Dell TK3R5 Service Manual
Dell Vostro 5481
Service Manual
Regulatory Model: P92G
Regulatory Type: P92G001
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.
© 2018 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.
2018 - 11
Rev. A00
Contents
1 Working on your computer............................................................................................................................. 6
Safety instructions.............................................................................................................................................................6
Turning o your computer — Windows 10.....................................................................................................................6
Before working inside your computer..............................................................................................................................6
After working inside your computer.................................................................................................................................7
2 Technology and components..........................................................................................................................8
DDR4................................................................................................................................................................................... 8
DDR4 Details.................................................................................................................................................................8
Memory Errors..............................................................................................................................................................9
USB features...................................................................................................................................................................... 9
USB 3.0/USB 3.1 Gen 1 (SuperSpeed USB)............................................................................................................. 9
Speed........................................................................................................................................................................... 10
Applications.................................................................................................................................................................. 11
Compatibility................................................................................................................................................................ 11
USB Type-C........................................................................................................................................................................11
Alternate Mode............................................................................................................................................................11
USB Power Delivery................................................................................................................................................... 12
USB Type-C and USB 3.1........................................................................................................................................... 12
Intel Optane memory........................................................................................................................................................12
Disabling Intel Optane memory................................................................................................................................. 12
Enabling Intel Optane memory..................................................................................................................................13
Intel UHD Graphics 620...................................................................................................................................................13
Nvidia GeForce MX130 equivalent................................................................................................................................. 14
3 Removing and installing components............................................................................................................15
Recommended tools........................................................................................................................................................ 15
Screw list........................................................................................................................................................................... 15
Base cover.........................................................................................................................................................................16
Removing the base cover..........................................................................................................................................16
Installing the base cover.............................................................................................................................................17
Battery............................................................................................................................................................................... 19
Lithium-ion battery precautions................................................................................................................................ 19
Removing the battery................................................................................................................................................20
Installing the battery...................................................................................................................................................21
Coin-cell battery...............................................................................................................................................................23
Removing the coin cell battery.................................................................................................................................23
Installing the coin cell battery...................................................................................................................................24
WLAN card....................................................................................................................................................................... 25
Removing the WLAN card........................................................................................................................................25
Installing the WLAN card.......................................................................................................................................... 26
Memory modules..............................................................................................................................................................27
Removing the memory modules...............................................................................................................................27
Contents
3
Installing the memory module...................................................................................................................................28
Hard drive......................................................................................................................................................................... 29
Removing the 2.5 inch hard drive............................................................................................................................ 29
Installing the 2.5 inch hard drive............................................................................................................................... 31
Solid-state drive............................................................................................................................................................... 33
Removing the solid-state drive.................................................................................................................................33
Installing the solid-state drive...................................................................................................................................34
Speaker............................................................................................................................................................................. 36
Removing the speaker...............................................................................................................................................36
Installing the speaker................................................................................................................................................. 37
System fan........................................................................................................................................................................38
Removing the system fan......................................................................................................................................... 38
Installing the system fan............................................................................................................................................39
Heat sink .......................................................................................................................................................................... 40
Removing the heatsink..............................................................................................................................................40
Installing the heat sink...............................................................................................................................................42
Input output board...........................................................................................................................................................43
Removing the Input and Output board................................................................................................................... 43
Installing the Input and Output board......................................................................................................................44
Display assembly.............................................................................................................................................................. 45
Removing the display assembly............................................................................................................................... 45
Installing the display assembly..................................................................................................................................50
Power button with ngerprint reader............................................................................................................................53
Removing the power button with ngerprint reader.............................................................................................53
Installing the power button with ngerprint reader............................................................................................... 54
Power button................................................................................................................................................................... 55
Removing the power button.................................................................................................................................... 55
Installing the power button.......................................................................................................................................56
Power–adapter board......................................................................................................................................................57
Removing the power-adapter port.......................................................................................................................... 57
Installing the power-adapter port............................................................................................................................ 58
Touchpad.......................................................................................................................................................................... 59
Removing the touchpad............................................................................................................................................59
Installing the touchpad..............................................................................................................................................62
System board....................................................................................................................................................................64
Removing the system board.....................................................................................................................................64
Installing the system board....................................................................................................................................... 67
Palmrest and keyboard assembly................................................................................................................................... 70
Removing the palmrest and keyboard assembly.................................................................................................... 70
4 Troubleshooting........................................................................................................................................... 72
Enhanced Pre-Boot System Assessment — ePSA diagnostics................................................................................ 72
Running the ePSA Diagnostics.................................................................................................................................72
Diagnostic LED................................................................................................................................................................. 73
Battery status LED...........................................................................................................................................................73
5 Getting help.................................................................................................................................................75
Contents
4
Contacting Dell.................................................................................................................................................................75
Contents 5
Working on your computer
Safety instructions
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.
WARNING: Disconnect all power sources before opening the computer cover or panels. After you nish 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 certied 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 dierently than shown in this document.
1
Turning o your computer — Windows 10
CAUTION
remove the side cover.
Click or tap .
1
2 Click or tap and then click or tap Shut down.
: To avoid losing data, save and close all open les and exit all open programs before you turn o your computer or
: Ensure that the computer and all attached devices are turned o. If your computer and attached devices did not
NOTE
automatically turn o when you shut down your operating system, press and hold the power button for about 6 seconds to
turn them o.
Before working inside your computer
To avoid damaging your computer, perform the following steps before you begin working inside the computer.
1 Ensure that you follow the Safety Instruction.
2 Ensure that your work surface is at and clean to prevent the computer cover from being scratched.
6 Working on your computer
3 Turn o your computer.
4 Disconnect all network cables from the computer.
CAUTION: To disconnect a network cable, rst unplug the cable from your computer and then unplug the cable from the
network device.
5 Disconnect your computer and all attached devices from their electrical outlets.
6 Press and hold the power button while the computer is unplugged to ground the system board.
NOTE: 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.
After working inside your computer
After you complete any replacement procedure, ensure that you connect any external devices, cards, and cables before turning on your
computer.
1 Connect any telephone or network cables to your computer.
CAUTION: To connect a network cable, rst plug the cable into the network device and then plug it into the
computer.
2 Connect your computer and all attached devices to their electrical outlets.
3 Turn on your computer.
4 If required, verify that the computer works correctly by running ePSA diagnostics.
Working on your computer
7
2
Technology and components
NOTE: Instructions provided in this section are applicable on computers shipped with Windows 10 operating system. Windows 10
is factory-installed with this computer.
Topics:
• DDR4
• USB features
• USB Type-C
• Intel Optane memory
• Intel UHD Graphics 620
• Nvidia GeForce MX130 equivalent
DDR4
DDR4 (double data rate fourth generation) memory is a higher-speed successor to the DDR2 and DDR3 technologies and allows up to 512
GB in capacity, compared to the DDR3's maximum of 128 GB per DIMM. DDR4 synchronous dynamic random-access memory is keyed
dierently from both SDRAM and DDR to prevent the user from installing 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 power-down
mode is expected to reduce standby power consumption by 40 to 50 percent.
DDR4 Details
There are subtle dierences between DDR3 and DDR4 memory modules, as listed below.
Key notch dierence
The key notch on a DDR4 module is in a dierent location from the key notch on a DDR3 module. Both notches are on the insertion edge
but the notch location on the DDR4 is slightly dierent, to prevent the module from being installed into an incompatible board or platform.
Figure 1. Notch dierence
Increased thickness
DDR4 modules are slightly thicker than DDR3, to accommodate more signal layers.
8 Technology and components
Figure 2. Thickness dierence
Curved edge
DDR4 modules feature a curved edge to help with insertion and alleviate stress on the PCB during memory installation.
Figure 3. Curved edge
Memory Errors
Memory errors on the system display the new ON-FLASH-FLASH or ON-FLASH-ON failure code. If all memory fails, the LCD does not
turn on. Troubleshoot for possible memory failure by trying known good memory modules in the memory connectors on the bottom of the
system or under the keyboard, as in some portable systems.
USB features
Universal Serial Bus, or USB, was introduced in 1996. It dramatically simplied the connection between host computers and peripheral
devices like mice, keyboards, external drivers, and printers.
Let's take a quick look on the USB evolution referencing to the table below.
Table 1. USB evolution
Type Data Transfer Rate Category Introduction Year
USB 2.0 480 Mbps High Speed 2000
USB 3.0/USB 3.1 Gen 1 5 Gbps Super Speed 2010
USB 3.1 Gen 2 10 Gbps Super Speed 2013
USB 3.0/USB 3.1 Gen 1 (SuperSpeed USB)
For years, the USB 2.0 has been rmly entrenched as the de facto interface standard in the PC world with about 6 billion devices sold, and
yet the need for more speed grows by ever faster computing hardware and ever greater bandwidth demands. The USB 3.0/USB 3.1 Gen 1
Technology and components
9
nally has the answer to the consumers' demands with a theoretically 10 times faster than its predecessor. In a nutshell, USB 3.1 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
• Full-duplex data transfers and support for new transfer types
• Backward USB 2.0 compatibility
• New connectors and cable
The topics below cover some of the most commonly asked questions regarding USB 3.0/USB 3.1 Gen 1.
Speed
Currently, there are 3 speed modes dened by the latest USB 3.0/USB 3.1 Gen 1 specication. They are Super-Speed, Hi-Speed and FullSpeed. The new SuperSpeed mode has a transfer rate of 4.8Gbps. While the specication retains Hi-Speed, and Full-Speed USB mode,
commonly known as USB 2.0 and 1.1 respectively, the slower modes still operate at 480Mbps and 12Mbps respectively and are kept to
maintain backward compatibility.
USB 3.0/USB 3.1 Gen 1 achieves the much higher performance by the technical changes below:
• An additional physical bus that is added in parallel with the existing USB 2.0 bus (refer to the picture below).
• USB 2.0 previously had four wires (power, ground, and a pair for dierential data); USB 3.0/USB 3.1 Gen 1 adds four more for two pairs
of dierential signals (receive and transmit) for a combined total of eight connections in the connectors and cabling.
• USB 3.0/USB 3.1 Gen 1 utilizes the bidirectional data interface, rather than USB 2.0's half-duplex arrangement. This gives a 10-fold
increase in theoretical bandwidth.
With today's ever increasing demands placed on data transfers with high-denition video content, terabyte storage devices, high megapixel
count digital cameras etc., USB 2.0 may not be fast enough. Furthermore, no USB 2.0 connection could ever come close to the 480Mbps
theoretical maximum throughput, making data transfer at around 320Mbps (40MB/s) — the actual real-world maximum. Similarly, USB
3.0/USB 3.1 Gen 1 connections will never achieve 4.8Gbps. We will likely see a real-world maximum rate of 400MB/s with overheads. At this
speed, USB 3.0/USB 3.1 Gen 1 is a 10x improvement over USB 2.0.
Technology and components
10
Applications
USB 3.0/USB 3.1 Gen 1 opens up the laneways and provides more headroom for devices to deliver a better overall experience. 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 2Gbps
throughput. Where 480Mbps was limiting, 5Gbps is more than promising. With its promised 4.8Gbps speed, the standard will nd its way
into some products that previously weren't USB territory, like external RAID storage systems.
Listed below are some of the available SuperSpeed USB 3.0/USB 3.1 Gen 1 products:
• External Desktop USB 3.0/USB 3.1 Gen 1 Hard Drives
• Portable USB 3.0/USB 3.1 Gen 1 Hard Drives
• USB 3.0/USB 3.1 Gen 1 Drive Docks & Adapters
• USB 3.0/USB 3.1 Gen 1 Flash Drives & Readers
• USB 3.0/USB 3.1 Gen 1 Solid-state Drives
• USB 3.0/USB 3.1 Gen 1 RAIDs
• Optical Media Drives
• Multimedia Devices
• Networking
• USB 3.0/USB 3.1 Gen 1 Adapter Cards & Hubs
Compatibility
The good news is that USB 3.0/USB 3.1 Gen 1 has been carefully planned from the start to peacefully co-exist with USB 2.0. First of all,
while USB 3.0/USB 3.1 Gen 1 species new physical connections and thus new cables to take advantage of the higher speed capability of
the new protocol, the connector itself remains the same rectangular shape with the four USB 2.0 contacts in the exact same location as
before. Five new connections to carry receive and transmitted data independently are present on USB 3.0/USB 3.1 Gen 1 cables and only
come into contact when connected to a proper SuperSpeed USB connection.
Windows 8/10 will be bringing native support for USB 3.1 Gen 1 controllers. This is in contrast to previous versions of Windows, which
continue to require separate drivers for USB 3.0/USB 3.1 Gen 1 controllers.
Microsoft announced that Windows 7 would have USB 3.1 Gen 1 support, perhaps not on its immediate release, but in a subsequent Service
Pack or update. It is not out of the question to think that following a successful release of USB 3.0/USB 3.1 Gen 1 support in Windows 7,
SuperSpeed support would trickle down to Vista. Microsoft has conrmed this by stating that most of their partners share the opinion that
Vista should also support USB 3.0/USB 3.1 Gen 1.
USB Type-C
USB Type-C is a new, tiny physical connector. The connector itself can support various exciting new USB standard like USB 3.1 and USB
power delivery (USB PD).
Alternate Mode
USB Type-C is a new connector standard that's very small. It's about a third the size of an old USB Type-A plug. This is a single connector
standard that every device should be able to use. USB Type-C ports can support a variety of dierent protocols using “alternate modes,”
which allows you to have adapters that can output HDMI, VGA, DisplayPort, or other types of connections from that single USB port
Technology and components
11
USB Power Delivery
The USB PD specication is also closely intertwined with USB Type-C. Currently, smartphones, tablets, and other mobile devices often use
a USB connection to charge. A USB 2.0 connection provides up to 2.5 watts of power — that'll charge your phone, but that's about it. A
laptop might require up to 60 watts, for example. The USB Power Delivery specication ups this power delivery to 100 watts. It's bidirectional, so a device can either send or receive power. And this power can be transferred at the same time the device is transmitting
data across the connection.
This could spell the end of all those proprietary laptop charging cables, with everything charging via a standard USB connection. You could
charge your laptop from one of those portable battery packs you charge your smartphones and other portable devices from today. You
could plug your laptop into an external display connected to a power cable, and that external display would charge your laptop as 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 bandwidth is 5 Gbps, while USB 3.1 Gen2 is10Gbps . That's double the bandwidth, as
fast as a rst-generation Thunderbolt connector. USB Type-C isn't the same thing as USB 3.1. USB Type-C is just a connector shape, and
the underlying technology could just be USB 2 or USB 3.0. In fact, Nokia's N1 Android tablet uses a USB Type-C connector, but underneath
it's all USB 2.0 — not even USB 3.0. However, these technologies are closely related.
Intel Optane memory
Intel Optane memory 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 or higher
• Intel Rapid Storage Technology driver version 15.9.1.1018 or higher
Table 2. Intel Optane memory specications
Feature Specications
Interface PCIe 3x2 NVMe 1.1
Connector M.2 card slot (2230/2280)
Congurations supported
Capacity 16 GB
• 7th Generation or higher Intel Core i3/i5/i7 processor
• Windows 10 64-bit version or higher
• Intel Rapid Storage Technology driver version 15.9.1.1018 or
higher
Disabling Intel Optane memory
CAUTION
blue screen error. The Intel Rapid Storage Technology user interface can be removed without uninstalling the driver.
: After disabling Intel Optane memory, do not uninstall the driver for Intel Rapid Storage Technology as it will result in a
12 Technology and components
NOTE: Disabling Intel Optane memory is required before removing the SATA storage device, accelerated by the Intel Optane
memory module, from the computer.
1 On the taskbar, click the search box, and then type "Intel Rapid Storage Technology".
2 Click Intel Rapid Storage Technology. The Intel Rapid Storage Technology window is displayed.
3 On the Intel Optane memory tab, click Disable to disable the Intel Optane memory.
4 Click Yes if you accept the warning.
The disabling progress is displayed.
5 Click Reboot to complete disabling Intel Optane memory and restart your computer.
Enabling Intel Optane memory
1 On the taskbar, click the search box, and type "Intel Rapid Storage Technology".
2 Click Intel Rapid Storage Technology.
3 On the Status tab, click Enable to enable the Intel Optane memory.
4 On the warning screen, select a compatible fast drive, and then click Yes to continue enabling Intel Optane memory.
5 Click Intel Optane memory > Reboot to enable the Intel Optane memory.
NOTE: Applications may take up to three subsequent launches after enablement to see the full performance benets.
Intel UHD Graphics 620
Table 3. Intel UHD Graphics 620
Intel UHD Graphics 620
Bus Type Integrated
Memory Type DDR3 / DDR4
Graphics Level i3/i5/i7: G T2 (UHD 620)
Estimated Maximum Power Consumption (TDP) 15 W (included in the CPU power)
Overlay Planes Yes
Operating Systems Graphics/ Video API Support DirectX 11 (Windows 7/8.1), DirectX 12 (Windows 10), OpenGL 4.3
Maximum Vertical Refresh Rate Up to 85 Hz depending on resolution
Multiple Display Support
External Connectors
specications
On System: eDP (internal), HDMI
Via Optional Type-C Port: VGA, DisplayPort, DVI
HDMI 1.4b
Type C port
Technology and components 13
Nvidia GeForce MX130 equivalent
Table 4. Nvidia GeForce MX130 specications
Feature Specications
Graphics memory 2 GB GDDR5
Bus type PCI Express 3.0
Memory Interface GDDR5
Clock Speeds 1122 - 1242 (Boost) MHz
Maximum Color Depth N/A
Maximum Vertical Refresh Rate N/A
Operating Systems Graphics/ Video API Support Windows 10/ DX 12/ OGL4.5
Supported Resolutions and Max Refresh Rates (Hz) N/A
Numbers of Display Support No display output from MX130
14 Technology and components
Removing and installing components
Recommended tools
The procedures in this document may require the following tools:
• Phillips #00 and #01 screwdriver
• Plastic scribe
Screw list
The following table provides the list of screws that are used for securing dierent components.
Table 5. Screw list
Component Screw type Quantity Screw image
Base cover (M2x5) 6
3
Battery M2x3 4
Fan M2x3 2
Hard-drive assembly M2x3 4
I/O board M2x3 2
Power-adapter port M2x3 1
Power button with ngerprint
reader (optional)
Solid-state drive/Intel Optane
memory module
Touchpad bracket M2x2 Big Head 3
Touchpad M2x2 Big Head
USB Type-C bracket M2x3 2
WLAN card bracket M2x3 1
M2x3 2
M2x3 1
4
Hard-drive bracket M3x3 4
Hinges M2.5x5 4
Removing and installing components 15
Component Screw type Quantity Screw image
System board M2x2 Big Head 4
Base cover
Removing the base cover
1 Follow the procedure in Before working inside your computer.
2 To remove the base cover:
a Loosen the 3 captive screws that secure the base cover to the palmrest and the keyboard assembly [1].
b Remove the 6 (M2x5) screws that secure the base cover to the palmrest and the keyboard assembly [2].
c Using a plastic scribe, pry the base cover starting from the top-left corner and working through the edges of the system. [1].
d Lift the base cover away from the system [2].
Removing and installing components
16
Installing the base cover
1 Align the base cover with the palmrest and the keyboard assembly.
2 Press the edges of the cover until it clicks into place.
Removing and installing components
17
3 Tighten the 3 captive screws to secure the base cover to the palmrest and keyboard assembly [1].
4 Replace the 6 (M2x5) screws to secure the base cover to the palmrest and keyboard assembly [2].
18
Removing and installing components
5 Follow the procedure in After working inside your computer.
Battery
Lithium-ion battery precautions
CAUTION
• Exercise caution when handling Lithium-ion batteries.
• Discharge the battery as much as possible before removing it from the system. This can be done by disconnecting the AC adapter
• Do not crush, drop, mutilate, or penetrate the battery with foreign objects.
• Do not expose the battery to high temperatures, or disassemble battery packs and cells.
• Do not apply pressure to the surface of the battery.
• Do not bend the battery.
• Do not use tools of any kind to pry on or against the battery.
• If a battery gets stuck in a device as a result of swelling, do not try to free it as puncturing, bending, or crushing a Lithium-ion
• Always purchase genuine batteries from https://www.dell.com or authorized Dell partners and re-sellers.
:
from the system to allow the battery to drain.
battery can be dangerous. In such an instance, the entire system should be replaced. Contact https://www.dell.com/support for
assistance and further instructions.
Removing and installing components 19
Removing the battery
1 Follow the procedure in Before working inside your computer.
2 Remove the base cover.
3 To remove the battery:
a Peel the adhesive tape that secures the battery cable connector to the system board [1].
b Disconnect the battery cable from the connector on the system board [2].
c Remove the 4 (M2x3) screws that secure the battery to the palmrest and keyboard assembly [1].
d Lift the battery away from the system [2].
20
Removing and installing components
Installing the battery
1 Align the screw holes on the battery with the screw holes on the palm-rest and keyboard assembly [1].
2 Replace the 4 (M2x3) screws that secure the battery to the palm-rest and keyboard assembly [2].
Removing and installing components
21
3 Connect the battery cable to the connector on the system board [1].
4 Ax the adhesive tape to secure the battery cable connector to the system board [2].
22
Removing and installing components
5 Install the base cover.
6 Follow the procedure in After working inside your computer.
Coin-cell battery
Removing the coin cell battery
1 Follow the procedure in Before working inside your computer.
2 Remove the:
a base cover
b battery
3 To remove the coin cell battery:
a Disconnect the coin cell battery cable from the connector on the system board [1].
b Peel the coin cell battery from the system [2].
Removing and installing components
23
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