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Dell Latitude C540 Service Manual

Dell latitude c540/c640 notebook service manual
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Dell Latitude C540/C640 Service Manual
Dell™ Latitude™ C540/C640 Service
Manual
Before You Begin
System Components
Hard Drive
Memory Modules, Mini PCI Card, and Modem
Keyboard
Display Assembly, Display Latch, and Hinge Covers
Palm Rest
Microprocessor Thermal Cooling Assembly
Microprocessor Module
Hybrid Cooling Fan
Reserve Battery
Flashing the BIOS
Speaker Assemblies
System Board
Battery and Module Bay Latches
Pin Assignments for I/O Connectors
Notes, Notices, and Cautions
NOTE:
A NOTE indicates important information that helps you make better use
of your computer.
NOTICE:
A NOTICE indicates either potential damage to hardware or loss of
data and tells you how to avoid the problem.
CAUTION:
personal injury, or death.
file:///F|/Service%20Manuals/Dell/Latitude/c540-640/index.htm (1 of 2) [2/28/2004 7:57:39 AM]
A CAUTION indicates a potential for property damage,

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  • Page 1 A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death. file:///F|/Service%20Manuals/Dell/Latitude/c540-640/index.htm (1 of 2) [2/28/2004 7:57:39 AM]...
  • Page 2 Dell Latitude C540/C640 Service Manual 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 the marks and names or their products. Dell Computer Corporation disclaims any proprietary interest in trademarks and trade names other than its own.

  • Page 3: Before You Begin

    System Information Guide. 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 warranty. NOTICE: To avoid damaging the computer, perform the following steps before you begin working inside the computer.

  • Page 4: Recommended Tools

    Before You Begin: Dell Latitude C540/C640 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.

  • Page 5: Computer Orientation

    Before You Begin: Dell Latitude C540/C640 Service Manual Computer Orientation 1 back 2 right 3 front 4 left Screw Identification When you are removing and replacing components, photocopy the placemat as a tool to lay out and keep track of the screws. The placemat provides the number of screws and their sizes.
  • 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:...

  • Page 7: Display Bezel

    Before You Begin: Dell Latitude C540/C640 Service Manual Modem to Keyboard to System Board: Bottom Case: (2 each) (5 each) Hinges to Bottom Case: Display-Feed Flex Cable: (5 each) (4 each) Display Bezel: Display Panel to Top Cover: (6 each)

  • Page 8: Display Latch

    Before You Begin: Dell Latitude C540/C640 Service Manual Display Latch: Palm Rest to Bottom Case: (2 each) (2 each) (3 each) (5 each) Hybrid Cooling Fan: System Board to Bottom Case: (2 each) (1 each) (10 each) Back to Contents Page...

  • Page 9: 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 reverse order.

  • Page 10: Table Of Contents

    System Components: Dell Latitude C540/C640 Service Manual 1 display assembly 10 bottom case 2 center control cover 11 memory module cover 3 microprocessor thermal 12 module bay device cooling assembly 4 hybrid cooling fan 13 main battery 5 microprocessor 14 hard drive...

  • Page 11: Hard Drive

    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 down the computer. NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries.

  • Page 12: Replacing The Hard Drive

    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.
  • 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

    Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Service 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...

  • Page 15: Removing The Memory Modules

    Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Service Manual 1 M2.5 x 12-mm screw 2 captive screws (2) Removing the Memory Modules NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries.
  • Page 16 Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Service 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.

  • Page 17: Replacing The Memory Modules

    Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Service 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 labeled "JDIM2."...

  • Page 18: Replacing The Mini Pci Card

    Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Service 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.

  • Page 19: Removing The Modem

    Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Service 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.

  • Page 20: Modem Connector

    Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Service Manual 3. Pull straight up on the attached pull-tab to lift the modem out of its connector on the system board and disconnect the modem cable. 1 M2 x 3-mm screws (2)
  • Page 21 Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Service Manual 2. Align the modem with the screw holes on the system board and press down on the pull-tab to seat the modem in the connector. NOTICE: Pressing down on the modem somewhere other than on the pull-tab can break the modem.

  • Page 22: Removing The Keyboard

    Keyboard: Dell Latitude C540/C640 Service Manual Back to Contents Page Keyboard Dell™ Latitude™ C540/C640 Service Manual Removing the Keyboard 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.
  • Page 23 Keyboard: Dell Latitude C540/C640 Service Manual 1 M2.5 x 12-mm screws 3. Turn the computer over and open the display. NOTICE: The keycaps on the keyboard are fragile, easily dislodged, and time- consuming to replace. Be careful when removing and handling the keyboard.
  • Page 24 Keyboard: Dell Latitude C540/C640 Service Manual 5. To release the keyboard from the palm rest, use a small, flat-blade screwdriver or plastic scribe to pry up the right edge of the keyboard near the blank key. file:///F|/Service%20Manuals/Dell/Latitude/c540-640/keyboard.htm (3 of 6) [2/28/2004 7:57:48 AM]...

  • Page 25: Palm Rest

    Keyboard: Dell Latitude C540/C640 Service Manual 1 keyboard 2 track stick 3 blank key 4 palm rest 6. Lift the keyboard straight up about an inch and then rotate it forward toward the front of the computer, until the key face is resting on the palm rest.

  • Page 26: Replacing The Keyboard

    Keyboard: Dell Latitude C540/C640 Service Manual 4 keyboard interface connector 5 orientation label 8. Remove the keyboard from the bottom case. Replacing the Keyboard 1. Place the keyboard on the palm rest at the front of the computer with the keys face down and the connector toward the back of the computer.
  • Page 27 Keyboard: Dell Latitude C540/C640 Service Manual Back to Contents Page file:///F|/Service%20Manuals/Dell/Latitude/c540-640/keyboard.htm (6 of 6) [2/28/2004 7:57:48 AM]...

  • Page 28: Display Assembly

    Display Assembly, Display Latch, and Hinge Covers: Dell Latitude C540/C640 Service Manual Back to Contents Page Display Assembly, Display Latch, and Hinge Covers Dell™ Latitude™ C540/C640 Service Manual Display Assembly Display Latch Hinge Covers Display Assembly NOTICE: You must remove the display assembly before you remove the palm rest.

  • Page 29: Top Cover

    Display Assembly, Display Latch, and Hinge Covers: Dell Latitude C540/C640 Service Manual 1 M2 x 3-mm screws (2) 2 top cover 3 center control cover 4 M2.5 x 5-mm screws (5) 5 bottom case 6 display-feed flex cable 7 EMI shield bracket 8.

  • Page 30: The Computer

    Display Assembly, Display Latch, and Hinge Covers: Dell Latitude C540/C640 Service Manual NOTICE: When reconnecting the display-feed flex cable connector to the system board, push down on the top left and right ends of the connector. Pressing on the center of the connector may damage resistors and compromise EMI protection in the computer.
  • Page 31 Display Assembly, Display Latch, and Hinge Covers: Dell Latitude C540/C640 Service Manual remove it from the interface connector on the system board. 10. Pivot the display assembly up to a 90-degree angle and lift it out of the bottom case.

  • Page 32: Removing The Display Bezel

    Carefully separate the bezel from the top cover to avoid damage to the bezel. 5. Starting at the bottom of the display panel (by the Dell™ logo), use your fingers to separate the bezel from the top cover by lifting the inside of the bezel while pushing in on the outside.
  • Page 33 Display Assembly, Display Latch, and Hinge Covers: Dell Latitude C540/C640 Service Manual 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"...

  • Page 34: Replacing The Display Panel

    Display Assembly, Display Latch, and Hinge Covers: Dell Latitude C540/C640 Service Manual 1 display panel connector 2 top flex cable connector 3 pull-tab 4 bottom flex cable connector 5 inverter connector 9. Remove the tape that secures the display panel connector and the tape that secures the middle of the display-feed flex cable to the display panel.

  • Page 35: Removing The Display Latch

    Display Assembly, Display Latch, and Hinge Covers: Dell Latitude C540/C640 Service Manual 1. Reconnect the top flex cable connector to the display panel connector. 2. Reconnect the bottom flex cable connector to the inverter connector. 3. Replace the tape that secures the display panel connector and the tape that secures the middle of the display-feed flex cable to the display panel.

  • Page 36: Replacing The Display Latch

    Display Assembly, Display Latch, and Hinge Covers: Dell Latitude C540/C640 Service Manual 1 M1.7 x 3.5-mm screws 2 M2.5 x 5-mm screws (2) 3 display latch 4 bracket Replacing the Display Latch 1. On XGA panels, place the display latch on top of its screw holes, and then place the bracket on top of the display latch, aligning the bracket and display latch screw holes.

  • Page 37: Hinge Covers

    Display Assembly, Display Latch, and Hinge Covers: Dell Latitude C540/C640 Service Manual Hinge Covers Removing the Hinge Covers 1. Remove the display assembly. 2. Rotate the hinges forward at an angle of approximately 90 degrees to the front of the display assembly.

  • Page 38: Right Hinge Cover

    Display Assembly, Display Latch, and Hinge Covers: Dell Latitude C540/C640 Service Manual NOTE: The right plastic hinge cover label includes an "R," and the left plastic hinge cover label includes an "L." The hinge cover labels face the back of the computer.
  • Page 39 Display Assembly, Display Latch, and Hinge Covers: Dell Latitude C540/C640 Service Manual Back to Contents Page file:///F|/Service%20Manuals/Dell/Latitude/c540-640/display.htm (12 of 12) [2/28/2004 7:57:51 AM]...

  • Page 40: Removing The Palm Rest

    Palm Rest: Dell Latitude C540/C640 Service Manual Back to Contents Page Palm Rest Dell™ Latitude™ C540/C640 Service Manual Removing the Palm Rest 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.
  • Page 41 Palm Rest: Dell Latitude C540/C640 Service Manual 1 M2.5 x 12-mm screws 2 M2 x 3-mm screws (2) 3 hard-drive bay door 5. Remove the two M2 x 3-mm screws that are located in the hard-drive bay door labeled "circle P."...
  • Page 42 Palm Rest: Dell Latitude C540/C640 Service Manual 1 M2 x 3-mm screws (3) 2 palm rest 3 palm-rest flex cable 4 bottom case 5 interface connector for palm-rest flex cable 6 back center of the palm rest NOTICE: Carefully separate the palm rest from the bottom case to avoid damage to the palm rest.
  • Page 43 Palm Rest: Dell Latitude C540/C640 Service Manual 8. Starting at the back center of the palm rest, use your fingers to separate the palm rest from the bottom case by lifting the inside of the palm rest while pushing in on the outside.

  • Page 44: Microprocessor Thermal Cooling Assembly

    Microprocessor Thermal Cooling Assembly: Dell Latitude C540/C640 Service Manual Back to Contents Page Microprocessor Thermal Cooling Assembly Dell™ Latitude™ C540/C640 Service Manual Removing the Microprocessor Thermal Cooling Assembly NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries.
  • Page 45 Microprocessor Thermal Cooling Assembly: Dell Latitude C540/C640 Service Manual 1 microprocessor thermal cooling assembly 2 captive screws (4) 3 right side of thermal cooling assembly 4 recess in EMI shield (prying location) 4. Insert a screwdriver into the recess in the EMI shield under the front left corner of the thermal cooling assembly, and pry the assembly up and out of the system board.
  • Page 46 Microprocessor Thermal Cooling Assembly: Dell Latitude C540/C640 Service Manual NOTICE: To ensure proper thermal operation, always install a new, compatible thermal cooling assembly along with a new microprocessor. 1. Place the right side of the microprocessor thermal cooling assembly under the palm rest and lower the assembly onto the system board.

  • Page 47: Microprocessor Module

    Microprocessor Module: Dell Latitude C540/C640 Service Manual Back to Contents Page Microprocessor Module Dell™ Latitude™ C540/C640 Service Manual Removing the Microprocessor 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 touching an unpainted metal surface on the computer.
  • Page 48 Microprocessor Module: Dell Latitude C540/C640 Service Manual 1 screwdriver (perpendicular to microprocessor) 2 pin-1 corner 3 processor die (do not touch) 4 ZIF socket 5 ZIF-socket cam screw 1. Remove the hard drive. 2. Remove the keyboard. NOTICE: To ensure maximum cooling for the microprocessor, do not touch the heat transfer areas on the microprocessor thermal cooling assembly.

  • Page 49: Replacing The Microprocessor Module

    Microprocessor Module: Dell Latitude C540/C640 Service Manual 3. Remove the microprocessor thermal cooling assembly. NOTICE: When removing the microprocessor module, pull the module straight up. Be careful not to bend the pins on the microprocessor module. 4. To loosen the ZIF socket, use a small, flat-blade screwdriver and rotate the ZIF- socket cam screw counter-clockwise until it reaches the cam stop.
  • Page 50 Microprocessor Module: Dell Latitude C540/C640 Service Manual NOTICE: Do not touch the processor dienear the edges of the microprocessor module (on the substrate surrounding the die) while turning the cam screw. 2. Press down on the edges of the microprocessor module and tighten the ZIF socket by turning the cam screw clockwise.

  • Page 51: Removing The Hybrid Cooling Fan

    Hybrid Cooling Fan: Dell Latitude C540/C640 Service Manual Back to Contents Page Hybrid Cooling Fan Dell™ Latitude™ C540/C640 Service Manual Removing the Hybrid Cooling Fan NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries.
  • Page 52 Hybrid Cooling Fan: Dell Latitude C540/C640 Service Manual 1 system-board interface 5 M2 x 3-mm screw connector 2 fan power cable 6 M2.5 x 5-mm screws 3 spring fingers 7 hybrid cooling fan 4 keyboard screw hole 7. Disconnect the fan power cable from the system-board interface connector and remove the hybrid cooling fan.
  • Page 53 Hybrid Cooling Fan: Dell Latitude C540/C640 Service Manual Back to Contents Page file:///F|/Service%20Manuals/Dell/Latitude/c540-640/fan.htm (3 of 3) [2/28/2004 7:57:54 AM]...

  • Page 54: Reserve Battery

    Reserve Battery: Dell Latitude C540/C640 Service Manual Back to Contents Page Reserve Battery Dell™ Latitude™ C540/C640 Service Manual Removing the Reserve Battery 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 the BIOS.

  • Page 55: Replacing The Reserve Battery

    Reserve Battery: Dell Latitude C540/C640 Service Manual 1 reserve battery 2 reserve battery tray 3 reserve battery cable 4 reserve battery connector on system board 5 speaker cables 6 opening for reserve battery cable Replacing the Reserve Battery 1. Connect the reserve battery cable to the reserve battery connector on the...
  • Page 56 Reserve Battery: Dell Latitude C540/C640 Service Manual system board and then route the battery cable through the opening in the EMI shield to the battery tray. 2. Remove the backing from the adhesive on the bottom of the reserve battery, and press the battery into place in the battery tray.

  • Page 57: Flashing The Bios

    Flashing the BIOS: Dell Latitude C540/C640 Service Manual Back to Contents Page Flashing the BIOS Dell™ Latitude™ C540/C640 Service Manual To update the basic input/output system (BIOS): 1. Ensure that the AC adapter is plugged in and that the main battery is installed properly.

  • Page 58: Speaker Assemblies

    Speaker Assemblies: Dell Latitude C540/C640 Service Manual Back to Contents Page Speaker Assemblies Dell™ Latitude™ C540/C640 Service Manual Removing the Speaker Assemblies 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.

  • Page 59: Right Speaker

    Speaker Assemblies: Dell Latitude C540/C640 Service Manual 1 right speaker 2 palm-rest screw posts 3 bottom case holders (2) 4 left speaker file:///F|/Service%20Manuals/Dell/Latitude/c540-640/speakers.htm (2 of 5) [2/28/2004 7:57:56 AM]...
  • Page 60 Speaker Assemblies: Dell Latitude C540/C640 Service Manual file:///F|/Service%20Manuals/Dell/Latitude/c540-640/speakers.htm (3 of 5) [2/28/2004 7:57:56 AM]...
  • Page 61 Speaker Assemblies: Dell Latitude C540/C640 Service Manual 1 antenna cable antenna cable 2 speaker interface cable right speaker holder 3 in-line connector mounting ring 4 left speaker 10 right speaker 5 mounting ring 11 speaker interface cable 6 left speaker holder 1.
  • Page 62 Speaker Assemblies: Dell Latitude C540/C640 Service Manual (toward the speaker grill on the side of the computer) when the speaker assembly is installed. 2. Place the mounting ring over the front palm-rest screw post. 3. Slide the speaker assembly down into the bottom case.

  • Page 63: Removing The System Board

    System Board: Dell Latitude C540/C640 Service Manual Back to Contents Page System Board Dell™ Latitude™ C540/C640 Service Manual Removing the System Board The system board's BIOS chip contains the service tag sequence, which is also visible on a bar code label on the bottom of the computer. The replacement kit for the system board includes a CD that provides a utility for transferring the service tag sequence to the replacement system board.

  • Page 64: Fan Guard

    System Board: Dell Latitude C540/C640 Service Manual 1 fan guard 2 M2.5 x 5-mm screws (9) 10. Turn the computer over and remove the M2.5 x 5-mm screw, which is labeled "circle B" with an arrow on the front center of the system board by the battery connector.

  • Page 65: Replacing The System Board

    System Board: Dell Latitude C540/C640 Service Manual 1 M2.5 x. 5-mm screw (1) 2 audio connector locations; pull outward here 11. Remove the speaker assemblies from the bottom case. 12. Pull the right side of the bottom case, next to the audio connectors, away from the system board as you simultaneously lift the front of the system board out and away from the bottom case.
  • Page 66 System Board: Dell Latitude C540/C640 Service Manual 2. Install the replacement system board: a. Insert the external microphone and headphone connectors through the bottom case. b. Replace the six M2.5 x 5-mm screws, starting on the right side of the bottom case.
  • Page 67 Battery and Module Bay Latches: Dell Latitude C540/C640 Service Manual Back to Contents Page Battery and Module Bay Latches Dell™ Latitude™ C540/C640 Service Manual Removing the Battery and Module Bay Latches NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries.
  • Page 68 Battery and Module Bay Latches: Dell Latitude C540/C640 Service Manual 1 bumps (2 per latch) 5 latch release buttons (2) 2 slider 6 snap tabs (2 per latch assembly) 3 spring 7 upper latch assemblies (2) 4 bottom case 8 wear rib Replacing the Battery and Module Bay Latches 1.
  • Page 69 Battery and Module Bay Latches: Dell Latitude C540/C640 Service Manual with the two bumps is facing the back of the case, and that the side with the wear rib is facing the front of the case. NOTE: The latch will not function properly if the slider is oriented incorrectly.

  • Page 70: Usb Connector

    Pin Assignments for I/O Connectors: Dell Latitude C540/C640 Service Manual Back to Contents Page Pin Assignments for I/O Connectors Dell™ Latitude™ C540/640 Service Manual USB Connector Signal –Data +Data Ground Serial Connector file:///F|/Service%20Manuals/Dell/Latitude/c540-640/pinouts.htm (1 of 10) [2/28/2004 7:57:58 AM]...
  • Page 71 Pin Assignments for I/O Connectors: Dell Latitude C540/C640 Service Manual Signal Signal RXDA TXDA Parallel Connector Signal Signal file:///F|/Service%20Manuals/Dell/Latitude/c540-640/pinouts.htm (2 of 10) [2/28/2004 7:57:58 AM]...

  • Page 72: Video Connector

    Pin Assignments for I/O Connectors: Dell Latitude C540/C640 Service Manual STRB#/5V BUSY/MTR# PD0/INDEX# PE/WDATA# PD1/TRK0# SLCT/WGATE# PD2/WP# AFDF# PD3/RDATA# ERROR#HDSEL# PD4/DSKCHG# INIT#/DIR# PD5F SLCT_IN#STEP# PD6F 18–23 PD7F DFDD/LPT# ACK#/DRV# Video Connector Signal Signal CRT_VCC GREEN BLUE MSEN# DAT_DDC2 HSYNC file:///F|/Service%20Manuals/Dell/Latitude/c540-640/pinouts.htm (3 of 10) [2/28/2004 7:57:58 AM]...
  • Page 73 Pin Assignments for I/O Connectors: Dell Latitude C540/C640 Service Manual VSYNC CLK_DDC2 PS/2 Connector Signal DAT_KBD DAT_SM1 PS2VCC CLK_KBD CLK_SM1 S-Video TV-Out Connector file:///F|/Service%20Manuals/Dell/Latitude/c540-640/pinouts.htm (4 of 10) [2/28/2004 7:57:58 AM]...

  • Page 74: Docking Connector

    Pin Assignments for I/O Connectors: Dell Latitude C540/C640 Service Manual S-Video Signal DLUMA-L DCRMA-L Composite Video Signal DCMPS-L Docking Connector file:///F|/Service%20Manuals/Dell/Latitude/c540-640/pinouts.htm (5 of 10) [2/28/2004 7:57:58 AM]...
  • Page 75 Pin Assignments for I/O Connectors: Dell Latitude C540/C640 Service Manual Signal Signal STRB#/5V VGA_GRN VGA_RED VGA_BLU DOCK_SD/MODE D_IRTX D_IRRX SPIRQB# DOCK_SPKR SPIRQC# DOCK_MIC DAT_DDC2 DOCK_LINE CLK_DDC2 DOCK_CDROM SPAR SPME# M_SEN# POWER_SW# SSERR# file:///F|/Service%20Manuals/Dell/Latitude/c540-640/pinouts.htm (6 of 10) [2/28/2004 7:57:58 AM]...
  • Page 76 Pin Assignments for I/O Connectors: Dell Latitude C540/C640 Service Manual QPCIEN# SPERR# S1.6M_EN# SLOCK# DFDD/LPT# SSTOP# SDEVSEL# STRDY# D_ATCTLED SIRDY# D_PWRLED SFRAME# DOCK_PWR_SRC SCLKRUN# DOCK_PWR_SRC DOCK_PWR_SRC SGNTA# SREQA# +5VDOCK SGNT0# +5VDOCK SREQ0# +5VDOCK SPCIRST# +5VDOCK SH1SEL# +5VDOCK SWRPRT# DOCK_PWR_SRC SDSKCHG#/DRQ...
  • Page 77 Pin Assignments for I/O Connectors: Dell Latitude C540/C640 Service Manual DOCK_+DC_IN SRDATA# DOCK_+DC_IN SINDEX# DOCK_+DC_IN DOCK_+DC_IN +5VALW LOW_PWR HSYNC VSYNC CLK_SPCI DOCKED SAD0 USB_VD1+ SAD1 USB_VD1– SAD2 SAD3 USB_VD2+ SAD4 USB_VD2– SAD5 DOCKOCI# SAD6 RUN_ON# SAD7 SAD8 DOCK_SCLK SC/BE0# DOCK_LRCK...
  • Page 78 Pin Assignments for I/O Connectors: Dell Latitude C540/C640 Service Manual SAD15 INIT# SAD16 SLCT_IN# SC/BE1# BUSY CD/BE2# SLCT SAD17 SAD18 DAT_SMB SAD19 DCLK_SMB SAD20 SMB_INIT# SAD21 DAT_DOCKSM1 SAD22 CLK_DOCKSM1 SAD23 DAT_DOCKKBD SAD24 CLK_DOCKKBD SC/BE3# SAD25 CTS0 SAD26 RTS0 SAD27 DSR0...
  • Page 79 Pin Assignments for I/O Connectors: Dell Latitude C540/C640 Service Manual Back to Contents Page file:///F|/Service%20Manuals/Dell/Latitude/c540-640/pinouts.htm (10 of 10) [2/28/2004 7:57:58 AM]...

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