Page 7 - Working on Your Computer; Recommended Tools
Dell ™ Latitude™ E6420 XFR Service Manual Page 7 1 Working on Your Computer This document provides procedures for removing and installing the components in your computer. Unless otherwise noted, each procedure assumes that the following: • You have performed the steps in Before Working On Your Compu...
Page 8 - After Working On Your Computer
Dell ™ Latitude™ E6420 XFR Service Manual Page 8 NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it from the network device. 4. Disconnect any telephone, network, and USB cables from the computer. NOTICE: To help prevent damage to the system board, yo...
Page 9 - Bottom Access Panel; Removing the Bottom Access Panel
Dell ™ Latitude™ E6420 XFR Service Manual Page 9 2 Bottom Access Panel CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. 1 Captive Screw 2 Battery release slider latches (2) 2.1 Removing the Bottom Access Panel 1. Follow ...
Page 10 - Removing the WLAN/WiMax Card
Dell ™ Latitude™ E6420 XFR Service Manual Page 10 Battery release latches in locked position 1. Tighten the single captive screw highlighted in the figure abovve 2. Replace and tighten the twenty-three M2.5 x 5-mm screws in the sequence identified in the figure above. 3. Follow the procedures in Aft...
Page 11 - Replacing the WLAN/WiMax Card
Dell ™ Latitude™ E6420 XFR Service Manual Page 11 1 Antenna cables (3) 2 WLAN/WiMax card 3 M2 x 3-mm screw 1. Disconnect the antenna cables from the card. 2. Remove the M2 x 3-mm screw. The card will pop up at a 45-degree angle. 3. Slide the card out of the card connector on the system board. 1 WLAN...
Page 12 - Removing a WWAN/FMC Card
Dell ™ Latitude™ E6420 XFR Service Manual Page 12 4 WWAN/FMC Card CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. NOTICE: Insert a WWAN card or FCM only into the slot shown in the picture below. 4.1 Removing a WWAN/FMC ...
Page 13 - Replacing a WWAN/FMC Card
Dell ™ Latitude™ E6420 XFR Service Manual Page 13 5. Slide the card out of the card connector on the system board. 1 WWAN card 2 Card connector 4.2 Replacing a WWAN/FMC Card NOTICE: The connectors are keyed to ensure correct insertion. If you feel resistance, check the connectors on the card and on ...
Page 15 - Removing the RF Passthru Board
Dell ™ Latitude™ E6420 XFR Service Manual Page 15 5.2 Replacing a WPAN (UWB) Card NOTICE: The connectors are keyed to ensure correct insertion. If you feel resistance, check the connectors on the card and on the system board, and realign the card. NOTICE: To avoid damage to the WPAN card, ensure the...
Page 17 - Replacing the RF Passthru Board
Dell ™ Latitude™ E6420 XFR Service Manual Page 17 8. Gently lift the lower-left corner of the RF Passthru board, and remove the RF Passthru board by sliding it out of the chassis socket. 6.2 Replacing the RF Passthru Board 1. Slide the RF Passthru into the chassis socket as shown. 2. Replace and tig...
Page 18 - Fan Assembly; Removing the Fan Assembly
Dell ™ Latitude™ E6420 XFR Service Manual Page 18 7 Fan Assembly 7.1 Removing the Fan Assembly CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. 1. Follow the instructions in Before Working on Your Computer. 2. Remove the...
Page 19 - Replacing the Fan Assembly
Dell ™ Latitude™ E6420 XFR Service Manual Page 19 4. Disconnect the fan cable from the system board. 5. Lift the fan straight up to remove it. 7.2 Replacing the Fan Assembly CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your compute...
Page 20 - Processor Heatsink Assembly; Removing the Processor Heatsink Assembly
Dell ™ Latitude™ E6420 XFR Service Manual Page 20 8 Processor Heatsink Assembly 8.1 Removing the Processor Heatsink Assembly CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. UMA Base shown (Discrete revision inset) 1 Cap...
Page 21 - Replacing the Processor Heatsink Assembly
Dell ™ Latitude™ E6420 XFR Service Manual Page 21 4. Carefully lift the processor plate of the assembly up at an angle. 5. Remove the radiator from the computer. 8.2 Replacing the Processor Heatsink Assembly CAUTION: Before you begin any of the procedures in this section, follow the safety instructi...
Page 22 - Processor Module; Removing the Processor Module; Replacing the Processor Module
Dell ™ Latitude™ E6420 XFR Service Manual Page 22 9 Processor Module 9.1 Removing the Processor Module CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. 1. Follow the instructions in Before Working on Your Computer. 2. Re...
Page 24 - Memory; Removing a Memory Module
Dell ™ Latitude™ E6420 XFR Service Manual Page 24 10 Memory Your computer has two user-accessible SODIMM sockets. You can increase your computer memory by installing memory modules on the system board. See "Specifications" in your Setup and Features Information Guide for information on the m...
Page 25 - Replacing a Memory Module; Removing the Coin-Cell Battery
Dell ™ Latitude™ E6420 XFR Service Manual Page 25 10.2 Replacing a Memory Module CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. NOTICE: If you are installing two memory modules, you must install the bottom memory modul...
Page 26 - Replacing the Coin-Cell Battery
Dell ™ Latitude™ E6420 XFR Service Manual Page 26 5. Disconnect the coin-cell battery cable from the system board. 11.2 Replacing the Coin-Cell Battery CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. 1. Connect the coin...
Page 27 - Keyboard Cover; Removing the Keyboard Cover; Replacing the Keyboard Cover
Dell ™ Latitude™ E6420 XFR Service Manual Page 27 12 Keyboard Cover 12.1 Removing the Keyboard Cover CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. 1. Follow the procedures in Before Working on Your Computer. 2. Remove...
Page 28 - Keyboard; Removing the Keyboard
Dell ™ Latitude™ E6420 XFR Service Manual Page 28 13 Keyboard 13.1 Removing the Keyboard CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. 1. Follow the procedures in Before Working on Your Computer. 2. Start with system ...
Page 30 - Replacing the Keyboard; Removing the GPS Module
Dell ™ Latitude™ E6420 XFR Service Manual Page 30 NOTICE: The key caps on the keyboard are fragile, easily dislodged, and time-consuming to replace. Exercise care when removing and handling the keyboard. 13.2 Replacing the Keyboard CAUTION: Before you begin any of the procedures in this section, fol...
Page 31 - Replacing the GPS Card
Dell ™ Latitude™ E6420 XFR Service Manual Page 31 4. Push the Retention Clip toward the rear of the base assembly and lift the GPS module up by the USB cable. 5. Disconnect the USB cable from the GPS module. 14.2 Replacing the GPS Card 1. Slip the front edge of the GPS Module into the retention feat...
Page 32 - Display Bezel; Removing the Display Bezel
Dell ™ Latitude™ E6420 XFR Service Manual Page 32 15 Display Bezel 15.1 Removing the Display Bezel CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. 1. Follow the instructions in Before Working on Your Computer. 2. Close ...
Page 34 - Replacing the Display Bezel; LCD Panel; Removing the LCD Panel
Dell ™ Latitude™ E6420 XFR Service Manual Page 34 15.2 Replacing the Display Bezel CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. 1. Place the Display Bezel on the Display Assembly. 2. Replace and tighten the 18 M2.5 x...
Page 35 - Replacing the LCD Panel
Dell ™ Latitude™ E6420 XFR Service Manual Page 35 NOTICE: There are four rubber corner dampners that sit between the LCD panel and display back. The corner dampners may stick to the LCD panel when the panel is removed from the display back. Remove all corner dampners from the LCD panel as these are ...
Page 36 - Removing the Microphone/Camera Module; Replacing the Microphone/Camera Module
Dell ™ Latitude™ E6420 XFR Service Manual Page 36 4. Position the two upper corner dampners on the LCD panel (top edge) before the LCD panel is installed in the display back. 5. Rotate the panel up and position the lower edge into the corner dampners in the Display Back. Continue to rotate the LCD p...
Page 37 - Removing the Touch Controller Module; Replacing the Touch Controller Module; Display LED Board; Removing the Display LED Board
Dell ™ Latitude™ E6420 XFR Service Manual Page 37 2. Tighten the captive screw securing the Microphone/Camera Module to the display back 3. Reconnect the flex cable to the Microphone/Camera Module 4. Replace the display bezel(see Replacing the Display Bezel). 5. Follow the procedures in (After Worki...
Page 39 - Replacing the GPS Antenna; Display Cable Channel Covers; Removing the Display Cable Channel Covers; Replacing the Display Cable Channel Covers
Dell ™ Latitude™ E6420 XFR Service Manual Page 39 20.2 Replacing the GPS Antenna 1. Reconnect the green antenna cable to the GPS antenna. 2. Install the GPS antenna in the pocket at the top of the Display back as shown in the figure above. 3. Replace the display bezel(see Replacing the Display Bezel...
Page 40 - Display Assembly; Removing the Display Assembly
Dell ™ Latitude™ E6420 XFR Service Manual Page 40 22 Display Assembly 22.1 Removing the Display Assembly CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. 1. Follow the instructions in Before Working on Your Computer. 2. ...
Page 42 - Replacing the Display Assembly
Dell ™ Latitude™ E6420 XFR Service Manual Page 42 10. Remove the three M2.5 x 8-mm screws from each hinge. 11. Turn the computer topside up. 12. Open the display to 90 degrees and lift the display assembly off the base assembly. 22.2 Replacing the Display Assembly CAUTION: Before you begin any of th...
Page 43 - Palm Rest; Removing the Palm Rest
Dell ™ Latitude™ E6420 XFR Service Manual Page 43 23 Palm Rest 23.1 Removing the Palm Rest CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. 1. Follow the instructions in Before Working on Your Computer. 2. Remove the dis...
Page 46 - Replacing the Palm Rest; Smartcard Assembly; Removing the Smartcard Assembly
Dell ™ Latitude™ E6420 XFR Service Manual Page 46 23.2 Replacing the Palm Rest CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. NOTE: If this is a new palm rest, remove the two cable access panels, and the keyboard cover...
Page 48 - Replacing the Smartcard Assembly
Dell ™ Latitude™ E6420 XFR Service Manual Page 48 8. Left up on the back edge of the smartcard assembly and rotate the left edge toward the back. Continue until the smartcard assembly is free from the base assembly. 9. Lift up to remove the smartcard housing from the base assembly. 24.2 Replacing th...
Page 49 - Express Card Cage; Removing the Express Card Cage
Dell ™ Latitude™ E6420 XFR Service Manual Page 49 7. Replace the palm rest (see Replacing the Palm rest). 8. Follow the procedures in After Working on Your Computer. 25 Express Card Cage 25.1 Removing the Express Card Cage CAUTION: Before you begin any of the procedures in this section, follow the s...
Page 50 - Hard Drive; Removing the Hard Drive
Dell ™ Latitude™ E6420 XFR Service Manual Page 50 6. Lift up on the back edge of the smartcard assembly and rotate the left edge toward the back. Continue until the smartcard assembly is free from the base assembly. 7. Lift up to remove the smartcard housing from the base assembly. 25.2 Replacing th...
Page 52 - Replacing the Hard Drive; Modular Drive; Removing the Modular Drive
Dell ™ Latitude™ E6420 XFR Service Manual Page 52 5. Slide hard drive out of the carrier. 26.2 Replacing the Hard Drive CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. NOTICE: Hard drives are extremely fragile. Exercise...
Page 53 - Replacing the Modular Drive; Audio Board; Removing the Audio Board Assembly
Dell ™ Latitude™ E6420 XFR Service Manual Page 53 1 Modular drive 2 Release latch 27.2 Replacing the Modular Drive CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. 1. Slide the drive in the modular bay. 2. Close the modu...
Page 54 - Replacing the Audio Board; Media Board; Removing the Media Board Assembly
Dell ™ Latitude™ E6420 XFR Service Manual Page 54 5. Remove the Audio Board from the chassis 28.2 Replacing the Audio Board CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. 1. Set the Audio Board into the chassis 2. Repl...
Page 55 - Replacing the Media Board
Dell ™ Latitude™ E6420 XFR Service Manual Page 55 4. Remove two M2 x 3-mm screws securing the media board to the chassis. 5. Remove the Media Board from the chassis 29.2 Replacing the Media Board CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shi...
Page 56 - USB Board; Removing the USB Board Assembly
Dell ™ Latitude™ E6420 XFR Service Manual Page 56 30 USB Board 30.1 Removing the USB Board Assembly CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. 1. Follow the instructions in Before Working on Your Computer. 2. Remov...
Page 57 - Replacing the USB Board; System Board Assembly
Dell ™ Latitude™ E6420 XFR Service Manual Page 57 7. Open the Media Bay door and slide the USB board out of the chassis through the media bay door. 30.2 Replacing the USB Board CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your comp...
Page 58 - Removing the System Board Assembly
Dell ™ Latitude™ E6420 XFR Service Manual Page 58 The system board’s BIOS chip contains the Service Tag, which is also visible on a barcode label on the bottom of the computer. The replacement kit for the system board includes media that provides a utility for transferring the Service Tag to the rep...
Page 63 - Replacing the System Board Assembly; Removing the I/O Card
Dell ™ Latitude™ E6420 XFR Service Manual Page 63 31.2 Replacing the System Board Assembly CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. NOTICE: Ensure that any loose cables do not get caught beneath the system board....
Page 64 - Replacing the I/O Card; Speaker Assembly; Removing the Speaker Assembly; Replacing the Speaker Assembly
Dell ™ Latitude™ E6420 XFR Service Manual Page 64 4. Remove the I/O card. 32.2 Replacing the I/O Card 1. Replace the I/O card. 2. Install and tightenthe two M2.5 x 5-mm screw to secure the I/O card to the chassis. 3. Replace the system board (see Replacing the System Board Assembly). 4. Follow the p...
Page 65 - DC Power Cable; Removing the DC Power Cable; Replacing the DC Power Cable
Dell ™ Latitude™ E6420 XFR Service Manual Page 65 34 DC Power Cable 34.1 Removing the DC Power Cable CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. 1. Follow the instructions in Before Working on Your Computer. 2. Remo...
Page 66 - Base Assembly; Removing the Base Assembly; Stylus; Removing the Stylus
Dell ™ Latitude™ E6420 XFR Service Manual Page 66 1. Place the DC power cable in the base assembly, aligning the guides on the connector sides with the base. Once installed, press down firmly on top of the DC power connector to seal the adhesive to the base. 2. Route the DC power cable in the base a...
Page 67 - Replacing the Stylus; Shoulder Strap Anchors; Removing the Shoulder Strap Anchors; Replacing the Shoulder Strap Anchors; Handle; Removing the Handle
Dell ™ Latitude™ E6420 XFR Service Manual Page 67 36.2 Replacing the Stylus 1. Pinch the end of the tether loop to a point. 2. Place the tether loop, pointed end first, through the tether anchor at the edge of the system. 3. Run the stylus and tether through the tether loop. 4. Once the stylus and t...
Page 68 - Replacing the Handle; Doors; Removing Media Bay Door
Dell ™ Latitude™ E6420 XFR Service Manual Page 68 4. Remove left and right side M2.5x8 mm screw securing handle pin to chassis. 5. Remove the carry handle from the sockets by sliding handle up. 38.2 Replacing the Handle 1. Insert the handle pins into the handle ends and set the handle in the chassis...
Page 74 - System Setup; Setup Overview; System Setup Menu
Dell ™ Latitude™ E6420 XFR Service Manual Page 74 40 System Setup 40.1 Setup 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. • read t...
Page 80 - Diagnostics
Dell ™ Latitude™ E6420 XFR Service Manual Page 80 System Logs Option Description BIOS Events Allows you to view and clear the System Setup (BIOS) POST events. DellDiag Events Allows you to view and clear the DellDiag events. Thermal Events Allows you to view and clear the Thermal events. Power Event...
Page 81 - Contacting Dell
Dell ™ Latitude™ E6420 XFR Service Manual Page 81 41.1 Battery Status Lights If the computer is connected to an electrical outlet, the battery light operates as follows: • Alternately blinking amber light and blue light — An unauthenticated or unsupported non-Dell AC adapter is attached to your lapt...
