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L2E Repair Document

TCL

Communication Ltd.

Rev.

9015B

Level 2E Repair Document

Page

1.0

28/41

8.3

Trouble shooting for common failures

8.3.1 Display failure

U201

PMU Chipset

Can’t power on/charge

D202

Zener Diode

Can’t power on

U203

LED Driver

No back light

L201/L202

Power Inductor

Can’t power on

L207

Power Inductor

No back light

L208

Power Inductor

No LCD display

FL606/7/8/9/10

COMMON MODE

ESD FILTER

No LCD display

U503

LNA for GPS/GNSS

No GPS signal

U501

Wireless Connecitivity

No WiFi

U601

Triaxis Acceleration

Sensor

Gravity control

U603

Touch IC

No touch function

VR625

Transient Voltage

Suppressors

No USB

J128

TP FPC Connector

No touch function

Содержание alcatel Pixi4-7 4G BELL

Страница 1: ...1 All rights reserved Transfer copy use or communication of this file is prohibited without authorization Pixi4 7 4G BELL 9015B Note this manual can be modified without prior notice on the characteris...

Страница 2: ...vel 2E Repair Document Page 1 0 2 41 All rights reserved Transfer copy use or communication of this file is prohibited without authorization 1 0 2 Sep 2016 Draft creation Peter Hanson Rev Date Modific...

Страница 3: ...ttery information 6 3 2 WARNING OF BATTERY disassembling 7 4 Software download 8 5 Disassembly and assembly 9003X 8 5 1 ESD Safety 8 5 2 Disassembly tool 8 5 3 Disassembly process 9 5 4 Disassembly No...

Страница 4: ...on the handset enter Settings About tablet Status IMEI information 2 Input 06 on the dial mode 3 There two IMEI sticker positions on the device Position 1 in the back casing Position 2 in the SD slot...

Страница 5: ...edicated SIM card Use the correct SIM card 4 Enter the phone code if necessary 5 If power on test step by step with the auto test code or using Smart Diagnosis Tool to proceed with the test a Using au...

Страница 6: ...of this file is prohibited without authorization b Using Smart Diagnosis Tool to proceed with the test For detail instruction of test with Smart Diagnosis Tool please refer to Smart Diagnosis Manual i...

Страница 7: ...ork Power pack Lithium 1000hours 5Hours 3G 10Hours 2G Pmin minimum transmission power DTX no transmission during period of silence 4 Battery charge time For a normally discharged battery which has not...

Страница 8: ...which needs to be updated This downloading tool is called Sugar MTK_SP V3 3 5 Handset Software can be downloaded from TS website via it Thus internet access is necessary TS Website https css tclmobile...

Страница 9: ...Page 1 0 9 41 All rights reserved Transfer copy use or communication of this file is prohibited without authorization 5 3 Disassembly process The steps of disassembly 9015B are as below Step1 Take off...

Страница 10: ...Repair Document Page 1 0 10 41 All rights reserved Transfer copy use or communication of this file is prohibited without authorization Step2 Take off the 14 rews on the teblet Step3 Disconnect the si...

Страница 11: ...TCLCommunication Ltd Rev 9015B Level 2E Repair Document Page 1 0 11 41 All rights reserved Transfer copy use or communication of this file is prohibited without authorization Step4 Pry up the PCBA wit...

Страница 12: ...Rev 9015B Level 2E Repair Document Page 1 0 12 41 All rights reserved Transfer copy use or communication of this file is prohibited without authorization Step 5 Remove MIC rubber Antenna and sub boar...

Страница 13: ...is prohibited without authorization Step 7 Disassemble complete Note All the components listed below are spare parts for L2 All the connectors could be disassembled by hot wind gun hot wind gun temper...

Страница 14: ...L2E Repair Document TCLCommunication Ltd Rev 9015B Level 2E Repair Document Page 1 0 14 41 All rights reserved Transfer copy use or communication of this file is prohibited without authorization...

Страница 15: ...please follow up the battery disassembly guidance strictly and pay high attention to the WARNING part Do not disassemble battery unless it is necessary 3 Put all the spare parts on right position don...

Страница 16: ...sembly Difficulty Class Remark Furnished battery cover 6s Plastic flake Class 2 Screws 9s Screwdriver Class 1 Main PCBA 15s Tweezers Plastic Flake Class 2 Main camera 2s Screwdriver Plastic Flake Clas...

Страница 17: ...L2E Repair Document TCLCommunication Ltd Rev 9015B Level 2E Repair Document Page 1 0 17 41 All rights reserved Transfer copy use or communication of this file is prohibited without authorization...

Страница 18: ...Repair Document Page 1 0 18 41 All rights reserved Transfer copy use or communication of this file is prohibited without authorization 7 Level 2 repair This chapter describes the Level 2 repair that c...

Страница 19: ...rohibited without authorization 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 conne...

Страница 20: ...f this file is prohibited without authorization 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...

Страница 21: ...s prohibited without authorization 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 FURFRONT CASING TP C h e c k w...

Страница 22: ...er copy use or communication of this file is prohibited without authorization 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 c...

Страница 23: ...fer copy use or communication of this file is prohibited without authorization 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...

Страница 24: ...this file is prohibited without authorization 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 c...

Страница 25: ...hout authorization Sub camera function failure 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...

Страница 26: ...e the Level 2 repair can t solve the problem For L2E repair center please proceed with L2E repair process in L2E repair center For L2 repair center please exchange the PCBA 8 L2 Enhance repair Before...

Страница 27: ...verify whether the old component is defected 3 Please use hot wind gun to re weld or disassemble assemble the component mentioned afterwards hot wind gun temperature 330 Air Level 2 3 Height around 1...

Страница 28: ...power on charge D202 Zener Diode Can t power on U203 LED Driver No back light L201 L202 Power Inductor Can t power on L207 Power Inductor No back light L208 Power Inductor No LCD display FL606 7 8 9...

Страница 29: ...bited without authorization C h e c k w h e t h e r t h e connection between LCD and J125 is good N Y Check whether LCD is normal interchange method N Reassemble LCD Change LCD Replace Main PCBA Check...

Страница 30: ...Check whether battery connector is normal N R e a s s e m b l e o r replace side key Replace new battery and check the charge function etc Reweld or replace battery connector Check whether battery is...

Страница 31: ...copy use or communication of this file is prohibited without authorization 8 3 3 TP function failure Check whether the connection between TP connector is good N Y N Check whether TP is normal intercha...

Страница 32: ...hibited without authorization 8 3 4 No sound Check whether side key is good N Y N Y C h e c k w h e t h e r VR460 VR461 is normal N Reassemble or replace side key R e w e l d o r r e p l a c e J753 J7...

Страница 33: ...ation 8 3 5 SIM card can t be recognized Check whether the SIM card is well inserted N Y N Check whether SIM connector is normal Reassemble SIM card Reweld or replaceSIM connector Replace main PCBA Y...

Страница 34: ...nication of this file is prohibited without authorization 8 3 7 Main camera function failure Check whether the connection between main camera and J701 is good N Reassemble main camera Y Check whether...

Страница 35: ...ation of this file is prohibited without authorization 8 3 8 Front camera function failure Check whether the connection between front camera and J702 is good N Y Reassemble front camera Y Check whethe...

Страница 36: ...USB connector is normal N Reweld or replace USB connector Check whether charging indicator displays OK N Y N Replace new battery and check the charge function etc Check whether battery is normal such...

Страница 37: ...zation 8 3 11 Headset failure Check whether audio Jack is normal N Reweld or replace audio Jack Check whether headset is normal interchange method N Y Replace headset Replace main PCBA Y 8 3 13 G sens...

Страница 38: ...rization 8 3 15 FM defect Replace main PCBA Check whether U501 is normal N Reweld or replace U501 Y 8 4L2 enhance spare part list Below table lists 9015B L2E spare parts which is just for reference NO...

Страница 39: ...L2E Repair Document TCLCommunication Ltd Rev 9015B Level 2E Repair Document Page 1 0 39 41 All rights reserved Transfer copy use or communication of this file is prohibited without authorization...

Страница 40: ...llect the PCBA without accessories LCD and camera MIC should be enclosed when you exchange the PCBA 2 Get a new PCBA from the swap stock Reuse those accessories to assemble the mobile 3 Fill in the re...

Страница 41: ...ing items must be checked and validated 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 Open Calculator applica...

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