TCL Alcatel VFD 900 Repair Document Download Page 70

Page: 70 / 74

L2 Repair Document

TCL

Communication Ltd.

Rev.

VFD 900 Level 2 Repair Document

Page

1.3

70/74



Symptom sticker, high temperature adhesive or nonstandard label

on PCBA;

Note:

Summary of Contents for Alcatel VFD 900

Page 1: ...age 1 3 1 74 All rights reserved Transfer copy use or communication of this file is prohibited without authorization Idol4 S VF VFD 900 Note this manual is non contractual and TCL Communication Ltd can modify it without prior notice on the characteristics of described equipments ...

Page 2: ... 74 All rights reserved Transfer copy use or communication of this file is prohibited without authorization 1 3 2016 8 29 Update Xiaolong Yang 1 1 2016 5 3 Update Xiaolong Yang 1 0 2016 3 28 Draft creation Xiaolong Yang Rev Date Modification description Prepared By Checked By Approved By ...

Page 3: ...1 6 2 2 Pretest 8 3 Battery 17 3 1 Battery information 17 3 2 Battery test 19 3 3 Battery specification 20 4 Software download 21 4 1 Equipments requested when download 21 4 2 Install driver 21 4 3 SW download process 22 5 Disassembly and assembly VFD 900 26 5 1 ESD Safety 26 5 2 Disassembly tool 26 5 3 Disassembly process 27 5 4 Reassembly Process 43 5 5 Disassembly process evaluation 51 5 6 Disa...

Page 4: ...is prohibited without authorization 6 4 Vibrator issue 58 6 5 Touch panel issue 59 6 6 SIM recognize issue 60 6 7 TF card recognized issue 61 6 8 Main camera issue 62 6 9 Sub camera issue 63 6 10MIC issue 64 6 11Speaker issue 65 6 12USB connector issue 66 7 PCBA exchange 66 8 Other component exchange 67 9 Function Test 67 APPENDIX 1 Packaging Requirements 69 ...

Page 5: ...y use or communication of this file is prohibited without authorization 1 Level 2 repair process Reassembly Record in BIG End OK Retest OK OK Start Visual Inspection Warranty Check Pretest Failure confirm SW Upgrade Disassembly L2 Repair Retest Function test PCBA Replace NG NG NG Restore User Information Back up user data ...

Page 6: ...r on the handset enter 06 2 If the IMEI sticker in the back casing is not lost We should make sure that the IMEI number MUST be the same with the one on the IMEI sticker if not it s out of warranty policy Humidity sensitive label If humidity sensitive label is not good the cell phone will be considered as out of guarantee 1 Liquid was detected by humidity sensitive label 2 Position of humidity sen...

Page 7: ...nt casing furnished frame battery cover touch Lens keypad 3 Bump Bumps diameter 1mm on any surface including front casing decorate frame battery cover touch Lens keypad etc 4 Scratch Scratches length 3mm on any surface including the front casing decorate frame battery cover touch Lens keypad etc 5 Distortion Bend twisted or crushed on the h s cover casing or connectors etc 6 Broken Touch broken ca...

Page 8: ...on of the battery connector Replace it if necessary 5 If the cell phone asks to input NCK code this means it is SIM locked and can only be worked with dedicated SIM card Use the correct SIM card 6 Enter the phone code if necessary 7 Enter auto test in power off mode 8 Press 2886 in dial screen and then you will see the interface displaying the SW version Select Auto to start the auto test or selec...

Page 9: ...tinue SpeakBOX I It will run the test automatically and show TOP OK BOTTOM OK SpeakerBox Test PASS if it functions well II Press Pass to continue Finger Print I It will run the test automatically and show Test passed if it function well II Press Pass to continue Finger Print Enroll I Please touch and lift your finger on the sensor it will show Quality Good if the function is OK II Press pass to co...

Page 10: ...if it functions well II Press Pass to continue III You will see the LCD displays grey level if it functions well IV Press Pass to continue V You will see the LCD displays black if it functions well VI Press Pass to continue VII You will see the LCD displays white if it functions well VIII Press Pass to continue IX You will see the LCD displays grey if it functions well X Press Pass to continue Key...

Page 11: ...ons well Main Camera Press Pass to continue if the main camera functions well PDAF Camera Press Pass to continue if the PDAF camera functions well Camera Led I Camera LED front camera LED main camera LED1 LED2 will turn on if it functions well II Press Pass to continue Charge Led I The charge LED will turn on if it functions well II Press Pass to continue Hall I Flip cover according to the instruc...

Page 12: ... a voice prompt which introduces some emergency call numbers from the top speaker if it functions well VI Press Pass to continue VII You will hear a voice prompt which introduces some emergency call numbers from the bottom speaker if it functions well VIII Press Pass to continue IX Make a noise near the MAIN MIC you will hear it from the top receiver if it functions well X Press Pass to continue X...

Page 13: ...to instruction and it will say USB cable checked USB OK Charger OK Current xxx if it functions well II Press Pass to continue Accessory I Insert headset according to the instruction and you will hear a voice prompt which introduces some emergency call numbers through the headset left if it functions well II Press Pass to continue III You will hear a voice prompt which introduces some emergency cal...

Page 14: ...ss Pass to continue G Sensor I Put the handset towards up according to instruction II Press Pass to continue III Put the handset FACE DOWN DOWN LEFT RIGHT and FACE UP according to instruction and then the instruction will disappear if it functions well IV Press Pass to continue GyroScope I You can get some value such as Vx Vy Vz dx dy dz if it functions well II Press Pass to continue E Compass I P...

Page 15: ...ensor I Please shawdow the sensor according to instruction and it will say near OK far OK if it functions well II Press Pass to continue PSensor RAW I Please shawdow the sensor and it will show the value of PS RAW if it functions well II Press Pass to continue SIM I Insert SIM card and the phone will detect it if it functions well II Press Pass to continue Battery Temperature I It will display the...

Page 16: ...ontinue GPS I It will run GPS and search for satellite and then it will display info such as PRN SNR etc on the screen if it functions well II Press Pass to continue SoftwarePartion I It will show the phone s Image Mapping if it functions well II Press Pass to continue Calling I You will hear a voice prompt which introduces some emergency call numbers if it functions well II Press Hang up to conti...

Page 17: ...ercentage information and the charging information on the screen II Press function key Back to quit the test Firmware I You will see the firmware information on the screen such as TP II Press Pass to continue Factory Reset I You will see the screen shows This will eraser all data from your phone internal storage do you want factory reset II Press Pass to continue 3 Battery 3 1Battery information 1...

Page 18: ...perature and particularly on movement Idol 4S VF Power pack VFD 900 Standby time Paging 5 Voice talk time Pmin with 50 DTX Power pack Lithium 420hrs 2G 3G 4G 800 mins 2G Pmin minimum transmission power DTX no transmission during period of silence 4 Battery charge time For a normally discharged battery which has not been stored for long time the charge time listed as below table Mode Typical Charge...

Page 19: ...cted to a cell phone VFD 900 Cell phone status before charger connected ON OFF During charging Display lights up and following battery icon displayed Sequential icon flashing After charging charger connected Following fixed battery icon display Table Battery charge status on handset 2 If the display does not light on or battery icon does not flash when the charger or the cell phone s charge functi...

Page 20: ...ischarged with current 0 2C from 4 40V to 3 00V Charge Charge method CC CV Constant current Constant voltage Operating temp 0 10 C 10 45 C 45 60 C Current 0 2C Standard 0 5C Max 0 5C Standard 1C Max 0 2C Standard 0 5C Max Limited voltage 4 40V 4 40V 4 10V Discharge Current 0 2C Standard 1 5C Max Cut off voltage 3 00V Operating temp 20 60 C Storage at different temperature Storage temp Storage term...

Page 21: ...ad software for the handset which needs to be updated This downloading tool is called Sugar QCT_SP Thus internet access is necessary TS Website https css tclmobile cn 4 1 Equipments requested when download A handset with full power PC with windows system A USB cable 4 2 Install driver At the final step of SUGAR setup procedure it will remind you to install driver Please select Yes and then the dri...

Page 22: ... of this file is prohibited without authorization 4 3 SW download process Ⅰ Power off the handset and connect it with PC by USB cable and then open Sugar QCT_SP v10 4 3 you can get the latest version from TS website https css tclmobile cn Sugar QCT_SP login window looks like follow picture Input User name and Password and then press OK to log on ...

Page 23: ...3 23 74 All rights reserved Transfer copy use or communication of this file is prohibited without authorization Ⅱ Use Get Status function to check current SW vision available version from server and handset info such as IMEI PTM CU ref data code etc 1 Select the product models VFD 900 ...

Page 24: ...D 900 Level 2 Repair Document Page 1 3 24 74 All rights reserved Transfer copy use or communication of this file is prohibited without authorization 2 Press Get Status button Remark You can get Date code of the headset by using Get Status function ...

Page 25: ...ved Transfer copy use or communication of this file is prohibited without authorization III Power off the handset and reconnect it with PC by USB cable then click Upgrade upgrade process will start automatically IV Upgrade finished The phone will turn on automatically if the download is finished successfully ...

Page 26: ...ion of this file is prohibited without authorization 5 Disassembly and assembly VFD 900 5 1 ESD Safety Please wear static loop or static glove 5 2 Disassembly tool You may use the following tools during the disassembly and reassembly procedure Plastic Flake Tweezers Screwdriver Soldering iron Suction cup Hot wind gun Pry bar SIM Card Tray Pin ...

Page 27: ...s of disassembly VFD 900 are as below Step1 Separate the SIM tray first by using SIM Card Tray Pin Step2 Separate the back cover by using hot wind gun 1 Turn on the hot wind gun to level Ⅲ and adjust the temperature of hot wind gun to 75 2 Use hot wind gun to heat up the edges of left right side uniformly Notice temperature 75 Air Level 3 Height 15mm Time about 30s Turn on the wind to Level Ⅲ Adju...

Page 28: ...or communication of this file is prohibited without authorization 3 Pull up the battery cover with the suction cup the largest angle between front casing and battery cover do not exceed 30 and then use the plastic flake to slide along the left right side of battery cover carefully the depth of flake infix at 1mm Heating area 15mm ...

Page 29: ...served Transfer copy use or communication of this file is prohibited without authorization 4 Adjust the temperature of hot wind gun to 130 5 Use hot wind gun to heat up the edges of top bottom side uniformly Notice temperature 130 Air Level 3 Height 15 30mm Time about 30s Adjust the temperature to up down ...

Page 30: ...FD 900 Level 2 Repair Document Page 1 3 30 74 All rights reserved Transfer copy use or communication of this file is prohibited without authorization 6 Insert pry bar and separate battery cover and furnished frame carefully Heating area 15mm 30mm ...

Page 31: ...Communication Ltd Rev VFD 900 Level 2 Repair Document Page 1 3 31 74 All rights reserved Transfer copy use or communication of this file is prohibited without authorization Disconnect finger print FPC connector with tweezers ...

Page 32: ...inds of screws as below Remark There have two box conductive rings under the screw in yellow circle No Description Part number Qty Screw PM Machine PM1 4X0 3PXL2 5 Flat Head D2 6x0 5 type 0 With Thread Lock SWCH18A HV380 480 HV 380 480 Planting White ZN 1 4 BMA1425264C3 9 Screw PM Machine 1 2 0 25P L3 0mm Flat Head Ф 2 2 T0 5mm type 十字形 With Nylok SWCH18A HV 350 450 Plating White ZN N A SEOUL BMA1...

Page 33: ...L2 Repair Document TCLCommunication Ltd Rev VFD 900 Level 2 Repair Document Page 1 3 33 74 All rights reserved Transfer copy use or communication of this file is prohibited without authorization ...

Page 34: ...out authorization Step5 Remove the TOP BOTTOM speak box with tweezers Step 6 Disconnect several FPCs connector and coaxial cable with tweezers and then pry up the main PCBA and remove it from front casing HAC FPC connector Audio jack FPC connector Side key FPC connector Battery connector Sub FPC connector LCD TP FPC connector Coaxial cable Pry up the top speaker box from here ...

Page 35: ...L2 Repair Document TCLCommunication Ltd Rev VFD 900 Level 2 Repair Document Page 1 3 35 74 All rights reserved Transfer copy use or communication of this file is prohibited without authorization ...

Page 36: ...l rights reserved Transfer copy use or communication of this file is prohibited without authorization Step 7 Remove the battery from front casing There are 3 battery stickers between battery and front casing refer to below picture 1 Pull the battery sticker horizontally and stick it to pry bar ...

Page 37: ...s reserved Transfer copy use or communication of this file is prohibited without authorization 2 Press the battery carefully and spin pry bar slowly then pull out the battery sticker completely 3 Repeat these steps until all of battery stickers are pulled out and then remove battery from front casing ...

Page 38: ...ge 1 3 38 74 All rights reserved Transfer copy use or communication of this file is prohibited without authorization Or you can remove the battery by using the JIG PN WAA34D0QJ003 For details please refer to the video which located in CSS web find the video search in CSS as below ...

Page 39: ... needed for emergency II The battery can be re used after disassembly if it is normal III Please be careful for the battery sticker when you are pulling out them do not pull off the battery sticker If sticker is cracked when pulling out must change new battery Step 8 Pry up vibrator with tweezers firstly Disconnect sub FPC and coaxial cable with tweezers then pry up the sub PCBA and remove it from...

Page 40: ...Rev VFD 900 Level 2 Repair Document Page 1 3 40 74 All rights reserved Transfer copy use or communication of this file is prohibited without authorization Step 9 Remove Sidekey FPC HAC FPC Audio jack FPC volume key and power key with tweezers ...

Page 41: ... file is prohibited without authorization Step 10 Remove main camera and front camera by tweezers and push out camera deco with pry bar Notice If only replace the camera lens which has scratch or crack not to disassemble battery cover please put the camera lens downward and remove the shards of camera lens with tweezers carefully then replace a new one ...

Page 42: ...Document Page 1 3 42 74 All rights reserved Transfer copy use or communication of this file is prohibited without authorization Step 11 Disassemble complete Remark For details of disassembly steps please refer to the file Disassembly of Idol 4S on CSS Repair tips Video ...

Page 43: ...ication of this file is prohibited without authorization 5 4 Reassembly Process Please make reference to the disassembly process for assembly reverse an order of the disassembly steps Jig list PN description Picture WAA00002U002 Press battery cover after assembly WAA61KAU6002 paste adhesive paper jig WAA61KATG002 Back cover press adaptor ...

Page 44: ... the process Please notice the distinction between the anode and the cathode when assembling vibrator the red line is the positive electrode and other one is negative electrode There are 2 kinds of screws please pay attention not to mix the screws up when reassemble the handset There will be at risk to damage the screen if lock the wrong screw Remark There have two box conductive rings under the s...

Page 45: ...L2 Repair Document TCLCommunication Ltd Rev VFD 900 Level 2 Repair Document Page 1 3 45 74 All rights reserved Transfer copy use or communication of this file is prohibited without authorization ...

Page 46: ...el 2 Repair Document Page 1 3 46 74 All rights reserved Transfer copy use or communication of this file is prohibited without authorization Assemble the foam of back cover Please refer to the method of Idol 4S 1 Stick top box batt foam and bot box batt foam ...

Page 47: ...Document Page 1 3 47 74 All rights reserved Transfer copy use or communication of this file is prohibited without authorization 2 Place the battery deco foam B and battery deco foam D on the JIG PN WAA61K0HU002 then fix them on the positioning column Positioning column ...

Page 48: ...VFD 900 Level 2 Repair Document Page 1 3 48 74 All rights reserved Transfer copy use or communication of this file is prohibited without authorization 3 Place the battery cover on the JIG and press it for a few seconds 4 Remove battery cover away ...

Page 49: ...l rights reserved Transfer copy use or communication of this file is prohibited without authorization 5 Place the battery deco foam A and battery deco foam C on the JIG then fix them on the positioning column 6 Place the battery cover on the JIG and press it for a few seconds Positioning column ...

Page 50: ...Document TCLCommunication Ltd Rev VFD 900 Level 2 Repair Document Page 1 3 50 74 All rights reserved Transfer copy use or communication of this file is prohibited without authorization 7 Remove battery cover away ...

Page 51: ...61K0TG002 for Idol 4S Pressure 40KG Time 30s Remark For details of this JIG please refer to the file Assemble and press the battery cover of Idol 4S on CSS Repair tips Video 5 5 Disassembly process evaluation We list the VFD 900 parts disassembly time technique levels and disassembly methods as below for technique levels Class 1 signifies easy to disassembly Class 2 signifies normal to disassembly...

Page 52: ...p Bottom speak box 6s Tweezers Class 1 Main PCBA 15s Tweezers Plastic Flake Class 1 Battery 120s Pry bar suction cup Class 2 Sub PCBA 15s Tweezers Class 1 Sub FPC 3s Tweezers Class 1 Coaxial cable 3s Tweezers Class 1 Vibrator 3s Tweezers Soldering iron Class 1 Side key FPC 3s Tweezers Class 1 HAC FPC 2s Tweezers Class 1 Audio jack FPC 5s Tweezers Class 1 front camera rubber 2s Tweezers Class 1 Vol...

Page 53: ...L2 Repair Document TCLCommunication Ltd Rev VFD 900 Level 2 Repair Document Page 1 3 53 74 All rights reserved Transfer copy use or communication of this file is prohibited without authorization ...

Page 54: ... of this file is prohibited without authorization Please get the latest L2 SPL in Forlog system 6 Level 2 repair This chapter describes the Level 2 repair that can be done without any diagnostic equipment All these repairs only refer to the hardware part In case the Level 2 repair can t solve the problem or the PCBA is damaged exchange the PCBA ...

Page 55: ...heck whether power key FPC connector is damaged Power on failure Replace PCBA Charge for 15 minutes check whether can power on Replace power key FPC N N Reweld or Replace power key FPC connector Y Check whether battery status is good N Replace it with a new battery Y Check whether the connection between battery and battery connector is good N Reassemble battery Y Check whether battery connector is...

Page 56: ...prohibited without authorization 6 2 Charge issue Replace battery N N N Check whether the voltage of the battery is 0V and Charge for 15 minutes check whether battery is good C h e c k w h e t h e r b a t t e r y connector is good Check whether USB connector is normal Reweld or replace USB connector replace battery connector Y Y Y Charging failure Y Replace PCBA ...

Page 57: ...on of this file is prohibited without authorization 6 3 Display issue Check whether the connection b e t w e e n LCD a n d LCD connector is good N N Check whether LCD connector is normal Y Check whether LCD is n o r m a l i n t e r c h a n g e method N Reassemble LCD Reweld or replace LCD connector Change LCD Y Y Replace PCBA Display failure Y ...

Page 58: ...g function failure Y Check whether the connection between Vibrator and PCBA is good N Reweld Vibrator N Change Vibrator Check whether Vibrator is normal Y N Replace sub PCBA Check whether sub PCBA is normal Y Check whether the connection between sub FPC sub PCBA and main PCBA is good N Reassemble sub FPC Y N Replace sub FPC Check whether sub FPC is normal Y N Reweld or replace sub FPC connector Ch...

Page 59: ...f this file is prohibited without authorization 6 5Touch panel issue Check whether the connection between TP and TP connector is good N Y Reassemble TP Y Y Replace PCBA Touch function failure Y N Change TP C h e c k w h e t h e r T P i s n o r m a l i n t e r c h a n g e method N Reweld or replace TP connector Check whether TP connector is normal ...

Page 60: ...ansfer copy use or communication of this file is prohibited without authorization 6 6SIM recognize issue Check whether the SIM card is good N N C h e c k w h e t h e r S I M c a r d connector is good Re assemble or change SIM card Re weld or change SIM card connector Y Replace PCBA Y SIM card can t be recognized Y ...

Page 61: ...served Transfer copy use or communication of this file is prohibited without authorization 6 7TF card recognized issue Check whether the TF card is good N Check whether the TF card connector is good Change TF card Replace PCBA Y T F c a r d c a n t b e recognized Y N N Re weld or change TF card connector ...

Page 62: ...is prohibited without authorization 6 8Main camera issue Check whether the connection between main camera and main camera connector is good N Y N Check whether main camera is normal Y Check whether main camera connector is normal N Reassemble main camera Replace main camera Reweld or replace Main camera connector Y Replace PCBA Main camera function failure Y ...

Page 63: ...rohibited without authorization 6 9Sub camera issue Check whether the connection between sub camera and sub camera connector is good N Y N Check whether sub camera is normal Y C h e c k w h e t h e r s u b c a m e r a connector is normal N Reassemble sub camera Replace sub camera Reweld or replace sub camera connector Y Replace PCBA Sub camera function failure Y ...

Page 64: ...d or replace MIC N Y Reassemble or replace main FPC Check whether the connection between main FPC and main FPC connector is good Y No sound emitting or sometimes no sound emitting noises were heard by other side during the call recording function failure Y N Replace PCBA N Reweld or replace sub MIC Y If there is sub MIC please check whether sub MIC is normal N Reweld or replace main FPC connector ...

Page 65: ...Transfer copy use or communication of this file is prohibited without authorization 6 11 Speaker issue No ringing play music failure or hands free sound failure Y Replace PCBA Y Check whether speaker is normal N Replace speaker Y Check whether the connection between speaker and PCBA is good N Reassemble speaker ...

Page 66: ...nnector Reassemble or replace sub FPC Reweld or replace sub FPC connector Check whether the connection between sub FPC and sub FPC connector is good Y Charging failure Y Replace PCBA Y 7 PCBA exchange If Level 2 repair does not solve the failure it is mandatory to change the PCBA and follow the process as below 1 Collect the PCBA without accessories LCD and camera 2 Get a new PCBA from the swap st...

Page 67: ...hange The other components exchange such as 1 Antenna bracket 2 Vibrator 3 Speaker 4 Camera 5 Other related mechanical components Please follow the detail steps 4 3 Disassembly and assembly process But need to be very careful to handle the components with related special tool or jig especially replacing new components It is better to handle it with plastic tools plastic tweezers and wedge etc Besi...

Page 68: ...All rights reserved Transfer copy use or communication of this file is prohibited without authorization 1 Cosmetic aspect of the handset 2 The Software Technical sticker state on the Board 3 Switch on the handset 4 Default welcome message 5 Press 2886 on the idle screen to start the auto test ...

Page 69: ...r communication of this file is prohibited without authorization APPENDIX 1 Packaging Requirements 1 Any L3 PCBA which has appearance like below cases is not acceptable 1 The PCBA which shielding cover is rusty or distortion copper peel off 2 Smudge on PCBA such as soldering flux rudimental glue handwriting burn scratch and so on ...

Page 70: ... Ltd Rev VFD 900 Level 2 Repair Document Page 1 3 70 74 All rights reserved Transfer copy use or communication of this file is prohibited without authorization 3 Symptom sticker high temperature adhesive or nonstandard label on PCBA Note ...

Page 71: ...nication of this file is prohibited without authorization a Nonstandard label means broken label label with handwriting dirty label label pasted in the wrong place etc b L2E label IMEI label and PCBA label are acceptable to be kept on PCBA only under the condition that these labels are intact clean and smoothly pasted in the right place ...

Page 72: ...tact IMEI label should be retained on the PCBA IMEI label PCBA label Note Ⅰ Please remove the IMEI label if it is dirty corrugated or broken and then clean the PCBA and make sure there s no residuum before return it to L3 Ⅱ PCBA label must be retained on PCBA no matter what the status even it is dirty corrugated or broken it is 3 Packing requirements a Wrap PCBA with anti static bag Note please ke...

Page 73: ...ne and 5pcs for small one Meanwhile use Wrinkled tape marking the material code and qty to distinguish the PCBA of different code c Put this box into a bigger carton and put a cardboard on top this is to avoid the PCBA to drop around during transportation d Symptom list of all returned PCBAs is requested refer to below table Please send the electronic edition to all relevant receivers departments ...

Page 74: ... file is prohibited without authorization No Country Project Name Commercial Reference IMEI SN Symptom decription Symptom code 1 eg SPAIN Pisco 916X 2AYGES1 8623870109873 43 can t power on TON If you have any question or problem please feel free to contact us Thanks for your cooperation TCL Communication Ltd Global Customer Service TS Dept May 3th 2016 ...

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TCL Alcatel VFD 900, Repair Document

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