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2014 - 09
Rev. A00
Contents
1 Working on Your Computer................................................................................5
Before Working Inside Your Computer................................................................................................ 5
Turning Off Your Computer..................................................................................................................6
After Working Inside Your Computer................................................................................................... 7
2 Removing and Installing Components............................................................. 8
Use the following safety guidelines to help protect your computer from potential damage and to help 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.
WARNING: 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 at
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, such as 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.
www.dell.com/regulatory_compliance
To avoid damaging your computer, perform the following steps before you begin working inside the
computer.
1.Ensure that your work surface is flat and clean to prevent the computer cover from being scratched.
2.Turn off your computer (see Turning Off Your Computer).
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CAUTION: To disconnect a network cable, first unplug the cable from your computer and
then unplug the cable from the network device.
3.Disconnect all network cables from the computer.
4.Disconnect your computer and all attached devices from their electrical outlets.
5.Press and hold the power button while the computer is unplugged to ground the system board.
6.Remove the cover.
CAUTION: Before touching anything inside your computer, ground yourself by touching an
unpainted metal surface, such as the metal at the back of the computer. While you work,
periodically touch an unpainted metal surface to dissipate static electricity, which could
harm internal components.
Turning Off Your Computer
CAUTION: To avoid losing data, save and close all open files and exit all open programs before
you turn off your computer.
1.Shut down the operating system:
•In Windows 8.1:
– Using a touch-enabled device:
a.Swipe in from the right edge of the screen, opening the Charms menu and select
Settings.
b.Select the and then select Shut down.
Or
*On the Home screen, touch the and then select Shut down.
– Using a mouse:
a.Point to upper-right corner of the screen and click Settings.
b.Click the and select Shut down.
Or
*On the Home screen, click and then select Shut down.
•In Windows 7:
1.Click Start.
2.Click Shut Down.
or
1.Click Start.
6
2.Click the arrow in the lower-right corner of the Start menu as shown below, and then click
Shut Down .
2.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.
After Working Inside Your Computer
After you complete any replacement procedure, ensure you connect any external devices, cards, and
cables before turning on your computer.
1.Replace the cover.
CAUTION: To connect a network cable, first plug the cable into the network device and then
plug it into the computer.
2.Connect any telephone or network cables to your computer.
3.Connect your computer and all attached devices to their electrical outlets.
4.Turn on your computer.
5.If required, verify that the computer works correctly by running the Dell Diagnostics.
7
Removing and Installing Components
This section provides detailed information on how to remove or install the components from your
computer.
Recommended Tools
The procedures in this document may require the following tools:
•Small slotted-tip screwdriver
•#2 Phillips screwdriver
•#1 Phillips screwdriver
•Small plastic scribe
For how-to videos, documentation, and troubleshooting solutions, scan this QR code, or click here:
http://www.Dell.com/QRL/Workstation/T7810
2
8
System Overview
Figure 1. Front and Back View of T7810 Computer
1.microphone connector
2.power button/Power light
3.hard-drive activity light
4.USB 3.0 connector
5.USB 2.0 connectors
6.optical-drive (optional)
7.optical-drive eject button (optional)
8.optical-drive (optional)
9.optical-drive eject button (optional)
10. headphone connector
11. line-in/microphone connector
12. serial connector
13. USB 2.0 connectors
14. PS/2 Keyboard connector
15. USB 3.0 connectors
16. line-out connector
17. security cable slot
18. padlock ring
19. network connector
20. PS/2 Mouse connector
21. active expansion card slots
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22. mechanical slot
23. power cable connector
24. power-supply unit (PSU) release latch
Figure 2. Inside View of T7810 Computer
1.processor heatsink with integrated fan2.front bezel
3.optical drive4.hard drives
5.PSU cable shroud6.graphics card
7.intrusion switch
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Figure 3. Inside View of T7810 Computer
1.speaker
2.system board
3.power-supply unit
4.memory shroud
5.PCIe card retention
Removing the Power Supply Unit (PSU)
1.Follow the procedures in Before Working Inside Your Computer.
2.If the PSU is locked, remove the screw to unlock the PSU. For more information, see the PSU Lock
Feature.
3.Perform the following steps as shown in the illustration:
a. Hold the handle bar and press down on the blue latch to release the PSU [1,2].
b. Hold the handle bar to slide the PSU out of the computer.
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Installing the Power Supply Unit (PSU)
1.Hold the PSU handle and slide the PSU into the computer.
2.Follow the procedures in After Working Inside Your Computer.
Removing the Computer Cover
1.Follow the procedures in Before Working Inside Your Computer.
2.Lift up the cover-release latch.
3.Lift the cover upward to a 45–degree angle, and remove it from the computer.
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Installing the Computer Cover
1.Place the computer cover on the chassis.
2.Press down on the computer cover until it clicks into place.
3.Follow the procedures in After Working Inside Your Computer.
Removing the Front Bezel
1.Follow the procedures in Before Working Inside Your Computer.
2.Remove the computer cover.
3.Pry the front bezel retention clips away from the chassis located at the edge of front bezel.
4.Rotate and pull the bezel panel away from the computer to release the hooks on the opposite edge
of the bezel from the chassis.
13
Installing the Front Bezel
1.Insert the hooks along the bottom edge of the front panel into the slots on the chassis front.
2.Rotate the bezel towards the computer to engage the front-bezel retention clips until they click into
place.
3.Install the computer cover.
4.Follow the procedures in After Working Inside Your Computer.
Removing the Slim Line Optical Drive
1.Follow the procedures in Before Working Inside Your Computer.
2.Remove the computer cover.
3.Disconnect the data and power cables from the optical drive.
4.Unthread the cables from the latches.
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5.Press on the clasp to release the latch holding the cables on the side of the optical-drive cage.
6.Lift up the cables.
15
7.Lift the release latch on top of the optical-drive cage.
8.Holding the release latch, slide the optical-drive cage from the optical-drive compartment.
9.Remove the screws that secure the optical drive to the optical-drive cage.
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10. Remove the screws that secure the optical drive to the optical-drive cage.
11. Remove the optical drive from the optical-drive cage.
Installing the Slim Line Optical Drive
1.Lift the release latch, and slide the optical-drive cage inside the compartment.
2.Press on the clasp to release the latch and thread the cables into the holder.
3.Connect the power cable to the back of the optical drive.
4.Connect the data cable to the back of the optical drive.
5.Install the computer cover.
6.Follow the procedures in After Working Inside Your Computer.
Removing the Hard Drive
1.Follow the procedures in Before Working Inside Your Computer.
2.Remove the computer cover.
3.Disconnect the power supply and data cables from the hard drive.
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4.Press in on the latches on both sides of the hard-drive bracket.
5.Slide the hard drive out of the compartment.
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6.If a 2.5–inch hard drive is installed, remove the screws and lift up the drive to remove it from the
hard-drive caddy.
7.If a 3.5–inch hard drive is installed, flex the hard-drive bracket on both sides to loosen the hard drive.
8.Lift the hard drive in an upward direction to remove it from the hard-drive bracket.
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Installing the Hard Drive
1.If a 3.5–inch hard drive is installed on the computer, place the hard drive and press in on the latches
of the hard-drive caddy.
2.If a 2.5–inch hard drive is installed on the computer, place the hard drive on the hard-drive caddy
and tighten the screws to secure the hard drive.
3.Secure the hard-drive in the hard-drive cage and slide it inside the compartment.
4.Connect the hard-drive power supply cable and data cable.
5.Install the computer cover.
6.Follow the procedures in After Working Inside Your Computer.
Removing the HDD Thermal Sensor
NOTE: The HDD thermal sensor is an optional component and your computer may not ship with it.
1.Follow the procedures in Before Working Inside Your Computer.
2.Remove the computer cover.
3.Identify the HDD thermal sensor connected to the system board.
4.Disconnect the HDD thermal sensor cable from the system board.
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5.Release the latch that secures the HDD thermal sensor. Here, the HDD thermal sensor is attached to
the hard drive.
Installing the HDD Thermal Sensor
NOTE: The HDD thermal sensor is an optional component and your computer may not ship with it.
1.Connect the HDD thermal sensor to the SAS HDD component that you wish to monitor the
temperature, and secure it with the latch.
2.Attach the HDD thermal sensor cable to the system board.
3.Install the computer cover.
4.Follow the procedures in After Working Inside Your Computer.
Removing the Input/Output (I/O) Panel
1.Follow the procedures in Before Working Inside Your Computer.
2.Remove:
a. computer cover
b. front bezel
3.Remove the screws that secure the I/O panel cage to the chassis.
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