Sony XPeria ST25i User manual

1263-4086 Rev 6
© Sony Mobile Communications AB – Company Internal
Working Instructions
- mechanical -
ST25i, ST25a

Working Instruction Repair Instruction Mechanical
1263-4086 Rev 6
© Sony Mobile Communications AB – Company Internal
2(53)
CONTENTS
1Exterior Views.................................................................................4
1.1 ST25i, ST25a.........................................................................................4
2Tools................................................................................................5
3Disassembly....................................................................................6
3.1 Battery Cover Assy & Battery .............................................................6
3.2 Antenna Cap.........................................................................................7
3.3 Carrier Frame Assy..............................................................................8
3.4 Carrier Window Front assy................................................................10
3.5 Main PBA & Transparent Belt Total Assy.........................................12
4Replacement.................................................................................14
4.1 Battery Cover Assy............................................................................14
4.2 Antenna Cap.......................................................................................14
4.3 Carrier Frame Assy............................................................................14
4.4 Transparent Belt Total Assy..............................................................14
4.5 Antenna Main......................................................................................15
4.6 Audio Jack & Audio jack adhesive ...................................................17
4.7 Audio Jack Sensor FPC Assy ...........................................................19
4.8 Core Unit Label...................................................................................20
4.9 Touch Panel Glass Window 3.5 with Gasket....................................22
4.10 Display................................................................................................26
4.11 Carrier Window Front assy................................................................29
4.12 Ear Speaker & Receiver adhesive.....................................................30
4.13 Loudspeaker & Speaker adhesive ....................................................32
4.14 kMain Camera.....................................................................................34
4.15 Main Camera Copper & Main Camera Film.......................................36
4.16 Shield Can Lid ABB............................................................................38
4.17 Shield Can Lid BT GPS......................................................................39
4.18 Shield Can Lid DBB............................................................................40
4.19 Sub Camera Rubber...........................................................................41
4.20 Water indicator...................................................................................42
4.21 Board Swap - Replacement...............................................................44
4.22 Board Swap – Change Label .............................................................44
4.23 Board Swap – Customize of Software ..............................................44
5Reassembly...................................................................................45
5.1 Main PBA & Transparent Belt Total Assy.........................................45
5.2 Carrier Window Front assy................................................................46
5.3 Carrier Frame Assy............................................................................47
5.4 Antenna Cap.......................................................................................49
5.5 Battery Cover Assy & Battery ...........................................................50

Working Instruction Repair Instruction Mechanical
1263-4086 Rev 6
© Sony Mobile Communications AB – Company Internal
3(53)
6Country of Origin Barcodes for Brazil/VIVO Labels..................52
7Revision History...........................................................................53
For general information about mechanical repair related issues, refer to
1220-1333: Generic Repair Manual - mechanical

Working Instruction Repair Instruction Mechanical
1263-4086 Rev 6
© Sony Mobile Communications AB – Company Internal
4(53)
1 Exterior Views
1.1 ST25i, ST25a

Working Instruction Repair Instruction Mechanical
1263-4086 Rev 6
© Sony Mobile Communications AB – Company Internal
5(53)
2 Tools
SPECIAL TOOLS
1. Torque Screwdriver
2. Flex Film Assembly Tool
3. Front Opening Tool
4. Bits(JCIS No 0)
5. Bits(T5)
6. Bits(T6)
7. Guitar Pick
8. Pressure Tool
9. Pressure Fixture
For part no’s on the tools above, refer to the ‘Tools Catalogue/Matrix’!
STANDARD TOOLS
1. Tweezers (ESD-safe & non-metallic)
2. Nylon Pointer

Working Instruction Repair Instruction Mechanical
1263-4086 Rev 6
© Sony Mobile Communications AB – Company Internal
6(53)
3 Disassembly
The disassembly is done in the following order:
1. Battery Cover Assy (a) & Battery (b)
2. Antenna Cap
3. Carrier Frame Assy
4. Carrier Window Front assy
5. Main PBA (a) & Transparent Belt Total Assy (b)
3.1 Battery Cover Assy &
Battery
Push upwards the Battery Cover Assy with fingers.
Remove the Battery Cover Assy.
Lift up the battery from its cavity.

Working Instruction Repair Instruction Mechanical
1263-4086 Rev 6
© Sony Mobile Communications AB – Company Internal
7(53)
Disassembly
Remove the battery.
3.2 Antenna Cap
Release the hook of Antenna Cap from the gap between
Antenna Cap and Transparent Belt Total Assy from left side
with fingers.
Release the hook from right side.
Remove the Antenna Cap.

Working Instruction Repair Instruction Mechanical
1263-4086 Rev 6
© Sony Mobile Communications AB – Company Internal
8(53)
Disassembly
3.3 Carrier Frame Assy
Remove the Screw Other Len:4.0 Diam:1.4 by a screwdriver
with Bits (T5).
Scrap! Not to be reused!
Remove the Screw Torx Len:5.4 Diam:2.5 by using a
screwdriver with Bits (T6).
Scrap! Not to be reused!
Remove the Screw Torx Len:3.4 Diam:3.0 by using a
screwdriver with Bits (T5).
Scrap! Not to be reused!
Insert the Front Opening Tool to release the hook in the
middle of right side on Carrier Frame Assy.

Working Instruction Repair Instruction Mechanical
1263-4086 Rev 6
© Sony Mobile Communications AB – Company Internal
9(53)
Disassembly
Insert the Front Opening Tool to release the hook at top of
right side on Carrier Frame Assy.
Insert the Front Opening Tool to release the hook in the
middle of left side on Carrier Frame Assy.
Insert the Front Opening Tool to release the hook at top of
left side on Carrier Frame Assy.
Remove the Carrier Frame Assy.

Working Instruction Repair Instruction Mechanical
1263-4086 Rev 6
© Sony Mobile Communications AB – Company Internal
10(53)
Disassembly
3.4 Carrier Window Front
assy
There are three hooks to secure the Main PBA as shown in
the picture.
Push the Carrier Window Front assy with your thumb to
release the hook in the middle of right side and turn upwards
the Transparent Belt Total Assy.
Push the Carrier Window Front assy with your thumb to
release the hook at bottom of left side and turn upwards the
Transparent Belt Total Assy.
Push the Carrier Window Front assy with your thumb to
release the hook at top of left side and turn upwards the
Transparent Belt Total Assy.

Working Instruction Repair Instruction Mechanical
1263-4086 Rev 6
© Sony Mobile Communications AB – Company Internal
11(53)
Disassembly
The three hooks have all been released as shown in the
picture.
Move the Main PBA 5mm away from the Carrier Window
Front assy.
Do not stretch the FPC of BtB connector!
Turn over the phone to show the BtB connector.
Unsnap the BtB connector by using a Front Opening Tool.
5mm

Working Instruction Repair Instruction Mechanical
1263-4086 Rev 6
© Sony Mobile Communications AB – Company Internal
12(53)
Disassembly
Remove the Carrier Window Front assy.
3.5 Main PBA & Transparent
Belt Total Assy
Remove the Screw Torx Len:3.1 Diam:1.4 by using a
screwdriver with Bits (JCIS No 0).
Scrap! Not to be reused!
Unlock the ZIF connector by using a Front Opening Tool.
Insert Front Opening Tool to release the hook and pull out
the Transparent Belt Total Assy.

Working Instruction Repair Instruction Mechanical
1263-4086 Rev 6
© Sony Mobile Communications AB – Company Internal
13(53)
Disassembly
Separate the Main PBA from Transparent Belt Total Assy
carefully.

Working Instruction Repair Instruction Mechanical
1263-4086 Rev 6
© Sony Mobile Communications AB – Company Internal
14(53)
4 Replacement
4.1 Battery Cover Assy
Follow the 3.1 Disassembly instructions!
Prepare the new Battery Cover Assy.
Follow the 5.5 Reassembly instructions!
4.2 Antenna Cap
Follow the 3.1 – 3.2 Disassembly instructions!
Prepare the new Antenna Cap.
Follow the 5.4 – 5.5 Reassembly instructions!
4.3 Carrier Frame Assy
Follow the 3.1 – 3.3 Disassembly instructions!
Follow the 4.6, 4.13, 4.20 Removal instructions!
Prepare the new Carrier Frame Assy.
Follow the 4.6, 4.13, 4.20 Installation instructions!
Follow the 5.3 – 5.5 Reassembly instructions!
4.4 Transparent Belt Total
Assy
Follow the 3.1 – 3.5 Disassembly instructions!
Follow the 4.5 Removal instructions!
Prepare the new Transparent Belt Total Assy.
Follow the 4.5 Installation instructions!
Follow the 5.1 – 5.5 Reassembly instructions!

Working Instruction Repair Instruction Mechanical
1263-4086 Rev 6
© Sony Mobile Communications AB – Company Internal
15(53)
Replacement
4.5 Antenna Main
Follow the 3.1 – 3.2 Disassembly instructions!
Carry out the Removal as described below.
Prepare the new Antenna Main.
Carry out the Installation as described below.
Follow the 5.4 – 5.5 Reassembly instructions!
REMOVAL
Remove the Screw Other Len:4.0 Diam:1.4 by using a
screwdriver with T5.
Scrap! Not to be reused!
Detach the Antenna Main from right bottom side by using a
Front Opening Tool.
Detach the Antenna Main from left bottom side by using a
Front Opening Tool.

Working Instruction Repair Instruction Mechanical
1263-4086 Rev 6
© Sony Mobile Communications AB – Company Internal
16(53)
Replacement: Antenna Main
Remove the Antenna Main.
INSTALLATION
Place a new Antenna Main in the correct position.
Press to secure its position.
Apply 6 ± 1 Ncm torque when tightening the Screw Other
Len:4.0 Diam:1.4 with T5.
Take new screws!

Working Instruction Repair Instruction Mechanical
1263-4086 Rev 6
© Sony Mobile Communications AB – Company Internal
17(53)
Replacement
4.6 Audio Jack & Audio jack adhesive
Follow the 3.1 – 3.3 Disassembly instructions!
Carry out the Removal as described below.
Prepare the new Audio Jack & Audio jack adhesive.
Carry out the Installation as described below.
Follow the 5.3 – 5.5 Reassembly instructions!
REMOVAL
Push against the Audio Jack by using a Nylon Pointer.
Remove the Audio jack adhesive from the back side of
Audio Jack by using a Flex Film Assembly Tool.
Scrap! The Audio jack adhesive is not allowed to reuse!
INSTALLATION
Place a new Audio Jack and new Audio jack adhesive in
correct position.

Working Instruction Repair Instruction Mechanical
1263-4086 Rev 6
© Sony Mobile Communications AB – Company Internal
18(53)
Replacement: Audio Jack & Audio jack adhesive
Align the Audio jack adhesive as shown and press to secure
its attachment.
Place the new Audio Jack with Audio jack adhesive in
correct position as shown.
Press to secure its position and attachment by using a Flex
Film Assembly Tool.
Do not touch the pins on Audio Jack!

Working Instruction Repair Instruction Mechanical
1263-4086 Rev 6
© Sony Mobile Communications AB – Company Internal
19(53)
Replacement
4.7 Audio Jack Sensor FPC Assy
Follow the 3.1 – 3.4 Disassembly instructions!
Carry out the Removal as described below.
Prepare the new Audio Jack Sensor FPC Assy.
Carry out the Installation as described below.
Follow the 5.2 – 5.5 Reassembly instructions!
REMOVAL
Unsnap the BtB connector by using a Front Opening Tool
and remove the Audio Jack Sensor FPC Assy.
INSTALLATION
Prepare the Audio Jack Sensor FPC Assy.
Snap the BtB connector.

Working Instruction Repair Instruction Mechanical
1263-4086 Rev 6
© Sony Mobile Communications AB – Company Internal
20(53)
Replacement
4.8 Core Unit Label
Follow the 3.1 Disassembly instructions!
Carry out the Removal as described below.
Prepare the new Core Unit Label.
Carry out the Installation as described below.
Follow the 5.5 Reassembly instructions!
REMOVAL
Copy old Core Unit Label information into the ‘LabelMake’
program.
Carefully remove the Label by using a pair of tweezers.
INSTALLATION
Check that the proper label format is loaded in the Zebra
printer and print a new Label by using the ‘LabelMake’
software.
One label only is allowed!