Samsung SM-F731B - Repair Manual

Usage Notices 6 • Make sure to wear the appropriate safety equipment before carrying out repairs. Samsung is not responsible for injuries that may occur because of not wearing the proper safety equipment. Refer to Tools for Disassembly and Assembly for a list of tools that you will need for assembli...

Software Update 8 Software Update Updating Software through FOTA Update your device’s software through the firmware over-the-air (FOTA) service. You can also schedule software updates.Launch the Settings app and tap Software update → Download and install . • Install now : Install updates. • Schedule...

Software Update 10 3 On the devices list, click the device that failed to update the software and check the recovery code. 4 On another computer, launch Smart Switch . 5 Click → Emergency Software Recovery and Reset → Emergency code recovery . 6 Enter the recovery code and click OK . 7 Follow the on...

Quality Test 12 Quality Test Quality Test Using the Samsung Members App It is recommended to evaluate your device through the Samsung Members app after it has been repaired to guarantee its performance. If the test results show any abnormalities or that another malfunction has occurred because of th...

Quality Test 13 3 Tap Test all . The device performs a test on all items.When the test is finished, you can check the test results. • Tick mark: Working normally • Exclamation mark: Needs further inspection • The test proceeds automatically, but you may need to follow the on-screen instructions depe...

Calibrations 26 Calibrations Calibrations In order to guarantee the stable and correct performance of components or sensors, it is required to conduct calibrations through the Self Repair Assistant app after repair. If the calibration results show any malfunctions, visit a Samsung Service Center for...

Calibrations 27 • Depending on the model, the screen module may include batteries. So when the screen module is replaced, the battery also has to be selected and a battery cycle reset must be performed. • In the Fold models, touch screen panel calibration is performed for both the main and cover scr...

Calibrations 32 Optical Fingerprint Sensor Calibration Whenever the screen is replaced, the optical fingerprint sensor must be calibrated to guarantee optimized fingerprint sensor performance for devices that have it.Optical fingerprint sensor calibration is available through the Self Repair Assista...

Calibrations 35 8 Check the result of the calibration. Completed appears only when the calibration is successfully completed. If Completed does not appear, try calibrating again. Resetting the Battery Cycle Count The battery cycle count should be reset whenever your device’s battery is replaced. 1 L...

Calibrations 38 Range Sensor Calibration When replacing screens, batteries, back glasses, or charging ports, range sensor calibration is required to ensure the range sensors of devices equipped with them are optimized.Range sensor calibration is available through the Self Repair Assistant app. Some ...

Calibrations 40 Touch Screen Panel Calibration When replacing screens, touch screen panel calibration is required to ensure accurate touch input.Touch screen panel calibration is available through the Self Repair Assistant app. In the Fold models, touch screen panel calibration is performed for both...

Calibrations 42 Speaker Calibration When replacing speakers, the speaker must be calibrated to guarantee optimized speaker performance for devices that have it.Speaker calibration is available through the Self Repair Assistant app. 1 Launch the Self Repair Assistant app. 2 Select the part that you h...

Calibrations 46 Digital Hall Sensor Calibration (Fold and Flip Models Only) Whenever the screen is replaced, the digital hall sensor must be calibrated to guarantee optimized digital hall sensor performance for devices that have it.Digital hall sensor calibration is available through the Self Repair...

Exploded View and Parts List 49 Exploded View and Parts List • The 5G mmWave antenna modules are only supplied with United States devices. • The product’s composition may vary depending on the country, region, or carrier. Exploded View

Exploded View and Parts List 50 Parts List Number Name QCR255 Screw 3487 QCR251 Screw 3506 QCA02 Rear Camera(Ultra Wide) QCA01 Rear Camera(Wide) QRE11 Upper Rear Cover QFR02 Cover Screen QSM01 SIM Card Tray QBR04 Cover Screen Cable Connector Cover QBR02 Upper Metal Plate QCR258 Screw 3442 QCR257 Scr...

Disassembly and Assembly 52 Disassembly and Assembly Tools for Disassembly and Assembly When repairing devices, you absolutely must wear protective equipment for your safety. Tool & Part Code Image Description Safety Goggles Prevents accidents during repair (protective equipment) Safety Gloves (...

Disassembly and Assembly 55 Fasteners (Adhesives and Materials) for Assembly The fasteners composition may vary depending on the repair parts, country, region, or carrier. Item Quantity Image Description Back CoverAdhesive Tape GH02-24952A 1 Double sided adhesive tape for attaching the back cover to...

Disassembly and Assembly 57 Disassembly for Replacement Before disassembling: • Unplug and turn off device before disassembling. • Remove the SIM card tray from the device. • Wear an anti-static wrist strap and connect it to the grounded ESD safe mat. • The product’s composition may vary depending o...

Disassembly and Assembly 58 SIM Card Tray Remove 1 Prepare the device to repair by yourself. 2 Insert the ejection pin into the hole of the SIM card tray to loosen the tray and pull out the tray gently from the tray slot. After you finish disassembling, refer to SIM Card Tray Assembly for how to rea...

Disassembly and Assembly 59 Volume Button Remove • The buttons are already included in the screen module. Replace them only if they need to be repaired. • The Side button has a built-in fingerprint recognition sensor. Thus, it cannot be removed directly from outside. 1 Press one end of the Volume bu...

Disassembly and Assembly 61 Back Cover Remove When removing the back cover, ensure that the device is fixed on a flat surface. 1 Heat the microwaveable heating bag and apply it on the left edge of the back cover for 3 minutes. • It is possible for the device or battery to be damaged by heat. • Do no...

Disassembly and Assembly 71 Cover Screen Remove When removing the cover screen, ensure that the device is fixed on a flat surface. 1 Heat the microwaveable heating bag and apply it on the left edge of the cover screen for 3 minutes. • It is possible for the device or battery to be damaged by heat. •...

Disassembly and Assembly 81 Wireless Charging Module and Bottom Speaker Remove 1 Check and remove the screws at the 2 different points on the bottom metal plate using a cross-head screwdriver. Check the number of screws that have been removed, and store them carefully to make sure that no unassemble...

Disassembly and Assembly 86 Charging Port Remove 1 Check the screws at the 2 different points on the charging port and remove them using a cross-head screwdriver. Be careful not to damage the near components.Check the number of screws that have been removed, and store them carefully to make sure tha...

Disassembly and Assembly 88 Main Board Remove The PBA can only be replaced at an authorized repair shop. If the PBA is faulty, contact Samsung for further instruction. 1 Check the screws at the 5 different points on the upper metal plate and remove them using a cross-head screwdriver. When removing ...

Disassembly and Assembly 94 Front Camera Remove 1 Heat the microwaveable heating bag and apply it to both the front and back side of the front camera module for 3 minutes. • It is possible for the device or battery to be damaged by heat. • Do not heat the device in a microwave. Doing so could cause ...

Disassembly and Assembly 97 5G mmWave Antenna Remove The 5G mmWave antenna is only supplied with United States devices. 1 Insert the pointed end of your tweezers in the gap between the edge of the right 5G mmWave antenna and the frame.Pull the 5G mmWave antenna out of its recess until you can grab i...

Disassembly and Assembly 99 Side Button (Fingerprint Recognition Sensor) Remove • The buttons are already included in the screen module. Replace them only if they need to be repaired. • The Side button has a built-in fingerprint recognition sensor. Thus, it cannot be removed directly from outside. 1...

Disassembly and Assembly 101 Screen Module The screen module consists of the screen, metal bracket, and battery. As they are bonded to each other, they cannot be separated.

Disassembly and Assembly 102 Reassembly for Replacement Before reassembling: • Remove the adhesive tape residues perfectly. • Prepare all existing screws of this device and adhesive tapes for the back cover and front camera. • Wear an anti-static wrist strap and connect it to the grounded ESD safe m...

Disassembly and Assembly 103 Preparing a New Screen Module 1 Using your fingers, hold the handle of the upper rear protection film attached to the new screen module and remove it. Be careful not to damage the near components. 2 Using the tweezers, remove the camera protection film attached to the ne...

Disassembly and Assembly 107 Side Button (Fingerprint Recognition Sensor) Assembly Leaving screws inside the device may damage internal components, such as the battery. During assembly, be extra careful not to leave any unassembled screws inside the device.The buttons are already included in the scr...

Disassembly and Assembly 111 5G mmWave Antenna Assembly Leaving screws inside the device may damage internal components, such as the battery. During assembly, be extra careful not to leave any unassembled screws inside the device.The 5G mmWave antenna is only supplied with United States devices. 1 R...

Disassembly and Assembly 113 Front Camera Assembly Leaving screws inside the device may damage internal components, such as the battery. When assembling, be extra careful not to leave any unassembled screws inside the device. 1 Using the tweezers, remove the adhesive tape from the front camera hole ...

Disassembly and Assembly 115 Main Board Assembly Leaving screws inside the device may damage internal components, such as the battery. When assembling, be extra careful not to leave any unassembled screws inside the device. 1 Align the main board module onto the device frame. The FPCB cables have to...

Disassembly and Assembly 120 Charging Port Assembly Leaving screws inside the device may damage internal components, such as the battery. When assembling, be extra careful not to leave any unassembled screws inside the device. 1 Using the tweezers, insert the charging port module to the bottom metal...

Disassembly and Assembly 122 Wireless Charging Module and Bottom Speaker Assembly Leaving screws inside the device may damage internal components, such as the battery. When assembling, be extra careful not to leave any unassembled screws inside the device. 1 Using the tweezers, assemble the lower pa...

Disassembly and Assembly 131 Volume Button Assembly The buttons are already included in the screen module. Replace them only if they need to be repaired. 1 Remove the release film of new Volume button. 2 Using your fingers, grab the Volume button and insert it on the slot carefully. • Be careful not...

Disassembly and Assembly 133 SIM Card Tray Assembly 1 Insert the SIM card tray back into the slot and push it in its position. 2 Ensure that there are no abnormalities. • Check whether the parts or sensors in the device work properly with the Self Repair Assistant app after repairing and assembling ...