, Mechanical and the Working Instructions, Mechanical.

1.1 Service functions in the software

The service menu will be accessed with the following key combination. Use the joystick.

⇒*⇐⇐*⇐*

They are as follows:

Service info

Service tests

Text labels

The phones software has a built in service functionality that allows you to test some of the phones functions. (See point 2 above) It looks like this:

Main display LED/illumination Keyboard Speaker Earphone Microphone Vibrator Camera Real time clock Total call time

NOTE: Different names may occur depending on language setting and customization.

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1.2 Misuse and other no warranty issues

Misuse is not covered by warranty. This chapter will explain what’s not covered by warranty. Phones that have been exposed to misuse will not be covered by warranty.

This means: if it is possible to repair the phone, the customer will have to pay for the repair. SEMC will not allow any of these phones to be claimed into WCMS. Some local perspectives may interfere with this. Please reference to local directives.

1.2.1 Action

Make a general visual inspection for misuse.

Below are some examples of what is not covered by warranty.

Front window broken

due to misuse.

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LCD cracked due to

drop.

Clear scratches Mark after drop Corrosion components

on the PCB.

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Corrosion components on

Corrosion components on the

the PCB.

Components around system

connector damaged by liquid

1.2.2 Liquid damage sticker

In the phone there is placed a sticker that can give you a hint to see if the phone is damage by liquid or not. This sticker is located near the SIM reader (Fig. 1.2.1) and it is possible to see it without disassemble the phone.

PCB.

SIM reader damaged by

liquid.

System connector pad(s)

damaged by liquid

System connector damaged by

liquid

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Fig. 1.2.1

On the pictures below you will see the different between a sticker that has been in contact with liquid (Fig. 1.2.3) and with one that hasn’t (Fig. 1.2.2).

This sticker is ok This sticker is not

1.2.3 Action

Make a general visual inspection for misuse, corrosion or oxidation from liquid damage. No further action should be taken for a liquid damaged phone. Handle the unit according to local directives.

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ok

Fig. 1.2.2 Fig. 1.2.3

The white sticker that has been in contact with liquid turns into a red or pink sticker. In this case you should check the phone for liquid damage

(See point 1.1.1)

.

Note: There must be clear marks after liquid on the PCB before rejecting the phone for repair.

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2 Appearance Problems

Problem Area Items to Check Repair Action Reference Image

Appearance

Visually inspect the cosmetic quality of all user viewable surfaces

• If dirty – Clean parts as necessary.

• If unacceptably scratched or damaged

– Replace damage parts as necessary.

NOTE: Misuse is not covered by warranty. Refer to chapter 1.2

Visually inspect all keys

• If dirty – Clean parts as necessary.

• If unacceptably scratched or damaged

– Replace damaged parts as necessary.

NOTE: Misuse is not covered by warranty. Refer to chapter 1.2

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Problem Area Items to Check Repair Action Reference Image

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Visually inspect for improper gap between seams

• Reassemble or replace damaged parts as necessary.

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3 Network/Signal Problems

Problem Area Items to Check Repair Action Reference Image

No Signal or Poor Signal

Before proceeding ! Perform a flash upgrade.

Visually inspect SIM holder

Visually inspect antenna contact pads

• If dirty or oxidized – Clean it.

• If damaged – Send to an electrical

repair location.

• If dirty or oxidized – Clean the pads and replace the frame (B cover).

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Problem Area Items to Check Repair Action Reference Image

Visually inspect antenna

• If dirty or oxidized – Replace the frame (B cover).

• If damaged – Replace the frame (B cover).

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If the issue has not been resolved !

• Handle the unit according to local directives.

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Problem Area Items to Check Repair Action Reference Image

No signal when using external antenna (ex. Hands free in car).

Connect the phone to a handsfree car kit connected with external antenna.

Visually inspect the antenna bar on the phone.

If the issue has not been resolved !

• If no or only very less signal – Push the middle pin of the ext. antenna connector a few times.

Note: Be gently it might damage the

connector.

• Handle the unit according to local directives.

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4 On/Off Problems

Problem Area Items to Check Repair Action Reference Image

Power On problems

Check whether the phone vibrates 10 to 15 seconds after pressing the power key and whether the keypad illuminates

• If activation of the vibrator or keypad are detected, refer to the “Display Problems” chapter 7

Before proceeding !

Visually inspect contact pads on battery

Visually inspect battery connector

• Perform a flash upgrade.

• If dirty or oxidized – Clean pads.

• If damaged – Replace the battery.

• If dirty or oxidized – Clean it.

Note: Be gentle do not bend or damage the gold surface on connector pin’s

• If damaged – Send to an electrical repair location.

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Problem Area Items to Check Repair Action Reference Image

Visually inspect the power key

If the issue has not been resolved !

• If damaged – Replace it.

• Handle the unit according to local

directives.

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5 Audio Problems

Problem Area Items to Check Repair Action Reference Image

Microphone:

Before proceeding !

• Perform a flash upgrade and a setting reset.

Visually inspect the microphone’s external port

If the issue has not been resolved !

• If clogged - Clean or replace frame (B cover).

• Replace the microphone

• Handle the unit according to local

directives.

Receiver:

No sound or poor

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Before proceeding !

• Perform a flash upgrade and a setting reset.

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Problem Area Items to Check Repair Action Reference Image

quality sound

Visually inspect receiver’s external port

• If clogged – Clean or replace Front cover.

Visually inspect receiver’s dust cloth

Visually inspect the audio cover

Visually inspect the pogo pins

If the issue has not been resolved !

• If dirty or damaged – Replace front cover.

• If damaged – replace it.

• If missing or damaged – Replace

them.

• Replace receiver.

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Problem Area Items to Check Repair Action Reference Image

If the issue has not been resolved !

• Handle the unit according to local directives.

Speaker:

No sound or poor quality sound

Before proceeding !

Visually inspect speaker’s external port

Visually inspect the speaker’s dust cloth

• Perform a flash upgrade and a setting reset.

• If clogged – Clean it.

• If dirty or damaged – frame (B cover).

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Problem Area Items to Check Repair Action Reference Image

Visually inspect the audio cover

• If damaged – replace it.

Visually inspect the pogo pins

• If missing or damaged – Replace them.

If the issue has not been resolved !

• Replace loudspeaker.

If the issue has not been resolved !

• Handle the unit according to local directives.

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6 Key Problems

Problem Area

Keyboard:

A key on the keyboard is not functioning or is intermittent

Items to Check

Visually inspect for debris between keypad and dome sheet and for damage to the keypad and the dome sheet.

Repair Action

• If dirty – Clean both parts.

• If damaged - Replace keypad and/or

dome sheet as necessary.

Reference Image

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Problem Area

Items to Check

If the issue has not been resolved !

Repair Action

• Replace the dome sheet, if it has not already been replaced.

Reference Image

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If the issue has not been resolved !

• Handle the unit according to local directives.

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Problem Area

Side keys

Items to Check

Visually inspect for damage to the side keys

Repair Action

• If damaged - Replace keys as necessary.

Reference Image

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If the issue has not been resolved !

• Handle the unit according to local directives.

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7 Display Problems

Problem Area

LCD problem

Items to Check

Check whether the phone vibrates 10 to 15 seconds after pressing the power key and whether the keypad illuminates

Before proceeding !

If only background illuminates and no text or picture in the display.

Visually inspect whether the LCD flex film is properly connected to its connector on the PCB

Repair Action

• If activation of the vibrator are not detected, refer to the On/Off

Problems” chapter 4

• Perform a flash upgrade and a setting reset.

• Do software update content refresh.

• Note: This problem will not be solved

be a regular software update.

• Note: Software Update Content Refresh will erase all user data.

• If improperly connected – Re-establish proper connection.

Reference Image

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Problem Area

Items to Check

If the issue has not been resolved !

Repair Action

• Replace the LCD.

8 Illumination Problems

Reference Image

Problem Area

Keys:

The entire keypad or a portion of the keypad does not illuminate.

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Items to Check

Before proceeding !

Visually inspect the dome sheet.

If the issue has not been resolved !

Repair Action

• Perform a flash upgrade and a setting reset.

• If damaged – Replace it

• Replace the dome sheet.

Reference Image

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Problem Area

Items to Check

If the issue has not been resolved !

Repair Action

• Handle the unit according to local directives.

Reference Image

LCD

Before proceeding !

Visually inspect whether the LCD flex film is properly connected to its connector on the PCB

If issue has not been resolved !

• Perform a flash upgrade and a setting reset.

• If improperly connected – Re-establish proper connection.

• Replace the LCD.

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If the issue has not been resolved !

• Handle the unit according to local directives.

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9 Alert Problems

Problem Area

Vibrator:

Speaker:

No sound or poor quality sound

Items to Check

Before proceeding !

Visually inspect the vibrator pads on the PCB

Visually inspect the vibrator

Before proceeding !

Visually inspect speaker’s external port

Repair Action

• Perform a flash upgrade and a setting reset.

• If dirty or oxidized – Clean them.

• If dirty or oxidized – Replace it.

• If damaged – Replace it.

• Perform a flash upgrade and a setting

reset.

• If clogged – Clean it.

Reference Image

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Problem Area

Items to Check

Visually inspect the speaker’s dust

Repair Action

• If dirty or damaged – frame (B cover).

cloth

Visually inspect the audio cover

• If damaged – replace it.

Reference Image

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Visually inspect the pogo pins

If the issue has not been resolved !

• If missing or damaged – Replace them.

• Replace loudspeaker.

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10 SIM Problems

Problem Area

SIM undetected (Insert SIM)

Unit indicates an incorrect SIM is inserted (Insert correct SIM)

Items to Check

Inspect SIM holder

If the issue has not been resolved !

Check whether the phone is locked to a particular carrier and whether the correct carrier’s SIM is being used

If the issue has not been resolved !

Repair Action

• If dirty or oxidized – Clean.

• If damaged – Send to an electrical

repair location.

• Handle the unit according to local directives.

• Use Correct Carrier SIM or test SIM.

• Handle the unit according to local

directives.

Reference Image

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11 Charging/Capacity Problems

Problem Area

Battery will not charge

Items to Check

Visually inspect the contact pads of the battery

Visually inspect the system connector

Visually inspect the battery connector

Repair Action

• If dirty or oxidized – Clean.

• If damaged – Replace battery.

• If dirty, oxidized or damaged – Clean

or replace.

NOTE: Misuse is not covered by warranty. Refer to chapter 1.2

• If dirty or oxidized – Clean.

• If damaged – Send to an electrical

repair location.

Reference Image

-

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Battery looses charge quickly/ standby time seems short

Before proceeding !

NOTE: Some features noticeably reduce the amount of standby time if they are turned on. Some examples

• Perform a flash upgrade and a setting reset.

are the back light (when on all the time and), Bluetooth and infrared.

If the issue has not been resolved !

• Replace battery.

• Handle the unit according to local

directives.

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12 Camera Problems

Problem Area Items to Check Repair Action Reference Image

Camera

Lines, marks, blurred or discolored picture

Visually inspect the camera lens

Visually inspect whether the camera is properly connected to its socket on the PCB.

• If scratched or damaged – Replace the camera

• If improperly connected – Re-establish proper connection.

Will not capture an image

If the issue has not been resolved !

Visually inspect for damage to the camera key

If the issue has not been resolved !

• Replace the camera.

• If damaged - Replace the camera key

if necessary.

• Replace camera.

If the issue has not been resolved !

• Handle the unit according to local directives.

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13 Data Communication Problems

Problem Area Items to Check Repair Action Reference Image

Will not connect with a functional IR device

Before proceeding !

Visually inspect the IRDA window for dirt, scratches, and damage

• Perform a flash upgrade and a setting reset.

• If dirty – Clean it.

• If damaged – Replace it.

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If the issue has not been resolved !

• Handle the unit according to local directives.

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14 Software Problems

• If there are problems with the response of the keypad commands, or spelling errors in the menu, if they are not related to mechanical damage, make a master reset and flash the phone with the latest software from EMMA II or III.

• Checking the software revision can be done in the Service info, see chapter Service functions in the software. Choose: Service info / SW information. The Software revision and date will be shown in the display.

Note: Do a SW upgrade before sending the unit to a higher level. Do not

If the failure still occurs, handle the unit according to the local directives.

scrap a phone that hasn’t been upgraded.

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15 Revision History

Rev. Date Changes / Comments

A 2006-06-16 First release

B 2006-10-22 Chapter Display Problems updated

C 2006-11-10 Due to system problem. No changes made on content.

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Ericsson FALLAS K310 Diagram

Specifications and Main Features

Frequently Asked Questions

User Manual