K750i & K750c Working Instructions Mechanical
Working Instructions - Mechanical
Applicable for K750i & K750c
Contents
1 Read this first!..............................................................................................2
2 Introduction.................................................................................................3
3 Repair actions ..............................................................................................4
3.1 Battery Cover & Battery................................................................................. 5
3.1 Battery Cover & Battery................................................................................. 5
3.2 Antenna Cover .............................................................................................. 7
3.3 Front.............................................................................................................. 9
3.4 Keyboard..................................................................................................... 12
3.5 Plastic Carrier.............................................................................................. 13
3.6 LCD 15
3.7 PBA 17
3.8 Camera........................................................................................................ 20
3.9 Antenna....................................................................................................... 21
3.10 Camera Flex.............................................................................................. 22
3.11 Speaker Box.............................................................................................. 23
3.12 System Connector..................................................................................... 24
3.13 Vibrator...................................................................................................... 25
3.14 Bluetooth Antenna..................................................................................... 26
3.15 IrDA Window ............................................................................................. 26
3.16 On/Off Key................................................................................................. 27
3.17 Volume Key............................................................................................... 27
3.18 Music Player Key....................................................................................... 28
3.19 Camera Key .............................................................................................. 28
3.20 Frame........................................................................................................ 29
3.21 Camera Gasket ......................................................................................... 29
3.22 Tape, MS Duo ........................................................................................... 30
3.23 Support Pad, LCD ..................................................................................... 30
3.24 Camera Flex Pad, upper ........................................................................... 31
3.25 Pressure Pad, camera connector.............................................................. 31
3.26 Pressure Pad, mini T-top........................................................................... 32
3.27 Joystick Button .......................................................................................... 33
3.28 Keyboard Foil ............................................................................................ 34
3.29 Ground Springs ......................................................................................... 35
3.30 Spacer, board-to-board connector ............................................................ 36
3.31 Tape, plastic carrier................................................................................... 36
3.32 Liquid Intrusion Indicator ........................................................................... 37
3.33 Memory Card Rubber Lid .......................................................................... 38
3.34 Plug, external antenna .............................................................................. 38
3.35 Co-brand Inlay........................................................................................... 39
3.36 Mount camera flex film pads ..................................................................... 40
4 Label ...........................................................................................................41
5 Revision History ........................................................................................42
3/00021-1/FEA 209 544/94 B
Company Internal © Sony Ericsson Mobile Communications AB
K750i & K750c Working Instructions Mechanical
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.
When watching the movies on-line as well as off-line, 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.
3/00021-1/FEA 209 544/94 B 2(42)
Company Internal © Sony Ericsson Mobile Communications AB
K750i & K750c Working Instructions Mechanical
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.
3/00021-1/FEA 209 544/94 B 3(42)
Company Internal © Sony Ericsson Mobile Communications AB
K750i & K750c Working Instructions Mechanical
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.
3/00021-1/FEA 209 544/94 B 4(42)
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K750i & K750c Working Instructions Mechanical
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.
3/00021-1/FEA 209 544/94 B 5(42)
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K750i & K750c Working Instructions Mechanical
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.
3/00021-1/FEA 209 544/94 B 6(42)
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K750i & K750c Working Instructions Mechanical
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 (1) before the antenna
cover is removed from the frame!
Open the phone with the guitar pick by starting at pos. 2.
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 (3).
Gently move the guitar pick along the gap both ways (4)
until the antenna cover is loose on all sides.
If necessary, do the same thing on the opposite side.
Be careful not to damage the antenna cover and the
frame as they become separated!
Gently lift the cover in the loose end (5) and then
slide/wiggle it forward in the arrow direction (6) until it can
be removed.
3/00021-1/FEA 209 544/94 B 7(42)
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K750i & K750c Working Instructions Mechanical
Antenna Cover continued
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 (Ä… 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
3/00021-1/FEA 209 544/94 B 8(42)
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K750i & K750c Working Instructions Mechanical
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.
3/00021-1/FEA 209 544/94 B 9(42)
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K750i & K750c Working Instructions Mechanical
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
3/00021-1/FEA 209 544/94 B 10(42)
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K750i & K750c Working Instructions Mechanical
Front continued
ASSEMBLY
Remove the inside protection foil (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
3/00021-1/FEA 209 544/94 B 11(42)
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K750i & K750c Working Instructions Mechanical
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
3/00021-1/FEA 209 544/94 B 12(42)
Company Internal © Sony Ericsson Mobile Communications AB
K750i & K750c Working Instructions Mechanical
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.
3/00021-1/FEA 209 544/94 B 13(42)
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K750i & K750c Working Instructions Mechanical
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.
Gently fold down the keyfoil and metal plate (6) onto the
plastic carrier.
Make sure that the keyfoil is correctly assembled against
the two stops (7) on the plastic carrier!
Follow the Assembly instructions of section 3.4 3.1
3/00021-1/FEA 209 544/94 B 14(42)
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K750i & K750c Working Instructions Mechanical
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.
3/00021-1/FEA 209 544/94 B 15(42)
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K750i & K750c Working Instructions Mechanical
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 in 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
3/00021-1/FEA 209 544/94 B 16(42)
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K750i & K750c Working Instructions Mechanical
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.
3/00021-1/FEA 209 544/94 B 17(42)
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K750i & K750c Working Instructions Mechanical
PBA continued
With the PBA in its 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.
3/00021-1/FEA 209 544/94 B 18(42)
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K750i & K750c Working Instructions Mechanical
PBA continued
Do not bend the PBA too much upwards!
With the PBA in its raised position, wiggle the board side
to side (if necessary) while pressing it into the system
connector.
Fold down the PBA completely so that its guide hole is
aligned with the guide peg at the top of the frame (1).
Snap the PBA down into the frame.
Make sure that the PBA and the system connector are in
their proper positions and securely locked by the two
hooks (2) on each side of the frame!
Be careful not to damage the camera flexfilm!
Make sure the board-to-board connector on the PBA has
not become broken!
Connect the lower camera flexfilm board-to-board
connector to the PBA with your fingers or with the flexfilm
assembly tool.
Follow the Assembly instructions of section 3.6 3.1
3/00021-1/FEA 209 544/94 B 19(42)
Company Internal © Sony Ericsson Mobile Communications AB
K750i & K750c Working Instructions Mechanical
3.8 Camera
REMOVAL
Follow the Removal instructions of section 3.1 3.7
Be careful with the camera and its flexfilm and do not
touch the camera lens!
Gently fold away the camera flexfilm to the right.
Remove the camera by lifting it straight up.
ASSEMBLY
Mount the camera from the inside of the frame by pressing
gently with your finger, until it is properly mounted.
Follow the Assembly instructions of section 3.7 3.1
3/00021-1/FEA 209 544/94 B 20(42)
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K750i & K750c Working Instructions Mechanical
3.9 Antenna
REMOVAL
Follow the Removal instructions of section 3.1 3.7
Be careful not to damage the frame and the antenna with
the dentist hook!
Remove the antenna from the frame with a dentist hook.
Start by pressing the hook into the holes.
Do the same thing on the opposite side of the antenna.
Be careful not to damage the frame and the antenna with
the tweezers!
Push gently with a blunt pair of tweezers (making sure that
you press on the snap hooks of the antenna) from the
inside of the frame until the whole antenna is released.
ASSEMBLY
Assemble a new antenna with your hands.
Make sure that the antenna is mounted in its proper
position!
Follow the Assembly instructions of section 3.7 3.1
3/00021-1/FEA 209 544/94 B 21(42)
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K750i & K750c Working Instructions Mechanical
3.10 Camera Flex
REMOVAL
Follow the Removal instructions of section 3.1 3.8
Note how the camera flex is assembled before removal!
Be careful with the dentist hook!
Gently bend with the dentist hook under the camera flex
until it becomes loose.
Be careful with the tweezers!
Continue and do the same thing on the flexfilm for the
LED´s by using the tweezers.
ASSEMBLY
If necessary, clean the surface of the frame with
isopropyl alcohol before attaching new adhesives!
Gently slide a camera flexfilm through the hole in the
frame.
Attach the camera flex to the frame.
Follow the Assembly instructions of section 3.8 3.1
3/00021-1/FEA 209 544/94 B 22(42)
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K750i & K750c Working Instructions Mechanical
3.11 Speaker Box
REMOVAL
Follow the Removal instructions of section 3.1 3.9
Press with your finger from the back until the speaker box
starts to become separated from the frame.
Gently push the speaker box away from the frame until it
becomes loose and can be removed.
ASSEMBLY
Remove adhesive remains from the speaker cavity (1)!
To avoid damage, do not press in the center of the
speaker!
Peel off the protection foil (new speaker only) and mount
the speaker box in its proper position.
Follow the Assembly instructions of section 3.9 3.1
3/00021-1/FEA 209 544/94 B 23(42)
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K750i & K750c Working Instructions Mechanical
3.12 System Connector
REMOVAL
Follow the Removal instructions of section 3.1 3.7
Remove the system connector with a blunt pair of
tweezers or by hand.
ASSEMBLY
Mount the system connector with your fingers or tweezers.
Check that the system connector has reached the
bottom of the frame!
Follow the Assembly instructions of section 3.7 3.1
3/00021-1/FEA 209 544/94 B 24(42)
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K750i & K750c Working Instructions Mechanical
3.13 Vibrator
REMOVAL
Follow the Removal instructions of section 3.1 3.7
Do not touch the vibrator contact springs and do not
damage the flywheel!
Lift the vibrator straight up with a blunt pair of tweezers.
ASSEMBLY
Mount the vibrator using a blunt pair of tweezers.
Press the vibrator gently to the bottom of the cavity with
the tweezers!
Follow the Assembly instructions of section 3.7 3.1
3/00021-1/FEA 209 544/94 B 25(42)
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K750i & K750c Working Instructions Mechanical
3.14 Bluetooth Antenna
REMOVAL
Follow the Removal instructions of section 3.1 3.7
Note the BT antenna position on the frame!
Remove the BT antenna with a dentist hook and a blunt
pair of tweezers.
ASSEMBLY
Mount the antenna with the tweezers.
Follow the Assembly instructions of section 3.7 3.1
3.15 IrDA Window
REMOVAL
Follow the Removal instructions of section 3.1 3.7
Remove the IrDA window using the flexfilm assembly tool
or your fingers.
ASSEMBLY
Be careful not to scratch the IrDA window with the
flexfilm assembly tool!
Mount the IrDA window using the flexfilm assembly tool or
your fingers.
Follow the Assembly instructions of section 3.7 3.1
3/00021-1/FEA 209 544/94 B 26(42)
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K750i & K750c Working Instructions Mechanical
3.16 On/Off Key
REMOVAL
Follow the Removal instructions of section 3.1 3.7
Remove the On/Off key with a blunt pair of tweezers.
ASSEMBLY
Mount a new On/Off key into the frame with the tweezers
or your fingers.
Make sure that the On/Off key is properly mounted!
Follow the Assembly instructions of section 3.7 3.1
3.17 Volume Key
REMOVAL
Follow the Removal instructions of section 3.1 3.7
Remove the volume key with a blunt pair of tweezers.
ASSEMBLY
Do not damage the volume key with the tweezers!
Mount a new volume key by using the tweezers or your
fingers.
Make sure the volume key is properly mounted!
Follow the Assembly instructions of section 3.7 3.1
3/00021-1/FEA 209 544/94 B 27(42)
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K750i & K750c Working Instructions Mechanical
3.18 Music Player Key
REMOVAL
Follow the Removal instructions of section 3.1 3.7
Remove the music player key with a blunt pair of
tweezers.
ASSEMBLY
Do not damage the music player key with the tweezers!
Mount a new music player key by using the tweezers or
your fingers.
Make sure the music player key is properly mounted!
Follow the Assembly instructions of section 3.7 3.1
3.19 Camera Key
REMOVAL
Follow the Removal instructions of section 3.1 3.7
Remove the camera key with a blunt pair of tweezers.
ASSEMBLY
Be careful not to damage the camera key with the
tweezers!
Mount a new camera key by using the tweezers or your
fingers.
Make sure the camera key is properly mounted!
Follow the Assembly instructions of section 3.7 3.1
3/00021-1/FEA 209 544/94 B 28(42)
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K750i & K750c Working Instructions Mechanical
3.20 Frame
REMOVAL & ASSEMBLY
Follow the Removal instructions of sections 3.1 3.19
Replace the frame.
Follow the Assembly instructions of sections 3.19 3.1
3.21 Camera Gasket
REMOVAL
Follow the Removal instructions of section 3.1 3.8
Be careful with the camera and its flexfilm and do not
touch the camera lens!
Gently remove the old camera gasket with the dentist
hook and a blunt pair of tweezers.
ASSEMBLY
If necessary, clean the surface of the camera with
isopropyl alcohol before attaching a new gasket!
Attach a new camera gasket with the tweezers.
Follow the Assembly instructions of section 3.8 3.1
3/00021-1/FEA 209 544/94 B 29(42)
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K750i & K750c Working Instructions Mechanical
3.22 Tape, MS Duo
REMOVAL
Follow the Removal instructions of section 3.1 3.6
Be careful with the dentist hook!
Remove the old tape using a dentist hook.
ASSEMBLY
If necessary, clean the metal surface with isopropyl
alcohol before attaching the new tape!
Attach a new tape using a blunt pair of tweezers.
Follow the Assembly instructions of section 3.6 3.1
3.23 Support Pad, LCD
REMOVAL
Follow the Removal instructions of section 3.1 3.6
Be careful with the dentist hook!
Remove the pad using a dentist hook.
ASSEMBLY
If necessary, clean the surface with isopropyl alcohol
before attaching the new pad!
Attach a new pad using a blunt pair of tweezers.
Follow the Assembly instructions of section 3.6 3.1
3/00021-1/FEA 209 544/94 B 30(42)
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K750i & K750c Working Instructions Mechanical
3.24 Camera Flex Pad, upper
REMOVAL
Follow the Removal instructions of section 3.1 3.6
Be careful with the dentist hook!
Remove the pad using a dentist hook.
ASSEMBLY
If necessary, clean the surface with isopropyl alcohol
before attaching the new pad!
Attach a new pad using a blunt pair of tweezers.
Follow the Assembly instructions of section 3.6 3.1
3.25 Pressure Pad, camera connector
REMOVAL
Follow the Removal instructions of section 3.1 3.6
Be careful with the dentist hook!
Remove the pad using a dentist hook.
ASSEMBLY
If necessary, clean the surface with isopropyl alcohol
before attaching the new pad!
Attach a new pad using a blunt pair of tweezers.
Follow the Assembly instructions of section 3.6 3.1
3/00021-1/FEA 209 544/94 B 31(42)
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K750i & K750c Working Instructions Mechanical
3.26 Pressure Pad, mini T-top
REMOVAL
Follow the Removal instructions of section 3.1 3.7
Be careful with the dentist hook!
Remove the pad using a dentist hook.
ASSEMBLY
If necessary, clean the surface with isopropyl alcohol
before attaching the new pad!
Attach a new pad using a blunt pair of tweezers.
Follow the Assembly instructions of section 3.7 3.1
3/00021-1/FEA 209 544/94 B 32(42)
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K750i & K750c Working Instructions Mechanical
3.27 Joystick Button
REMOVAL
Follow the Removal instructions of section 3.1 3.5
Remove the old joystick button with your fingers.
The joystick button cannot be reused due to the crash
ribs inside the button!
ASSEMBLY
When assembling a new joystick button you must first
check that the dust gasket is properly mounted.
The flat part of the joystick button should be pointing
towards the top of the phone!
Press the joystick button onto the joystick switch.
Follow the Assembly instructions of section 3.5 3.1
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K750i & K750c Working Instructions Mechanical
3.28 Keyboard Foil
REMOVAL
Follow the Removal instructions of section 3.1 3.5
Gently flip the keyfoil and metal plate to the right.
Remove the keyboard foil with a blunt pair of tweezers or
by hand.
After removal clean the surface of the metal plate with
isopropyl alcohol.
ASSEMBLY
The keyboard foil should be aligned to the markings and
the holes on the plate!
Attach a new keyboard foil with your fingers.
Follow the Assembly instructions of section 3.5 3.1
3/00021-1/FEA 209 544/94 B 34(42)
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K750i & K750c Working Instructions Mechanical
3.29 Ground Springs
REMOVAL
Follow the Removal instructions of section 3.1 3.5
Remove the two ground springs using a blunt pair of
tweezers.
ASSEMBLY
Mount two new ground springs using a blunt pair of
tweezers.
Follow the Assembly instructions of section 3.5 3.1
3/00021-1/FEA 209 544/94 B 35(42)
Company Internal © Sony Ericsson Mobile Communications AB
K750i & K750c Working Instructions Mechanical
3.30 Spacer, board-to-board connector
REMOVAL
Follow the Removal instructions of section 3.1 3.5
Be careful not to damage the keyboard flexfilm with the
tweezers.
Remove the spacer with a blunt pair of tweezers or by
hand.
ASSEMBLY
Attach a new spacer by hand.
Follow the Assembly instructions of section 3.5 3.1
3.31 Tape, plastic carrier
REMOVAL
Follow the Removal instructions of section 3.1 3.5
Remove the tape with a dentist hook.
ASSEMBLY
If necessary, clean the plastic carrier surface with
isopropyl alcohol before attaching the new tape!
Attach a new tape with a blunt pair of tweezers.
Follow the Assembly instructions of section 3.5 3.1
3/00021-1/FEA 209 544/94 B 36(42)
Company Internal © Sony Ericsson Mobile Communications AB
K750i & K750c Working Instructions Mechanical
3.32 Liquid Intrusion Indicator
REMOVAL
Follow the Removal instructions of section 3.1
Note the position of the liquid intrusion indicator on the
frame!
Remove the liquid intrusion indicator with a dentist hook.
ASSEMBLY
If necessary, clean the frame surface with isopropyl
alcohol before attaching the new indicator!
Attach a new indicator.
Follow the Assembly instructions of section 3.1
3/00021-1/FEA 209 544/94 B 37(42)
Company Internal © Sony Ericsson Mobile Communications AB
K750i & K750c Working Instructions Mechanical
3.33 Memory Card Rubber Lid
REMOVAL
Can be done without any previous disassembly!
Remove the memory card rubber key with your fingers.
ASSEMBLY
Mount a new rubber lid by hand and using tweezers.
3.34 Plug, external antenna
REMOVAL
Can be done without any previous disassembly!
Be careful not to scratch the antenna cover with the front
opening tool!
Remove the plug using the front opening tool.
ASSEMBLY
Mount the plug with your fingers.
3/00021-1/FEA 209 544/94 B 38(42)
Company Internal © Sony Ericsson Mobile Communications AB
K750i & K750c Working Instructions Mechanical
3.35 Co-brand Inlay
REMOVAL
Can be done without any previous disassembly!
Do not scratch the front with the dentist hook!
Gently remove the co-brand inlay with a dentist hook.
ASSEMBLY
Attach a new co-brand inlay with a blunt pair of tweezers
or by hand and keep the pressure on for a few seconds to
secure a good fit.
3/00021-1/FEA 209 544/94 B 39(42)
Company Internal © Sony Ericsson Mobile Communications AB
K750i & K750c Working Instructions Mechanical
3.36 Mount camera flex film pads
Mount the two pads according to instructions to the right.
Upper pad to be mounted in the center of stiffener of
camera FPC
Lower pad to be mounted edge to edge with the upper
pad.
Note! No part of the pads are allowed to overlap each
other.
3/00021-1/FEA 209 544/94 B 40(42)
Company Internal © Sony Ericsson Mobile Communications AB
K750i & K750c Working Instructions Mechanical
4 Label
TOOLS
" Hot air flow solder station
" Blunt pair of tweezers
" Zebra printer and computer
INSTRUCTION
This instruction should be used when exchanging an old
label or assembling a new one.
Note the position of the label before removal!
One label only is allowed on the frame!
1. Read the old label and/or write the information into the
Labelmake program.
2. Heat up the label with a hot air flow solder station, if
needed.
3. Carefully remove the label and make sure that all
residues are gone.
If necessary, clean the surface with isopropyl alcohol.
Do not scratch the frame.
4. Check that the right label format is loaded in the Zebra
printer.
5. Write a new label by using the program Labelmake .
Check that the printing is ok.
6. Take the new label and place it onto the frame as in
the picture.
Make sure the label is placed in its proper position.
3/00021-1/FEA 209 544/94 B 41(42)
Company Internal © Sony Ericsson Mobile Communications AB
K750i & K750c Working Instructions Mechanical
5 Revision History
Rev. Date Changes / Comments
A 2005-05-19 Initial release
B 2005-07-14 Added section: Mount camera flex film pads
Updated and corrrected fields.
3/00021-1/FEA 209 544/94 B 42(42)
Company Internal © Sony Ericsson Mobile Communications AB
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