TCL alcatel Pixi4-7 4G BELL Technical manual

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Pixi4-7 4G BELL
9015B
Note: this manual can be modified without prior notice on the characteristics of described
equipment. Please download from Support website for the latest versions.

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1.0 2-Sep-2016 Draft creation Peter Hanson
Rev.
Date
Modification description
Prepared By
Checked By
Approved By

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Content
1Level 2E repair process............................................................................................4
2Warranty Check and Visual Inspection ...................................................................4
2.1 Warranty confirmation of L1.....................................................................................4
2.2 Visual mechanical check..........................................................................................5
2.3 Pretest........................................................................................................................5
3Battery........................................................................................................................6
3.1 Battery information...................................................................................................6
3.2 WARNING OF BATTERY disassembling..................................................................7
4Software download ...................................................................................................8
5Disassembly and assembly 9003X..........................................................................8
5.1 ESD Safety.................................................................................................................8
5.2 Disassembly tool.......................................................................................................8
5.3 Disassembly process................................................................................................9
5.4 Disassembly Notice: ...............................................................................................15
5.5 Reassembly process...............................................................................................15
5.6 Disassembly process evaluation...........................................................................16
6Disassembly Complete...........................................................................................16
7Level 2 repair...........................................................................................................18
8L2 Enhance repair...................................................................................................26
8.1 Repair notification...................................................................................................26
8.2 Position of L2 enhance components on PCBA ....................................................27
8.3 Trouble shooting for common failures..................................................................28
8.4 L2 enhance spare part list......................................................................................38
9PCBA exchange.......................................................................................................40
10 NOTE for defective PCBAs.....................................................................................40
11 Functional test.........................................................................................................41

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1 Level 2E repair process
Please refer to <L2E repair process> in support (CSS/RSH) website for details.
2 Warranty Check and Visual Inspection
2.1 Warranty confirmation of L1
IMEI sticker check:
1) Power 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 cover
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 sensitive sticker.

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2.2 Visual mechanical check
Please refer to <Visual mechanical check> in support (CSS/RSH) website for details.
2.3 Pretest
1) Check that the SIM card and SD card are set correctly.
2) Power on the tablet.
3) If the tablet 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.
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 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. Select “Auto” to start the auto test, or
select “MANU” to do the MMI test manually.
If one of the tests failed during “Auto” test mode, it will display “Failed: xxx, Press ‘Next’ to go
on test; Press ‘RETEST’ to retest this item; Press ‘END’ to Power off.”
For detail instruction of each test item, please refer to <MMI TEST> video in
support (CSS/RSH) website for details.

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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 > in
support (CSS/RSH) website.
3Battery
3.1 Battery information
1) Battery picture
2) Battery feature
Model Element Capacity
Battery Li Lithium 3240mAh

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3) 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. Battery range depends on the network
characteristics, the ambient temperature and particularly on movement.
Pixi 4-7 4G
Power pack
9015B
Standby time (hours) Talking time（depend on different
network）
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 been stored for long time, the
charge time listed as below table.
Battery type (RF standby
mode)
Typical Charge
Soft pack within 3.5hours
Note:
If the battery is new, charge it before use. Battery icon will appear after charging
a short time.
If the battery is deeply discharged, battery icon will appear after charging several
minutes and accompany with a slight sound.
3.2 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 cannot be reused when you disassemble it.

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4 Software download
It is authorized to download software for the handset 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.cn/.
Please refer to <instructions of SUGAR Tool> video in support (CSS/RSH) website.
5 Disassembly and assembly 9003X
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:

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5.3 Disassembly process
The steps of disassembly 9015B are as below.
Step1: Take off the back cover by using plastic flake. Disconnect the battery with tweezers.

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Step2: Take off the 14 rews on the teblet:
Step3: Disconnect the side key, main camera, front camera, speaker and FPCs connector.