TCL Alcatel DTEK 50 STH100-1 User manual

L2 Repair Enhance Document TCLCommunication Ltd.
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Neon
DTEK 50 STH100-1/STH100-2
PRD62980/R188
PRD62981/R189

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Note: this manual is non-contractual and TCL Communication Ltd. can modify it without prior
notice on the characteristics of described equipments.
1.0
2016/6/21
Draft creation
Peter
Rev.
Date
Modification description
Prepared By
Checked By
Approved By

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Content
1Level 2 repair process ..............................................................................................4
2Warranty Check and Visual Inspection ...................................................................5
2.1 Warranty confirmation of L1.....................................................................................5
2.2 Visual mechanical check..........................................................................................5
2.3 Pretest........................................................................................................................6
3. Software download .................................................................................................14
3.1 Equipments requested when download：.............................................................14
3.2 Install of download Tool...........................................................................................15
3.3 SW download process.............................................................................................16
4 Disassembly and assembly PRD62980 ...................................................................23
4.1 ESD Safety................................................................................................................23
4.2 Disassembly tool......................................................................................................23
4.3 Disassembly process...............................................................................................24
4.4 Disassembly process evaluation...........................................................................38
5Disassembly Complete...........................................................................................39
6Level 2 repair...........................................................................................................41
6.1 power on issue.........................................................................................................44
6.2 Charge issue.............................................................................................................45
6.3 Display issue ............................................................................................................46
6.4 Vibrator issue ..........................................................................................................47
6.5 Touch panel issue...................................................................................................48
6.6 SIM recognize issue................................................................................................49
6.7 TF card recognized issue.......................................................................................50
6.8 Main camera issue ..................................................................................................51
6.9 Sub camera issue....................................................................................................52
6.10MIC issue .................................................................................................................53
6.11Speaker issue..........................................................................................................54
6.12USB connector issue..............................................................................................55
7Level 2 Enhance repair ...........................................................................................56
7.1 Position of L2 enhance components on main PCBA and sub PCBA...................56
7.2 Trouble shootings for common failures.................................................................58
7.2.1 Power on issue......................................................................................................59
7.2.2 Charge issue..........................................................................................................60
7.2.3 Display issue .........................................................................................................61
7.2.4 SIM/TF recognized issue.......................................................................................62
7.2.5 Main camera issue ................................................................................................63
7.2.6 Sub camera issue..................................................................................................64
7.2.7 MIC issue................................................................................................................65
7.2.8 Speaker issue ........................................................................................................66
7.3 Level 2 enhance spare part list ...............................................................................66
8PCBA exchange.......................................................................................................66
9Other component exchange...................................................................................67
10 Function Test.............................................................................................................67
APPENDIX.......................................................................................................................67

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1 Level 2 repair process
The user data will be clear in this step
IMEI sticker and Humidity sensitive
labe check,refer to point 2.1.

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2 Warranty Check and Visual Inspection
2.1 Warranty confirmation of L1
IMEI sticker check:
1) Power 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 sensitive sticker.
(near Vibrator) (near SIM card tray)
2.2 Visual mechanical check
Mechanical warranties check items:
1) Corrosion

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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.
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 is set correctly.
2) Insert the battery.
3) Power on the cell phone.
4) If the cell phone cannot power on, visually check the condition 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

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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 select “MANU” to do the MMI test manually.
If one of the test failed during “Auto” test mode, it will ask you “Restart?”, press “YES” to restart the
auto test from the first one and “NO” to exit the auto test, while “NEXT” to continue the auto test.
Traceability
I. You can get some information such as IMEI, CU-REF, PTM, Date Code, etc.
II. Press “Pass” to continue.
SMARTPA CAL
I. It will running the test automatically and show “TOP OK; BOTTOM OK;
SmartPA Test PASS”if it functions well;
II. Press “PASS”to continue.
Speak Box
I. It will run the test automatically and show “TOP OK;BUTTOM OK”; SpeakerBox
Test PASS if it functions well
II. Press ”Pass”to continue;
Raw Data
I. It will running the test automatically, don’t touch the screen during test and it will
show “Pass”if it functions well;
II. Press “PASS”to continue.
Touch Panel
I. “Please draw on 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

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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.
Keyboard
I. Press the key displayed on the screen. The key on the screen will turn grey
when you press it if it functions well;
II. Press “Pass” to continue.
LCD Backlight
I. The screen backlight will be flashing if it functions well;
II. Press “Pass” to continue.
Front Camera
Press “Pass”to continue if the front camera functions well.
Main Camera
Press “Pass”to continue if the main camera functions well.
Camera Led
I. Camera LED will turn on if it functions well;
II. Press “Pass”to continue.
Charge Led

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I. The charge LED(LED1&LED2& front LED) will turn on if it functions well;
II. Press “Pass”to continue.
Hall
I. Flip cover according to the instruction if it functions well;
II. Press “Pass” to continue.
Audio
I. You will hear a voice prompt which introduces some emergency call numbers
from the top receiver if it functions well;
II. Press “PASS”to continue;
III.You will hear a voice prompt which introduces some emergency call numbers
from the bottom receiver if it functions well;
IV.Press “Pass”to continue;
V. You will hear 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;
XI.Make a noise near the SEC MIC, you will hear it from the bottom receiver if it
functions well;
XII. Press “Pass”to continue.
Vibrator
I. You can feel the phone’s vibrating if it functions well;

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II. Press “Pass”to continue.
NFC
I. Close the NFC test card on battery cover and it will show “NFC: Detected; ID:
xxxx”if it functions well;
II. Press “Pass”to continue.
Memory Card
I. Insert SD card and the phone will detect it if it functions well;
II. Press “Pass”to continue.
USB/Charger
I. Insert USB cable according 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 call numbers
through the headset right if it functions well;
IV.Press “Pass”to continue;
V. Make a noise near the headset mic, you will hear it from headset if it functions
well;
VI.Press “Pass”to continue;
VII. Remove headset according to the instruction and press “Pass”to continue.
FM
I. Insert headset according to the instruction and you will hear FM playing and FM
frequency will be displayed on the screen if it functions well;