Dell OptiPlex 5070 Tower Service Manual

Dell OptiPlex 5070 Tower Manual

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  • Dell OptiPlex 5070 Tower | Service Manual - Page 1
    OptiPlex 5070 Tower Service Manual Regulatory Model: D18M Regulatory Type: D18M005 October 2021 Rev. A02
  • Dell OptiPlex 5070 Tower | Service Manual - Page 2
    data and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. © 2019-2021 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may
  • Dell OptiPlex 5070 Tower | Service Manual - Page 3
    Contents Chapter 1: Working on your computer 7 Safety instructions...7 Before working inside your computer...7 Safety precautions...8 Electrostatic discharge-ESD protection...8 ESD field service kit ...9 Transporting sensitive components...10 After working inside your computer...10 Chapter 2:
  • Dell OptiPlex 5070 Tower | Service Manual - Page 4
    card...42 Optional VGA module...43 Removing optional VGA module...43 Installing optional VGA module...44 Power supply unit...45 Removing power supply unit or PSU...45 Installing power supply unit or PSU...47 Intrusion switch...49 Removing intrusion switch...49 Installing intrusion switch...50
  • Dell OptiPlex 5070 Tower | Service Manual - Page 5
    memory module...88 Expansion card...89 Removing PCIe expansion card...89 Installing PCIe expansion card...90 Power supply unit...91 Removing power supply unit or PSU...91 Installing power supply unit or PSU...93 Intrusion switch...95 Removing intrusion switch...95 Installing intrusion switch...96
  • Dell OptiPlex 5070 Tower | Service Manual - Page 6
    Removing system board...115 Installing the system board...118 Chapter 5: Troubleshooting...121 Enhanced Pre-Boot System Assessment - ePSA diagnostics 121 Running the ePSA Diagnostics...121 Diagnostics...122 Power-Supply Unit Built-in Self-Test ...123 Diagnostic error messages...124 System error
  • Dell OptiPlex 5070 Tower | Service Manual - Page 7
    troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions to the power source. NOTE
  • Dell OptiPlex 5070 Tower | Service Manual - Page 8
    instructions power Dell products with standby power must be unplugged before you open the case. Systems that incorporate standby power are essentially powered while turned off. The internal power enables the system to be remotely turned of damage to recognize and troubleshoot is the intermittent (also
  • Dell OptiPlex 5070 Tower | Service Manual - Page 9
    for safe transport. ESD protection summary It is recommended that all field service technicians use the traditional wired ESD grounding wrist strap and protective anti-static mat at all times when servicing Dell products. In addition, it is critical that technicians keep sensitive parts separate
  • Dell OptiPlex 5070 Tower | Service Manual - Page 10
    replacement parts or parts to be returned to Dell, it is critical to place these parts stable base, and point your toes out. 2. Tighten stomach muscles. Abdominal muscles support your spine when you lift, offsetting the force of the load. 3. Lift Turn on your computer. 10 Working on your computer
  • Dell OptiPlex 5070 Tower | Service Manual - Page 11
    the wrong type of memory into the system. DDR4 needs 20 percent less or just 1.2 volts, compared to DDR3 which requires 1.5 volts of electrical power to operate. DDR4 also supports a new, deep power-down mode that allows the host device to go into standby without needing to refresh its memory. Deep
  • Dell OptiPlex 5070 Tower | Service Manual - Page 12
    failure code. If all memory fails, the LCD does not turn on. Troubleshoot for possible memory failure by trying known good memory modules in ● Increased maximum bus power and increased device current draw to better accommodate power-hungry devices ● New power management features 12 Technology
  • Dell OptiPlex 5070 Tower | Service Manual - Page 13
    ● Full-duplex data transfers and support for new transfer types ● Backward USB 2.0 compatibility ● New connectors the existing USB 2.0 bus (refer to the picture below). ● USB 2.0 previously had four wires (power, ground, and a pair for differential data); USB 3.0/USB 3.1 Gen 1 adds four more for two
  • Dell OptiPlex 5070 Tower | Service Manual - Page 14
    you used it as an external display - all via the one little USB Type-C connection. To use this, the device and the cable have to support USB Power Delivery. Just having a USB Type-C connection doesn't necessarily mean they do. USB Type-C and USB 3.1 USB 3.1 is a new USB standard. USB 3's theoretical
  • Dell OptiPlex 5070 Tower | Service Manual - Page 15
    functions only as a storage accelerator. It neither replaces nor adds to the memory (RAM) installed on your computer. NOTE: Intel Optane memory is supported on computers that meet the following requirements: ● 7th Generation or higher Intel Core i3/i5/i7 processor ● Windows 10 64-bit version 1607 or
  • Dell OptiPlex 5070 Tower | Service Manual - Page 16
    Table 2. Intel Optane memory specifications Feature Interface Connector Configurations supported Capacity Specifications PCIe 3x2 NVMe 1.1 M.2 card slot (2230/2280) ● 7th Generation or higher Intel Core i3/i5/i7 processor ● Windows 10 64-bit version 1607
  • Dell OptiPlex 5070 Tower | Service Manual - Page 17
    2. 3.5-inch Hard drive assembly 3. Optical drive 4. Heatsink assembly 5. Processor 6. Memory module 7. M.2 PCIe SSD 8. Power button 9. System board 10. Front panel door 11. Bezel 12. 2.5-inch Hard drive assembly 13. Speaker 14. System fan 15. Power supply unit Major components of your system 17
  • Dell OptiPlex 5070 Tower | Service Manual - Page 18
    NOTE: Dell provides a list of components and their part numbers for the original system configuration purchased. These parts are available according to warranty coverages purchased by the customer. Contact your Dell sales representative for purchase options. 18 Major components of your system
  • Dell OptiPlex 5070 Tower | Service Manual - Page 19
    inch hard drive • 2.5-inch hard drive assembly • Optical drive • M.2 SSD • SD card reader • Memory module • Expansion card • Power supply unit • Intrusion switch • Power button • Speaker • Coin cell battery • Heat sink fan • Heatsink assembly • Processor • System fan • Optional VGA module • System
  • Dell OptiPlex 5070 Tower | Service Manual - Page 20
    Side cover Removing side cover 1. Follow the procedure in Before working inside your computer. 2. To remove the cover: a. Slide the release latch to release the cover from the system [1]. b. Slide the cover towards the back of the system and lift it from the system [2]. Installing side cover 1. To
  • Dell OptiPlex 5070 Tower | Service Manual - Page 21
    2. Follow the procedure in After working inside your computer. Bezel Removing front bezel 1. Follow the procedure in Before working inside your computer. 2. Remove the Side cover. 3. To remove the front bezel: a. Pry the retention tabs to release the front bezel from the system. b. Remove the front
  • Dell OptiPlex 5070 Tower | Service Manual - Page 22
    Installing front bezel 1. To install the front bezel: a. Position the bezel to align the tab holders with the slots on the system chassis. b. Press the bezel until the tabs click into place. 22 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 23
    2. Install the Side cover. 3. Follow the procedure in After working inside your computer. Front panel door Opening front panel door 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel CAUTION: The front panel door opens only to a limited extent
  • Dell OptiPlex 5070 Tower | Service Manual - Page 24
    Closing front panel door 1. Turn the front panel door to close it. 24 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 25
    procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. To remove the hard drive assembly: a. Disconnect the SATA cable and the power cable from the connectors on the hard drive. Removing and installing components 25
  • Dell OptiPlex 5070 Tower | Service Manual - Page 26
    b. Remove the HDD filler bracket from the system [1]. c. Press the blue tab [2] and pull the hard drive assembly out of the system [3]. Removing 3.5-inch hard drive from the hard drive bracket 1. Follow the procedure in Before working inside your computer. 2. Remove the: 26 Removing and
  • Dell OptiPlex 5070 Tower | Service Manual - Page 27
    a. Side cover b. Front bezel c. 3.5-inch HDD assembly 3. To remove the hard drive : a. Pull one side of the hard drive bracket to disengage the pins on the bracket from the slots on the hard drive [1]. b. Lift the hard drive out of the hard drive bracket [2]. Installing the 3.5-inch hard drive into
  • Dell OptiPlex 5070 Tower | Service Manual - Page 28
    3. Connect the SATA cable and the power cable to the connectors on the hard drive. 4. Install the: a. Front bezel b. Side cover 5. Follow the procedure in After working inside your computer. 28 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 29
    . 2. Remove the: a. Side cover b. Front bezel 3. Open the front panel door. 4. To remove the hard drive assembly: a. Disconnect the hard drive data and power cables from the connectors on the 2.5-inch hard drive [1]. b. Press the blue tabs of the assembly on both sides [2] and pull the hard drive
  • Dell OptiPlex 5070 Tower | Service Manual - Page 30
    the hard drive: a. Insert the hard drive assembly into the slot on the system until it clicks into place [1] . b. Connect the hard drive data and power cables to the connectors on the 2.5-inch hard drive [2] . 30 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 31
    . 2. Remove the: a. Side cover b. Front bezel 3. Open the front panel door. 4. To remove the optical drive assembly: a. Disconnect the optical drive data cable and power cable from the connectors on the optical drive [1]. NOTE: You may need to unroute the cables from the tabs under the drive cage to
  • Dell OptiPlex 5070 Tower | Service Manual - Page 32
    c. Press the blue release tab [1] and slide the optical drive out of the system [2]. 32 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 33
    Installing optical drive 1. To install the optical drive: a. Close the front panel door. b. Insert the optical drive into the optical drive bay until it clicks into place. Removing and installing components 33
  • Dell OptiPlex 5070 Tower | Service Manual - Page 34
    c. Open the front panel door [1]. d. Route the cables under the drive cage. e. Connect the optical drive data cable and power cable to the connectors on the optical drive [2]. 34 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 35
    2. Install the: a. Front bezel b. Side cover 3. Follow the procedure in After working inside your computer. M.2 PCIe SSD Removing M.2 SSD 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open the front panel door. 4. To remove the M.2 SSD
  • Dell OptiPlex 5070 Tower | Service Manual - Page 36
    Installing M.2 SSD 1. Insert the M.2 SSD to the connector on the system board [1]. 2. Replace the single screw to secure the SSD to the system board [2]. 36 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 37
    3. Close the front panel door. 4. Install the: a. Front bezel b. Side cover 5. Follow the procedure in After working inside your computer. SD card reader Removing SD card reader 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open the
  • Dell OptiPlex 5070 Tower | Service Manual - Page 38
    Installing SD card reader 1. To install the SD card reader: a. Insert the SD card reader into the slot on the front panel door [1]. b. Replace the screw to secure the SD card reader to the front panel door [2]. c. Connect the SD card reader cable to the connector on the system board [3]. 38
  • Dell OptiPlex 5070 Tower | Service Manual - Page 39
    2. Close the front panel door. 3. Install the: a. Front bezel b. Side cover 4. Follow the procedure in After working inside your computer. Memory module Removing memory module 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open the
  • Dell OptiPlex 5070 Tower | Service Manual - Page 40
    Installing memory module 1. To install the memory module: a. Align the notch on the memory module with the tab on the memory module connector. b. Insert the memory module into the memory module socket [1]. c. Press the memory module until the memory module retention tabs click into place [2]. 40
  • Dell OptiPlex 5070 Tower | Service Manual - Page 41
    2. Close the front panel door. 3. Install the: a. Front bezel b. Side cover 4. Follow the procedure in After working inside your computer. Expansion card Removing PCIe expansion card 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open
  • Dell OptiPlex 5070 Tower | Service Manual - Page 42
    5. Repeat the steps to remove any additional PCIe expansion card. Installing PCIe expansion card 1. To install the PCIe expansion card: a. NOTE: To remove the PCIe brackets, push the bracket upwards from the inside of your computer to release it and then lift the bracket away from your computer
  • Dell OptiPlex 5070 Tower | Service Manual - Page 43
    d. Pull the release latch forward to close [2]. e. Repeat the steps to install any additional PCIe expansion card. 2. Close the front panel door. 3. Install the: a. Front bezel b. Side cover 4. Follow the procedure in After working inside your computer. Optional VGA module Removing optional VGA
  • Dell OptiPlex 5070 Tower | Service Manual - Page 44
    b. Disconnect the VGA cable from the connector on the system board [1]. c. Remove the VGA module from the system [2]. Installing optional VGA module 1. To remove the metal bracket as shown below, insert a flathead screwdriver in the hole of the bracket [1], push the bracket to release the bracket
  • Dell OptiPlex 5070 Tower | Service Manual - Page 45
    the front panel door. 6. Install the: a. Front bezel b. Side cover 7. Follow the procedure in After working inside your computer. Power supply unit Removing power supply unit or PSU 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open
  • Dell OptiPlex 5070 Tower | Service Manual - Page 46
    5. To remove the PSU: a. Remove the 3 screws that secure the PSU to the system [1]. b. Press the release tab [2]. c. Slide and lift the PSU away from the computer [3]. 46 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 47
    Installing power supply unit or PSU 1. To install the PSU: a. Insert the PSU into the PSU slot and slide it towards the back of the system until it clicks into place [1]. b. Replace the three screws to secure the PSU to the computer [2] . Removing and installing components 47
  • Dell OptiPlex 5070 Tower | Service Manual - Page 48
    c. Connect the PSU cables to the connectors on the system board [1]. d. Route the PSU cables through the retention clips [2, 3, 4, 5]. e. Connect the PSU cable to the connector on the system board [6]. 48 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 49
    2. Close the front panel door. 3. Install the: a. Front bezel b. Side cover 4. Follow the procedure in After working inside your computer. Intrusion switch Removing intrusion switch 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open
  • Dell OptiPlex 5070 Tower | Service Manual - Page 50
    Installing intrusion switch 1. Insert the intrusion switch into the slot on the system [1]. 2. Route the intrusion switch cable through the fan grommet [2]. 3. Connect the intrusion switch cable to the connector on the system board [3]. 50 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 51
    4. Close the front panel door. 5. Install the: a. Front bezel b. Side cover 6. Follow the procedure in After working inside your computer. Power button Removing power button 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open the front
  • Dell OptiPlex 5070 Tower | Service Manual - Page 52
    5. Pull the power button out from the computer. 52 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 53
    Installing power button 1. Insert the power switch into the slot from the front of the computer and press it until it clicks into place. Removing and installing components 53
  • Dell OptiPlex 5070 Tower | Service Manual - Page 54
    2. Open the front panel door [1] 3. Route the power switch cable from the power button through the retention clip [2, 3]. 4. Align the cable with the pins on the connector and connect the power button cable [4]. 54 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 55
    5. Close the front panel door. 6. Install the: a. Front bezel b. Side cover 7. Follow the procedure in After working inside your computer. Speaker Removing speaker 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open the front panel door
  • Dell OptiPlex 5070 Tower | Service Manual - Page 56
    Installing speaker 1. Insert the speaker into the slot and press it until it clicks into place [1]. 2. Connect the speaker cable to the connector on the system board [2]. 56 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 57
    3. Close the front panel door. 4. Install the: a. Front bezel b. Side cover 5. Follow the procedure in After working inside your computer. Coin cell battery Removing coin cell battery 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open
  • Dell OptiPlex 5070 Tower | Service Manual - Page 58
    NOTE: Removing the coin cell battery may reset the system board BIOS/Settings Installing the coin cell battery 1. Hold the coin cell battery with the "+" sign facing up and slide it under the securing tabs at the positive side of the connector [1]. 2. Press the battery into the connector until it
  • Dell OptiPlex 5070 Tower | Service Manual - Page 59
    3. Close the front panel door. 4. Install the: a. Front bezel b. Side cover 5. Follow the procedure in After working inside your computer. Heat sink fan Removing heat sink fan 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open the
  • Dell OptiPlex 5070 Tower | Service Manual - Page 60
    Installing heatsink fan 1. Place the fan on the heatsink assembly [1]. 2. Tighten the screws (4) to secure the fan to the heatsink assembly [2]. 3. Connect the heatsink fan assembly cable to the connector on the system board [3]. 60 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 61
    4. Close the front panel door. 5. Install the: a. Front bezel b. Side cover 6. Follow the procedure in After working inside your computer. Heat sink Removing heatsink assembly 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open the
  • Dell OptiPlex 5070 Tower | Service Manual - Page 62
    Installing heatsink assembly 1. Align the screws of the heatsink assembly with the holders on the system board and place the heatsink assembly on the processor [1]. 2. Tighten the captive screws to secure the heatsink assembly to the system board [2]. NOTE: Tighten the screws in a sequential order
  • Dell OptiPlex 5070 Tower | Service Manual - Page 63
    4. Close the front panel door. 5. Install the: a. Front bezel b. Side cover 6. Follow the procedure in After working inside your computer. Processor Removing processor 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open the front panel
  • Dell OptiPlex 5070 Tower | Service Manual - Page 64
    CAUTION: Do not touch the processor socket pins, they are fragile and can be permanently damaged. Be careful not to bend the pins in the processor socket when removing the processor out of the socket. Installing processor 1. Place the processor on the socket such that the slots on the processor
  • Dell OptiPlex 5070 Tower | Service Manual - Page 65
    4. Install the heatsink assembly. 5. Close the front panel door. 6. Install the: a. Front bezel b. Side cover 7. Follow the procedure in After working inside your computer. System fan Removing system fan 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b.
  • Dell OptiPlex 5070 Tower | Service Manual - Page 66
    c. Disconnect the system fan cable from the connector on the system board [1]. d. Stretch the grommets securing the fan to the computer to ease the removal of the fan [2]. e. Slide the system fan out of the computer [3]. 66 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 67
    Installing system fan 1. Insert the grommets into the slots on the back of the computer. 2. Hold the system fan with the cable facing the bottom of the computer. 3. Align the grooves of the system fan with the grommets on the chassis wall. 4. Pass the grommets through the corresponding grooves on
  • Dell OptiPlex 5070 Tower | Service Manual - Page 68
    7. Route the intrusion switch cable through the fan grommet [2]. 8. Insert the intrusion switch cable into the system board [1]. 68 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 69
    9. Close the front panel door. 10. Install the: a. Front bezel b. Side cover 11. Follow the procedure in After working inside your computer. System board Removing system board 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open the
  • Dell OptiPlex 5070 Tower | Service Manual - Page 70
    switch 6. Disconnect the following cables from the system board: a. CPU power [1] b. Hard drive data and optical drive data [2] c. Speaker [3] d. System power [4] e. SATA [5] 7. To remove the system board: a. Remove the screws that secure the system board to the computer [1]. 70 Removing and
  • Dell OptiPlex 5070 Tower | Service Manual - Page 71
    b. Slide and lift the system board away from the computer [1, 2]. Removing and installing components 71
  • Dell OptiPlex 5070 Tower | Service Manual - Page 72
    the printed image on the front panel door for the maximum permissible level. 3. Pull the front panel door to open it. Closing front panel door 1. Turn the front panel door to close it. 72 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 73
    procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. To remove the hard drive assembly: a. Disconnect the SATA cable and the power cable from the connectors on the hard drive. Removing and installing components 73
  • Dell OptiPlex 5070 Tower | Service Manual - Page 74
    b. Remove the HDD filler bracket from the system [1]. c. Press the blue tab [2] and pull the hard drive assembly out of the system [3]. Installing 3.5-inch hard drive assembly 1. Insert the hard drive assembly into the slot on the system until it clicks into place [1]. 2. Replace the HDD filler
  • Dell OptiPlex 5070 Tower | Service Manual - Page 75
    3. Connect the SATA cable and the power cable to the connectors on the hard drive. 4. Install the: a. Front bezel b. Side cover 5. Follow the procedure in After working inside your computer. Removing and installing components 75
  • Dell OptiPlex 5070 Tower | Service Manual - Page 76
    3.5-inch hard drive Removing 3.5-inch hard drive from the hard drive bracket 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel c. 3.5-inch HDD assembly 3. To remove the hard drive : a. Pull one side of the hard drive bracket to disengage the
  • Dell OptiPlex 5070 Tower | Service Manual - Page 77
    . 2. Remove the: a. Side cover b. Front bezel 3. Open the front panel door. 4. To remove the hard drive assembly: a. Disconnect the hard drive data and power cables from the connectors on the 2.5-inch hard drive [1]. b. Press the blue tabs of the assembly on both sides [2] and pull the hard drive
  • Dell OptiPlex 5070 Tower | Service Manual - Page 78
    2. Close the front panel door. 3. Install the: a. Front bezel b. Side cover 4. Follow the procedure in After Working Inside Your Computer. 2.5-inch hard drive Removing the 2.5-inch drive from the drive bracket 1. Follow the procedure in Before Working Inside Your Computer. 2. Remove the: a. Side
  • Dell OptiPlex 5070 Tower | Service Manual - Page 79
    . 2. Remove the: a. Side cover b. Front bezel 3. Open the front panel door. 4. To remove the optical drive assembly: a. Disconnect the optical drive data cable and power cable from the connectors on the optical drive [1]. NOTE: You may need to unroute the cables from the tabs under the drive cage to
  • Dell OptiPlex 5070 Tower | Service Manual - Page 80
    c. Press the blue release tab [1] and slide the optical drive out of the system [2]. 80 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 81
    Installing optical drive 1. To install the optical drive: a. Insert the optical drive into the optical drive bay until it clicks into place [1]. b. Open the front panel door [2]. Removing and installing components 81
  • Dell OptiPlex 5070 Tower | Service Manual - Page 82
    c. Route the cables under the drive cage. d. Connect the optical drive data cable and power cable to the connectors on the optical drive [1] . e. Close the front panel door [2]. 82 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 83
    2. Install the: a. Front bezel b. Side cover 3. Follow the procedure in After working inside your computer. M.2 SSD Removing M.2 SSD 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open the front panel door. 4. To remove the M.2 SSD: a.
  • Dell OptiPlex 5070 Tower | Service Manual - Page 84
    Installing M.2 SSD 1. Insert the M.2 SSD to the connector on the system board [1]. 2. Replace the single screw to secure the SSD to the system board [2]. 84 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 85
    3. Close the front panel door. 4. Install the: a. Front bezel b. Side cover 5. Follow the procedure in After working inside your computer. SD card reader Removing SD card reader 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open the
  • Dell OptiPlex 5070 Tower | Service Manual - Page 86
    Installing SD card reader 1. To install the SD card reader: a. Insert the SD card reader into the slot on the front panel door [1]. b. Replace the screw to secure the SD card reader to the front panel door [2]. c. Connect the SD card reader cable to the connector on the system board [3]. 86
  • Dell OptiPlex 5070 Tower | Service Manual - Page 87
    2. Close the front panel door. 3. Install the: a. Front bezel b. Side cover 4. Follow the procedure in After working inside your computer. Memory module Removing memory module 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open the
  • Dell OptiPlex 5070 Tower | Service Manual - Page 88
    Installing memory module 1. To install the memory module: a. Align the notch on the memory module with the tab on the memory module connector. b. Insert the memory module into the memory module socket [1]. c. Press the memory module until the memory module retention tabs click into place [2]. 88
  • Dell OptiPlex 5070 Tower | Service Manual - Page 89
    2. Close the front panel door. 3. Install the: a. Front bezel b. Side cover 4. Follow the procedure in After working inside your computer. Expansion card Removing PCIe expansion card 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open
  • Dell OptiPlex 5070 Tower | Service Manual - Page 90
    5. Repeat the steps to remove any additional PCIe expansion card. Installing PCIe expansion card 1. To install the PCIe expansion card: a. NOTE: To remove the PCIe brackets (2 and 3), push the bracket upwards from the inside of your computer to release it and then lift the bracket away from
  • Dell OptiPlex 5070 Tower | Service Manual - Page 91
    the front panel door. 3. Install the: a. Front bezel b. Side cover 4. Follow the procedure in After working inside your computer. Power supply unit Removing power supply unit or PSU 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open
  • Dell OptiPlex 5070 Tower | Service Manual - Page 92
    5. To remove the PSU: a. Remove the 3 screws that secure the PSU to the system [1]. b. Press the release tab [2]. c. Slide and lift the PSU away from the computer [3]. 92 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 93
    Installing power supply unit or PSU 1. To install the PSU: a. Insert the PSU into the PSU slot and slide it towards the back of the system until it clicks into place [1]. b. Replace the three screws to secure the PSU to the computer [2] . Removing and installing components 93
  • Dell OptiPlex 5070 Tower | Service Manual - Page 94
    c. Connect the PSU cables to the connectors on the system board [1]. d. Route the PSU cables through the retention clips [2, 3, 4, 5]. e. Connect the PSU cable to the connector on the system board [6]. 94 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 95
    2. Close the front panel door. 3. Install the: a. Front bezel b. Side cover 4. Follow the procedure in After working inside your computer. Intrusion switch Removing intrusion switch 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open
  • Dell OptiPlex 5070 Tower | Service Manual - Page 96
    Installing intrusion switch 1. Insert the intrusion switch into the slot on the system [1]. 2. Route the intrusion switch cable through the fan grommet [2]. 3. Connect the intrusion switch cable to the connector on the system board [3]. 96 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 97
    4. Close the front panel door. 5. Install the: a. Front bezel b. Side cover 6. Follow the procedure in After working inside your computer. Power button Removing power button 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open the front
  • Dell OptiPlex 5070 Tower | Service Manual - Page 98
    5. Pull the power button out from the computer. 98 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 99
    Installing power button 1. Insert the power switch into the slot from the front of the computer and press it until it clicks into place [1]. 2. Open the front panel door [2] Removing and installing components 99
  • Dell OptiPlex 5070 Tower | Service Manual - Page 100
    3. Route the power switch cable from the power button through the retention clip [2]. 4. Align the cable with the pins on the connector and connect the power button cable [3]. 100 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 101
    5. Close the front panel door. 6. Install the: a. Front bezel b. Side cover 7. Follow the procedure in After working inside your computer. Speaker Removing speaker 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open the front panel door
  • Dell OptiPlex 5070 Tower | Service Manual - Page 102
    Installing speaker 1. Insert the speaker into the slot and press it until it clicks into place [1]. 2. Connect the speaker cable to the connector on the system board [2]. 102 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 103
    3. Close the front panel door. 4. Install the: a. Front bezel b. Side cover 5. Follow the procedure in After working inside your computer. Coin cell battery Removing coin cell battery 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open
  • Dell OptiPlex 5070 Tower | Service Manual - Page 104
    NOTE: Removing the coin cell battery may reset the system board BIOS/Settings Installing the coin cell battery 1. Hold the coin cell battery with the "+" sign facing up and slide it under the securing tabs at the positive side of the connector [1]. 2. Press the battery into the connector until it
  • Dell OptiPlex 5070 Tower | Service Manual - Page 105
    3. Close the front panel door. 4. Install the: a. Front bezel b. Side cover 5. Follow the procedure in After working inside your computer. Heat sink fan Removing heat sink fan 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open the
  • Dell OptiPlex 5070 Tower | Service Manual - Page 106
    Installing heatsink fan 1. Place the fan on the heatsink assembly [1]. 2. Tighten the screws (4) to secure the fan to the heatsink assembly [2]. 3. Connect the heatsink fan assembly cable to the connector on the system board [3]. 106 Removing and installing components
  • Dell OptiPlex 5070 Tower | Service Manual - Page 107
    4. Close the front panel door. 5. Install the: a. Front bezel b. Side cover 6. Follow the procedure in After working inside your computer. Heatsink assembly Removing heatsink assembly 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open
  • Dell OptiPlex 5070 Tower | Service Manual - Page 108
    Installing heatsink assembly 1. Align the screws of the heatsink assembly with the holders on the system board and place the heatsink assembly on the processor [1]. 2. Tighten the captive screws to secure the heatsink assembly to the system board [2]. NOTE: Tighten the screws in a sequential order
  • Dell OptiPlex 5070 Tower | Service Manual - Page 109
    4. Close the front panel door. 5. Install the: a. Front bezel b. Side cover 6. Follow the procedure in After working inside your computer. Processor Removing processor 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b. Front bezel 3. Open the front panel
  • Dell OptiPlex 5070 Tower | Service Manual - Page 110
    CAUTION: Do not touch the processor socket pins, they are fragile and can be permanently damaged. Be careful not to bend the pins in the processor socket when removing the processor out of the socket. Installing processor 1. Place the processor on the socket such that the slots on the processor
  • Dell OptiPlex 5070 Tower | Service Manual - Page 111
    4. Install the heatsink assembly. 5. Close the front panel door. 6. Install the: a. Front bezel b. Side cover 7. Follow the procedure in After working inside your computer. System fan Removing system fan 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover b.
  • Dell OptiPlex 5070 Tower | Service Manual - Page 112
    Installing system fan 1. Insert the grommets into the slots from the back of the computer. NOTE: Install the lower two grommets first. 2. Hold the system fan with the cable facing the bottom of the computer. 3. Align the grooves of the system fan with the grommets on the chassis wall. 4. Pass the
  • Dell OptiPlex 5070 Tower | Service Manual - Page 113
    7. Close the front panel door. 8. Install the: a. Intrusion switch b. Front bezel c. Side cover 9. Follow the procedure in After working inside your computer. Optional VGA module Removing optional VGA module 1. Follow the procedure in Before working inside your computer. 2. Remove the: a. Side cover
  • Dell OptiPlex 5070 Tower | Service Manual - Page 114
    b. Disconnect the VGA cable from the connector on the system board [1]. c. Remove the VGA module from the system [2]. Installing optional VGA module 1. To remove the metal bracket as shown below, insert a flathead screwdriver in the hole of the bracket [1], push the bracket to release the bracket
  • Dell OptiPlex 5070 Tower | Service Manual - Page 115
    3. Replace the two (M3X3) screws to secure the optional VGA module to the system. 4. Install the system fan . 5. Close the front panel door. 6. Install the: a. Front bezel b. Side cover 7. Follow the procedure in After working inside your computer. System board Removing system board 1. Follow the
  • Dell OptiPlex 5070 Tower | Service Manual - Page 116
    g. Heatsink fan 5. Disconnect the following cables: a. Intrusion switch b. Power switch 6. Disconnect the following cables from the system board: a. CPU power [1] b. Hard drive data and optical drive data [2] c. Speaker [3] d. System power [4] e. SATA [5] 7. To remove the system board: a. Remove the
  • Dell OptiPlex 5070 Tower | Service Manual - Page 117
    b. Slide and lift the system board away from the computer [1, 2]. Removing and installing components 117
  • Dell OptiPlex 5070 Tower | Service Manual - Page 118
    Installing the system board 1. Hold the system board by its edges and align it towards the back of the computer. 2. Lower the system board into the computer until the connectors at the back of the system board align with the slots on the chassis, and the screw holes on the system board align with
  • Dell OptiPlex 5070 Tower | Service Manual - Page 119
    routing clips. 5. Align the cables with the pins on connectors on the system board and connect the following cables to the system board: a. SATA [1] b. System power [2] c. Speaker [3] d. Hard drive data and optical drive data [4] e. CPU power [5] Removing and installing components 119
  • Dell OptiPlex 5070 Tower | Service Manual - Page 120
    6. Install the: a. Memory module b. M.2 SSD c. Expansion cards d. SD card reader e. Processor f. Heatsink assembly 7. Connect the following cables: a. Power switch b. Intrusion switch 8. Close the front panel door 9. Install the: a. Front bezel b. Side cover 10. Follow the procedure in After working
  • Dell OptiPlex 5070 Tower | Service Manual - Page 121
    5 Troubleshooting Topics: • Enhanced Pre-Boot System Assessment - ePSA diagnostics • Diagnostics • Power-Supply Unit Built-in Self-Test • Diagnostic error messages • System error messages • Recovering the operating system • Real Time Clock-RTC reset • Backup media and recovery options • WiFi power
  • Dell OptiPlex 5070 Tower | Service Manual - Page 122
    The computer is receiving electrical power, and power supplied by the power supply is normal. A device Spec - Pre-Post indicators [40] Bad MBD, PSU or PSU cabling - Rows B, C and D of table 12.4 SIO spec [40] Bad MBD, DIMMS or CPU Rows F and K from table 12.4 of SIO spec [40] 122 Troubleshooting
  • Dell OptiPlex 5070 Tower | Service Manual - Page 123
    SIO spec [ Power-Supply Unit Built-in Self-Test Built-in Self-Test (BIST) helps determine if the power-supply unit is working. To run self-test diagnostics on the power-supply unit of a desktop or all-in-one computer, see the knowledge base article 000125179 at www.dell.com/support. Troubleshooting
  • Dell OptiPlex 5070 Tower | Service Manual - Page 124
    microprocessor has failed. Contact Dell The optical drive does hard drive tests in Dell Diagnostics. The operation error appears again, Contact Dell The file that you are Hard Disk Drive tests in Dell Diagnostics. The hard drive problem persists, try another drive. Run the Hard Disk Drive tests in Dell
  • Dell OptiPlex 5070 Tower | Service Manual - Page 125
    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 Dell. NO TIMER TICK INTERRUPT A chip on the system board may be malfunctioning. Run the System Set tests in Dell Diagnostics. Troubleshooting
  • Dell OptiPlex 5070 Tower | Service Manual - Page 126
    OF-DAY CLOCK LOST POWER TIME-OF-DAY problem persists, Contact Dell. The optional ROM has failed. Contact Dell Help and Support for instructions (click Start > Help and Support). If a in Dell Diagnostics or Contact Dell. Insert problem, please note this checkpoint and contact Dell Technical Support
  • Dell OptiPlex 5070 Tower | Service Manual - Page 127
    Support website to troubleshoot and fix your computer when it fails to boot into their primary operating system due to software or hardware failures. For more information about the Dell SupportAssist OS Recovery, see Dell SupportAssist OS Recovery User's Guide at www.dell.com/serviceabilitytools
  • Dell OptiPlex 5070 Tower | Service Manual - Page 128
    to create a recovery drive to troubleshoot and fix problems that may occur with Windows. Dell proposes multiple options for recovering Windows operating system on your Dell PC. For more information. see Dell Windows Backup Media and Recovery Options. WiFi power cycle If your computer is unable
  • Dell OptiPlex 5070 Tower | Service Manual - Page 129
    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: 1. Go to Dell.com/support. 2. Select your support category. 3. Verify your country or region in the Choose a Country
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OptiPlex 5070 Tower
Service Manual
Regulatory Model: D18M
Regulatory Type: D18M005
October 2021
Rev. A02