Dell E6400 XFR manuale d’uso

www.dell.com | support.dell.com Dell™ Latitude™ E6400 XFR Service Manual[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 2 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 l oss of data and tells you how to avoid the problem. CAUTION: A CAUTION indicates a potential for pr oper t[...]

Dell ™ Latitude™ E6400 XFR Servi ce Manual Page 3 Table of Contents 1  TROUBLESHOOTING .....................................................................................................................................................  7  1.1  T ROUBLESHOOTING T OOLS  ............................................................[...]

Dell ™ Latitude™ E6400 XFR Servi ce Manual Page 4 9.2  R EPLACING THE RF P ASSTHRU B OARD  ............................................................................................................................... ...  30  10  FAN ASSEMBLY  ..................................................................................[...]

Dell ™ Latitude™ E6400 XFR Servi ce Manual Page 5 23  SMARTCARD ASS EMBLY  ........................................................................................................................................  49  23.1  R EMOVING THE S MARTCARD A SSEMBLY  .....................................................................[...]

Dell ™ Latitude™ E6400 XFR Servi ce Manual Page 6 36.1  R EMOVING THE H ANDLE  ............................................................................................................................... ........................  63  36.2  R EPLACING THE H ANDLE  .............................................................[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 7 1 Troubleshooting 1.1 Troubleshooting Tools 1.1.1 Diagnostic Lights CAUTION: Before you begin any of t he procedures in this section, follow the saf ety instructions that shipped with your computer. Your computer has three keyboard status lights located above the keyboard. Duri ng normal operatio[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 8 System board failure has occurred. Contact Dell Support. A possible processor failure has occurred. Reseat the processor (see Processor Modul e ). If the problem persists, contact Dell Support. A possible graphics card/video failure has occurred. Reseat any installed graphics cards. If available,[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 9 Starting the Dell Diagnostics F rom Your Hard Drive Before running the Dell Diagnostics, en ter system setup to review your comput er’s configuration information, and ensure that the device you want to test is displayed in system setup and is active. For more information on usi n g the system s[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 10 1. Insert the Drivers and Utilities media into the optical dri ve. 2. Restart your computer. 3. When the DELL logo appears, press <F12> i mmedi ately. NOTE: Keyboard failure may result when a key is he ld down for extended periods of time. To avoid possible keyboard failure, press and rel [...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 11 thirty minutes or more to complete. When the test completes, record the test results and then press any key to return to the previous menu. After Test System is selected, the following menu appears: Option Function Express Test Performs a quick test of devices in the system. This typically can t[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 12 1.1.4 Error Messages CAUTION: Before you begin any of t he procedures in this section, follow the saf ety instructions that shipped with your computer. If the error message is not listed, see the documentation for the operating system or the program that was running when the message appeared. A [...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 13 1.2.1 Battery Problems CAUTION: There is a danger of a new battery exploding i f it is incorrectly installed. Replace the battery only with t he same or equivalent type recommend ed by the manufacturer. Discard used batteries according to the manuf acturer's instructions. 1.2.2 Drive Proble[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 14 Hard Drive Problems RUN CHECK DISK — Windows XP : 1. Click Start and click My Computer . 2. Right-click Local Disk C : . 3. Click Properties → Tools → Check Now . 4. Click Scan for and attempt recovery of bad sectors and click Start . Windows Vista : 1. Click Start and clic k Comput er . 2[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 15 The computer stops responding NOTICE: You may lose data if you are unable to perform an operating system shutdown. TURN THE COMPUTER OFF — If you are unable to get a response by pressi ng a key on your keyboard or moving your mouse, press and hold the power button for at least 8 to 10 seconds [...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 16 SAVE AND CLOS E ANY OPEN FILES OR PRO GRAMS AND SHUT DOWN YOUR COMPUTER THROUGH THE START MENU 1.2.5 Memory Problems CAUTION: Before you begin any of t he procedures in this section, follow the saf ety instructions that shipped with your computer. IF YOU RECEIVE AN INSUFF ICIENT MEMORY MESSAGE ?[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 17 ELIMINATE POSSIBLE INTERFERENCE — Turn off nearby fans, fluorescent lights, or halogen lamps to check for interference. RUN THE HARDWARE T ROUBLESHOOTER — See Hardware Troubleshooter . No Sound From Headphones CHECK THE HEADPH ONE CABLE CONNECTION — Ensure that the headph one cable is secu[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 18 Accessing the Dell S upport Utility Access the Dell Support Utility from the icon on the taskbar or from the Star t menu. If the Dell Support icon does not appear in your taskbar: 1. Click Start → All Programs → Dell Support → Dell Support Settings . 2. Ensure that the Show icon on the tas[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 19 NOTICE: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell is not covered by your warranty. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an u[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 20 9. Disconnect any external devices and remove any installed cards before working on your computer: • To remove any installed cards, such as an ExpressCard Card, see the Dell™ Technology Guide on your computer or at support.dell.com . • To undock from a docking station, see the E-Port User?[...]

Dell ™ Latitude™ E6400 XFR Servi ce Manual Page 21 3 Screw Chart S.  no  Screw  p/n  Screw  Image  Used  Assy  p/n  Description  Qty/ Assy  Total  Qty  1     SCR,PHH,PNH,M2X3,STL,  BLK  OXD,NYLOK       21010 ‐ 01  ASSY,DOOR,BTRY,B[...]

Dell ™ Latitude™ E6400 XFR Servi ce Manual Page 22 3       SCR,PHH,PNH,M2.5X8,ST L,BLK  OXD,NYLOK       21900 ‐ 10  BASE,DSC,PCMCIA,FPR,BLK,  CYN  20      21000 ‐ 03  ASSY,CHASSIS,BASE,DSC,  PRC,  PCMCIA,  BLK,CYN  2   [...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 23 NOTE: No snaps are used to attach the bottom access panel to the base. Ther e is a gasket attached to the perimeter of the bottom access pan el , and this gasket might provide some resistance during removal. 1 M2.5 x 5mm screws (21) 2 Bottom of computer 3 Battery release slider latches (2) 4.2 R[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 24 5.1 Removing the WLAN/WiMax Card 1. Follow the procedures in Before Working on Your Computer . 2. Remove the Bottom Access Panel (see Removing the Bottom Access Panel ). 3. Disconnect the antenna cables from the card. 4. Remove the M2 x 3-mm screw. The card will pop up at a 45-degr ee angl e. 1 [...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 25 1 WLAN card 2 Grey antenna cable 3 Holder by card 4 White antenna cable 5 Black antenna cable If the card has three triangles on the label (white, bl ack, and gray), connect the white antenna cable to the white triangle, connect the black antenna cable to the black tri angle, and connect the gra[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 26 5. Slide the card out of the card connector on the system board. 1 WWAN card 2 Card connector 6.2 Replacing a WWAN Card NOTICE: The connectors are keyed to ensure correct inse rtion. If you feel resistance, check the connectors on the card and on the system board, and realign the card. NOTICE: T[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 27 1 Antenna cable 2 WPAN card 3 M2 x 3-mm screw 5. Slide the card out of the card connector on the system board. 1 WPAN card 2 Card connector 7.2 Replacing a WPAN (UWB/BT) Card NOTICE: The connectors are keyed to ensure correct inse rtion. If you feel resistance, check the connectors on the card a[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 28 NOTE: The insertion of the card is considered a bli nd insert since the connector is not visible. Please take proper precautions duri ng assembly to verify connection is set before securing the card. 2. Press the card down and hold it in pl ace. 3. Replace the M2 x 3-mm screw. 4. Connect the blu[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 29 1 M2 x 3-mm screw 2 Card connector 3 FCM 8.3 Replacing a FCM NOTICE: When installing this module, ensure that the antenna cables are not under the card. Place the antenna cables in the holder next to the module. Installing the module on top of these antenna cables may cause damage to your system[...]

Dell ™ Latitude™ E6400 XFR Servi ce Manual Page 30 9 RF Passthru Board 9.1 Removing the RF Passthru Board 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 bottom access panel (see Removing t[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 31 3. Connect the antenna connections to the RF Passthru board. J1 Black – WLAN (to WLAN card) J2 Black/Red Sleeve – GPS (to GPS card) J3 Black/Grey Sleeve – WWAN (to WWAN card) J4 Black – WLAN (from LCD panel antenna) J5 Black/Grey – WWAN (from LCD panel antenna 4. Replace the bottom acc[...]

Dell ™ Latitude™ E6400 XFR Servi ce Manual Page 32 4. Disconnect the fan cable from the system board. 1 Fan 2 Fan cable 5. Lift the fan straight up to remove it. 10.2 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. Insert the fan. 2. A[...]

Dell ™ Latitude™ E6400 XFR Servi ce Manual Page 33 1 Captive screws (4) 2 Radiator 3 Processor plate 11.2 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. Place the radiator into the computer at an angle and set the proce[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 34 1 Processor module NOTICE: To avoid damage to the processor module, hold the screwdriver so that it is perpendicular to the processor when turning the cam screw. 3. To loosen the ZIF socket, use a small, flat-blade screwdriver and rotate the ZIF-socket cam screw counterclockwise until it comes t[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 35 NOTE: If a new processor is installed, you will receive a new thermal grease kit along wi th a tech sheet to illustrate proper installation. 1. Align the pin-1 corner of the processor with the pin-1 co rner of the ZIF socket, and then insert the processor. NOTE: The pin-1 corner of the processor[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 36 13.1 Removing a Memory Mo dule CAUTION: Before you begin any of t he procedures in this section, follow the saf ety instructions that shipped with your com puter. NOTICE: If two memory modules are installed, you must remove the top memory module first to access the bottom memory module. 5. Follo[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 37 1 Tab 2 Notch 3. Replace the bottom access panel (see Replacing the Bottom Access Panel ). 4. Follow the procedures in After Working on Your Computer . As the computer boots, it detects the additi onal memory and automatically updates the system config uration information. To confirm the amount [...]

Dell ™ Latitude™ E6400 XFR Servi ce Manual Page 38 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 bo ard. 2. Insert the coin-cell battery i nto the computer: If you are installing the same coin-cell battery you [...]

Dell ™ Latitude™ E6400 XFR Servi ce Manual Page 39 5. While still appl ying pressure to the left, use a plastic scribe to pry up on the left corner of the LED cover. 1 Scribe 2 LED cover 3 M2.5 x 5-mm screw (2) 6. Hooks 2and 3 are released indi vidually by using a left and upward motion. 7. Hook 4 is released by using a right and upward moti on[...]

Dell ™ Latitude™ E6400 XFR Servi ce Manual Page 40 3. After the middle is separated from the palm re st, peel the overlay from middle to left. 4. With the left half of the overlay removed, be gin to work your way from middle to right. 16.2 Replacing the Palm Rest Overlay CAUTION: Before you begin any of the procedures in this section, follow th[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 41 1 Keyboard bracket 2 Pull tab 5. Remove the keyboard bracket. NOTICE: The key caps on the keyboard are fragile, easily dislodged, and time-consuming to replace. Exercise care when removing and handling the keyboard. 6. Using the pull tab, gentl y lift the top of the keyb oard and then pull back [...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 42 1 USB cable 2 GPS passthru antenna 3 GPS module 4 GPS antenna 4. Detach the black and red RF Passthru antenna cable and the gre y GPS antenna cabl e. 5. Using a scribe, gently detach the GPS card at the upper right co rner of the card 6. Using a scribe, gently detach the GPS antenna at the upper[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 43 19.1 Removing the LCD Cable Channel Covers CAUTION: Before you begin any of t he procedures in this section, follow the saf ety instructions that shipped with your com puter. NOTE: The cable covers are not interchangeable. 1. Follow the procedures in Before Working on Your Computer . 2. Close th[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 44 4. Disconnect and unroute the display cable and the wirele ss cables (WLAN, WWAN, and WPAN). Positi on all cables to the rear of the laptop after unrouting. 1 LVDS connector & cable 2 WPAN cable 3 WLAN cable 4 WWAN cable 5. Disconnect the LVDS cable from the motherboard. 6. Disconnect the an[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 45 On the LVDS connector, rotate the blue pull-tab used to disconnect the cable from the system board to wrap the cable-side of the connector when routing through the chassis bri dge. 8. Remove the three M2.5 x 8-mm screws from each hinge. 9. Turn the computer topside up. 10. Open the display to 90[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 46 7. Install the display gaskets using your plastic scribe. Use a push motion altering sides on an in divi dual gasket until the gasket is completely inserted into the chassis bri dge. 8. Route the display cable and wi rel ess (WLAN, WWAN, and WP AN) cables. Fit the cables under each tab in their [...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 47 6. Disconnect the finger print reader cable (opti onal), the speaker cable, and the touch pad cable from the system board. 7. Lift the touch pad cable to reveal the contactless smart card cable underneath. Disconnect the contactless smartcard cable from the system board. 8. Disconnect the GPS an[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 48 21.2 Replacing the Palm Rest CAUTION: Before you begin any of t he procedures in this section, follow the saf ety instructions that shipped with your com puter. NOTE: If this is a new palm rest, remove the two cable access panels, the GPS access panel and the keyboard bracket before installation[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 49 2. Remove the bottom access panel, LCD cable channel covers, display assembly, led cover, palm rest overlay, keyboard and palm rest (see Removing the Palm Rest ). 3. Remove the M2 x 3-mm screw from the modem. 4. Use the pull tab to remove the modem from the I/O card. 5. Disconnect the modem cabl[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 50 5. Remove the smartcard connector from the system board. 6. Remove the two M2 x 3-mm screws from the smartcard housing. 1 Smartcard connector 2 M2 x 3-mm screws (2) 3 Chassis hooks (5) 7. Slide the smartcard housing to the right to disengage from the fi ve chassis hooks. 8. Lift up to remove the[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 51 sources other than Dell. 24.1 Removing the Hard Drive CAUTION: Before you begin any of t he procedures in this section, follow the saf ety instructions that shipped with your com puter. CAUTION: Do not touch the metal housing of the hard drive if you remove the hard drive from the computer while[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 52 CAUTION: Before you begin any of t he procedures in this section, follow the saf ety instructions that shipped with your com puter. NOTICE: Hard drives are extremely fragile. Exercise care when handli ng the hard drive. NOTICE: Use firm and even pressure to slide the hard drive into place. Exces[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 53 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 . 26 System Board Assembly The system board’s BIOS chip contains the Service Tag, whic h is [...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 54 1 M2.5 x 5-mm screws (8) 2 M2 x 3-mm screws (2) 3 1394 connector NOTE: Smartcard assembly removed to clarify screw locations and pinpoint system board connectors. The smartcard assembly should not be removed for system board or base ass embl y replacement. 15. Lift the back-right corner of the b[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 55 instructions that shipped with your com puter. NOTICE: Ensure that any loose cables do not get caught beneath the system board. 1. Replace the card cage to the system bo ard, before installing into the computer (see Replacing the Card Cage ). 2. Replace the gasket for the multi-mode di spl ay po[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 56 NOTE: Do NOT remove the two screws on the upper back corners of the card cage. They are used for retaining the card cage to the card extender board. 5. Detach the card extender board from the card socket by lifting the detached clips to clear the card socket and sliding the card cage from the ca[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 57 28.1 Removing the 1394 Card CAUTION: Before you begin any of the procedures in this section, fo llow t he safety instructions that shipped with your computer. 1. Follow the instructions in Before Working on Your Computer . 2. Remove the card cage (see Removing the Card Cage ). 3. Remove the two [...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 58 3. Detach the tape and SIM card extension cable from the orig inal SIM slot l ocated on the left side of the battery bay, and place it out of the way. 4. Detach the Wi-Fi sniffer cable from the system board. 5. Using a scribe, gently pl ace the edge under the SIM board and pry up. NOTE: Light fo[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 59 2. Remove the bottom access panel, LCD cable channel covers, display assembly, led cover, palm rest overlay, keyboard and palm rest (see Removing the Palm Rest ). 3. Detach the Wi-Fi Sniffer cable from the motherboard. 4. Remove the M2 x 3-mm screw from the modem. 5. Detach the modem, and then r[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 60 31.1 Removing the I/O Card CAUTION: Before you begin any of the procedures in this section, fo llow t he safety instructions that shipped with your com puter. 1. Follow the procedures in Before Working on Your Computer . 2. Remove the system board (see Removing the System Board Assembly ). 3. Re[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 61 CAUTION: Before you begin any of t he procedures in this section, follow the saf ety instructions that shipped with your com puter. 1. Place the RJ-11 modem connector i n to the base assembl y , aligning the gui de s on the connector sides with the base. Once installed, press down firmly on top [...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 62 33.2 Replacing the DC Power Cable CAUTION: Before you begin any of t he procedures in this section, follow the saf ety instructions that shipped with your com puter. 1. Place the DC power cable in the base assembly, aligning the gui des on the connector sides with the base. Once installed, press[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 63 35.2 Replacing the Styl us 1. Pinch the end of the tether loop to a point. 2. Place the tether loop, pointed end fi rst, 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 tether are completely through the te ther loo[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 64 5. Remove the carry handle from the sockets and slide out of the notebook. 36.2 Replacing the Handle 1. Insert the carry handle pinion into the sockets on the base of the notebook. 1 Handle pi nion 2 Tab socket NOTICE: Image above has palm rest removed to show tab socket close-up. Duri ng instal[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 65 2. Open the door to relieve hinge pressure . 3. Remove the three M3 x 3-mm screws from the bottom of the base assembly 37.2 Replacing Media Bay Door 1. Insert door hinge onto assembly and align the hi nge divots. 2. Insert the three M3 x 3-mm screws and fi t securel y. 3. Follow the procedures i[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 66 37.4 Replacing the AV Door 1. Insert door hinge onto assembly and align the hi nge divots. 2. Replace the two M3 x 3-mm screws. 3. Follow the procedures in After Working on Your Computer . 37.5 Removing the AV Panel Cover 1. Follow the procedures in Before Working on Your Computer . 2. Open the [...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 67 the wireless circuit. It is advised to check these options as soon as possible. See Replaci n g the Wi-Fi Sniffer Card for details. 37.7 Removing the RJ11 Door Parts Location 1 Door 2 M2.5 x 5-mm (2) 1. Follow the procedures in Before Working on Your Computer . 2. Open the door to relieve hinge [...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 68 3. Follow the procedures in After Working on Your Computer . 37.9 Removing the Battery Door 1. Follow the procedures in Before Working on Your Computer . 2. Open the door to relieve hinge pressure . 3. Remove the four M3 x 3-mm screws from the bottom of the base assembly. 37.10 Replacing the Bat[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 69 1 Door 2 M2.5 x 5-mm (2) 1. Follow the procedures in Before Working on Your Computer . 2. Open the door to relieve hinge pressure . 3. Remove the two M2.5 x 5-mm screws from the bottom of the base assembly 37.12 Replacing the Power Doo r 1. Insert door hinge onto assembly and align the hi nge di[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 70 1 Door 2 M3 x 3 mm (2) 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. 37.14 Replacing the VGA Door 1. Insert door hinge onto assembly and align the hi nge divots. [...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 71 3. Remove the two VGA Connector socket screws. 4. Place a scribe in the small opening and pull to remove. 37.16 Replacing the VGA Panel Cover 1. Place the VGA Panel Cover in place over the VGA port. 2. Replace the two VGA connector socket screws. 3. Follow the procedures in After Working on Your[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 72 3. Follow the procedures in After Working on Your Computer . 37.19 Removing the SD Card Door Parts Location 1 Door 2 M2.5 x 5-mm (2) 1. Follow the procedures in Before Working on Your Computer . 2. Open the door to relieve hinge pressure . 3. Remove the handle (see Removing the Handle) 4. Remove[...]

Dell ™ Latitude™ E6400 XFR Service Manual Page 73 3. Replace the handle (see Repl aci ng the Handle) 4. Follow the procedures in After Working on Your Computer .[...]