Sony Ericsson Walkman W850i User manual

Working Instruction, Mechanical
3/000 21-1/FEA 209 544/104 C
Company Internal ©Sony Ericsson Mobile Communications AB
Working Instruction, Mechanical
Applicable for W850i
CONTENTS
1Introduction .............................................................................. 3
1.1 Equipment.................................................................................4
1.2 General cautions ......................................................................5
1.3 Adhesives .................................................................................5
1.4 Recurrent Repair Actions ........................................................5
2Disassembly ............................................................................. 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
3Replacements......................................................................... 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

Working Instruction, Mechanical
3/000 21-1/FEA 209 544/104 C
©Sony Ericsson Mobile Communications AB
2(87)
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
4Reassembly ............................................................................ 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
5Revision history ..................................................................... 87

Working Instruction, Mechanical
3/000 21-1/FEA 209 544/104 C
Company Internal ©Sony Ericsson Mobile Communications AB
1 Introduction
W850i Black
W850i Black W850i White

Working Instruction, Mechanical
3/000 21-1/FEA 209 544/104 C
Company Internal ©Sony Ericsson Mobile Communications AB
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

Working Instruction, Mechanical
3/000 21-1/FEA 209 544/104 C
Company Internal ©Sony Ericsson Mobile Communications AB
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!
•BE CAREFUL NOT TO DAMAGE ANY CONTACT SPRINGS!
•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 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.
Switch off
the phone!
Remove the
memory stick!

Working Instruction, Mechanical
3/000 21-1/FEA 209 544/104 C
Company Internal ©Sony Ericsson Mobile Communications AB
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.
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)
Start
Done
REPLACEMENTS
DISASSEMBLY REASSEMBLY
Contents
page

Working Instruction, Mechanical
3/000 21-1/FEA 209 544/104 C
Company Internal ©Sony Ericsson Mobile Communications AB
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.

Working Instruction, Mechanical
3/000 21-1/FEA 209 544/104 C
Company Internal ©Sony Ericsson Mobile Communications AB
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.

Working Instruction, Mechanical
3/000 21-1/FEA 209 544/104 C
©Sony Ericsson Mobile Communications AB
9(87)
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.

Working Instruction, Mechanical
3/000 21-1/FEA 209 544/104 C
©Sony Ericsson Mobile Communications AB
10(87)
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.

Working Instruction, Mechanical
3/000 21-1/FEA 209 544/104 C
©Sony Ericsson Mobile Communications AB
11(87)
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
eused
.
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.

Working Instruction, Mechanical
3/000 21-1/FEA 209 544/104 C
©Sony Ericsson Mobile Communications AB
12(87)
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.

Working Instruction, Mechanical
3/000 21-1/FEA 209 544/104 C
©Sony Ericsson Mobile Communications AB
13(87)
Disassembly Instruction continued
SLIDE OUT THE PHONE!
BE 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!
BE 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.

Working Instruction, Mechanical
3/000 21-1/FEA 209 544/104 C
©Sony Ericsson Mobile Communications AB
14(87)
Disassembly Instruction continued
The phone is now divided into upper and lower half’s.

Working Instruction, Mechanical
3/000 21-1/FEA 209 544/104 C
©Sony Ericsson Mobile Communications AB
15(87)
2.1.5 Numeric Key Foil assembly
OFTEN 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.

Working Instruction, Mechanical
3/000 21-1/FEA 209 544/104 C
©Sony Ericsson Mobile Communications AB
16(87)
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.

Working Instruction, Mechanical
3/000 21-1/FEA 209 544/104 C
©Sony Ericsson Mobile Communications AB
17(87)
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.

Working Instruction, Mechanical
3/000 21-1/FEA 209 544/104 C
©Sony Ericsson Mobile Communications AB
18(87)
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.

Working Instruction, Mechanical
3/000 21-1/FEA 209 544/104 C
©Sony Ericsson Mobile Communications AB
19(87)
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.

Working Instruction, Mechanical
3/000 21-1/FEA 209 544/104 C
©Sony Ericsson Mobile Communications AB
20(87)
Disassembly Instruction continued
Disassembled upper carrier assembly, slide mechanism
and lower front assembly.