Dell Inspiron M421R (Late 2012) User Manual

Dell Inspiron 14R/M421ROwner’s ManualComputer model: Inspiron 5420/7420/5425 Regulatory model: P33G Regulatory type: P33G00

9 | Before You Begin WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional saf

99 | Removing the System BoardProcedure NOTE: Your computer’s Service Tag is stored in the system board. You must enter the Service Tag in the BIOS

Removing the System Board | 1003 Lift the system board at an angle and release the connectors on the system board from the slots on the computer

101 | Removing the System Boardbook.book Page 101 Friday, September 7, 2012 10:23 AM

Replacing the System Board | 10243Replacing the System Board WARNING: Before working inside your computer, read the safety information that sh

103 | Replacing the System BoardEntering the Service Tag in the BIOS1 Turn on the computer.2 Press <F2> during POST to enter the system setup

Removing the Processor Heat-Sink | 10444Removing the Processor Heat-Sink WARNING: Before working inside your computer, read the safety informa

105 | Removing the Processor Heat-SinkProcedure1 Turn the system-board assembly over.2 In sequential order (indicated on the processor heat-sink), l

Replacing the Processor Heat-Sink | 10645Replacing the Processor Heat-Sink WARNING: Before working inside your computer, read the safety infor

107 | Replacing the Processor Heat-Sinkbook.book Page 107 Friday, September 7, 2012 10:23 AM

Flashing the BIOS | 10846Flashing the BIOSThe BIOS may require flashing when an update is available or when replacing the system board. To flash

After Working Inside Your Computer | 103After Working Inside Your ComputerAfter you complete replacement procedures, ensure the following:• Repl

109 | Flashing the BIOSbook.book Page 109 Friday, September 7, 2012 10:23 AM

11 | After Working Inside Your Computerbook.book Page 11 Friday, September 7, 2012 10:23 AM

Removing the Switch | 124Removing the Switch WARNING: Before working inside your computer, read the safety information that shipped with your comp

13 | Removing the Switchbook.book Page 13 Friday, September 7, 2012 10:23 AM

Replacing the Switch | 145Replacing the Switch WARNING: Before working inside your computer, read the safety information that shipped with your co

15 | Replacing the Switchbook.book Page 15 Friday, September 7, 2012 10:23 AM

Removing the Battery | 166Removing the Battery WARNING: Before working inside your computer, read the safety information that shipped with your co

17 | Removing the Batterybook.book Page 17 Friday, September 7, 2012 10:23 AM

Replacing the Battery | 187Replacing the Battery WARNING: Before working inside your computer, read the safety information that shipped with your

Notes, Cautions, and Warnings NOTE: A NOTE indicates important information that helps you make better use of your computer. CAUTION: A CAUTION indi

19 | Replacing the Batterybook.book Page 19 Friday, September 7, 2012 10:23 AM

Removing the Keyboard | 208Removing the Keyboard WARNING: Before working inside your computer, read the safety information that shipped with your

21 | Removing the KeyboardProcedure CAUTION: The keycaps on the keyboard are fragile, easily dislodged, and time-consuming to replace. Be careful w

Removing the Keyboard | 223 Carefully turn the keyboard over and place it on the palm rest. 4 Lift the connector latches and pull the pull-tabs to d

23 | Removing the Keyboardbook.book Page 23 Friday, September 7, 2012 10:23 AM

Replacing the Keyboard | 249Replacing the Keyboard WARNING: Before working inside your computer, read the safety information that shipped with you

25 | Replacing the Keyboardbook.book Page 25 Friday, September 7, 2012 10:23 AM

Removing the Base Cover | 2610Removing the Base Cover WARNING: Before working inside your computer, read the safety information that shipped with

27 | Removing the Base Coverbook.book Page 27 Friday, September 7, 2012 10:23 AM

Replacing the Base Cover | 2811Replacing the Base Cover WARNING: Before working inside your computer, read the safety information that shipped wit

Contents | 2Contents1 Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . 8Turn Off Your Computer and Connected Devices . . . 8Safet

29 | Replacing the Base Coverbook.book Page 29 Friday, September 7, 2012 10:23 AM

Removing the Memory Module(s) | 3012Removing the Memory Module(s) WARNING: Before working inside your computer, read the safety information that s

31 | Removing the Memory Module(s)book.book Page 31 Friday, September 7, 2012 10:23 AM

Replacing the Memory Module(s) | 3213Replacing the Memory Module(s) WARNING: Before working inside your computer, read the safety information that

33 | Replacing the Memory Module(s)Postrequisites1 Replace the base cover. See "Replacing the Base Cover" on page 28.2 Replace the battery

Removing the Hard Drive | 3414Removing the Hard Drive WARNING: Before working inside your computer, read the safety information that shipped w

35 | Removing the Hard DriveProcedure1 Pull the pull-tab to disconnect the hard-drive cable from the system-board connector.2 Remove the screws tha

Removing the Hard Drive | 365 Pull the interposer to disconnect the hard-drive cable from the hard-drive.6 Remove the screws that secure the hard-dr

37 | Removing the Hard Drivebook.book Page 37 Friday, September 7, 2012 10:23 AM

Replacing the Hard Drive | 3815Replacing the Hard Drive WARNING: Before working inside your computer, read the safety information that shipped

3 | Contents11 Removing the Memory Module(s). . . . . . . . . . 30Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Procedure

39 | Replacing the Hard Drivebook.book Page 39 Friday, September 7, 2012 10:23 AM

Removing the Optical Drive | 4016Removing the Optical Drive WARNING: Before working inside your computer, read the safety information that shipped

41 | Removing the Optical Drive3 Carefully pry the optical-drive bezel and remove it from the optical-drive assembly.4 Remove the screws that secure

Replacing the Optical Drive | 4217Replacing the Optical Drive WARNING: Before working inside your computer, read the safety information that shipp

43 | Replacing the Optical Drivebook.book Page 43 Friday, September 7, 2012 10:23 AM

Removing the Palm Rest | 4418Removing the Palm Rest WARNING: Before working inside your computer, read the safety information that shipped wit

45 | Removing the Palm Rest3 Turn the computer over and open the display as far as possible.4 Lift the connector latches and pull the pull-tabs to d

Removing the Palm Rest | 466 Make a note of the display cable routing and remove the cable from the routing guides on the palm rest.7 Remove the scr

47 | Removing the Palm Restbook.book Page 47 Friday, September 7, 2012 10:23 AM

Replacing the Palm Rest | 4819Replacing the Palm Rest WARNING: Before working inside your computer, read the safety information that shipped w

Contents | 421 Removing the Power-Adapter Port . . . . . . . . 54Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . 54Procedur

49 | Replacing the Palm Restbook.book Page 49 Friday, September 7, 2012 10:23 AM

Removing the Mini-Card | 5020Removing the Mini-Card WARNING: Before working inside your computer, read the safety information that shipped with yo

51 | Removing the Mini-Card3 Lift the Mini-Card out of the system-board connector. CAUTION: When the Mini-Card is not in the computer, store it in

Replacing the Mini-Card | 5221Replacing the Mini-Card WARNING: Before working inside your computer, read the safety information that shipped with

53 | Replacing the Mini-CardPostrequisites1 Replace the palm rest. See "Replacing the Palm Rest" on page 48.2 Replace the keyboard. See &q

Removing the Power-Adapter Port | 5422Removing the Power-Adapter Port WARNING: Before working inside your computer, read the safety informatio

55 | Removing the Power-Adapter Portbook.book Page 55 Friday, September 7, 2012 10:23 AM

Replacing the Power-Adapter Port | 5623Replacing the Power-Adapter Port WARNING: Before working inside your computer, read the safety information

57 | Replacing the Power-Adapter Portbook.book Page 57 Friday, September 7, 2012 10:23 AM

Removing the Coin-Cell Battery | 5824Removing the Coin-Cell Battery WARNING: Before working inside your computer, read the safety information

5 | Contents31 Removing the Display Bezel . . . . . . . . . . . . . . 76Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . 76Pr

59 | Removing the Coin-Cell BatteryProcedure1 Turn the system board over.2 Using a plastic scribe, gently pry the coin-cell battery out of the batte

Replacing the Coin-Cell Battery | 6025Replacing the Coin-Cell Battery WARNING: Before working inside your computer, read the safety information th

61 | Replacing the Coin-Cell Batterybook.book Page 61 Friday, September 7, 2012 10:23 AM

Removing the Fan | 6226Removing the Fan WARNING: Before working inside your computer, read the safety information that shipped with your computer

63 | Removing the Fanbook.book Page 63 Friday, September 7, 2012 10:23 AM

Replacing the Fan | 6427Replacing the Fan WARNING: Before working inside your computer, read the safety information that shipped with your compute

65 | Replacing the Fanbook.book Page 65 Friday, September 7, 2012 10:23 AM

Removing the Speakers | 6628Removing the Speakers WARNING: Before working inside your computer, read the safety information that shipped with your

67 | Removing the Speakersbook.book Page 67 Friday, September 7, 2012 10:23 AM

Replacing the Speakers | 6829Replacing the Speakers WARNING: Before working inside your computer, read the safety information that shipped with yo

Contents | 641 Removing the System Board . . . . . . . . . . . . . . 98Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . 98Proc

69 | Replacing the Speakersbook.book Page 69 Friday, September 7, 2012 10:23 AM

Removing the Display Assembly | 7030Removing the Display Assembly WARNING: Before working inside your computer, read the safety information that s

71 | Removing the Display Assembly3 Turn the computer over and open the display as far as possible.4 Disconnect the antenna cables from the connecto

Removing the Display Assembly | 725 Remove the screws that secure the display assembly to the computer base.6 Lift the display assembly off the comp

73 | Removing the Display Assemblybook.book Page 73 Friday, September 7, 2012 10:23 AM

Replacing the Display Assembly | 7431Replacing the Display Assembly WARNING: Before working inside your computer, read the safety information

75 | Replacing the Display Assemblybook.book Page 75 Friday, September 7, 2012 10:23 AM

Removing the Display Bezel | 7632Removing the Display Bezel WARNING: Before working inside your computer, read the safety information that shi

77 | Removing the Display Bezelbook.book Page 77 Friday, September 7, 2012 10:23 AM

Replacing the Display Bezel | 7833Replacing the Display Bezel WARNING: Before working inside your computer, read the safety information that shipp

7 | Contentsbook.book Page 7 Friday, September 7, 2012 10:23 AM

79 | Replacing the Display Bezelbook.book Page 79 Friday, September 7, 2012 10:23 AM

Removing the Display Panel | 8034Removing the Display Panel WARNING: Before working inside your computer, read the safety information that shi

81 | Removing the Display Panel2 Carefully lift the display panel and turn it over.3 Peel and lift the tape that secures the display cable to the di

Replacing the Display Panel | 8235Replacing the Display Panel WARNING: Before working inside your computer, read the safety information that shipp

83 | Replacing the Display Panelbook.book Page 83 Friday, September 7, 2012 10:23 AM

Removing the Display Hinges | 8436Removing the Display Hinges WARNING: Before working inside your computer, read the safety information that shipp

85 | Removing the Display Hinges3 Turn the display assembly over.4 Remove the screws that secure the display hinges to the display cover.5 Lift

Replacing the Display Hinges | 8637Replacing the Display Hinges WARNING: Before working inside your computer, read the safety information that shi

87 | Replacing the Display Hingesbook.book Page 87 Friday, September 7, 2012 10:23 AM

Removing the Camera Module | 8838Removing the Camera Module WARNING: Before working inside your computer, read the safety information that shi

Before You Begin | 82Before You BeginTurn Off Your Computer and Connected Devices CAUTION: To avoid losing data, save and close all open files

89 | Removing the Camera Module2 Turn the camera module over.3 Peel and lift the tape that secures the camera cable to the camera module.1 tape 2 ca

Removing the Camera Module | 904 Disconnect the camera cable from the connector on the camera module.1 camera cable connector 2 camera module3 camer

91 | Removing the Camera Modulebook.book Page 91 Friday, September 7, 2012 10:23 AM

Replacing the Camera Module | 9239Replacing the Camera Module WARNING: Before working inside your computer, read the safety information that s

93 | Replacing the Camera Modulebook.book Page 93 Friday, September 7, 2012 10:23 AM

Removing the Processor | 9440Removing the Processor WARNING: Before working inside your computer, read the safety information that shipped with yo

95 | Removing the ProcessorProcedure1 To loosen the ZIF socket, use a small, flat-blade screwdriver and rotate the ZIF-socket cam screw counterclock

Replacing the Processor | 9641Replacing the Processor WARNING: Before working inside your computer, read the safety information that shipped with

97 | Replacing the Processor11 Replace the battery. See "Replacing the Battery" on page 18.12 Follow the instructions in "After Worki

Removing the System Board | 9842Removing the System Board WARNING: Before working inside your computer, read the safety information that shipp