dell latitude c840 User Manual
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![Page 7
Before You Begin: Dell Latitude C840 Service Manual
file:///F|/Service%20Manuals/Dell/Latitude/c840/begin.htm (6 of 6) [2/\
28/2004 8:03:35 AM]](http://img.usermanuals.tech/thumb/19/48086/w64_dell-latitude-c840-service-manual-6.png "Page 7
Before You Begin: Dell Latitude C840 Service Manual
file:///F|/Service%20Manuals/Dell/Latitude/c840/begin.htm (6 of 6) [2/\
28/2004 8:03:35 AM]")
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System Components: Dell Latitude C840 Service Manual
Back to Contents Page
System Components
Dell™ Latitude™ C840 Service Manual
NOTICE: Unless otherwise noted, each procedure in this document assumes
that a part can be replaced by performing the removal procedure in rever\
se
order.
file:///F|/Service%20Manuals/Dell/Latitude/c840/system.htm (1 of 2) [2\
/28/2004 8:03:36 AM]](http://img.usermanuals.tech/thumb/19/48086/w64_dell-latitude-c840-service-manual-7.png "Page 8
System Components: Dell Latitude C840 Service Manual
Back to Contents Page
System Components
Dell™ Latitude™ C840 Service Manual
NOTICE: Unless otherwise noted, each procedure in this document assumes
that a part can be replaced by performing the removal procedure in rever\
se
order.
file:///F|/Service%20Manuals/Dell/Latitude/c840/system.htm (1 of 2) [2\
/28/2004 8:03:36 AM]")
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System Components: Dell Latitude C840 Service Manual
1 display assembly 7main battery
2 hinge cover 8device in module
bay
3 microprocessor thermal-
cooling assembly 9
fixed optical drive
4 system board 10palm rest
5 hard drive 11keyboard
6 bottom case
Back to Contents Page
file:///F|/Service%20Manuals/Dell/Latitude/c840/system.htm (2 of 2) [2\
/28/2004 8:03:36 AM]](http://img.usermanuals.tech/thumb/19/48086/w64_dell-latitude-c840-service-manual-8.png "Page 9
System Components: Dell Latitude C840 Service Manual
1 display assembly 7main battery
2 hinge cover 8device in module
bay
3 microprocessor thermal-
cooling assembly 9
fixed optical drive
4 system board 10palm rest
5 hard drive 11keyboard
6 bottom case
Back to Contents Page
file:///F|/Service%20Manuals/Dell/Latitude/c840/system.htm (2 of 2) [2\
/28/2004 8:03:36 AM]")
![Page 10
Hard Drive and Fixed Optical Drive: Dell Latitude C840 Service Manual
Back to Contents Page
Hard Drive and Fixed Optical Drive
Dell™ Latitude™ C840 Service Manual
Hard Drive
Fixed Optical Drive
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.
Hard Drive
NOTICE: Disconnect the computer and attached devices from the electrical
outlet and remove any installed batteries....](http://img.usermanuals.tech/thumb/19/48086/w64_dell-latitude-c840-service-manual-9.png "Page 10
Hard Drive and Fixed Optical Drive: Dell Latitude C840 Service Manual
Back to Contents Page
Hard Drive and Fixed Optical Drive
Dell™ Latitude™ C840 Service Manual
Hard Drive
Fixed Optical Drive
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.
Hard Drive
NOTICE: Disconnect the computer and attached devices from the electrical
outlet and remove any installed batteries....")
![Page 11
Hard Drive and Fixed Optical Drive: Dell Latitude C840 Service Manual
1 bottom of computer
2 M3 x 5-mm screw
3 hard drive door
Removing the Hard Drive
1. Follow the instructions in Preparing to Work Inside the Computer.
2. Remove the M3 x 5-mm screw.
3. Pull the hard drive out.
Replacing the Hard Drive
1. Push the hard drive into the drive bay until the drive door is flush wit\
h the computer case.
file:///F|/Service%20Manuals/Dell/Latitude/c840/hdd.htm (2 of 4) [2/28\
/2004 8:03:36 AM]](http://img.usermanuals.tech/thumb/19/48086/w64_dell-latitude-c840-service-manual-10.png "Page 11
Hard Drive and Fixed Optical Drive: Dell Latitude C840 Service Manual
1 bottom of computer
2 M3 x 5-mm screw
3 hard drive door
Removing the Hard Drive
1. Follow the instructions in Preparing to Work Inside the Computer.
2. Remove the M3 x 5-mm screw.
3. Pull the hard drive out.
Replacing the Hard Drive
1. Push the hard drive into the drive bay until the drive door is flush wit\
h the computer case.
file:///F|/Service%20Manuals/Dell/Latitude/c840/hdd.htm (2 of 4) [2/28\
/2004 8:03:36 AM]")
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Hard Drive and Fixed Optical Drive: Dell Latitude C840 Service Manual
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.
3. Turn the computer over (to keep the captive screw from interfering with\
the pull tab) and pull out the pull tab.
4. Use the pull tab to remove the fixed optical drive.
Back to Contents Page
file:///F|/Service%20Manuals/Dell/Latitude/c840/hdd.htm (4 of 4)...](http://img.usermanuals.tech/thumb/19/48086/w64_dell-latitude-c840-service-manual-12.png "Page 13
Hard Drive and Fixed Optical Drive: Dell Latitude C840 Service Manual
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.
3. Turn the computer over (to keep the captive screw from interfering with\
the pull tab) and pull out the pull tab.
4. Use the pull tab to remove the fixed optical drive.
Back to Contents Page
file:///F|/Service%20Manuals/Dell/Latitude/c840/hdd.htm (4 of 4)...")
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System Upgrades: Dell Latitude C840 Service Manual
1 M2.5 x 20-mm screw
1. Follow the instructions in
Preparing to Work Inside the Computer.
2. Remove the M2.5 x 20-mm screw from the memory module/modem cover.
3. Disengage the metal tabs at the opposite end of the cover.
file:///F|/Service%20Manuals/Dell/Latitude/c840/upgrades.htm (2 of 9) \
[2/28/2004 8:03:38 AM]](http://img.usermanuals.tech/thumb/19/48086/w64_dell-latitude-c840-service-manual-14.png "Page 15
System Upgrades: Dell Latitude C840 Service Manual
1 M2.5 x 20-mm screw
1. Follow the instructions in
Preparing to Work Inside the Computer.
2. Remove the M2.5 x 20-mm screw from the memory module/modem cover.
3. Disengage the metal tabs at the opposite end of the cover.
file:///F|/Service%20Manuals/Dell/Latitude/c840/upgrades.htm (2 of 9) \
[2/28/2004 8:03:38 AM]")
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System Upgrades: Dell Latitude C840 Service Manual
1 DIMM B
2 memory module sockets
(2)
3 DIMM A socket
4 modem daughter card
5 metal tabs (2 per
socket)
Removing the Memory Modules
1. Remove the memory module/modem cover.
2. To release a memory module from its socket, spread apart the tabs at eac\
h side of the module until the module pops up slightly.
3. Lift the memory module out of its socket.
file:///F|/Service%20Manuals/Dell/Latitude/c840/upgrades.htm (3 of 9) \
[2/28/2004 8:03:38 AM]](http://img.usermanuals.tech/thumb/19/48086/w64_dell-latitude-c840-service-manual-15.png "Page 16
System Upgrades: Dell Latitude C840 Service Manual
1 DIMM B
2 memory module sockets
(2)
3 DIMM A socket
4 modem daughter card
5 metal tabs (2 per
socket)
Removing the Memory Modules
1. Remove the memory module/modem cover.
2. To release a memory module from its socket, spread apart the tabs at eac\
h side of the module until the module pops up slightly.
3. Lift the memory module out of its socket.
file:///F|/Service%20Manuals/Dell/Latitude/c840/upgrades.htm (3 of 9) \
[2/28/2004 8:03:38 AM]")
Hard Drive and Fixed Optical Drive: Dell Latitude C840 Service Manual 1 bottom of computer 2 M3 x 5-mm screw 3 hard drive door Removing the Hard Drive 1. Follow the instructions in Preparing to Work Inside the Computer. 2. Remove the M3 x 5-mm screw. 3. Pull the hard drive out. Replacing the Hard Drive 1. Push the hard drive into the drive bay until the drive door is flush wit\ h the computer case. file:///F|/Service%20Manuals/Dell/Latitude/c840/hdd.htm (2 of 4) [2/28\ /2004 8:03:36 AM]
Hard Drive and Fixed Optical Drive: Dell Latitude C840 Service Manual 2. Push down on the drive until it snaps into place. 3. Replace the M3 x 5-mm 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 computer. 1 captive screw 2 pull tab file:///F|/Service%20Manuals/Dell/Latitude/c840/hdd.htm (3 of 4) [2/28\ /2004 8:03:36 AM]
Hard Drive and Fixed Optical Drive: Dell Latitude C840 Service Manual 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. 3. Turn the computer over (to keep the captive screw from interfering with\ the pull tab) and pull out the pull tab. 4. Use the pull tab to remove the fixed optical drive. Back to Contents Page file:///F|/Service%20Manuals/Dell/Latitude/c840/hdd.htm (4 of 4) [2/28\ /2004 8:03:36 AM]
System Upgrades: Dell Latitude C840 Service Manual Back to Contents Page System Upgrades Dell™ Latitude™ C840 Service Manual Memory Modules Modem Daughter Card Mini PCI Card Memory Modules 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 Module/Modem Cover file:///F|/Service%20Manuals/Dell/Latitude/c840/upgrades.htm (1 of 9) \ [2/28/2004 8:03:38 AM]
System Upgrades: Dell Latitude C840 Service Manual 1 M2.5 x 20-mm screw 1. Follow the instructions in Preparing to Work Inside the Computer. 2. Remove the M2.5 x 20-mm screw from the memory module/modem cover. 3. Disengage the metal tabs at the opposite end of the cover. file:///F|/Service%20Manuals/Dell/Latitude/c840/upgrades.htm (2 of 9) \ [2/28/2004 8:03:38 AM]
System Upgrades: Dell Latitude C840 Service Manual 1 DIMM B 2 memory module sockets (2) 3 DIMM A socket 4 modem daughter card 5 metal tabs (2 per socket) Removing the Memory Modules 1. Remove the memory module/modem cover. 2. To release a memory module from its socket, spread apart the tabs at eac\ h side of the module until the module pops up slightly. 3. Lift the memory module out of its socket. file:///F|/Service%20Manuals/Dell/Latitude/c840/upgrades.htm (3 of 9) \ [2/28/2004 8:03:38 AM]
System Upgrades: Dell Latitude C840 Service Manual Replacing the Memory Modules 1. If you only have one memory module, install it in the socket labeled DI\ MM A. Install a second memory module in the socket labeled DIMM B. NOTE: Memory modules are keyed to fit into their sockets in only one direction\ . 2. Insert the memory-module edge connector into the socket slot at a 45-deg\ ree 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 c\ lick, remove the module and reinstall it. 4. Insert the metal tabs on the memory module/modem cover into the bottom case, rotate the cover down, and replace the M2.5 x 20-mm screw. Modem Daughter Card Removing the Modem Daughter Card 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. 1. Follow the instructions in Preparing to Work Inside the Computer. 2. Turn the computer over and remove the memory module/modem cover. file:///F|/Service%20Manuals/Dell/Latitude/c840/upgrades.htm (4 of 9) \ [2/28/2004 8:03:38 AM]
System Upgrades: Dell Latitude C840 Service Manual 1 modem daughter card 2 M2 x 3-mm screw 3. Remove the M2 x 3-mm screw that secures the modem daughter card to the system board. 4. Use the pull tab to pull the modem daughter card straight up out of its \ connector. NOTICE: Do not pull on the modem cable. Pull the connector on the end of the cable to disconnect the cable. 5. Disconnect the modem cable from the modem daughter card. Replacing the Modem Daughter Card NOTICE: The cable connectors are keyed for correct insertion. Do not force the connections. 1. Connect the modem cable to the modem daughter card. file:///F|/Service%20Manuals/Dell/Latitude/c840/upgrades.htm (5 of 9) \ [2/28/2004 8:03:38 AM]
System Upgrades: Dell Latitude C840 Service Manual 2. Use the screw and boss holes at opposite corners of the modem daughter c\ ard to align the card, and press the card into its connector on the system b\ oard. 3. Install the M2 x 3-mm screw that secures the card to the system board. 4. Replace the memory module/modem cover. Mini PCI Card You must remove the optional Mini PCI wireless modem (if installed) be\ fore the system board can be removed. A wireless modem card must be connected to \ the internal antenna of the computer. 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. Mini PCI Card Cover file:///F|/Service%20Manuals/Dell/Latitude/c840/upgrades.htm (6 of 9) \ [2/28/2004 8:03:38 AM]
System Upgrades: Dell Latitude C840 Service Manual 1 M2.5 x 20-mm screw Removing the Mini PCI Card 1. Follow the instructions in Preparing to Work Inside the Computer. 2. Remove the M2.5 x 20-mm screw and then remove the Mini PCI card cover. 3. To release the Mini PCI card, spread the metal securing tabs until the c\ ard pops up slightly. 4. Disconnect the card from the internal antenna. 5. Lift out the card and disconnect any attached cables. Replacing the Mini PCI Card 1. Align the Mini PCI card with the socket at a 45-degree angle, and press \ the Mini PCI card into the socket. file:///F|/Service%20Manuals/Dell/Latitude/c840/upgrades.htm (7 of 9) \ [2/28/2004 8:03:38 AM]