Dell Precision 5540 Service Manual
Precision 5540
Service Manual
Regulatory Model: P56F
Regulatory Type: P56F003
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 - 06
Rev. A03
Contents
1 Working on your computer............................................................................................................ 5
Safety instructions................................................................................................................................................................ 5
Before working inside your computer........................................................................................................................... 5
Safety precautions...........................................................................................................................................................6
Electrostatic discharge—ESD protection.................................................................................................................... 6
ESD field service kit ........................................................................................................................................................ 7
Transporting sensitive components...............................................................................................................................7
After working inside your computer.............................................................................................................................. 8
2 Technology and components......................................................................................................... 9
Power supply specifications................................................................................................................................................. 9
Power adapter....................................................................................................................................................................... 9
Video specifications............................................................................................................................................................. 10
Audio specifications............................................................................................................................................................. 10
Display specifications...........................................................................................................................................................10
Keyboard specifications....................................................................................................................................................... 11
Battery...................................................................................................................................................................................12
Storage specifications......................................................................................................................................................... 12
3 Disassembly and reassembly........................................................................................................ 14
Disassembly and reassembly...............................................................................................................................................14
Base cover.......................................................................................................................................................................14
Battery.............................................................................................................................................................................15
PCIe Solid State Drive (SSD)........................................................................................................................................16
Hard drive........................................................................................................................................................................18
Speaker............................................................................................................................................................................19
WLAN card..................................................................................................................................................................... 20
Memory modules............................................................................................................................................................ 21
System fan......................................................................................................................................................................22
Heat sink assembly........................................................................................................................................................25
Power connector port...................................................................................................................................................26
System board................................................................................................................................................................. 27
Audio board.................................................................................................................................................................... 29
Coin-cell battery............................................................................................................................................................. 31
Power button................................................................................................................................................................. 32
Power button with fingerprint reader -optional.........................................................................................................33
Display Assembly............................................................................................................................................................34
Antenna cover................................................................................................................................................................36
Keyboard lattice and Keyboard....................................................................................................................................38
Palm rest.........................................................................................................................................................................40
4 Technology and components....................................................................................................... 44
USB Type-C......................................................................................................................................................................... 44
USB features........................................................................................................................................................................44
Contents 3
5 Troubleshooting......................................................................................................................... 47
Enhanced Pre-Boot System Assessment — ePSA diagnostics................................................................................... 47
Running the ePSA Diagnostics.....................................................................................................................................47
6 Getting help...............................................................................................................................48
Contacting Dell.................................................................................................................................................................... 48
4 Contents
1
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.
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.
Before working inside your computer
1. Ensure that your work surface is flat and clean to prevent the computer cover from being scratched.
2. Turn off your computer.
3. If the computer is connected to a docking device (docked), undock it.
4. Disconnect all network cables from the computer (if available).
CAUTION:
computer.
5. Disconnect your computer and all attached devices from their electrical outlets.
6. Open the display.
If your computer has an RJ45 port, disconnect the network cable by first unplugging the cable from your
Working on your computer 5
7. Press and hold the power button for few seconds, to ground the system board.
CAUTION: To guard against electrical shock unplug your computer from the electrical outlet before performing Step
# 8.
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.
8. Remove any installed ExpressCards or Smart Cards from the appropriate slots.
Safety precautions
The safety precautions chapter details the primary steps to be taken before performing any disassembly instructions.
Observe the following safety precautions before you perform any installation or break/fix procedures involving disassembly or reassembly:
• Turn off the system and all attached peripherals.
• Disconnect the system and all attached peripherals from AC power.
• Disconnect all network cables, telephone, and telecommunications lines from the system.
• Use an ESD field service kit when working inside any tabletnotebookdesktop to avoid electrostatic discharge (ESD) damage.
• After removing any system component, carefully place the removed component on an anti-static mat.
• Wear shoes with non-conductive rubber soles to reduce the chance of getting electrocuted.
Standby 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 on (wake on LAN) and suspended into a sleep
mode and has other advanced power management features.
Unplugging, pressing and holding the power button for 15 seconds should discharge residual power in the system board.
Bonding
Bonding is a method for connecting two or more grounding conductors to the same electrical potential. This is done through the use of a
field service electrostatic discharge (ESD) kit. When connecting a bonding wire, ensure that it is connected to bare metal and never to a
painted or non-metal surface. The wrist strap should be secure and in full contact with your skin, and ensure that you remove all jewelry
such as watches, bracelets, or rings prior to bonding yourself and the equipment.
Electrostatic discharge—ESD protection
ESD is a major concern when you handle electronic components, especially sensitive components such as expansion cards, processors,
memory DIMMs, and system boards. Very slight charges can damage circuits in ways that may not be obvious, such as intermittent
problems or a shortened product life span. As the industry pushes for lower power requirements and increased density, ESD protection is
an increasing concern.
Due to the increased density of semiconductors used in recent Dell products, the sensitivity to static damage is now higher than in
previous Dell products. For this reason, some previously approved methods of handling parts are no longer applicable.
Two recognized types of ESD damage are catastrophic and intermittent failures.
• Catastrophic – Catastrophic failures represent approximately 20 percent of ESD-related failures. The damage causes an immediate
and complete loss of device functionality. An example of catastrophic failure is a memory DIMM that has received a static shock and
immediately generates a "No POST/No Video" symptom with a beep code emitted for missing or nonfunctional memory.
• Intermittent – Intermittent failures represent approximately 80 percent of ESD-related failures. The high rate of intermittent failures
means that most of the time when damage occurs, it is not immediately recognizable. The DIMM receives a static shock, but the
tracing is merely weakened and does not immediately produce outward symptoms related to the damage. The weakened trace may
take weeks or months to melt, and in the meantime may cause degradation of memory integrity, intermittent memory errors, etc.
The more difficult type of damage to recognize and troubleshoot is the intermittent (also called latent or "walking wounded") failure.
Perform the following steps to prevent ESD damage:
• Use a wired ESD wrist strap that is properly grounded. The use of wireless anti-static straps is no longer allowed; they do not provide
adequate protection. Touching the chassis before handling parts does not ensure adequate ESD protection on parts with increased
sensitivity to ESD damage.
• Handle all static-sensitive components in a static-safe area. If possible, use anti-static floor pads and workbench pads.
6
Working on your computer
• When unpacking a static-sensitive component from its shipping carton, do not remove the component from the anti-static packing
material until you are ready to install the component. Before unwrapping the anti-static packaging, ensure that you discharge static
electricity from your body.
• Before transporting a static-sensitive component, place it in an anti-static container or packaging.
ESD field service kit
The unmonitored Field Service kit is the most commonly used service kit. Each Field Service kit includes three main components: antistatic mat, wrist strap, and bonding wire.
Components of an ESD field service kit
The components of an ESD field service kit are:
• Anti-Static Mat – The anti-static mat is dissipative and parts can be placed on it during service procedures. When using an antistatic mat, your wrist strap should be snug and the bonding wire should be connected to the mat and to any bare metal on the system
being worked on. Once deployed properly, service parts can be removed from the ESD bag and placed directly on the mat. ESDsensitive items are safe in your hand, on the ESD mat, in the system, or inside a bag.
• Wrist Strap and Bonding Wire – The wrist strap and bonding wire can be either directly connected between your wrist and bare
metal on the hardware if the ESD mat is not required, or connected to the anti-static mat to protect hardware that is temporarily
placed on the mat. The physical connection of the wrist strap and bonding wire between your skin, the ESD mat, and the hardware is
known as bonding. Use only Field Service kits with a wrist strap, mat, and bonding wire. Never use wireless wrist straps. Always be
aware that the internal wires of a wrist strap are prone to damage from normal wear and tear, and must be checked regularly with a
wrist strap tester in order to avoid accidental ESD hardware damage. It is recommended to test the wrist strap and bonding wire at
least once per week.
• ESD Wrist Strap Tester – The wires inside of an ESD strap are prone to damage over time. When using an unmonitored kit, it is a
best practice to regularly test the strap prior to each service call, and at a minimum, test once per week. A wrist strap tester is the
best method for doing this test. If you do not have your own wrist strap tester, check with your regional office to find out if they have
one. To perform the test, plug the wrist-strap's bonding-wire into the tester while it is strapped to your wrist and push the button to
test. A green LED is lit if the test is successful; a red LED is lit and an alarm sounds if the test fails.
• Insulator Elements – It is critical to keep ESD sensitive devices, such as plastic heat sink casings, away from internal parts that are
insulators and often highly charged.
• Working Environment – Before deploying the ESD Field Service kit, assess the situation at the customer location. For example,
deploying the kit for a server environment is different than for a desktop or portable environment. Servers are typically installed in a
rack within a data center; desktops or portables are typically placed on office desks or cubicles. Always look for a large open flat work
area that is free of clutter and large enough to deploy the ESD kit with additional space to accommodate the type of system that is
being repaired. The workspace should also be free of insulators that can cause an ESD event. On the work area, insulators such as
Styrofoam and other plastics should always be moved at least 12 inches or 30 centimeters away from sensitive parts before physically
handling any hardware components
• ESD Packaging – All ESD-sensitive devices must be shipped and received in static-safe packaging. Metal, static-shielded bags are
preferred. However, you should always return the damaged part using the same ESD bag and packaging that the new part arrived in.
The ESD bag should be folded over and taped shut and all the same foam packing material should be used in the original box that the
new part arrived in. ESD-sensitive devices should be removed from packaging only at an ESD-protected work surface, and parts
should never be placed on top of the ESD bag because only the inside of the bag is shielded. Always place parts in your hand, on the
ESD mat, in the system, or inside an anti-static bag.
• Transporting Sensitive Components – When transporting ESD sensitive components such as replacement parts or parts to be
returned to Dell, it is critical to place these parts in anti-static bags 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 from all insulator parts while
performing service and that they use anti-static bags for transporting sensitive components.
Transporting sensitive components
When transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place these parts in
anti-static bags for safe transport.
Lifting equipment
Adhere to the following guidelines when lifting heavy weight equipment:
Working on your computer
7
CAUTION: Do not lift greater than 50 pounds. Always obtain additional resources or use a mechanical lifting device.
1. Get a firm balanced footing. Keep your feet apart for a 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 with your legs, not your back.
4. Keep the load close. The closer it is to your spine, the less force it exerts on your back.
5. Keep your back upright, whether lifting or setting down the load. Do not add the weight of your body to the load. Avoid twisting your
body and back.
6. Follow the same techniques in reverse to set the load down.
After working inside your computer
After you complete any replacement procedure, ensure that you connect any external devices, cards, and cables before turning on your
computer.
CAUTION: To avoid damage to the computer, use only the battery designed for this particular Dell computer. Do not use
batteries designed for other Dell computers.
1. Connect any external devices, such as a port replicator or media base, and replace any cards, such as an ExpressCard.
2. Connect any telephone or network cables to your computer.
CAUTION: To connect a network cable, first plug the cable into the network device and then plug it into the
computer.
3. Connect your computer and all attached devices to their electrical outlets.
4. Turn on your computer.
8
Working on your computer
Technology and components
This chapter details the technology and components available in the system.
Topics:
• Power supply specifications
• Power adapter
• Video specifications
• Audio specifications
• Display specifications
• Keyboard specifications
• Battery
• Storage specifications
Power supply specifications
Table 1. Power supply
Features Specification
Input Voltage 100 – 240 VAC
2
Input frequency 50 – 60 Hz
Type 130 W AC Adapter
Power adapter
Table 2. Power adapter specifications
Features Specification
Type
Input Voltage 100 to 240 VAC
Adapter size Height:22 mm (0.86 inches)
Input frequency 50 Hz to 60 Hz
Output current
Rated output voltage 19.5 VDC
Temperature range (Operating) 0° to 40° C (32° to 104° F)
130W adapter
Width:66 mm (2.59 inches)
Depth:143 mm (5.62 inches)
130 W - 6.67 A (continuous)
Temperature range (Non-Operating) 40° to 70° C (-40° to 158° F)
Technology and components 9
Video specifications
Table 3. Video
Controller Type CPU Dependency Graphics memory
Integrated Intel UHD
630
Nvidia Quadro
T1000 w/4GB
GDDR5
Nvidia Quadro
T2000 w/4GB
GDDR5
GFX Intel HD GFX Integrated Shared system
Discrete Intel Xeon E-2276M GDDR5 4 GB HDMI 2.0
Discrete
Intel Xeon E-2276M
type
GDDR5 4 GB HDMI 2.0
Capacity External display
memory
Audio specifications
Table 4. Audio specifications
Features Specification
Controller Waves MaxxAudio Pro
Type Integrated
Interface • High-quality speakers
• Dual-array microphones
support
HDMI 2.0
Display specifications
Table 5. Display specifications
Features Specification
Type • UltraSharp FHD IGZO4, 1920x1080, AG, NT, W/Prem Panel
Guar, 100% sRGB color gamut, Titan Gray.
UltraSharp FHD IGZO4, 1920x1080, AG, NT, w/Prem Panel
Guar, 100% sRGB color gamut, Platinum Silver.
15.6" Ultrasharp UHD IGZO4, 3840x2160, Touch, w/Prem
Panel Guar, 100% Adobe color gamut, Titan Gray.
15.6" Ultrasharp UHD IGZO4, 3840x2160, Touch, w/Prem
Panel Guar, 100% Adobe color gamut, Platinum Silver.
15.6" Ultrasharp OLED UHD, 3840x2160, non-touch, w/Prem
Panel Guar, 100% DCI-P3 color gamut, Titan Gray
• 15.6" Ultrasharp OLED UHD, 3840x2160, non-touch, w/Prem
Panel Guar, 100% DCI-P3 color gamut, Platinum Silver.
• OLED Panel
Active Matrix Organic Light Emitting Diode (AMOLED) panel
Color Depth: 8 bit+2 bit FRC
Color Gamut: DCI-P3 Typ.100%
Response Time: 1ms
Interface type: eDP1.4b + PSR2 (4lane)
10 Technology and components
Features Specification
Polarizer type: Anti Glare
Display Mode: Wide view angle: 80/80/80/80 for U/D/L/R (Min)
Height (Active area) • FHD - 194.5 mm (7.66 inches)
• UHD - 194.5 mm (7.66 inches)
Width (Active area) • FHD - 345.6 mm (13.61 inches)
• UHD - 345.6 mm (13.55 inches)
Diagonal • FHD - 396.52 mm (15.61 inches)
• UHD - 396.52 mm (15.61 inches)
Megapixels • FHD - 2.07
• UHD - 8.29
Pixels Per Inch (PPI) • FHD - 141
• UHD - 282
• UHD - 3840 x 2160
Contrast ratio • FHD - 1500:1
• UHD - 1500:1
• OLED - 100,000:1
Refresh rate 60 Hz
Horizontal viewing angle (min) +/- 89 degrees
Vertical viewing angle (min) +/- 89 degrees
Pixel pitch • FHD - 0.18 mm
• UHD - 0.09 mm
Power consumption (max) • 4.22 W (FHD 100% sRGB color gamut )
• 9.23 W (UHD Adobe 100% color gamut)
• 4.3 W (OLED UHD 100% color gamut, Titan Gray)
• 14.8 (OLED UHD 100% color gamut, Platinum Silver)
Keyboard specifications
Table 6. Keyboard specifications
Features Specification
Number of keys • 80 (U.S. and Canada)
• 81 (Europe)
• 84 (Japan)
Size Full sized
• X= 19.05 mm key pitch
• Y= 18.05 mm key pitch
Backlit keyboard
Layout QWERTY
Easy enable/disable via hotkey <Fn+F10 Key> variable brightness
levels
Technology and components 11
Battery
NOTE: 97 WHr battery is not available with the 2.5 inch drives.
Table 7. Battery specifications
Features Specifications
Type • 56 WHr lithium-ion polymer 3 cell battery
• 97 WHr lithium-ion polymer 6 cell battery
Dimension 1. 56 WHr lithium-ion polymer
• Length: 223.2 mm (8.79 inch)
• Width: 71.8 mm (2.83 inch)
• Height: 7.2 mm (0.28 inch)
• Weight: 250.00 g (0.55 lb)
2. 97 WHr lithium-ion polymer
• Length: 332 mm (13.07 inch)
• Width: 96.0 mm (3.78 inch)
• Height: 7.7 mm (0.30 inch)
• Weight: 450.00 g (0.992 lb)
Weight (maximum) 450.00 g (0.992 lb)
Voltage • 56 WHr - 11.4 VDC
• 97 WHr - 11.4 VDC
Life span 300 discharge/recharge cycles
Charging time when the computer is off (approximate) 4 hours
Operating time Varies depending on operating conditions and can significantly
reduce under certain power-intensive conditions
Temperature range: Operating 0°C to 35°C (32°F to 95°F)
Temperature range: Storage -40°C to 65°C (-40°F to 149°F)
Coin-cell battery ML1220
Storage specifications
NOTE:
configurations
Table 8. Storage specifications
Storage specifications
2.5" 7mm 500GB 7200RPM SATA Hard Drive
2.5" 7mm 500GB 7200RPM SATA FIPS Hard Drive
The 2.5 inches drives are not available with the 97 WHr battery and are available only on 3 Cell 56 WHr battery
2.5" 7mm 1TB 7200RPM SATA Hard Drive
2.5" 7mm 2TB 5400RPM SATA Hard Drive
256GB M.2 NVMe PCIe SSD Class 40
12 Technology and components
Storage specifications
512GB M.2 NVMe PCIe SSD Class 40
1TB M.2 NVMe PCIe SSD Class 40
2TB M.2 NVMe PCIe SSD Class 40
512GB M.2 NVMe PCIe SED SSD Class 40
1TB M.2 NVMe PCIe SED SSD Class 40
512GB M.2 NVMe PCIe SSD Class 50
1TB M.2 NVMe PCIe SSD Class 50
Technology and components 13
3
Disassembly and reassembly
Disassembly and reassembly
Base cover
Installing the Base Cover
1. Place the base cover on the computer and snap it in place.
2. Tighten the M2x3 T5 (10), M2x8 (2) screws to secure the base cover to the computer.
NOTE: Ensure you use a Torx #5 screwdriver for the base screws and a Philips screwdriver for the two M2x8 system
badge screws.
3. Turn the system badge flap over and snap it in place.
4. Follow the procedures in After Working Inside Your Computer.
Removing the Base Cover
1. Follow the procedures in Before Working Inside Your Computer.
2. Close the display and turn the computer over.
3. Turn the system badge flap over and then remove the M2x3 T5 (10), M2x8.5 (2) screws that secure the base cover to the computer
[1,2].
NOTE:
badge flap.
Use a Torx #5 screwdriver for the base screws and a Philips screwdriver for the two M2x8.5 screws inside the
4. Pry the edges of the base cover and lift it to remove it from the computer.
14 Disassembly and reassembly
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 from the system to allow the battery to drain.
• 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.
• Ensure any screws during the servicing of this product are not lost or misplaced, to prevent accidental puncture or
damage to the battery and other system components.
• If the battery gets stuck inside your computer as a result of swelling, do not try to release it as puncturing, bending,
or crushing a lithium-ion battery can be dangerous. In such an instance, contact Dell technical support for
assistance. See www.dell.com/contactdell.
• Always purchase genuine batteries from www.dell.com or authorized Dell partners and resellers.
Removing the Battery
NOTE:
the A/C adapter from the system (while the system is turned on) to allow the system to drain the battery.
NOTE: System shipped with 3-Cell battery has 4 screws, the hard drive will be part of the configuration (Optional).
1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the base cover
3. Perform the following steps to remove the battery:
a) Disconnect the battery cable from the system board [1].
b) Remove the M2x4 (7) screws that secure the battery to the computer [2].
c) Lift the battery off the computer [3].
• Do not apply pressure to the surface of the battery
Discharge the battery as much as possible before removing from the system. This can be done by disconnecting
Disassembly and reassembly
15
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