Dell D28M Service Manual Download Page 1

Page: 1 / 94

OptiPlex 7071 Tower

Service Manual

Regulatory Model: D28M
Regulatory Type: D28M001

Summary of Contents for D28M

Page 1: ...OptiPlex 7071 Tower Service Manual Regulatory Model D28M Regulatory Type D28M001 ...

Page 2: ...amage 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 2019 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 2019 09 Rev A00 ...

Page 3: ... drive 17 2 5 inch hard drive bracket 18 Removing the 2 5 inch hard drive bracket 18 Installing the 2 5 inch hard drive bracket 18 3 5 inch hard drive 19 Removing the 3 5 inch hard drive 19 Installing the 3 5 inch hard drive 20 3 5 inch hard drive bracket 22 Removing the 3 5 inch hard drive bracket 22 Installing the 3 5 inch hard drive bracket 22 Slim optical drive 23 Removing the Optical Disk Dri...

Page 4: ...at sink assembly 45 Installing the processor fan and 95 W heat sink assembly 46 Removing the processor fan and 65 W heat sink assembly 47 Installing the processor fan and 65 W heat sink assembly 47 Processor 48 Removing the processor 48 Installing the processor 49 VR heat sink 51 Removing the VR heat sink 51 Installing the VR heat sink 51 Speaker 52 Removing the speaker 52 Installing the speaker 5...

Page 5: ... Updating the BIOS in Windows 78 Updating BIOS on systems with BitLocker enabled 79 Updating your system BIOS using a USB flash drive 79 Updating the Dell BIOS in Linux and Ubuntu environments 80 Flashing the BIOS from the F12 One Time boot menu 80 4 Troubleshooting 86 Enhanced Pre Boot System Assessment ePSA diagnostics 86 Running the ePSA diagnostics 86 Diagnostics 86 Diagnostic error messages 8...

Page 6: ...y using a wrist grounding strap or by periodically touching an unpainted metal surface at the same time as touching a connector on the back of the computer CAUTION Handle components and cards with care Do not touch the components or contacts on a card Hold a card by its edges or by its metal mounting bracket Hold a component such as a processor by its edges not by its pins CAUTION When you disconn...

Page 7: ...ing two or more grounding conductors to the same electrical potential This is done through the use of a field service electrostatic discharge ESD kit When connecting a bonding wire ensure that it is connected to bare metal and never to a painted or non metal surface The wrist strap should be secure and in full contact with your skin and ensure that you remove all jewelry such as watches bracelets ...

Page 8: ... call and at a minimum test once per week A wrist strap tester is the best method for doing this test If you do not have your own wrist strap tester check with your regional office to find out if they have one To perform the test plug the wrist strap s bonding wire into the tester while it is strapped to your wrist and push the button to test A green LED is lit if the test is successful a red LED ...

Page 9: ...ad close The closer it is to your spine the less force it exerts on your back 5 Keep your back upright whether lifting or setting down the load Do not add the weight of your body to the load Avoid twisting your body and back 6 Follow the same techniques in reverse to set the load down After working inside your computer About this task After you complete any replacement procedure ensure that you co...

Page 10: ...estored when the component is replaced NOTE Some 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 Wireless card System board M2x3 1 Solid state drive System board M2x4 1 Intel Optane memory module Sy...

Page 11: ...rerequisites 1 Follow the procedure in Before working inside your computer About this task The following images indicate the location of the left side cover and provides a visual representation of the removal procedure Disassembly and reassembly 11 ...

Page 12: ...Steps 1 Push the release latch down to unlock the side cover 2 Using the tab on the left side cover slide and lift the left side cover off the chassis 12 Disassembly and reassembly ...

Page 13: ... a component remove the existing component before performing the installation procedure About this task The following images indicate the location of the left side cover and provides a visual representation of the installation procedure Disassembly and reassembly 13 ...

Page 14: ... the front cover Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the left side cover About this task The following images indicate the location of the front cover and provide a visual representation of the removal procedure Steps 1 Place the computer in an upright position 2 Gently pry and release the front cover tabs sequentially from the top 3 Move the front ...

Page 15: ...f the front cover and provide a visual representation of the installation procedure Steps 1 Place the computer in an upright position 2 Align the front cover tabs with the slots on the chassis 3 Move the front cover towards the chassis and snap it into place Next steps 1 Install the left side cover 2 Follow the procedure in After working inside your computer 2 5 inch hard drive Disassembly and rea...

Page 16: ... 5 inch hard drive assembly and provides a visual representation of the removal procedure Steps 1 Disconnect the data and power cables from the hard drive 2 Press the release tabs on the hard drive bracket and slide the hard drive assembly out of the hard drive cage NOTE Note the orientation or the SATA connector marking on the hard drive so that you can replace it correctly 16 Disassembly and rea...

Page 17: ...5 inch hard drive and provides a visual representation of the installation procedure Steps 1 NOTE Note the orientation or the SATA connector marking on the Slide the hard drive assembly into the hard drive cage until it snaps into place 2 Connect the data cable and power cable to the hard drive Next steps 1 Install the left side cover 2 Follow the procedure in After working inside your computer Di...

Page 18: ...e location of the 2 5 inch hard drive bracket and provides a visual representation of the removal procedure Steps 1 Pry the hard drive bracket to release the tabs on the assembly from the slots on the hard drive 2 Lift and remove the hard drive off the hard drive bracket Installing the 2 5 inch hard drive bracket Prerequisites If you are replacing a component remove the existing component before p...

Page 19: ...abs on the bracket with the slots on the hard drive 2 Snap the hard drive into the hard drive bracket Next steps 1 Install the 2 5 inch hard drive assembly 2 Install the left side cover 3 Follow the procedure in After working inside your computer 3 5 inch hard drive Removing the 3 5 inch hard drive Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the left side c...

Page 20: ...e data and power cables from the hard drive 3 Push the securing tab to release the hard drive bracket from the chassis 4 Remove the EMI shied from the front side of the chassis 5 Slide the hard drive assembly away from the chassis Installing the 3 5 inch hard drive Prerequisites If you are replacing a component remove the existing component before performing the installation procedure 20 Disassemb...

Page 21: ...e assembly into the hard drive cage 2 Replace the EMI shield on the chassis 3 Align the hard drive assembly with the tabs on the chassis 4 Route the power cable and data cable through the routing guides on the hard drive assembly and connect the cables to the hard drive Next steps 1 Install the left side cover 2 Follow the procedure in After working inside your computer Disassembly and reassembly ...

Page 22: ...e location of the 3 5 inch hard drive bracket and provides a visual representation of the removal procedure Steps 1 Pry the hard drive bracket to release the tabs on the assembly from the slots on the hard drive 2 Lift and remove the hard drive off the hard drive bracket Installing the 3 5 inch hard drive bracket Prerequisites If you are replacing a component remove the existing component before p...

Page 23: ...rd drive into the hard drive bracket Next steps 1 Install the 3 5 inch hard drive assembly 2 Install the left side cover 3 Follow the procedure in After working inside your computer Slim optical drive Removing the Optical Disk Drive Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the left side cover About this task The following images indicate the location of ...

Page 24: ...remove the ODD from the ODD slot Installing the Optical Disk Drive 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 Optical Disk Drive and provide a visual representation of the installation procedure 24 Disassembly and reassembly ...

Page 25: ...h the routing guides and connect the cables to the ODD Next steps 1 Install the left side cover 2 Follow the procedure in After working inside your computer Slim optical drive bracket Removing the slim ODD bracket Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the left side cover Disassembly and reassembly 25 ...

Page 26: ...he ODD bracket off the ODD Installing the slim ODD bracket 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 slim ODD bracket and provides a visual representation of the installation procedure Steps 1 Align and place the ODD bracket on the ODD slots 2 Snap the O...

Page 27: ...an Removing the chassis fan Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the left side cover About this task The following images indicate the location of the chassis fan and provides a visual representation of the removal procedure Steps 1 Lay the computer on the right side Disassembly and reassembly 27 ...

Page 28: ...e installation procedure About this task The following images indicate the location of the chassis fan and provides a visual representation of the installation procedure Steps 1 Insert the rubber grommets on the chassis 2 Align the slots on the fan with the rubber grommets on the chassis 3 Route the rubber grommets through the slots on fan and pull the rubber grommets until the fan snaps into posi...

Page 29: ... Lay the chassis on the right side 2 Use your fingertips to carefully spread apart the securing clips on each end of the memory module slot 3 Grasp the memory module near the securing clip and then gently ease the memory module out of the memory module slot NOTE Repeat step 2 to step 4 to remove any other memory modules installed in your computer NOTE Note the slot and the orientation of the memor...

Page 30: ... the tab on the memory module slot 2 Insert the memory module into the memory module connector until the memory module snaps into position and the securing clip locks in place NOTE The securing clips return to the locked position If you do not hear the click remove the memory module and reinstall it NOTE If the memory module is difficult to remove gently ease the memory module back and forth to re...

Page 31: ...s card and provides a visual representation of the removal procedure Steps 1 Lay the computer on the right side 2 Remove the single M2x3 screw that secures the wireless card to the system board 3 Slide and lift the wireless card bracket off the wireless card 4 Disconnect the antenna cables from the wireless card 5 Slide and remove the wireless card at an angle from the wireless card slot Disassemb...

Page 32: ...rovides a visual representation of the installation procedure Steps 1 Align the notch on the wireless card with the tab on the wireless card slot 2 Slide the wireless card at an angle into the wireless card slot 3 Connect the antenna cables to the wireless card The following table provides the antenna cable color scheme for the wireless card supported by your computer Table 2 Antenna cable color s...

Page 33: ...ntel Optane memory before removing Intel Optane memory module from your computer For more information about disabling the Intel Optane memory see Disabling Intel Optane memory 1 Follow the procedure in Before working inside your computer 2 Remove the left side cover About this task The following images indicate the location of the 2230 solid state drive Intel Optane and provides a visual represent...

Page 34: ...otch on the 2230 solid state drive Intel Optane memory 2 Align the notch on the 2230 solid state drive Intel Optane memory with the tab on the M 2 card slot 3 Slide the 2230 solid state drive Intel Optane memory into the M 2 card slot on the system board 4 Replace the screw M2x3 that secures the 2230 solid state drive Intel Optane memory to the system board Next steps 1 Install the left side cover...

Page 35: ... of the removal procedure Steps 1 Remove the screw M2x3 that secures the 2230 solid state drive Intel Optane memory to the system board 2 Slide and lift the solid state drive Intel Optane memory from the M 2 card slot on the system board Installing the 2280 solid state drive Intel Optane memory module Prerequisites CAUTION Solid state drives are fragile Exercise care when handling the solid state ...

Page 36: ...ps 1 Install the left side cover 2 Follow the procedure in After working inside your computer NOTE Enable the Intel Optane memory after you replace the Intel Optane memory module For more information about enabling the Intel Optane memory see Enabling Intel Optane memory Graphics card Removing the graphics card Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove th...

Page 37: ... card slot NOTE To remove the NVIDIA GeForce RTX 2080 graphics card lift and rotate the graphics card Installing the graphics card 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 graphics card and provides a visual representation of the installation procedure ...

Page 38: ...ent post connect the card in the connector and press down firmly Ensure that the card is firmly seated 3 Lift the pull tab to close the PCIe door Next steps 1 Install the left side cover 2 Follow the procedure in After working inside your computer Coin cell battery Removing the coin cell battery Prerequisites 1 Follow the procedure in Before working inside your computer 38 Disassembly and reassemb...

Page 39: ...of the removal procedure Steps 1 Lay the computer on the right side 2 Using a plastic scribe push the coin cell battery release lever on the coin cell battery socket to release the coin cell battery out of the socket 3 Remove the coin cell battery Installing the coin cell battery Prerequisites If you are replacing a component remove the existing component before performing the installation procedu...

Page 40: ...it Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the left side cover 3 Remove the processor fan and heat sink assembly 4 Remove the multiple graphics cards NOTE Note the routing of all cables as you remove them so that you can route them correctly while you are replacing the power supply unit About this task The following images indicate the location of the p...

Page 41: ...Disassembly and reassembly 41 ...

Page 42: ...power supply unit Prerequisites If you are replacing a component remove the existing component before performing the installation procedure WARNING The cables and ports on the back of the power supply unit are color coded to indicate the different power wattage Ensure that you plug in the cable to the correct port Failure to do so may result in damaging the power supply unit and or system componen...

Page 43: ...Disassembly and reassembly 43 ...

Page 44: ...assis 3 Route the power cable through the routing guides on the chassis and connect the power cables to their respective connectors on the system board Next steps 1 Install the processor fan and heat sink assembly 2 Install the multiple graphics cards 3 Install the left side cover 4 Follow the procedure in After working inside your computer 44 Disassembly and reassembly ...

Page 45: ...sink The oils in your skin can reduce the heat transfer capability of the thermal grease 2 Remove the left side cover About this task The following images indicate the location of the processor fan and 95 W heat sink assembly and provides a visual representation of the removal procedure Steps 1 Disconnect the processor fan cable from the system board 2 In the reverse sequential order 4 3 2 1 loose...

Page 46: ...ndicate the location of the processor fan and 95 W heat sink assembly and provides a visual representation of the installation procedure Steps 1 Align the screw holes on the processor fan and heat sink assembly with the screw holes on the system board 2 In the sequential order 1 2 3 4 tighten the captive screws that secure the processor fan and heat sink assembly to the system board 3 Connect the ...

Page 47: ... Remove the left side cover About this task The following images indicate the location of the processor fan and 65 W heat sink assembly and provides a visual representation of the removal procedure Steps 1 Disconnect the processor fan cable from the system board 2 Loosen the four captive screws that secure the processor fan and heat sink assembly to the system board 3 Lift the processor fan and he...

Page 48: ...he processor fan and heat sink assembly with the screw holes on the system board 2 Tighten the four captive screws that secure the processor fan and heat sink assembly to the system board 3 Connect the processor fan cable from the system board Next steps 1 Install the left side cover 2 Follow the procedure in After working inside your computer Processor Removing the processor Prerequisites 1 Follo...

Page 49: ...n push it away from the processor to release it from the securing tab 2 Extend the release lever completely and open the processor cover CAUTION When removing the processor do not touch any of the pins inside the socket or allow any objects to fall on the pins in the socket 3 Gently lift the processor from the processor socket Installing the processor Prerequisites If you are replacing a component...

Page 50: ...he same height If one or more corners of the processor are higher than the others the processor is not seated properly 2 Align the notches on the processor with the tabs on the processor socket and place the processor in the processor socket CAUTION Ensure that the processor cover notch is positioned underneath the alignment post 3 When the processor is fully seated in the socket pivot the release...

Page 51: ... 2 Remove the left side cover About this task The following images indicate the location of the VR heat sink and provides a visual representation of the removal procedure Steps 1 Loosen the two captive screws that secure the VR heat sink to the system board 2 Lift the VR heat sink off the system board Installing the VR heat sink Prerequisites If you are replacing a component remove the existing co...

Page 52: ...t side cover 2 Follow the procedure in After working inside your computer Speaker Removing the speaker Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the left side cover About this task The following images indicate the location of the speaker and provides a visual representation of the removal procedure 52 Disassembly and reassembly ...

Page 53: ... the slots on the chassis Installing the speaker 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 speaker and provides a visual representation of the installation procedure Disassembly and reassembly 53 ...

Page 54: ... Follow the procedure in After working inside your computer Power button Removing the power button Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the left side cover About this task The following images indicate the location of the power button switch and provides a visual representation of the removal procedure 54 Disassembly and reassembly ...

Page 55: ...omputer 4 Pull the power button out from the computer 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 images indicate the location of the power button switch and provides a visual representation of the installation procedure Disassembly and reassembly 55 ...

Page 56: ...all the left side cover 2 Follow the procedure in After working inside your computer Intrusion switch Removing the intrusion switch Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the left side cover About this task The following images indicate the location of the intrusion switch and provides a visual representation of the removal procedure 56 Disassembly and...

Page 57: ...he chassis Installing the intrusion switch 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 intrusion switch and provides a visual representation of the installation procedure Disassembly and reassembly 57 ...

Page 58: ...m board NOTE Replacing the system board removes any changes that you have made to the BIOS using the BIOS setup program You must make the appropriate changes again after you replace the system board NOTE Before disconnecting the cables from the system board note the location of the connectors so that you can reconnect the cables correctly after you replace the system board 2 Remove the left side c...

Page 59: ...the VR heat sink 11 Remove the processor About this task The following images indicate the location of the system board and provides a visual representation of the removal procedure Disassembly and reassembly 59 ...

Page 60: ...60 Disassembly and reassembly ...

Page 61: ...Disassembly and reassembly 61 ...

Page 62: ... board to the chassis 6 Remove the screw M2x4 that secures the system board to the chassis 7 Lift the system board at an angle and remove the system board off the chassis Installing the system board 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 system board ...

Page 63: ...Disassembly and reassembly 63 ...

Page 64: ...64 Disassembly and reassembly ...

Page 65: ...Disassembly and reassembly 65 ...

Page 66: ...e processor 2 Install the VR heat sink 3 Install the processor fan and heat sink assembly 4 Install the coin cell battery 5 Install the graphics card 6 Install the solid state drive Intel Optane memory module 7 Install the wireless card 8 Install the memory modules 9 Install the front cover 10 Install the left side cover 11 Follow the procedure in After working inside your computer NOTE Your compu...

Page 67: ... setup password Updating the BIOS in Windows Entering BIOS setup program About this task Turn on or restart your computer and press F2 immediately 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 listed on the boot menu depend on the boot...

Page 68: ...diagnostics screen The boot sequence screen also displays the option to access the System Setup screen System setup options NOTE Depending on the tabletcomputerlaptop and its installed devices the items listed in this section may or may not appear General options Table 3 General Option Description System Information Displays the following information System Information Displays BIOS Version Servic...

Page 69: ...n Table 4 System Configuration Option Description Integrated NIC Allows you to control the on board LAN controller The option Enable UEFI Network Stack is not selected by default The options are Disabled Enabled Enabled w PXE The Enabled w PXE option is enabled by default NOTE Depending on the computer and its installed devices the items that are listed in this section may or may not be display Se...

Page 70: ... to charge the external devices such as mobile phones music player The Enable USB PowerShare option is disabled by default Audio Allows you to enable or disable the integrated audio controller The option Enable Audio is enabled by default Enable Microphone enabled by default Enable Internal Speaker enabled by default Dust Filter Maintenance Allows you to enable or disable BIOS messages for maintai...

Page 71: ...em and internal hard drive passwords when powered on from the off state a cold boot Also the system prompts for passwords on any module bay HDDs that may be present Password Change This option lets you determine whether changes to the System and Hard Disk passwords are permitted when an administrator password is set Allow Non Admin Password Changes This option is enabled by default UEFI Capsule Fi...

Page 72: ...nable Allows you to enable or disable Secure Boot feature Secure Boot Enable This option is not selected by default Secure Boot Mode Allows you to modify the behavior of Secure Boot to allow evaluation or enforcement of UEFI driver signatures Deployed Mode default Audit Mode Expert key Management Allows you to manipulate the security key databases only if the system is in Custom Mode The Enable Cu...

Page 73: ... Support This field specifies whether the process has one or all cores enabled The performance of some applications improves with the additional cores All Default 1 2 3 Intel SpeedStep Allows you to enable or disable the Intel SpeedStep mode of processor Enable Intel SpeedStep This option is set by default C States Control Allows you to enable or disable the additional processor sleep states C sta...

Page 74: ... works when the computer is connected to AC power supply Disabled Does not enables the system to power on by special LAN signals when it receives a wake up signal from the LAN or wireless LAN LAN or WLAN Allows the system to be powered on by special LAN or wireless LAN signals LAN Only Allows the system to be powered on by special LAN signals LAN with PXE Boot A wakeup packet sent to the system in...

Page 75: ... you to enable or disable Intel AMT capability The options are Disabled Enabled enabled by default Restrict MEBx Access USB provision This option is disabled by default MEBx Hotkey This option is enabled by default Virtualization support Table 13 Virtualization Support Option Description Virtualization This option specifies whether a Virtual Machine Monitor VMM can use the additional hardware capa...

Page 76: ...ion enables you to securely erase data from all the internal storage devices The process adheres to SerialATA Security Erase and eMMC JEDEC Sanitize specifications The option Wipe on Next Boot is disabled by default Bios Recovery BIOS Recovery from Hard Drive This option is set by default Allows you to recover the corrupted BIOS from a recovery file on the hard drive or an external USB drive BIOS ...

Page 77: ...ystem setup press F2 immediately after a power on or re boot Steps 1 In the System BIOS or System Setup screen select Security and press Enter The Security screen is displayed 2 Select System Admin Password and create a password in the Enter the new password field Use the following guidelines to assign the system password A password can have up to 32 characters The password can contain the numbers...

Page 78: ...learing CMOS settings will reset the BIOS settings on your computer Steps 1 Remove the left side cover 2 Remove the graphics card 3 Remove the jumper plug from the password jumper pins PSWD and connect it to the CMOS jumper pins 4 Wait for 5 seconds and then replace the jumper plug to its original location 5 Install the graphics card 6 Install the left side cover Clearing BIOS System Setup and Sys...

Page 79: ...ended before updating 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 https www de...

Page 80: ... the BIOS supports this BIOS update option NOTE Only systems with BIOS Flash Update option in the F12 One Time Boot Menu can use this function Updating from the One Time Boot Menu To update your BIOS from the F12 One Time boot menu you will need USB key formatted to the FAT32 file system key does not have to be bootable BIOS executable file that you downloaded from the Dell Support website and cop...

Page 81: ...3 The Bios Flash Update dialog box menu is opened Click BIOS Update file browse button to select the BIOS file System setup 81 ...

Page 82: ...4 Select the BIOS executable file and then press OK Switch to correct catalogue of your external USB device by File system if you do not find the BIOS executable file 82 System setup ...

Page 83: ...5 Click Begin Flash Update and then a warning message is displayed System setup 83 ...

Page 84: ...6 Click Yes The systems restarts automatically and starts BIOS Flash 84 System setup ...

Page 85: ...7 Once complete the system will reboot and the BIOS update process is completed System setup 85 ...

Page 86: ... Running the ePSA diagnostics Steps 1 Turn on your computer 2 As the computer boots press the F12 key as the Dell logo appears 3 On the boot menu screen select the Diagnostics option 4 Click the arrow at the bottom left corner Diagnostics front page is displayed 5 Click the arrow in the lower right corner to go to the page listing The items detected are listed 6 To run a diagnostic test on a speci...

Page 87: ...cluding the power supply Only the 5VSB rail on the power supply is working correctly Off Steady S0 no PWRGD_PS Code fetch 1 This indicates that the host BIOS has started to execute and the LED register is now writable Table 20 Amber LED blinking failures Amber LED state White LED state System state Notes 2 1 Bad MBD Bad MBD Rows A G H and J from table 12 4 of SIO Spec Pre Post indicators 40 2 2 Ba...

Page 88: ...tate 10 BIOS Post code Old LED pattern 1110 Other pre post activity routine subsequent to video init Diagnostic error messages Table 22 Diagnostic error messages Error messages Description AUXILIARY DEVICE FAILURE The touchpad or external mouse may be faulty For an external mouse check the cable connection Enable the Pointing Device option in the System Setup program BAD COMMAND OR FILE NAME Ensur...

Page 89: ...m 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 FAILURE The hard drive does not respond to commands from the computer Shut down the computer remove the hard drive and boot the computer from an optical drive Then shut down the computer reinstal...

Page 90: ...nd partitioned as a boot device NO BOOT SECTOR ON HARD DRIVE The operating system may be corrupted 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 SYST...

Page 91: ...d No boot device available No bootable partition on hard disk drive the hard disk drive cable is loose or no bootable device exists If the hard drive is your boot device ensure that the cables are connected and that the drive is installed properly and partitioned as a boot device Enter system setup and ensure that the boot sequence information is correct No timer tick interrupt A chip on the syste...

Page 92: ...without uninstalling the driver NOTE Disabling Intel Optane memory is required before removing the SATA storage device accelerated by the Intel Optane memory module from the computer Steps 1 On the taskbar click the search box and then type Intel Rapid Storage Technology 2 Click Intel Rapid Storage Technology The Intel Rapid Storage Technology window is displayed 3 On the Intel Optane memory tab c...

Page 93: ...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 93 ...

Page 94: ... 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...

Search results

Summary of Contents for D28M

Reviews:

Related manuals for D28M

Brands by name

Popular brands

Dell D28M, Service Manual

Search results

Summary of Contents for D28M

Reviews:

Related manuals for D28M

Brands by name

Popular brands