Sony Xperia TX LT29i User manual

1266-4901 Rev 1
Sony Mobile Communications AB –Company Internal
Working Instructions
- mechanical -
Xperia TX
LT29i

Working Instructions (mech)
1266-4901 Rev 1
Sony Mobile Communications AB –Company Internal
2(78)
CONTENTS
1Exterior Views.................................................................................4
1.1 LT29i .....................................................................................................4
2Tools................................................................................................5
3Disassembly....................................................................................6
3.1 Cover Battery Assy..............................................................................6
3.2 Battery...................................................................................................6
3.3 Frame Rear Assy..................................................................................7
3.4 Key Flex FPC........................................................................................9
3.5 Camera................................................................................................10
3.6 RCV Flex FPC Assy............................................................................11
3.7 Main PBA & Cover Front Assy ..........................................................12
4Replacement.................................................................................15
4.1 Label NFC ...........................................................................................15
4.2 Cover Battery Assy............................................................................16
4.3 Label Core Unit...................................................................................17
4.4 Water Indicator...................................................................................18
4.5 Frame Rear Assy................................................................................19
4.6 Antenna NFC ......................................................................................20
4.7 Cushion...............................................................................................21
4.8 Audio Jack & Adhesive Audio Jack..................................................22
4.9 Vibrator...............................................................................................25
4.10 Loudspeaker & Adhesive Speaker....................................................26
4.11 Cap RF ................................................................................................28
4.12 Main Antenna Assy............................................................................30
4.13 Sub Antenna Assy .............................................................................32
4.14 Key Camera ........................................................................................34
4.15 Key On/Off ..........................................................................................36
4.16 Key Volume ........................................................................................38
4.17 Camera................................................................................................40
4.18 RCV Flex FPC.....................................................................................42
4.19 Ear Speaker & Adhesive Earspeaker................................................49
4.20 Cushion Audio Jack...........................................................................52
4.21 Cushion Audio Jack 2........................................................................53
4.22 RF Cable .............................................................................................55
4.23 Cushion Key Flex...............................................................................59
4.24 Key Flex FPC......................................................................................60
4.25 Sub Board Assy .................................................................................61
4.26 Cushion PBA Main.............................................................................63
4.27 Sheet PBA Main..................................................................................64

Working Instructions (mech)
1266-4901 Rev 1
Sony Mobile Communications AB –Company Internal
3(78)
4.28 Cover Front Assy ...............................................................................66
4.29 Board Swap - Replacement...............................................................67
4.30 Board Swap –Change Label.............................................................67
4.31 Board Swap –Customize of Software ..............................................67
5Reassembly...................................................................................68
5.1 Cover Front Assy & Main PBA ..........................................................68
5.2 RCV Flex FPC Assy............................................................................70
5.3 Camera................................................................................................71
5.4 Key Flex FPC......................................................................................72
5.5 Frame Rear Assy................................................................................74
5.6 Battery.................................................................................................76
5.7 Cover Battery Assy............................................................................76
6Revision History...........................................................................78
For general information about mechanical repair related issues, refer to
1220-1333: Generic Repair Manual - mechanical

Working Instructions (mech)
1266-4901 Rev 1
Sony Mobile Communications AB –Company Internal
4(78)
1 Exterior Views
1.1 LT29i

Working Instructions (mech)
1266-4901 Rev 1
Sony Mobile Communications AB –Company Internal
5(78)
2 Tools
SPECIAL TOOLS
1. Torque Screwdriver
2. Front Opening Tool
3. Bits (T5)
4. Bits (JCIS No 0)
5. Flex Film Assembly Tool
6. Guitar Pick
For part no’s on the tools above, refer to the ‘Tools Catalogue/Matrix’!
STANDARD TOOLS
1. Dentist Hook
2. Nylon Pointer
3. Tweezers

Working Instructions (mech)
1266-4901 Rev 1
Sony Mobile Communications AB –Company Internal
6(78)
3 Disassembly
The disassembly is done in the following order:
1. Cover Battery Assy
2. Battery
3. Frame Rear Assy
4. Key Flex FPC
5. Camera
6. RCV Flex FPC Assy
7. Main PBA (a) & Cover Front Assy (b)
3.1 Cover Battery Assy
Gently pull upwards to unsnap the hooks of the Cover
Battery Assy.
Remove the Cover Battery Assy.
3.2 Battery
Gently pull upwards to release the Battery with a finger.

Working Instructions (mech)
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Sony Mobile Communications AB –Company Internal
7(78)
Disassembly
Remove it.
3.3 Frame Rear Assy
Remove the four Screw Other Len:4.0 Diam:1.4 by using a
screwdriver with Bits (T5).
Scrap! Not to be reused!
Remove the Screw 1.4X3.5 by using a screwdriver with Bits
(JCIS No 0).
Scrap! Not to be reused!
Remove the three Screw M1.4X3.0 by using a screwdriver
with Bits (JCIS No 0).
Scrap! Not to be reused!

Working Instructions (mech)
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Sony Mobile Communications AB –Company Internal
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Disassembly
There are twelve hooks securing the Frame Rear Assy.
Insert a Guitar Pick as shown in picture and gently slide
along to release the hooks.
Do the same to release the bottom side.
Do the same to release the hooks on the opposite side.

Working Instructions (mech)
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Sony Mobile Communications AB –Company Internal
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Disassembly
Do the same on the top side.
Remove the Frame Rear Assy.
3.4 Key Flex FPC
Disconnect the BtB connector of the Key Flex FPC by using
a Front Opening Tool.
Disconnect the second BtB connector.

Working Instructions (mech)
1266-4901 Rev 1
Sony Mobile Communications AB –Company Internal
10(78)
Disassembly
Gently pull upwards to release the key camera switch as
shown in picture by using a Front Opening Tool.
Remove the Key Flex FPC.
3.5 Camera
Disconnect the BtB connector of the Camera by using a
Front Opening Tool.
Remove the Camera.
Be careful! Do not touch the camera lens!

Working Instructions (mech)
1266-4901 Rev 1
Sony Mobile Communications AB –Company Internal
11(78)
Disassembly
3.6 RCV Flex FPC Assy
Gently pull upwards to release the key on/off switch by using
a Front Opening Tool as shown.
Disconnect the BtB connector.
Insert a Front Opening Tool as shown and gently pull
upwards to release the RCV Flex FPC Assy from this side.
Be careful! Do not damage the Cover Front Assy!
Do the same on the other side as shown in picture.
Be careful! Do not damage the earspeaker mesh and the
proximity sensor window of the Cover Front Assy!

Working Instructions (mech)
1266-4901 Rev 1
Sony Mobile Communications AB –Company Internal
12(78)
Disassembly
Remove the RCV Flex FPC Assy by using a Flex Film
Assembly Tool.
Scrap the RCV Flex FPC Assy! Only the Ear Speaker can
be reused!
Be careful! Do not damage the earspeaker mesh and the
proximity sensor window of the Cover Front Assy!
3.7 Main PBA & Cover Front
Assy
Disconnect the BtB connector by using a Front Opening
Tool.
Disconnect the second BtB connector.
Disconnect this end of the RF Cable by using a Front
Opening Tool.

Working Instructions (mech)
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Sony Mobile Communications AB –Company Internal
13(78)
Disassembly
Gently pull outwards to release the RF Cable from the hook
of the Main PBA.
There are five hooks securing the Main PBA.
Insert a Flex Film Assembly Tool as shown in picture and
gently pull upwards to release the hooks.
Do the same to release the Main PBA.

Working Instructions (mech)
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Sony Mobile Communications AB –Company Internal
14(78)
Disassembly
Remove the Main PBA.

Working Instructions (mech)
1266-4901 Rev 1
Sony Mobile Communications AB –Company Internal
15(78)
4 Replacement
4.1 Label NFC
Carry out the Removal as described below!
Prepare a new Label NFC.
Carry out the Installation as described below.
REMOVAL
Carefully peel off the Label NFC by using a Flex Film
Assembly Tool.
Scrap! Not to be reused!
INSTALLATION
Attach a new Label NFC on its proper position as indicated
by the blue rectangle.
Press to secure its position and attachment.

Working Instructions (mech)
1266-4901 Rev 1
Sony Mobile Communications AB –Company Internal
16(78)
Replacement
4.2 Cover Battery Assy
Follow the 3.1 Disassembly instructions!
Prepare a new Cover Battery Assy.
Follow the 4.1 installation instructions!
Follow the 5.7 Reassembly instructions!

Working Instructions (mech)
1266-4901 Rev 1
Sony Mobile Communications AB –Company Internal
17(78)
Replacement
4.3 Label Core Unit
Follow the 3.1 –3.2 Disassembly instructions!
Carry out the Removal as described below!
Prepare a new Label Core Unit.
Carry out the Installation as described below.
Follow the 5.6 –5.7 Reassembly instructions!
REMOVAL
Read the old Mobile Phone Label and write the information
into the ‘Label Print Solution’ program before removal.
Carefully peel off the Label Core Unit by using a Flex Film
Assembly Tool.
Scrap! Not to be reused!
INSTALLATION
Check that the label format is properly loaded in the Zebra
printer and write a new Label using the ‘‘Label Print Solution’
software.
Attach a new Label Core Unit on its proper position and
press along to secure its attachment.

Working Instructions (mech)
1266-4901 Rev 1
Sony Mobile Communications AB –Company Internal
18(78)
Replacement
4.4 Water Indicator
Follow the 3.1 –3.2 Disassembly instructions!
Carry out the Removal as described below.
Prepare a new Water indicator.
Carry out the Installation as described below.
Follow the 5.6 –5.7 Reassembly instructions!
REMOVAL
Detach to remove the Water indicator.
Scrap! Not to be reused!
INSTALLATION
Place a new Water Indicator on the correct position as
indicated by the guide line.
Press to secure its position and attachment.

Working Instructions (mech)
1266-4901 Rev 1
Sony Mobile Communications AB –Company Internal
19(78)
Replacement
4.5 Frame Rear Assy
Follow the 3.1 –3.3 Disassembly instructions!
Follow the 4.8, 4.9, 4.10, 4.11, 4.14, 4.15 and 4.16 Removal
instructions!
Prepare a new Frame Rear Assy.
Follow the 4.6, 4.7, 4.8, 4.9, 4.10, 4.11, 4.12, 4.13, 4.14,
4.15 and 4.16 Installation instructions!
Follow the 5.5 –5.7 Reassembly instructions!

Working Instructions (mech)
1266-4901 Rev 1
Sony Mobile Communications AB –Company Internal
20(78)
Replacement
4.6 Antenna NFC
Follow the 3.1 –3.3 Disassembly instructions!
Carry out the Removal as described below.
Prepare a new Antenna NFC.
Carry out the Installation as described below.
Follow the 4.7 Installation instructions!
Follow the 5.5 –5.7 Reassembly instructions!
REMOVAL
Detach to remove the Antenna NFC by using a Flex Film
Assembly Tool.
Scrap! Not to be reused!
INSTALLATION
Place a new Antenna NFC on its proper position as
indicated by the pegs and holes.
Press along to secure its position.