TCL Onetouch 4043 T313D1 Service Manual
This document provides detailed service and repair instructions for the TCL Onetouch 4043 T313D1.
Information
A. Please read the entire manual before commencing any repair. If you are unable to perform the repair according to this manual, do not attempt it yourself.
B. All functions, features, specifications, and other information regarding the product contained in this document, including prices, components, performance, availability, and product capacity, are subject to change without notice.
C. This service manual is provided solely for out-of-warranty repairs. If the product is under warranty, contact customer service before performing any self-repair or ordering replacement parts. Modification, personalization, or alteration of software or hardware by unauthorized individuals will void the warranty.
D. The information and instructions provided in this document are intended for individuals with knowledge and experience in repairing electrical devices. TCL is not responsible for any product damage, injury, or safety issues caused by attempts to repair contrary to instructions, or due to misunderstanding or improper use of devices or installations. TCL is not responsible for any product damage, injury, or safety issues caused by repair attempts using tools or installations not supplied or configured by TCL.
1. Safety Precautions
- Use only demagnetized tools designed for small repairs, as most electronic components are sensitive to electromagnetic interference.
- Use only high-quality screwdrivers for product repairs. Low-quality screwdrivers can easily damage screw heads.
- Use only genuine replacement parts. Third-party parts may not function correctly or could cause damage or accidents.
- Certain parts may require calibration after disassembly or repair for proper function. If repair requires professional assistance, contact an authorized TCL service center. Examples include: sensors (proximity, fingerprint), rear camera, display module, speaker, mainboard, and other components.
- The water and dust resistance of the device is not guaranteed after user repair or repair by an unqualified person.
- If the device has been damaged by contact with water/liquid, the repair cost may exceed the device's value, depending on the extent of the damage.
- Be careful not to damage the battery, for example, through overheating, puncturing, short-circuiting, or disassembly. If the battery is damaged or you need professional assistance, contact an authorized TCL service center (RC, Repair Center).
- Before starting repairs, create backups of personal and important data.
- It is recommended to prepare and stay within an Electrostatic Protected Area (EPA) to prevent electrostatic discharge, which can cause irreversible damage to the device and components during repair.
- Before repairing the device, ensure it is fully charged and powered off.
- Before repair, prepare and wear appropriate protective equipment. Ensure the work area is free of flammable materials, foreign objects, and sharp items. Equip the repair area with safety amenities such as a fire extinguisher and protective clothing.
- When removing the rear cover, be careful not to damage product parts or the battery.
- Before assembly, ensure no screws or other objects remain inside or around the battery.
- Before reassembling and reattaching the rear cover, check for any abnormalities.
- The product packaging includes the user manual, quick start guide, and other information. More product information is available on the website: www.tcl.com.
2. Icons and Notes in the Manual
Failure to adhere to the notes in this manual may result in fire, injury, data loss, or damage to the device, parts, or other property.
⚠️ Warning: Instructions that indicate a risk of safety hazards or injury. Ignoring warnings may lead to fire or other safety problems, and can even result in injury or death. Remember, safety is always more important than money. If unsure, contact TCL via their website https://www.tcl.com/mobile-support or seek professional service.
⚠️ Caution: Information that indicates a risk of data loss or damage to the device or other equipment.
? Information: Instructions, tips, and notes necessary for successful procedure completion.
3. Safety Related to Electrostatic Discharge (ESD)
What is ESD?
Electrostatic Discharge (ESD) is a rapid, spontaneous flow of current caused by a high electrostatic field. It can damage electrostatic-sensitive components. ESD can cause latent defects that may manifest later in the device's operational life, leading to premature failure.
How to Prevent Electrostatic Discharge?
All conductors in the environment, including people, must be continuously connected or electrically bonded to ground or a substitute ground. Using ESD-protective equipment (anti-static), such as anti-static wrist straps, anti-static gloves, anti-static tools, and an anti-static mat, can reduce the risk of ESD.
4. Precautions in Case of Glass Breakage
The device's display contains glass that may break in situations including:
- After dropping onto a hard surface.
- After being crushed, bent, or deformed.
- After impact with a hard object.
⚠️ Warning: Do not touch broken glass or sharp glass fragments without appropriate protective measures (e.g., anti-cut gloves and safety goggles) to avoid cuts from sharp edges.
5. Battery Safety
⚠️ Warning: The device contains a replaceable lithium-ion battery with hard cells. Battery safety is paramount during device repairs.
Improper handling of the battery can lead to overheating, swelling, gassing, or leakage of the battery, resulting in thermal events, fire, injury, death, data loss, or damage to the device, its parts, and nearby property.
5.1 Best Practices When Working with Batteries
⚠️ Warning: To prevent hazardous events when working with batteries, adhere to safety guidelines and prepare your workspace, prioritizing safety.
- Workplace Safety: Ensure the work area is free of flammable materials, foreign objects, and sharp items. Equip the repair area with safety amenities like a fire extinguisher and protective clothing.
- Avoiding Physical Damage: If using sharp tools near the battery, exercise caution. To prevent thermal events or the release of toxic fumes, do not drop, puncture, crush, or damage the cells.
- Preventing Short Circuits: Do not use conductive tools. During work, protect battery contacts from metal objects or conductive surfaces.
- Temperature Control: Ensure the ambient temperature in the workspace is suitable for battery operation. Provide adequate ventilation to prevent overheating.
- Assembly Precautions: Before reassembly, ensure the device is free of dust, unfastened screws, excess screws, or other unnecessary items.
- Proper Disposal: Dispose of or recycle batteries in accordance with local laws and environmental protection guidelines.
5.2 Procedure in Case of a Thermal Event
⚠️ Warning: A thermal event is a sudden chemical reaction within a lithium-ion battery that rapidly releases stored energy, potentially causing battery off-gassing and fire. Causes can include physical damage, improper operation or replacement, or exposure to temperatures outside the battery's operating range.
If you observe any signs of a battery thermal event, take immediate action to ensure the safety of people and the environment.
Signs of a Thermal Event:
- Smoke, sparks, or soot emission from the battery or device.
- The battery pouch rapidly swells or bulges.
- Hissing or popping sounds from the battery or device.
Immediate Actions to Take:
- Fire Neutralization: Quickly cover the battery or device with a large amount of clean, dry sand to contain the reaction.
- Contact Authorities: Call the local fire department and request further assistance.
- Evacuate and Ventilate: Leave the area for 30 minutes to allow smoke to dissipate and ensure environmental safety.
- Use Protective Gear: After 30 minutes, put on heat-resistant gloves and safety goggles with side shields, then carefully remove the device from the sand.
- Clean the Area: First, wipe the affected area with water, then apply an anti-static cleaner for safety.
- Proper Disposal: Dispose of the damaged battery or device and any resulting waste according to local laws and environmental protection guidelines.
6. Factory Reset
? Caution: Performing a factory reset will format the device to restore factory settings. User data, including downloaded files and applications, will be erased. Back up all data on the device before performing a factory reset. TCL is not responsible for data loss.
6.1 Factory Reset
If the phone can be powered on, follow these steps to perform a factory reset:
In the main menu, navigate to: Settings -> Phone settings -> Factory data reset -> Enter password "1234" -> OK -> OK.
7. Software Update
It is essential to update your headset's software to the latest version for optimal performance. Before updating, remember to back up your data and fully charge your phone.
7.1 Software Update via FOTA
Firmware-Over-The-Air (FOTA) is a method of wireless firmware updating for portable devices supported by the device manufacturer. The firmware operates in the background without user intervention, ensuring the device's hardware functions correctly.
In the "Settings" app, navigate to: Find updates -> OK.
8. Basic Troubleshooting
You can find solutions to frequently asked questions on the official TCL website.
- Visit the website: https://www.tcl.com/mobile-support
- Scroll down to the "Troubleshooting" section and click "View more".
- Select your product type and review the FAQs and step-by-step troubleshooting methods.
Information: If the described solutions do not help, contact the hotline or service center for professional technician support. Information for the hotline or service center can be found on the TCL website.
9. Contact TCL Hotline and Service Center
To find an official TCL professional service center, visit the INFOLINIA I CENTRA SERWISOWE website to search for contacts in your country/region.
10. Disassembly and Reassembly
10.1 Basic Tools
⚠️ Warning: For safe device repair, use appropriate personal protective equipment. Disassembly and reassembly steps may require additional tools. More details can be found in the descriptions of specific steps.
| Tool/Equipment | Description | Example Image Description |
|---|---|---|
| Safety Goggles with Side Shields | Personal protective equipment to prevent accidents during repairs. | Description: Protective eyewear to shield eyes from debris and potential hazards. |
| Anti-cut Gloves | Personal protective equipment to prevent accidents during repairs. | Description: Gloves designed to protect hands from cuts and abrasions. |
| Protective Mask | Personal protective equipment to prevent accidents during repairs. | Description: A mask, possibly N95 rated, to protect against dust and particles. |
| ESD Wrist Strap | Reduces the risk of electrostatic discharge (recommended item). | Description: A strap worn on the wrist, connected to ground, to dissipate static electricity. |
| ESD Mat | Reduces the risk of electrostatic discharge (recommended item). | Description: An anti-static mat used as a grounding surface for components and tools. |
| Plastic Prying Tool | Used to disassemble the rear cover and other parts. | Description: A plastic tool, often shaped like a guitar pick, used for prying open device casings without damage. |
| Anti-static Tweezers | Used for disconnecting connectors, cables, and other parts. Information: If parts can be easily damaged by sharp tools, use plastic or rubber-tipped tweezers. | Description: Tweezers designed to be non-conductive or anti-static, used for handling small components and connectors. |
| Phillips Screwdriver | Used for unscrewing Phillips head screws. Size: PH0. | Description: A screwdriver with a cross-shaped tip, specifically a PH0 size. |
10.2 Disassembly Before Replacement
Before Disassembly:
Always perform the following steps before starting a repair:
- Back up data on the device.
- Fully discharge the battery.
- Power off the device.
- Disconnect all cables.
- Remove all cases and similar protective coverings.
- Clean and tidy the workspace.
- Put on the ESD wrist strap and connect it to a properly grounded anti-static mat.
- Actual product configuration may vary by country, region, or operator.
In Case of Glass Breakage:
First, refer to section "4. Precautions in Case of Glass Breakage". To prevent broken glass from scattering outside the repair area, place an acrylic protective cover over the screen. The screen glass cannot be separated from the display module; if the glass breaks, the entire display module must be replaced. If you encounter difficulties with the repair, entrust the device repair to a professional or seek assistance from an authorized TCL service center.
Rear Cover Assembly:
Insert a fingertip into the recess in the rear cover and open the battery compartment.
Description of image: The rear cover is removed.
Battery:
Before proceeding, remove the following parts: Rear Cover Assembly.
⚠️ Warning: Before proceeding, read section 5 Battery Safety. If you have trouble with the repair, entrust the device repair to a professional or seek assistance from an authorized TCL service center.
Gently remove the battery using a fingertip, utilizing the battery removal slot indicated in the diagram.
Description of image: Two images showing how to carefully pry out the battery using a finger from the indicated slot. An arrow indicates the direction of removal. The battery is shown removed.
The battery has been successfully removed.
Battery Part Number: 601GH0100122
Display Assembly:
Before proceeding, remove the following parts: Rear Cover Assembly, Battery.
Description of image: Shows the device with the rear cover and battery removed. Then shows the device with the back component (Shell B) being separated from the front component (Shell A) using a plastic prying tool, following arrows.
Remove the two silicone pads from component Shell B.
Description of image: Close-up of the back of the phone showing two small silicone pads being removed.
Unscrew the two screws from component Shell B.
Description of image: Shows two screws being removed from the back of the phone. Text indicates "Quantity: 2", "Torque: 0.8±0.1 kgf".
Insert the tip of the prying tool between component Shell A and component Shell B.
Slide the prying tool along the right edge to begin prying open component Shell A in the direction of the arrow in the diagram. Continue the process to separate component Shell A.
Description of image: Shows a plastic prying tool being inserted into the seam of the phone and sliding along the edge to separate the back cover.
Remove the Mylar from the main LCD connector and the sub-LCD connector.
Description of image: Shows the main board with the LCD connected. Arrows point to the Mylar shielding being removed from two FPC connectors.
Disconnect all connectors of the SUB-PCBA.
- FPC connector connected to the PCBA and SUB-PCBA
- Main FPC LCD connector
- Sub FPC LCD connector
? Caution: To disconnect a ZIF connector, release the black latch by pressing it, then gently pull the connector.
Description of image: Shows the main board with numbered FPC connectors. A close-up highlights the ZIF connector and the latch mechanism.
Remove the SUB-PCBA.
Description of image: Shows the device with the main board exposed, then shows the sub-PCBA being lifted away from the main board.
Remove the LCD displays.
Description of image: Shows the device with the sub-PCBA removed, exposing the LCD. Then shows the LCD being carefully pried out. Another image shows the LCD module removed.
In locations — and — (as shown in the diagram), there are areas of the sub-LCD with adhesive. Gently guide the prying tool along the adhesive interface. Slowly slide the tool to fully detach the sub-LCD.
Description of image: Shows the LCD module with areas marked where adhesive is present. An arrow indicates the prying tool moving along the edge to detach the LCD.
10.3 Reassembly
To reassemble the device, follow the disassembly steps in reverse order. Below are important notes for certain steps:
- Double-sided foam tape and all types of adhesives on the battery or battery cover must be replaced after disassembly. Conductive and copper tapes are replaced selectively depending on damage and adhesion conditions.
- During FPC assembly, ensure the component is seated correctly. Proper mounting is indicated by the white positioning markers being covered after the clip is secured.
- Before reassembly, ensure the device is free of dust, unfastened screws, excess screws, and other unnecessary items.
