Sony XPERIA micro ST23i User manual

1266-5134 Rev 2
Sony Mobile Communications AB –Company Internal
Working Instructions
- mechanical -
ST23i,ST23a
XperiaTM miro

Working Instructions (mech)
1266-5134 Rev 2
Sony Mobile Communications AB –Company Internal
2(60)
CONTENTS
1Exterior Views.................................................................................4
1.1 ST23i, ST23a.........................................................................................4
2Tools................................................................................................5
3Disassembly....................................................................................6
3.1 Cover Battery Assy..............................................................................6
3.2 Battery...................................................................................................6
3.3 Rear Cover Assy ..................................................................................7
3.4 Core Unit Label.....................................................................................8
3.5 Tape Connector & Sub Board Assy....................................................8
3.6 Tape Connector & Cover Front Assy................................................11
3.7 Tape ZIF Connector & FPC Link........................................................12
3.8 RF Cable & Main PBA ........................................................................13
4Replacement.................................................................................15
4.1 Cover Battery Assy............................................................................15
4.2 Core Unit Label...................................................................................16
4.3 Key Power...........................................................................................17
4.4 Key Volume ........................................................................................19
4.5 Rear Cover Assy ................................................................................21
4.6 Speaker & Adhesive Speaker............................................................22
4.7 Rubber Mic .........................................................................................24
4.8 Rubber Cap.........................................................................................25
4.9 Vibrator...............................................................................................26
4.10 Deco & Adhesive Deco ......................................................................27
4.11 Gasket Speaker..................................................................................30
4.12 Water Indicator...................................................................................31
4.13 Tape Connector (on Sub Board Assy)..............................................33
4.14 Sub Board Assy .................................................................................33
4.15 Tape Connector (on Main PBA).........................................................33
4.16 Cover Front Assy ...............................................................................33
4.17 Receiver & Adhesive Receiver..........................................................34
4.18 Rubber Proximity Sensor ..................................................................36
4.19 Tape ZIF Connector............................................................................37
4.20 FPC Link .............................................................................................37
4.21 RF Cable .............................................................................................37
4.22 Conductive Tape Receiver.................................................................38
4.23 Gasket Main Board.............................................................................39
4.24 FPC SIM SD ........................................................................................40
4.25 Shielding Cover PWR.........................................................................42
4.26 Shielding Cover BB............................................................................43

Working Instructions (mech)
1266-5134 Rev 2
Sony Mobile Communications AB –Company Internal
3(60)
4.27 Shielding Cover RF............................................................................44
4.28 Conductive Tape Camera ..................................................................45
4.29 Camera & Cushion Camera...............................................................46
4.30 Board Swap - Replacement...............................................................49
4.31 Board Swap –Change Label.............................................................49
4.32 Board Swap –Customize of Software ..............................................49
5Reassembly...................................................................................50
5.1 RF Cable .............................................................................................50
5.2 FPC Link & Tape ZIF Connector........................................................50
5.3 Cover Front Assy & Tape Connector................................................51
5.4 Sub Board Assy & Tape Connector..................................................53
5.5 Rear Cover Assy ................................................................................56
5.6 Core Unit Label...................................................................................57
5.7 Battery.................................................................................................57
5.8 Cover Battery Assy............................................................................58
6Revision History...........................................................................60
For general information about mechanical repair related issues, refer to
1220-1333: Generic Repair Manual - mechanical

Working Instructions (mech)
1266-5134 Rev 2
Sony Mobile Communications AB –Company Internal
4(60)
1 Exterior Views
1.1 ST23i, ST23a

Working Instructions (mech)
1266-5134 Rev 2
Sony Mobile Communications AB –Company Internal
5(60)
2 Tools
SPECIAL TOOLS
1. Torque Screwdriver
2. Front Opening Tool
3. Bits (T5)
4. Bits (Philip screw)
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. Tweezers
2. Nylon Pointer

Working Instructions (mech)
1266-5134 Rev 2
Sony Mobile Communications AB –Company Internal
6(60)
3 Disassembly
The disassembly is done in the following order:
1. Cover Battery Assy
2. Battery
3. Rear Cover Assy
4. Core Unit Label
5. Tape Connector (a) & Sub Board Assy (b)
6. Tape Connector (a) & Cover Front Assy (b)
7. Tape ZIF Connector (a) & FPC Link (b)
8. RF Cable (a) & Main PBA (b)
3.1 Cover Battery Assy
Insert a finger into the gap as shown in picture and gently
pull upwards to release the hooks of the Cover Battery Assy.
3.2 Battery
Insert a finger and raise the bottom of the Battery to release
it.
Remove the Battery.

Working Instructions (mech)
1266-5134 Rev 2
Sony Mobile Communications AB –Company Internal
7(60)
Disassembly
3.3 Rear Cover Assy
Remove the six Screw (T5) M1.6*L3.8 by using a
screwdriver with Bits (T5).
Scrap! Not to be reused!
Remove the Screw M1.6*L2.6 by using a screwdriver with
Bits (Philip screw).
Scrap! Not to be reused!
There are seven hooks securing the Rear Cover Assy.
Insert a Front Opening Tool as shown and gently pull
upwards to release the hooks.

Working Instructions (mech)
1266-5134 Rev 2
Sony Mobile Communications AB –Company Internal
8(60)
Disassembly
Do the same on the opposite side.
Gently lift up the Rear Cover Assy to release the hook on
the top side and remove it.
3.4 Core Unit Label
Carefully peel off the Core Unit Label by using a Flex Film
Assembly Tool.
Scrap! Not to be reused!
Be careful! Do not damage the tape and the FPC Link
under the Core Unit Label!
3.5 Tape Connector & Sub
Board Assy
Disconnect this end of the RF Cable.

Working Instructions (mech)
1266-5134 Rev 2
Sony Mobile Communications AB –Company Internal
9(60)
Disassembly
Release the RF Cable from the two hooks.
There are three hooks securing the Sub Board Assy.
Insert a Front Opening Tool as shown in picture and gently
pull upwards to release the hooks.
Do the same on the opposite side to release the Sub Board
Assy as shown.

Working Instructions (mech)
1266-5134 Rev 2
Sony Mobile Communications AB –Company Internal
10(60)
Disassembly
Turn it over.
Peel off the Tape Connector by using a Flex Film Assembly
Tool.
Scrap! Not to be reused!
Unlock the ZIF connector.
Remove the Sub Board Assy.

Working Instructions (mech)
1266-5134 Rev 2
Sony Mobile Communications AB –Company Internal
11(60)
Disassembly
3.6 Tape Connector & Cover
Front Assy
Gently pull upwards to detach the FPC Link from the Cover
Front Assy.
Gently peel off the Tape Connector by using a Flex Film
Assembly Tool.
Scrap! Not to be reused!
Unlock the ZIF connector.
Be careful! Do not pull out the FPC!
There are two pegs securing the Main PBA.

Working Instructions (mech)
1266-5134 Rev 2
Sony Mobile Communications AB –Company Internal
12(60)
Disassembly
Insert a Front Opening Tool as shown and gently pull
upwards to release the Main PBA.
Turn the Main PBA over.
Remove the Main PBA.
Be careful! Do not damage the FPC of the Front Cover
Assy!
3.7 Tape ZIF Connector &
FPC Link
Gently peel off the Tape ZIF Connector by using a Flex Film
Assembly Tool.
Scrap! Not to be reused!

Working Instructions (mech)
1266-5134 Rev 2
Sony Mobile Communications AB –Company Internal
13(60)
Disassembly
Unlock the ZIF connector.
Remove the FPC Link.
Scrap! Not to be reused!
3.8 RF Cable & Main PBA
Insert a Front Opening Tool as shown and gently pull
upwards to release the RF Cable from the hook.
Turn the RF Cable at approximate 90 degree as shown.

Working Instructions (mech)
1266-5134 Rev 2
Sony Mobile Communications AB –Company Internal
14(60)
Disassembly
Disconnect this end of the RF Cable.
Separate the RF Cable and the Main PBA.

Working Instructions (mech)
1266-5134 Rev 2
Sony Mobile Communications AB –Company Internal
15(60)
4 Replacement
4.1 Cover Battery Assy
Follow the 3.1 Disassembly instructions!
Prepare a new Cover Battery Assy.
Follow the 5.8 Reassembly instructions!

Working Instructions (mech)
1266-5134 Rev 2
Sony Mobile Communications AB –Company Internal
16(60)
Replacement
4.2 Core Unit Label
Follow the 3.1 –3.2 Disassembly instructions!
Carry out the Removal as described below.
Prepare a new Core Unit Label.
Carry out the Installation as described below.
Follow the 5.7 –5.8 Reassembly instructions!
REMOVAL
Read the old Label Mobile Phone and write the information
into the ‘Label Print Solution’ program.
Carefully peel off to remove the Core Unit Label.
Scrap! Not to be reused!
Be careful! Do not damage the tape and the FPC Link
under the Core Unit Label!
INSTALLATION
Check that the proper label format is loaded in the Zebra
printer and write a new Label by using the ‘Label Print
Solution’ software.
One label only is allowed!
Press along the surface of the Core Unit Label to make it
securely attached as shown.

Working Instructions (mech)
1266-5134 Rev 2
Sony Mobile Communications AB –Company Internal
17(60)
Replacement
4.3 Key Power
Follow the 3.1 –3.2 Disassembly instructions!
Carry out the Removal as described below.
Prepare a new Key Power.
Carry out the Installation as described below.
Follow the 5.7 –5.8 Reassembly instructions!
REMOVAL
Gently remove the Key Power by using a Flex Film
Assembly Tool.
Be careful! Do not damage the Rear Cover Assy!
INSTALLATION
Place a new Key Power on its proper position.
Note the orientation of the Key Power to be installed!
Press to secure its position.

Working Instructions (mech)
1266-5134 Rev 2
Sony Mobile Communications AB –Company Internal
18(60)
Replacement: Key Power
Press these two sides to insert the pegs into the holes.

Working Instructions (mech)
1266-5134 Rev 2
Sony Mobile Communications AB –Company Internal
19(60)
Replacement
4.4 Key Volume
Follow the 3.1 –3.2 Disassembly instructions!
Carry out the Removal as described below.
Prepare a new Key Volume.
Carry out the Installation as described below.
Follow the 5.7 –5.8 Reassembly instructions!
REMOVAL
Remove the Key Volume by using a Flex Film Assembly
Tool.
Be careful! Do not damage the Rear Cover Assy!
INSTALLATION
Place a new Key Volume on its proper position.
Note the orientation of the Key Volume to be installed!
Press to snap the hooks.

Working Instructions (mech)
1266-5134 Rev 2
Sony Mobile Communications AB –Company Internal
20(60)
Replacement: Key Volume
Press these two sides to insert the pegs into the holes.