Dell Inspiron 3655 User Manual
Inspiron 3655
Service Manual
Computer Model: Inspiron 3655
Regulatory Model: D20M
Regulatory Type: D20M001
Notes, cautions, and
warnings
NOTE: A NOTE indicates important information that helps
you make better use of your computer.
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.
© 2016 Dell Inc. All rights reserved. This product is protected by U.S. and
international copyright and intellectual property laws. Dell and the Dell
logo are trademarks of Dell Inc. in the United States and/or other
jurisdictions. All other marks and names mentioned herein may be
trademarks of their respective companies.
2016 - 08
Rev. A01
Contents
Before working inside your computer............. 8
Before you begin ................................................................. 8
Safety instructions................................................................ 9
Recommended tools..........................................................10
After working inside your computer...............11
Technical overview............................................ 12
System Board Components............................................... 12
Removing the computer cover .......................14
Procedure............................................................................14
Replacing the computer cover ....................... 16
Procedure............................................................................16
Removing the front bezel ................................ 17
Prerequisites........................................................................ 17
Procedure............................................................................17
Replacing the front bezel................................. 19
Procedure............................................................................19
Post-requisites.................................................................... 19
Removing the memory modules.....................20
Prerequisites....................................................................... 20
Procedure............................................................................21
3
Replacing the memory modules..................... 23
Procedure........................................................................... 23
Post-requisites....................................................................25
Removing the 3.5-inch hard drive.................. 26
Prerequisites....................................................................... 26
Procedure........................................................................... 26
Replacing the 3.5-inch hard drive...................31
Procedure............................................................................31
Post-requisites.................................................................... 31
Removing the 2.5-inch hard drives................ 32
Prerequisites........................................................................32
Procedure........................................................................... 33
Replacing the 2.5-inch hard drives.................36
Procedure........................................................................... 36
Post-requisites....................................................................36
Replacing the optical drive...............................37
Prerequisites........................................................................37
Procedure........................................................................... 38
Removing the optical drive..............................42
Procedure........................................................................... 42
Post-requisites....................................................................42
Removing the processor fan............................43
Prerequisites....................................................................... 43
Procedure........................................................................... 44
4
Replacing the processor fan............................46
Procedure........................................................................... 46
Post-requisites....................................................................46
Removing the heat sink.................................... 47
Prerequisites........................................................................47
Procedure........................................................................... 47
Replacing the heat sink.................................... 49
Procedure........................................................................... 49
Post-requisites....................................................................49
Removing the coin-cell battery...................... 50
Prerequisites....................................................................... 50
Procedure............................................................................51
Replacing the coin-cell battery.......................53
Procedure........................................................................... 53
Post-requisites....................................................................53
Removing the wireless card.............................54
Prerequisites....................................................................... 54
Procedure........................................................................... 55
Replacing the wireless card..............................57
Procedure............................................................................57
Post-requisites....................................................................58
Removing the antenna modules..................... 59
Prerequisites....................................................................... 59
Procedure........................................................................... 59
5
Replacing the antenna modules..................... 62
Procedure........................................................................... 62
Post-requisites....................................................................62
Removing the power-button module............63
Prerequisites....................................................................... 63
Procedure........................................................................... 64
Replacing the power-button module............66
Procedure........................................................................... 66
Post-requisites....................................................................66
Removing the chassis fan................................. 67
Prerequisites........................................................................67
Procedure........................................................................... 68
Replacing the chassis fan..................................71
Procedure............................................................................71
Post-requisites.................................................................... 71
Removing the system board............................ 72
Prerequisites........................................................................72
Procedure............................................................................72
Replacing the system board.............................75
Procedure............................................................................75
Post-requisites.................................................................... 75
6
BIOS setup program...........................................77
Overview............................................................................. 77
Entering BIOS setup program.............................................77
Clearing Forgotten Passwords...........................................78
Prerequisites..................................................................78
Procedure......................................................................78
Post-requisites.............................................................. 79
Clearing CMOS Settings..................................................... 79
Prerequisites................................................................. 80
Procedure..................................................................... 80
Post-requisites..............................................................80
Flashing the BIOS...............................................82
Getting help and contacting Dell....................83
Self-help resources............................................................ 83
Contacting Dell.................................................................. 84
7
Before working inside your computer
NOTE: The images in this document may differ from your computer
depending on the configuration you ordered.
Before you begin
1 Save and close all open files and exit all open applications.
2 Shut down your computer.
The shut-down instruction varies depending on the operating system
installed on your computer.
– Windows 10: Click Start → Power → Shut down.
– Windows 8.1: On the Start screen, click the power icon → Shut
down.
– Windows 7: Click Start → 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.
4 Disconnect all cables such as telephone cables, network cables, and so
on, from your computer.
5 Disconnect all attached devices and peripherals, such as keyboard,
mouse, monitor, and so on, from your computer.
6 Remove any media card and optical disc from your computer, if
applicable.
7 After the computer is unplugged, press and hold the power button for 5
seconds to ground the system board.
8
Safety instructions
Use the following safety guidelines to protect your computer from potential
damage and ensure your personal safety.
WARNING: Before working inside your computer, read the safety
information that shipped with your computer. For more safety best
practices, see the Regulatory Compliance home page at
www.dell.com/regulatory_compliance.
WARNING: Disconnect all power sources before opening the
computer cover or panels. After you finish working inside the
computer, replace all covers, panels, and screws before connecting to
the electrical outlet.
CAUTION: To avoid damaging the computer, ensure that the work
surface is flat and clean.
CAUTION: To avoid damaging the components and cards, handle
them by their edges, and avoid touching pins and 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 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 on its connector or on
its pull tab, not on 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 any connector pins. When connecting
cables, ensure that the ports and connectors are correctly oriented
and aligned.
9
CAUTION: Press and eject any installed card from the media-card
reader.
Recommended tools
The procedures in this document may require the following tools:
• Phillips screwdriver
• Plastic scribe
10
After working inside your computer
CAUTION: Leaving stray or loose screws inside your computer may
severely damage your computer.
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.
11
Technical overview
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in
Before working inside your computer. After working inside your
computer, follow the instructions in After working inside your
computer. For more safety best practices, see the Regulatory
Compliance home page at
System Board Components
www.dell.com/regulatory_compliance.
1 PCI-e x1 slot 2 processor
3 hard-drive cable connector 4 wireless-card connector
5 optical-drive/hard-drive 2 cable
connector
12
6 processor-fan cable connector
7 drive power-cable connector 8 CMOS jumper
9 Password jumper 10 power-button cable connector
11 coin-cell battery 12 memory-module slots
13 chassis-fan cable connector
13
Removing the computer cover
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in
Before working inside your computer. After working inside your
computer, follow the instructions in After working inside your
computer. For more safety best practices, see the Regulatory
Compliance home page at
Procedure
1 Lay the computer on its side with the vents facing up.
2 Remove the screws that secure the cover to the chassis.
www.dell.com/regulatory_compliance.
14
3 Slide the cover toward the back of the computer and lift the cover off the
chassis.
1 computer cover 2 chassis
3 screws (2)
15
Replacing the computer cover
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in
Before working inside your computer. After working inside your
computer, follow the instructions in After working inside your
computer. For more safety best practices, see the Regulatory
Compliance home page at
Procedure
1 Align the cover over the chassis and slide it toward the front of the
computer.
2 Replace the screws that secure the computer cover to the chassis.
www.dell.com/regulatory_compliance.
16
Removing the front bezel
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in
Before working inside your computer. After working inside your
computer, follow the instructions in After working inside your
computer. For more safety best practices, see the Regulatory
Compliance home page at
Prerequisites
Remove the computer cover.
Procedure
1 Place the computer in an upright position.
2 Release the front-bezel tabs by moving them outward.
www.dell.com/regulatory_compliance.
17
3 Gently rotate and pull the front bezel away from the chassis.
18
1 chassis 2 front-bezel tabs
3 front bezel
Replacing the front bezel
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in
Before working inside your computer. After working inside your
computer, follow the instructions in After working inside your
computer. For more safety best practices, see the Regulatory
Compliance home page at
Procedure
1 Align and insert the tabs on the front bezel into the slots on the front
panel.
2 Rotate the front bezel towards the chassis until the front-bezel tabs snap
into place.
Post-requisites
Replace the computer cover.
www.dell.com/regulatory_compliance.
19
Removing the memory modules
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in
Before working inside your computer. After working inside your
computer, follow the instructions in After working inside your
computer. For more safety best practices, see the Regulatory
Compliance home page at www.dell.com/regulatory_compliance.
Prerequisites
1 Remove the computer cover.
2 Remove the front bezel.
20
Procedure
1 Open the side-chassis.
1 side-chassis
2 Using the fingertips, spread apart the securing clip at each end of the
memory-module slot until the memory module pops up.
21
3 Lift the memory module out of the memory-module slot.
NOTE: If the memory module is difficult to remove, gently ease the
memory module back and forth to remove it from the slot.
CAUTION: To prevent damage to the memory module, hold the
memory module by the edges. Do not touch the components on
the memory module.
22
1 securing clip 2 memory-module slot
3 memory module
Replacing the memory modules
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in
Before working inside your computer. After working inside your
computer, follow the instructions in After working inside your
computer. For more safety best practices, see the Regulatory
Compliance home page at www.dell.com/regulatory_compliance.
Procedure
1 Ensure that the securing clips are extended away from the memory-
module slot.
2 Align the notch on the memory module with the tab on the memory-
module slot.
23
3 Insert the memory module into the memory-module slot and press the
memory module down until it snaps into position and the securing clips
lock in place.
1 memory module 2 memory-module slot
3 notch 4 tab
5 securing clip
4 Close the side-chassis.
24
Post-requisites
1 Replace the front bezel.
2 Replace the computer cover.
25
Removing the 3.5-inch hard drive
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in
Before working inside your computer. After working inside your
computer, follow the instructions in After working inside your
computer. For more safety best practices, see the Regulatory
Compliance home page at www.dell.com/regulatory_compliance.
Prerequisites
1 Remove the computer cover.
2 Remove the front bezel.
Procedure
1 Remove the screw that secures the hard-drive assembly to the side-
chassis.
26
Loading...