Dell Latitude C640 Service Manual Page 1

Dell Latitude C540/C640 Service ManualDell™ Latitude™ C540/C640 Service ManualBefore You BeginSystem ComponentsHard DriveMemory Modules, Mini PCI Card

System Components: Dell Latitude C540/C640 Service Manual 1 display assembly 10 bottom case2 center control cover 11 memory module cover3 microprocess

Hard Drive: Dell Latitude C540/C640 Service ManualBack to Contents Page Hard Drive Dell™ Latitude™ C540/C640 Service ManualRemoving the Hard Drive 1.

Hard Drive: Dell Latitude C540/C640 Service Manual 1 bottom of computer2 M3 x 5-mm screw3 hard drive door4. Lift the hard drive door until you hear a

Hard Drive: Dell Latitude C540/C640 Service Manual3. Replace the M3 x 5-mm screw in the hard drive door. Back to Contents Page file:///F|/Service%20M

Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Service ManualBack to Contents Page Memory Modules, Mini PCI Card, and Modem Dell™ L

Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Service Manual 1 M2.5 x 12-mm screw (1)2 captive screws (2)Removing the Memory Modul

Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Service ManualNOTICE: To prevent damage to the memory module connector, do not use t

Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Service ManualReplacing the Memory Modules 1. If you only have one memory module, i

Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Service ManualNOTICE: Read "Preparing to Work Inside the Computer" before

Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Service Manual1. Align the Mini PCI card with the socket at a 45-degree angle, and

Dell Latitude C540/C640 Service ManualTrademarks used in this text: Dell, the DELL logo, and Latitude are trademarks of Dell Computer Corporation.Othe

Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Service Manual3. Pull straight up on the attached pull-tab to lift the modem out of

Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Service Manual2. Align the modem with the screw holes on the system board and press

Keyboard: Dell Latitude C540/C640 Service ManualBack to Contents Page Keyboard Dell™ Latitude™ C540/C640 Service ManualRemoving the Keyboard NOTICE: D

Keyboard: Dell Latitude C540/C640 Service Manual 1 M2.5 x 12-mm screws (5)3. Turn the computer over and open the display. NOTICE: The keycaps on the

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

Keyboard: Dell Latitude C540/C640 Service Manual1 keyboard2 track stick3 blank key4 palm rest 6. Lift the keyboard straight up a

Keyboard: Dell Latitude C540/C640 Service Manual4 keyboard interface connector5 orientation label8. Remove the keyboard from the bottom case. Replaci

Keyboard: Dell Latitude C540/C640 Service ManualBack to Contents Page file:///F|/Service%20Manuals/Dell/Latitude/c540-640/keyboard.htm (6 of 6) [2/28/

Display Assembly, Display Latch, and Hinge Covers: Dell Latitude C540/C640 Service ManualBack to Contents Page Display Assembly, Display Latch, and Hi

Display Assembly, Display Latch, and Hinge Covers: Dell Latitude C540/C640 Service Manual 1 M2 x 3-mm screws (2)2 top cover3 center control cover4 M2.

Before You Begin: Dell Latitude C540/C640 Service ManualBack to Contents Page Before You Begin Dell™ Latitude™ C540/C640 Service Manual Preparing to

Display Assembly, Display Latch, and Hinge Covers: Dell Latitude C540/C640 Service ManualNOTICE: When reconnecting the display-feed flex cable connect

Display Assembly, Display Latch, and Hinge Covers: Dell Latitude C540/C640 Service Manualremove it from the interface connector on the system board. 1

Display Assembly, Display Latch, and Hinge Covers: Dell Latitude C540/C640 Service Manual1 rubber screw covers (6)5 M2 x 4-mm screws (5)2 M2.5 x 5-mm

Display Assembly, Display Latch, and Hinge Covers: Dell Latitude C540/C640 Service ManualNOTICE: To avoid ESD, ground yourself by using a wrist ground

Display Assembly, Display Latch, and Hinge Covers: Dell Latitude C540/C640 Service Manual 1 display panel connector2 top flex cable connector3 pull-ta

Display Assembly, Display Latch, and Hinge Covers: Dell Latitude C540/C640 Service Manual1. Reconnect the top flex cable connector to the display pan

Display Assembly, Display Latch, and Hinge Covers: Dell Latitude C540/C640 Service Manual 1 M1.7 x 3.5-mm screws (2)2 M2.5 x 5-mm screws (2)3 display

Display Assembly, Display Latch, and Hinge Covers: Dell Latitude C540/C640 Service ManualHinge CoversRemoving the Hinge Covers 1. Remove the display

Display Assembly, Display Latch, and Hinge Covers: Dell Latitude C540/C640 Service ManualNOTE: The right plastic hinge cover label includes an "R

Display Assembly, Display Latch, and Hinge Covers: Dell Latitude C540/C640 Service ManualBack to Contents Page file:///F|/Service%20Manuals/Dell/Latit

Before You Begin: Dell Latitude C540/C640 Service Manual6. To avoid possible damage to the system board, wait 10 to 20 seconds and then disconnect an

Palm Rest: Dell Latitude C540/C640 Service ManualBack to Contents Page Palm Rest Dell™ Latitude™ C540/C640 Service ManualRemoving the Palm Rest NOTICE

Palm Rest: Dell Latitude C540/C640 Service Manual 1 M2.5 x 12-mm screws (3)2 M2 x 3-mm screws (2)3 hard-drive bay door5. Remove the two M2 x 3-mm scr

Palm Rest: Dell Latitude C540/C640 Service Manual 1 M2 x 3-mm screws (3)2 palm rest3 palm-rest flex cable4 bottom case5 interface connector for palm-r

Palm Rest: Dell Latitude C540/C640 Service Manual8. Starting at the back center of the palm rest, use your fingers to separate the palm rest from the

Microprocessor Thermal Cooling Assembly: Dell Latitude C540/C640 Service ManualBack to Contents Page Microprocessor Thermal Cooling Assembly Dell™ Lat

Microprocessor Thermal Cooling Assembly: Dell Latitude C540/C640 Service Manual 1 microprocessor thermal cooling assembly2 captive screws (4)3 right s

Microprocessor Thermal Cooling Assembly: Dell Latitude C540/C640 Service ManualNOTICE: To ensure proper thermal operation, always install a new, compa

Microprocessor Module: Dell Latitude C540/C640 Service ManualBack to Contents Page Microprocessor Module Dell™ Latitude™ C540/C640 Service ManualRemov

Microprocessor Module: Dell Latitude C540/C640 Service Manual 1 screwdriver (perpendicular to microprocessor)2 pin-1 corner3 processor die (do not tou

Microprocessor Module: Dell Latitude C540/C640 Service Manual3. Remove the microprocessor thermal cooling assembly. NOTICE: When removing the micropr

Before You Begin: Dell Latitude C540/C640 Service ManualComputer Orientation 1 back2 right3 front4 left Screw Identi

Microprocessor Module: Dell Latitude C540/C640 Service ManualNOTICE: Do not touch the processor dienear the edges of the microprocessor module (on the

Hybrid Cooling Fan: Dell Latitude C540/C640 Service ManualBack to Contents Page Hybrid Cooling Fan Dell™ Latitude™ C540/C640 Service ManualRemoving th

Hybrid Cooling Fan: Dell Latitude C540/C640 Service Manual 1 system-board interface connector5 M2 x 3-mm screw (1)2 fan power cable 6 M2.5 x 5-mm scre

Hybrid Cooling Fan: Dell Latitude C540/C640 Service ManualBack to Contents Page file:///F|/Service%20Manuals/Dell/Latitude/c540-640/fan.htm (3 of 3) [

Reserve Battery: Dell Latitude C540/C640 Service ManualBack to Contents Page Reserve Battery Dell™ Latitude™ C540/C640 Service ManualRemoving the Rese

Reserve Battery: Dell Latitude C540/C640 Service Manual 1 reserve battery2 reserve battery tray3 reserve battery cable4 reserve battery connector on s

Reserve Battery: Dell Latitude C540/C640 Service Manualsystem board and then route the battery cable through the opening in the EMI shield to the batt

Flashing the BIOS: Dell Latitude C540/C640 Service ManualBack to Contents Page Flashing the BIOS Dell™ Latitude™ C540/C640 Service ManualTo update the

Speaker Assemblies: Dell Latitude C540/C640 Service ManualBack to Contents Page Speaker Assemblies Dell™ Latitude™ C540/C640 Service ManualRemoving th

Speaker Assemblies: Dell Latitude C540/C640 Service Manual 1 right speaker2 palm-rest screw posts (2)3 bottom case holders (2)4 left speakerfile:///F|

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. E

Speaker Assemblies: Dell Latitude C540/C640 Service Manual file:///F|/Service%20Manuals/Dell/Latitude/c540-640/speakers.htm (3 of 5) [2/28/2004 7:57:5

Speaker Assemblies: Dell Latitude C540/C640 Service Manual1 antenna cable 7 antenna cable2 speaker interface cable 8 right speaker holder3 in-line con

Speaker Assemblies: Dell Latitude C540/C640 Service Manual(toward the speaker grill on the side of the computer) when the speaker assembly is installe

System Board: Dell Latitude C540/C640 Service ManualBack to Contents Page System Board Dell™ Latitude™ C540/C640 Service ManualRemoving the System Boa

System Board: Dell Latitude C540/C640 Service Manual 1 fan guard2 M2.5 x 5-mm screws (9)10. Turn the computer over and remove the M2.5 x 5-mm screw,

System Board: Dell Latitude C540/C640 Service Manual 1 M2.5 x. 5-mm screw (1)2 audio connector locations; pull outward here11. Remove the speaker ass

System Board: Dell Latitude C540/C640 Service Manual2. Install the replacement system board: a. Insert the external microphone and headphone connect

Battery and Module Bay Latches: Dell Latitude C540/C640 Service ManualBack to Contents Page Battery and Module Bay Latches Dell™ Latitude™ C540/C640 S

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 la

Battery and Module Bay Latches: Dell Latitude C540/C640 Service Manualwith the two bumps is facing the back of the case, and that the side with the we

Before You Begin: Dell Latitude C540/C640 Service ManualModem to System Board:(2 each) Keyboard toBottom Case:(5 each) Hinges to Bottom Case:(5 each)

Pin Assignments for I/O Connectors: Dell Latitude C540/C640 Service ManualBack to Contents Page Pin Assignments for I/O Connectors Dell™ Latitude™ C54

Pin Assignments for I/O Connectors: Dell Latitude C540/C640 Service Manual Pin Signal Pin Signal1 DCD 6 DSR2 RXDA 7 RTS3 TXDA 8 CTS4 DTR 9 RI5 GND

Pin Assignments for I/O Connectors: Dell Latitude C540/C640 Service Manual1 STRB#/5V 11 BUSY/MTR#2 PD0/INDEX# 12 PE/WDATA#3 PD1/TRK0# 13 SLCT/WGATE#4

Pin Assignments for I/O Connectors: Dell Latitude C540/C640 Service Manual6 GND 14 VSYNC7 GND 15 CLK_DDC28 GND PS/2 Connector Pin Signal1 DAT_KBD2

Pin Assignments for I/O Connectors: Dell Latitude C540/C640 Service Manual S-VideoPin Signal1 GND2 GND3 DLUMA-L4 DCRMA-LComposite VideoPin Signal5 NC6

Pin Assignments for I/O Connectors: Dell Latitude C540/C640 Service Manual Pin Signal Pin Signal1 STRB#/5V 101 VGA_GRN2 PD0 102 GND3 PD1 103 VGA_RED4

Pin Assignments for I/O Connectors: Dell Latitude C540/C640 Service Manual18 QPCIEN# 118 SPERR#19 S1.6M_EN# 119 SLOCK#20 DFDD/LPT# 120 SSTOP#21 GND 12

Pin Assignments for I/O Connectors: Dell Latitude C540/C640 Service Manual45 DOCK_+DC_IN 145 SRDATA#46 DOCK_+DC_IN 146 SINDEX#47 DOCK_+DC_IN 147 GND48

Pin Assignments for I/O Connectors: Dell Latitude C540/C640 Service Manual72 GND 172 SAD1573 INIT# 173 SAD1674 SLCT_IN# 174 SC/BE1#75 BUSY 175 CD/BE2#

Pin Assignments for I/O Connectors: Dell Latitude C540/C640 Service Manual99 NC 199 NC100 NC 200 GNDBack to Contents Page file:///F|/Service%20Manuals

Before You Begin: Dell Latitude C540/C640 Service ManualDisplay Latch:(2 each) (2 each) Palm Rest toBottom Case:(3 each) (5 each) Hybrid Cooling Fan:(

System Components: Dell Latitude C540/C640 Service ManualBack to Contents Page System Components Dell™ Latitude™ C540/C640 Service ManualNOTICE: Only