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Dell Vostro 3681, Service Manual

The Dell Vostro 3681 is a powerful and efficient desktop computer designed for business professionals. With its compact design and advanced features, it offers seamless performance. To get started, simply visit our website and download the free Setup And Specifications manual to ensure a hassle-free setup and optimal usage experience.

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Installing the side cover

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 side cover and provide a visual representation of the installation procedure:

16

Disassembly and reassembly

Summary of Contents for Vostro 3681

Page 1: ...Vostro 3681 Service Manual 1 Regulatory Model D15S Regulatory Type D15S002 May 2020 Rev A00 ...

Page 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 ...

Page 3: ...Bezel 17 Removing the front bezel 17 Installing the front bezel 18 3 5 in Hard disk drive 19 Removing the 3 5 inch hard drive 19 Installing the 3 5 inch hard drive 19 HDD ODD Bracket 20 Removing the HDD ODD bracket 20 Installing the HDD ODD bracket 22 Optical drive 24 Removing the Optical Disk Drive 24 Installing the Optical Disk Drive 26 Memory module 27 Removing the memory modules 27 Installing ...

Page 4: ...0 Installing the power supply unit 42 Heatsink assembly 45 Removing the heatsink assembly 45 Installing the heatsink assembly 46 Processor 47 Removing the processor 47 Installing the processor 49 System board 50 Removing the system board 50 Installing the system board 53 4 Troubleshooting 57 Real Time Clock RTC Reset 57 System diagnostic lights 57 Diagnostic error messages 58 System error messages...

Page 5: ... discharge ground yourself by 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 p...

Page 6: ...l jewelry such as watches bracelets or rings prior to bonding yourself and the equipment Electrostatic discharge ESD protection ESD is a major concern when you handle electronic components especially sensitive components such as expansion cards processors memory DIMMs and system boards Very slight charges can damage circuits in ways that may not be obvious such as intermittent problems or a shorte...

Page 7: ...s successful a red LED is lit and an alarm sounds if the test fails Insulator Elements It is critical to keep ESD sensitive devices such as plastic heat sink casings away from internal parts that are insulators and often highly charged Working Environment Before deploying the ESD Field Service kit assess the situation at the customer location For example deploying the kit for a server environment ...

Page 8: ... 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 connect any external devices cards and cables before turning on your computer Steps 1 Connect any telephone or network cables to your computer CAUTION T...

Page 9: ... device to go into standby without needing to refresh its memory Deep power down mode is expected to reduce standby power consumption by 40 to 50 percent DDR4 Details There are subtle differences between DDR3 and DDR4 memory modules as listed below Key notch difference The key notch on a DDR4 module is in a different location from the key notch on a DDR3 module Both notches are on the insertion ed...

Page 10: ...mputing hardware and ever greater bandwidth demands The USB 3 1 Gen 2 finally has the answer to the consumers demands with a theoretically 10 times faster than its predecessor In a nutshell USB 3 2 Gen 1 features are as follows Higher transfer rates up to 5 Gbps Increased maximum bus power and increased device current draw to better accommodate power hungry devices New power management features Fu...

Page 11: ...xperience Where USB video was barely tolerable previously both from a maximum resolution latency and video compression perspective it s easy to imagine that with 5 10 times the bandwidth available USB video solutions should work that much better Single link DVI requires almost 2 Gbps throughput Where 480Mbps was limiting 5Gbps is more than promising With its promised 4 8Gbps speed the standard wil...

Page 12: ...s between display and source devices enabling a TV to optimize picture settings based on content type Additional Color Spaces Adds support for additional color models used in digital photography and computer graphics 4K Support Enables video resolutions far beyond 1080p supporting next generation displays that will rival the Digital Cinema systems used in many commercial movie theaters HDMI Micro ...

Page 13: ...ver Phillips 1 screwdriver Small plastic scribe Hex screwdriver Screw size list Table 2 Screw size list Component M2x3 M2X4 6 32X1 4 Hard drive 1 HDD ODD bracket 1 Optical drive 1 WLAN 1 SSD card 1 Power supply unit PSU 3 IO module 6 Internal antenna Card reader 2 System board 1 8 Front IO bracket 1 3 Disassembly and reassembly 13 ...

Page 14: ...r switch connector PWR_SW 6 SD card reader connector 7 ATX Power connector ATX_SYS 8 M 2 2230 connector for WLAN card 9 SATA 3 0 data connector SATA0 10 SATA 3 0 data connector SATA3 11 SATA 3 0 power connector SATA_PWR 12 PCIe expansion slots SLOT1 PCIe x1 SLOT2 PCIe x16 13 Coin cell battery 14 CPU socket Side cover Removing the side cover Prerequisites 1 Follow the procedure in Before working in...

Page 15: ... location of the side cover and provide a visual representation of the removal procedure Steps 1 Loosen the two captive screws and slide the side cover to release it from the chassis 2 Lift the side cover off the chassis Disassembly and reassembly 15 ...

Page 16: ...g a component remove the existing component before performing the installation procedure About this task The following images indicate the location of the side cover and provide a visual representation of the installation procedure 16 Disassembly and reassembly ...

Page 17: ...ur computer Bezel Removing the front bezel Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the side cover 3 Place the computer in an upright position About this task The following images indicate the location of the front bezel and provide a visual representation of the removal procedure Steps 1 Gently pry and release the front bezel tabs sequentially from the ...

Page 18: ...this task The following images indicate the location of the front bezel and provide a visual representation of the installation procedure Steps 1 Align the tabs on the bezel with the slots on the chassis 2 Rotate the front cover towards the chassis and snap it into place Next steps 1 Install the side cover 2 Follow the procedure in After working inside your computer 18 Disassembly and reassembly ...

Page 19: ...5 inch hard drive and provides a visual representation of the removal procedure Steps 1 Disconnect the data and power SATA cables from the hard drive and remove the two 6 32 screws 2 Lift and remove the 3 5 inch hard drive from the bracket Installing the 3 5 inch hard drive Prerequisites If you are replacing a component remove the existing component before performing the installation procedure Dis...

Page 20: ... 32 screws securing the 3 5 in hard drive to the bracket Next steps 1 Install the side cover 2 Follow the procedure in After working inside your computer HDD ODD Bracket Removing the HDD ODD bracket Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the side cover 3 Remove the 3 5 in HDD About this task The following image indicates the location of the HDD ODD bra...

Page 21: ...Disassembly and reassembly 21 ...

Page 22: ...nect the SATA power and data connectors from the ODD 6 Lift and remove the ODD bracket from the chassis Installing the HDD 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 HDD ODD bracket and provides a visual representation of the installation proc...

Page 23: ...Disassembly and reassembly 23 ...

Page 24: ...that on the chassis 4 Replace the single 6 32 screw securing the ODD to the chassis 5 Tuck the power SATA cables along the tabs of the ODD bracket Next steps 1 Install the 3 5 in HDD 2 Install the side cover 3 Follow the procedure in After working inside your computer Optical drive Removing the Optical Disk Drive Prerequisites 1 Follow the procedure in Before working inside your computer 24 Disass...

Page 25: ...ut this task The following images indicate the location of the ODD and provides a visual representation of the removal procedure Steps 1 Remove the single M2x3 screw securing the optical drive to the bracket 2 Remove the optical drive from the bracket Disassembly and reassembly 25 ...

Page 26: ...e 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 Steps 1 Insert the optical drive into the ODD bracket 2 Replace the single M2x3 screw securing the optical drive to the bracket 26 Disassembly and reassembly ...

Page 27: ...ion of the removal procedure Steps 1 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 s...

Page 28: ...n 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 remove it fr...

Page 29: ...owing images indicate the location of the graphics card and provides a visual representation of the removal procedure Steps 1 Lift the pull tab to open the PCIe door 2 Push and hold the securing tab on the graphics card slot and lift the graphics card from the graphics card slot 3 Lift and remove the graphics card from the system board Disassembly and reassembly 29 ...

Page 30: ...ovides a visual representation of the installation procedure Steps 1 Align the graphics card with the PCI Express card connector on the system board 2 Using the alignment 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 side cover 2 Follow the procedure in After working inside your...

Page 31: ...in cell battery and provides a visual representation of the removal procedure Steps 1 Lay the computer on the right side 2 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 perfo...

Page 32: ...ng inside your computer M 2 2230 Solid state drive Removing the 2230 solid state drive Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the side cover 3 Remove the HDD ODD bracket About this task The following images indicate the location of the 2230 solid state drive and provides a visual representation of the removal procedure 32 Disassembly and reassembly ...

Page 33: ...ate drive Prerequisites CAUTION Solid state drives are fragile Exercise care when handling the solid state drive 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 solid state drive and provides a visual representation of the installation procedure Disassembly and reassembly 3...

Page 34: ...d Next steps 1 Install the HDD ODD bracket 2 Install the side cover 3 Follow the procedure in After working inside your computer M 2 2280 Solid state drive Removing the 2280 solid state drive Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the side cover 3 Remove the HDD ODD bracket About this task The following images indicate the location of the 2280 solid st...

Page 35: ...tate drive Prerequisites CAUTION Solid state drives are fragile Exercise care when handling the solid state drive 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 2280 solid state drive and provides a visual representation of the installation procedure Disassembly and reasse...

Page 36: ...ve to the system board Next steps 1 Install the HDD ODD bracket 2 Install the side cover 3 Follow the procedure in After working inside your computer WLAN Card Removing the WLAN card Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the side cover 3 Remove the ODD bracket About this task The following images indicate the location of the wireless card and provides...

Page 37: ...card at an angle from the wireless card slot Installing the WLAN card Prerequisites If you are replacing a component remove the existing component before performing the installation procedure NOTE To avoid damage to the wireless card do not place any cables under it About this task The following images indicate the location of the wireless card and provide a visual representation of the installati...

Page 38: ...gle Black 2 Slide and place the wireless card bracket on the antennae connectors on the WLAN card 3 Align the notch on the wireless card with the tab on the wireless card slot 4 Slide the wireless card at an angle into the wireless card slot of the system board 5 Replace the single M2x3 screw that secures the wireless card to the system board Next steps 1 Install the ODD bracket 2 Install the side...

Page 39: ...rovide a visual representation of the removal procedure Steps 1 Unroute the PSU power cable from over the SD card reader 2 Remove the two M3x5 screws securing the SD card reader to the chassis 3 Lift and remove the SD card reader from the system board Installing the media card reader Prerequisites About this task The following images indicate the location of the media card reader and provide a vis...

Page 40: ...he procedure in After working inside your computer Power supply unit Removing the power supply unit Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the side cover 3 Remove the front bezel 4 Remove the HDD ODD bracket 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 th...

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: ...44 Disassembly and reassembly ...

Page 45: ...computer Heatsink assembly Removing the heatsink assembly Prerequisites 1 Follow the procedure in Before working inside your computer WARNING The heat sink may become hot during normal operation Allow sufficient time for the heat sink to cool before you touch it 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 h...

Page 46: ... to the system board 5 Lift the processor fan and heat sink assembly off the system board Installing the heatsink assembly Prerequisites If you are replacing a component remove the existing component before performing the installation procedure CAUTION If either the processor or the heat sink is replaced use the thermal grease that is provided in the kit to ensure that thermal conductivity is achi...

Page 47: ...the system board 3 Connect the processor fan cable to the system board 4 Replace the fan shroud on the heat sink assembly along the marked orientation and snap it into place Next steps 1 Install the side cover 2 Follow the procedure in After working inside your computer Processor Removing the processor Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the side co...

Page 48: ...sual representation of the removal procedure Steps 1 Press the release lever down and then 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...

Page 49: ...ngle that aligns with the triangle on the pin 1 corner on the processor socket When the processor is properly seated all four corners are aligned at the 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 ...

Page 50: ...es 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 side cover 3 Remove the front bezel 4 Remove the HDD ODD bracket 5 Remove the optical disk drive 6 Remove the memory modules 7 Remove the graphics card 8 Remove the s...

Page 51: ...Disassembly and reassembly 51 ...

Page 52: ...52 Disassembly and reassembly ...

Page 53: ...rd 7 Disconnect the power switch cable from the system board 8 Remove the eight 6 32 screws that secure the system board to the chassis 9 Remove the screw M2x4 that secures the system board to the chassis 10 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 pe...

Page 54: ...54 Disassembly and reassembly ...

Page 55: ...board to the chassis 5 Connect the 4 pin power supply ATEX connector to the system board 6 Connect the 6 pin power supply ATEX connector to the system board 7 Connect the front I O cable connector to the system board 8 Connect the SATA cables to the system board 9 Connect the power switch cable to the system board Next steps 1 Install the processor 2 Install the heat sink 3 Install the media card ...

Page 56: ...ter s Service Tag is stored in the system board You must enter the Service Tag in the BIOS setup program after you replace the system 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 56 Disassembly and reassembly ...

Page 57: ...o POST Blinking Amber White Failure to POST This platform relies on the Power button LED light blinking in an amber white pattern to determine a failure as listed in the following table NOTE The blinking patterns consists of two numbers representing First Group Amber blinks Second Group White blinks First Group The Power button LED light blinks Amber 1 to 9 times followed by a short pause with LED...

Page 58: ...ntact 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 AVAILABLE MEMORY One or more memory modules may be faulty or improperly seated Reinstall the memory modules or if necessary replace them DISK C FAILED INITIALIZATION The hard drive failed initialization Run the hard drive tests in Dell Di...

Page 59: ...nd boot the computer from an optical 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 INSERT BOOTABLE MEDIA The operating system is trying to boot to non bootable media such as an optical drive Insert bootable media INVALID CONFIGURATION INFORMATION PLEASE RUN SYSTEM SETUP PROGR...

Page 60: ...Reinstall the operating system If the problem persists Contact Dell OPTIONAL ROM BAD CHECKSUM The optional ROM has failed Contact Dell SECTOR NOT FOUND The operating system cannot locate a sector on the hard drive You may have a defective sector or corrupted File Allocation Table FAT on the hard drive Run the Windows error checking utility to check the file structure on the hard drive See Windows ...

Page 61: ...cted 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 system board might be malfunctioning or motherboard failure NOTICE Hard Drive SELF MONITORING SYSTEM has reported that a parameter has exceeded its normal operating range Dell recommends that you back up you...

Page 62: ...ort 3 Click Product support enter the Service Tag of your computer and then click Submit NOTE If you do not have the Service Tag use the auto detect feature or manually browse for your computer model 4 Click Drivers downloads Find it myself 5 Select the operating system installed on your computer 6 Scroll down the page and expand BIOS 7 Click Download to download the latest version of the BIOS for...

Page 63: ...https www dell com support home app knowledgebase 2 Type the subject or keyword in the Search box 3 Click Search to retrieve the related articles Learn and get more 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 Dell provides several online and telephone...

Page 64: ...er of the page 3 For customized support a Enter your system Service Tag in the Enter your Service Tag field b Click submit The support page that lists the various support categories is displayed 4 For general support a Select your product category b Select your product segment c Select your product The support page that lists the various support categories is displayed 5 For contact details of Del...

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