Dell 8D1P4 Specification Sheet

Latitude 7310

Service Manual

1.0.0.0

Regulatory Model: P33S and P34S

Regulatory Type: P33S001 and P34S001

May 2020

Rev. A00

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.

© 2020 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.

Contents

1 Working on your computer............................................................................................................	5
Safety instructions................................................................................................................................................................	5
Working inside your computer.......................................................................................................................................	5
After working inside your computer..............................................................................................................................	7
2 Removing and installing components.............................................................................................	8
Recommended tools..............................................................................................................................................................	8
Screw list................................................................................................................................................................................	8
Base cover..............................................................................................................................................................................	9
Removing the base cover...............................................................................................................................................	9
Installing the base cover................................................................................................................................................	12
Battery...................................................................................................................................................................................	14
Lithium-ion battery precautions...................................................................................................................................	14
Removing the battery....................................................................................................................................................	14
Installing the battery......................................................................................................................................................	15
Solid-state drive...................................................................................................................................................................	16
Removing the solid state drive.....................................................................................................................................	16
Installing the solid state drive........................................................................................................................................	18
WWAN card..........................................................................................................................................................................	21
Removing the WWAN card...........................................................................................................................................	21
Installing the WWAN card.............................................................................................................................................	22
WLAN antennae bracket....................................................................................................................................................	23
Removing the WLAN antenna bracket.......................................................................................................................	23
Installing the WLAN antenna bracket.........................................................................................................................	24
Palmrest antenna (Optional)..............................................................................................................................................	25
Removing the Palmrest antenna (optional)...............................................................................................................	25
Installing the Palmrest antenna (optional)..................................................................................................................	26
Heatsink assembly...............................................................................................................................................................	27
Removing the heatsink assembly.................................................................................................................................	27
Installing the heatsink assembly...................................................................................................................................	28
Display assembly..................................................................................................................................................................	30
Removing the display assembly...................................................................................................................................	30
Installing the display assembly......................................................................................................................................	31
Speakers...............................................................................................................................................................................	32
Removing the speaker..................................................................................................................................................	32
Installing the speaker.....................................................................................................................................................	33
Smart card reader...............................................................................................................................................................	34
Removing the smart card reader.................................................................................................................................	34
Installing the smart card reader...................................................................................................................................	35
I/O board..............................................................................................................................................................................	36
Removing the I/O board...............................................................................................................................................	36
Installing the I/O board.................................................................................................................................................	37
Power button with fingerprint reader...............................................................................................................................	38
Removing the power button with fingerprint reader................................................................................................	38

Contents 3

Installing the power button with fingerprint reader..................................................................................................	39
System board.......................................................................................................................................................................	40
Removing the system board........................................................................................................................................	40
Installing the system board............................................................................................................................................	41
Keyboard...............................................................................................................................................................................	42
Removing the keyboard................................................................................................................................................	42
Installing the keyboard..................................................................................................................................................	44
Palmrest assembly...............................................................................................................................................................	46
Removing the palmrest assembly................................................................................................................................	46
Installing the palmrest assembly..................................................................................................................................	46
3 Troubleshooting.........................................................................................................................	48
Recovering the operating system.....................................................................................................................................	48
Dell SupportAssist Pre-boot System Performance Check diagnostics........................................................................	48
Running the SupportAssist Pre-Boot System Performance Check.......................................................................	48
Validation Tools .............................................................................................................................................................	49
System diagnostic lights.....................................................................................................................................................	55
Flashing BIOS (USB key)...................................................................................................................................................	56
Flashing the BIOS................................................................................................................................................................	57
Backup media and recovery options.................................................................................................................................	57
WiFi power cycle..................................................................................................................................................................	57
LCD Built-in Self Test ........................................................................................................................................................	57
BIOS recovery......................................................................................................................................................................	58
BIOS recovery using hard drive...................................................................................................................................	58
BIOS recovery using USB drive...................................................................................................................................	59
M-BIST.................................................................................................................................................................................	59
RTC reset and Flea power release....................................................................................................................................	60
4 Getting help and contacting Dell..................................................................................................	61

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 you have read the safety information that shipped with your computer.

NOTE: Before working inside your computer, read the safety information that is shipped with your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance.

NOTE: Disconnect your computer from 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 your computer to an electrical outlet.

CAUTION: To avoid damaging the computer, ensure that the work surface is flat, dry and clean.

CAUTION: To avoid damaging the components and cards, handle them by their edges, and avoid touching the pins and the contacts.

CAUTION: You should only perform troubleshooting and repairs as authorized or directed by the Dell technical assistance team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. See the safety instructions that is shipped with the product or at www.dell.com/regulatory_compliance.

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.

CAUTION: When you disconnect a cable, pull it by its connector or its pull tab, not the cable itself. Some cables have connectors with locking tabs or thumb-screws that you must disengage before disconnecting the cable. When disconnecting cables, keep them evenly-aligned to avoid bending the connector pins. When connecting cables, ensure that the ports and the connectors are correctly oriented and aligned.

CAUTION: Press and eject any installed card from the media-card reader.

NOTE: The color of your computer and certain components may appear differently than shown in this document.

Working inside your computer

Before working inside your computer

About this task

NOTE: The images in this document may differ from your computer depending on the configuration you ordered.

Steps

1.Save and close all open files and exit all open applications.

2.Shut down your computer. Click Start > Power > Shut down.

NOTE: If you are using a different operating system, see the documentation of your operating system for shut-down instructions.

3. Disconnect your computer and all attached devices from their electrical outlets.

Working on your computer

5

4.Disconnect all attached network devices and peripherals, such as keyboard, mouse, and monitor from your computer.

CAUTION: To disconnect a network cable, first unplug the cable from your computer and then unplug the cable from the network device.

5.Remove any media card and optical disc from your computer, if applicable.

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.

•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.

6 Working on your computer

•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.

After working inside your computer

About this task

CAUTION: Leaving stray or loose screws inside your computer may severely damage your computer.

Steps

1.Replace all screws and ensure that no stray screws remain inside your computer.

2.Connect any external devices, peripherals, or cables you removed before working on your computer.

3.Replace any media cards, discs, or any other parts that you removed before working on your computer.

4.Connect your computer and all attached devices to their electrical outlets.

5.Turn on your computer.

Working on your computer

7

2

Removing and installing components

Recommended tools

The procedures in this document require the following tools:

•Phillips #0 screwdriver

•Phillips #1 screwdriver

•Plastic scribe: Recommended for field technicians.

NOTE: The #0 screw driver is for screws 0-1 and the #1 screw driver is for screws 2-4.

Screw list

NOTE: When removing screws from a component, it is recommended to note the screw type, the quantity of screws, and then place them in a screw storage box. This is to ensure that the correct number of screws and correct screw type is restored when the component is replaced.

NOTE: Some computers have magnetic surfaces. Ensure that the screws are not left attached to such surface when replacing a component.

NOTE: Screw color may vary with the configuration ordered.

Table 1. Screw list

Component		Secured to		Screw type	Quantity		Screw image
1.	SSD thermal plate	1.	System board	M2x2	1.	1
2.	SSD	2.	System board		2.	1
3.	eDP bracket	3.	System board		3.	1
4.	Keyboard	4.	Keyboard support		4.	2
			bracket
1.	WLAN antenna	1.	System board	M2x2.5	1.	1
	bracket	2.	Palmrest assembly		2.	1
2.	Fan cage	3.	System board		3.	4
3.	Heatsink assembly	4.	System board		4.	2
4.	Wireless antenna	5.	Palmrest assembly		5.	1
	module	6.	Palmrest assembly		6.	1
5.	Fingerprint bracket
		7.	Palmrest assembly		7.	2
6.	I/O board (with FPR)
		8.	Palmrest assembly		8.	2
7.	I/O board (without
		9.	Palmrest assembly		9.	4
	FPR)
		10.	Palmrest assembly		10.	1
8.	Power button
		11.	Palmrest assembly		11.	2
9.	Smart card reader
10.	System board

8 Removing and installing components

Table 1. Screw list(continued)

Component		Secured to	Screw type	Quantity		Screw image
11.	Optional palmrest
	antenna
Hinges		Palmrest assembly	M2.5x4	4
F-beam FPC		I/O daughterboard	M2x3.5	2
USB Type-C bracket		System board	M2x5	3
Keyboard		Palmrest assembly	M1.6x2	_
1.	Carbon Fiber			1.	17
2.	Aluminum			2.	21

Base cover

Removing the base cover

Prerequisites

1. Follow the procedure in Before working inside your computer.

About this task

The following images indicate the location of the base cover and provide a visual representation of the removal procedure.

Removing and installing components

9

10 Removing and installing components

Removing and installing components

11

Steps

1.Loosen the eight captive screws that secure the base cover to the palmrest assembly.

2.Starting from the top-left corner, use a plastic scribe to pry the base cover outwards to release the base cover from the palm-rest assembly.

3.Pry the base cover and remove it from the palm-rest and keyboard assembly.

CAUTION: Do not slide the scribe through the edge of the top side of the base cover as it damages the latches inside the base cover.

4.Use the pull-tab and disconnect the battery from the system board.

Installing the base cover

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following images indicate the location of the base cover and provide a visual representation of the installation procedure.

12 Removing and installing components

Removing and installing components

13

Steps

1.Connect the battery cable to the system board.

2.Align the screw holes on the base cover with the screw holes on the palmrest assembly, and then snap the base cover into place.

3.Tighten the eight captive screws that secure the base cover to the palmrest assembly.

Next steps

1. 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 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

Prerequisites

1.Follow the procedure in Before working inside your computer.

2.Remove the: a. Base cover

About this task

The following images indicate the location of the battery and provide a visual representation of the removal procedure.

14 Removing and installing components

Steps

1.Using the pull tab, remove the battery cable from connector the system board.

2.Loosen the four captive screws that secure the base cover to the palmrest assembly.

3.Lift and remove the battery from the system unit.

Installing the battery

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following images indicate the location of the battery and provide a visual representation of the installation procedure.

Removing and installing components

15

Steps

1.Align the screw holes on the battery with the screw holes on the palmrest assembly, and then snap the battery into place.

2.Tighten the four captive screws that secure the battery to the palmrest assembly.

3.Replace the battery cable to connector on the system board.

Next steps

1.Install the:

a. Base cover.

2.Follow the procedure in After working inside your computer.

Solid-state drive

Removing the solid state drive

Prerequisites

1.Follow the procedure in Before working inside your computer.

2.Remove the: a. Base cover

About this task

The following images indicate the location of the solid state drive and provide a visual representation of the removal procedure.

16 Removing and installing components

Figure 1. 2230 SSD

Removing and installing components

17

Figure 2. 2280 SSD

Steps

1.Remove the single M2x2 screw that secures the SSD thermal plate to the system board and lift to remove it from over the SSD.

2.Remove the single M2x2 screw that secures the SSD to the system board.

3.Slide the SSD out from the M.2 slot on the system board.

Installing the solid state drive

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following images indicate the location of the solid state drive and provide a visual representation of the installation procedure.

18 Removing and installing components

Figure 3. 2230 SSD

Removing and installing components

19