Page 2 - Before You Begin; Preparing to Work Inside the Computer
Back to Contents Page Before You Begin Dell™ Latitude™ C400 Service Manual Preparing to Work Inside the Computer Recommended Tools Screw Identification Preparing to Work Inside the Computer NOTICE: Only a certified service technician should perform repairs on your computer. Damage due to servicing t...
Page 6 - System Components
Back to Contents Page System Components Dell™ Latitude™ C400 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 t...
Page 8 - Keyboard; Removing the Keyboard
Back to Contents Page Keyboard Dell™ Latitude™ C400 Service Manual Removing the Keyboard Replacing the Keyboard 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...
Page 10 - Replacing the Keyboard
1 keyboard flex cable 6. Use the pull tab to pull the keyboard flex cable up from its connector on the system board. The keyboard is now disconnected from the bottom case. Replacing the Keyboard 1. Replace the hard drive . 2. Place the keyboard face-down on the palm rest, with the keyboard flex cabl...
Page 12 - Memory Module and Modem Daughter Card; Removing the Memory Module/Modem Cover
Back to Contents Page Memory Module and Modem Daughter Card Dell™ Latitude™ C400 Service Manual Removing the Memory Module/Modem Cover Removing the Memory Modules Replacing the Memory Modules Removing the Modem Daughter Card Replacing the Modem Daughter Card Removing the Memory Module/Modem Cover NO...
Page 13 - Removing the Memory Modules; Replacing the Memory Modules
Removing the Memory Modules NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove the battery. 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...
Page 14 - Removing the Modem Daughter Card
NOTICE: The memory module must be inserted at a 45 -degree angle to avoid damaging the connector. 1. Align the notch in the memory module with the slot in the center of the socket. 2. Slide the edge connector of the module firmly into the socket at a 45 - degree angle, and rotate the module down unt...
Page 15 - Replacing the Modem Daughter Card
2 pull tab 3 boss 4 modem connector 5 modem cable Replacing the Modem Daughter Card 1. Connect the modem cable to the modem daughter card. NOTICE: The connectors are keyed for correct insertion; do not force the connections. 2. Using the screw hole and the boss at the opposite corner of the daughter...
Page 16 - Hard Drive; Removing the Hard Drive
Back to Contents Page Hard Drive Dell™ Latitude™ C400 Service Manual Removing the Hard Drive Replacing the Hard Drive Removing the Hard Drive 1. Save and close any open files, exit any open programs, and shut down the computer. NOTICE: Disconnect the computer and any attached devices from electrical...
Page 17 - Replacing the Hard Drive
4. Slide the hard drive straight 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 the connector. 1. Push the hard drive into the drive bay until it is full...
Page 18 - Removing the Wireless Network Adapter; Replacing the Wireless Network Adapter
Back to Contents Page Wireless Network Adapter Dell™ Latitude™ C400 Service Manual Removing the Wireless Network Adapter Replacing the Wireless Network Adapter Removing the Wireless Network Adapter NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any insta...
Page 20 - Display Assembly and Display Latch; Removing the Display Assembly
Back to Contents Page Display Assembly and Display Latch Dell™ Latitude™ C400 Service Manual Removing the Display Assembly Replacing the Display Latch Removing the Display Assembly NOTICE: You must remove the display assembly before you remove the palm rest. NOTICE: Disconnect the computer and any a...
Page 21 - Replacing the Display Latch
Display Assembly 1 display -feed flex cable 2 M2.5 x 12 -mm screws (2) 3 display -feed flex cable hold-down board 4 pull tab 7. Remove the two M2.5 x 12 -mm screws from the display -feed flex cable hold-down board. 8. Use the pull tab to disconnect the display -feed flex cable from its connector on ...
Page 23 - Palm Rest; Removing the Palm Rest
Back to Contents Page Palm Rest Dell™ Latitude™ C400 Service Manual Removing the Palm Rest Replacing the Palm Rest 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 usi...
Page 25 - Replacing the Palm Rest
1 M2.5 x 6-mm screws (6) 2 LED cable 3 palm-rest flex cable 9. Remove the six M2.5 x 6-mm screws that secure the palm rest to the system board. 10 . Disconnect the LED and palm-rest flex cables. 11 . If a Mini PCI wireless card is installed, disconnect the two wireless cables from the card. 12 . Lif...
Page 26 - Cooling Fan; Removing the Cooling Fan
Back to Contents Page Cooling Fan Dell™ Latitude™ C400 Service Manual Removing the Cooling Fan Removing the Cooling Fan 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 groundi...
Page 28 - Reserve Battery; Removing the Reserve Battery
Back to Contents Page Reserve Battery Dell™ Latitude™ C400 Service Manual Removing the Reserve Battery Replacing the Reserve Battery 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 th...
Page 29 - Replacing the Reserve Battery
1 reserve battery connector on system board 2 reserve battery cable 3 reserve battery 5. Disconnect the reserve battery cable from the system board connector. 6. Pry the reserve battery free from the system board. The reserve battery is attached to the system board with a piece of adhesive tape. 7. ...
Page 31 - Audio Board; Removing the Audio Board
Back to Contents Page Audio Board Dell™ Latitude™ C400 Service Manual Removing the Audio Board Replacing the Audio Board Removing the Audio Board NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries. NOTICE: To avoid ESD, ground yoursel...
Page 32 - Replacing the Audio Board
1 M2 x 4-mm screws (2) 2 audio board shield 3 audio board 5. Remove the two M2 x 4-mm screws from the audio board shield, and remove the shield. 6. Pull the audio board up out of its connector. Replacing the Audio Board The audio board can be easily misaligned. When replacing it, first align the two...
Page 33 - System Board; Removing the System Board
Back to Contents Page System Board Dell™ Latitude™ C400 Service Manual Removing the System Board Replacing the System Board Removing the System Board The system board's BIOS chip contains the service tag sequence, which is also visible on a barcode label on the bottom of the computer. The replacemen...
Page 34 - Replacing the System Board
1 fan 2 reserve battery cable 3 connector for fan extender cable 4 hard-drive connector 5 M2 x 4-mm screw (1) 6 memory module socket 7 guide pins (2) 8 5-mm hex nuts (4) 9 7-mm hex nuts (2) 10 . Remove the four 5-mm hex nuts near each end of the serial and video connectors. 11 . Use a flat-blade scr...
Page 36 - Battery Latch; Removing the Battery Latch
Back to Contents Page Battery Latch Dell™ Latitude™ C400 Service Manual Removing the Battery Latch Replacing the Battery Latch Removing the Battery Latch NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries. NOTICE: To avoid ESD, ground...
Page 37 - Replacing the Battery Latch
1 tension spring 2 bottom case 3 battery latch 4 battery release-button tabs NOTICE: The tabs on the release button are plastic. When squeezing the tabs, be careful not to break them. 11 . On the inside of the bottom case, use needle-nose pliers to gently squeeze the two release-button tabs together...
Page 38 - Pin Assignments for I/O Connectors
Back to Contents Page Pin Assignments for I/O Connectors Dell™ Latitude™ C400 Service Manual Serial Connector USB Connector Docking Connector IDE Module Bay Connector Video Connector Serial Connector Pin Signal 1 DCD 2 RXDA 3 TXDA 4 DTR 5 GND 6 DSR 7 RTS 8 CTS 9 RI Docking Connector Pin Signal 1 STR...