Sony Ericsson C702 Troubleshooting Manual 2

Working Instruction, Mechanical

Applicable for C702, C702a & C702c

CONTENTS

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1 Introduction........................................

.....................................3

1.1 Equipment.....................................................................4

1.2 General cautions ..........................................................5

1.3 Adhesives......................................................................5

2 Disassembly............................................................................6

2.1 Overview........................................................................6

2.1.1 Battery Cover and Battery.....................................................7

2.1.2 Screw Cover Assembly.........................................................9

2.1.3 Frame Assembly .................................................................11

2.1.4 M2 Cover & Front Cover Assembly.....................................13

2.1.5 Speaker Box & Antenna Assembly......................................15

2.1.6 LCD Frame Assembly.........................................................17

3 Replacements........................................................................21

3.1 Battery Cover..............................................................22

3.2 Battery .........................................................................22

3.3 Screw Cover................................................................

3.4 Frame...........................................................................22

3.5 M2 Cover and Front Cover.........................................22

3.6 Speaker Box and Antenna.........................................22

3.7 LCD Frame ..................................................................22

3.8 Vibrator........................................................................23

3.9 Main Rubber Ring.......................................................24

3.10 Volume Key.................................................................25

3.11 Camera Key.................................................................26

3.12 On/Off Key...................................................................27

3.13 RF Hole Adhesive.......................................................28

3.14 BT Antenna .................................................................29

3.15 ESD Gasket .................................................................30

3.16 Main Keypad Cover ....................................................31

3.17 Co-Brand Label...........................................................33

3.18 Main Keypad ...............................................................34

3.19 Flash FPC....................................................................

3.20 Main Antenna..............................................................36

3.21 Keyboard.....................................................................

3.22 Receiver.......................................................................40

3.23 LCD Gasket .................................................................41

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Working Instruction, Mechanical

3.24 Sony Ericsson Icon ....................................................42

3.25 3.2 MP AF Camera ......................................................43

3.26 Speaker Box Gasket...................................................45

3.27 Receiver Gasket..........................................................46

3.28 Liquid Intrusion Indicator ..........................................47

3.29 Label ............................................................................48

4 Reassembly...........................................................................49

4.1 Overview......................................................................49

4.1.1 Speaker Box Assy & PCBA.................................................50

4.1.2 LCD frame Assy & PCBA....................................................51

4.1.3 Front Cover Assy.................................................................52

4.1.4 M2 Cover.............................................................................53

4.1.5 Frame Assy.........................................................................54

4.1.6 Screw Cover Assy...............................................................55

4.1.7 Battery & Battery Cover.......................................................56

5 Revision history....................................................................58

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Working Instruction, Mechanical

1 Introduction

C702

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Working Instruction, Mechanical

1.1 Equipment

SPECIAL TOOLS

Special tools:

• NTZ 122 459 Torque Screwdriver (or equivalent)

• NTZ 122 288 Torx Bits No. 6

• NTZ 112 1052 JCIS No. 0 Screw Bit

• NTZ 112 302/2 Front Opening Tool

• 1206-7115 Camera removal tool

• NTZ 112 590 Guitar Pick

• NTZ 122 521 Flex Film Assembly Tool

STANDARD TOOLS

Standard tools have to be locally purchased

• Dentist Hook

• ESD Tweezers

• Nylon Pointer

ESD EQUIPMENT

Protect the phone from ESD damages whenever it has been opened by using:

• ESD-Wristband

• ESD-Gloves

LABEL EQUIPMENT

The following special equipment is required when replacing or installing a new Label:

• Hot Air Flow Solder Station

• Zebra Printer connected to Computer

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Working Instruction, Mechanical

1.2 General cautions

The following cautions are considered to be generic for all phone models and will not be repeated in the Disassembly, Replacements and Reassembly sections:

• SWITCH OFF THE PHONE AND REMOVE ANY MEMORY STICK BEFORE THE START OF THE DISASSEMBLY!

• KEEP ALL CONTACT SURFACES CLEAN!

• BE CAREFUL WHEN USING TOOLS LIKE THE DENTIST HOOK, TWEEZERS, OPENING TOOLS, GUITAR PICK

ETC. TO AVOID SCRATCHES OR DAMAGES TO THE EXTERIOR AND INTERIOR PARTS OF THE PHONE!

E CAREFUL NOT TO DAMAGE ANY CONTACT SPRINGS!

• B

• REMEMBER TO REMOVE THE PROTECTION FOILS ON NEW PARTS SUCH AS THE FRONT COVER AND LCD!

• NEVER TOUCH THE DISPLAY GLASS!

• USE AIR BLOW EQUIPMENT TO KEEP THE FRONT WINDOW AND DISPLAY MODULE DUST FREE!

1.3 Adhesives

Use Dentist Hook and/or Tweezers to remove the old Adhesives. Clean the surface with isopropyl alcohol before attaching the new Adhesives.

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Start

Done

Working Instruction, Mechanical

2 Disassembly

When you are going to replace a part being listed in Replacements, the instruction of that section usually begins by directing you to this Disassembly section with a specification of the instructions you have to carry out in order to disassemble the phone as far as needed before returning to Replacements for the actual replacement.

REPLACEMENTS

Contents

page

DISASSEMBLY

2.1 Overview

The disassembly is done in the following sequence:

1. Battery Cover (a) Battery (b)

2. Screw Cover Assy

3. Frame Assy

4. M2 Cover

5. Front Cover Assy

6. Speaker Box & Antenna

7. LCD Frame Assy (a) PCBA (b)

REASSEMBLY

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Working Instruction, Mechanical

2.1.1 Battery Cover and Battery

Prepare to release the Battery Cover.

Use Nylon Pointer to turn the Latch anticlockwise.

Unlock the Latch as shown in picture.

Lift up the Battery Cover at the bottom end.

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Working Instruction, Mechanical

Battery continued

Grip the Battery at the bottom end using fingers.

Lift up the Battery at the bottom end and remove it.

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Working Instruction, Mechanical

2.1.2 Screw Cover Assembly

Slide the Camera Lens Cover.

Open the Camera Lens Cover using fingers.

OPEN THE CAMERA LENS COVER BEFORE STARTING DISASSEMBLY! OTHERWISE, THE CONTACT SPRINGS WILL BE DAMAGED DURING DISASSEMBLY!

Remove the two Screws using JCIS No.0 Screw Bit.

Insert Guitar Pick as shown in picture and unlatch the snap hooks along the left side of the Screw Cover Assy as shown by the arrow.

IF NECESSARY, SLIDE BACK AND FORTH UNTIL ALL HOOKS ARE

UNLATCHED!

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Working Instruction, Mechanical

Screw Cover Assembly continued

Repeat this at the right side.

Slide along the top to unlatch the snap hooks.

TAKE CARE WHEN REMOVING THE SCREW COVER THAT WATER

DOES FLOW OFF SCREW COVER INTO THE PHONE BACK COVER AREA!

Carefully lift up the Screw Cover Assy.

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Working Instruction, Mechanical

2.1.3 Frame Assembly

CHECK FIRSTLY IF THE M2 MEMORY STICK HAS BEEN

REMOVED BEFORE CONTINUING!

Use Torx bit no. 6 to remove the four screws.

Insert the Guitar Pick at the left bottom as shown in picture and slide along the side to unlatch the snap hooks.

IF NECESSARY, SLIDE BACK AND FORTH UNTIL ALL THE HOOKS

ARE UNLATCHED!

Repeat this for the left side.

Repeat this for the right bottom.

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Working Instruction, Mechanical

Frame Assembly continued

Repeat this for the right side.

Lift up the Frame Assembly.

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Working Instruction, Mechanical

2.1.4 M2 Cover & Front Cover Assembly

Push the M2 Cover using Front Opening Tool or fingers.

Pull out the M2 Cover using Flex Film Assembly Tool or fingers.

Insert the Nylon Pointer at the right side as shown in picture to loose the Core Unit from the Front Cover Assy.

Insert the Front Opening Tool at the left side as shown in picture to loosen the Core Unit from the Front Cover Assy.

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Working Instruction, Mechanical

Front Cover continued

Remove the Core Unit by lifting it up from the top as shown by the arrow.

Gently remove the Core Unit from the Front Cover.

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Working Instruction, Mechanical

2.1.5 Speaker Box & Antenna Assembly

Insert the Front Opening Tool to unlatch the right side hooks between the Speaker Box and the PCBA.

Insert Front Opening Tool to unlatch the right top hooks between the Speaker Box and the PCBA.

Insert Front Opening Tool to unlatch the left side hooks between the Speaker Box and the PCBA.

Lift up the Speaker Box from the PCBA.

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Working Instruction, Mechanical

Speaker Box & Antenna Assembly continued

Use the Front Opening Tool to unlatch the Flash FPC Connector as the arrow shows in the picture.

Gently remove the Speaker Box from the PCBA.

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Working Instruction, Mechanical

2.1.6 LCD Frame Assembly

Insert the Front Opening Tool to unlatch the LCD Connector as shown in the picture.

Insert the Front Opening Tool to release the right side hook between the PCBA and the LCD Frame.

Insert the Front Opening Tool to release the right top Hook between the PCBA and the LCD Frame.

Insert the Front Opening Tool to release the left bottom hook between the PCBA and the LCD Frame.

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Working Instruction, Mechanical

LCD Frame continued

Insert the Front Opening Tool to release the left middle hooks between the PCBA and the LCD Frame.

Insert the Front Opening Tool to release the top hooks between the PCBA and the LCD Frame.

Insert the Front Opening Tool to release the right middle hooks between the PCBA and the LCD Frame.

BE CAREFUL WHEN UNLATCHING THE LAST HOOK - THE LCD FRAME CAN JUMP OFF THE PCBA!

Insert the Front Opening Tool to release the left bottom hooks between the PCBA and the LCD Frame.

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