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User Manual for TCL models including: T611B 6GB Plus 6GB 256GB 6.78 Inch Dual SIM Smart Phone, T611B, 6GB Plus 6GB 256GB 6.78 Inch Dual SIM Smart Phone, 6.78 Inch Dual SIM Smart Phone, Dual SIM Smart Phone, Smart Phone
TCL 50 SE
File Info : application/pdf, 26 Pages, 2.41MB
DocumentDocumentService Manual
TCL Communication Technology Holdings Ltd.
TCL 50 SE
T611B/B1
Warning:
Space Gray
Midnight Blue
All features, functions, specifications, and other product information provided in this document, including but not limited to the advantages, aesthetics, price, components, performance, availability and capacity of the product are subject to change without notice.
TCL will not be responsible for any damage to the product, injury or other safety issues caused by the result of repair by an unauthorized service provider, user repair or unprofessional product repair.
Any damage to the product resulted from an attempt to repair the product by any person or 3rd party other than TCL authorized service provider will not be covered by warranty.
Information and instructions given in this document are provided to highly qualified professionals repair centres. In line with its open support policy, TCL might share this document with consumers to facilitate self-repair, nevertheless TCL is not responsible for any damages or accidents which might occur during any repair operation or intervention on this device, caused by any misunderstanding or wrong manipulation or utilization of any tools or installations not supplied by or setup by TCL.
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Content
1 Precautions..............................................................................................................................................3 2 General Product Information .................................................................................................................4 3 Maintenance preparation .......................................................................................................................5
3.1 Handset with at least 50% battery charges ................................................................................... 5 3.2 Supported Micro SD card and SIM card, 33W Charger, Type C 2.0 cable (C-to C cable). .......... 5 3.3 PC with below configurations to do software update by using PC tool. ........................................ 5 3.4 Backup the user data before repairing. Below way is for your reference...................................... 5 4 Factory Reset ..........................................................................................................................................5 4.1 Remove Google account before doing factory reset ..................................................................... 5 4.2 Factory Reset ................................................................................................................................. 5 4.3 Recovery mode .............................................................................................................................. 6 5 Software Update ......................................................................................................................................7 5.1 Software update by FOTA.............................................................................................................. 7 5.2 Software update by using Mobile Upgrade tool............................................................................. 7 6 Function Test with Support Centre .....................................................................................................10 7 Troubleshooting ....................................................................................................................................12 7.1 What should I do if my device reboots by itself? ......................................................................... 12 7.2 What should I do if my device system lags or freezes? .............................................................. 12 7.3 What should I do if my device cannot charge or charges slowly?............................................... 12 7.4 What should I do if my device's battery drains under normal use?............................................. 13 7.5 What should I do if my device auto powers off? .......................................................................... 13 7.6 What can I do if my device heats up?.......................................................................................... 13 7.7 What should I do if my device cannot power on? ........................................................................ 14 8 Contact of TCL hotline and service centers ......................................................................................14 9 Disassembly and reassembly..............................................................................................................15 9.1 Disassembly tools ........................................................................................................................ 15 9.2 Disassembly Process................................................................................................................... 15 9.3 Reassembly process and tools .................................................................................................... 22 10 Explode View .........................................................................................................................................24 11 Split View ...............................................................................................................................................25
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1 Precautions
1) Use only demagnetized tools specifically designed for small electronic repairs, most electronic parts are sensitive to electromagnetic forces.
2) Use only high quality screwdrivers when repairing products. Poor quality screwdrivers can easily damage the heads of the screws.
3) Always use genuine spare parts. Parts from third party may not function properly or even cause damage.
4) The parts below require calibration to ensure proper function after repair, please contact TCL authorized Repair Center. Sensors (proximity, fingerprint), dual camera, touch screen panel, speaker, motherboard and more.
5) The IPXX degree of protection cannot be guaranteed in the event of repair by the user or by an unqualified person.
6) If the device suffered from water/liquid damage, you will have the option to have a repair, but this may exceed the value of the device, depending on level of damage.
7) Do not remove, damage, heat, short circuit, or disassemble the battery. If you need replace the battery, camera, screen or motherboard, we recommend contacting TCL authorized RC to get In warranty repair or out of warranty service offer.
8) Before any repair, backup personal information and important data, and then proceed with the repair.
9) Many semiconductors parts inside the device are sensitive to electrostatic discharges that can cause unrecoverable damages on the parts. Setup and stay in an Electrostatic Protected Area (EPA) to avoid electrostatic discharge before opening the device for repair.
10) Before repairing the device, you must be absolutely certain that the device is turned off. 11) Repair the device in a safe/explosion-proof environment. If the device is damaged, emits smoke or
if you smell a burning odor, stop repairing/using the device immediately, use a fire extinguisher or fire-proof box, and contact TCL. 12) When removing the back cover, be careful not to damage the product, especially the battery. Recommended safety equipment: Glasses/Gloves/Mask, etc. 13) Before assembly, make sure that there are no screws or foreign objects around the battery. 14) Before assembly, make sure that there are no abnormalities before reattaching the back cover.
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2 General Product Information
Features/Hardware Design System Processor Memory & Storage Display Rear Camera Front Camera Battery
Connectivity
Sensors Accessories
Description Dimensions: 168.16*75.53*8.09mm; Weight: 195g Android 14(OS upgrade to Android 15) Chipset: Mediatek Helio G88(MT6769); CPU: 2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55; GPU: Mali-G52 MC2 T611B: 4GB RAM+128GB ROM, T611B1: 6GB RAM+256GB ROM; Support micro SD cards up to 2TB 6.78(Hole) , FHD+ (1080*2460) 50 MP rear camera: PDAF, 1/2.76, 0.64um, F1.8, field of view 74.2°, 5P lens. 2 MP macro camera: FF, 1/5 '', 1.75m, F2.4, field of view 88.8°, 3P lens 8MP front camera: FF, 1/4'', 1.12m, F2.0, field of view 77.7°, 4P lens 5010mAh (standard) Li-ion 2G bands: GSM 850/900/1800/1900 3G bands: B1/2/4/5/8 4G bands: B1/2/3/4/5/7/8/12/13/17/20/26/28/38/40/41/66 Wi-Fi Direct Bluetooth 5.1, Type-C Cable 2Sim+1TF card GPS: support BDS/GPS/ Glonass/ Galileo, with A-GPS Accelerometer (G sensor), Proximity Sensor, Light Sensor, E-Compass 33W Charger, Type C 2.0 cable (C-to C cable), LCD sticker, Quick guide, SIM card pin
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3 Maintenance preparation
3.1 Handset with at least 50% battery charges 3.2 Supported Micro SD card and SIM card, 5V 2A and 33W Chargers, Type C
2.0 cable. 3.3 PC with below configurations to do software update by using PC tool.
CPU: Equal to Pentium 1.6 GHZ or above RAM: 4GB or above Hard Disk: 10GB or above Operation System: Win7/Win8/Win10 USB port Internet connection with minimum internet speed of 8Mb/s
3.4 Backup the user data before repairing. Below way is for your reference.
You need to add your Google account details first. Go to "Settings"-> "System"-> "Backup" ->"Turn on" >Touch "Back up now. * App data, SMS text messages, Device settings, Call history, and Contacts will be backed up.
4 Factory Reset
Factory reset will reset your phone to restore it to its factory settings. This will delete all data including files and downloaded apps. Please backup the user data before doing factory reset.
4.1 Remove Google account before doing factory reset
If Google account is not removed before doing the factory reset, it is not possible to setup the device with another Google account at initial setup after the factory reset and it will require you to login your previous signed-in Google account. It is recommended that you log out of the Google account. Follow the below steps to remove your Google account from the device. You can go to "Settings"-> "Accounts"->touch your google account-> "Remove account"->touch "REMOVE ACCOUNT".
4.2 Factory Reset
You can follow the below steps to perform factory reset when the phone is powered on. Go to main menu -> "Settings"-> "System"-> "Reset options"->"Erase all data (factory reset)"->Touch
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"Erase all data" in the open window ->"Erase all data".
4.3 Recovery mode
How to use: Long press "Power" Key + "Volume up" key in power off mode until TCL logo appear, to enter recovery mode.
When to use: When you cannot start your handset or when there is something wrong during switch on or when cannot charge.
Consumer personal data format: It will format consumer data, and the memory and settings of your product will return as released from factory.
Click-through steps
1) Power off the device, long press "Power" Key + "Volume up" key until the LCD lights on;
2) Press "Volume" key to select "Wipe data/factory reset" and press "Power" key to confirm;
3) Select "Factory data reset" and press "Power" key to confirm;
4) Select "Reboot system now" and press "Power" key to confirm.
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5 Software Update
It is suggested to upgrade the handset software to latest version for better performance. Before upgrade, please remember to backup your data and keep your phone fully charged.
5.1 Software update by FOTA
Firmware-Over-The-Air ("FOTA") is a way in which the firmware of a mobile device is updated wirelessly by the device's manufacturer. Firmware runs in the background without any input from the user, to make sure that the device's hardware runs properly. Head to your device's "Settings"-> "System"-> "System Update"->"CHECK FOR UPDATES.
5.2 Software update by using Mobile Upgrade tool
1) Download the corresponding SW upgrade tool Mobile_Upgrade_S_Gotu2_v1.4.6 from website:
https://www.tcl.com/global/en/support-mobile/model/tcl-50-se->Software ->
2) Open the download Mobile_Upgrade_S_Gotu2_v1.4.6 Setup.exe file and choose the language, install the tool according to the prompt.
3) After finish install the tool, click "Finish" and restart your computer. 4) Open the tool, choose the language, select the model "T611", click "Start"-> "Next" ->click "Yes"-
>Power off your phone and connect it to computer via USB cable and waiting for loading software package.
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5) Click "OK" and disconnect your phone from USB cable when the tool pops up the prompt "Please disconnect your device from the USB cable to proceed".
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6) Click "Upgrade device" and connect your powered off phone to computer, waiting for upgrade.
7) Upgrade successfully.
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6 Function Test with Support Centre
1) Check that the Nano SD card are inserted correctly. 2) Power on the product to launch the auto test. 3) If the product displays "input NCK code", this means the software is Network locked or SIM locked,
and can only be used with dedicated SIM card hence use the relevant SIM card or enter the phone NCK code if available. 4) Open the "Support Centre" app->Click "AGREE" -> "Hardware diagnosis"->"START TESTING" >Authorize the permissions required for diagnostics->Follow the instructions to test
.
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7 Troubleshooting
7.1 What should I do if my device reboots by itself?
a) If the issue appears occasionally, it may be caused by anomalies in a file. It is recommended that you continue to use the device normally. b) Check if the issue occurs during charging. If yes, we recommend trying the official charger and data cable. c) If the issue occurs while using a third-party app, make sure the app is compatible with your device and Android version. Try uninstalling the third-party app. d) If the issue occurs while using the built-in app, try to reset or update your device.
7.2 What should I do if my device system lags or freezes?
a) Try to restart your device. b) Charge your device until the battery level is at least 30%. c) Too many apps running in the background or the system cache not being cleared may cause a system lag. Touch the Menu key at the bottom corner of screen to view recently used applications. Touch "Clear all" to close the tasks. d) Uninstall unused apps from time to time to ensure that your device has sufficient storage space. e) If the issue occurs in third-party apps, please uninstall the third party apps responsible. f) If you are playing a game, watching online video or listening to online music, your device may lag or freeze because of a poor network connection. Enable Airplane mode for a few minutes, then disable it and check your network connection again. Alternatively, move to a location with a better network connection g) Try to reset or update your device.
7.3 What should I do if my device cannot charge or charges slowly?
a) Check if there is any visible damage to the charger USB, the charger itself or the charging port of your device. If yes, back up your data and take your device and proof of purchase to our repair center to get more professional technical assistance. b) Charge the device with a TCL official charger for at least 30 minutes, and then try again.
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c) Verify whether there are any third-party power management software apps downloaded. If so, please uninstall these. d) Please don't use the device for a long time while it is charging. e) Try to reset or update your device.
7.4 What should I do if my device's battery drains under normal use?
a) Check if the device is in a high or low temperature environment. If yes, we advise you to use it only under normal operating conditions. b) Deactivate Bluetooth, Wi-Fi, or GPS when not in use. c) The battery drains quickly when playing games and watching videos. This is normal when running large games for a long time or watching videos. d) Too many apps running in the background or the system cache not being cleared may cause battery draining. Touch the Menu key in the bottom corner of the screen to view recently used applications. Touch "Clear all" to close the apps. e) Try to reset or update your device.
7.5 What should I do if my device auto powers off?
a) Power off your device and charge the device with a TCL official charger for at least 30 minutes, then try to power on again. b) If the issue occurs while using a third-party app, make sure the app is compatible with your device and Android version. Try uninstalling the third-party app. c) Try to reset or update your device.
7.6 What can I do if my device heats up?
A warning or sensation of heat in the device is the normal consequence of the CPU handling excessive data, which makes the battery warm. It is not harmful to the battery or device even if the device feels hot. Use the following actions to make your device return to its normal temperature: a) It is suggested not to expose your phone in sunshine for a long period of time;
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b) Close large power consumption applications, such as music, chatting applications, GPS application, 3D gaming, video streaming etc. c) Reduce the brightness of the screen to lower the temperature. d) Avoid using your device while charging. e) Avoid using a protective case that does not dissipate heat. Remove your protective case if your device heats up.
7.7 What should I do if my device cannot power on?
a) Charge the device with a TCL official charger for at least 30 minutes, and then try to power on again. b) Press and hold the power key for 10 to 15 seconds until the device vibrates, to perform a forced re-boot. c) Try to reset or update your device. If the previously described options do not help, you can contact our hotline or repair center to get more professional technical assistance. Find the hotline or repair center information from the TCL website or APP "Support center".
8 Contact of TCL hotline and service centers
If you are looking for official professional repair, please visit HOTLINE & SERVICE CENTERS (tcl.com) and search for the contact in your country/region.
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9 Disassembly and reassembly
9.1 Disassembly tools
You may use the following tools during the disassembly and reassembly procedure:
Plastic Plectrum
Anti ESD Tweezers
Plastic Spudger
Screws driver
Electric screws driver
SIM card pin
9.2 Disassembly Process
NoteThe complete disassembly guide is described as below for your reference, you can selectively (except disassembly and assembly method which needs to be followed carefully) do some of those steps according to the spare part which you need to replace.
Follow is the complete disassembly process of TCL 50 SE.
Step 1. Power off the device, remove SIM tray and Battery cover.
Step 1.1 Power off the device ,remove the SIM tray ,cover electrostatic protective film on the screen.
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Step 2. Remove Battery Cover Sale Assembly and Fingerprint Module. Step 2.1 Separate the Battery Cover Sale Assembly as shown, open the it from right side carefully, in case damaging the Fingerprint Module FPC on left side.
Step 2.2: Separate the Fingerprint Module by using the tweezer as shown..
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Step 3. Remove Upper/Bottom Furnished Frame.
Step 3.1 Remove the P-sensor PET as shown.
Step 3.2: remove the screws.
Screw 1: mm
PB 1.6.0×0.50×L3.0
6pcs
Touque value: 0.9±0.1kgf.cm
Screw 2: PM1.4×0.3P×L3.0mm Touque value: 0.9±0.1kgf.cm
Step 3.3: remove the camera rubber
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Step 3.4: Separate the Upper Furnished Frame by using Plastic Plectrum. Remove it carefully in case damage the Fingerprint Module PFC.
Step 3.5: Separate the Bottom Furnished Frame.
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Step 4: Remove the main PCBA and sub PCBA.
Step 4.1: Disconnect all the FPC connectors, and RF cable connectors.
A. Battery connector B. LCD connector C. Fingerprint Module FPC connector D. Side key FPC connector E. FPC connector F. RF cable connectors G. Main camera connector
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Step 4.2: Remove the main PCBA and sub PCBA screws.
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Screw3: PM1.4X0.3PXL2.1 Touque value: 0.7±0.1kgf.cm
Step 4.3: Separate main PBCA by using tweezers as shown.
Step 4.4: Remove the Psensor rubber.
Step 4.5: Separate the sub PCBA, and then remove the audio jack and USB connector rubber.
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Step 5: remove the rest of the components. Step5.1: remove the main camera
Step5.3: remove the RF cable.
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Step5.4: remove the side key FPC.
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Step 6: Remove the battery.
Warning: Improper operation on battery will cause high risk for fire or burning. Thus please follow up the battery disassembly guidance strictly. Strictly avoid using sharp tool to pry up battery. Fire extinguisher is needed for emergency. Step 6.1: Peel off the Battery Protect Film as shown, disassemble the battery.
Step 6.2: Remove the Battery Protect Film.
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9.3 Reassembly process and tools
Reassembly process is reverse order of the disassembly process. But there are some precaution as follow:
1) Double-side sponge tape, battery packing pet, all types of adhesive on battery cover must be replaced with new ones once it is disassembled.
Conductive cloth, high temperature adhesive, double-side adhesive tape, or other adhesive are selectively replaced, depend on breakage, stickiness conditions. 2) There is "Thermal Gel" between main PCBA and TP-frame-pre-asm. If a new main PCBA or TPframe-pre-asm or both of them were repalced, new thermal gel should be filled.
Note: a) New thermal gel must be added if both main PCBA and TP-frame-pre-asm were replaced
b) New thermal gel is selective to add if only PCBA or TP-frame-pre-asm was replaced No need to clean the the original thermal gel. Prepare the "Thermal Gel" locally because of shipment restricted.
Item
Spe.
Picture
Thermal Gel (Prepare localy)
Thermal conductivity higher than 3.0WmK
it is suggested to add the new thermal gel on shielding case of main PCBAaround 200±20mg
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3) Before assembling the PCBA and sub PCBA, make sure the P-sensor rubber, audio-jack-rubber and USB-rubber were assmebled.
4) Before assembling the Upper Furnished Frame and Bottom Furnished Frame, make sure the main PCBA and sub PCBA were screwing.
5) Pay attention that there are three types of screws:
6) When assemble the Battery Cover, pay attention to the fingerprint Module assembly and the FPC, do not excessive torsion of PFC.
7) In order to check if the back cover is well assembled, mainly in the highlighted areas in red. Please apply a visual check and if necessary a light pressure to ensure back cover is well stuck.
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Service Manual
10 Explode View
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Service Manual
11 Split View
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1 Macro Camera
33 Upper Furnished Frame
45 Side Key Furnished FPC
57 Antenna Spring,1 PINs
2 Front Camera
34 Coin Vibrator
46 RF Cable
58 Antenna Spring,1 PINs
3 Main Camera
35 Main Camera 50M Conduct Foam 47 Ambient Light+Proximity Sensor 59 Antenna Spring,1 PINs
4 Wide-angle Camera
36 Screw,PM1.4X0.3PXL2.1
48 BTB Connector(Socket),10 PINs 60 Antenna Spring,1 PINs
5 Speaker
37 Screw,PM1.4×0.3P×L3.0mm
49 BTB Connector(Socket),30 PINs 61 Flash PCBA
6 Fingerprint Module
38 Screw,PB 1.6.0×0.50×L3.0 mm 50 BTB Connector(Socket),60 PINs 62 Light-Emitting Diode,Flash LED
7 Pro Furnished Underfilling 39 5M Camera Rubber
51 Nano SIM Card Block
63 MIC
9 Battery Cover Sale Assembly 40 2M Macro camera Rubber
52 Battery Connector
64 GND PCBA
20 Speaker Front Foam
41 Audio Jack Rubber Cover
53 RF Connector
65 SUB PCBA
30 Upper SPK FPC
42 Tyoe-c Rubber Cover
54 Memory Card Block
66 Audio Jack,5 PINs
31 Below SPK FPC
43 P-sensor Rubber Cover
55 SIM card connector Holder
67 Type C Connector,16 PINs
32 Bottom Furnished Frame
44 P-sensor PET
56 Antenna Spring,0 PINs
68 BTB Connector(Socket),30 PINs
69 Antenna Spring,1 PINs
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