Samsung SM-F741B - Repair Manual

Usage Notices 7 Instructional Icons Warning : situations that could cause injury to yourself or others Caution : situations that could cause damage to your device or other equipment Notice : notes, usage tips, or additional information

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...

Software Update 11 3 Tap Reset → Delete all . All data will be deleted when rebooting. During a factory data reset, the device may repeat rebooting and the logo may be displayed for a long time.

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...

Quality Test 18 Camera • Function: Check whether the rear and front cameras are working normally. • How to check:Tap the camera button to test the rear and front cameras.The picture that was taken will be displayed to check the quality of the pictures. • Provided information ‒ Status: View the statu...

Quality Test 23 S Pen • Purpose: Check whether the S Pen is recognized in all areas of the touchscreen. • How to check: 1) Tap all the rectangles on the screen with the S Pen. The tapped or dragged rectangles will turn blue. 2) Hover the S Pen over the screen and move from A to B. The blue circle wi...

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 28 3 Read Privacy Notice and tap Continue . • If you are not signed in to your Samsung account, a button will appear to sign in. • If you select the link to read the full Privacy Notice, you will be directed to our site.

Calibrations 30 6 Read the on-screen instructions and tap Start . Refer to Optical Fingerprint Sensor Calibration , Resetting the Battery Cycle Count , Range Sensor Calibration , Touch Screen Panel Calibration , Speaker Calibration , Under-display Camera Calibration (Fold Models Only) , and Digital ...

Calibrations 31 7 Check the results of each calibration item. • Completed : Calibration was done normally. • Failed : Calibration failed. • Skipped : Calibration was skipped. 8 On the calibration results page, tap Close to close the app.Restart your device to finish calibrating.

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 QCA01 Rear Camera(Wide) QCA02 Rear Camera(Ultra Wide) QCR258 Screw 3442 QCR257 Screw 3489 QCR241 Screw 3507 QBR08 Bottom Metal Plate QCA11 Front Camera QIF01 Charging Port QAN11 5G mmWave Antenna QME03 5G mmWa...

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 Cover Adhesive Tape GH81-26116A 1 Double sided adhesive tape for attaching the back cover t...

Disassembly and Assembly 57 Disassembly and Reassembly for replacement The product’s composition may vary depending on the country, region, or carrier. Before disassembling: • Unplug and turn off device before disassembling. • Wear an anti-static wrist strap and connect it to the grounded ESD safe m...

Disassembly and Assembly 59 SIM Card Tray Disassembly Prepare the device to repair by yourself. 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.

Disassembly and Assembly 60 Reassembly 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. Insert the SIM card tray back into the slot. Ensure that there are no abnormalities.

Disassembly and Assembly 61 Back Cover Disassembly 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 back cover for 3 minutes to soften the adhesive. • It is possible for the device or battery to be damaged by he...

Disassembly and Assembly 69 Cover Screen Disassembly 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 cover screen for 3 minutes to soften the adhesive. • It is possible for the device or battery to be damaged...

Disassembly and Assembly 80 Charging Port and Microphone The microphone is built into the charging port module. Disassembly Remove the Back Cover first before you begin. 1 Check the 2 screws (Black 2 ea) on the bottom metal plate and the 4 screws (Silver 2 ea, Black 2 ea) on the bottom speaker and r...

Disassembly and Assembly 91 Main Board The PBA can only be replaced at an authorized repair shop. If the PBA is faulty, contact Samsung for further instruction. Disassembly Remove the SIM Card Tray and Cover Screen first before you begin. 1 Check the total of 8 screws, including the 6 screws on the ...

Disassembly and Assembly 102 Front Camera Disassembly Remove the SIM Card Tray , Cover Screen , and Main Board first before you begin. 1 Heat the microwaveable heating bag and apply it to both the front and back sides of the front camera module for 3 minutes. • It is possible for the device or batte...

Disassembly and Assembly 108 Rear Camera Disassembly Remove the SIM Card Tray , Cover Screen , and Main Board first before you begin. Disconnect the rear camera connector from the main board using the tweezers, and remove the rear camera carefully from the main board. Leave the camera lens facing up...

Disassembly and Assembly 110 Top Speaker Disassembly • Remove the SIM Card Tray , Cover Screen , and Main Board first before you begin. • The top speaker is already built into the screen module. Disassemble the speaker only if the speaker itself requires repairs. Lift up on the separator groove of t...

Disassembly and Assembly 115 Bottom Speaker Disassembly Remove the Back Cover first before you begin. 1 Check for the disassembly steps of the Charging Port and Microphone and separate the wireless charging module and speaker module simultaneously from the device. 2 Using the tweezers, separate the ...

Disassembly and Assembly 119 Volume Button The buttons are already built into the screen module. Disassemble the buttons only if the buttons themselves require repairs. Disassembly To remove the Volume button, lightly press one end of the button with your fingers so that the other end protrudes. Pus...

Disassembly and Assembly 121 Side Button (Fingerprint Recognition Sensor) • The buttons are already built into the screen module. Disassemble the buttons only if the buttons themselves require repairs. • The Side button has a built-in fingerprint recognition sensor. Thus, it cannot be removed direct...

Disassembly and Assembly 133 Screen Module Disassembly 1 Remove the SIM Card Tray , Back Cover , Cover Screen , Charging Port and Microphone , Main Board , and Front Camera one by one. For the United States 5G devices, follow the next steps to remove the 5G mmWave antenna additionally. The 5G mmWave...

Disassembly and Assembly 137 Battery • The 2 batteries should always be replaced at the same time. • The battery can only be replaced at an authorized repair shop. If the battery is faulty, contact Samsung for further action. Disassembly Remove the SIM Card Tray , Back Cover , Cover Screen , and Mai...

Disassembly and Assembly 149 14 Check carefully with your fingers to see if there are any screws or other foreign substances inside the device (battery, PBA, cable, etc.). Shake the device lightly with the back of the device facing down to remove any remaining screws. Reassemble the Main Board , Cov...

AP CAMERA CONNECTIVITY mmW ANT Module SUB6/LTE mmW ET Modulator RF POWER CAM PMIC REAR WIDE CAM FRONT CAM CAM MCU REAR UW CAM SENSOR 6 axis #1 BTP FOLD_DET HALL_IC Proxi/Light #1 Barometer Proxi/Light #2 CAM MCU A-Hall Sensor 6 axis #2 Magnetic Limiter MAIN PMIC Direct Charger MAIN PMIC MAIN PMICx4 ...