TCL 5056O Technical manual

L2 Repair Document TCLCommunication Ltd.
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POP4-5.5C ATT
5056O
Note: this manual is non-contractual and TCL Communication Ltd. can modify it without prior
notice on the characteristics of described equipments.

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1.1 Update
1.0 2016-02-15 Draft creation Mani Lee Abby Zhou Damon Han
Rev. Date Modification description Prepared By Checked By Approved By

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Content
1Level 2E repair process............................................................................................4
2Warranty Check and Visual Inspection ...................................................................5
2.1Warranty confirmation of L1.....................................................................................5
2.2Visual mechanical check..........................................................................................6
2.3Pretest........................................................................................................................7
3Battery......................................................................................................................12
3.1Battery information.................................................................................................12
3.2Battery test ..............................................................................................................14
3.3Battery specification...............................................................................................16
3.4WARNING of Battery disassembling .....................................................................17
4Software download .................................................................................................18
4.1. Equipments requested when download：............................................................18
4.2. Handset driver installation .....................................................................................18
4.3. SW download process............................................................................................19
5 Disassembly and assembly 5056O............................................................................22
5.1 ESD Safety...............................................................................................................22
5.2 Disassembly tool.....................................................................................................22
5.3 Disassembly process...............................................................................................22
6Level 2 repair...........................................................................................................22
5.4 Reassembly process................................................................................................30
5.5 Disassembly process evaluation............................................................................31
7Disassembly Complete...........................................................................................31
8L2 Enhance repair...................................................................................................40
8.1Position of L2 enhance components on PCBA ....................................................41
8.2Trouble shooting for common failures..................................................................42
8.3L2 enhance spare part list......................................................................................54
9PCBA exchange.......................................................................................................54
10Other component exchange...................................................................................54
10Function test............................................................................................................55

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1 Level 2E 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
L2E Repair
Retest
OK
NG

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2 Warranty Check and Visual Inspection
2.1 Warranty confirmation of L1
¾IMEI 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; if
not, it’s out of warranty policy.
¾Humidity 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).Three position of humidity sensitive sticker.

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2.2 Visual mechanical check
Mechanical warranties check items:
1) Corrosion
Corrosion on the USB connector, SIM connector, and other metal surfaces。
2) Hole (diameter > 1mm)
Holes on any surface, including the front 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.

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5) Distortion
Bend, twisted or crushed on the h/s, cover/casing or connectors, etc.
6) Broken
Touch broken, casing/cover broken, etc.
7) Dropped
Keypad tear off, touch lens, connectors dropped, etc.
8) Gap
External physical damage relating to abnormal use, like front case and frame opened
9) Others
Damage caused by disassembly ,wrong part assembly, loss of components
Use in abnormal environment like high temperature causing plastic melts
2.3 Pretest
1) Check that the SIM card and SD card are set correctly.
2) Power on the cell phone.
3) 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.
4) Enter the phone code if necessary.
5) If power on, test step by step with the auto test code:
Press *#2886# in dial screen 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.”
Traceability
I. You can get information such as BT, CU-REF, PTH ,MMI,etc.,
II. Press “pass” key to continue.
RAW Data
I. You can see Raw data test is running;

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II. Press “pass” key to continue;
Touch Panel
I. “Please draw in the yellow area” according to instructions
II. Press “PASS” to continue.
LCD
I. You will see the LCD display three colors - RED, GREEN and BLUE - if it
functions well;
II. Press “Pass” to continue.
III.You will see the LCD display greychart if it functions well.
IV.Press “Pass” to continue.
V. You will see the LCD display black if it functions well.
VI.Press “Pass” to continue.
VII. You will see the LCD display white if it functions well.
VIII. Press “Pass” to continue.
IX.You will see the LCD display grey if it functions well.
X. Press “Pass” to continue.
Keyboard
I. You will see the key of the V+, V-, and power, click the corresponding key, then
the key turn gray on the screen.
II. Press “Pass” to continue.
LCD BACKLIGHT
I. You will see the screen flash if it functions well
II. Press “Pass” to continue.
Key Backlight
I. You will see the keypad flash if it functions well
II. Press “Pass” to continue.

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Front Camera
I. You will see the LCD displays the picture that front camera catch if it functions
well;
II. Press “Pass” to continue.
Main Camera
I. You will see the LCD displays the picture that back camera catch if it functions
well;
II. Press “Pass” to continue;
Camera led
I. You will see the Camera led light on if it functions well;
II. Press “Pass” to continue;
Charge Led
I. It will display “Please check charge LED" if it functions well.
II. Press “Pass” to continue;
AUDIO
I. You will hear piece of record if it functions well;
II. Press ”Pass” to continue;
Vibrator
You can feel the vibration if it functions well.
Memory Card
I. Insert SD card and the phone will detect it if functions well;
II. Press “Pass” to continue;
Accessories
I. Insert the headset.
II. You will hear one record in left discrete;
The “Volume Down “and “Volume Up” will display grey if it functions well.

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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. Press ”pass” to continue;
V.You will hear piece of record if it functions well;
VI. remove your headset
VII. Press ”Pass” to continue;
FM
I. You will hear the sound from on channel when you insert earphoneif it functions
well;
II. Remove the ear phone then press “Pass” to continue;
USB/ Charger
I. Insert USB cable according to instruction, then it will say “USB:OK
Charger :OK” ;
II. Remove USB cable according to instruction
III.Press “Pass” to continue;
G-Sensor
I. Put the handset up and towards up according to instruction;
II. Put the handset towards the directions indicated by instructions; it will say “All
positions checked” after you following all the directions if it if it functions well;
III. Press “Pass” to continue;
Light Sensor
Press “Pass “to continue if it functions well.
Proximity Sensor
II. It will display “Please shadow the sensor “ ,and follow the instruction if it
functions well.
II. Press “Pass” to continue;