TCL Pixi4-6 3G Repair Document
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TCL Pixi4-6 3G Repair Document

TCL Pixi4-6 3G Repair Document

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TCL
L2 Repair Document
Communication Ltd.
Pixi4-6 3G
8050X_D_G&E
Note: this manual is non-contractual and TCL Communication Ltd. can modify it without prior
notice on the characteristics of described equipments.
Rev.
Page
1.0
1/68
8050X_D_G&E Level 2 Repair Document
All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.

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  • Page 1 L2 Repair Document Communication Ltd. Pixi4-6 3G 8050X_D_G&E Note: this manual is non-contractual and TCL Communication Ltd. can modify it without prior notice on the characteristics of described equipments. Rev. Page 1/68 8050X_D_G&E Level 2 Repair Document All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.
  • Page 2 L2 Repair Document Communication Ltd. Update 2015-12-19 Draft creation Mani Lee Rev. Date Modification description Prepared By Checked By Approved By Rev. Page 2/68 8050X_D_G&E Level 2 Repair Document All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.

  • Page 3: Table Of Contents

    L2 Repair Document Communication Ltd. Content Level 2E repair process .................... 4 Warranty Check and Visual Inspection ..............5 2.1 Warranty confirmation of L1..................5 2.2 Visual mechanical check ..................6 2.3 Pretest ........................6 Battery ........................11 3.1 Battery information ....................11 3.2 Battery test ......................

  • Page 4: Level 2E Repair Process

    L2 Repair Document Communication Ltd. 1 Level 2E repair process Start Visual Inspection Warranty Check Pretest & Failure confirm Back up user data SW Upgrade Function test Disassembly L2 Repair L2E Repair Retest Retest PCBA Replace Reassembly Retest Restore User Information Record in BIG Rev.

  • Page 5: Warranty Check And Visual Inspection

    L2 Repair Document Communication Ltd. 2 Warranty Check and Visual Inspection 2.1 Warranty confirmation of L1  IMEI sticker check: 1) Power on the handset, enter ”Settings” -> “About phone” -> “Status” -> “IMEI/IMEI SV” 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;...

  • Page 6: Visual Mechanical Check

    L2 Repair Document Communication Ltd. 2.2 Visual mechanical check Mechanical warranties check items: Corrosion  Corrosion on the USB connector, SIM connector, and other metal surfaces。 Hole (diameter > 1mm)  Holes on any surface, including the front casing, furnished frame, battery cover, touch Lens, keypad…...
  • Page 7 L2 Repair Document Communication Ltd. with dedicated SIM card. Use the correct SIM card. Enter the phone code if necessary. If power on, test step by step with the auto test code: Open “Calculator” application, and input “0x0-0+=” to enter MMI test mode, and then you will see the interface displaying the SW version and SN.
  • Page 8 L2 Repair Document Communication Ltd. Press “Pass” to continue. LCD BACKLIGHT You will see the screen flash if it functions well Press “Pass” to continue. Main Camera You will see the LCD displays the picture that back camera catch if it functions well; Press “Pass”...
  • Page 9 L2 Repair Document Communication Ltd. You will hear one record in left discrete; The “Volume Down “and “Volume Up” will display grey if it functions well. III. Press ”Pass” ,you will hear one record in right discrete; The “Volume Down “and “Volume Up” will display grey if it functions well. IV.
  • Page 10 L2 Repair Document Communication Ltd. IV. Press “Pass” to continue; Battery Temperature It will display “Battery temperature should between: 20~50”, “current is xxx” “Battery content should between: 30~80%”, “current is xxx” “Battery Voltage is 3.704V”, “Battery Present is xxx” if it functions well; Press ”Pass”...

  • Page 11: Battery

    L2 Repair Document Communication Ltd. End the TEST and go back the calculator screen 3 Battery 3.1 Battery information 1) Battery picture SCUD battery Hyperpower battery Rev. Page 11/68 8050X_D_G&E Level 2 Repair Document All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.
  • Page 12 L2 Repair Document Communication Ltd. Battery feature Model Element Capacity Battery Li Lithium 2850mAh Battery life The bellowing table shows the nominal battery life respectively in standby and talking mode. These typical values are expressed in normal temperature with battery initially full charged and under good ratio coverage.

  • Page 13: Battery Test

    L2 Repair Document Communication Ltd. Battery charge time For a normally discharged battery which has not been stored for long time, the charge time listed as below table. Battery type (RF standby Typical Charge time mode) within 3.5hours Soft pack Note: ...

  • Page 14: Battery Specification

    L2 Repair Document Communication Ltd. Following fixed battery icon display : After charging (charger connected) 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 function is defective with mechanical or electronics.
  • Page 15 L2 Repair Document Communication Ltd. Rev. Page 15/68 8050X_D_G&E Level 2 Repair Document All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.
  • Page 16 L2 Repair Document Communication Ltd. 2) Battery specification for Hyperpower Rev. Page 16/68 8050X_D_G&E Level 2 Repair Document All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.
  • Page 17 L2 Repair Document Communication Ltd. Rev. Page 17/68 8050X_D_G&E Level 2 Repair Document All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.

  • Page 18: Warning Of Battery Disassembling

    L2 Repair Document Communication Ltd. 3.4 WARNING of Battery disassembling Potential for fire or burning. Do not puncture, crush, or heat the battery. Strictly avoid using sharp tool to pry up battery. Fire extinguisher is needed for emergency. The battery can be re-used after disassembly if it is normal. 4 Software download 5 It is authorized to download software for the handset which needs to be updated.

  • Page 19: Sw Download Process

    L2 Repair Document Communication Ltd. 4.3. SW download process Login the Sugar MTK_SP V3.3.4, then select the 8050 model: Rev. Page 19/68 8050X_D_G&E Level 2 Repair Document All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.
  • Page 20 L2 Repair Document Communication Ltd. II. Click the „Get Status‟ button, it will display the SW version , IMEI, Cu ref etc of the handset, press “Yes “ to continue Rev. Page 20/68 8050X_D_G&E Level 2 Repair Document All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.
  • Page 21 L2 Repair Document Communication Ltd. Rev. Page 21/68 8050X_D_G&E Level 2 Repair Document All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.
  • Page 22 L2 Repair Document Communication Ltd. III. Click the “Upgrade” button. Online upgrade process starting: IV. Upgrade finished: Rev. Page 22/68 8050X_D_G&E Level 2 Repair Document All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.

  • Page 23: Disassembly And Assembly 8050E

    L2 Repair Document Communication Ltd. 5 Disassembly and assembly 8050E 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: Rev. Page 23/68 8050X_D_G&E Level 2 Repair Document All rights reserved.

  • Page 24: Disassembly Process

    L2 Repair Document Communication Ltd. Screwdriver Tweezers Plastic Flake (TORX6) 5.3 Disassembly process The steps of disassembly 8050E are as below. Step1: Take off the back cover by using plastic flake. Rev. Page 24/68 8050X_D_G&E Level 2 Repair Document All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.
  • Page 25 L2 Repair Document Communication Ltd. Step2: Take off the 14 screws on the phone: Rev. Page 25/68 8050X_D_G&E Level 2 Repair Document All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.
  • Page 26 L2 Repair Document Communication Ltd. Rev. Page 26/68 8050X_D_G&E Level 2 Repair Document All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.
  • Page 27 L2 Repair Document Communication Ltd. Step3: Disconnect the battery, RF cable and FPCs connector Rev. Page 27/68 8050X_D_G&E Level 2 Repair Document All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.
  • Page 28 L2 Repair Document Communication Ltd. Step4: Disconnect the vibrator and receiver by using soldering iron. (Please note the positive and negative electrode), Step 5: Remove the PCBA Rev. Page 28/68 8050X_D_G&E Level 2 Repair Document All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.
  • Page 29 L2 Repair Document Communication Ltd. Rev. Page 29/68 8050X_D_G&E Level 2 Repair Document All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.
  • Page 30 L2 Repair Document Communication Ltd. Note: There are 5 high temperature tapes (as below images shows) on the main PCBA, please DO remember to paste it back after dissemble. Rev. Page 30/68 8050X_D_G&E Level 2 Repair Document All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.
  • Page 31 L2 Repair Document Communication Ltd. Step 6: Disconnect the main camera and front camera. Step7: Remove battery There are two kinds of battery status. If the battery status is same as below PIC 1, please replace the battery along with the front casing (PN: F-G1DY0A0040) directly.
  • Page 32 L2 Repair Document Communication Ltd.  How to remove the battery in PIC 2? 1) Pull the two battery stickers horizontally by manually operated. Note: Press the battery and pull out the battery sticker slowly and carefully until it is completely removed.
  • Page 33 L2 Repair Document Communication Ltd. 2) Remove the battery from the front casing Rev. Page 33/68 8050X_D_G&E Level 2 Repair Document All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.
  • Page 34 L2 Repair Document Communication Ltd. Potential for fire or burning. Do not puncture, crush, or heat the battery. Strictly avoid using sharp tool to pry up battery. Fire extinguisher is needed for emergency. II. The battery can be re-used after disassembly if it is normal. III.

  • Page 35: Reassembly Process

    5.5 Disassembly process evaluation We list the Pixi4-6 3G 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 and Class 3 signifies hard to disassembly.

  • Page 36: Level 2 Repair

    L2 Repair Document Communication Ltd.  Please get the latest SPL in Forlog system. 7 Level 2 repair This chapter describes the Level 2 repair that can be done without any diagnostic equipment.  Display failure Rev. Page 36/68 8050X_D_G&E Level 2 Repair Document All rights reserved.
  • Page 37 L2 Repair Document Communication Ltd. Display failure Check whether the connection Reassemble LCD b e t w e e n LCD a n d LCD connector is good Reweld or replace LCD Check whether LCD connector is connector normal C h e c k w h e t h e r LCD i s Change LCD n o r m a l （...
  • Page 38 L2 Repair Document Communication Ltd.  Vibrating function failure Vibrating function failure Check whether Vibrator is Change Vibrator normal Check whether the connection Reassemble Vibrator between Vibrator and PCBA is good Clean the contact of Check whether contact of PCBA PCBA is clean Replace PCBA...
  • Page 39 L2 Repair Document Communication Ltd.  Touch function failure Touch function failure Check whether the connection Reassemble TP between TP and TP connector is good 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 Change TP method)
  • Page 40 L2 Repair Document Communication Ltd. SIM card can’t be recognized  S I M c a r d c a n ’ t b e recognized Re-assemble or change Check whether the SIM card is SIM card good C h e c k w h e t h e r S I M c a r d Re-weld or change SIM connector is good card connector...
  • Page 41 L2 Repair Document Communication Ltd. TF card can’t be recognize  T F c a r d c a n ’ t b e recognized Check whether the TF card is Change TF card good C h e c k w h e t h e r t h e T F c a r d connector is good Change TF card connector and see if problem can be solved...
  • Page 42 L2 Repair Document Communication Ltd.  Main camera function failure Main camera function failure Check whether the connection Reassemble main camera between main camera and Main camera connector is good Check whether main camera is Replace main camera normal C h e c k w h e t h e r M a i n c a m e r a Reweld or replace Main connector is normal camera connector...
  • Page 43 L2 Repair Document Communication Ltd.  Sub camera function failure Sub camera function failure Check whether the connection between sub camera and sub Reassemble sub camera camera connector is good Check whether sub camera is Replace sub camera normal C h e c k w h e t h e r s u b c a m e r a R e w e l d o r r e p l a c e s u b connector is normal camera connector...

  • Page 44: L2 Enhance Repair

    L2 Repair Document Communication Ltd.  Charging failure Charging failure Check whether the voltage of the battery is 0V and Charge for 15 minutes, check Replace battery whether battery is good. check whether the charge indicator is normal Reweld or replace Check whether USB USB connector connector is normal...

  • Page 45: Position Of L2 Enhance Components On Pcba

    L2 Repair Document Communication Ltd. 8.1 Position of L2 enhance components on PCBA Rev. Page 45/68 8050X_D_G&E Level 2 Repair Document All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.
  • Page 46 L2 Repair Document Communication Ltd. Rev. Page 46/68 8050X_D_G&E Level 2 Repair Document All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.

  • Page 47: Trouble Shooting For Common Failures

    L2 Repair Document Communication Ltd. 8.2 Trouble shooting for common failures NOTE: 1) Because the main PCBA will become damp after long time storage, please use oven to bake the main PCBA firstly if it has been stored for more than 7days (oven temperature: 105℃, Time: >8H). Otherwise it may cause the PCBA blister easily when you heat part of the PCBA by using hot wind gun.
  • Page 48 L2 Repair Document Communication Ltd. 2) Interchange method means using a new component to test the function in order to verify whether the old component is defected. 3) Please use hot wind gun to reweld or disassemble/assemble the component mentioned afterwards. (hot wind gun temperature: 330℃, Air Level: 2~3, Height: around 10mm, Time: less than 60s)
  • Page 49 L2 Repair Document Communication Ltd. Check whether the connection Reassemble LCD between LCD and J703 LCD connector is good Check whether J0703 is normal Replace J703 C h e c k w h e t h e r LCD i s n o r m a l （...
  • Page 50 L2 Repair Document Communication Ltd. Check whether side key FPC Replace side key FPC is normal Reweld or replace J753 Check whether J753 is normal Replace new battery and check the charge Check whether battery is function etc. normal (such as volt etc.) C h e c k w h e t h e r J 2 0 1 i s Reweld or replace J201 normal...
  • Page 51 L2 Repair Document Communication Ltd. 8.2.3 TP function failure Check whether the connection Reassemble TP between TP and J609 is good Check whether TP is normal Change （interchange method） Check whether J609 is normal Reweld or replace J609 C h e c k w h e t h e r U 2 0 1 i s R e w e l d o r r e p l a c e U201PMU normal...
  • Page 52 L2 Repair Document Communication Ltd. 8.2.4 Voice transmitting issue Replace MIC Check whether MIC is good Check whether the connection Replace sub PCBA between furnished FPC and sub PCBA is good Check whether the furnished FPC Replace furnished FPC between main PCBA and sub PCBA is good Reweld or replace J701 Check whether J701 is normal...
  • Page 53 L2 Repair Document Communication Ltd. 8.2.5 SD card is not recognized Check whether the SD card is Reassemble SD card well inserted C h e c k w h e t h e r J 3 0 0 i s Replace J300 normal R e w e l d o r r e p l a c e...
  • Page 54 L2 Repair Document Communication Ltd. Check whether the connection Reassemble main between main camera and J701 camera is good C h e c k w h e t h e r F l a s h L E D Reweld or replace H0901 is normal H0901 Reweld or replace...
  • Page 55 L2 Repair Document Communication Ltd. 8.2.9 Front camera function failure Check whether the connection Reassemble front camera between front camera and J608 is good Check whether J608 is normal Reweld or replace J608 Check whether front camera is Replace front camera normal (Interchange method) C h e c k w h e t h e r U 2 0 1 i s R e w e l d o r r e p l a c e...
  • Page 56 L2 Repair Document Communication Ltd. 8.2.10 Charging failure Check whether USB cable is C h e c k w h e t h e r charging Replace USB cable normal indicator displays OK Check whether USB connector R e w e l d o r r e p l a c e is normal USB connector Replace new battery and...
  • Page 57 L2 Repair Document Communication Ltd. 8.2.11 USB is not recognized Check whether USB cable Replace USB cable is normal Check whether USB connector R e w e l d o r r e p l a c e is normal USB connector Check whether the connection R e p l a c e s u b...
  • Page 58 L2 Repair Document Communication Ltd. Check whether antenna spring Clean antenna spring is good R e p l a c e f urnished Check whether Main frame FPC antenna is normal C h e c k w h e t h e r t h e connection between sub Replace sub PCBA PCBA and RF cable is...
  • Page 59 L2 Repair Document Communication Ltd. C h e c k w h e t h e r P-sensor Reassemble or replace rubber is normal P-sensor rubber Reweld or replace U903 Check whether U903 is normal R e w e l d o r r e p l a c e C h e c k w h e t h e r U 2 0 1 i s U201 PMU normal...

  • Page 60: L2 Enhance Spare Part List

    L2 Repair Document Communication Ltd. Check whether headset Replace headset is normal Check whether J915 is normal Reweld or replace J915 R e w e l d o r r e p l a c e C h e c k w h e t h e r U 2 0 1 i s U201 PMU normal Replace PCBA...
  • Page 61 L2 Repair Document Communication Ltd. Rev. Page 61/68 8050X_D_G&E Level 2 Repair Document All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.

  • Page 62: Pcba Exchange

    L2 Repair Document Communication Ltd. 9 PCBA exchange If Level 2 repair does not solve the failure, it is mandatory to change the PCBA and follow the process as below. Collect the PCBA (without accessories, LCD and camera). Get a new PCBA from the swap stock. Reuse those accessories to assemble the mobile. Fill in the record sticker with IMEI number, fault code, short code, Hardware Technical Level and software version.

  • Page 63: Function Test

    L2 Repair Document Communication Ltd. 10 Function test During the function test, the following items must be checked and validated. Cosmetic aspect of the handset, The Software Technical sticker state on the Board Switch on the handset Default welcome message Open “Calculator”...
  • Page 64 L2 Repair Document Communication Ltd. × ×  2) Smudge on PCBA, such as soldering flux, rudimental glue, handwriting, burn, scratch and so on; × × Rev. Page 64/68 8050X_D_G&E Level 2 Repair Document All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.
  • Page 65 L2 Repair Document Communication Ltd. × × ×  3) Symptom sticker, high temperature adhesive or nonstandard label on PCBA; Note: a. Nonstandard label means broken label, label with handwriting, dirty label, label pasted in the wrong place, etc. b. L2E label, IMEI label and BSN sticker 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 66 L2 Repair Document Communication Ltd. ×  4) PCBA with liquid or mildew. × Packing requirements a) Wrap PCBA with anti-static bag Note: please keep the anti-static bag clean and intact, especially not to paste any label on it. Rev. Page 66/68 8050X_D_G&E Level 2 Repair Document...
  • Page 67 L2 Repair Document Communication Ltd. × √ b) Choose box according to shipping quantity. Each slot usually put 4 or 5pcs. (4pcs for big one and 5pcs for small one). Meanwhile, use Wrinkled tape (marking the material code and qty) to distinguish the PCBA of different code.
  • Page 68 L2 Repair Document Communication Ltd. 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. Feb 15 , 2016 Rev. Page 68/68 8050X_D_G&E Level 2 Repair Document...

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