dell latitude c640 User Manual
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![Page 6
Before You Begin: Dell Latitude C540/C640 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:
(1 each)
Memory Module Cover:
(2 captive screws)
(1 each)
NOTE: The single screw is
one of the five keyboard
screws.
file:///F|/Service%20Manuals/Dell/Latitude/c540-640/begin.htm (4 of 6)\
[2/28/2004 7:57:45 AM]](http://img.usermanuals.tech/thumb/19/48083/w64_dell-latitude-c640-service-manual-5.png "Page 6
Before You Begin: Dell Latitude C540/C640 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:
(1 each)
Memory Module Cover:
(2 captive screws)
(1 each)
NOTE: The single screw is
one of the five keyboard
screws.
file:///F|/Service%20Manuals/Dell/Latitude/c540-640/begin.htm (4 of 6)\
[2/28/2004 7:57:45 AM]")
![Page 7
Before You Begin: Dell Latitude C540/C640 Service Manual
Modem to
System Board:
(2 each)
Keyboard to
Bottom Case:
(5 each)
Hinges to Bottom Case:
(5 each)
Display-Feed Flex Cable:
(4 each)
Display Bezel:
(6 each)
Rubber Screw Covers (6
each) Display Panel to Top
Cover:
(5 each)
file:///F|/Service%20Manuals/Dell/Latitude/c540-640/begin.htm (5 of 6)\
[2/28/2004 7:57:45 AM]](http://img.usermanuals.tech/thumb/19/48083/w64_dell-latitude-c640-service-manual-6.png "Page 7
Before You Begin: Dell Latitude C540/C640 Service Manual
Modem to
System Board:
(2 each)
Keyboard to
Bottom Case:
(5 each)
Hinges to Bottom Case:
(5 each)
Display-Feed Flex Cable:
(4 each)
Display Bezel:
(6 each)
Rubber Screw Covers (6
each) Display Panel to Top
Cover:
(5 each)
file:///F|/Service%20Manuals/Dell/Latitude/c540-640/begin.htm (5 of 6)\
[2/28/2004 7:57:45 AM]")
![Page 8
Before You Begin: Dell Latitude C540/C640 Service Manual
Display Latch:
(2 each) (2 each)
Palm Rest to
Bottom Case:
(3 each) (5 each)
Hybrid Cooling Fan:
(2 each) (1 each)
System Board to Bottom
Case:
(10 each)
Back to Contents Page
file:///F|/Service%20Manuals/Dell/Latitude/c540-640/begin.htm (6 of 6)\
[2/28/2004 7:57:45 AM]](http://img.usermanuals.tech/thumb/19/48083/w64_dell-latitude-c640-service-manual-7.png "Page 8
Before You Begin: Dell Latitude C540/C640 Service Manual
Display Latch:
(2 each) (2 each)
Palm Rest to
Bottom Case:
(3 each) (5 each)
Hybrid Cooling Fan:
(2 each) (1 each)
System Board to Bottom
Case:
(10 each)
Back to Contents Page
file:///F|/Service%20Manuals/Dell/Latitude/c540-640/begin.htm (6 of 6)\
[2/28/2004 7:57:45 AM]")
![Page 9
System Components: Dell Latitude C540/C640 Service Manual
Back to Contents Page
System Components
Dell™ Latitude™ C540/C640 Service Manual
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 document assumes
that a part can be replaced by performing the removal procedure in rever\
se
order....](http://img.usermanuals.tech/thumb/19/48083/w64_dell-latitude-c640-service-manual-8.png "Page 9
System Components: Dell Latitude C540/C640 Service Manual
Back to Contents Page
System Components
Dell™ Latitude™ C540/C640 Service Manual
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 document assumes
that a part can be replaced by performing the removal procedure in rever\
se
order....")
![Page 10
System Components: Dell Latitude C540/C640 Service Manual
1 display assembly 10bottom case
2 center control cover 11memory module
cover
3 microprocessor thermal
cooling assembly 12
module bay device
4 hybrid cooling fan 13main battery
5 microprocessor 14hard drive
6 system board 15left speaker
7 right speaker 16palm rest
8 modem and network-adapter
connector cover 17
keyboard
9 fan guard
Back to Contents Page
file:///F|/Service%20Manuals/Dell/Latitude/c540-640/system.htm (2 of 2)\
[2/28/2004...](http://img.usermanuals.tech/thumb/19/48083/w64_dell-latitude-c640-service-manual-9.png "Page 10
System Components: Dell Latitude C540/C640 Service Manual
1 display assembly 10bottom case
2 center control cover 11memory module
cover
3 microprocessor thermal
cooling assembly 12
module bay device
4 hybrid cooling fan 13main battery
5 microprocessor 14hard drive
6 system board 15left speaker
7 right speaker 16palm rest
8 modem and network-adapter
connector cover 17
keyboard
9 fan guard
Back to Contents Page
file:///F|/Service%20Manuals/Dell/Latitude/c540-640/system.htm (2 of 2)\
[2/28/2004...")
![Page 11
Hard Drive: Dell Latitude C540/C640 Service Manual
Back to Contents Page
Hard Drive
Dell™ Latitude™ C540/C640 Service Manual
Removing the Hard Drive
1. Save and close any open files, exit any open programs, and then shut dow\
n the computer.
NOTICE: Disconnect the computer and any attached devices from electrical
outlets, and remove any installed batteries.
NOTICE: The hard drive is very sensitive to shock. Handle the hard drive by its \
edges (do not squeeze the top of the hard drive case), and...](http://img.usermanuals.tech/thumb/19/48083/w64_dell-latitude-c640-service-manual-10.png "Page 11
Hard Drive: Dell Latitude C540/C640 Service Manual
Back to Contents Page
Hard Drive
Dell™ Latitude™ C540/C640 Service Manual
Removing the Hard Drive
1. Save and close any open files, exit any open programs, and then shut dow\
n the computer.
NOTICE: Disconnect the computer and any attached devices from electrical
outlets, and remove any installed batteries.
NOTICE: The hard drive is very sensitive to shock. Handle the hard drive by its \
edges (do not squeeze the top of the hard drive case), and...")
![Page 12
Hard Drive: Dell Latitude C540/C640 Service Manual
1 bottom of computer
2 M3 x 5-mm screw
3 hard drive door
4. Lift the hard drive door until you hear a click.
5. Slide the hard drive out of the computer.
Replacing the Hard Drive
NOTICE: Use firm and even pressure to slide the hard drive into place. If you
force the hard drive into place using excessive force, you may damage th\
e
connector.
1. Lift the hard drive door until you hear a click. Push the hard drive unt\
il it is fully seated in...](http://img.usermanuals.tech/thumb/19/48083/w64_dell-latitude-c640-service-manual-11.png "Page 12
Hard Drive: Dell Latitude C540/C640 Service Manual
1 bottom of computer
2 M3 x 5-mm screw
3 hard drive door
4. Lift the hard drive door until you hear a click.
5. Slide the hard drive out of the computer.
Replacing the Hard Drive
NOTICE: Use firm and even pressure to slide the hard drive into place. If you
force the hard drive into place using excessive force, you may damage th\
e
connector.
1. Lift the hard drive door until you hear a click. Push the hard drive unt\
il it is fully seated in...")
![Page 13
Hard Drive: Dell Latitude C540/C640 Service Manual
3. Replace the M3 x 5-mm screw in the hard drive door.
Back to Contents Page
file:///F|/Service%20Manuals/Dell/Latitude/c540-640/hdd.htm (3 of 3) [\
2/28/2004 7:57:47 AM]](http://img.usermanuals.tech/thumb/19/48083/w64_dell-latitude-c640-service-manual-12.png "Page 13
Hard Drive: Dell Latitude C540/C640 Service Manual
3. Replace the M3 x 5-mm screw in the hard drive door.
Back to Contents Page
file:///F|/Service%20Manuals/Dell/Latitude/c540-640/hdd.htm (3 of 3) [\
2/28/2004 7:57:47 AM]")
![Page 14
Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Servic\
e Manual
Back to Contents Page
Memory Modules, Mini PCI Card, and
Modem
Dell™ Latitude™ C540/C640 Service Manual
Memory Modules
Mini PCI Card
Modem
Memory Modules
Removing the Memory Module Cover
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
touching an unpainted metal...](http://img.usermanuals.tech/thumb/19/48083/w64_dell-latitude-c640-service-manual-13.png "Page 14
Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Servic\
e Manual
Back to Contents Page
Memory Modules, Mini PCI Card, and
Modem
Dell™ Latitude™ C540/C640 Service Manual
Memory Modules
Mini PCI Card
Modem
Memory Modules
Removing the Memory Module Cover
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
touching an unpainted metal...")
![Page 15
Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Servic\
e Manual
1 M2.5 x 12-mm screw
(1)
2 captive screws (2)
Removing the 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
touching an unpainted metal surface on the computer.
NOTICE: Read Preparing to Work Inside the Computer before performing the
following procedure....](http://img.usermanuals.tech/thumb/19/48083/w64_dell-latitude-c640-service-manual-14.png "Page 15
Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Servic\
e Manual
1 M2.5 x 12-mm screw
(1)
2 captive screws (2)
Removing the 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
touching an unpainted metal surface on the computer.
NOTICE: Read Preparing to Work Inside the Computer before performing the
following procedure....")
![Page 16
Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Servic\
e Manual
NOTICE: To prevent damage to the memory module connector, do not use
tools to spread the inner metal tabs that secure the memory module.
2. Use your fingertips to carefully spread apart the inner tabs on each end\
of the memory module socket. The module should pop up.
1 JDIM 2 memory socket
2 JDIM 1 memory socket
3 keying tab
4 keying notch
5 inner tabs (2 per socket)
3. Lift the memory module out of its socket....](http://img.usermanuals.tech/thumb/19/48083/w64_dell-latitude-c640-service-manual-15.png "Page 16
Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Servic\
e Manual
NOTICE: To prevent damage to the memory module connector, do not use
tools to spread the inner metal tabs that secure the memory module.
2. Use your fingertips to carefully spread apart the inner tabs on each end\
of the memory module socket. The module should pop up.
1 JDIM 2 memory socket
2 JDIM 1 memory socket
3 keying tab
4 keying notch
5 inner tabs (2 per socket)
3. Lift the memory module out of its socket....")
Hard Drive: Dell Latitude C540/C640 Service Manual Back to Contents Page Hard Drive Dell™ Latitude™ C540/C640 Service Manual Removing the Hard Drive 1. Save and close any open files, exit any open programs, and then shut dow\ n the computer. NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries. NOTICE: The hard drive is very sensitive to shock. Handle the hard drive by its \ edges (do not squeeze the top of the hard drive case), and avoid dropp\ ing it. NOTICE: Read Preparing to Work Inside the Computer before performing the following procedure. NOTICE: To prevent data loss, turn off your computer before removing the hard drive. Do not remove the hard drive while the computer is running, \ in standby mode, or in hibernate mode. CAUTION: If you remove the hard drive from the computer when the drive is hot, do not touch the metal housing of the hard drive. 2. Ground yourself by touching a metal connector on the back of the compute\ r. 3. Turn the computer over. Remove the M3 x 5-mm screw from the hard drive door. file:///F|/Service%20Manuals/Dell/Latitude/c540-640/hdd.htm (1 of 3) [\ 2/28/2004 7:57:47 AM]
Hard Drive: Dell Latitude C540/C640 Service Manual 1 bottom of computer 2 M3 x 5-mm screw 3 hard drive door 4. Lift the hard drive door until you hear a click. 5. Slide the hard drive out of the computer. Replacing the Hard Drive NOTICE: Use firm and even pressure to slide the hard drive into place. If you force the hard drive into place using excessive force, you may damage th\ e connector. 1. Lift the hard drive door until you hear a click. Push the hard drive unt\ il it is fully seated in the hard drive bay. 2. Press the hard drive door down. file:///F|/Service%20Manuals/Dell/Latitude/c540-640/hdd.htm (2 of 3) [\ 2/28/2004 7:57:47 AM]
Hard Drive: Dell Latitude C540/C640 Service Manual 3. Replace the M3 x 5-mm screw in the hard drive door. Back to Contents Page file:///F|/Service%20Manuals/Dell/Latitude/c540-640/hdd.htm (3 of 3) [\ 2/28/2004 7:57:47 AM]
Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Servic\ e Manual Back to Contents Page Memory Modules, Mini PCI Card, and Modem Dell™ Latitude™ C540/C640 Service Manual Memory Modules Mini PCI Card Modem Memory Modules Removing the Memory Module Cover 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 touching an unpainted metal surface on the computer. NOTICE: Read Preparing to Work Inside the Computer before performing the following procedure. 1. Turn the computer over and loosen the two captive screws from the memory\ module cover. 2. Remove the M2.5 x 12-mm screw labeled circle K from the memory module \ cover. (This screw is also one of the five keyboard screws.) 3. Place your finger under the cover at the indentation and lift and slide \ the cover open. file:///F|/Service%20Manuals/Dell/Latitude/c540-640/upgrades.htm (1 of \ 8) [2/28/2004 7:57:48 AM]
Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Servic\ e Manual 1 M2.5 x 12-mm screw (1) 2 captive screws (2) Removing the 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 touching an unpainted metal surface on the computer. NOTICE: Read Preparing to Work Inside the Computer before performing the following procedure. 1. Remove the memory module cover. file:///F|/Service%20Manuals/Dell/Latitude/c540-640/upgrades.htm (2 of \ 8) [2/28/2004 7:57:48 AM]
Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Servic\ e Manual NOTICE: To prevent damage to the memory module connector, do not use tools to spread the inner metal tabs that secure the memory module. 2. Use your fingertips to carefully spread apart the inner tabs on each end\ of the memory module socket. The module should pop up. 1 JDIM 2 memory socket 2 JDIM 1 memory socket 3 keying tab 4 keying notch 5 inner tabs (2 per socket) 3. Lift the memory module out of its socket. file:///F|/Service%20Manuals/Dell/Latitude/c540-640/upgrades.htm (3 of \ 8) [2/28/2004 7:57:48 AM]
Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Servic\ e Manual Replacing the Memory Modules 1. If you only have one memory module, install it in the connector labeled \ JDIM1 on the system board. Install a second memory module in the connector lab\ eled JDIM2. NOTE: Memory modules are keyed, or designed to fit into their sockets, in only\ one direction. NOTICE: The memory module must be inserted at a 45-degree angle to avoid damaging the connector. 2. Align the notch in the memory-module edge connector with the tab in the \ socket. 3. Slide the edge connector of the module firmly into the socket at a 45-degree angle, and rotate the module down until it clicks into place. \ If you do not feel the click, remove the module and reinstall it. 4. Replace the memory module cover and tighten the two captive screws. Mini PCI Card You must remove the Mini PCI card before the system board can be removed\ . Removing the Mini PCI 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 touching an unpainted metal surface on the computer. file:///F|/Service%20Manuals/Dell/Latitude/c540-640/upgrades.htm (4 of \ 8) [2/28/2004 7:57:48 AM]
Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Servic\ e Manual NOTICE: Read Preparing to Work Inside the Computer before performing the following procedure. 1. Remove the memory module cover, which also covers the Mini-PCI card. 2. Disconnect the Mini PCI card from the antenna cables. 3. To release a Mini PCI card from its socket, spread apart the metal secur\ ing tabs until the card pops up slightly. 4. Lift the Mini PCI card out of its connector. 1 antenna connectors on card (2) 2 antenna cables (2) Replacing the Mini PCI Card file:///F|/Service%20Manuals/Dell/Latitude/c540-640/upgrades.htm (5 of \ 8) [2/28/2004 7:57:48 AM]
Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Servic\ e Manual 1. Align the Mini PCI card with the socket at a 45-degree angle, and press \ the Mini PCI card into the socket. NOTICE: The connectors are keyed for correct insertion; do not force the connections. 2. Pivot the Mini PCI card down until it snaps into the inner tabs of the s\ ocket. 3. Attach the antenna cables to the Mini PCI card. 4. Replace the memory module cover and tighten the two captive screws. Modem Removing the Modem 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 touching an unpainted metal surface on the computer. NOTICE: Read Preparing to Work Inside the Computer before performing the following procedure. 1. Turn the computer over, and remove the memory module cover, which also covers the modem. 2. Remove the two M2 x 3-mm screws that secure the modem to the system board. NOTICE: Do not pull on the modem cable. Pull from the modem connector to disconnect the cable. file:///F|/Service%20Manuals/Dell/Latitude/c540-640/upgrades.htm (6 of \ 8) [2/28/2004 7:57:48 AM]
Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Servic\ e Manual 3. Pull straight up on the attached pull-tab to lift the modem out of its c\ onnector on the system board and disconnect the modem cable. 1 M2 x 3-mm screws (2) 2 modem connector 3 modem cable 4 pull-tab Replacing the Modem 1. Connect the modem cable to the modem. NOTICE: The connectors are keyed for correct insertion; do not force the connections. file:///F|/Service%20Manuals/Dell/Latitude/c540-640/upgrades.htm (7 of \ 8) [2/28/2004 7:57:48 AM]