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Confidential and proprietary-the contents in this service guide subject to change without prior notice

Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorisation is strictly prohibited.

5. Disassembly and Assembly

5-2-4. Main Board Remove

The PBA can only be replaced at an authorised repair shop
If the PBA is faulty, contact Samsung for further action.

Step 1

Remove the indicated screw from the main board.
- Be careful not to damage the battery when removing the
screw.

Step 2

Disconnect the Front camera connector.

[Caution]

- Be careful not to damage the parts around the connector.

Warning

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Содержание SM-A127F

Страница 1: ...eatures specifications and other product information provided in this document including but not limited to benefits design pricing components performance availability and capabilities of the product are subject to change without notice Samsung reserves the right to alter this document or the product described herein at anytime without obligation to provide notification of such changes ...

Страница 2: ...illful person 6 If need to access failure data of your device or need to get more detailed diagnosis please visit Samsung Authorised repair centre 7 If you need to replace the battery and PBA go to a Samsung service centre and receive instructions 8 Before repairing save personal information and important DATA and repair it 9 Refer to Tools for repair for a list of tools that you will use for asse...

Страница 3: ...ve Devices Precaution Many semiconductors and ESDs in electronic devices are particularly sensitive to static discharge and can be easily damaged by it Properly shield the work environment from accidental electrostatic discharge before opening packages containing ESDs The potential for static electricity discharge may be increased in low humidity environments such as air conditioned rooms Increase...

Страница 4: ...ion Item Description OS Android R OS V11 0 Network 2G 3G 4G Battery 5 000 mAh Processor Samsung S5E3830XG0 2 0Ghz Quad 2 0Ghz Quad Connectivity GPS Glonass BT 5 0 full support USB 2 0 WiFi 11 b g n 2 4G NFC Camera Rear Wide 48MP A F F2 0 Ultra Wide 5MP F2 2 Bokeh 2MP F2 4 Macro 2MP F2 4 Front 8MP F2 2 Display 6 5 TFT 1600 x 720 HD RAM 3GB 4GB ROM 32GB 64GB 128GB Sensor Accelerometer Fingerprint Se...

Страница 5: ...s service guide subject to change without prior notice Distribution transmission or infringement of any content or data from this document without Samsung s written authorisation is strictly prohibited 3 Exploded View and Parts List 3 1 Exploded View ...

Страница 6: ...RA 8M FF 1 4 _A125F GH96 14023A QCA01 ASSY CAMERA WIDE 48M 1 2 SM M127F GH96 14179A QSP01 SPEAKER 3001 002856 QAR01 AUDIO RECEIVER 3009 001705 QCR251 SCREW TAPPING 6002 001657 QMO01 MOTOR DC SM_A013F GH31 00788A QCB01 COAXIAL CABLE A6060 117MM BLUE GH39 02043A QAN02 ANTENNA MAIN SM A125F GH42 06699A QIF01 ASSY SUB PBA SM A127F GH96 14636A QME02 UNIT SIDE KEY SM M515F GH59 15363A QBR01 ASSY BRACKET...

Страница 7: ...e is complete 8 Check additional updates Click the Download and install button to check additional updates 9 Check the latest software If it s not the latest software Step 6 You can run it again Software update Network Error Your phone was disconnected from the network before the download was complete The download will continue when your phone reconnects to a network 4 1 2 Updating software With S...

Страница 8: ... recovery continues to fail on the computer where the software update failed you can repair your device on another computer using the recovery code First you must locate and write down the recovery code The recovery code can only be found on the computer where the software update failed To locate the recovery code follow these steps 1 On the computer where the software update failed start Smart Sw...

Страница 9: ... data including files and downloaded apps To do Factory reset on your device follow next steps Step 1 Run Setting If you need software updates run the settings Step 2 General management Select General management Step 3 Reset Select Reset Step 4 Factory data reset Select Factory data reset Step 5 Check information Read and check the precautions when initialising the factory Step 6 Check accounts Ch...

Страница 10: ...Check the last guide Step 10 Run Delete all If you execute Delete all all data is deleted when rebooting During Factory data reset reboot can be repeated The logo may be displayed for a long time Please wait for setup wizard to run Check the battery level before Factory data reset If the battery level is low connect the charger There is a problem with system when power is turned off during factory...

Страница 11: ...sassembly and Assembly 5 1 Tools for repair When repairing devices you absolutely must wear protective equipment for your safety Tool Part Code Image Description Safety glasses Prevents accidents during repair protective equipment Safety Gloves Prevents accidents during repair protective equipment Safety Mask Prevents accidents during repair protective equipment SIM Tray Ejector Pin Pin for ejecti...

Страница 12: ...rohibited 5 Disassembly and Assembly Opening Pick Tool for disassembling the Back cover and other parts Opening Tool Tool for disassembling the Connector and other parts Suction Cup Tool for disassembling the Back cover Battery and other parts Tweezers Tool for handling connectors cables and other parts Because it is possible to damage parts or components when using sharp metallic tweezers use twe...

Страница 13: ...evice or battery to be damaged by heat Step 1 Remove the SIM tray Insert the Opening pick between the front and rear Push the hook from the left to the top and then to the right Caution Since an internal circuit malfunction could occur do not insert the Opening pick more than 4 mm Step 2 Disconnect the fingerprint sensor After removing the rear cover make sure the sponge is not damaged Step 3 Caut...

Страница 14: ...tribution transmission or infringement of any content or data from this document without Samsung s written authorisation is strictly prohibited 5 Disassembly and Assembly 5 2 2 Rear TOP BTM Rear Remove Step 1 Check the 13 points where the screws are located Remove all 13 screws with a cross head screwdriver ...

Страница 15: ...ansmission or infringement of any content or data from this document without Samsung s written authorisation is strictly prohibited 5 Disassembly and Assembly Step 3 Remove the Rear TOP Insert the tweezers in the groove to separate the Rear TOP Remove the BTM Rear Insert tweezers in the groove to separate the BTM Rear ...

Страница 16: ...Battery Connector Main FPCB Connector Remove Step 1 Disconnect the Battery connector from the PBA Warning Be sure to disconnect the Battery connector first for your safety Be careful to not damage the battery refer to Preparation Disconnect the main FPCB connector from the PBA Caution Be careful not to damage the parts around the connector Use tweezers to remove the Main board Coaxial cable Cautio...

Страница 17: ...tion is strictly prohibited 5 Disassembly and Assembly 5 2 4 Main Board Remove The PBA can only be replaced at an authorised repair shop If the PBA is faulty contact Samsung for further action Step 1 Remove the indicated screw from the main board Be careful not to damage the battery when removing the screw Step 2 Disconnect the Front camera connector Caution Be careful not to damage the parts arou...

Страница 18: ...hout Samsung s written authorisation is strictly prohibited 5 Disassembly and Assembly 5 2 5 Rear Camera Remove Step 1 Disassemble the Macro camera and 2 Bokeh camera connectors Caution Be careful not to damage the parts around the connector Turn the Main board module over Disassemble the Main camera and Wide camera connectors Caution Be careful not to damage the parts around the connector ...

Страница 19: ...e upward and to the left from the bottom to detach the Receiver from the terminal Caution Be careful not to damage the receiver Step 1 Insert the tweezers into the groove on the left side of the vibrator Lift it to remove it Caution Be careful not to damage the vibrator Be careful not to damage the battery with the tweezers Step 1 Disconnect the LED connector on the right Caution Be careful not to...

Страница 20: ...ument without Samsung s written authorisation is strictly prohibited 5 Disassembly and Assembly 5 2 9 Speaker Remove 5 2 10 Battery Remove If the battery needs to be changed visit a Samsung service centre and receive further action Step 1 Insert tweezers into the groove on the left side of the speaker Then lift the speaker to remove it Caution Be careful not to damage the speaker ...

Страница 21: ...ssembly Step 1 Remove the double sided tape from the speaker Mount it on the Indicator guide Caution Be sure to not assemble the speaker onto the Indicator guide when assembling it Step 1 After first attaching the bottom of the Charging assembly to the bottom part of the Display module s using the two screw bosses assemble the TOP part Caution Be careful not to damage the SMR gasket on the rear of...

Страница 22: ...ten authorisation is strictly prohibited 5 Disassembly and Assembly 5 3 3 Vibrator Assembly 5 3 4 Receiver Assembly Step 1 Wipe off any remaining residue before connecting the motor Step 2 Assemble the vibrator Caution Be sure to push the vibrator far enough into the slot Step 1 Install the receiver on the mounting guide Caution Be sure to not assemble the speaker onto the Indicator guide when ass...

Страница 23: ...n authorisation is strictly prohibited 5 Disassembly and Assembly 5 3 5 Rear Camera Assembly Step 1 Assemble the Main Camera and Wide Camera connector Caution Be careful not to damage the parts around the connector Step 2 Turn the Main board module over Assemble the Macro camera and Bokeh camera connector Caution Be careful not to damage the parts around the connector Step 3 The front of the Main ...

Страница 24: ...hibited 5 Disassembly and Assembly 5 3 6 Main Board Module Assembly Step 1 Connect the lower part of the Main board module to the Display module diagonally and then assemble the top part Step 2 Assemble the Front camera connector Caution Be careful not to damage the parts around the connector Step 3 Use tweezers to connect the coaxial cable to the Main board module Step 4 Use a tweezers to connect...

Страница 25: ...ithout Samsung s written authorisation is strictly prohibited 5 Disassembly and Assembly 5 3 7 FPCB Assembly Step 5 Use a screw to fix the Main board module in the indicated location Step 1 Connect the Display module cable to the Main board connector Connect the Battery connector to the Main board Caution Be careful not to damage any nearby components Be careful not to damage the battery ...

Страница 26: ... from this document without Samsung s written authorisation is strictly prohibited 5 Disassembly and Assembly 5 3 8 Rear TOP BTM Rear Assembly Step 1 Assemble the BTM manually When attaching the BTM ANT ASSY to the front secure the top part first Check the Coaxial cable and assemble it before assembling the BTM ANT ASSY Step 2 Assemble the TOP ANT manually Main Board ...

Страница 27: ... subject to change without prior notice Distribution transmission or infringement of any content or data from this document without Samsung s written authorisation is strictly prohibited 5 Disassembly and Assembly Step 3 Install 13 screws in the indicated positions ...

Страница 28: ... strictly prohibited 5 Disassembly and Assembly 5 3 9 Back Cover Assembly Step 1 Connect the Fingerprint key conn Ensure that the Conn is fully connected and not sticking out Step 2 Tip the rear part at a 45 degree angle and assemble the lower part first Assemble it in the order of lower part left part Side key Upper part left Upper part right Right and then close the hook After completion insure ...

Страница 29: ...e Distribution transmission or infringement of any content or data from this document without Samsung s written authorisation is strictly prohibited 5 Disassembly and Assembly 5 3 10 SIM Tray Assembly Step 1 Insert the SIM Tray Finish After finishing the last step ensure that there are no abnormalities ...

Страница 30: ... another malfunction has occurred from the repair please visit a Samsung service centre to receive further action Any malfunctions caused by your repair may incur additional repair charges In order to improve the device the Samsung members app may update the UI and functions without any prior notice Tip Making an inquiry about a product or sending your opinion in will require logging in with a Sam...

Страница 31: ...nsmission or infringement of any content or data from this document without Samsung s written authorisation is strictly prohibited 6 Quality Test Step 3 Check the test result 1 Blue coloured Check Mark Looking good and no issue 2 Red coloured Exclamation Mark Need to further checking Follow the instruction from the App ...

Страница 32: ...g s written authorisation is strictly prohibited 6 Quality Test 6 2 Interactive checks Step 1 Run Samsung Members Need to Log in Step 2 Tap Get Help and select test items Step 3 1 When everything is OK only Normal will be displayed 2 When something is abnormal solutions will be displayed on the bottom and failed item will be emphasised with red circle and exclamation mark on Interactive checks scr...

Страница 33: ... Measured by comprehensive battery values Capacity Battery Capacity Charging Charging source status Displayed only when the device is connected to charger Bluetooth 1 Purpose Check whether the Bluetooth can search other Bluetooth devices 2 Before Diagnosis Turn on Bluetooth Prepare other Bluetooth device 3 How to check Automatic Samsung Members will try to search other Bluetooth devices The number...

Страница 34: ...le Wi Fi Routers will be displayed 4 Provided information Status If the device can search Wi Fi Routers normally the status will be Normal Available devices The number of searchable 5 To test this more accurately Check the Wi Fi is turned on Check the Wi Fi Routers is working normally Touch screen 1 Purpose Check all areas of Touch screen is working normally 2 How to check Tap or drag all rectangl...

Страница 35: ...ctangles on a test screen with S Pen If the touch screen recognises your finger normally the rectangle will turn blue 2 Move S Pen from A to B keeping it about 1cm the screen Hovering test Blue circle will be moved according to S Pen 3 To test this more accurately Clear the screen and try again FAQ which displayed when failed includes more information This test is available only for Note series Ha...

Страница 36: ... the Vibration motor is working normally 2 How to check 1 Tap the Vibration on Vibration test screen 2 Vibration will be output 3 If you feel vibration normally tap Yes Mic 1 Purpose Check the Microphone is working normally 2 How to check 1 Tap the Record on Mic test screen 2 Say something for recording 3 After recoding tap Play 4 If you hear what you recorded normally tap Yes 3 To test this more ...

Страница 37: ... speaker test screen 2 If you can hear music tap Yes 3 Tap Speaker on Media speaker test screen 4 If you can hear music tap Yes 3 To test this more accurately If you cannot hear music please try again after volume up Camera 1 Purpose Check the rear front cameras are working normally 2 How to check 1 Tap the camera button to test the rear camera Taken picture will be displayed 2 Tap the camera butt...

Страница 38: ...card status Service provider Network carrier of SIM card Number Phone number 4 To test this more accurately Please try again after removing the SIM card tray and reseating the SIM card If possible please try again with another SIM card Fingerprints 1 Purpose Check the Fingerprint scanner is working 2 How to check Place your finger on the fingerprint test screen Samsung Members will check your fing...

Страница 39: ...gister your Iris in Biometrics and security settings 2 Open Iris test screen and scan your iris This test is available only in the devices which have Iris scanner Charger USB port 1 Purpose Check the port recognise the charger and USB cable normally 2 How to check 1 Open the Charger USB port test screen 2 Connect charger or USB cable 3 Check the Status is correct 3 To test this more accurately USB...

Страница 40: ...bited 6 Quality Test Heart rate sensor 1 Purpose Check the heart rate sensor is working 2 How to check Automatic Samsung Members will check hear rate sensor is working This test is available only in the devices which have heart rate sensor Head phone jack 1 Purpose Check the Headphone jack recognises headphone normally 2 How to check Connect the headphones 3 To test this more accurately If possibl...

Страница 41: ...tent or data from this document without Samsung s written authorisation is strictly prohibited 6 Quality Test Wireless charging 1 Purpose Check the Wireless charging working 2 Before Diagnosis Prepare Wireless charger 3 How to check Put the device on a wireless charger 4 To test this more accurately If possible please try with the Samsung Genuine charger ...

Страница 42: ...Samsung Electronics Co Ltd 2021 08 Rev 1 1 This Service Manual is a property of Samsung Electronics Co Ltd Any unauthorised use of Manual can be punished under applicable International and or domestic law ...

Страница 43: ...RCV CONTACK SENSOR Proxi GP2AP110S00F FINGER PRINT BM23FR0 8 10DS 0 35V Accel LIS2DLC12TR SIM SD CARD CAF99 06033 1534RF CAF00 21134 1537RF CAF11 08136 1522RF REAR CAMERA 16M 5M UW 2M B 2M M FRONT CAMERA 8M BB AP RF LB MB TRANCEIVER MT6177MV B HB HB FEMID SFMD3L0F001 PAM WIPS33232 01 SP8T MXD8680S DRX DRX LNA BANK MXD83E4W GRIP1 2 A96T356HF BATTERY CON 505004 0811 MOTOR MAIN FPCB 48pin 24 5843 048...

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