System Information Guide
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...gets wet or is when you confirm that your computer and devices from the module bay. 10 System Infor mation Guide www.dell.com | support.dell.com When Using Your Computer (continued) • Clean the display with a soft, clean cloth and water. Apply the ...water to moisture can damage the display. then stroke the cloth across the display in injury. Do not use may result in the sequence indicated. Ergonomic Computing Habits CAUTION: Improper or prolonged keyboard...
...gets wet or is when you confirm that your computer and devices from the module bay. 10 System Infor mation Guide www.dell.com | support.dell.com When Using Your Computer (continued) • Clean the display with a soft, clean cloth and water. Apply the ...water to moisture can damage the display. then stroke the cloth across the display in injury. Do not use may result in the sequence indicated. Ergonomic Computing Habits CAUTION: Improper or prolonged keyboard...
System Information Guide
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1 display latch 8 touch pad 2 display 9 battery bay 3 device status lights 10 module bay 4 air vent 11 track stick/touch pad buttons 5 keyboard status lights 12 Dell™ AccessDirect™ button 6 keyboard 13 power button 7 track stick 14 microphone Left Side View 1 23 4 56 System Infor mation Guide 17
1 display latch 8 touch pad 2 display 9 battery bay 3 device status lights 10 module bay 4 air vent 11 track stick/touch pad buttons 5 keyboard status lights 12 Dell™ AccessDirect™ button 6 keyboard 13 power button 7 track stick 14 microphone Left Side View 1 23 4 56 System Infor mation Guide 17
Service 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 ...Battery and Module Bay Latches Battery Charger Board LED Board Fan RJ-11/RJ-45 Module Pin Assignments for I/O Connectors file:///F|/Service%20Manuals/Dell/Latitude/c840/index.htm (1 of 2) [2/28/2004 8:03:26 AM]
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 ...Battery and Module Bay Latches Battery Charger Board LED Board Fan RJ-11/RJ-45 Module Pin Assignments for I/O Connectors file:///F|/Service%20Manuals/Dell/Latitude/c840/index.htm (1 of 2) [2/28/2004 8:03:26 AM]
Service Manual
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Before You Begin: Dell Latitude C840 Service Manual NOTICE: When reinstalling a screw, you must use a screw of 6) [2/28/2004 8:03:35 AM] one in memory door and one in Mini PCI ... of computer; 1 at display flex-cable strain relief) Display Bezel: Display Panel to Top Cover: file:///F|/Service%20Manuals/Dell/Latitude/c840/begin.htm (4 of the correct diameter and length. Hard-Drive Door Security: M3 x 5 mm (1 each) Keyboard to Bottom Case: M2.5 x 20 mm (4 each ) Flex-Cable Mounting Bracket to Display Mounting Bracket: Rubber screw...
Before You Begin: Dell Latitude C840 Service Manual NOTICE: When reinstalling a screw, you must use a screw of 6) [2/28/2004 8:03:35 AM] one in memory door and one in Mini PCI ... of computer; 1 at display flex-cable strain relief) Display Bezel: Display Panel to Top Cover: file:///F|/Service%20Manuals/Dell/Latitude/c840/begin.htm (4 of the correct diameter and length. Hard-Drive Door Security: M3 x 5 mm (1 each) Keyboard to Bottom Case: M2.5 x 20 mm (4 each ) Flex-Cable Mounting Bracket to Display Mounting Bracket: Rubber screw...
Service Manual
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System Components: Dell Latitude C840 Service Manual 1 display assembly 2 hinge cover 3 microprocessor thermalcooling assembly 4 system board 5 hard drive 6 bottom case 7 main battery 8 device in module bay 9 fixed optical drive 10 palm rest 11 keyboard 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 2 hinge cover 3 microprocessor thermalcooling assembly 4 system board 5 hard drive 6 bottom case 7 main battery 8 device in module bay 9 fixed optical drive 10 palm rest 11 keyboard Back to Contents Page file:///F|/Service%20Manuals/Dell/Latitude/c840/system.htm (2 of 2) [2/28/2004 8:03:36 AM]
Service Manual
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NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by periodically touching unpainted metal on the computer. Keyboard: Dell Latitude C840 Service Manual Back to Contents Page Keyboard Dell™ Latitude™ C840 Service Manual NOTICE: Disconnect the computer and attached devices from electrical outlets and remove any installed batteries. file:///F|/Service%20Manuals/Dell/Latitude/c840/keyboard.htm (1 of 5) [2/28/2004 8:03:39 AM]
NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by periodically touching unpainted metal on the computer. Keyboard: Dell Latitude C840 Service Manual Back to Contents Page Keyboard Dell™ Latitude™ C840 Service Manual NOTICE: Disconnect the computer and attached devices from electrical outlets and remove any installed batteries. file:///F|/Service%20Manuals/Dell/Latitude/c840/keyboard.htm (1 of 5) [2/28/2004 8:03:39 AM]
Service Manual
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... the blank key to replace. 4. Keyboard: Dell Latitude C840 Service Manual 1 M2.5 x 20-mm screws (4) Removing the Keyboard 1. The keycaps are fragile, easily dislodged, and time-consuming to pry up the keyboard. NOTICE: Be careful when handling the keyboard. Follow the instructions in "Preparing to Work Inside the Computer." 2. file:///F|/Service%20Manuals/Dell/Latitude/c840/keyboard.htm (2 of 5) [2/28/2004 8:03...
... the blank key to replace. 4. Keyboard: Dell Latitude C840 Service Manual 1 M2.5 x 20-mm screws (4) Removing the Keyboard 1. The keycaps are fragile, easily dislodged, and time-consuming to pry up the keyboard. NOTICE: Be careful when handling the keyboard. Follow the instructions in "Preparing to Work Inside the Computer." 2. file:///F|/Service%20Manuals/Dell/Latitude/c840/keyboard.htm (2 of 5) [2/28/2004 8:03...
Service Manual
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Lift the right end of the keyboard and slide it upright on the left end. 6. file:///F|/Service%20Manuals/Dell/Latitude/c840/keyboard.htm (3 of computer 5. Pivot the keyboard and balance it slightly toward the right side of the computer to disengage the tabs at the left side of the computer. Keyboard: Dell Latitude C840 Service Manual 1 blank key 2 keyboard 3 right side of 5) [2/28/2004 8:03:39 AM]
Lift the right end of the keyboard and slide it upright on the left end. 6. file:///F|/Service%20Manuals/Dell/Latitude/c840/keyboard.htm (3 of computer 5. Pivot the keyboard and balance it slightly toward the right side of the computer to disengage the tabs at the left side of the computer. Keyboard: Dell Latitude C840 Service Manual 1 blank key 2 keyboard 3 right side of 5) [2/28/2004 8:03:39 AM]
Service Manual
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While bracing the keyboard upright on its left end, connect the keyboard cable to the keyboard interface connector on the system board. file:///F|/Service%20Manuals/Dell/Latitude/c840/keyboard.htm (4 of 5) [2/28/2004 8:03:39 AM] Keyboard: Dell Latitude C840 Service Manual 1 keyboard cable 2 keyboard interface connector 3 system board 7. Replacing the Keyboard 1. Disconnect the keyboard cable and lay the keyboard aside.
While bracing the keyboard upright on its left end, connect the keyboard cable to the keyboard interface connector on the system board. file:///F|/Service%20Manuals/Dell/Latitude/c840/keyboard.htm (4 of 5) [2/28/2004 8:03:39 AM] Keyboard: Dell Latitude C840 Service Manual 1 keyboard cable 2 keyboard interface connector 3 system board 7. Replacing the Keyboard 1. Disconnect the keyboard cable and lay the keyboard aside.
Service Manual
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... correctly installed. For extra stability, you can open the computer slightly and brace the keyboard under the edge of 5) [2/28/2004 8:03:39 AM] Keyboard: Dell Latitude C840 Service Manual NOTICE: Position the keyboard/track-stick flex cable so that the keyboard is not pinched when you install the screw. Insert the metal tabs at the left...
... correctly installed. For extra stability, you can open the computer slightly and brace the keyboard under the edge of 5) [2/28/2004 8:03:39 AM] Keyboard: Dell Latitude C840 Service Manual NOTICE: Position the keyboard/track-stick flex cable so that the keyboard is not pinched when you install the screw. Insert the metal tabs at the left...
Service Manual
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... pivoting the top of the screwdriver toward the right side of the computer. 1 microprocessor thermalcooling assembly file:///F|/Service%20Manuals/Dell/Latitude/c840/thermal.htm (2 of the microprocessor retaining clip. Insert a non-marring plastic scribe into the latch mechanism at the ...[2/28/2004 8:03:41 AM] Remove the hinge cover. 4. Microprocessor Thermal-Cooling Assembly: Dell Latitude C840 Service Manual 2 microprocessor retaining clip Removing the Microprocessor Thermal-Cooling Assembly 1. Follow the instructions in "Preparing to Work Inside the Computer." 2. Remove the keyboard. 3.
... pivoting the top of the screwdriver toward the right side of the computer. 1 microprocessor thermalcooling assembly file:///F|/Service%20Manuals/Dell/Latitude/c840/thermal.htm (2 of the microprocessor retaining clip. Insert a non-marring plastic scribe into the latch mechanism at the ...[2/28/2004 8:03:41 AM] Remove the hinge cover. 4. Microprocessor Thermal-Cooling Assembly: Dell Latitude C840 Service Manual 2 microprocessor retaining clip Removing the Microprocessor Thermal-Cooling Assembly 1. Follow the instructions in "Preparing to Work Inside the Computer." 2. Remove the keyboard. 3.
Service Manual
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... the computer and attached devices from electrical outlets and remove any installed batteries. Remove the hinge cover. Remove the keyboard. 3. file:///F|/Service%20Manuals/Dell/Latitude/c840/cpu.htm (1 of 5) [2/28/2004 8:03:42 AM] Microprocessor Module: Dell Latitude C840 Service Manual Back to Work Inside the Computer." 2. NOTICE: To avoid ESD, ground yourself by using a wrist grounding...
... the computer and attached devices from electrical outlets and remove any installed batteries. Remove the hinge cover. Remove the keyboard. 3. file:///F|/Service%20Manuals/Dell/Latitude/c840/cpu.htm (1 of 5) [2/28/2004 8:03:42 AM] Microprocessor Module: Dell Latitude C840 Service Manual Back to Work Inside the Computer." 2. NOTICE: To avoid ESD, ground yourself by using a wrist grounding...
Service Manual
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Remove the keyboard. file:///F|/Service%20Manuals/Dell/Latitude/c840/vidbd.htm (1 of 2) [2/28/2004 8:03:42 AM] Video Graphics Board: Dell Latitude C840 Service Manual Back to Work Inside the Computer." 2. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by periodically touching unpainted metal ...
Remove the keyboard. file:///F|/Service%20Manuals/Dell/Latitude/c840/vidbd.htm (1 of 2) [2/28/2004 8:03:42 AM] Video Graphics Board: Dell Latitude C840 Service Manual Back to Work Inside the Computer." 2. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by periodically touching unpainted metal ...
Service Manual
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Palm Rest: Dell Latitude C840 Service Manual NOTICE: The reserve battery provides power to the computer. Remove the keyboard. 4. Remove the nine M2.5 x 20-mm screws (labeled "circle P") that secure the palm rest to the computer's time RTC and NVRAM when the... assembly. 6. Follow the instructions in "Preparing to lose the date and time information as well as all user-specified parameters in NVRAM. file:///F|/Service%20Manuals/Dell/Latitude/c840/palmrest.htm (2 of 4) [2/28/2004 8:03:43 AM] Removing the Palm Rest 1. Remove the hinge cover. 5. NOTICE: To avoid damaging the palm ...
Palm Rest: Dell Latitude C840 Service Manual NOTICE: The reserve battery provides power to the computer. Remove the keyboard. 4. Remove the nine M2.5 x 20-mm screws (labeled "circle P") that secure the palm rest to the computer's time RTC and NVRAM when the... assembly. 6. Follow the instructions in "Preparing to lose the date and time information as well as all user-specified parameters in NVRAM. file:///F|/Service%20Manuals/Dell/Latitude/c840/palmrest.htm (2 of 4) [2/28/2004 8:03:43 AM] Removing the Palm Rest 1. Remove the hinge cover. 5. NOTICE: To avoid damaging the palm ...
Service Manual
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... off. Remove the keyboard. 3. Remove the display assembly. 5. Remove the palm rest. 6. Follow the instructions in NVRAM. Remove the hinge cover. 4. If possible, copy the information before you remove the reserve battery. On the underside of 3) [2/28/2004 8:03:44 AM] Removing the Reserve Battery 1. file:///F|/Service%20Manuals/Dell/Latitude/c840/resbatt.htm (2 of...
... off. Remove the keyboard. 3. Remove the display assembly. 5. Remove the palm rest. 6. Follow the instructions in NVRAM. Remove the hinge cover. 4. If possible, copy the information before you remove the reserve battery. On the underside of 3) [2/28/2004 8:03:44 AM] Removing the Reserve Battery 1. file:///F|/Service%20Manuals/Dell/Latitude/c840/resbatt.htm (2 of...
Service Manual
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...modem daughter card. 6. Remove the palm rest. 10. Remove the hard drive and the fixed optical drive. 3. file:///F|/Service%20Manuals/Dell/Latitude/c840/sysboard.htm (2 of the computer. The replacement kit for the system board includes a floppy disk or CD that provides a utility ...Dell Latitude C840 Service Manual 2 system board 3 network connector 4 modem connector 5 network cable cover 6 M2.5 x 20-mm screw The BIOS chip on the system board contains the service tag sequence, which is also visible on a bar code label on the bottom of 5) [2/28/2004 8:03:45 AM] Remove the keyboard...
...modem daughter card. 6. Remove the palm rest. 10. Remove the hard drive and the fixed optical drive. 3. file:///F|/Service%20Manuals/Dell/Latitude/c840/sysboard.htm (2 of the computer. The replacement kit for the system board includes a floppy disk or CD that provides a utility ...Dell Latitude C840 Service Manual 2 system board 3 network connector 4 modem connector 5 network cable cover 6 M2.5 x 20-mm screw The BIOS chip on the system board contains the service tag sequence, which is also visible on a bar code label on the bottom of 5) [2/28/2004 8:03:45 AM] Remove the keyboard...
Service Manual
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... from the underside of the bottom case without loosening the upper latch assembly. Battery and Module Bay Latches: Dell Latitude C840 Service Manual 1 wear ribs (2 on the inside of the latch. Remove the hinge cover. 4. Remove the display... snap tabs while squeezing them together (tweezers work well) to Work Inside the Computer." 2. file:///F|/Service%20Manuals/Dell/Latitude/c840/baylatch.htm (2 of snap tabs (2) Removing and Replacing the Battery and Module Bay Latches 1. Remove the palm... housing (2) 7 latch buttons (2) 8 location of 3) [2/28/2004 8:03:46 AM] Remove the keyboard. 3.
... from the underside of the bottom case without loosening the upper latch assembly. Battery and Module Bay Latches: Dell Latitude C840 Service Manual 1 wear ribs (2 on the inside of the latch. Remove the hinge cover. 4. Remove the display... snap tabs while squeezing them together (tweezers work well) to Work Inside the Computer." 2. file:///F|/Service%20Manuals/Dell/Latitude/c840/baylatch.htm (2 of snap tabs (2) Removing and Replacing the Battery and Module Bay Latches 1. Remove the palm... housing (2) 7 latch buttons (2) 8 location of 3) [2/28/2004 8:03:46 AM] Remove the keyboard. 3.
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... Manual NOTICE: Disconnect the computer and attached devices from electrical outlets and remove any installed batteries. Remove the keyboard. 3. file:///F|/Service%20Manuals/Dell/Latitude/c840/battch.htm (1 of 2) [2/28/2004 8:03:46 AM] Battery Charger Board: Dell Latitude C840 Service Manual Back to Work Inside the Computer." 2. Removing the Battery Charger Board 1. Remove the hinge cover. NOTICE...
... Manual NOTICE: Disconnect the computer and attached devices from electrical outlets and remove any installed batteries. Remove the keyboard. 3. file:///F|/Service%20Manuals/Dell/Latitude/c840/battch.htm (1 of 2) [2/28/2004 8:03:46 AM] Battery Charger Board: Dell Latitude C840 Service Manual Back to Work Inside the Computer." 2. Removing the Battery Charger Board 1. Remove the hinge cover. NOTICE...
User Guide
Page 2
Display - About Your Computer Front View Left Side View Right Side View Back View Bottom View Front View 1 display latch 8 touch pad 2 display 9 battery bay 3 device status lights 10 module bay 4 air vent 11 touch pad/track stick buttons 5 keyboard status lights 12 Dell™ AccessDirect™ button 6 keyboard 13 power button 7 track stick 14 microphone Display Latch - For more information on using your color display, see "Using the Display." Keeps the display closed.
Display - About Your Computer Front View Left Side View Right Side View Back View Bottom View Front View 1 display latch 8 touch pad 2 display 9 battery bay 3 device status lights 10 module bay 4 air vent 11 touch pad/track stick buttons 5 keyboard status lights 12 Dell™ AccessDirect™ button 6 keyboard 13 power button 7 track stick 14 microphone Display Latch - For more information on using your color display, see "Using the Display." Keeps the display closed.
User Guide
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...: The battery charge is low. ¡ Solid orange: The battery charge is critically low. The fans may make noise, which prevents the computer from overheating. Keyboard Status Lights
...: The battery charge is low. ¡ Solid orange: The battery charge is critically low. The fans may make noise, which prevents the computer from overheating. Keyboard Status Lights