Page 1 Dell Latitude 5420/E5420/E5420m Owner's Manual Notes, Cautions, and Warnings Working on Your Computer Battery PC Card Secure Digital (SD) Card Subscriber Identity Module (SIM) Card ExpressCard Back Panel Keyboard Trim Keyboard Optical Drive Hard Drive Wireless Local Area Network (WLAN) Card...
Page 2 Power Connector Modem Connector Thermal Fan Speaker Display Bezel Display Panel Display Hinges Camera Specifications System Setup Diagnostics Contacting Dell P16G 2011 — 07 A00...
Page 3 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Notes, Cautions, and Warnings NOTE: A NOTE indicates important information that helps you make better use of your computer. CAUTION: A CAUTION indicates potential damage to hardware or loss of data if instructions are not followed.
Page 4 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Working on Your Computer Before Working Inside Your Computer Recommended Tools Turning Off Your Computer After Working Inside Your Computer...
Page 5: Before Working Inside Your Computer
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.
Page 6 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.
Page 7 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. 11.
Page 8: Turning Off Your Computer
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Turning Off Your Computer CAUTION: To avoid losing data, save and close all open files and exit all open programs before you turn off your computer. 1. Shut down the operating system:...
Page 9 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Battery Removing the Battery Installing the Battery...
Page 10 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Battery 1. Follow the procedures in Before Working On Your Computer. 2. Slide the release latches to unlock the battery. 3. Remove the battery from the computer.
Page 11 Related tasks Installing the Battery...
Page 12: Installing The Battery
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Battery 1. Slide the battery back into the computer. The release latches automatically click into the lock position. 2. Follow the procedures in After Working Inside Your Computer. Related tasks...
Page 13: After Working Inside 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, battery slice, or media base, and replace any cards, such as an ExpressCard.
Page 14: Recommended Tools
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Recommended Tools The procedures in this document may require the following tools: Small flat-blade screwdriver #0 Phillips screwdriver #1 Phillips screwdriver Small plastic scribe Flash BIOS update program CD...
Page 15 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual PC Card Removing the PC Card Installing the PC Card...
Page 16 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the PC Card 1. Follow the procedures in Before Working On Your Computer. 2. Press in on the PC latch to release the latch. 3. Press in on the PC latch to release the PC card.
Page 17 4. Slide the PC card out of the computer.
Page 18 Related tasks Installing the PC Card...
Page 19: Installing The Pc Card
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the PC Card 1. Push the PC latch to lock it. 2. Push the PC card to its slot until it clicks. 3. Follow the procedures in After Working Inside Your Computer.
Page 20 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Secure Digital (SD) Card Removing The Secure Digital (SD) Card Installing The Secure Digital (SD) Card...
Page 21 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing The Secure Digital (SD) Card 1. Follow the procedures in Before Working On Your Computer. 2. Push in on the SD card. 3. Slide the SD card out of the computer.
Page 22 Related tasks Installing The Secure Digital (SD) Card...
Page 23 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing The Secure Digital (SD) Card 1. Slide the SD card into its slot until it clicks into place. 2. Follow the procedures in After Working Inside Your Computer. Related tasks...
Page 24 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Subscriber Identity Module (SIM) Card Removing the Subscriber Identity Module (SIM) Card Installing the Subscriber Identity Module (SIM) Card...
Page 25 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Subscriber Identity Module (SIM) Card 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Press and release the SIM card located on the battery wall.
Page 26 Related tasks Installing the Subscriber Identity Module (SIM) Card...
Page 27 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Subscriber Identity Module (SIM) Card 1. Insert the SIM card into the slot. 2. Replace the battery. 3. Follow the procedures in After Working Inside Your Computer. Related tasks...
Page 28 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual ExpressCard Removing the ExpressCard Installing the ExpressCard...
Page 29 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the ExpressCard 1. Follow the procedures in Before Working On Your Computer. 2. Push in on the ExpressCard. 3. Slide the ExpressCard out of the computer.
Page 30 Related tasks Installing the ExpressCard...
Page 31: Installing The Expresscard
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the ExpressCard 1. Insert the ExpressCard into the slot until it clicks into place. 2. Follow the procedures in After Working Inside Your Computer. Related tasks Removing the ExpressCard...
Page 32 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Back Panel Removing the Back Panel Installing the Back Panel...
Page 33 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Back Panel 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the screws that secure the back panel. 4. Slide and remove the back panel toward the front of the computer .
Page 34 Related tasks Installing the Back Panel...
Page 35: Installing The Back Panel
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Back Panel 1. Slide the back panel towards the back of the computer. 2. Tighten the screws to secure the back panel. 3. Replace the battery. 4. Follow the procedures in After Working Inside Your Computer.
Page 36 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Keyboard Trim Removing the Keyboard Trim Installing the Keyboard Trim...
Page 37 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Keyboard Trim 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Pry up the keyboard trim from the bottom edge. 4. Pry up the keyboard trim from the top edge.
Page 38 5. Remove the keyboard trim from the computer.
Page 39 Related tasks Installing the Keyboard Trim...
Page 40: Installing The Keyboard Trim
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Keyboard Trim 1. Align the keyboard trim with the tabs on the top of the palm rest. 2. Press along the top edge to latch on the tabs. 3. Work your way around the sides and bottom edge of the keyboard trim.
Page 41 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Keyboard Removing the Keyboard Installing the Keyboard...
Page 42 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Keyboard 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the keyboard trim. 4. Remove the screws that secure the keyboard to the front of the computer.
Page 43 5. Flip the computer and remove the screws that secure the keyboard to the computer. 6. Flip the keyboard.
Page 44 7. Disconnect the keyboard data cable from the computer.
Page 45 8. Remove the keyboard from the computer.
Page 46 9. Disconnect and remove the cable from the keyboard.
Page 47 Related tasks Installing the Keyboard...
Page 48: Installing The Keyboard
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Keyboard 1. Connect the keyboard-data cable to the system board. 2. Connect the keyboard data cable to the back of the keyboard. 3. Replace the tape to secure the keyboard data cable to the back of the keyboard.
Page 49 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Optical Drive Removing the Optical Drive Installing the Optical Drive...
Page 50 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Optical Drive 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the back panel. 4. Remove the screw that secures the optical drive to the computer.
Page 51 6. Remove the optical drive from the computer.
Page 52 Related tasks Installing the Optical Drive...
Page 53: Installing The Optical Drive
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Optical Drive 1. Slide the optical drive into the drive bay on the right side of the computer. 2. Tighten the screw on the back of the computer to secure the optical drive.
Page 54 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Hard Drive Removing the Hard Drive Installing the Hard Drive...
Page 55 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Hard Drive 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the back panel. 4. Remove the screws that secure the hard-drive bracket to the computer.
Page 56 5. Use the tab to pull the hard-drive bracket upward and remove it from the computer. 6. Remove the hard-drive bracket screws.
Page 57 7. Disconnect the bracket from the hard drive.
Page 58 8. Disconnect the hard-drive connector from the hard drive.
Page 59 Related tasks Installing the Hard Drive Assembly...
Page 60: Installing The Hard Drive
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Hard Drive 1. Reconnect the hard-drive connector to the hard drive. 2. Attach the hard-drive bracket to the hard drive. 3. Tighten the hard-drive bracket screws to ensure that the bracket is correctly aligned and holding the hard drive.
Page 61 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Wireless Local Area Network (WLAN) Card Removing the Wireless Local Area Network (WLAN) Card Installing The Wireless Local Area Network (WLAN) Card...
Page 62 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Wireless Local Area Network (WLAN) Card 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the back panel. 4. Disconnect the antenna cables from the WLAN card.
Page 63 5. Remove the screw that secures the WLAN card to system board. 6. Remove the WLAN card.
Page 64 Related tasks Installing the Wireless Local Area Network (WLAN) Card...
Page 65 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing The Wireless Local Area Network (WLAN) Card 1. Slide the WLAN card into its slot. 2. Tighten the screw to secure the WLAN card to the computer. 3. Connect the antenna cables according to the color code on the WLAN card.
Page 66 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Wireless Wide Area Network (WWAN) Card Removing the Wireless Wide Area Network (WWAN) Card Installing The Wireless Wide Area Network (WWAN) Card...
Page 67 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Wireless Wide Area Network (WWAN) Card 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the back panel. 4. Disconnect the antenna cables from the WWAN card.
Page 68 5. Remove the screw that secures the WWAN card to the system board. 6. Remove the WWAN card.
Page 69 Related tasks Installing the Wireless Wide Area Network (WWAN) card...
Page 70 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing The Wireless Wide Area Network (WWAN) Card 1. Slide the WWAN card into its slot. 2. Tighten the screw to secure the WWAN card to the computer. 3. Connect the antenna cables according to the color code on the WWAN card.
Page 71 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Memory Removing the Memory Module Installing the Memory Module...
Page 72 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Memory Module 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the back panel. 4. Pry the retention clips away from the memory module.
Page 73 5. Remove the memory module from the computer. Related tasks Installing The Memory Module...
Page 74: Installing The Memory Module
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Memory Module 1. Insert the memory module into the slot in the computer. 2. Press down the memory module until the retention clips secure the memory module. 3. Replace the back panel.
Page 75 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual CPU Door Removing the CPU Door Installing the CPU Door...
Page 76 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the CPU Door 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the back panel. 4. Remove the screws that secure the CPU door to the computer.
Page 77 5. Remove the CPU door. Related tasks Installing the CPU Door...
Page 78: Installing The Cpu Door
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the CPU Door 1. Slide the CPU door downwards and towards the back of the computer. 2. Tighten the screws to secure the CPU door. 3. Replace the back panel.
Page 79 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Heat Sink Removing The Heat Sink Installing the Heat Sink...
Page 80 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing The Heat Sink 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the back panel. 4. Remove the door. 5. Loosen the screws on the heat sink.
Page 81 6. Lift the heat sink and remove it from the computer. Related tasks Installing The Heat Sink...
Page 82: Installing The Heat Sink
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Heat Sink 1. Tighten the screws as per the numerical sequence on the heat sink module. Ensure that the heat sink is correctly aligned and seated over the processor.
Page 83 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Processor Removing the Processor Installing the Processor...
Page 84 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Processor 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the back panel. 4. Remove the door. 5. Remove the heat sink.
Page 85 7. Remove the processor. Related tasks Installing the Processor...
Page 86: Installing The Processor
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Processor 1. Insert the processor into the processor socket. 2. Replace the heat sink. 3. Replace the door. 4. Replace the back panel. 5. Replace the battery. 6. Follow the procedures in After Working Inside Your Computer.
Page 87 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Palm Rest Removing the Palm Rest Installing the Palm Rest...
Page 88 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Palm Rest 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the back panel. 4. Remove the keyboard trim. 5. Remove the keyboard.
Page 89 9. Flip the computer and remove the screws from the back of the computer.
Page 90 10. Disconnect the following cables from the computer: power button cable fingerprint cable touchpad cable...
Page 91 11. Lift up the left edge of the palm rest assembly.
Page 92 12. Release the tabs on the right edge of the palm rest assembly.
Page 93 13. Remove the palm rest assembly from the computer.
Page 94 Related tasks Installing the Palm Rest...
Page 95: Installing The Palm Rest
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Palm Rest 1. From the left edge of the palm rest, press the palm rest downwards on all the edges on the computer. 2. Press down on all edges to ensure that the tabs are engaged.
Page 96 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual LED Board Removing the LED Board Installing the LED Board...
Page 97 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the LED Board 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the back panel. 4. Remove the keyboard trim. 5. Remove the keyboard.
Page 98 10. Disconnect the LED board cable from the system board connector.
Page 99 11. Remove the LED board.
Page 100 Related tasks Installing the LED Board...
Page 101: Installing The Led Board
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the LED Board 1. Insert the LED board on the left bracket. 2. Connect the cable to the system board. 3. Tighten the screw to secure the LED board. 4. Replace the palm rest.
Page 102 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual ExpressCard/Smart Card/PCMCIA Module Removing the ExpressCard/Smart Card/PCMCIA Module Installing the ExpressCard/Smart Card/PCMCIA Module...
Page 103 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the ExpressCard/Smart Card/PCMCIA Module 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the back panel. 4. Remove the keyboard trim. 5. Remove the keyboard 6.
Page 104 10. Disconnect the cage from the system board connector.
Page 105 11. Remove the ExpressCard/Smart Card/PCMCIA module.
Page 106 Related tasks Installing the ExpressCard/Smart Card/PCMCIA Module...
Page 107 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the ExpressCard/Smart Card/PCMCIA Module 1. Attach the connector on the back of the ExpressCard/Smart Card/PCMCIA module, to the connector on the system board. 2. Tighten the screws to secure the ExpressCard/Smart Card/PCMCIA module.
Page 108 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Bluetooth Card Removing the Bluetooth Card Installing the Bluetooth Card...
Page 109: Removing The Bluetooth Card
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Bluetooth Card 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the back panel. 4. Remove the keyboard trim 5. Remove the keyboard.
Page 110 10. Remove the screw that secures the Bluetooth card.
Page 111 11. Remove the Bluetooth card.
Page 112 12. Disconnect the Bluetooth cable from the Bluetooth card.
Page 113 Related tasks Installing the Bluetooth Card.
Page 114: Installing The Bluetooth Card
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Bluetooth Card 1. Connect the Bluetooth cable to the Bluetooth module. 2. Place the Bluetooth module in the computer. 3. Connect the Bluetooth cable to the system board. 4. Replace the palm rest.
Page 115 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Display Assembly Removing the Display Assembly Installing the Display Assembly...
Page 116: Removing The Display Assembly
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Display Assembly 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the back panel. 4. Remove the keyboard trim. 5. Remove the keyboard.
Page 117 11. Remove the antenna cables from the routing channels.
Page 118 12. Disconnect the low-voltage differential (LVDS) and the camera cables.
Page 119 13. Remove the screws that secure the display assembly to the computer.
Page 120 14. Remove the display assembly.
Page 121 Related tasks Installing the Display Assembly...
Page 122: Installing The Display Assembly
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Display Assembly 1. Attach the display assembly to the base of the computer. 2. Tighten the screws to secure the display assembly. 3. Connect the low-voltage differential (LVDS) cable to the system board.
Page 123 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Brackets Removing the Support Brackets Installing the Support Brackets...
Page 124: Removing The Support Brackets
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Support Brackets 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the back panel. 4. Remove the keyboard trim. 5. Remove the keyboard.
Page 125 11. Remove the right support bracket.
Page 126 12. Remove the screws that secure the left support bracket.
Page 127 13. Remove the left support bracket.
Page 128 Related tasks Installing the Support Brackets...
Page 129: Installing The Support Brackets
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Support Brackets 1. Place the right support bracket in the computer. 2. Tighten the screws to secure the right support bracket. 3. Place the left support bracket in the computer.
Page 130 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Modem Card Removing the Modem Card Installing the Modem Card...
Page 131 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Modem Card 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the back panel. 4. Remove the keyboard trim. 5. Remove the keyboard.
Page 132 13. Lift the modem card, to disengage from the connector on the back of the card.
Page 133 14. Disconnect the modem cable from the modem.
Page 134 15. Remove the modem card.
Page 135 Related tasks Installing the Modem Card...
Page 136: Installing The Modem Card
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Modem Card 1. Connect the modem cable. 2. Attach the connector on the back of the modem card to the connector on the I/O panel. 3. Replace the support brackets.
Page 137 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Audio Board Removing the Audio Board Installing the Audio Board...
Page 138 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Audio Board 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the back panel. 4. Remove the keyboard trim. 5. Remove the keyboard.
Page 139 11. Remove the screw that secures the audio board to the computer.
Page 140 12. Remove the audio board.
Page 141 Related tasks Installing the Audio Board...
Page 142: Installing The Audio Board
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Audio Board 1. Place the audio board in the computer. 2. Tighten the screw to secure the audio board. 3. Connect the audio cables to the system board. 4. Replace the Bluetooth card.
Page 143 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual System Board Removing the System Board Installing the System Board...
Page 144: Removing The System Board
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the System Board 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the subscriber identity module (SIM) card. 4. Remove the secure digital (SD) card.
Page 145 22. Disconnect the following cables from the system board: thermal fan cable speaker cable audio board cable bluetooth cable...
Page 146 23. Remove the screws that secure the system board.
Page 147 24. Lift the edge of the system board to disconnect it from the input/output (I/O) panel.
Page 148 25. Release the system board from the port connectors.
Page 149 26. Remove the system board.
Page 150 Related tasks Installing the System Board...
Page 151: Installing The System Board
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the System Board 1. Align the system board to the port connectors and place the system board in the computer. 2. Engage the connector on the back of the system board to the input/output (I/O panel).
Page 152 23. Replace the battery. 24. Follow the procedures in After Working Inside Your Computer. Related tasks Removing the System Board...
Page 153 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Coin-Cell Battery Removing the Coin-Cell Battery Installing the Coin-Cell Battery...
Page 154 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Coin-Cell Battery 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the subscriber identity module (SIM) card. 4. Remove the secure digital (SD) card.
Page 155 23. Pry and remove the coin-cell battery.
Page 156 Related tasks Installing the Coin-Cell Battery...
Page 157 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Coin-Cell Battery 1. Connect the coin-cell battery to system board and secure it. 2. Replace the system board. 3. Replace the support brackets. 4. Replace the LED board. 5. Replace the display assembly.
Page 158 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Input/Output Panel Removing The Input/Output (I/O) Panel Installing the Input/Output (I/O) Panel...
Page 159 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing The Input/Output (I/O) Panel 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the subscriber identity module (SIM) card. 4. Remove the secure digital (SD) card.
Page 160 23. Remove the I/O panel.
Page 161 Related tasks Installing The Input/Output (I/O) Panel...
Page 162 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Input/Output (I/O) Panel 1. Place the I/O panel in the computer. 2. Tighten the screws to secure the I/O panel. 3. Replace the system board. 4. Replace the support brackets.
Page 163 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Power Connector Removing the Power Connector Installing the Power Connector...
Page 164: Removing The Power Connector
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Power Connector 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the subscriber identity module (SIM) card. 4. Remove the secure digital (SD) card.
Page 165 23. Remove the power connector.
Page 166 Related tasks Installing the Power Connector...
Page 167: Installing The Power Connector
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Power Connector 1. Secure the DC-In port to the routing channel on the processor fan. 2. Replace the system board. 3. Replace the support brackets. 4. Replace the LED board.
Page 168 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Modem Connector Removing the Modem Connector Installing the Modem Connector...
Page 169: Removing The Modem Connector
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Modem Connector 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the subscriber identity module (SIM) card. 4. Remove the secure digital (SD) card.
Page 170 25. Remove the modem connector.
Page 171 Related tasks Installing the Modem Connector...
Page 172: Installing The Modem Connector
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Modem Connector 1. Secure the modem connector into the routing channel on the thermal fan. 2. Replace the system board. 3. Replace the support brackets. 4. Replace the audio board.
Page 173 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Thermal Fan Removing the Thermal Fan Installing the Thermal Fan...
Page 174: Removing The Thermal Fan
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Thermal Fan 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the subscriber identity module (SIM) card. 4. Remove the secure digital (SD) card.
Page 175 23. Remove the screw that secures the thermal fan.
Page 176 24. Remove the thermal fan.
Page 177 Related tasks Installing the Thermal Fan...
Page 178: Installing The Thermal Fan
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Thermal Fan 1. Connect the processor fan in the computer. 2. Tighten the screws to secure the processor fan. 3. Secure the power connector and the modem connector cables to the routing channels.
Page 180 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Speaker Removing the Speakers Installing the Speakers...
Page 181: Removing The Speakers
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Speakers 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the subscriber identity module (SIM) card. 4. Remove the secure digital (SD) card.
Page 182 25. Remove the speaker cables from the routing channels.
Page 183 26. Remove the speakers.
Page 184 Related tasks Installing the Speakers...
Page 185: Installing The Speakers
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Speakers 1. Secure the speaker cables to the routing channels. 2. Connect the speakers. 3. Tighten the screws to secure the speakers. 4. Replace the audio board. 5. Replace the Bluetooth.
Page 186 Related tasks Removing the Speakers...
Page 187 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Display Bezel Removing the Display Bezel Installing the Display Bezel...
Page 188 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Display Bezel 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Pry up the bottom edge of the display bezel. 4. Work your way around the sides and the top edge of the display bezel.
Page 189 5. Remove the display bezel.
Page 190 Related tasks Installing the Display Bezel...
Page 191: Installing The Display Bezel
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Display Bezel 1. Place the display bezel on the computer. 2. From the top edge, press downward on the display bezel to engage the tabs om all the edges.
Page 192 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Display Panel Removing the Display Panel Installing the Display Panel...
Page 193 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Display Panel 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the display bezel. 4. Remove the screws that secure the display panel.
Page 194 5. Disconnect the low-voltage differential signaling (LVDS) cable from the back of the display panel. 6. Remove the display panel from the display assembly.
Page 195 7. Remove the screws that secure the display brackets to the display panel and remove the brackets.
Page 196 Related tasks Installing the Display Panel...
Page 197: Installing The Display Panel
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Display Panel 1. Align the display brackets with the display panel. 2. Tighten the screws to secure the display panel. 3. Connect the low-voltage differential signaling (LVDS) cable to the back of the display panel.
Page 198 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Display Hinges Removing the Display Hinges Installing the Display Hinges...
Page 199: Removing The Display Hinges
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Display Hinges 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the back panel. 4. Remove the keyboard trim. 5. Remove the keyboard.
Page 200 13. Remove the display hinges from the display assembly.
Page 201 14. Separate the display hinge towers from the hinges.
Page 202 15. Remove the hinge caps from the display hinges.
Page 203 Related tasks Installing the Display Hinges...
Page 204: Installing The Display Hinges
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Display Hinges 1. Secure the display hinge caps onto the ends of the hinges. 2. Insert the display hinges into the hinge towers. 3. Insert the low-voltage differential signaling (LVDS) cable into the left hinge tower.
Page 205 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Camera Removing the Camera Module Installing the Camera Module...
Page 206 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Removing the Camera Module 1. Follow the procedures in Before Working On Your Computer. 2. Remove the battery. 3. Remove the display bezel. 4. Remove the display panel. 5. Disconnect the camera cable.
Page 207 6. Loosen the screw that secures the camera module. 7. Lift and remove the camera module.
Page 208 Related tasks Installing the Camera Module...
Page 209: Installing The Camera Module
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Installing the Camera Module 1. Place the camera module on the display cover. 2. Tighten the screw to secure the camera. 3. Connect the camera cable to the camera module. 4. Replace the display panel 5.
Page 210 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Specifications Technical Specifications...
Page 211: Technical Specifications
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Technical Specifications NOTE: Offerings may vary by region. The following specifications are only those required by law to ship with your computer. For more information regarding the configuration of your computer, click Start Help and Support and select the option to view information about your computer.
Page 212 Intel Celeron (Socket P) series Memory Memory two SODIMM connector slots Memory 1 GB, 2 GB, 4 capacity GB, or 8 GB Memory type Latitude DDR3 5420/ SDRAM, 1333 E5420/5520/ E5520 Latitude DDR3 E5420m/ SDRAM, 1066 E5520m Minimum 1 GB memory Maximum 8 GB...
Page 213 Interface: Internal high definition audio External microphone- connector, stereo headphones/ external speakers connector Speakers 1.5 W stereo Internal 1.5 W mono speaker amplifier Volume media controls buttons for Media control Video Type Intel UMA video Data bus integrated video Video controller Latitude Intel HD...
Page 214 19-pin HDMI connector Communications Network 10/100/1000 adapter Mbps Ethernet LAN Wireless internal wireless local area network (WLAN), wireless wide area network (WWAN), Bluetooth wireless support Ports and Connectors Audio microphone connector, stereo headphone/ speakers connector Video 15-pin VGA connector Network RJ-45 adapter connector...
Page 215 Type White Light Emitting Diode (WLED) display Size Latitude 14.0 inch 5420/ high E5420/ definition E5420m WLED Latitude 15.6 inch 5520/ high E55420/ definition E5520m WLED Active area (X/Y) Latitude 309.60 5420/ mm/173.90 E5420/ E5420m Latitude 344.20 5520/ mm/193.50 E55420/ E5520m Dimensions: Height...
Page 216 Z-Height Latitude 5.20 mm 5420/ (0.20 inch) E5420/ E5420m Latitude 5.80 mm 5520/ (0.23 inch) E55420/ E5520m Diagonal Latitude 344.6 mm 5420/ (14.00 E5420/ inches) E5420m Latitude 396.24 mm 5520/ (15.60 E55420/ inches) E5520m Maximum resolution Latitude 5420/ E5420/ E5420m 1366 x 768 at 262 K colors...
Page 217 Operating 0° (closed) angle to 135° Refresh rate 60 Hz Minimum Viewing angles: Horizontal +40°/–40° Vertical +10°/–30° Pixel pitch Latitude 5420/ E5420/ E5420m 0.2265 mm x 0.2265 0.1935 mm x 0.1935 Latitude 5520/ E55420/ E5520m 0.2520 mm x 0.2520 0.1935 mm x 0.1935 Keyboard Number...
Page 218 Layout QWERTY/ AZERTY/ Kanji Touchpad Active Area X-axis 80.00 Y-axis 40.70 Battery Type 4-, 6- or 9-cell "smart" lithium ion Dimensions: Height 4-, 6-, 20.00 mm (0.79 and 9- inch) cell Width 4- and 208.00 mm (8.18 6-cell inches) 9-cell 214.00 mm (8.43 inches) Depth...
Page 219 Temperature range: Operating 0 °C to 50 °C (32 °F to 122 °F) Non- –40 °C to 85 °C (– Operating 40 °F to 185 °F) NOTE: battery pack is capable of safely withstanding the above storage temperatures with 100% charge.
Page 220 Output 65 W 90 W current 3.34 A 4.62 A (continuous) (continuous) Rated 19.5 +/– output 1.0 VDC voltage Dimensions 65 W 90 W Height 16.00 mm 16.00 mm (0.63 inch) (0.63 inch) Width 66.00 mm 70.00 mm (2.60 (2.76 inches) inches) Length...
Page 221 Latitude 350.00 5420/ E5420/ (13.78 E5420m inches) Latitude 388.00 5520/ E5520/ (15.28 E5520m inches) Depth Latitude 240.00 5420/ E5420/ (9.45 E5420m inches) Latitude 251.00 5520/ E5520/ (9.88 E5520m inches) Weight Latitude 2.27 kg 5420/ (5.00 lb) E5420/ E5420m Latitude 2.54 kg 5520/ (5.60 lb) E5520...
Page 222 Altitude (maximum): Operating –15.20 m to 3048 m (–50 ft to 10,000 ft) Non- –15.20 m to Operating 10,668 m (–50 ft to 35,000 ft) Airborne G1 or lower as contaminant defined by ISA- level S71.04–1985...
Page 223 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual System Setup Overview Entering System Setup System Setup Options...
Page 224 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Overview System Setup allows you to: change the system configuration information after you add, change, or remove any hardware in your computer. set or change a user-selectable option such as the user password.
Page 225: Entering System Setup
Dell Latitude 5420/E5420/E5420m Owner's Manual Entering System Setup 1. Turn on (or restart) your computer. 2. When the blue DELL logo is displayed, you must watch for the F2 prompt to appear. 3. Once the F2 prompt appears, press <F2> immediately. NOTE: The F2 prompt indicates that the keyboard has initialized.
Page 226: System Setup Options
Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual System Setup Options NOTE: Depending on the computer and its installed devices, the items listed in this section may or may not appear. General System This section lists the Information primary hardware features of your computer.
Page 227 Boot Allows you to Sequence change the order in which the computer attempts to find an operating system. Diskette Drive Internal HDD USB Storage Device CD/DVD/CD- RW Drive Onboard NIC Cardbus NIC Boot List Allows you to Option change the boot list option.
Page 228 System Allows you to control Management the systems management mechanism. The options are: Disabled Alert Only ASF 2.0 DASH/ASF 2.0 Default Setting: Disabled Serial Port Identifies and defines the serial port settings. You can set the serial port to: Disabled Auto COM1 COM2...
Page 229 Parallel Port Allows you to configure the parallel port on the docking station. The options are: Disabled DMA1 DMA3 Default Setting: AT Serial Port Allows you to configure the integrated serial port. The options are: Disabled COM1 COM2 COM3 COM4 Default Setting: COM1 SATA...
Page 230 NOTE: SATA is configured to support RAID mode. Allows you to control Controller the USB controller. The options are: Enable USB Controller Diasabe USB Mass Storage Disable USB Controller Default Setting: Enable USB Controller SMART Allows you to Reporting activate the Self Monitoring Analysis and Reporting Technology (SMART).
Page 231 Miscellaneous Allows you to enable Devices or disable the following devices: Internal Modem Fixed Bay eSATA Ports Hard Drive Free Fall Protection External USB Port Microphone Camera You can also enable or disable Media Card and 1394 together. Default Setting: All devices are enabled.
Page 232 Drives Allows you to configure the SATA drives on board. The options are: SATA-0 SATA-1 SATA-4 SATA-5 Default Setting: All drives are enabled. Video Allows you Brightness to set the display brightness depending up on the power source (On Battery and On AC).
Page 233 NOTE: Successful password changes take effect immediately. NOTE: Deleting the admin password automatically deletes the system password and the hard drive password. NOTE: Successful password changes take effect immediately. Default Setting: Not set System Allows you to set, Password change or delete the system password.
Page 234 Internal Allows you to set HDD-0 or change the Password system's internal hard-disk drive. NOTE: Successful password changes take effect immediately. Default Setting: Not set Password Allows you to Bypass enable or disable the permission to bypass the System and the Internal HDD password, when they are set.
Page 235 Strong Allows you to Password enforce the option to always set strong passwords. Default Setting: Enable Stron Password is not selected. OROM Allows you to set Keyboard an option to enter Access the Option ROM Configuration screens using hotkeys during boot.
Page 236 Computrace Allows you to activate or disable the optional Computrace software The options are: Deactivate Disable Activate NOTE: Activate and Disable options will permanently activate or disable the feature and no further changes will be allowed Default Setting: Deactivate CPU XD Allows you to Support enable the Execute...
Page 237 Password Allows you to Configuration determine the minimum and maximum length of Administrator and System passwords. Admin Allows you to Setup prevent users from Lockout entering Setup when an Administrator password is set. Default Setting: Enable Admin Setup Lockout is not selected.
Page 238 Setting: All Intel® Allows you to SpeedStep™ enable or disable the Intel SpeedStep feature. Default Setting: Enable Intel SpeedStep C States Allows you to Control enable or disable the additional processor sleep states. Default Setting: The options C states, C3, C6, Enhanced C-states, and C7 options are...
Page 239 Intel® Allows you to TurboBoost™ enable or disable the Intel TurboBoost mode of the processor. Default Setting: Enable Intel TurboBoost Hyper- Allows you to Thread enable or Control disable the HyperThreading in the processor. Default Setting: Enabled Power Management AC Behavior Allows you to enable or disable the computer from turning on...
Page 240 Auto On Time Allows you to set the time at which the computer must turn on automatically. The options are: Disabled Every Day Weekdays Default Setting: Disabled USB Wake Allows you to enable Support USB devices to wake the system from Standby.
Page 241 Wake on LAN Allows you to enable or disable the feature that powers on the computer from the Off state when triggered by a LAN signal. Default Setting: Disabled ExpressCharge Allows you to enable or disable the ExpressCharge feature. The options are: Standard ExpressCharge Default Setting:...
Page 242 Adapter Allows you to Warnings enable or disable the system setup (BIOS) warning messages when you use certain power adapters. Default Setting: Enable Adapter Warnings Mouse/ Allows you to Touchpad define how the system handles mouse and touch pad input. The options are: Serial Mouse PS2 Mouse...
Page 243 Allows you to Emulation enable or disable the Legacy USB Emulation. Default Setting: Enable Legacy USB Emulation is selected. Fn Key Allows you to set Emulation the option where the <Scroll Lock> key is used to simulate the <Fn> key feature. Default Setting: Enable Fn Key Emulation...
Page 244 Virtualization Support Virtualization Allows you to enable or disable the Intel Virtualization Technology. Default Setting: Enable Intel Virtualization Technology Wireless Wireless Allows to set the Switch wireless devices that can be controlled by the wireless switch. The options are: WWAN WLAB Bluetooth Default Setting:...
Page 245 Asset Allows you to create a system asset tag if an asset tag is not already set. This option is not set by default. SERR Controls Messages the SERR message mechanism. This option is not set by default. Some graphics cards require that the SERR...
Page 246 Power Allows you Events to view and clear the Power events. BIOS Allows you Progress to view and Events clear the BIOS Progress Events.
Page 247 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Diagnostics Diagnostics...
Page 248: Device Status Lights
Disable Bluetooth Radio If the computer is connected to an electrical outlet, the battery light operates as follows: Alternately blinking amber light An unauthenticated or unsupported non-Dell and blue light AC adapter is attached to your laptop. Alternately blinking amber light...
Page 249 Turns on when the numeric keypad is enabled. Turns on when the Caps Lock function is enabled. Turns on when the Scroll Lock function is enabled.
Page 250 Back to Contents Page Dell Latitude 5420/E5420/E5420m Owner's Manual Contacting Dell Contacting Dell...
Page 251: Contacting Dell
Dell provides several online and telephone-based support and service options. Availability varies by country and product, and some services may not be available in your area. To contact Dell for sales, technical support, or customer service issues: 1. Visit support.dell.com.

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