dell latitude c840 User Manual
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Dell Latitude C840 Service Manual Dell™ Latitude™ C840 Service Manual Before You Begin Preparing to Work Inside the Computer Recommended Tools Computer Orientation Screw Identification System Components Hard Drive and Fixed Optical Drive Hard Drive Fixed Optical Drive System Upgrades Memory Modules Modem Daughter Card Mini PCI Card Keyboard Display Display Overview Hinge Cover Display Assembly Display Bezel Display Panel Display Latch Microprocessor Thermal-Cooling Assembly Microprocessor...
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Before You Begin: Dell Latitude C840 Service Manual
Back to Contents Page
Before You Begin
Dell™ Latitude™ C840 Service Manual
Preparing to Work Inside the Computer
Recommended Tools
Computer Orientation
Screw Identification
Preparing to Work Inside the Computer
CAUTION: 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 warrantly. Read and follow all safety instruction\
s
in Safety and...](http://img.usermanuals.tech/thumb/19/48086/w300_dell-latitude-c840-service-manual-1.png "Page 2
Before You Begin: Dell Latitude C840 Service Manual
Back to Contents Page
Before You Begin
Dell™ Latitude™ C840 Service Manual
Preparing to Work Inside the Computer
Recommended Tools
Computer Orientation
Screw Identification
Preparing to Work Inside the Computer
CAUTION: 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 warrantly. Read and follow all safety instruction\
s
in Safety and...")
Before You Begin: Dell Latitude C840 Service Manual Back to Contents Page Before You Begin Dell™ Latitude™ C840 Service Manual Preparing to Work Inside the Computer Recommended Tools Computer Orientation Screw Identification Preparing to Work Inside the Computer CAUTION: 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 warrantly. Read and follow all safety instruction\ s in Safety and...
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Before You Begin: Dell Latitude C840 Service Manual
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 down on a flat work surfa\
ce.
10. Remove the battery from the battery bay.
NOTICE: To avoid component damage, always remove any installed batteries...](http://img.usermanuals.tech/thumb/19/48086/w300_dell-latitude-c840-service-manual-2.png "Page 3
Before You Begin: Dell Latitude C840 Service Manual
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 down on a flat work surfa\
ce.
10. Remove the battery from the battery bay.
NOTICE: To avoid component damage, always remove any installed batteries...")
Before You Begin: Dell Latitude C840 Service Manual 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 down on a flat work surfa\ ce. 10. Remove the battery from the battery bay. NOTICE: To avoid component damage, always remove any installed batteries...
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Before You Begin: Dell Latitude C840 Service Manual
Computer Orientation
Screw Identification
When you are removing and replacing components, photocopy the placemat a\
s a tool
to lay out and keep track of the component screws. The placemat provides\
the
number of screws and the sizes.
Screw Identification
file:///F|/Service%20Manuals/Dell/Latitude/c840/begin.htm (3 of 6) [2/\
28/2004 8:03:35 AM]](http://img.usermanuals.tech/thumb/19/48086/w300_dell-latitude-c840-service-manual-3.png "Page 4
Before You Begin: Dell Latitude C840 Service Manual
Computer Orientation
Screw Identification
When you are removing and replacing components, photocopy the placemat a\
s a tool
to lay out and keep track of the component screws. The placemat provides\
the
number of screws and the sizes.
Screw Identification
file:///F|/Service%20Manuals/Dell/Latitude/c840/begin.htm (3 of 6) [2/\
28/2004 8:03:35 AM]")
Before You Begin: Dell Latitude C840 Service Manual Computer Orientation Screw Identification When you are removing and replacing components, photocopy the placemat a\ s a tool to lay out and keep track of the component screws. The placemat provides\ the number of screws and the sizes. Screw Identification file:///F|/Service%20Manuals/Dell/Latitude/c840/begin.htm (3 of 6) [2/\ 28/2004 8:03:35 AM]
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Before You Begin: Dell Latitude C840 Service Manual
NOTICE: When reinstalling a screw, you must use a screw of the correct
diameter and length. Ensure that the screw is properly aligned with its \
corresponding hole, and avoid overtightening.
Hard-Drive Door Security:
M3 x 5 mm (1 each)
Keyboard to Bottom Case:
M2.5 x 20 mm (4 each; one in
memory door and one in Mini
PCI door)
Display to Bottom
Case:
M2.5 x 6 mm (3
each; 2 at back of
computer; 1 at
display flex-cable
strain relief)...](http://img.usermanuals.tech/thumb/19/48086/w300_dell-latitude-c840-service-manual-4.png "Page 5
Before You Begin: Dell Latitude C840 Service Manual
NOTICE: When reinstalling a screw, you must use a screw of the correct
diameter and length. Ensure that the screw is properly aligned with its \
corresponding hole, and avoid overtightening.
Hard-Drive Door Security:
M3 x 5 mm (1 each)
Keyboard to Bottom Case:
M2.5 x 20 mm (4 each; one in
memory door and one in Mini
PCI door)
Display to Bottom
Case:
M2.5 x 6 mm (3
each; 2 at back of
computer; 1 at
display flex-cable
strain relief)...")
Before You Begin: Dell Latitude C840 Service Manual NOTICE: When reinstalling a screw, you must use a screw of the correct diameter and length. Ensure that the screw is properly aligned with its \ corresponding hole, and avoid overtightening. Hard-Drive Door Security: M3 x 5 mm (1 each) Keyboard to Bottom Case: M2.5 x 20 mm (4 each; one in memory door and one in Mini PCI door) Display to Bottom Case: M2.5 x 6 mm (3 each; 2 at back of computer; 1 at display flex-cable strain relief)...
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Before You Begin: Dell Latitude C840 Service Manual M2.5 x 4 mm (1 each) Palm Rest to Bottom Case: M2.5 x 20 mm (9 each) Palm Rest Bracket: M2.5 x 4 mm (4 each) System Board: M2.5 x 4 mm captive washer (3 each) M2.5 x 20 mm (1 each) LED Board: M2 x 4 mm (2 each) Fan: M2 x 4 mm (3 each) Memory Module/Modem Cover: M2.5 x 20 mm (1 each) Modem Daughter Card: M2 x 3 mm (1 each) Mini PCI Card: M2.5 x 20 mm (1 each) Back to Contents Page...
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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/w300_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]")
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/w300_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]")
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/w300_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]")
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]
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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/w300_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....")
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....