64mcwc11.book Page 1 Tuesday, April 3, 2001 9:58 AM Dell™ Latitude™ C800 SERVICE MANUAL www.dell.com support.dell.
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64mcwc11.book Page 3 Tuesday, April 3, 2001 9:58 AM Dell™ Latitude™ C800 SERVICE MANUAL www.dell.com support.dell.
64mcwc11.book Page 4 Tuesday, April 3, 2001 9:58 AM 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 potentially hazardous situation which, if not avoided, may result in minor or moderate injury. ____________________ Information in this document is subject to change without notice.
Contents 1 Before You Begin Preparing to Work Inside the Computer . . . . . . . . . . . . . . 8 Recommended Tools . . . . . . . . . . . . . . . . . . . . . . . . 9 Screw Identification . . . . . . . . . . . . . . . . . . . . . . . . 10 2 Removing and Replacing Parts System Components Hard Drive . . . . . . . . . . . . . . . . . . . . . . . . 14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Removing the Hard Drive Replacing the Hard Drive Fixed Optical Drive . . . . . . . . . . .
Display and Bezel Assemblies . . . . . . . . . . . . . . . . . . . 26 Removing the Hinge Cover . . . . . . . . . . . . . . . . . . . 27 Removing the Display Assembly . . . Removing the Display Assembly Bezel . . . . . . . . . . . . . 28 . . . . . . . . . . . . . 30 Removing the Display Panel . . . . . . . . . . . . . . . . . . 31 Replacing the Display Panel Removing the Display Latch . . . . . . . . . . . . . . . . . . 32 . . . . . . . . . . . . . . . . . .
Replacing the LED Board Fan Assembly . . . . . . . . . . . . . . . . . . . . 52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Removing the Fan Assembly RJ-11/RJ-45 Board . . . . . . . . . . . . . . . . . . . 52 . . . . . . . . . . . . . . . . . . . . . . . . . 53 Removing the Protective Covers From the RJ-11 and RJ-45 Connectors . . . . . . . . . . . . . . . . . . Removing the RJ-11/RJ-45 Board Index . . . . . . 53 . . . . . . . . . . . . . . . 54 . . . . . . . . . . . . . . . . . . .
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64mcwc11.book Page 7 Tuesday, April 3, 2001 9:58 AM 1 SECTION 1 Before You Begin Preparing to Work Inside the Computer Recommended Tools Screw Identification w ww. d el l .c o m | su pp o r t. d e ll .
64mcwc11.book Page 8 Tuesday, April 3, 2001 9:58 AM w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Preparing to Work Inside the Computer 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 damaging the computer, perform the following steps before you begin working inside the computer.
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64mcwc11.book Page 10 Tuesday, April 3, 2001 9:58 AM w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Screw Identification When you are removing and replacing components, photocopy the placemat as a tool to lay out and keep track of the component screws.The placemat provides the number of screws and the sizes. S c re w I d e nt i fi c at i o n NOTICE: When reinstalling a screw, you must use a screw of the correct diameter and length.
64mcwc11.book Page 11 Tuesday, April 3, 2001 9:58 AM Screw Placement Map Hard Drive Door Security: M3.0 x 5 mm (1 each) Display Bezel: Rubber screw covers (4 each) Plastic screw covers (2 each) Keyboard to Bottom Case Assembly: M2.5 x 20 mm (4 each; one in memory door and one in miniPCI door) Display Panel to Display Mounting Bracket: M2.0 x 3 mm(6 each) Display to Base: M2.5 x 6 mm (3 each; 2 at back of system; 1 at flex cable strain relief) Video Graphics Board: M2.5 x 8 (3 each) M2.
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64mcwc11.book Page 13 Tuesday, April 3, 2001 9:58 AM 2 SECTION 2 Removing and Replacing Parts System Components Hard Drive Fixed Optical Drive Memory Module Mini PCI Card Assembly Keyboard Assembly Display and Bezel Assemblies Microprocessor Module Video Graphics Board Palmrest Assembly Reserve Battery System Board Assembly Battery and Modular Bay Latch Assemblies Battery Charger Board LED Board Fan Assembly RJ-11/RJ-45 Board w ww. d el l .c o m | su pp o r t. d e ll .
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64mcwc11.book Page 15 Tuesday, April 3, 2001 9:58 AM 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: Unless otherwise noted, each procedure in this manual assumes that a part can be replaced by performing the removal procedure in reverse order. Hard Drive NOTICE: Disconnect the computer and attached devices from the electrical outlet and remove any installed batteries.
64mcwc11.book Page 16 Tuesday, April 3, 2001 9:58 AM w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Removing the Hard Drive 1 Follow the instructions in “Preparing to Work Inside the Computer.” 2 Remove the drive door screw. 3 Pull the hard drive out. Replacing the Hard Drive 1 Gently push the hard drive into the drive bay until the drive door is flush with the computer case. 2 Push down on the drive until it snaps into place. 3 Replace the screw in the hard drive door.
64mcwc11.book Page 17 Tuesday, April 3, 2001 9:58 AM Removing the Fixed Optical Drive 1 Follow the instructions in “Preparing to Work Inside the Computer.” 2 Loosen the captive screw on the bottom of the computer. NOTICE: To keep the pull tab from catching on the captive screw, turn the computer over before removing the fixed optical drive. 3 Turn the computer over, pull out the pull tab, and use the pull tab to remove the fixed optical drive.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m 64mcwc11.book Page 18 Tuesday, April 3, 2001 9:58 AM 1 Follow the instructions in “Preparing to Work Inside the Computer.” 2 Remove the screw. 3 Disengage the metal tabs at the opposite end of the cover. Me mo r y Mo d u le s DIMM B memory module sockets (2) DIMM A tabs (2 per socket) Removing the Memory Modules 1 Remove the memory module cover.
64mcwc11.book Page 19 Tuesday, April 3, 2001 9:58 AM NOTE: Memory modules are keyed to fit into their sockets in only one direction. 2 Insert the memory module’s edge connector into the socket slot at a 45-degree angle and press the module firmly into the slot. 3 Pivot the module down until it clicks into place. If you do not hear a click, remove the module and reinstall it. 4 Insert the metal tabs on the memory module cover into the bottom case assembly, rotate the cover down, and replace the screw.
64mcwc11.book Page 20 Tuesday, April 3, 2001 9:58 AM w w w. d e l l . c o m | s u p p o r t . d e l l . c o m M i ni P CI Ca r d C o v er 20-mm screw Removing the Mini PCI Card Assembly 20 1 Follow the instructions in “Preparing to Work Inside the Computer.” 2 Remove the Mini PCI Card cover. 3 To release the Mini PCI Card assembly, spread the metal securing tabs until the assembly pops up slightly. 4 Disconnect the assembly from the wiring harness or internal antenna.
64mcwc11.book Page 21 Tuesday, April 3, 2001 9:58 AM Replacing the Mini PCI Card Assembly 1 Align the Mini PCI Card assembly with the socket at a 45-degree angle, and press the Mini PCI Card into the socket. 2 Depending on what type of Mini PCI Card you are installing, either connect the wiring harness to the Mini PCI Card assembly, or connect the mini-coax antenna cable from the Mini PCI Card assembly to the internal antenna.
64mcwc11.book Page 22 Tuesday, April 3, 2001 9:58 AM w w w. d e l l . c o m | s u p p o r t . d e l l . c o m M i ni - P CI Wi r e le ss N I C A sse m b ly Us in g A n te n n a C ab l e connection to internal system antenna mini-coax antenna cable outermost antenna connector on card wiring harness NOTICE: If a wireless NIC card contains two mini-coax antenna connectors, connect the mini-coax antenna cable to the outermost antenna connector on the card as shown.
64mcwc11.book Page 23 Tuesday, April 3, 2001 9:58 AM Ke yb o a rd S cr e ws 20-mm screws (4) Removing the Keyboard Assembly 1 Follow the instructions in “Preparing to Work Inside the Computer.” 2 Turn the computer over and remove the four screws labeled with a “circle K.” 3 Turn the computer over and open the display. NOTICE: Be careful when handling the keyboard. The keycaps are fragile, easily dislodged, and time-consuming to replace. 4 Use a nonmarring tool under the blank key to pry up the keyboard.
64mcwc11.book Page 24 Tuesday, April 3, 2001 9:58 AM w w w. d e l l . c o m | s u p p o r t . d e l l . c o m K ey b o ar d R em o v al scalloped edge of blank key keyboard right side of computer 24 5 Lift the right end of the keyboard and slide it slightly toward the right side of the computer to disengage the tabs at the left end. 6 Pivot the keyboard and balance it upright on the left side of the computer.
64mcwc11.book Page 25 Tuesday, April 3, 2001 9:58 AM Ke yb o a rd C ab l e keyboard cable 7 Disconnect the keyboard cable and lay the keyboard assembly aside. Replacing the Keyboard Assembly 1 While bracing the keyboard assembly upright on its left end, connect the keyboard cable to the interface connector on the system board. NOTICE: Position the keyboard/track stick flex cable so it is not pinched when you replace the keyboard in the bottom case assembly.
64mcwc11.book Page 26 Tuesday, April 3, 2001 9:58 AM w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Display and Bezel Assemblies NOTICE: Disconnect the computer and attached devices from electrical outlets and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by periodically touching unpainted metal on the computer.
64mcwc11.book Page 27 Tuesday, April 3, 2001 9:58 AM Removing the Hinge Cover Hi n g e C o ve r hinge cover 1 Follow the instructions in “Preparing to Work Inside the Computer.” 2 Use a nonmarring tool to loosen the hinge cover at the back and at each side of the computer. 3 Open the display and lift off the hinge cover.
64mcwc11.book Page 28 Tuesday, April 3, 2001 9:58 AM w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Removing the Display Assembly D i sp la y As se mb l y 6-mm screws (2) 1 Remove the hinge cover. NOTICE: Make sure you remove the flex cable before you remove the display assembly.
64mcwc11.book Page 29 Tuesday, April 3, 2001 9:58 AM F le x C ab l e 6-mm screw pull loop flex cable strain relief 2 Remove the 6-mm screw that secures the display flex cable to the strain relief, and then use the pull loop to remove the display flex cable from the graphics card. NOTICE: When reconnecting the flex cable, press down on both ends of the connector, not in the middle. Pressing the middle of the connector can damage fragile components.
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64mcwc11.book Page 31 Tuesday, April 3, 2001 9:58 AM 2 Remove the four 4-mm screws located across the top of the bezel. 3 Use a scribe at the indentations to pry out the two plastic screw covers located at the bottom of the bezel. 4 Remove the two 4-mm screws located at the bottom of the bezel. 5 Separate the bezel from the display-assembly top cover. The bezel is secured to the display assembly top cover with plastic tabs around the sides.
64mcwc11.book Page 32 Tuesday, April 3, 2001 9:58 AM w w w. d e l l . c o m | s u p p o r t . d e l l . c o m F l e x C a b l e C o n n e c t o r s o n D i s p l a y Pa n e l ZIF connector standard connector Replacing the Display Panel NOTE: Use a magnetic screwdriver to reassemble the display panel in the display. 32 1 Connect the flex cable to the two connectors on the back of the display panel.
64mcwc11.book Page 33 Tuesday, April 3, 2001 9:58 AM 3 Reinstall the 4-mm screw that secures the flex cable mounting bracket to the top cover. 4 Starting on the left side, use a magnetic screwdriver to reinstall the six 3-mm screws that secure the display panel in the top cover. 5 Reinstall the display flex cable strain-relief screw and reconnect the flex cable to the graphics card. 6 Reinstall the display assembly bezel.
64mcwc11.book Page 34 Tuesday, April 3, 2001 9:58 AM w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Microprocessor Thermal Cooling Assembly NOTICE: Disconnect the computer and attached devices from electrical outlets and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by periodically touching unpainted metal on the computer.
64mcwc11.book Page 35 Tuesday, April 3, 2001 9:58 AM 4 Insert a flat-blade screwdriver into the latch mechanism at the left side of the microprocessor retaining clip. Pry open the clip by pivoting the top of the screwdriver toward the right side of the computer.
64mcwc11.book Page 36 Tuesday, April 3, 2001 9:58 AM w w w. d e l l . c o m | s u p p o r t . d e l l . c o m M i cr o p ro c e sso r Mo d u le Removing the Microprocessor Module 1 Follow the instructions in “Preparing to Work Inside the Computer.” 2 Remove the keyboard. 3 Remove the hinge cover. NOTICE: To ensure maximum cooling for the microprocessor, do not touch the heat transfer areas on the thermal cooling assembly. The oils in your skin reduce the heat transfer capability of the thermal pads.
64mcwc11.book Page 37 Tuesday, April 3, 2001 9:58 AM M i c r op r o c e s s o r C a m L o c k S c r e w (E x a m p l e ) NOTICE: Hold the microprocessor down while turning the cam lock screw to prevent intermittent contact between the cam lock screw and microprocessor. perpendicular screwdriver cam lock screw b processor die (do not touch) Use the microprocessor extraction tool to remove the microprocessor module.
64mcwc11.book Page 38 Tuesday, April 3, 2001 9:58 AM w w w. d e l l . c o m | s u p p o r t . d e l l . c o m NOTICE: Hold the microprocessor down while turning the cam lock screw to prevent intermittent contact between the cam lock screw and microprocessor (see “Microprocessor Cam Lock Screw”). 2 Tighten the cam lock screw. NOTICE: Do not over- or undertighten the screw. Tighten it until the screw indicator points to the “closed” or “locked” indicator on the socket.
64mcwc11.book Page 39 Tuesday, April 3, 2001 9:58 AM NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by periodically touching unpainted metal on the computer. Vi d eo G ra p h ic s B o ar d 8-mm screws (3) Removing the Video Graphics Board 1 Follow the instructions in “Preparing to Work Inside the Computer.” 2 Remove the keyboard. 3 Remove the hinge cover. 4 Detach the display flex cable from the strain relief and the graphics card.
64mcwc11.book Page 40 Tuesday, April 3, 2001 9:58 AM w w w. d e l l . c o m | s u p p o r t . d e l l . c o m NOTICE: Make sure the board is correctly and firmly seated before continuing. Failure to do so will cause intermittent video failures. 2 Replace the three screws. Palmrest Assembly NOTICE: Disconnect the computer and attached devices from electrical outlets and remove any installed batteries.
64mcwc11.book Page 41 Tuesday, April 3, 2001 9:58 AM Removing the Palmrest Assembly 1 Follow the instructions in “Preparing to Work Inside the Computer.” 2 Remove the hard drive and the fixed optical drive. 3 Remove the keyboard. 4 Remove the hinge cover. 5 Remove the display assembly. NOTICE: To avoid damaging the palmrest assembly, you must first remove the display assembly. 6 Turn the computer over. 7 Remove the nine 20-mm screws (labeled with a “circle P”) that secure the palmrest to the computer.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m 64mcwc11.book Page 42 Tuesday, April 3, 2001 9:58 AM 8 Turn the computer over. 9 Use the pull loop to disconnect the palmrest flex cable from the touchpad connector on the system board. 10 Carefully lift out the palmrest assembly. Reserve Battery NOTICE: Disconnect the computer and attached devices from electrical outlets and remove any installed batteries.
64mcwc11.book Page 43 Tuesday, April 3, 2001 9:58 AM Removing the Reserve Battery 1 Follow the instructions in “Preparing to Work Inside the Computer.” 2 Remove the keyboard. 3 Remove the hinge cover. 4 Remove the display assembly. 5 Remove the palmrest assembly. 6 On the underside of the palmrest, disconnect the flex cable from the ZIF connector.
64mcwc11.book Page 44 Tuesday, April 3, 2001 9:58 AM w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Replacing the Reserve Battery 1 Seat the reserve battery and press it into place. 2 Connect the reserve battery cable. 3 Place the palmrest bracket loosely in the palmrest, and connect the palmrest flex cable to the ZIF connector. 4 Replace the two 4-mm screws that secure the palmrest bracket to the palmrest.
64mcwc11.book Page 45 Tuesday, April 3, 2001 9:58 AM The system board’s BIOS chip contains the system service tag number, which is also visible on a bar-code label on the bottom of the computer.
64mcwc11.book Page 46 Tuesday, April 3, 2001 9:58 AM w w w. d e l l . c o m | s u p p o r t . d e l l . c o m The replacement kit for the system board assembly includes a diskette or CD that provides a utility for transferring the service tag number to the replacement system board assembly. NOTICE: If you received a flash BIOS update program diskette or CD with the replacement microprocessor, you must update the BIOS after replacing the microprocessor module.
64mcwc11.book Page 47 Tuesday, April 3, 2001 9:58 AM Sy st e m B o a rd Battery and Modular Bay Latch Assemblies NOTICE: Disconnect the computer and attached devices from electrical outlets and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by periodically touching unpainted metal on the computer.
64mcwc11.book Page 48 Tuesday, April 3, 2001 9:58 AM w w w. d e l l . c o m | s u p p o r t . d e l l . c o m B a tt e r y a n d M o du l ar Ba y L a tc h A ss em b l i e s bumps slider wear ribs (2 on underside) spring location of snap tabs (2) latch buttons (2) bottom case assembly Removing and Replacing the Battery and Modular Bay Latch Assemblies 48 1 Follow the instructions in “Preparing to Work Inside the Computer.” 2 Remove the keyboard. 3 Remove the hinge cover.
64mcwc11.book Page 49 Tuesday, April 3, 2001 9:58 AM 6 Remove a latch button from the bottom case assembly by squeezing the snap tabs in the center of the latch. Apply downward pressure to the tabs while squeezing them together (tweezers work well) to eject the latch button from the bottom of the case without loosening the upper latch assembly (spring and slider).
64mcwc11.book Page 50 Tuesday, April 3, 2001 9:58 AM w w w. d e l l . c o m | s u p p o r t . d e l l . c o m B a tt e r y C h ar g er Bo a r d Removing the Battery Charger Board 1 Follow the instructions in “Preparing to Work Inside the Computer.” 2 Remove the keyboard. 3 Remove the hinge cover. 4 Remove the display assembly. 5 Remove the palmrest assembly. 6 Remove the video graphics board. 7 Lift the battery charger board out of the system board connector.
64mcwc11.book Page 51 Tuesday, April 3, 2001 9:58 AM LED Board NOTICE: Disconnect the computer and attached devices from electrical outlets and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by periodically touching unpainted metal on the computer. L ED Bo a r d 4-mm screws (2) Removing the LED Board 1 Follow the instructions in “Preparing to Work Inside the Computer.” 2 Remove the hinge cover. 3 Remove the two 4-mm screws.
64mcwc11.book Page 52 Tuesday, April 3, 2001 9:58 AM w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Replacing the LED Board 1 Align the two screw holes with the two mounting holes on the bottom case assembly, and press the board into its connector. 2 Replace the two 4-mm screws. Fan Assembly NOTICE: Disconnect the computer and attached devices from electrical outlets and remove any installed batteries.
64mcwc11.book Page 53 Tuesday, April 3, 2001 9:58 AM 5 Pull the fan assembly away from the back-panel bracket. NOTICE: When reconnecting the fan cables, connect the shorter cable to the connector closest to the fan assembly. Route both cables so that they will not be pinched by the thermal cooling assembly. RJ-11/RJ-45 Board NOTICE: Disconnect the computer and attached devices from electrical outlets and remove any installed batteries.
64mcwc11.book Page 54 Tuesday, April 3, 2001 9:58 AM w w w. d e l l . c o m | s u p p o r t . d e l l . c o m To replace a connector cover, orient the cover notch-side-up and snap it into the connector cutout. R J -1 1 /R J - 45 Bo a r d 4-mm screw Removing the RJ-11/RJ-45 Board 1 Follow the instructions in “Preparing to Work Inside the Computer.” 2 Remove the system board. 3 Remove the 4-mm screw from the RJ-11/RJ-45 board.
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Index B H battery charger board removing, 50 replacing, 50 hard drive removing, 16 replacing, 16 hinge cover, 2 7 D display and bezel assemblies (illustrated), 26 display assembly, 28 bezel, removal, 30 K keyboard assembly removing, 23 replacing, 25 display assembly bezel, 30 display assembly bezel and panel (illustrated), 3 0 L display flex cable, 29, 3 2 latch assemblies, battery and modular bay, 47 display latch, 33 display panel removing, 31 replacing, 32 F fan assembly, 5 2 fixed optical dr
58 Index T tools, recommended, 9 V video graphics board removing, 39 replacing, 39 58 Index
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64mcwc11.book Page 58 Tuesday, April 3, 2001 9:58 AM 064MCW A01 www.dell.com support.dell.com P/N 64MCW Rev. A01 Printed in the U.S.A.
