Sony Ericsson D750i User manual

D750i, K758c, W800 and W700 Working Instructions -
Mechanical
3/00021-1/FEA 209 544/95 G
Company Internal
© Sony Ericsson Mobile Communications AB
Working Instructions -Mechanical
Applicable for D750i, K758c, W800 and W700
Contents
1 Read this first!..............................................................................................3
2 Introduction..................................................................................................4
3 Repair actions..............................................................................................5
3.1 Battery Cover & Battery.................................................................................6
Battery Cover & Battery continued......................................................................7
3.2 Antenna Cover ..............................................................................................8
Antenna Cover continued....................................................................................8
Antenna Cover continued....................................................................................9
3.3 Front............................................................................................................10
Front continued .................................................................................................11
Front continued .................................................................................................12
3.4 Keyboard.....................................................................................................13
3.5 Plastic Carrier..............................................................................................14
Plastic Carrier continued...................................................................................15
3.6 LCD ............................................................................................................17
LCD continued...................................................................................................18
3.7 PBA ............................................................................................................19
PBA continued...................................................................................................20
PBA continued...................................................................................................21
3.8 Camera........................................................................................................22
3.9 Antenna.......................................................................................................23
3.10 Camera Flex..............................................................................................24
3.11 Speaker Box..............................................................................................25
3.12 System Connector.....................................................................................26
3.13 Vibrator......................................................................................................27
3.14 Bluetooth Antenna.....................................................................................28
3.15 IrDA Window .............................................................................................28
3.16 On/Off Key.................................................................................................29
3.17 Volume Key...............................................................................................29
3.18 Music Player Key.......................................................................................30
3.19 Camera Key ..............................................................................................30
3.20 Frame........................................................................................................31
3.21 Camera Gasket.........................................................................................31
3.22 Tape, MS Duo...........................................................................................32
3.23 Support Pad, LCD.....................................................................................32
3.24 Camera Flex Pad, upper...........................................................................33
3.25 Camera Flex Pad (upper) & Camera BTB tape.........................................34
Camera Flex Pad (upper) & Camera BTB tape continued................................35
3.26 Joystick Button..........................................................................................36
3.27 Keyboard Foil............................................................................................37
3.28 Ground Springs.........................................................................................38
3.29 Spacer, board-to-board connector ............................................................39
3.30 Tape, plastic carrier..................................................................................39
3.31 Liquid Intrusion Indicator...........................................................................40

D750i, K758c, W800 and W700 Working Instructions - Mechanical
3/00021-1/FEA 209 544/95 G
Company Internal
© Sony Ericsson Mobile Communications AB 2(43)
3.32 Memory Card Rubber Lid..........................................................................41
3.33 Plug, external antenna ..............................................................................41
4 Label ...........................................................................................................42
5 Revision History ........................................................................................43

D750i, K758c, W800 and W700 Working Instructions - Mechanical
3/00021-1/FEA 209 544/95 G
Company Internal
© Sony Ericsson Mobile Communications AB 3(43)
1 Read this first!
After reading section 2 ‘Introduction’ and the first page of section 3 ‘Repair Actions’,
do as follows when a mechanical part needs to be replaced:
•Search for the part name on the contents page and go to the page number
where the instruction is found
•Disassemble the phone as far as needed by moving to the instructions stated as
e.g. Follow the Removal instructions of sections 3.1 – 3.6
•Carry out the actual repair action as described
•Assemble the phone by moving to the instructions stated as
e.g. Follow the Assembly instructions of sections 3.6 – 3.1 (pls. note the reverse order)
When watching the document off-line (after downloading
and extract the ZIP-file), most of the Removal and
Assembly headings are blue-coloured and underlined:.
By clicking on such a heading, a Flash Player window
opens, showing a video clip of the actual
removal/assembly.
The flash movie can be controlled from the keyboard by
holding down the Ctrl-key and pressing another key as
follows:
- Start and Stop: Ctrl – Enter
- Rewind to start position: Ctrl – R
- Move one small step forward: Ctrl – right arrow
- Move one small step back: Ctrl – left arrow
If your computer is set up to show Flash movies in an
Internet Explorer window, the movies will most likely be full
size, resulting in poor picture quality.
To shrink the video window to its proper size, drag the
bottom right corner of the Internet Explorer window until
the movie is shown without blurs and edges, which occurs
when the movie window is approx. 12 x 9 cm (indicated by
the red frame in the adjacent picture).
However, it is recommended to have your computer set up
to have the Flash movies played by the Flash Player
application.
NOTE: Flash Player ver. 6 or later must be installed on the computer.
The Flash Player can be downloaded free of charge from www.macromedia.com.

D750i, K758c, W800 and W700 Working Instructions - Mechanical
3/00021-1/FEA 209 544/95 G
Company Internal
© Sony Ericsson Mobile Communications AB 4(43)
2 Introduction
Special Tools
No new special tools are introduced but a few other
Sony Ericsson tools are required:
•NTZ 112 459 Torque screwdriver (or equivalent)
•NTZ 112 288 Torx bit no. 6
•NTZ 112 1052 Phillips bit
•NTZ 112 521 Flexfilm assembly tool
•NTZ 112 302/2 Front opening tool
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-gloves (cotton gloves)
•ESD-wristband
Adhesives
Use a dentist hook or a blunt pair of tweezers to remove old adhesives.
If necessary, clean the surface with isopropyl alcohol before attaching new adhesives.
Caution
Keep all contact surfaces clean of dirt and hand grease.

D750i, K758c, W800 and W700 Working Instructions - Mechanical
3/00021-1/FEA 209 544/95 G
Company Internal
© Sony Ericsson Mobile Communications AB 5(43)
3 Repair actions
FRONT & REAR VIEWS
PRECAUTIONARY ACTIONS
Turn off the phone!
Check that there is no memory stick inside the phone!
Can be removed without gloves.

D750i, K758c, W800 and W700 Working Instructions - Mechanical
3/00021-1/FEA 209 544/95 G
Company Internal
© Sony Ericsson Mobile Communications AB 6(43)
3.1 Battery Cover & Battery
REMOVAL
Remove the battery cover with your hand.
Force the battery cover to slide from its locked position
towards the end of the phone.
Slide down the battery cover completely and remove it.
Remove the battery from the phone with your fingers.
Lift the battery up to release it.
If not released, turning the phone around at the same
time will make it become released!
Remove the battery from the phone with your fingers.

D750i, K758c, W800 and W700 Working Instructions - Mechanical
3/00021-1/FEA 209 544/95 G
Company Internal
© Sony Ericsson Mobile Communications AB 7(43)
Battery Cover & Battery continued
ASSEMBLY
Slide the battery into the frame cavity with your fingers
until it is secured in its proper position.
Start at the bottom and slide the battery cover onto the
phone.
Push with your thumb on the battery cover until it is
completely closed.

D750i, K758c, W800 and W700 Working Instructions - Mechanical
3/00021-1/FEA 209 544/95 G
Company Internal
© Sony Ericsson Mobile Communications AB 8(43)
3.2 Antenna Cover
REMOVAL
Follow the Removal instructions of section 3.1
Remove the two screws by using bit NTZ 112 1052
(Phillips bit).
Removed screws cannot be reused and must be
scrapped!
Be careful not to scratch the antenna cover and the
frame with the guitar pick!
The camera lid has to be opened before the antenna
cover is removed from the frame (3, picture below)!
Open the phone with the guitar pick by starting at pos. 1.
It will be easier to insert the guitar pick between the
antenna cover and the frame if you at the same time bend
the cover slightly upwards with your thumb (2).
Gently move the guitar pick along the gap both ways (4)
until the antenna cover is loose on all sides.
Be careful not to scratch/damage the antenna cover with
the guitar pick where the two different plastics meet
(indicated by arrows)!
If necessary, open up with the guitar pick on the opposite
side (5).

D750i, K758c, W800 and W700 Working Instructions - Mechanical
3/00021-1/FEA 209 544/95 G
Company Internal
© Sony Ericsson Mobile Communications AB 9(43)
Antenna Cover continued
Be careful not to damage the antenna cover and the
frame as they become separated!
Gently lift the cover in the loose end (6) and then
slide/wiggle it forward in the arrow direction (7) until it can
be removed.
ASSEMBLY
The camera lid has to be open when the antenna cover is
assembled to the frame!
Place the antenna cover over the frame starting at the top
and then snap them together.
Check that the antenna cover is properly assembled,
i.e. no gaps along the sides!
If there still is a gap somewhere, gently press the two
halfs together with your fingers!
Close the camera lid.
Apply 9 Ncm (
± 2 Ncm) torque for the screws by using
the bit NTZ 112 1052 (Phillips bit)!
Tighten two new screws through the antenna cover into
the frame.
Follow the Assembly instructions of section 3.1

D750i, K758c, W800 and W700 Working Instructions - Mechanical
3/00021-1/FEA 209 544/95 G
Company Internal
© Sony Ericsson Mobile Communications AB 10(43)
3.3 Front
REMOVAL
Follow the Removal instructions of section 3.1 – 3.2
Remove the two screws at the bottom of the phone by
using NTZ 112 288 (torx bit no. 6).
Removed screws cannot be reused and must be
scrapped!
Be most careful when sliding the guitar pick where the
frame hooks secure the front!
Be careful not to scratch the phone with the guitar pick!
Open the phone with the guitar pick, starting at the
memory card rubber lid.
Then gently move the guitar pick along the gap both ways
until the front is loose on all sides.
If necessary do the same thing on the opposite side.

D750i, K758c, W800 and W700 Working Instructions - Mechanical
3/00021-1/FEA 209 544/95 G
Company Internal
© Sony Ericsson Mobile Communications AB 11(43)
Front continued
When separating the front from the frame you have to be
most careful not to damage these parts and in particular
avoid damage to the front caused by the top hook (1) of
the frame!
Do not bend the front to much apart from the frame to
avoid damages to the front caused by the top hook!
Sometimes the keyboard will fall out when the front is
removed.
Be careful not to damage the front and the frame as they
become separated!
Sometimes it demands quite a lot of force to remove the
front!
Wiggle the front gently side to side while pulling the front
away from the frame.

D750i, K758c, W800 and W700 Working Instructions - Mechanical
3/00021-1/FEA 209 544/95 G
Company Internal
© Sony Ericsson Mobile Communications AB 12(43)
Front continued
ASSEMBLY
Remove the inside protection (new front only)!
Do not to scratch the glass with the tweezers!
Use air blow equipment to clean the front glass
Make sure the keyboard is in its proper position!
Place the front at the top over the frame.
Press the front forward until it snaps onto the top hook.
Then fold down the front against the frame and start to
snap them together.
Gently press with your fingers around the front.
Make sure that there are no gaps around the phone!
If there still is a gap somewhere, gently press the two
halfs together with your fingers!
Apply 18 Ncm torque for the screws using
NTZ 112 288 (torx bit no.6)!
Tighten two new screws in the frame cavities.
Follow the Assembly instructions of section 3.2 – 3.1

D750i, K758c, W800 and W700 Working Instructions - Mechanical
3/00021-1/FEA 209 544/95 G
Company Internal
© Sony Ericsson Mobile Communications AB 13(43)
3.4 Keyboard
REMOVAL
Follow the Removal instructions of section 3.1 – 3.3
Remove the keyboard by hand or tweezers.
ASSEMBLY
Make sure the keyboard is placed in its proper position
by using the guide peg on the keyboard and the guide
hole on the keyfoil!
Place the keyboard onto the keyfoil.
Follow the Assembly instructions of section 3.3 – 3.1

D750i, K758c, W800 and W700 Working Instructions - Mechanical
3/00021-1/FEA 209 544/95 G
Company Internal
© Sony Ericsson Mobile Communications AB 14(43)
3.5 Plastic Carrier
REMOVAL
Follow the Removal instructions of section 3.1 – 3.4
Be careful not to damage the PBA and the plastic carrier
with the opening tool!
With the front opening tool, gently release the plastic
carrier (not only the metal plate) from the frame.
If necessary, do the same thing on the opposite side.
Bend/lift (1) the plastic carrier no more than 2 mm
otherwise it might break and damage may occur to the
board-to-board connector (2)!
Gently bend/lift the plastic carrier until it becomes free
from the PBA using a blunt pair of tweezers (1).
Be most careful when removing the keyfoil board-to-
board connector with the flexfilm assembly tool!
Disconnect the keyfoil flexfilm board-to-board connector
by using the flexfilm assembly tool.
Be careful when removing the plastic carrier!
Lift the plastic carrier straight up and away from the frame.

D750i, K758c, W800 and W700 Working Instructions - Mechanical
3/00021-1/FEA 209 544/95 G
Company Internal
© Sony Ericsson Mobile Communications AB 15(43)
Plastic Carrier continued
ASSEMBLY
Remove the protection tape (1), (new plastic carrier only).
Otherwise assemble a new adhesive on the plastic carrier.
Assemble the keyfoil and metalplate to the plastic carrier.
Gently bend the keyfoil flexfilm (2) underneath the
plastic carrier to prevent it from getting squeezed!
Be careful not to damage the keyfoil flexfilm (3) when
sliding the plastic carrier into the frame!
Press and snap the plastic carrier onto the frame.
Be careful not to damage the keyfoil flexfilm!
Make sure the board-to-board connector on the PBA has
not become broken!
Gently flip up the keyfoil and metal plate to the right (4).
Connect the keyfoil flexfilm board-to-board connector to
the PBA (5) with your fingers or with the flexfilm assembly
tool.
Note!
If there is a problem with the camera, place a conductive
pad in the marked hole (6)

D750i, K758c, W800 and W700 Working Instructions - Mechanical
3/00021-1/FEA 209 544/95 G
Company Internal
© Sony Ericsson Mobile Communications AB 16(43)
Place the pad with the adhesive pointing downwards.
Make sure the pad is within the hole and stick up above
face of plastic carrier.
Gently fold down the keyfoil and metal plate (6) onto the
plastic carrier.
Make sure the keyfoil is correctly mounted against the
two stops (7) on the plastic carrier!
Follow the Assembly instructions of section 3.4 – 3.1

D750i, K758c, W800 and W700 Working Instructions - Mechanical
3/00021-1/FEA 209 544/95 G
Company Internal
© Sony Ericsson Mobile Communications AB 17(43)
3.6 LCD
REMOVAL
Follow the Removal instructions of section 3.1 – 3.5
Be careful not to damage the LCD flexfilm and the board-
to-board connector with the tweezers!
Disconnect the camera flexfilm board-to-board connector
by lifting upwards with the flexfilm assembly tool.
Remove the two screws using bit NTZ 112 288 (torx bit
no. 6) at the top of the LCD carrier.
Removed screws cannot be reused and must be
scrapped!
When handling the LCD, be careful not to touch the
display glass at any time!
Be careful not to damage the LCD flexfilm with the
tweezers!
Gently lift the LCD with your fingers or with the flexfilm
assembly tool.

D750i, K758c, W800 and W700 Working Instructions - Mechanical
3/00021-1/FEA 209 544/95 G
Company Internal
© Sony Ericsson Mobile Communications AB 18(43)
LCD continued
ASSEMBLY
Remove the LCD protection foil (new LCD only)!
Gently place the LCD with your fingers to its proper
position by using the frame guide peg (1).
Apply 18 Ncm torque for the screws using
NTZ 112 288 (torx bit no. 6)!
Tighten two new screws into the frame cavities.
Be careful not to damage the LCD flexfilm!
Make sure the board-to-board connector on the PBA has
not become broken!
Connect the camera flexfilm board-to-board connector to
the PBA with your fingers or with the flexfilm assembly
tool.
Follow the Assembly instructions of section 3.5 – 3.1

D750i, K758c, W800 and W700 Working Instructions - Mechanical
3/00021-1/FEA 209 544/95 G
Company Internal
© Sony Ericsson Mobile Communications AB 19(43)
3.7 PBA
REMOVAL
Follow the Removal instructions of section 3.1 – 3.6
Be careful not to damage the camera flexfilm and the
board-to-board connector with the tweezers!
Disconnect the camera flexfilm board-to-board connector
by lifting upwards with the flexfilm assembly tool.
Be careful not to damage the camera flexfilm and the
board-to-board connector with the tweezers!
Disconnect the camera flexfilm board-to-board connector
by lifting upwards with the flexfilm assembly tool.
Use the front opening tool to separate the PBA from the
frame.
Two frame snap fit hooks, located in the middle section,
are to be released.
Place the opening tool between the PBA and the frame
and turn the tool until the PBA is released.
Place the front opening tool as shown (1).
Do the same thing on the opposite side (2).
Do not bend the PBA too much upwards!
To remove the PBA, lift the top of the PBA up and away
from the frame as high as it takes until it can be easily
moved.

D750i, K758c, W800 and W700 Working Instructions - Mechanical
3/00021-1/FEA 209 544/95 G
Company Internal
© Sony Ericsson Mobile Communications AB 20(43)
PBA continued
With the PBA in the raised position, wiggle the board side
to side while pulling it away from the system connector.
The system connector may become loose when the PBA
is removed!
Be careful not to damage the camera flexfilm!
Gently slide the camera flexfilm trough the hole of the
PBA.
ASSEMBLY
Be careful not to damage the camera flexfilm!
Make sure the board-to-board connector on the camera
has not become broken!
Gently fold the flexfilm to the left (1).
Connect the upper camera flexfilm board-to-board
connector to the camera with your fingers or with the
flexfilm assembly tool.
Be careful not to damage the camera flexfilm!
Gently slide the camera flexfilm trough the hole of the
PBA.