Sony-Ericsson W850 Service Manual WORKING INSTRUCTION

Working Instruction, Mechanical

Applicable for W850i

CONTENTS

1 Introduction .............................................................................. 3

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

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

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

1.4 Recurrent Repair Actions ........................................................ 5

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

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

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

2.1.2 Upper Rear Lid Assembly .....................................................8

2.1.3 Upper Front Assembly Complete ..........................................9

2.1.4 Dividing the Phone into Upper and Lower half’s.................. 11

2.1.5 Numeric Key Foil assembly................................................. 15

2.1.6 Lower Rear Cover Assembly (and Main PBA) ....................16

2.1.7 ESD Protection Sheet .........................................................17

2.1.8 LCD Module and Navigation Key Foil Assembly ................. 18

2.1.9 Lower Front Assembly, Upper Carrier Assembly and Slide

Mechanism.......................................................................... 19

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

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

3.2 Upper Rear Lid Assembly......................................................22

3.3 Upper Front Assembly Complete .........................................22

3.4 Numeric Key Foil Assembly..................................................22

3.5 Lower Rear Cover assembly ................................................. 22

3.6 ESD Protection Sheet ............................................................22

3.7 LCD Module ............................................................................22

3.8 Navigation Key Foil Assembly..............................................23

3.9 Lower Front Assembly, Upper Carrier Assembly and Slide

Mechanism..............................................................................23

3.10 External Antenna Plug Assembly.........................................24

3.11 IRDA Window..........................................................................25

3.12 Co-Brand Label....................................................................... 26

3.13 Tape Upper Rear Lid .............................................................. 27

3.14 Rubber Connector, Speaker Plate ........................................28

3.15 Keyboard Navigation .............................................................29

3.16 Ear Speaker............................................................................. 30

3.17 Water Indicator ....................................................................... 32

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3.18 Duo Lid ....................................................................................33

3.19 Keyboard Numeric .................................................................34

3.20 Microphone Grommet ............................................................ 35

3.21 Microphone .............................................................................36

3.22 Camera Key............................................................................. 37

3.23 Conductive Gasket.................................................................38

3.24 Tape for Slider Mechanism....................................................39

3.25 Damper for Lower Front (1) ................................................... 40

3.26 Damper for Lower Front (2) ................................................... 41

3.27 VGA Camera Gasket ..............................................................42

3.28 Camera Module (VGA) With Flex ..........................................43

3.29 Half- Half Flex with Components .......................................... 45

3.30 Adhesive Half to Half .............................................................46

3.31 Main Flex Assembly ............................................................... 47

3.32 Lower Damper for Upper Carrier Assembly ........................49

3.33 Protective Tape, Test Points ................................................. 50

3.34 Vibrator.................................................................................... 51

3.35 Volume Keys...........................................................................52

3.36 On/Off Key............................................................................... 53

3.37 BT Antenna .............................................................................54

3.38 System Connector..................................................................55

3.39 Dust Gasket, System Connector...........................................56

3.40 Insulation Label ...................................................................... 57

3.41 Flash Reflector .......................................................................58

3.42 LED-Flash Assembly..............................................................59

3.43 Loud Speaker Box Assembly................................................60

3.44 Camera Rubber....................................................................... 62

3.45 Shield Can Camera Module ................................................... 63

3.46 Camera Module 2M FF ........................................................... 64

3.47 LCD Tape................................................................................. 66

3.48 Slide Mechanism Protection Tape........................................67

3.49 Label 68

4 Reassembly ............................................................................ 69

4.1 Overview .................................................................................69

4.1.1 Upper Carrier Assembly, Slide Mechanism and Lower Front

Assembly............................................................................. 70

4.1.2 LCD Module Assembly and Navigation Key Foil Assembly. 73

4.1.3 ESD Protection Sheet .........................................................75

4.1.4 Lower Rear Cover Assembly (and Main PBA) ....................76

4.1.5 Reassembly of the Phones Upper and Lower half’s............77

Together with the Numeric Key Foil Assembly................................. 77

4.1.6 Upper Front Assembly Complete ........................................81

4.1.7 Upper Rear Lid Assembly ...................................................83

4.1.8 Battery and Battery Cover ................................................... 85

5 Revision history ..................................................................... 87

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Working Instruction, Mechanical

1 Introduction

W850i Black

W850i Black W850i White

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Working Instruction, Mechanical

1.1 Equipment

SPECIAL TOOLS

Requirements (no new tools):

• NTZ 112 459 Torque screwdriver (or equivalent)

• NTZ 112 288 Torx bit no. 6

• NTZ 112 1052 JCIS bit

• NTZ 112 1067 Camera tool

• NTZ 112 521 Flex film assembly tool

• NTZ 112 302/2 Front opening tool (Black or beige)

STANDARD TOOLS

The following tools have to be locally purchased:

• Dentist hook

• Blunt pair of tweezers

• Guitar pick

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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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:

• S

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

• K

EEP ALL CONTACT SURFACES CLEAN!

• B

E 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

• R

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

• N

EVER TOUCH THE DISPLAY GLASS!

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

• U

Remove the memory stick!

Switch off the phone!

1.3 Adhesives

Use a dentist hook and/or the tweezers to remove old adhesives. Clean the surface with isopropyl alcohol before attaching new adhesives.

1.4 Recurrent Repair Actions

How to open a board-to-board connector with the front opening tool.

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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

Start

Contents

page

DISASSEMBLY

2.1 Overview

The disassembly is done in the following sequence:

1. Battery Cover (a) and Battery (b)

2. Upper Rear Lid

3. Upper Front Assembly Complete

4. Numeric Key Foil Assembly

5. Lower Rear Cover Assembly

6. Main PBA

7. ESD Protection Sheet

8. LCD Module Assembly

9. Lower Front Assembly (a), Slide Mechanism (b) and Upper Carrier Assembly (c)

REASSEMBLY

Done

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2.1.1 Battery Cover Assembly and Battery

Press with your thumbs (sometimes quite hard) on the battery cover assembly until you get a gap.

Remove the battery cover assembly.

Start to remove the battery from the phone with your fingers. Lift up the battery in the bottom end to unleash it.

If not released, turning the phone around at the same time will make it become released.

Remove the battery completely from the phone with your fingers.

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2.1.2 Upper Rear Lid Assembly

DO NOT INSERT THE GUITAR PICK TO DEEP INTO THE PHONE!

Carefully insert the guitar pick in the middle of the upper rear lid assembly.

Continue to gently bend until the lid starts to become loose from the upper front assembly complete.

Move the plectrum along the gap (around the corner) until the lid is loose on this side.

Continue and do the same thing on the other side.

Remove the upper rear lid assembly completely.

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2.1.3 Upper Front Assembly Complete

Remove the two inside screws from the upper carrier assembly by using the NTZ 112 288 (torx bit no 6).

Replace the screw if it’s damaged otherwise it can be reused.

Use the front opening tool to bend and make the upper front assembly complete to start to become loose.

BE CAREFUL NOT TO BREAK THE FRONT!

Continue to bend further down on the upper front assembly complete until it’s loose on this side.

Start on the opposite side and do the same thing.

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Disassembly Instruction continued

BE CAREFUL NOT TO BREAK THE FRONT!

And again.

Gently fold down the upper front assembly complete and remove it.

Disassembled upper front assembly complete.

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eused

Working Instruction, Mechanical

2.1.4 Dividing the Phone into Upper and Lower half’s

BE CAREFUL NOT TO DAMAGE THE FLEX FILM!

Gently bend away the flex film a little bit with a flex film assembly tool.

Close the phone and remove the two inside screws from the lower front assembly by using the NTZ 112 288 (torx bit no

6).

Replace the screw if it’s damaged otherwise it can be r

Remove the two screws from the lower rear cover assembly by using the NTZ 112 288 (torx bit no 6).

Replace the screw if it’s damaged otherwise it can be reused.

.

Use the guitar pick to unsnap the Lower Front Cover from the Lower Rear Cover.

Use a guitar pick and gently move it along the side until the front is loose.

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Disassembly Instruction continued

DON’T BEND THE SIDE TO MUCH DOWNWARDS!

Now should the whole side have become loose.

Repeat the same procedure on the other side.

By the camera button insert the guitar pick until you get a gap.

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Working Instruction, Mechanical

Disassembly Instruction continued

SLIDE OUT THE PHONE!

B

E CAREFUL WITH THE HALF-HALF FLEX WITH COMPONENTS

(1) WHEN THE TWO HALF’S SEPARATES FROM EACH OTHER!

Divide the phone into two half’s.

SOMETIMES THE MICROPHONE GROMMET COMES LOOSE FROM

THE LOWER FRONT ASSEMBLY

- DON’T LOOSE IT!

B

E CAREFUL WITH THE FLEX FILM AND THE B T B CONNECTOR!

Gently bend with the front opening tool under the Numeric key foil assembly’s board to board connector like the picture shows until the connector become loose from the main PBA.

Do the same thing with the half-half flex with components board to board connector.

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Working Instruction, Mechanical

Disassembly Instruction continued

The phone is now divided into upper and lower half’s.

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2.1.5 Numeric Key Foil assembly

O

FTEN THE NUMERIC KEY FOIL ASSEMBLY BECOMES LOOSE

WHEN THE PHONE IS DIVIDED INTO TWO HALF

’S!

Remove the numeric key foil assembly with a blunt pair of tweezers or your fingers.

Removed numeric key foil assembly.

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Working Instruction, Mechanical

2.1.6 Lower Rear Cover Assembly (and Main PBA)

Start like this before removal of the lower rear cover assembly.

Gently bend with the front opening tool under the main PBA like the picture shows until the main PBA starts to become loose on this side of the lower rear cover assembly.

If necessary do the same thing on the other side.

Start to remove the main PBA. If necessary, wiggle the main PBA a little side to side while pulling it away from the lower front cover assembly.

Remove the main PBA completely from the lower rear cover assembly.

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Working Instruction, Mechanical

2.1.7 ESD Protection Sheet

Start like this before removal of the ESD protection sheet.

Use a blunt pair of tweezers to squeeze in between the ESD protection sheet and the upper carrier assembly until it’s become loose (if necessary bend a little).

Completely remove the ESD protection sheet with the tweezers.

Removed ESD protection sheet.

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Working Instruction, Mechanical

2.1.8 LCD Module and Navigation Key Foil Assembly

With the front opening tool gently bend until the navigation key foil assembly’s two board to board connectors (marked

with red) are loose.

BE VERY CAREFUL WITH THE LCD MODULE ASSEMBLY!

Lift the LCD module together with the navigation key foil assembly straight up

Do not ever touch the LCD glass surface.

Gently bend with the front opening tool under the LCD module board to board connector like the picture shows until the connector become loose from the navigation key foil assembly.

Removed LCD module and navigation key foil assembly.

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Working Instruction, Mechanical

2.1.9 Lower Front Assembly, Upper Carrier Assembly and Slide Mechanism

Remove the two screws from the lower front assembly by using the NTZ 112 1052 (JCIS bit).

Replace the screw if it’s damaged otherwise it can be reused.

Slide out the lower front assembly and remove it from the upper carrier assembly.

Remove the four screws from the upper carrier assembly by using the NTZ 112 1052 (JCIS bit).

Replace the screw with new ones.

Remove the slide mechanism from the upper carrier assembly.

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Working Instruction, Mechanical

Disassembly Instruction continued

Disassembled upper carrier assembly, slide mechanism and lower front assembly.

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Working Instruction, Mechanical

3 Replacements

Search for the part to be replaced on the Contents page and go to that instruction to be found in this Replacements section.

The instruction usually begins by directing you to the Disassembly section with a specification of the instructions you have to carry out in order to disassemble the phone as far as needed before the actual replacement.

Go back to this Replacements section and carry out the instruction. The instruction usually ends by directing you to the Reassembly section with a specification of the

instructions you have to carry out in order to reassemble the phone.

REPLACEMENTS

Start

Contents

page

DISASSEMBLY REASSEMBLY

Done

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3.1 Battery Cover

Follow the 2.1.1 Disassembly instructions! Prepare the new battery cover. Follow the 4.1.8 Reassembly instructions!

3.2 Upper Rear Lid Assembly

Follow the 2.1.1 – 2.1.2 Disassembly instructions! Prepare the new upper rear lid assembly. Follow the 4.1.7 – 4.1.8 Reassembly instructions!

3.3 Upper Front Assembly Complete

Follow the 2.1.1 – 2.1.3 Disassembly instructions!

Remove the keypad as described in 3.15 Keyboard Navigation. Prepare the new Upper front assembly Complete.

Attach a new name plate as described in 3.12 Co-Brand Label. Install the Keyboard Navigation as described in 3.15 Keyboard Navigation.

Follow the 4.1.6 – 4.1.8 Reassembly instructions!

3.4 Numeric Key Foil Assembly

Follow the 2.1.1 – 2.1.5 Disassembly instructions! Prepare the new Numeric Key Foil Assembly. Follow the 4.1.5 – 4.1.8 Reassembly instructions!

3.5 Lower Rear Cover assembly

Follow the 2.1.1 – 2.1.6 Disassembly instructions! Prepare the new Lower Rear Cover Assembly. Follow the 4.1.4 – 4.1.8 Reassembly instructions!

3.6 ESD Protection Sheet

Follow the 2.1.1 – 2.1.3, 2.1.7 Disassembly instructions! Prepare the new ESD Protection Sheet. Follow the 4.1.3, 4.1.6 – 4.1.8 Reassembly instructions!!

3.7 LCD Module

Follow the 2.1.1 – 2.1.3, 2.1.8 Disassembly instructions! Prepare the new LCD Module. Apply a new LCD tape on the LCD Module according to the 3.47 Replacement instructions! Follow the 4.1.2, 4.1.6- 4.1.8 Reassembly instructions!

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3.8 Navigation Key Foil Assembly

Follow the 2.1.1 – 2.1.8 Disassembly instructions! Prepare the new Navigation Key foil Assembly. Follow the 4.1.2 – 4.1.8 Reassembly instructions!

3.9 Lower Front Assembly, Upper Carrier Assembly and Slide Mechanism

Follow the 2.1.1 – 2.1.9 Disassembly instructions! Prepare the new Lower Front Assembly, Upper Carrier Assembly and slide mechanism. Follow the 4.1.1 – 4.1.8 Reassembly instructions!

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Working Instruction, Mechanical

3.10 External Antenna Plug Assembly

Follow the 2.1.1 Disassembly instructions!

Remove the external antenna plug assembly with a dentist hook.

Skip this section if you only disassemble the phone. Can be done without any previous disassembly

Assemble a new external antenna plug assembly with your fingers.

Follow the 4.1.8 Reassembly instructions!

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3.11 IRDA Window

Follow the 2.1.1 Disassembly instructions!

Start to remove the old IRDA window with a dentist hook.

Remove the IRDA window completely.

Press (quite hard) the new IRDA window into place with your fingers.

Correctly assembled IRDA window.

Follow the 4.1.8 Reassembly instructions!

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Working Instruction, Mechanical

3.12 Co-Brand Label

Gently remove the old co-brand label with a dentist hook.

Skip this section if you only disassemble the phone. Can be done without any previous disassembly!

Assemble a new co-brand label with a blunt pair of tweezers or by hand.

Keep the pressure on for a few seconds to secure a good fit.

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Working Instruction, Mechanical

3.13 Tape Upper Rear Lid

Follow the 2.1.1 – 2.1.2 Disassembly instructions!

Remove the old tape upper rear lid with a dentist hook.

Assemble a new (or two) tape upper rear lid with the help of a blunt pair of tweezers.

Follow the 4.1.7 – 4.1.8 Reassembly instructions!

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