Dell™ Latitude™ E6420 XFR Service Manual www.dell.com | support.dell.
Dell™ Latitude™ E6420 XFR Service Manual Notes, Notices, and Cautions NOTE: A NOTE indicates important information that helps you make better use of your computer. NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death. Information in this document is subject to change without notice. © 2012 Dell Inc. All rights reserved.
Dell™ Latitude™ E6420 XFR Service Manual Table of Contents 1 WORKING ON YOUR COMPUTER ............................................................................................................................... 7 1.1 1.2 1.3 2 RECOMMENDED TOOLS .............................................................................................................................................................. 7 BEFORE WORKING ON YOUR COMPUTER ...................................................................
Dell™ Latitude™ E6420 XFR Service Manual 13.1 13.2 14 GPS MODULE (OPTIONAL) ...................................................................................................................................... 30 14.1 14.2 15 REMOVING THE SMARTCARD ASSEMBLY ............................................................................................................................. 46 REPLACING THE SMARTCARD ASSEMBLY .......................................................................................
Dell™ Latitude™ E6420 XFR Service Manual 26.2 27 MODULAR DRIVE ......................................................................................................................................................... 52 27.1 27.2 28 REMOVING THE SHOULDER STRAP ANCHORS .................................................................................................................... 67 REPLACING THE SHOULDER STRAP ANCHORS...................................................................................
Dell™ Latitude™ E6420 XFR Service Manual 39.3 39.4 39.5 39.6 39.7 39.8 39.9 39.10 39.11 39.12 39.13 39.14 40 SYSTEM SETUP .............................................................................................................................................................. 74 40.1 40.2 41 SETUP OVERVIEW ................................................................................................................................................................. 74 SYSTEM SETUP MENU .............
Dell™ Latitude™ E6420 XFR Service Manual 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 Computer. You have read the safety information that shipped with your computer. NOTE: The color of your system and certain system components may appear differently than shown in this document. 1.
Dell™ Latitude™ E6420 XFR Service Manual 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, you must remove the battery from the battery bay before you service the computer. NOTE: See the battery removal instructions adhered to the edge of the battery. 5. 6. 7. 8.
Dell™ Latitude™ E6420 XFR Service Manual 2 Bottom Access Panel CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. 2 1 1 Captive Screw 2 Battery release slider latches (2) 2.1 Removing the Bottom Access Panel 1. Follow the procedures in Before Working on Your Computer. 2. Close the display and turn the computer upside down. 3. Remove the twenty-three M2.
Dell™ Latitude™ E6420 XFR Service Manual 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 After Working on Your Computer. 3 WLAN/WiMax Card CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer.
Dell™ Latitude™ E6420 XFR Service Manual 1 3 Antenna cables (3) M2 x 3-mm screw 2 WLAN/WiMax card 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/WiMax card 2 Card connector 3.2 Replacing the WLAN/WiMax Card NOTICE: The connectors are keyed to ensure correct insertion.
Dell™ Latitude™ E6420 XFR Service Manual 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 Card 1. Follow the procedures in Before Working on Your Computer. 2. Remove the Bottom Access Panel (see Removing the Bottom Access Panel). 1 1 2 WWAN/FMC Card 2 M2x3 mm (1) 3.
Dell™ Latitude™ E6420 XFR Service Manual 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 the system board, and realign the card. NOTICE: To avoid damage to the WWAN card, ensure the cables are not under the card when you replace it. NOTICE: Insert a WWAN card or FCM only into the slot labeled WWAN/WiMax.
Dell™ Latitude™ E6420 XFR Service Manual 1 WPAN/UWB card 6. Slide the card out of the card connector on the system board.
Dell™ Latitude™ E6420 XFR Service Manual 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 cables are not under the card when you replace it. NOTICE: Insert a WPAN card only into the slot labeled WPAN/UWB/FCM. 1. 2. 3. 4. 5. 6. 7. 6 Slide the card into the connector labeled WPAN/UWB/FCM.
Dell™ Latitude™ E6420 XFR Service Manual 5. Disconnect the antenna connection from the RF Passthru board to the WWAN card if present 6. Disconnect the antenna connection from the RF Passthru board to the WLAN card if present 7. Remove the M2 x 3-mm screw that secures the RF Passthru board to the chassis.
Dell™ Latitude™ E6420 XFR Service Manual 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. 2. 3. 4. Slide the RF Passthru into the chassis socket as shown. Replace and tighten the M2 x 3-mm screw highlighted in the figure above. Connect the antenna connections to the RF Passthru board.
Dell™ Latitude™ E6420 XFR Service Manual 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 bottom access panel (see Removing the Bottom Access Panel). 3. Remove the three M2.5 x 5-mm screws that secure the fan to the base assembly. 1 3 Fan Connection 2 M2.
Dell™ Latitude™ E6420 XFR Service Manual 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 computer. 1. 2. 3. 4. 5. 6. 7. Insert the fan. Align the screws holes in the fan with the screw holes in the base assembly. Replace the three M2.5 x 5-mm screws to secure the fan to the base assembly.
Dell™ Latitude™ E6420 XFR Service Manual 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 Captive screws (4) 2 Radiator 3 Processor plate 1. Follow the instructions in Before Working on Your Computer. 2. Remove the bottom access panel and fan assembly (see Removing the Fan Assembly). 3.
Dell™ Latitude™ E6420 XFR Service Manual 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 instructions that shipped with your computer. 1. 2. 3. 4. 5. Place the radiator into the computer at an angle and set the processor plate in place.
Dell™ Latitude™ E6420 XFR Service Manual 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. Remove the bottom access panel, fan assembly and processor heatsink assembly (see Removing the Processor Heatsink Assembly).
Dell™ Latitude™ E6420 XFR Service Manual 1. Align the pin-1 corner of the processor with the pin-1 corner of the ZIF socket, and then insert the processor. NOTE: The pin-1 corner of the processor has a triangle that aligns with the triangle on the pin-1 corner of the ZIF socket, then insert the processor. When the processor is properly seated, all four corners are aligned at the same height. If one or more corners of the processor are higher than the others, the processor is not seated properly.
Dell™ Latitude™ E6420 XFR Service Manual 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 memory supported by your computer. Install only memory modules that are intended for your computer. NOTE: Memory modules purchased from Dell are covered under your computer warranty. 10.
Dell™ Latitude™ E6420 XFR Service Manual 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 module first. 1. Place the module at a 45-degree angle, and align the notch in the module with the tab on the connector. NOTE: If the memory module is not installed properly, the computer may not boot.
Dell™ Latitude™ E6420 XFR Service Manual 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-cell battery cable to the system board. 2.
Dell™ Latitude™ E6420 XFR Service Manual 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 the two M2.5 x 5-mm screws from the keyboard cover. 1 1 Keyboard Cover 2 M2.5x5 mm (2) 3. Remove the keyboard cover. 12.
Dell™ Latitude™ E6420 XFR Service Manual 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 upside down.
Dell™ Latitude™ E6420 XFR Service Manual 6. Lift up on keyboard from the bottom edge. Keyboard is lightly retained on sides by snap features. 7. Flip keyboard over toward display exposing the flex cable attaching the keyboard to the system through the keyboard access door. 1 Keyboard Acess Panel 2 M2.5x5 mm (7) 8. Remove the seven M2.5x5mm screws retaining the access door. 9. Disconnect the keyboard flex cable to remove the keyboard.
Dell™ Latitude™ E6420 XFR Service Manual 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, follow the safety instructions that shipped with your computer. NOTICE: The key caps on the keyboard are fragile, easily dislodged, and time-consuming to replace. Exercise care when removing and handling the keyboard. 1.
Dell™ Latitude™ E6420 XFR Service Manual 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. 2. 3. 4. 5. 6. Slip the front edge of the GPS Module into the retention features on the base assembly. Lower the rear edge of the GPS Module and secure in place with the retention clip on the base assembly. Connect the USB cable to the GPS module.
Dell™ Latitude™ E6420 XFR Service Manual 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 and latch the Display assembly if open. 3. Remove the 4 M2.5x8 mm screws highlighted in the figure below. M2.5x8 mm (4) 4. Open the Display assembly to access the Display Bezel 5. Remove the 5 M2.
Dell™ Latitude™ E6420 XFR Service Manual 7. Remove the 18 M2.5 x8 mm screws securing the Display Bezel to the Display Assembly 1 M2.5x8 mm (18) 8.
Dell™ Latitude™ E6420 XFR Service Manual 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. 2. 3. 4. 5. 6. Place the Display Bezel on the Display Assembly. Replace and tighten the 18 M2.5 x 8 mm secrews to secure the bezel to the Display Assembly. Place the right and left antenna covers on the Display Assembly. Replace and tighten the 5 M2.
Dell™ Latitude™ E6420 XFR Service Manual 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 not part of the LCD panel assembly. 5. Remove any capton tape securing the LVDS connection and disconnect the cable. The LCD panel can now be remove from the system. 16.2 Replacing the LCD Panel 1.
Dell™ Latitude™ E6420 XFR Service Manual 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 panel into position and insure the upper corner dampners are correctly located on each corner of the LCD panel, between the LCD panel and the Display Back. 6. Replace the display bezel(see Replacing the Display Bezel). 7.
Dell™ Latitude™ E6420 XFR Service Manual 2. 3. 4. 5. Tighten the captive screw securing the Microphone/Camera Module to the display back Reconnect the flex cable to the Microphone/Camera Module Replace the display bezel(see Replacing the Display Bezel). Follow the procedures in (After Working On Your Computer). 18 Touch Controller Module (Optional) 18.
Dell™ Latitude™ E6420 XFR Service Manual 1. Follow the procedures in Before Working on Your Computer. 2. Remove the display bezel (see Removing the Display Bezel). 3. Remove the M2x3 mm screw securing the Touch Controller module to the Display Back. 4. Lift out the Display LED board from the left side and disconnect the cable identified in the figure below. 5. Remove the Display LED board. 19.2 Replacing the Display LED Board 1. 2. 3. 4. 5. Reconnect the cable to the Display LED board.
Dell™ Latitude™ E6420 XFR Service Manual 20.2 Replacing the GPS Antenna 1. 2. 3. 4. Reconnect the green antenna cable to the GPS antenna. Install the GPS antenna in the pocket at the top of the Display back as shown in the figure above. Replace the display bezel(see Replacing the Display Bezel). Follow the procedures in (After Working On Your Computer). 21 Display Cable Channel Covers 21.
Dell™ Latitude™ E6420 XFR Service Manual 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. 2. 3. 4. Follow the instructions in Before Working on Your Computer. Remove the bottom access panel (see Removing the Bottom Access Panel). Remove the display cable channel covers (see Removing the Display Cable Channel Covers).
Dell™ Latitude™ E6420 XFR Service Manual 6. Disconnect the LVDS cable from the motherboard. 7. Remove the mylar cable cover and uroute the LVDS cable from the base assembly. 8. Disconnect the touch controller USB cable if present. 9. Pull up on the left and right cable bundles near the gromments to separate the cable bundles from the base assembly.
Dell™ Latitude™ E6420 XFR Service Manual 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 the procedures in this section, follow the safety instructions that shipped with your computer. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17.
Dell™ Latitude™ E6420 XFR Service Manual 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. 2. 3. 4. Follow the instructions in Before Working on Your Computer. Remove the display assembly (see Removing the Display Assembly). With the display assembly removed, turn the system over so the bottom is facing up. Remove the four M2.5x5mm screws from the bottom side.
Dell™ Latitude™ E6420 XFR Service Manual 7. Disconnect the contactless smartcard cable, LED board cable, touchpad cable, and FPR cable (optional) accessible through access panels.
Dell™ Latitude™ E6420 XFR Service Manual 8. Remove the sixteen M2.5 x 8-mm screws on the top of the palm rest. 9. Loosen the one captive screw highlighted. 10. Lift the palm rest from the computer.
Dell™ Latitude™ E6420 XFR Service Manual 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 before installation. 1. 2. 3. 4. 5. 6. 7. 8. Align the palm rest on the base assembly. Replace the 16 M2.5 x 8-mm screws on the top of the palm rest. Tighten the one captive screw on the top of the palm rest.
Dell™ Latitude™ E6420 XFR Service Manual 5. Remove the smartcard flex connector from the system. 6. Remove the three M2 x 3-mm screws from the smartcard assembly. 7. Remove the two M2.5x5 mm screws from the smartcard assembly.
Dell™ Latitude™ E6420 XFR Service Manual 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 the Smartcard Assembly 1. 2. 3. 4. 5. 6. Set the smartcard assembly in place by aligning the rectangle openings with the tabs on the base assembly.
Dell™ Latitude™ E6420 XFR Service Manual 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 safety instructions that shipped with your computer. 1. Follow the procedures in Before Working on Your Computer. 2. Remove the palm rest (see Removing the Palm rest). 3.
Dell™ Latitude™ E6420 XFR Service Manual 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 the Smartcard Assembly 1. Set the express card cage in place by aligning the left edge of the cage over the Express Card connection on the system board.
Dell™ Latitude™ E6420 XFR Service Manual NOTE: See hard drive removal instructions adhered to the edge of the hard drive. 2. Press in the blue locking button on the right side of the compartment. 3. While pressing in the blue locking button, use the tab on the edge of the hard drive to pull the hard drive module from the compartment. 4. Remove the four M3 x 4 mm screws securing the hard drive to the hard drive module carrier.
Dell™ Latitude™ E6420 XFR Service Manual 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 care when handling the hard drive. NOTICE: Use firm and even pressure to slide the hard drive into place. Excessive force may result in damage to the connector. 1.
Dell™ Latitude™ E6420 XFR Service Manual 1 2 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 modular (XBay) disk drive door by rotating it up until it clicks into its locked position. 3. Follow the procedures in After Working on Your Computer. 28 Audio Board 28.
Dell™ Latitude™ E6420 XFR Service Manual 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. 2. 3. 4. 5. 6. Set the Audio Board into the chassis Replace and tighten the two M2 x 3-mm screws for the Audio Board. Route and connect the Audio card cable to the connector on the Audio Board.
Dell™ Latitude™ E6420 XFR Service Manual 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 shipped with your computer. 1. 2. 3. 4. 5. Set the Media Board into the chassis Replace and tighten the two M2 x 3-mm screws for the Media Board.
Dell™ Latitude™ E6420 XFR Service Manual 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. 2. 3. 4. Follow the instructions in Before Working on Your Computer. Remove the palm rest (see Removing the Palm rest). Remove the Media Board (see Removing the Media Board) Disconnect the USB cable from the USB Board (J10), as show below. 5. Remove the one M2.
Dell™ Latitude™ E6420 XFR Service Manual 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 computer. 1. 2. 3. 4. 5. 6. 7. Open the Media Bay door and slide the USB board into the chassis Replace and tighten the two M2 x 3-mm screws for the USB Board. Install the Media Board Bracket and secure with one M2.
Dell™ Latitude™ E6420 XFR Service Manual 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 replacement system board. NOTE: The replacement kit for the system board also includes media that provides a utility to set the system board as XFR, and a tech sheet for running this utility. 31.
Dell™ Latitude™ E6420 XFR Service Manual 16. Remove the one M2.5 x 5-mm screw securing the left rear of the system board to the I/O Daughter Board. 17. Remove the remaining three M2.5 x 5-mm screws from the system board as shown in the figure.
Dell™ Latitude™ E6420 XFR Service Manual 18. Lift the back-left corner of the system board to release the I/O board connector. Gently lift the system board up from the left rear and slide it slightly to the left to release the port connections on the right rear corner. 19. Raise rear of system board and disconnect speaker cable from bottom side, front edge of system board.
Dell™ Latitude™ E6420 XFR Service Manual 20. Lift the system board out of the base assembly. NOTE: HDMI Bracket and HDMI Route Adapter should be transferred to replacement system board assemblies. 21. Remove the one M2 x 3mm screw securing the HDMI Route Adapter to the HDMI Bracket.
Dell™ Latitude™ E6420 XFR Service Manual 22. Carefully remove the HDMI Route Adapter from the HDMI connector on the motherboard. 23. Remove the bracket from the USB connector. NOTE: HDMI Bracket and HDMI Route Adapter should be transferred to replacement system board assemblies.
Dell™ Latitude™ E6420 XFR Service Manual 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. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. Install the HDMI bracket into the USB port labeled JUSB2 (closest to the e-SATA port).
Dell™ Latitude™ E6420 XFR Service Manual 4. Remove the I/O card. 32.2 Replacing the I/O Card 1. 2. 3. 4. Replace the I/O card. Install and tightenthe two M2.5 x 5-mm screw to secure the I/O card to the chassis. Replace the system board (see Replacing the System Board Assembly). Follow the procedure for After Working on Your Computer. 33 Speaker Assembly 33.
Dell™ Latitude™ E6420 XFR Service Manual 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. 2. 3. 4. Follow the instructions in Before Working on Your Computer. Remove the palm rest(see Removing the Palm Rest). Disconnect the DC power cable from the system board. Unroute the DC power cable from the base assembly.
Dell™ Latitude™ E6420 XFR Service Manual 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 assembly. 3. Route and connect the DC in cable to the connector on the system board. 4. Replace the palm rest (see Replacing the Palm rest). 5. Follow the procedures in After Working on Your Computer. 35 Base Assembly 35.
Dell™ Latitude™ E6420 XFR Service Manual 36.2 Replacing the Stylus 1. 2. 3. 4. Pinch the end of the tether loop to a point. Place the tether loop, pointed end first, through the tether anchor at the edge of the system. Run the stylus and tether through the tether loop. Once the stylus and tether are completely through the tether loop, pull the stylus to secure the tether loop onto the tether anchor. 5. Insert stylus in stylus bay below the handle 6. Follow the procedures in After Working on Your Computer.
Dell™ Latitude™ E6420 XFR Service Manual 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. 2. 3. 4. Insert the handle pins into the handle ends and set the handle in the chassis. Replace the two M2.5 x 8-mm screws to secure the handle guide pins to the chassis. Replace the palm rest assembly (see Replacing the Palm Rest). Follow the procedures in After Working on Your Computer.
Dell™ Latitude™ E6420 XFR Service Manual 1. Follow the procedures in Before Working on Your Computer. 2. Open the door to relieve hinge pressure. 3. Remove the three M3 x 3-mm screws from the bottom of the base assembly 39.2 Replacing Media Bay Door 1. Insert door hinge onto assembly and align the hinge divots. 2. Insert the three M3 x 3-mm screws and fit securely. 3. Follow the procedures in After Working on Your Computer. 39.3 Removing the HDMI/eSATA Door 1.
Dell™ Latitude™ E6420 XFR Service Manual 39.4 Replacing the HDMI/eSATA Door 1. Insert door hinge onto assembly and align the hinge divots. 2. Replace the two M3 x 3-mm screws. 3. Follow the procedures in After Working on Your Computer. 39.5 Removing the Battery Door NOTE: Removal of the battery door requires a security screw driver with a triangle head. These are available with the battery door kit. 1. Follow the procedures in Before Working on Your Computer. 2. Open the door to relieve hinge pressure.
Dell™ Latitude™ E6420 XFR Service Manual 39.7 Removing the Power and/or LAN Door 1. Follow the procedures in Before Working on Your Computer. 2. Open the door to relieve hinge pressure. 3. Remove the one M2.5 x 5-mm screw and the one M3x3 mm screw securing the hinge to the base assembly 4. Remove the LCD Channel cover then remove the door. 39.8 Replacing the Power and/or LAN Door 1. 2. 3. 4. Page 71 Insert door hinge onto assembly and align the hinge divots. Insert LCD Channel Cover.
Dell™ Latitude™ E6420 XFR Service Manual 39.9 Removing the VGA/Serial Door 1. Follow the procedures in Before Working on Your Computer. 2. Open the door to relieve hinge pressure. 3. Remove the two M3 x 3-mm screws from the bottom of the base assembly. 39.10 Replacing the VGA/Serial Door 1. Insert door hinge onto assembly and align the hinge divots. 2. Replace the two M3 x 3-mm screws. Follow the procedures in After Working on Your Computer. 39.11 1. 2.
Dell™ Latitude™ E6420 XFR Service Manual 3. Remove the two VGA Connector jack screws and the two Serial Connector jack screws. 4. Place a scribe in the small opening and pull to remove. 39.12 Replacing the VGA Panel Cover 1. Place the VGA Panel Cover in place over the VGA port. 2. Replace the two VGA connector jack screws and the two Serial connector jack screws.. 3. Follow the procedures in After Working on Your Computer. 39.13 Removing the HDD Door 1.
Dell™ Latitude™ E6420 XFR Service Manual 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 the current amount of memory or set the type of hard drive installed. Before you use System Setup, it is recommended that you write down the System Setup screen information for future reference.
Dell™ Latitude™ E6420 XFR Service Manual Date/Time Allows you to change the date and time. System Configuration NOTE: System Configuration contains options and settings related to integrated system devices. Depending on your computer and installed devices, the items listed in this section may or may not appear.
Dell™ Latitude™ E6420 XFR Service Manual Option Description 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 Option LCD Brightness Enable Optimus Description Allows you to set the display brightness depending on the power source (On Battery and On AC). This option enables or disables the Nvidia Optimus Technology applicable to Windows 7 only.
Dell™ Latitude™ E6420 XFR Service Manual Option OROM Keyboard Description Access Allows you to set an option to enter the Option ROM Configuration screens using hotkeys during boot. The options are: • Enable • One Time Enable • Disable Default Setting: Enable TPM Security Allows you to enable the Trusted Platform Module (TPM) during POST. Default Setting: Disabled Computrace (R) Allows you to activate or disable the optional Computrace software.
Dell™ Latitude™ E6420 XFR Service Manual Power Management Option AC Behavior Description Allows you to enable or disable the computer from turning on automatically when an AC adapter is connected. Default Setting: Wake on AC is not selected. 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 Support Allows you to enable USB devices to wake the system from Standby.
Dell™ Latitude™ E6420 XFR Service Manual • Touchpad/PS-2 Mouse Default Setting: Touchpad/PS-2 Mouse Numlock Enable Allows you to enable the Numlock option when the computer boots. Default Setting: Enable Numlock is selected. Fn Key Emulation Allows you to set the option where the key is used to simulate the key feature. Default Setting: Enable Fn Key Emulation is selected.
Dell™ Latitude™ E6420 XFR Service Manual System Logs Option BIOS Events Description 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 Events Allows you to view and clear the Power events.
Dell™ Latitude™ E6420 XFR Service Manual 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 laptop. Alternately blinking amber light with steady blue light — Temporary battery failure with AC adapter present. Constantly blinking amber light — Fatal battery failure with AC adapter present.
