Dell C0WCT Specification Sheet
Dell OptiPlex 7070 Ultra
Service Manual
Regulatory Model: D13U
Regulatory Type: D13U001
Notes, cautions, and warnings
NOTE: A NOTE indicates important information that helps you make better use of your product.
CAUTION: A CAUTION indicates either potential 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.
© 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
Contents
1 Working on your computer............................................................................................................ 5
Safety instructions................................................................................................................................................................ 5
Turning off your computer — Windows 10....................................................................................................................... 5
Before working inside your device.......................................................................................................................................6
After working inside your device......................................................................................................................................... 6
2 Removing and installing components............................................................................................. 8
Recommended tools..............................................................................................................................................................8
Screw List...............................................................................................................................................................................8
Hard-drive assembly..............................................................................................................................................................8
Removing the hard-drive assembly............................................................................................................................... 8
Installing the hard-drive assembly................................................................................................................................. 9
Hard-drive bracket................................................................................................................................................................11
Removing the hard-drive bracket................................................................................................................................. 11
Installing the hard-drive bracket....................................................................................................................................11
Hard drive..............................................................................................................................................................................12
Removing the hard drive............................................................................................................................................... 12
Installing the hard drive..................................................................................................................................................13
Cover..................................................................................................................................................................................... 14
Removing the cover.......................................................................................................................................................14
Installing the cover......................................................................................................................................................... 15
Memory modules..................................................................................................................................................................16
Removing the memory module.....................................................................................................................................16
Installing the memory module....................................................................................................................................... 17
WLAN card............................................................................................................................................................................18
Removing the WLAN card............................................................................................................................................ 18
Installing the WLAN card...............................................................................................................................................19
Solid state drive................................................................................................................................................................... 20
Removing the solid-state drive....................................................................................................................................20
Installing the solid-state drive....................................................................................................................................... 21
System fan........................................................................................................................................................................... 22
Removing the system fan.............................................................................................................................................22
Installing the system fan............................................................................................................................................... 22
Power button....................................................................................................................................................................... 23
Removing the power button........................................................................................................................................ 23
Installing the power button...........................................................................................................................................24
Coin-cell battery.................................................................................................................................................................. 26
Removing the coin-cell battery....................................................................................................................................26
Installing the coin-cell battery...................................................................................................................................... 27
System board.......................................................................................................................................................................28
Removing the system board........................................................................................................................................ 28
Installing the system board...........................................................................................................................................29
Heat-sink............................................................................................................................................................................... 31
Removing the heat-sink.................................................................................................................................................31
Contents 3
Installing the heat-sink.................................................................................................................................................. 32
Replacing the chassis..........................................................................................................................................................34
3 System setup.............................................................................................................................35
Boot menu............................................................................................................................................................................35
Navigation keys....................................................................................................................................................................35
Boot Sequence.................................................................................................................................................................... 36
System setup options......................................................................................................................................................... 36
General options.............................................................................................................................................................. 36
System information........................................................................................................................................................37
Video................................................................................................................................................................................38
Security...........................................................................................................................................................................38
Secure boot....................................................................................................................................................................39
Intel Software Guard Extensions.................................................................................................................................40
Performance...................................................................................................................................................................40
Power management.......................................................................................................................................................41
POST behavior...............................................................................................................................................................42
Manageability................................................................................................................................................................. 42
Virtualization support.................................................................................................................................................... 42
Wireless...........................................................................................................................................................................43
Maintenance screen...................................................................................................................................................... 43
System logs.................................................................................................................................................................... 44
Advanced Configuration............................................................................................................................................... 44
Updating the BIOS in Windows ........................................................................................................................................ 44
Updating BIOS on systems with BitLocker enabled................................................................................................. 45
Updating your BIOS from the F12 One-Time Boot Menu........................................................................................ 45
Updating your system BIOS using a USB flash drive................................................................................................45
System and setup password..............................................................................................................................................46
Assigning a system setup password........................................................................................................................... 46
Deleting or changing an existing system setup password........................................................................................46
4 Troubleshooting......................................................................................................................... 48
Enhanced Pre-Boot System Assessment (ePSA) diagnostics......................................................................................48
Running the ePSA diagnostics.....................................................................................................................................48
WiFi power cycle................................................................................................................................................................. 48
Diagnostic LED.....................................................................................................................................................................49
5 Getting help............................................................................................................................... 51
Contacting Dell..................................................................................................................................................................... 51
4
Contents
1
Working on your computer
Safety instructions
Prerequisites
Use the following safety guidelines to protect your computer from potential damage and to ensure your personal safety. Unless otherwise
noted, each procedure included in this document assumes that the following conditions exist:
• You have read the safety information that shipped with your computer.
• A component can be replaced or, if purchased separately, installed by performing the removal procedure in reverse order.
About this task
NOTE: Disconnect all power sources before opening the computer cover or panels. After you finish working inside the
computer, replace all covers, panels, and screws before connecting to the power source.
WARNING: Before working inside your computer, read the safety information that shipped with your computer. For
additional safety best practices information, see the Regulatory Compliance Homepage
CAUTION: Many repairs may only be done by a certified service technician. You should only perform 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 that came with the product.
CAUTION: To avoid electrostatic 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 pins.
CAUTION: When you disconnect a cable, pull on its connector or on its pull-tab, not on the cable itself. Some cables
have connectors with locking tabs; if you are disconnecting this type of cable, press in on the locking tabs before you
disconnect the cable. As you pull connectors apart, keep them evenly aligned to avoid bending any connector pins. Also,
before you connect a cable, ensure that both connectors are correctly oriented and aligned.
NOTE: The color of your computer and certain components may appear differently than shown in this document.
CAUTION: System will shut down if side covers are removed while the system is running. The system will not power on
if the side cover is removed.
CAUTION: System will shut down if side covers are removed while the system is running. The system will not power on
if the side cover is removed.
CAUTION: System will shut down if side covers are removed while the system is running. The system will not power on
if the side cover is removed.
Turning off your computer — Windows 10
About this task
CAUTION:
computer or remove the side cover.
To avoid losing data, save and close all open files and exit all open programs before you turn off your
Working on your computer 5
Steps
1. Click or tap .
2. Click or tap and then click or tap Shut down.
NOTE: Ensure that the computer and all attached devices are turned off. If your computer and attached devices did
not automatically turn off when you shut down your operating system, press and hold the power button for about 6
seconds to turn them off.
Before working inside your device
About this task
To avoid damaging your device, perform the following steps before you begin working inside the device:
Steps
1. Ensure that you follow the Safety Instruction.
2. Ensure that your work surface is flat and clean to prevent the device cover from being scratched.
3. Turn off your device.
4. Remove the device from the stand:
Removing device from Fixed-height stand or Height-adjustable stand:
a) Disconnect the keyboard/mouse, network, power adapter, and USB Type-C cable from the device.
CAUTION:
the network device.
b) Slide the release latch on the stand until you hear a click to release the stand cover.
c) Slide and lift the back cover to release it from the stand.
d) Pull the retention latch that secures the device to the stand cover.
e) Lift the device from the cover.
Removing device from offset VESA mount:
a) Disconnect the keyboard/mouse, network, power adapter, and USB Type-C cable from the device.
b) Push the quick release button on the VESA mount.
c) Slide and remove the monitor arm from the offset VESA mount (U/P-series monitor).
To disconnect a network cable, first unplug the cable from your device and then unplug the cable from
NOTE:
d) Remove the four screws that secure the offset VESA mount to the monitor.
e) Remove the four holders on which the offset VESA mount is mounted.
f) Lift the offset VESA mount from the monitor.
g) Remove the four screws that secure the device to the offset VESA mount.
h) Lift the device away from the offset VESA mount.
5. Press and hold the power button while the device is unplugged to ground the system board.
NOTE:
an unpainted metal surface at the same time as touching a connector on the back of the computer.
For E-series monitor, remove the VESA cover.
To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching
After working inside your device
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. Install the device in the stand:
Installing the device on Fixed-height stand or Height-adjustable stand:
6
Working on your computer
a) Unlock the latch on the lower chassis of the stand to remove the stand cover.
b) Align and position the top side of the device to the upper chassis of the stand back cover.
c) Align the power button on the device with the slot on the stand back cover chassis.
d) Press the device until the retention latch clicks into place and secures it.
e) Connect the keyboard/mouse, network, power adapter, and USB Type-C cable to the device.
CAUTION: To connect a network cable, first plug the cable into the network device and then plug it into the
device.
f) Slide the back cover, along with the device, into the stand until it clicks into place.
g) Lock the stand cover.
Installing the device on offset VESA mount:
a) Align the screw holes on the device to the screw holes on the offset VESA mount.
b) Install the four screws to secure the device to the offset VESA mount.
c) Align the screw holes in the offset VESA mount with the screw holes on the back cover of the monitor.
d) Install the four screws to secure the offset VESA mount to the monitor.
e) Align the tabs on the adapter that is attached to the stand, with the slots on the back of the monitor.
f) Slide the tabs on the stand adapter into its slots on the monitor.
g) Connect the keyboard/mouse, network, power adapter, and USB Type-C cable to the device.
CAUTION: To connect a network cable, first plug the cable into the network device and then plug it into the
device.
2. Turn on your device.
3. If required, verify that the device works correctly by running ePSA diagnostics.
Working on your computer
7
Removing and installing components
Recommended tools
The procedures in this document require the following tools:
• Phillips #0 screwdriver
• Phillips #1 screwdriver
• T6 Torx screwdriver
• Plastic scribe
Screw List
The following table shows the screw list and the images for different components.
Table 1. Screw Size List
Component Screw type Quantity Image
Power button M2x3 1
2
System board M2x3 4
HDD bracket (or non HDD
bracket)
M.2 WLAN M2x3.5 1
M.2 SSD M2x3.5 1
M2x3 1
Hard-drive assembly
Removing the hard-drive assembly
Prerequisites
1. Follow the procedure in Before working inside your device.
About this task
The figure indicates the location of the hard-drive assembly module and provides a visual representation of the removal procedure.
8 Removing and installing components
Steps
1. Remove the M2x3 screw that secures the hard-drive assembly to the cover.
2. Turn the hard-drive assembly.
3. Lift the cable release latch and disconnect the hard-drive cable from the connector on the system board.
4. Carefully unroute the hard-drive cable from the slot on the chassis.
NOTE:
when you replace the component to prevent the cable from from being pinched or crimped.
5. Remove the hard-drive assembly.
Observe the routing of the hard-drive cable inside the chassis as you remove them. Route the cable properly
Installing the hard-drive assembly
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The figure indicates the location of the hard-drive assembly module and provides a visual representation of the installation procedure.
Removing and installing components
9
Steps
1. Place the hard-drive assembly on the cover.
2. Route the hard-drive cable through the slot on the chassis.
3. Connect the hard-drive cable to the connector on the system board.
4. Route the hard-drive cable to the release latch.
5. Turn the hard-drive assembly module and align the tabs on the hard-drive assembly with the slots on the chassiis.
6. Align the screw hole on the hard-drive assembly module with the screw hole on the cover.
7. Replace the M2x3 screw to secure the hard-drive assembly module to the cover.
Next steps
1. Follow the procedure in After working on your device.
10
Removing and installing components
Hard-drive bracket
Removing the hard-drive bracket
Prerequisites
1. Follow the procedure in Before working inside your device.
2. Remove the hard-drive assembly.
About this task
Steps
Pull the rubber tab on the protective sleeve and lift the hard-drive module out from the hard-drive bracket.
Installing the hard-drive bracket
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
Steps
1. Align the connector edge of the hard-drive module with the tab end of the hard-drive bracket.
Removing and installing components
11
2. Place the hard-drive module in the hard-drive bracket.
Next steps
1. Install the hard drive assembly.
2. Follow the procedure in After working on your device.
Hard drive
Removing the hard drive
Prerequisites
1. Follow the procedure in Before working inside your device.
2. Remove the hard-drive assembly.
3. Remove the hard-drive bracket.
About this task
The figure indicates the location of the hard-drive module and provides a visual representation of the removal procedure.
Steps
1. Disconnect the hard-drive cable from the connector on the hard drive.
2. Release the protective sleeve from one side of the hard-drive edges.
3. Gently pull the hard-drive out of the protective sleeve.
12
Removing and installing components
Installing the hard drive
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The figure indicates the location of the hard-drive module and provides a visual representation of the installation procedure.
Steps
1. Insert the hard drive into the protective sleeve.
NOTE:
2. Pull the protective sleeves along the hard-drive edges.
3. Connect the hard-drive cable to the connector on the hard drive.
Next steps
1. Install the hard-drive bracket.
2. Install the hard drive assembly.
3. Follow the procedure in After working on your device.
Ensure to match the mark on the protective sleeve with the hard drive PIN and connector location.
Removing and installing components
13
Cover
Removing the cover
Prerequisites
1. Follow the procedure in Before working inside your device.
About this task
The figure indicates the location of the cover and provides a visual representation of the removal procedure.
Steps
1. Slide the cover to release it from the chassis.
2. Lift the cover.
14
Removing and installing components
Installing the cover
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The figure indicates the location of the cover and provides a visual representation of the installation procedure.
Steps
1. Align the tabs on the cover with the slots on the chassis.
2. Slide the cover until it clicks into place.
Next steps
1. Follow the procedure in After working on your device.
Removing and installing components
15
Memory modules
Removing the memory module
Prerequisites
1. Follow the procedure in Before working inside your device.
2. Remove the cover.
About this task
The figure indicates the location of the memory module and provides a visual representation of the removal procedure.
Steps
1. Lift the absorber above the memory module.
2. Gently pry the retention clips away from the memory module until the memory module pops up.
3. Slide and remove the memory module from the memory-module slot on the system board.
16
Removing and installing components
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