Alcatel One Touch 902 Technical manual

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L2 Repair Document
Almond/one touch 902/902(A/S)
Note: this manual is non-contractual and TCT can modify it without prior notice on the
characteristics of described equipments.

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1.1
2012-4-27
Upgrade the software download
Tingting He
1.0
2012-2-21
Draft creation
Ting ting He
Rev.
Date
Modification description
Prepared By
Checked By
Approved By

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1 Level2 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

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2 Warranty Check and Visual Inspection
2.1 Warranty confirmation of L1
1) IMEI sticker check:
a) The IMEI number MUST be the same with the one on the IMEI sticker. If not, it‟s out of warranty
policy
b) IMEI label should not be
Removed
Scratched
Unreadable
Un-approved or un-provided by Alcatel.
2) Humidity sticker: Liquid detection on humidity sticker.
2.2 Visual mechanical check
1) Corrosion
Corrosion on the USB connector, SIM connector, and other metal surfaces。
2) Hole (diameter > 1mm)

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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 can not 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
with dedicated SIM card. Use the correct SIM card.
6) Enter the phone code if necessary.
7) After the phone power on, test step by step with the auto test code:

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Press *#2886# in dial screen and select “Start” to begin the testing. Then you will see the
interface displaying the version. Press pass to continue
If one of the testing failed, it will retest from the first one.
TRACABILITY Test
Ⅰ. PT1&PT2&BT&MMI&FT are "1"
Ⅱ. Press “Pass” to continue.
LCD MIRE/BLACK/GREYCHART/WHITE Test
Ⅰ. You will see the LCD color changes if it functions well
Ⅱ. Press “Pass” to continue.
Battery temp Test
Ⅰ. Battery temperature will be displayed on the screen
Ⅱ. Press “Pass” to continue
KEYPAD Test.
Ⅰ. Press the key displayed on the screen. The key on the screen will disappear when you
press it if it functions well
Ⅱ. Press “Pass” to continue.
LCD BackLight Test.
Ⅰ. the screen backlight will flashing.
Ⅱ. Press “Pass” to continue.
Keypad BackLight Test.
Ⅰ. the keypad backlight will flashing.
Ⅱ. Press “Pass” to continue.
Flash LED Light Test.
Ⅰ. the light near the camera will flashing.
Ⅱ. Press “Pass” to continue.
VIBRATOR Test
Ⅰ. You can feel the phone‟s vibrating if it functions well.
Ⅱ. Press “Pass” to continue.
CAMERA Test
Ⅰ. Scene will be shown on the screen.

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Ⅱ. Press “Pass” to continue.
Mic & Receiver Test.
Ⅰ. You will hear the sound from the receiver.
Ⅱ. Press “Pass” to continue.
Audio Test.
Ⅰ. You will hear the melody if it functions well.
Ⅱ. Press “Pass” to continue.
SIM Test
Ⅰ. Insert the SIM card and the phone will detect it if it functions well
Ⅱ. Press “Pass” to continue
MMC/SD card Test
Ⅰ. Insert the Memory card and the phone will detect it if it functions well
Ⅱ. Press “Pass” to continue
Charge Test
Ⅰ. Insert the charge and the phone will detect it if it functions well
Ⅱ. Press “Pass” to continue
USB Test
Ⅰ. Insert the charge and the phone will detect it if it functions well
Ⅱ. Press "Pass" to continue
Headset Test
Ⅰ. Insert the headset and make the voice, you will hear the sound from the headset
Ⅱ. Press "Pass" to continue
FM Test
Ⅰ. FM will auto search a Freq
Ⅱ. Press "Pass" to continue
BT Test
Ⅰ. The phone will running the BT and show the BT address on screen
Ⅱ. Press "Pass" to continue

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4.3 Disassembly process
The steps of disassembly one touch 902 are as below.
This module should only be disassembled from bottom to top.
Step 1: Remove the battery cover and battery.
Step2: Take off the 7 screws from the furnished frame by screw driver.
Step 3: Separate the furnished frame from furnished front casing.
Screwdriver
(TORX6)
Soldering iron
Camera Jig

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Step 4：Remove main antenna、speaker、T --card gate and side keys from furnished frame.
Step 5：Remove furnished keypad FPC & LCD Module FPC connector, and extract the camera by camera jig.

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