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It is recommended to create a recovery drive to troubleshoot and fix problems that may occur with Windows. Dell proposes multiple
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Options

Troubleshooting

Содержание Latitude 5550

Страница 1: ...Dell Precision 5550 Service Manual Regulatory Model P91F Regulatory Type P91F001 May 2020 Rev A00 ...

Страница 2: ...ential damage to hardware or loss of data and tells you how to avoid the problem WARNING A WARNING indicates a potential for property damage personal injury or death 2020 Dell Inc or its subsidiaries All rights reserved Dell EMC and other trademarks are trademarks of Dell Inc or its subsidiaries Other trademarks may be trademarks of their respective owners ...

Страница 3: ...7 Installing the memory 18 Solid state drive 19 Removing the solid state drive1 19 Installing the solid state drive1 20 Removing the solid state drive2 21 Installing the solid state drive2 22 Installing the M 2 2230 solid state drive 23 Fans 24 Removing the right fan 24 Installing the right fan 25 Removing the left fan 26 Installing the left fan 27 Heat sink 28 Removing the heat sink 28 Installing...

Страница 4: ...p program 47 Navigation keys 47 Boot Sequence 48 One time boot menu 48 System setup options 48 Clearing CMOS settings 57 Clearing BIOS System Setup and System passwords 58 5 Troubleshooting 59 System diagnostic lights 59 SupportAssist diagnostics 60 Recovering the operating system 60 Flashing the BIOS 60 Flea power release 61 WiFi power cycle 61 Flashing BIOS USB key 61 Backup media and recovery o...

Страница 5: ...onnect your computer from all power sources before opening the computer cover or panels After you finish working inside the computer replace all covers panels and screws before connecting your computer to an electrical outlet CAUTION To avoid damaging the computer ensure that the work surface is flat dry and clean CAUTION To avoid damaging the components and cards handle them by their edges and av...

Страница 6: ...e anti static packing material until you are ready to install the component Before unwrapping the anti static packaging ensure that you discharge static electricity from your body Before transporting a static sensitive component place it in an anti static container or packaging ESD field service kit The unmonitored Field Service kit is the most commonly used service kit Each Field Service kit incl...

Страница 7: ...devices should be removed from packaging only at an ESD protected work surface and parts should never be placed on top of the ESD bag because only the inside of the bag is shielded Always place parts in your hand on the ESD mat in the system or inside an anti static bag Transporting Sensitive Components When transporting ESD sensitive components such as replacement parts or parts to be returned to...

Страница 8: ... computers have magnetic surfaces Ensure that the screws are not left attached to such surface when replacing a component NOTE Screw color may vary with the configuration ordered Table 1 Screw list Component Secured to Screw type Quantity Screw image Base cover Palm rest and keyboard assembly M2x3 8 Battery Palm rest and keyboard assembly M2x3 4 Battery Palm rest and keyboard assembly M2x4 4 Right...

Страница 9: ... keyboard assembly M1 6x3 2 Left hinge System board and palm rest and keyboard assembly M2 5x5 5 4 Right hinge System board and palm rest and keyboard assembly M2 5x5 5 4 Wireless card bracket System board M1 6x3 1 System board Palm rest and keyboard assembly M2x4 2 Touchpad Palm rest and keyboard assembly M1 6x2 5 4 Touchpad Palm rest and keyboard assembly M2x2 4 Major components of your system T...

Страница 10: ...lay assembly 11 Palm rest and keyboard assembly 12 Wireless card bracket 13 I O board shield 14 I O board 15 USB Type C port bracket 16 I O board cable 17 Left fan 18 Display assembly cable bracket 19 Solid state drive 2 20 Solid state drive 2 thermal bracket 21 Solid state drive 1 22 Solid state drive 1 thermal bracket 10 Removing and installing components ...

Страница 11: ...urchased by the customer Contact your Dell sales representative for purchase options Base cover Removing the base cover Prerequisites 1 Follow the procedure in Before working inside your computer About this task The following images indicate the location of the base cover and provide a visual representation of the removal procedure Removing and installing components 11 ...

Страница 12: ...12 Removing and installing components ...

Страница 13: ...e antennas and audio daughter board Place the base cover on a clean surface to avoid damage to the pins 2 Starting from the bottom left corner use a plastic scribe to pry the base cover in the direction of the arrows to release the base cover from the palm rest and keyboard assembly 3 Grasp the left side and the right side of the base cover and remove the base cover from the palm rest and keyboard...

Страница 14: ... the BIOS when this error appears and set the date and time on your computer to resume normal functionality 4 Disconnect the battery cable from the system board 5 Turn your computer over and press the power button for 15 seconds to drain the flea power Installing the base cover Prerequisites If you are replacing a component remove the existing component before performing the installation procedure...

Страница 15: ...er to the palm rest and keyboard assembly Next steps NOTE After your computer is reassembled and powered on it prompts for the Real Time Clock RTC reset When the RTC reset cycle occurs the computer restarts several times and then an error message is displayed Time of day not set Enter the BIOS when this error appears and set the date and time on your computer to resume normal functionality 1 Follo...

Страница 16: ...our screws M2x4 that secure the battery to the palm rest and keyboard assembly 3 Remove the four screws M2x3 that secure the battery to the palm rest and keyboard assembly 4 Peel the tapes that secure the speaker cable to the battery 5 Lift the battery off the palm rest and keyboard assembly Installing the battery Prerequisites If you are replacing a component remove the existing component before ...

Страница 17: ...e battery to the palm rest and keyboard assembly 5 Connect the battery cable to the system board Next steps 1 Install the base cover 2 Follow the procedure in After working inside your computer Memory modules Removing the memory Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the base cover About this task The following image indicates the location of the memor...

Страница 18: ...peat step 1 and step 2 to remove the other memory module if available on your computer Installing the memory Prerequisites If you are replacing a component remove the existing component before performing the installation procedure About this task The following image indicates the location of the memory modules and provides a visual representation of the installation procedure 18 Removing and insta...

Страница 19: ...base cover 2 Follow the procedure in After working inside your computer Solid state drive Removing the solid state drive1 Prerequisites 1 Follow the procedure in Before working inside your computer CAUTION Solid state drives are fragile Exercise care when handling the solid state drive CAUTION To avoid data loss do not remove the solid state drive while the computer is turned on or is in sleep sta...

Страница 20: ...ive1 from the solid state drive slot Installing the solid state drive1 Prerequisites If you are replacing a component remove the existing component before performing the installation procedure CAUTION Solid state drives are fragile Exercise care when handling the solid state drive About this task The following image indicates the location of the solid state drive1 and provides a visual representat...

Страница 21: ...tate drive1 to the system board Next steps 1 Install the base cover 2 Follow the procedure in After working inside your computer Removing the solid state drive2 Prerequisites 1 Follow the procedure in Before working inside your computer CAUTION Solid state drives are fragile Exercise care when handling the solid state drive CAUTION To avoid data loss do not remove the solid state drive while the c...

Страница 22: ...e performing the installation procedure CAUTION Solid state drives are fragile Exercise care when handling the solid state drive NOTE Your computer supports 2 solid state drive slots Solid state drive1 is the primary slot and solid state drive2 is the secondary slot If you are installing only one solid state drive install the drive to the primary slot Install the second solid state drive if availa...

Страница 23: ...rking inside your computer Installing the M 2 2230 solid state drive Prerequisites If you are replacing a component remove the existing component before performing the installation procedure About this task This computer supports two solid state drive form factors M 2 2230 M 2 2280 If you are replacing the M 2 2280 solid state drive with an M 2 2230 solid state drive the following images indicate ...

Страница 24: ...e M 2 2230 solid state drive card to the solid state drive card slot2 see installing the solid state drive2 Fans Removing the right fan Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the base cover About this task The following images indicate the location of the right fan and provide a visual representation of the removal procedure 24 Removing and installing ...

Страница 25: ...at sink and then lift it from the palm rest and keyboard assembly Installing the right fan Prerequisites If you are replacing a component remove the existing component before performing the installation procedure About this task The following images indicate the location of the left fan and provide a visual representation of the installation procedure Removing and installing components 25 ...

Страница 26: ... the system board and palm rest and keyboard assembly Next steps 1 Install the base cover 2 Follow the procedure in After working inside your computer Removing the left fan Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the base cover About this task The following images indicate the location of the left fan and provide a visual representation of the removal p...

Страница 27: ...n cable from the system board 5 Slide the fan out of the heat sink and lift the fan off the palm rest and keyboard assembly Installing the left fan Prerequisites If you are replacing a component remove the existing component before performing the installation procedure About this task The following images indicate the location of the right fan and provide a visual representation of the installatio...

Страница 28: ...er 2 Follow the procedure in After working inside your computer Heat sink Removing the heat sink Prerequisites 1 Follow the procedure in Before working inside your computer CAUTION For maximum cooling of the processor do not touch the heat transfer areas on the heat sink The oils in your skin can reduce the heat transfer capability of the thermal grease NOTE The heat sink may become hot during nor...

Страница 29: ...nent before performing the installation procedure CAUTION Incorrect alignment of the heat sink can damage the system board and processor NOTE If either the system board or the heat sink is replaced use the thermal pad or thermal paste provided in the kit to ensure that thermal conductivity is achieved About this task The following image indicates the location of the heat sink and provides a visual...

Страница 30: ...em board Next steps 1 Install the base cover 2 Follow the procedure in After working inside your computer Speakers Removing the speakers Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the base cover About this task The following image indicates the location of the speakers and provides a visual representation of the removal procedure 30 Removing and installing...

Страница 31: ...peaker cable from the routing guides on the palm rest and keyboard assembly 5 Lift the speakers along with the cables off the palm rest and keyboard assembly Installing the speakers Prerequisites If you are replacing a component remove the existing component before performing the installation procedure About this task The following image indicates the location of the speakers and provides a visual...

Страница 32: ...board assembly 5 Connect the speaker cable to the system board and adhere the tape that secures the speaker cable to the system board Next steps 1 Install the base cover 2 Follow the procedure in After working inside your computer I O board Removing the I O board Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the base cover 3 Remove the right fan About this ta...

Страница 33: ...ft the bracket off the I O board 4 Lift the I O board off the palm rest and keyboard assembly Installing the I O board Prerequisites If you are replacing a component remove the existing component before performing the installation procedure About this task The following image indicates the location of the I O board and provides a visual representation of the installation procedure Removing and ins...

Страница 34: ... board 4 Connect the I O board cable to the connector on the system board and I O board Next steps 1 Install the right fan 2 Install the base cover 3 Follow the procedure in After working inside your computer Display assembly Removing the display assembly Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the base cover About this task The following images indicat...

Страница 35: ...Removing and installing components 35 ...

Страница 36: ... display assembly hingea to the system board and the palm rest and keyboard assembly 6 Slide the palm rest and keyboard assembly from the display assembly 7 After performing all the above steps you are left with display assembly Installing the display assembly Prerequisites If you are replacing a component remove the existing component before performing the installation procedure About this task T...

Страница 37: ...Removing and installing components 37 ...

Страница 38: ...holder with the screw holes on the palm rest and keyboard assembly 6 Connect the touchscreen cable and camera cable to the display assembly cable 7 Replace the two screws M1 6x3 that secure the display assembly cable holder to the palm rest and keyboard assembly NOTE Apply gentle torque when tightening the two screws M1 6x3 to avoid damaging the screw threads 8 Align the screw holes on the display...

Страница 39: ...veral times and then an error message is displayed Time of day not set Enter the BIOS when this error appears and set the date and time on your computer to resume normal functionality 2 Remove the base cover 3 Remove the battery 4 Remove the speakers 5 Remove the memory 6 Remove the solid state drive1 7 Remove the solid state drive2 8 Remove the heat sink NOTE The system board can be removed or in...

Страница 40: ...40 Removing and installing components ...

Страница 41: ...he system board 11 Remove the two screws M2x4 that secure the system board to the palm rest and keyboard assembly 12 Lift the system board off the palm rest and keyboard assembly Installing the system board Prerequisites If you are replacing a component remove the existing component before performing the installation procedure NOTE The Service Tag of your computer is stored in the system board Ent...

Страница 42: ...d Figure 2 System board connectors 1 Fingerprint reader board cable 2 Antenna cables 3 Keyboard control board cable The following images indicate the location of the system board and provide a visual representation of the installation procedure 42 Removing and installing components ...

Страница 43: ... antenna cables to the wireless card 10 Align the screw hole on the wireless card bracket with the screw hole on the system board 11 Replace the screw M1 6x3 that secures the wireless card bracket to the system board 12 Connect the touch screen cable and camera cable to the display assembly cable 13 Replace the two screws M1 6x3 that secure the display assembly cable holder to the palm rest and ke...

Страница 44: ...ink NOTE The system board can be removed or installed together with the heat sink attached This simplifies the procedure and avoids breaking the thermal bond between the system board and the heat sink 9 Remove the left fan 10 Remove the right fan 11 Remove the I O board 12 Remove the display assembly 13 Remove the system board About this task The following image indicates the palm rest and keyboar...

Страница 45: ...tion procedure Steps Place the palm rest and keyboard assembly on a flat surface Next steps 1 Install the system board 2 Install the display assembly 3 Install the I O board 4 Install the left fan 5 Install the right fan 6 Install the heat sink 7 Install the solid state drive2 8 Install the solid state drive1 9 Install the memory 10 Install the battery 11 Install the speakers 12 Install the base c...

Страница 46: ...rivers and downloads When troubleshooting downloading or installing drivers it is recommended that you read the Dell Knowledge Based article Drivers and Downloads FAQ SLN128938 3 46 Drivers and downloads ...

Страница 47: ...e devices Topics Entering BIOS setup program Navigation keys Boot Sequence One time boot menu System setup options Clearing CMOS settings Clearing BIOS System Setup and System passwords Entering BIOS setup program About this task Turn on or restart your computer and press F2 immediately Navigation keys NOTE For most of the System Setup options changes that you make are recorded but do not take eff...

Страница 48: ... the diagnostic option The boot menu options are Removable Drive if available STXXXX Drive if available NOTE XXX denotes the SATA drive number Optical Drive if available SATA Hard Drive if available Diagnostics The boot sequence screen also displays the option to access the System Setup screen System setup options NOTE Depending on this computer and its installed devices the items that are listed ...

Страница 49: ... computer memory available Memory Speed Displays the memory speed Memory Channel Mode Displays single or dual channel mode Memory Technology Displays the technology that is used for the memory DIMM SLOT 1 Displays the memory card installed in slot 1 DIMM SLOT 2 Displays the memory card installed in slot 2 DEVICES Panel Type Displays the Panel Type of the computer Video Controller Displays the inte...

Страница 50: ...gures operating mode of the integrated SATA hard drive controller Default RAID On SATA is configured to support RAID Intel Rapid Restore Technology Drive Information Displays the information of various onboard drives Enable SMART Reporting Enables or disables Self Monitoring Analysis and Reporting Technology SMART Default OFF Enable Audio Enables or disables all integrated audio controller Default...

Страница 51: ...out on AC Configures the timeout value for the keyboard when an AC adapter is connected to the computer The keyboard backlight timeout value is only effect when the backlight is enabled Default 10 seconds Keyboard Backlight Timeout on Battery Configures the timeout value for the keyboard when the computer is running on battery The keyboard backlight timeout value is only effect when the backlight ...

Страница 52: ...to control whether the TPM Endorsement Hierarchy is available to the OS Disabling this setting restricts the ability to use the TPM for signature operations Default ON Key Storage Enable Enables to control whether the TPM Endorsement Hierarchy is available to the OS Disabling this setting restricts the ability to use the TPM for storing owner data Default ON SHA 256 Enables or disables the BIOS an...

Страница 53: ...ter Password Lockout Enables or disables the master password support Default OFF Table 9 System setup options Secure Boot menu Secure Boot Enable Secure Boot Enables or disables the computer to boos using only validated boot software Default ON NOTE For Secure Boot to be enabled the computer needs to be in UEFI boot mode and the Enable Legacy Option ROMs option needs to be turned off Secure Boot M...

Страница 54: ...wer Management menu Power Management Wake on AC Enables the computer to turn on and go to boot when AC power is supplied to the computer Default OFF Wake on Dell USB C Dock Enables connecting a Dell USB C Dock to wake the computer from Standby Default ON Auto On Time Enables the computer to automatically power on for defined days and times Default Disabled The system will not automatically power u...

Страница 55: ...le Enable or disable internal WLAN Bluetooth devices By default WLAN is selected By default Bluetooth is selected Table 14 System setup options POST Behavior menu POST Behavior Numlock Enable Enable Numlock Enables or disables Numlock when the computer boots Default ON Fn Lock Enables or disables the Fn lock mode Default ON Lock Mode Default Lock Mode Secondary Lock Mode Secondary If this option i...

Страница 56: ...n Technology Enables the computer to run a virtual machine monitor VMM Default ON VT for Direct I O Enables the computer to perform Virtualization Technology for Direct I O VT d VT d is an Intel method that provides virtualization for memory map I O Default ON Table 16 System setup options Maintenance menu Maintenance Asset Tag Asset Tag Creates a system Asset Tag that can be used by an IT adminis...

Страница 57: ...al Event Log Clear Thermal Event Log Select keep or clear Thermal events Default Keep Table 18 System setup options SupportAssist menu SupportAssist Dell Auto OS Recovery Threshold Controls the automatic boot flow for SupportAssist System Resolution Console and for Dell operating system Recovery tool Default 2 SupportAssist OS Recovery Enables or disables the boot flow for SupportAssist operating ...

Страница 58: ... your computer follow the steps in installing the base cover 5 Turn on your computer Clearing BIOS System Setup and System passwords About this task To clear the system or BIOS passwords contact Dell technical support as described at www dell com contactdell NOTE For information on how to reset Windows or application passwords refer to the documentation accompanying Windows or your application 58 ...

Страница 59: ...omputer is in sleep state hibernation or turned off Blinking power and battery charge status light The power and battery status light blinks alternately between amber and off to indicate issues that your computer is encountering For example the power and battery status light blinks amber two times followed by a pause and then blinks white three times followed by a pause This 2 3 pattern continues ...

Страница 60: ...em Performance Check Recovering the operating system When your computer is unable to boot to the operating system even after repeated attempts it automatically starts Dell SupportAssist OS Recovery Dell SupportAssist OS Recovery is a standalone tool that is preinstalled in all Dell computers installed with Windows 10 operating system It consists of tools to diagnose and troubleshoot issues that ma...

Страница 61: ...task If your computer is unable to access the Internet due to WiFi connectivity issues a WiFi power cycle procedure may be performed The following procedure provides the instructions on how to conduct a WiFi power cycle NOTE Some ISPs Internet Service Providers provide a modem router combo device Steps 1 Turn off your computer 2 Turn off the modem 3 Turn off the wireless router 4 Wait for 30 secon...

Страница 62: ...ate a recovery drive to troubleshoot and fix problems that may occur with Windows Dell proposes multiple options for recovering Windows operating system on your Dell PC For more information see Dell Windows Backup Media and Recovery Options 62 Troubleshooting ...

Страница 63: ... topic or model number and then click or tap the search icon to view the related articles Learn and know the following information about your product Product specifications Operating system Setting up and using your product Data backup Troubleshooting and diagnostics Factory and system restore BIOS information See Me and My Dell at www dell com support manuals To locate the Me and My Dell relevant...

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