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Diagnostics

Instead of beep codes, errors are indicated by the bicolor Battery Charge/Status LED. A specific blink pattern is followed by
flashing a pattern of flashes in amber, followed by white.

The diagnostic pattern consists of a two-digit number being represented by a first group of LED blinks (1 through 9) in amber,
followed by a 1.5 second pause with the LED off, and then a second group of LED blinks (1 through 9) in white. This is then
followed by a three second pause, with the LED off, before repeating over again. Each LED blink takes 1.5 seconds.

The system will not shut down when displaying the Diagnostic Error Codes. Diagnostic Error Codes will always supersede any
other use of the LED. For instance, on Notebooks, battery codes for Low Battery or Battery Failure situations will not be
displayed when Diagnostic Error Codes are being displayed.

Table 21. Disgnostic LED states

Amber LED state

White LED state

System state

Notes

2

1

CPU failure

Run the Intel CPU diagnostics
tools

If problem persists, replace
the system board

2

2

System board failure (included
BIOS corruption or ROM
error)

Flash latest BIOS version

If problem persists, replace
the system board

2

3

No memory/ RAM detected

Confirm that the memory
module is installed properly

If problem persists, replace
the system board

2

4

Memory/ RAM failure

Reset the memory module

If problem persists, replace
the system board

2

5

Invalid memory installed

Reset the memory module

If problem persists, replace
the system board

2

6

System board/ Chipset error

Flash latest BIOS version

If problem persists, replace
the system board

2

7

LCD failure

Flash latest BIOS version

If problem persists, replace
the system board

2

8

LCD Power rail failure

Replace the system board

3

1

CMOS battery failure

Reset the CMOS battery
connection

If problem persists, replace
the system board

3

2

PCI or Video card/ chip failure Replace the system board

3

3

BIOS Recovery Image not
found

Flash latest BIOS version

If problem persists, replace
the system board

84

Troubleshooting

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Содержание 19P76

Страница 1: ...Latitude 9520 Service Manual Regulatory Model P94F P95F Regulatory Type P94F002 P95F002 March 2021 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 2021 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: ...6 Base cover 17 Removing the base cover 17 Installing the base cover 19 WWAN card 20 Removing the WWAN card 20 Installing the WWAN card 21 Solid state drive 23 Removing the solid state drive 23 Installing the solid state drive 24 Speakers 25 Removing the speaker 25 Installing the speaker 26 System fan 28 Removing the system fan 28 Installing the system fan 28 I O daughter board power cable 29 Remo...

Страница 4: ...y assembly 52 Keyboard 54 Removing the keyboard 54 Installing the keyboard 57 Palmrest assembly 59 Removing the palmrest assembly 59 Chapter 3 Drivers and downloads 61 Chapter 4 System setup 62 Boot menu 62 Navigation keys 63 Boot Sequence 63 System setup options 63 Overview 63 Boot Configuration 65 Integrated Devices 66 Storage 67 Display 68 Connection 69 Power 69 Security 71 Passwords 73 Update ...

Страница 5: ...ter 5 Troubleshooting 83 Dell SupportAssist Pre boot System Performance Check diagnostics 83 Running the SupportAssist Pre Boot System Performance Check 83 Diagnostics 84 Diagnostic error messages 85 System error messages 88 Wi Fi power cycle 89 Chapter 6 Getting help 90 Contacting Dell 90 Contents 5 ...

Страница 6: ...not covered by your warranty See the safety instructions that is shipped with the product or at www dell com regulatory_compliance CAUTION Before touching anything inside your computer ground yourself by touching an unpainted metal surface such as the metal at the back of the computer While you work periodically touch an unpainted metal surface to dissipate static electricity which could harm inte...

Страница 7: ... power from the system without disconnecting the battery cable from the system board To enter the Service Mode 1 Shut down the system and disconnect the AC adapter from the system 2 Press and hold the B key on the keyboard and then press the power button The system will boot up 3 Press any key to proceed when the Owner Tag information is displayed on the screen NOTE The Service Mode procedure will...

Страница 8: ...isassembly instructions Observe the following safety precautions before you perform any installation or break fix procedures involving disassembly or reassembly Turn off the system and all attached peripherals Disconnect the system and all attached peripherals from AC power Disconnect all network cables telephone and telecommunications lines from the system Use an ESD field service kit when workin...

Страница 9: ... represent approximately 80 percent of ESD related failures The high rate of intermittent failures means that most of the time when damage occurs it is not immediately recognizable The DIMM receives a static shock but the tracing is merely weakened and does not immediately produce outward symptoms related to the damage The weakened trace may take weeks or months to melt and in the meantime may cau...

Страница 10: ...ld also be free of insulators that can cause an ESD event On the work area insulators such as Styrofoam and other plastics should always be moved at least 12 inches or 30 centimeters away from sensitive parts before physically handling any hardware components ESD Packaging All ESD sensitive devices must be shipped and received in static safe packaging Metal static shielded bags are preferred Howev...

Страница 11: ...lowing tools Phillips screwdriver 1 Plastic scribe Screw list NOTE When removing screws from a component it is recommended to note the screw type the quantity of screws and then place them in a screw storage box This is to ensure that the correct number of screws and correct screw type is restored when the component is replaced NOTE Some systems have magnetic surfaces Ensure that the screws are no...

Страница 12: ... WWAN Captive screw 1 M1 6x4 5 1 Smart card reader M2x2 2 Solid state drive M2x2 1 Speaker M1 6x1 8 4 I O board M1 6x3 5 4 System fan M2x3 3 Display cable bracket M1 6x3 5 1 Display assembly M2 5x5 6 M1 6x3 5 1 Power button M1 5x2 5 3 M2 5x5 3 Fingerprint bracket M1 5x2 5 3 System board M1 6x3 5 9 12 Removing and installing components ...

Страница 13: ...crew type Quantity Image M2 5x5 1 M1 6x4 5 1 Keyboard M1 6x2 4 M1 6x1 5 36 Major components of your system 1 Base cover 2 Solid state drive shield 3 Solid State drive 4 WWAN shield 5 WWAN Card 6 System board Removing and installing components 13 ...

Страница 14: ...ing the SIM card tray Prerequisites Follow the procedure in before working inside your computer About this task The following image provides a visual representation of the SIM card tray removal procedure Steps 1 Insert the SIM card removal pin into the release hole to release the SIM card tray 14 Removing and installing components ...

Страница 15: ...fore the installation procedure About this task The following image provides a visual representation of the SIM card tray installation procedure Steps 1 Insert the SIM card removal pin into the release hole to remove the SIM card tray 2 Push the pin to disengage the lock and eject the SIM card tray 3 Slide the SIM card tray out of the slot on the system 4 Align and place the Micro SIM card in the ...

Страница 16: ...ation of the microSD card removal procedure Steps 1 Push the microSD card to eject it from the slot 2 Remove the microSD card from the system Installing the Micro SD card Prerequisites If you are replacing a component remove the existing component before performing the installation procedure About this task The following image provides a visual representation of the Micro SD card installation proc...

Страница 17: ...s 1 Follow the procedure in After working on your computer Base cover Removing the base cover Prerequisites 1 Follow the procedure in before working inside your computer 2 Remove the microSD card 3 Remove the SIM card tray 4 Enter service mode Removing and installing components 17 ...

Страница 18: ...About this task 18 Removing and installing components ...

Страница 19: ...ge of the base cover NOTE Do not pull the base cover from the top side immediately after prying it from the recesses as this will cause damage to the base cover 3 Pry open the left and right sides of the base cover 4 Pry open the bottom side of the base cover 5 Hold the left and right sides of the base cover and remove it from the system Installing the base cover About this task Removing and insta...

Страница 20: ...he system Next steps 1 Install the SIM card tray 2 Install the microSD card 3 Follow the procedure in After working on your computer WWAN card Removing the WWAN card Prerequisites 1 Follow the procedure in before working inside your computer 2 Remove the microSD card 3 Remove the SIM card tray 4 Enter service mode 5 Remove the base cover 20 Removing and installing components ...

Страница 21: ...ard 3 Lift the WWAN card bracket out of the system 4 Disconnect the antenna cables from the connectors on the WWAN card 5 Slide and remove the WWAN card from the WWAN card slot Installing the WWAN card 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 WWAN card ...

Страница 22: ...the tab on the WWAN card slot NOTE If any of the thermal pads located underneath the WWAN card are detached from the system board when removing the WWAN card from the system adhere them back on the system board 22 Removing and installing components ...

Страница 23: ...all the base cover 2 Install the SIM card tray 3 Install the microSD card 4 Follow the procedure in After working on your computer Solid state drive Removing the solid state drive Prerequisites 1 Follow the procedure in before working inside your computer 2 Remove the microSD card 3 Remove the SIM card tray 4 Enter service mode 5 Remove the base cover About this task The following images indicate ...

Страница 24: ...lid state drive from the solid state drive slot on the system board Installing the solid state drive 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 solid state drive and provides a visual representation of the installation procedure 24 Removing and installing...

Страница 25: ... 4 Align and place the solid state drive shield press to fit it firmly to cover the solid state drive Next steps 1 Install the base cover 2 Install the SIM card tray 3 Install the microSD card 4 Follow the procedure in After working on your computer Speakers Removing the speaker Prerequisites 1 Follow the procedure in before working inside your computer 2 Remove the microSD card 3 Remove the SIM c...

Страница 26: ...d disconnect the battery cable from the system board 2 Disconnect the speaker cable and unroute the speaker cable from the routing guide 3 Remove the four M1 6x1 8 screws that secure the speakers and remove the speakers from the system Installing the speaker Prerequisites If you are replacing a component remove the existing component before performing the installation procedure 26 Removing and ins...

Страница 27: ... 8 screws that secure the speakers to the system 3 Route the speaker cables through the routing guide and connect the speaker cable to the connector 4 Adhere the adhesive tape and reconnect the battery cable to the connector on the system board Next steps 1 Install the base cover 2 Install the SIM card tray 3 Install the microSD card 4 Follow the procedure in After working on your computer Removin...

Страница 28: ...tor on the system board 2 Unroute the I O daughter board cable from the routing guide on the system fan 3 Disconnect the system fan cable from the connector on the system board 4 Remove the three M2x3 screws that secure the system fan 5 Lift the system fan off the palmrest assembly Installing the system fan Prerequisites If you are replacing a component remove the existing component before perform...

Страница 29: ...akers 2 Install the base cover 3 Install the SIM card tray 4 Install the microSD card 5 Follow the procedure in After working on your computer I O daughter board power cable Removing the I O daughter board cable Prerequisites 1 Follow the procedure in before working inside your computer 2 Remove the microSD card 3 Remove the SIM card tray 4 Enter service mode 5 Remove the base cover About this tas...

Страница 30: ...the system fan 4 Remove the I O daughter board cable from the system Installing the I O daughter board cable 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 daughter board cable and provides a visual representation of the installation procedure 30 Removing...

Страница 31: ...SD card 4 Follow the procedure in After working on your computer I O daughter board Removing the I O daughter board Prerequisites 1 Follow the procedure in before working inside your computer 2 Remove the microSD card 3 Remove the SIM card tray 4 Enter service mode 5 Remove the base cover 6 Remove the system fan 7 Remove the I O daughter board About this task The following image indicates the loca...

Страница 32: ... I O daughter board out of the system 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 32 Removing and installing components ...

Страница 33: ...Install the SIM card tray 5 Install the microSD card 6 Follow the procedure in After working on your computer Power button Removing the power button Prerequisites 1 Follow the procedure in before working inside your computer 2 Remove the microSD card 3 Remove the SIM card tray 4 Enter service mode 5 Remove the base cover 6 Remove the system fan 7 Remove the I O daughter board About this task The f...

Страница 34: ... power button assembly from the palm rest and remove the power button assembly from the system Installing the power button Prerequisites If you are replacing a component remove the existing component before performing the installation procedure About this task The following image indicate the location of the power button and provide a visual representation of the installation procedure 34 Removing...

Страница 35: ...card tray 5 Install the microSD card 6 Follow the procedure in After working on your computer Power button with finger print reader optional Removing the power button with fingerprint reader Prerequisites 1 Follow the procedure in before working inside your computer 2 Remove the microSD card 3 Remove the SIM card tray 4 Enter service mode 5 Remove the base cover 6 Remove the system fan 7 Remove th...

Страница 36: ...th fingerprint reader assembly from the palm rest and remove it from the system Installing the power button with fingerprint reader 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 fingerprint reader and provide a visual representation of the installation proce...

Страница 37: ... the SIM card tray 5 Install the microSD card 6 Follow the procedure in After working on your computer Battery Removing the 4 cell battery Prerequisites 1 Follow the procedure in before working inside your computer 2 Remove the microSD card 3 Remove the SIM card tray 4 Remove the base cover NOTE If battery was disconnected from system board for service there will be a delay during system boot up a...

Страница 38: ...eful when unrouting the antenna cables from their routing guides while they are still attached to the wireless card 2 Disconnect the battery cable from the connector on the system board 3 Remove the single M1 6x3 5 screw and four M2x3 screws that secures the battery 4 Lift the battery from the left side of the system and remove the battery from the system Installing the 4 cell battery Prerequisite...

Страница 39: ...nd place the battery on the palmrest and keyboard assembly 2 Replace the single M1 6x3 5 screw and four M2x3 screws to secure the battery in place 3 Reconnect the battery cable to the connector on the system board 4 Route the wireless antenna cables on the routing guides and adhere the adhesive tape Next steps 1 Install the speakers 2 Install the base cover 3 Install the SIM card tray 4 Install th...

Страница 40: ...ireless antenna cables from the routing guides NOTE The cables for the wireless antennas are routed over the plastic bracket at the upper right corner and within the routing channels along the bottom left side of the battery Users must be careful when unrouting the antenna cables from their routing guides while they are still attached to the wireless card 2 Disconnect the battery cable from the co...

Страница 41: ...n the system board 4 Route the wireless antenna cables on the routing guides and adhere the adhesive tape Next steps 1 Install the speakers 2 Install the base cover 3 Install the SIM card tray 4 Install the microSD card 5 Follow the procedure in After working on your computer Smart card reader Removing the smart card reader Prerequisites 1 Follow the procedure in before working inside your compute...

Страница 42: ...e I O daughter board 3 Remove the two screws M2x2 that secure the smart card reader to the palmrest assembly 4 Lift the smart card reader away from the palmrest assembly Installing the smart card reader Prerequisites If you are replacing a component remove the existing component before performing the installation procedure 42 Removing and installing components ...

Страница 43: ...card reader cable to the connector on the I O daughter board and close the latch 4 Connect the touchpad FPC to the connector on the system board and close the latch Next steps 1 Install the battery 2 Install the speakers 3 Install the base cover 4 Install the SIM card tray 5 Install the microSD card 6 Follow the procedure in After working on your computer Removing and installing components 43 ...

Страница 44: ... the SIM card tray 4 Remove the base cover 5 Remove the solid state drive 6 Remove the WWAN card 7 Remove the speakers 8 Remove the battery 9 Remove the system fan About this task The following images indicate the location of the system board assembly and provide a visual representation of the removal procedure 44 Removing and installing components ...

Страница 45: ... sink Do not remove the heat sink from system board The system board can be replaced together with the heat sink attached Steps 1 Remove the single M1 6x3 5 screw that secures the display cable bracket to the system board Removing and installing components 45 ...

Страница 46: ...able WWAN Darwin cable and touchpad FPC from the connector on the system board NOTE To disconnect the WWAN Darwin cable from the system board insert a plastic scribe close to the rear side of the connector and carefully pry in an upward direction 10 Disconnect the I O daughter board data FPC cable from the I O daughter board 11 Remove the three M1 6x3 5 screws that secure the USB Type C bracket to...

Страница 47: ...Removing and installing components 47 ...

Страница 48: ...enings as this will damage the system board When installing the hooks align the positioning studs on the hooks over the openings on the system board and then install the hooks on the system board 8 Route the WWAN antenna cable through the routing guides on the system board and connect them to the WWAN card 9 Connect the Darwin antenna cables to the wireless module and route the cables through the ...

Страница 49: ...ure in before working inside your computer 2 Remove the microSD card 3 Remove the SIM card tray 4 Remove the base cover 5 Remove the battery About this task The following images indicate the location of the display assembly and provide a visual representation of the removal procedure NOTE The display assembly removal procedure is the same for both laptop and convertible chassis Removing and instal...

Страница 50: ...50 Removing and installing components ...

Страница 51: ...peel back the camera cable from the system board NOTE Users must disconnect the display cable from the system board by pulling the pull tab in a direct upward motion to prevent damage to the connector s pins NOTE The camera cable has a tiny latch that locks the cable and secures it to the system board Users must lift this latch to release the camera cable Removing and installing components 51 ...

Страница 52: ...op near the hinges and lift the hinges in the upward direction away from the laptop 5 Lift the display assembly off the laptop Installing the display assembly Prerequisites If you are replacing a component remove the existing component before performing the installation procedure NOTE The display assembly installation procedure is the same for both laptop and convertible chassis About this task Th...

Страница 53: ...Removing and installing components 53 ...

Страница 54: ...oard 4 Place the display cable bracket in place and install the single M1 6x3 5 screw securing the display cable bracket Next steps 1 Install the battery 2 Install the base cover 3 Install the SIM card tray 4 Install the microSD card 5 Follow the procedure in After working on your computer Keyboard Removing the keyboard Prerequisites 1 Follow the procedure in before working inside your computer 2 ...

Страница 55: ... speakers 8 Remove the battery 9 Remove the display assembly 10 Remove the system fan 11 Remove the I O daughter board 12 Remove the system board About this task The following images indicate the location of the keyboard and provide a visual representation of the removal procedure Removing and installing components 55 ...

Страница 56: ...mylar adhesive sheet from the keyboard 2 Disconnect the backlight cable and the keyboard cable from the connectors on the touchpad 3 Peel and remove the touchpad FFC from the keyboard assembly 56 Removing and installing components ...

Страница 57: ...mrest Installing the keyboard 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 keyboard and provides a visual representation of the installation procedure Removing and installing components 57 ...

Страница 58: ... 1 Align and place the keyboard on the palmrest 2 Install the four M1 6x2 and thirty six M1 6x1 5 screws to secure the keyboard 3 Adhere the touchpad FFC to the keyboard 58 Removing and installing components ...

Страница 59: ... After working on your computer Palmrest assembly Removing the palmrest assembly Prerequisites 1 Follow the procedure in before working inside your computer 2 Remove the microSD card 3 Remove the SIM card tray 4 Remove the base cover 5 Remove the solid state drive 6 Remove the WWAN card 7 Remove the speakers 8 Remove the battery 9 Remove the display assembly 10 Remove the system fan 11 Remove the ...

Страница 60: ...n 4 Install the I O daughter board 5 Install the system fan 6 Install the display assembly 7 Install the battery 8 Install the speakers 9 Install the WWAN card 10 Install the solid state drive 11 Install the base cover 12 Install the SIM card tray 13 Install the microSD card 14 Follow the procedure in After working on your computer 60 Removing and installing components ...

Страница 61: ...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 Drivers and downloads 61 ...

Страница 62: ... Boot menu Press F12 when the Dell logo appears to initiate a one time boot menu with a list of the valid boot devices for the system Diagnostics and BIOS Setup options are also included in this menu The devices that are listed on the boot menu depend on the bootable devices in the system This menu is useful when you are attempting to boot to a particular device or to bring up the diagnostics for ...

Страница 63: ...an Access System Setup by pressing F2 key Bring up the one time boot menu by pressing F12 key The one time boot menu displays the devices that you can boot from including the diagnostic option The boot menu options are Removable Drive if available STXXXX Drive NOTE XXXX denotes the SATA drive number Optical Drive if available SATA Hard Drive if available Diagnostics NOTE Choosing Diagnostics displ...

Страница 64: ...tify if the charger is plugged in and mentions the wattage of the charger connected Processor The Processor field provides information related to the CPU on the computer Processor Type This field mentions the CPU model and generation information Maximum Clock Speed This field mentions the maximum clock speed that the CPU is capable of reaching Minimum Clock Speed This field mentions the minimum cl...

Страница 65: ...d on the computer Video BIOS Version The version of the BIOS installed on the computer Audio Controller This field mentions the type of audio controller used on the computer Bluetooth Device This field mentions the type of Bluetooth device available for use on the computer LOM MAC Address This field provides the unique MAC address for the computer Pass Through MAC Address This field provides the M...

Страница 66: ...be manipulated OFF by default Custom Mode Key Management This section helps the user to select the Key Database to allow modification The options available are as below PK Selected by default KEK db dbx Integrated Devices This section provides Integrated Devices details and settings Table 6 Integrated Devices Options Description Date Time Date This section allows the user to change the date which ...

Страница 67: ...lt adapter to execute the PCIe devices UEFI option ROM s during pre boot Disabled by default Disable USB4 PCIE Tunneling This section contains a toggle switch to enable or disable USB4 PCIE Tunneling Disabled by default Video Power only on Type C Ports This section contains a toggle switch to limit Type C port functionality to video or power only Disabled by default Type C Dock Override This secti...

Страница 68: ...formation about the connected and active drives on the computer The following options are available M 2 PCIe SSD 0 Type Device Enable MediaCard This section allows the user to switch all media cards On Off or enable disable the media card in read state only The options are as follows Secure Digital SD Card Enabled by default Secure Digital SD Card Read Only Mode Disabled by default Display This se...

Страница 69: ...that allows the user to enable or disable a feature where the system will sense a connection to a wired network and disable the WLAN or WWAN connection OFF by default HTTP s Boot Feature HTTP s Boot Feature This section contains a toggle switch that allows the user to enable or disable HTTP s Boot capabilities ON by default HTTP s Boot Modes Auto Mode HTTP s Boot automatically extracts Boot URL fr...

Страница 70: ...llows for any external USB devices to charge via the designated USB PowerShare port even when the computer is on sleep mode ON by default Thermal Management This setting allows for cooling fan and processor heat management to adjust system performance noise and temperature The options available are as below Optimized Standard setting for cooling fan and processor heat management selected by defaul...

Страница 71: ...fault Security This section provides security details and settings Table 11 Security continued Options Description TPM 2 0 Security TPM 2 0 Security On This section contains a toggle switch to select whether Trusted Platform Module TPM is visible to the Operating System OS ON by default Attestation Enable This section contains a toggle switch which lets the user control whether the TPM Endorsement...

Страница 72: ...ity Mitigation This section allows the user to enable or disable UEFI SMM security Mitigation protections ON by default Data Wipe on Next Boot Start Data Wipe This section contains toggle switch which when enabled ensures that the BIOS will queue up a data wipe cycle for storage device s connected to the system board on the next reboot OFF by default Absolute Absolute This section lets the user en...

Страница 73: ...the user to set change or delete the storage drive password Password Configurator Upper Case Letter Enable or disable reinforced use of upper case letters OFF by default Lower Case Letter Enable or disable reinforced use of lower case letters OFF by default Digit Enable or disable reinforced use of at least one digit OFF by default Special Character Enable or disable reinforced use of at least one...

Страница 74: ...recovery from certain corrupted BIOS conditions from a recovery file on the user s primary hard drive or an external USB key ON by default BIOS Downgrade Allow BIOS Downgrade This field contains a toggle switch which allows the user to enable or disable flashing of the system firmware to previous revisions SupportAssist OS Recovery SupportAssist OS Recovery This field contains a toggle switch whic...

Страница 75: ...any special LAN signals selected by default LAN only Allows the system to be powered on by a special LAN signal from a network computer LAN with PXE Boot Allows the system to wake up from S4 or S5 state and boot to PXE Auto On Time Auto On Time This field allows the user to set defined days time when the sytem can automatically power on The options here are as follows Disabled selected by default ...

Страница 76: ...eyboard Backlight Timeout on AC Keyboard Backlight Timeout on AC This field allows the user to define the timeout value for the backlight when the AC adapter is connected to the computer The options here are as follows 5 seconds 10 seconds selected by default 15 seconds 30 seconds 1 minute 5 minutes 15 minutes Never Keyboard Backlight Timeout on Battery Keyboard Backlight Timeout on Battery This f...

Страница 77: ...POST USB C Warnings Enable Dock Warning Messages This field contains a toggle switch to enable or disable dock warning messages enabled by default Fastboot Fastboot This field allows the user to configure the speed of the UEFI boot process The options here are as follows Minimal reduces boot time by skipping certain hardware and configuration initialization during boot selected by default Thorough...

Страница 78: ...o configure Intel TXT Trusted Platform Module TPM Intel Hyper Threading All CPU cores Multi Core Support Intel Virtualization technology Intel VT for Direct I O Performance This section provides Performance settings Table 18 Performance Options Description Multi Core Support Active Cores This field allows the user to configure the number of active cores on the computer The options are as follows A...

Страница 79: ...nhance dynamic power tuning capabilities based on detected workloads disabled by default System Logs This section contains BIOS Thermal and Power event logs Table 19 System Logs Options Description BIOS Event Log Clear BIOS Event log This field contains a toggle switch to Keep or Clear BIOS Event logs It also lists all saved events Date Time Message Keep selected by default Thermal Event Log Clear...

Страница 80: ...pdating the BIOS the next time you reboot the system it will not recognize the BitLocker key You will then be prompted to enter the recovery key to progress and the system will ask for this on each reboot If the recovery key is not known this can result in data loss or an unnecessary operating system reinstall For more information about this subject see Knowledge Article Updating the BIOS on Dell ...

Страница 81: ...your computer CAUTION Anyone can access the data stored on your computer if it is not locked and left unattended NOTE System and setup password feature is disabled Assigning a system setup password Prerequisites You can assign a new System or Admin Password only when the status is Not Set About this task To enter the system setup press F2 immediately after a power on or reboot Steps 1 In the Syste...

Страница 82: ...existing System or Setup password if the Password Status is Locked About this task To enter the System Setup press F2 immediately after a power on or reboot Steps 1 In the System BIOS or System Setup screen select System Security and press Enter The System Security screen is displayed 2 In the System Security screen verify that Password Status is Unlocked 3 Select System Password alter or delete t...

Страница 83: ...successfully View error messages that inform you of problems encountered during testing NOTE Some tests for specific devices require user interaction Always ensure that you are present at the computer terminal when the diagnostic tests are performed For more information see Resolve Hardware Issues With Built in and Online Diagnostics SupportAssist ePSA ePSA or PSA Error Codes Running the SupportAs...

Страница 84: ...ED state System state Notes 2 1 CPU failure Run the Intel CPU diagnostics tools If problem persists replace the system board 2 2 System board failure included BIOS corruption or ROM error Flash latest BIOS version If problem persists replace the system board 2 3 No memory RAM detected Confirm that the memory module is installed properly If problem persists replace the system board 2 4 Memory RAM f...

Страница 85: ...gram BAD COMMAND OR FILE NAME Ensure that you have spelled the command correctly put spaces in the proper place and used the correct path name CACHE DISABLED DUE TO FAILURE The primary cache internal to the microprocessor has failed Contact Dell CD DRIVE CONTROLLER FAILURE The optical drive does not respond to commands from the computer DATA ERROR The hard drive cannot read the data DECREASING AVA...

Страница 86: ...rive and boot the computer from an optical drive Then shut down the computer reinstall the hard drive and restart the computer If the problem persists try another drive Run the Hard Disk Drive tests in Dell Diagnostics HARD DISK DRIVE READ FAILURE The hard drive may be defective Shut down the computer remove the hard drive and boot the computer from an optical Then shut down the computer reinstall...

Страница 87: ...orrupted Contact Dell NO TIMER TICK INTERRUPT A chip on the system board may be malfunctioning Run the System Set tests in Dell Diagnostics NOT ENOUGH MEMORY OR RESOURCES EXIT SOME PROGRAMS AND TRY AGAIN You have too many programs open Close all windows and open the program that you want to use OPERATING SYSTEM NOT FOUND Reinstall the operating system If the problem persists Contact Dell OPTIONAL ...

Страница 88: ...ete the boot routine three consecutive times for the same error CMOS checksum error RTC is reset BIOS Setup default has been loaded CPU fan failure CPU fan has failed System fan failure System fan has failed Hard disk drive failure Possible hard disk drive failure during POST Keyboard failure Keyboard failure or loose cable If reseating the cable does not solve the problem replace the keyboard No ...

Страница 89: ...d 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 seconds 5 Turn on the wireless router 6 Turn on the modem 7 Turn on your computer Troubleshooting 89 ...

Страница 90: ... and telephone based support and service options Availability varies by country and product and some services may not be available in your area To contact Dell for sales technical support or customer service issues Steps 1 Go to Dell com support 2 Select your support category 3 Verify your country or region in the Choose a Country Region drop down list at the bottom of the page 4 Select the approp...

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