Sony Ericsson C702 User manual

Working Instruction, Mechanical
1213-5329 1
Company Internal ©Sony Ericsson Mobile Communications AB 1(56)
Working Instruction, Mechanical
Applicable for C702, C702a & C702c
CONTENTS
1Introduction ..............................................................................3
1.1 Equipment.....................................................................4
1.2 General cautions ..........................................................5
1.3 Adhesives......................................................................5
2Disassembly.............................................................................6
2.1 Overview........................................................................6
2.1.1 Battery Cover and Battery.....................................................7
2.1.2 Screw Cover Assembly.........................................................9
2.1.3 Frame Assembly .................................................................11
2.1.4 M2 Cover & Front Cover Assembly.....................................13
2.1.5 Speaker Box & Antenna Assembly......................................15
2.1.6 LCD Frame Assembly.........................................................17
3Replacements.........................................................................21
3.1 Battery Cover..............................................................22
3.2 Battery .........................................................................22
3.3 Screw Cover................................................................22
3.4 Frame...........................................................................22
3.5 M2 Cover and Front Cover.........................................22
3.6 Speaker Box and Antenna.........................................22
3.7 LCD Frame ..................................................................22
3.8 Vibrator........................................................................23
3.9 Main Rubber Ring.......................................................24
3.10 Volume Key.................................................................25
3.11 Camera Key.................................................................26
3.12 On/Off Key...................................................................27
3.13 RF Hole Adhesive.......................................................28
3.14 BT Antenna .................................................................29
3.15 ESD Gasket.................................................................30
3.16 Main Keypad Cover....................................................31
3.17 Co-Brand Label...........................................................33
3.18 Main Keypad ...............................................................34
3.19 Flash FPC....................................................................35
3.20 Main Antenna..............................................................36
3.21 Keyboard.....................................................................38
3.22 Receiver.......................................................................40
3.23 LCD Gasket.................................................................41

Working Instruction, Mechanical
1213-5329 1
©Sony Ericsson Mobile Communications AB 2(56)
3.24 Sony Ericsson Icon....................................................42
3.25 3.2 MP AF Camera......................................................43
3.26 Liquid Intrusion Indicator..........................................45
3.27 Label ............................................................................46
4Reassembly............................................................................47
4.1 Overview......................................................................47
4.1.1 Speaker Box Assy & PCBA.................................................48
4.1.2 LCD frame Assy & PCBA....................................................49
4.1.3 Front Cover Assy.................................................................50
4.1.4 M2 Cover.............................................................................51
4.1.5 Frame Assy.........................................................................52
4.1.6 Screw Cover Assy...............................................................53
4.1.7 Battery & Battery Cover.......................................................54
5Revision history.....................................................................56

Working Instruction, Mechanical
1213-5329 1
Company Internal ©Sony Ericsson Mobile Communications AB 3(56)
1 Introduction
C702

Working Instruction, Mechanical
1213-5329 1
Company Internal ©Sony Ericsson Mobile Communications AB 4(56)
1.1 Equipment
SPECIAL TOOLS
Special tools:
•NTZ 122 459 Torque Screwdriver (or equivalent)
•NTZ 122 288 Torx Bits No. 6
•NTZ 112 1052 JCIS No. 0 Screw Bit
•NTZ 112 302/2 Front Opening Tool
•1206-7115 Camera removal tool
•NTZ 112 590 Guitar Pick
•NTZ 122 521 Flex Film Assembly Tool
STANDARD TOOLS
Standard tools have to be locally purchased
•Dentist Hook
•ESD Tweezers
•Nylon Pointer
ESD EQUIPMENT
Protect the phone from ESD damages whenever it has
been opened by using:
•ESD-Wristband
•ESD-Gloves
LABEL EQUIPMENT
The following special equipment is required when replacing
or installing a new Label:
•Hot Air Flow Solder Station
•Zebra Printer connected to Computer

Working Instruction, Mechanical
1213-5329 1
Company Internal ©Sony Ericsson Mobile Communications AB 5(56)
1.2 General cautions
The following cautions are considered to be generic for all phone models and will not be repeated in
the Disassembly, Replacements and Reassembly sections:
•SWITCH OFF THE PHONE AND REMOVE ANY MEMORY STICK BEFORE THE START OF THE DISASSEMBLY!
•KEEP ALL CONTACT SURFACES CLEAN!
•BE CAREFUL WHEN USING TOOLS LIKE THE DENTIST HOOK,TWEEZERS,OPENING TOOLS,GUITAR PICK
ETC.TO AVOID SCRATCHES OR DAMAGES TO THE EXTERIOR AND INTERIOR PARTS OF THE PHONE!
•BE CAREFUL NOT TO DAMAGE ANY CONTACT SPRINGS!
•REMEMBER TO REMOVE THE PROTECTION FOILS ON NEW PARTS SUCH AS THE FRONT COVER AND LCD!
•NEVER TOUCH THE DISPLAY GLASS!
•USE AIR BLOW EQUIPMENT TO KEEP THE FRONT WINDOW AND DISPLAY MODULE DUST FREE!
1.3 Adhesives
Use Dentist Hook and/or Tweezers to remove the old Adhesives.
Clean the surface with isopropyl alcohol before attaching the new Adhesives.

Working Instruction, Mechanical
1213-5329 1
Company Internal ©Sony Ericsson Mobile Communications AB 6(56)
2 Disassembly
When you are going to replace a part being listed in Replacements, the instruction of that section
usually begins by directing you to this Disassembly section with a specification of the instructions you
have to carry out in order to disassemble the phone as far as needed before returning to
Replacements for the actual replacement.
2.1 Overview
The disassembly is done in the following sequence:
1. Battery Cover (a) Battery (b)
2. Screw Cover Assy
3. Frame Assy
4. M2 Cover
5. Front Cover Assy
6. Speaker Box & Antenna
7. LCD Frame Assy (a) PCBA (b)
Start
Done
REPLACEMENTS
DISASSEMBLY REASSEMBLY
Contents
page

Working Instruction, Mechanical
1213-5329 1
Company Internal ©Sony Ericsson Mobile Communications AB 7(56)
2.1.1 Battery Cover and Battery
Prepare to release the Battery Cover.
Use Nylon Pointer to turn the Latch anticlockwise.
Unlock the Latch as shown in picture.
Lift up the Battery Cover at the bottom end.

Working Instruction, Mechanical
1213-5329 1
©Sony Ericsson Mobile Communications AB 8(56)
Battery continued
Grip the Battery at the bottom end using fingers.
Lift up the Battery at the bottom end and remove it.

Working Instruction, Mechanical
1213-5329 1
©Sony Ericsson Mobile Communications AB 9(56)
2.1.2 Screw Cover Assembly
Slide the Camera Lens Cover.
Open the Camera Lens Cover using fingers.
OPEN THE CAMERA LENS COVER BEFORE STARTING
DISASSEMBLY!OTHERWISE,THE CONTACT SPRINGS WILL BE
DAMAGED DURING DISASSEMBLY!
Remove the two Screws using JCIS No.0 Screw Bit.
Insert Guitar Pick as shown in picture and unlatch the snap
hooks along the left side of the Screw Cover Assy as shown
by the arrow.
IF NECESSARY,SLIDE BACK AND FORTH UNTIL ALL HOOKS ARE
UNLATCHED!

Working Instruction, Mechanical
1213-5329 1
©Sony Ericsson Mobile Communications AB 10(56)
Screw Cover Assembly continued
Repeat this at the right side.
Slide along the top to unlatch the snap hooks.
TAKE CARE WHEN REMOVING THE SCREW COVER THAT WATER
DOES FLOW OFF SCREW COVER INTO THE PHONE BACK COVER
AREA!
Carefully lift up the Screw Cover Assy.

Working Instruction, Mechanical
1213-5329 1
©Sony Ericsson Mobile Communications AB 11(56)
2.1.3 Frame Assembly
CHECK FIRSTLY IF THE M2 MEMORY STICK HAS BEEN
REMOVED BEFORE CONTINUING!
Use Torx bit no. 6 to remove the four screws.
Insert the Guitar Pick at the left bottom as shown in picture
and slide along the side to unlatch the snap hooks.
IF NECESSARY,SLIDE BACK AND FORTH UNTIL ALL THE HOOKS
ARE UNLATCHED!
Repeat this for the left side.
Repeat this for the right bottom.

Working Instruction, Mechanical
1213-5329 1
©Sony Ericsson Mobile Communications AB 12(56)
Frame Assembly continued
Repeat this for the right side.
Lift up the Frame Assembly.

Working Instruction, Mechanical
1213-5329 1
©Sony Ericsson Mobile Communications AB 13(56)
2.1.4 M2 Cover & Front Cover Assembly
Push the M2 Cover using Front Opening Tool or fingers.
Pull out the M2 Cover using Flex Film Assembly Tool or
fingers.
Insert the Nylon Pointer at the right side as shown in picture
to loose the Core Unit from the Front Cover Assy.
Insert the Front Opening Tool at the left side as shown in
picture to loosen the Core Unit from the Front Cover Assy.

Working Instruction, Mechanical
1213-5329 1
©Sony Ericsson Mobile Communications AB 14(56)
Front Cover continued
Remove the Core Unit by lifting it up from the top as shown
by the arrow.
Gently remove the Core Unit from the Front Cover.

Working Instruction, Mechanical
1213-5329 1
©Sony Ericsson Mobile Communications AB 15(56)
2.1.5 Speaker Box & Antenna Assembly
Insert the Front Opening Tool to unlatch the right side
hooks between the Speaker Box and the PCBA.
Insert Front Opening Tool to unlatch the right top hooks
between the Speaker Box and the PCBA.
Insert Front Opening Tool to unlatch the left side hooks
between the Speaker Box and the PCBA.
Lift up the Speaker Box from the PCBA.

Working Instruction, Mechanical
1213-5329 1
©Sony Ericsson Mobile Communications AB 16(56)
Speaker Box & Antenna Assembly continued
Use the Front Opening Tool to unlatch the Flash FPC
Connector as the arrow shows in the picture.
Gently remove the Speaker Box from the PCBA.

Working Instruction, Mechanical
1213-5329 1
©Sony Ericsson Mobile Communications AB 17(56)
2.1.6 LCD Frame Assembly
Insert the Front Opening Tool to unlatch the LCD Connector
as shown in the picture.
Insert the Front Opening Tool to release the right side hook
between the PCBA and the LCD Frame.
Insert the Front Opening Tool to release the right top Hook
between the PCBA and the LCD Frame.
Insert the Front Opening Tool to release the left bottom
hook between the PCBA and the LCD Frame.

Working Instruction, Mechanical
1213-5329 1
©Sony Ericsson Mobile Communications AB 18(56)
LCD Frame continued
Insert the Front Opening Tool to release the left middle
hooks between the PCBA and the LCD Frame.
Insert the Front Opening Tool to release the top hooks
between the PCBA and the LCD Frame.
Insert the Front Opening Tool to release the right middle
hooks between the PCBA and the LCD Frame.
BE CAREFUL WHEN UNLATCHING THE LAST HOOK -THE LCD
FRAME CAN JUMP OFF THE PCBA!
Insert the Front Opening Tool to release the left bottom
hooks between the PCBA and the LCD Frame.

Working Instruction, Mechanical
1213-5329 1
©Sony Ericsson Mobile Communications AB 19(56)
LCD Frame continued
Check that all snap hooks between the PCBA and the LCD
Frame are unlatched.
Lift up the PCBA from the LCD Frame.
BE CAREFUL NOT TO DAMAGE THE LCD FLEX!
Find the LCD Connector between the PCBA and the LCD
Frame.
Use the Front Opening Tool to release the LCD Connector.

Working Instruction, Mechanical
1213-5329 1
©Sony Ericsson Mobile Communications AB 20(56)
LCD Frame continued
Lift up the LCD Frame from the PCBA.