dell latitude c400 User Manual

							Dell Latitude C400 Service Manual 
Dell™ Latitude™ C400 Service Manual 
Before You Begin
System Components
Keyboard
Memory Module and Modem Daughter Card
Hard Drive
Wireless Network Adapter
Display Assembly and Display Latch
Palm Rest
Cooling Fan
Reserve Battery
Flashing the BIOS
Audio Board
System Board
Battery Latch
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: A CAUTION indicates a potential for property damage, 
personal injury, or death. 
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							Dell Latitude C400 Service Manual 
Corporation; Intel is a registered trademark of Intel Corporation; Microsoft and Windows are registered 
trademarks of Microsoft Corporation.
Other trademarks and trade names may be used in this document to refer t\
o either the entities 
claiming the marks and names or their products. Dell Computer Corporatio\
n disclaims any proprietary 
interest in trademarks and trade names other than its own.
October 2001 Rev. A00
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							Before You Begin : Dell Latitude C400 Service Manual 
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 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. 
1.  Make sure that the work surface is clean to prevent scratching the compu\
ter  cover. 
2.  Save any work in progress and close all open application programs. 
3.  Turn off the computer and all attached devices. 
NOTE: Make sure the computer is turned off and not in suspend-to-disk or 
hibernate mode. If you cannot shut down the computer using the computer\
s 
operating system, press and hold the power button for 4 seconds. 
4.  Make sure the computer is undocked. 
5.  Disconnect the computer from the electrical outlet. 
6.  To avoid possible damage to the system board, wait 10 to 20 seconds and \
then  disconnect any attached devices. 
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							Before You Begin : Dell Latitude C400 Service Manual 
7.  Disconnect all other external cables from the computer, including the ID\
E modular bay cable (if connected). 
8.  Remove any installed PC Cards or plastic blanks from the PC Card slot. 
9.  Close the display and turn the computer upside down on a flat work surfa\
ce. 
NOTICE: To avoid damaging the system board, you must remove the battery 
before you service the computer. 
10.  Remove the battery from the battery bay. 
11.  To dissipate any static electricity while you work, use a wrist groundin\
g strap or  periodically touch an unpainted metal surface. 
12.  Handle components and cards with care. Do not touch the components or  contacts on a card. Hold a card by it edges or by its metal mounting bra\
cket. 
Hold internal components by their edges, not by their pins. 
Recommended Tools
The procedures in this manual require the following tools:
l     #1 magnetized Phillips screwdriver 
l     Small flat-blade screwdriver 
l     5-mm nut driver 
l     7-mm nut driver 
l     Needle-nose pliers 
l     Flash BIOS update program floppy disk or CD 
Computer Orientation 
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							Before You Begin : Dell Latitude C400 Service Manual 
 
1 back
2 right
3 front
4 left
Screw Identification
When you are removing and replacing components, photocopy the placemat a\
s a tool 
to lay out and keep track of the screws. The placemat provides the numbe\
r of screws 
and their sizes.
Screw Identification 
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							Before You Begin : Dell Latitude C400 Service Manual 
 
NOTICE: When reinstalling a screw, you must use a screw of the correct 
diameter and length. Make sure that the screw is properly aligned with i\
ts 
corresponding hole, and avoid overtightening. 
Hard Drive Door:
(1 each)
  Modem Daughter Card:
(1 each) 
Keyboard:
(4 each)
  Display Assembly:
 
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							Before You Begin : Dell Latitude C400 Service Manual 
Display Bezel:
(6 each)
 
Rubber screw covers: 6 each Palm Rest to Bottom Case:
 
 
Critical Component Shield:
(6 each)
  Palm Rest to System Board:
(6 each)  
Cooling Fan:
(3 each)
  Audio Board:
(2 each) 
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							Before You Begin : Dell Latitude C400 Service Manual 
System Board:
(1 each) 
 
Guide pins: 2 each
5-mm hex nuts: 4 each
7-mm hex nuts: 2 each  
Back to Contents Page
 
 
 
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							System Components : Dell Latitude C400 Service Manual 
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 this manual assumes that 
a part can be replaced by performing the removal procedure in reverse or\
der. 
System Components 
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							System Components : Dell Latitude C400 Service Manual 
 
1 display 8memory module/modem cover
2 center cover 9battery
3 hard drive 10audio card
4 cooling fan 11audio card shield
5 reserve battery 12critical component shield
6 system board 13palm rest
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