Dell Latitude C800, Service Manual

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Page 2: ...www dell com support dell com Dell Latitude C800 SERVICE MANUAL 64mcwc11 book Page 1 Tuesday April 3 2001 9 58 AM ...

Page 3: ...64mcwc11 book Page 2 Tuesday April 3 2001 9 58 AM ...

Page 4: ...www dell com support dell com Dell Latitude C800 SERVICE MANUAL 64mcwc11 book Page 3 Tuesday April 3 2001 9 58 AM ...

Page 5: ...e without notice 2000 2001 Dell Computer Corporation All rights reserved Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden Trademarks used in this text Dell the DELL logo and Latitude are trademarks of Dell Computer Corporation Other trademarks and trade names may be used in this document to refer to either the entities claiming...

Page 6: ... Replacing the Hard Drive 1 6 Fixed Optical Drive 1 6 Removing the Fixed Optical Drive 1 7 Memory Module 1 7 Removing the Memory Module Cover 1 7 Removing the Memory Modules 1 8 Replacing the Memory Modules 1 8 Mini PCI Card Assembly 1 9 Removing the Mini PCI Card Assembly 2 0 Replacing the Mini PCI Card Assembly 2 1 Keyboard Assembly 2 2 Removing the Keyboard Assembly 2 3 Replacing the Keyboard A...

Page 7: ...placing the Microprocessor Module 3 7 Video Graphics Board 3 8 Removing the Video Graphics Board 3 9 Replacing the Video Graphics Board 3 9 Palmrest Assembly 4 0 Removing the Palmrest Assembly 4 1 Reserve Battery 4 2 Removing the Reserve Battery 4 3 Replacing the Reserve Battery 4 4 System Board Assembly 4 4 Removing the System Board 4 6 Battery and Modular Bay Latch Assemblies 4 7 Removing and Re...

Page 8: ...acing the LED Board 5 2 Fan Assembly 5 2 Removing the Fan Assembly 5 2 RJ 11 RJ 45 Board 5 3 Removing the Protective Covers From the RJ 11 and RJ 45 Connectors 5 3 Removing the RJ 11 RJ 45 Board 5 4 Index 5 7 ...

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Page 10: ... w d e l l c o m s u p p o r t d e l l c o m 1 S E C TI O N 1 Before You Begin Preparing to Work Inside the Computer Recommended Tools Screw Identification 64mcwc11 book Page 7 Tuesday April 3 2001 9 58 AM ...

Page 11: ...er management mode 4 Make sure the computer is undocked 5 Disconnect the computer from the electrical outlet 6 To avoid possible damage to the system board wait 10 to 20 seconds and then disconnect any attached devices 7 Disconnect all other external cables from the computer 8 Remove any installed PC Cards or plastic blanks from the PC Card slot 9 Close the display and turn the computer upside dow...

Page 12: ... screwdriver Small flat blade screwdriver Small plastic scribe Microprocessor extractor Nonmarring tool Flash BIOS upgrade program diskette or CD provided when needed to upgrade the system BIOS Sy st e m O r ie n ta t io n front of computer back of computer left right 64mcwc11 book Page 9 Tuesday April 3 2001 9 58 AM ...

Page 13: ...ay 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 Make sure that the screw is properly aligned with its corresponding hole and avoid overtightening 64mcwc11 book Page 10 Tuesday April 3 2001 9 58 AM ...

Page 14: ...ic screw covers 2 each M2 5 x 4 mm 6 each Display Panel to Display Mounting Bracket M2 0 x 3 mm 6 each Flex Cable Mounting Bracket to Top Cover M2 5 x 4 mm 1 each Video Graphics Board M2 5 x 8 3 each Palmrest to Bottom Case Assembly M2 5 x 20 mm 9 each Palmrest Bracket M2 5 x 4 mm 2 each System Board M2 5 x 4 mm captive washer 3 each M2 5 x 20 mm 1 each LED Board M2 0 x 4 mm 2 each Fan Assembly M2...

Page 15: ...12 Before You Begin 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 12 Tuesday April 3 2001 9 58 AM ...

Page 16: ...ni PCI Card Assembly Keyboard Assembly Display and Bezel Assemblies Microprocessor Thermal Cooling Assembly 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 64mcwc11 book Page 13 Tuesday April 3 2001 9 58 AM ...

Page 17: ... l c o m System Components E x pl o d ed Vi e w display assembly keyboard palmrest assembly main battery bottom case assembly system board fixed optical drive hard drive modular device thermal cooling assembly hinge cover 64mcwc11 book Page 14 Tuesday April 3 2001 9 58 AM ...

Page 18: ...re in reverse order Hard Drive NOTICE Disconnect the computer and attached devices from the electrical outlet 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 NOTICE The hard drive is very sensitive to shock Handle it by its edges do not squeeze the top of the case and avoid dropping ...

Page 19: ... 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 Fixed Optical Drive NOTICE Disconnect the computer and attached devices from the electrical outlet 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 comp...

Page 20: ... optical drive 3 Turn the computer over pull out the pull tab and use the pull tab to remove the fixed optical drive Memory Module NOTICE Disconnect the computer and any 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 Removing the Memory Modul...

Page 21: ... 1 Remove the memory module cover 2 To release a memory module from its socket spread apart the tabs at each side of the module until the module pops up slightly 3 Lift the memory module out of its socket Replacing the Memory Modules 1 If you only have one memory module install it in the socket labeled DIMM A Install a second memory module in the socket labeled DIMM B memory module sockets 2 tabs ...

Page 22: ... Mini PCI Card Assembly You must remove the optional Mini PCI Card assembly before the system board assembly can be removed A Mini PCI Card assembly may consist of a modem a NIC a modem and NIC combination or a wireless NIC A modem NIC or modem and NIC combination must be connected to the wiring harness as appropriate a wireless NIC must be connected to the system s internal antenna NOTICE Disconn...

Page 23: ...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 5 Lift out the assembly and disconnect any attached cables 20 mm screw 64mcwc11 book Page 20 Tuesday April 3 2001 9 58 AM ...

Page 24: ...e 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 NOTICE The connectors are keyed for correct insertion do not force the connections Mi n i P C I C a rd As se mb l y U si n g W ir i ng H ar n es s wiring harness 64mcwc11 book Page 21 Tuesday April 3 200...

Page 25: ... harness into the slot so it does not interfere with the cover 3 Pivot the Mini PCI Card assembly down until it clicks into place 4 Replace the Mini PCI Card assembly cover Keyboard 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 u...

Page 26: ...he 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 20 mm screws 4 64mcwc11 book Page 23 Tuesday April 3 2001 9 58 AM ...

Page 27: ...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 keyboard scalloped edge of blank key right side of computer 64mcwc11 book Page 24 Tuesday April 3 2001 9 58 AM ...

Page 28: ...osition the keyboard track stick flex cable so it is not pinched when you replace the keyboard in the bottom case assembly 2 Insert the metal tabs at the left end of the keyboard under the edge of the bottom case assembly and fit the keyboard into place 3 Check that the keyboard is correctly installed The keys should be flush with the left and right surfaces of the palmrest 4 Reinstall the four sc...

Page 29: ...ched 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 D i sp la y As se mb l y 6 mm screws 3 hinge cover display bottom case assembly display flex cable 64mcwc11 book Page 26 Tuesday April 3 2001 9 58 AM ...

Page 30: ...r 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 hinge cover 64mcwc11 book Page 27 Tuesday April 3 2001 9 58 AM ...

Page 31: ...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 1 Remove the hinge cover NOTICE Make sure you remove the flex cable before you remove the display assembly 6 mm screws 2 64mcwc11 book Page 28 Tuesday April 3 2001 9 58 AM ...

Page 32: ... both ends of the connector not in the middle Pressing the middle of the connector can damage fragile components 3 Open the display and from the back of the computer remove the two screws labeled with a circle D that secure the display assembly to the bottom case assembly 4 With the display in an upright position lift the display assembly from the bottom case assembly 6 mm screw strain relief pull...

Page 33: ... Bezel 1 Use a scribe to pry out the four rubber screw covers located across the top of the bezel display panel top cover flex cable 4 mm screws 6 display latch rubber screw covers 4 plastic screw covers 2 3 mm screws 6 display assembly bezel hinge cover plastic tabs 6 4 mm screw flex cable mounting bracket 64mcwc11 book Page 30 Tuesday April 3 2001 9 58 AM ...

Page 34: ...ibe to help separate the bezel from the top cover Removing the Display Panel 1 Remove the hinge cover 2 Detach the display flex cable from the strain relief and the graphics card 3 Remove the display assembly bezel 4 Remove the 4 mm screw securing the plastic flex cable mounting bracket to the top cover assembly 5 Remove the six 3 mm screws three on each side from the right and left sides of the p...

Page 35: ...OTE Use a magnetic screwdriver to reassemble the display panel in the display 1 Connect the flex cable to the two connectors on the back of the display panel 2 Place the display panel assembly in the top cover taking care that the flex cable is in place and is not crushed or crimped ZIF connector standard connector 64mcwc11 book Page 32 Tuesday April 3 2001 9 58 AM ...

Page 36: ... cable strain relief screw and reconnect the flex cable to the graphics card 6 Reinstall the display assembly bezel Removing the Display Latch Re mo v i ng th e Di sp l ay L a t ch 1 Remove the hinge cover 2 Detach the display flex cable from the strain relief and the graphics card 3 Remove the display assembly bezel 4 Remove the display panel from the top cover 5 Remove the display latch by unsna...

Page 37: ...ICE To avoid ESD ground yourself by using a wrist grounding strap or by periodically touching unpainted metal on the computer R et a in i ng C li p Removing the Microprocessor Thermal Cooling Assembly 1 Follow the instructions in Preparing to Work Inside the Computer 2 Remove the keyboard 3 Remove the hinge cover microprocessor retaining clip microprocessor thermal cooling assembly 64mcwc11 book P...

Page 38: ...r do not touch the heat transfer areas on the microprocessor thermal cooling assembly The oils in your skin reduce the heat transfer capability of the thermal pads 5 Lift out the thermal cooling assembly Microprocessor Module 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 ...

Page 39: ...ility of the thermal pads 4 Remove the microprocessor thermal cooling assembly NOTICE When removing the microprocessor module pull the module straight up Do not bend the pins 5 Remove the microprocessor module NOTICE To avoid damage to the microprocessor hold the screwdriver so that it is perpendicular to the microprocessor when removing the cam lock screw see Microprocessor Cam Lock Screw a Loose...

Page 40: ...BIOS see the Dell Portable Computer BIOS Update Guide NOTICE Proper seating of the microprocessor module does not require force NOTICE A microprocessor module that is not properly seated can result in an intermittent connection and subsequent failures 1 Align the pin 1 triangle on the microprocessor toward the pin 1 triangle in the socket insert the microprocessor into the socket and move it aroun...

Page 41: ... indicator points to the closed or locked indicator on the socket 3 Replace the microprocessor thermal cooling assembly C l o si ng th e Mi c ro p r o ce ss o r Re t ai n in g Cl i p 4 While pressing lightly down on the center of the retaining clip insert a flat blade screwdriver into the latch mechanism and pivot the top of the screwdriver away from the clip to close the latch Video Graphics Boar...

Page 42: ...de 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 5 Remove the three 8 mm screws that secure the video graphics board 6 Separate the video graphics board from the system board connector Replacing the Video Graphics Board 1 Align the three screw holes and press down firmly on the word Dell to seat the board in...

Page 43: ...E To avoid ESD ground yourself by using a wrist grounding strap or by periodically touching unpainted metal on the computer P al m r es t A sse m bl y NOTICE The reserve battery provides power to the computer s time RTC and NVRAM when the computer is turned off Removing the palmrest disconnects the reserve battery and causes the computer to lose the date and time information as well as all user sp...

Page 44: ...ive 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 Pa l mr e st S c re w s 20 mm screw 9 64mcwc11 book Page 41 Tuesday April 3 2001 9 58 AM ...

Page 45: ...ies NOTICE To avoid ESD ground yourself by using a wrist grounding strap or by periodically touching unpainted metal on the computer R es er v e B a t te r y NOTICE The reserve battery provides power to the computer s RTC and NVRAM when the computer is turned off Removing the battery causes the computer to lose the date and time information as well as all user specified parameters in NVRAM If poss...

Page 46: ... the ZIF connector Pa l mr e st F l ex Ca b le an d Br a ck e t 7 Remove the two 4 mm screws securing the palmrest bracket 8 While supporting the palmrest flex cable lift out the palmrest bracket and turn it over 9 Disconnect the reserve battery cable 10 Remove the reserve battery a Pry the reserve battery free from the metal palmrest bracket b Remove the foam pad remnants from the palmrest bracke...

Page 47: ...r 4 Replace the two 4 mm screws that secure the palmrest bracket to the palmrest System Board 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 S y st em Bo a r d S c re w s 4 mm captive washer screws ...

Page 48: ...nd Replacing Parts 45 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 45 Tuesday April 3 2001 9 58 AM ...

Page 49: ...System Board 1 Follow the instructions in Preparing to Work Inside the Computer 2 Remove the hard drive and the fixed optical drive 3 Remove any installed Mini PCI Cards 4 If migrating the memory remove all installed memory modules 5 Remove the keyboard 6 Remove the hinge cover 7 Remove the display assembly 8 Remove the palmrest assembly 9 Remove the video graphics board 10 Remove the microprocess...

Page 50: ...s 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 47 Tuesday April 3 2001 9 58 AM ...

Page 51: ...Battery and Modular Bay Latch Assemblies 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 spring latch buttons 2 bottom case assembly location of snap tabs 2 bumps wear ribs 2 on underside slider 64mcwc11 book Page 48 Tuesday April 3 2001 9 58 AM ...

Page 52: ... inserted so that the side with the two bumps is facing the back of the case and the surface with the wear ribs is facing the bottom of the case 7 Hold the upper latch assembly in place while you snap the new latch button in from underneath the base making certain the snap tabs are fully engaged in the slider 8 Ensure that the newly installed latch assembly moves smoothly and freely when pushed an...

Page 53: ... 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 Replacing the Battery Charger Board Align the screw holes on the battery charger board with the screw holes on the bottom case assembly see Battery Charger Board and then press the battery charger board down into its connecto...

Page 54: ...round yourself by using a wrist grounding strap or by periodically touching unpainted metal on the computer L ED Bo a r d 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 4 Lift the LED board away from its connector 4 mm screws 2 64mcwc11 book Page 51 Tuesday April 3 2001 9 58 AM ...

Page 55: ...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 Fa n A sse m bl y Removing the Fan Assembly 1 Follow the instructions in Preparing to Work Inside the Computer 2 Remove the system board 3 Remove the three 4 mm screws from the fan assembly 4 Disconnect t...

Page 56: ...ed 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 RJ 11 a nd RJ 45 Co n n ec t o r C o ve r s Removing the Protective Covers From the RJ 11 and RJ 45 Connectors Remove a plastic connector cover if necessary by slipping a nonmarring tool into the cutou...

Page 57: ... the Computer 2 Remove the system board 3 Remove the 4 mm screw from the RJ 11 RJ 45 board NOTICE The plastic tab is fragile pull it back only far enough to remove the board assembly 4 Reach into the enclosure and while pulling the tall plastic tab away from the board assembly to release it lift out the assembly When replacing the RJ 11 RJ 45 board assembly protect the wiring harness by routing it...

Page 58: ...Removing and Replacing Parts 55 RJ 11 R J 4 5 B o ar d H a rn e ss Ro u t in g posts 64mcwc11 book Page 55 Tuesday April 3 2001 9 58 AM ...

Page 59: ...56 Removing and Replacing Parts 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 56 Tuesday April 3 2001 9 58 AM ...

Page 60: ...eyboard assembly removing 23 replacing 25 L latch assemblies battery and modular bay 47 LED board removing 51 replacing 52 M memory module removing modules 18 removing the cover 17 replacing modules 18 microprocessor module removing 36 replacing 37 microprocessor thermal cooling assembly 34 mini PCI card assembly removing 20 replacing 21 P palmrest assembly 40 palmrest flex cable 43 preparing to w...

Page 61: ...58 Index 58 Index T tools recommended 9 V video graphics board removing 39 replacing 39 ...

Page 62: ...64mcwc11 book Page 57 Tuesday April 3 2001 9 58 AM ...

Page 63: ...064MCW A01 www dell com support dell com Printed in the U S A P N 64MCW Rev A01 64mcwc11 book Page 58 Tuesday April 3 2001 9 58 AM ...