dell latitude c400 User Manual

System Board : Dell Latitude C400 Service Manual 
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System Board 
Dell™ Latitude™ C400 Service Manual 
  Removing the System Board
  Replacing the System Board
Removing the System Board
The system boards BIOS chip contains the service tag sequence, which is\
 also visible on a 
barcode label on the bottom of the computer. The replacement kit for the\
 system board 
may include a CD that provides a utility for transferring the service ta\
g sequence to the 
replacement system board....

System Board : Dell Latitude C400 Service Manual 
System Board Removal 
 
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 conn\
ectors. 
11.  Use a flat-blade screwdriver to remove the two 7-mm hex nuts near each e\
nd of the  docking connector....

System Board : Dell Latitude C400 Service Manual 
12.  Remove the two guide pins from the IDE connector. 
13.  Disconnect the cooling fan from the fan extender cable. 
14.  Disconnect the fan extender cable from the connector beside the internal\
 memory socket. 
15.  Disconnect the reserve battery cable from the system board. 
16.  Remove the M2 x 4-mm screw that secures the right front corner of the sy\
stem  board. 
17.  Disengage the system board from the back panel. 
Replacing the System Board
While...

Battery Latch : Dell Latitude C400 Service Manual 
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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 yourself by using a wrist grounding strap or by 
touching an unpainted metal surface on the computer. 
NOTICE: Read Preparing to Work Inside the...

Battery Latch : Dell Latitude C400 Service Manual 
Battery Latch Removal 
 
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 squee\
ze the  two release-button tabs together and push the tabs down through the hole\
, 
catching the release button on the outside of the bottom case. 
12.  To remove the...

Battery Latch : Dell Latitude C400 Service Manual 
Replacing the Battery Latch
1.  With the inside of the bottom case facing up, place the battery latch in\
 position. 
2.  Turn the bottom case over and align the slot in the battery latch with t\
he release-button slot in the bottom case. 
3.  Holding the battery latch in place, press the release-button tabs throug\
h the  underside of the bottom case and into the battery latch until the tabs s\
nap into 
place. 
4.  Replace the tension spring. 
Back to...

Pin Assignments for I/O Connectors: Dell Latitude C400 Service Manual
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Pin Assignments for I/O Connectors 
Dell™ Latitude™ C400 Service Manual
Serial ConnectorUSB Connector
Docking ConnectorIDE 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 
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Pin Assignments for I/O Connectors: Dell Latitude C400 Service Manual
Docking Connector 
PinSignal
1 STRB#/5V
2 PD0
3  PD1 
4  PD2 
5  PD3 
6  PD4 
7  PD5 
8  PD6 
9  PD7 
10  GND 
11  DOCK_SPKR 
12  DOCK_MIC 
13  DOCK_LINE 
14  DOCK_CDROM 
15  GND 
16  NC 
17  POWER_SW# 
18  QPCIEN# 
19  S1.6M_EN# Pin Signal
51  HSYNC 
52  VSYNC 
53  GND 
54  DOCKED 
55  USB_VD1+ 
56  USB_VD1- 
57  GND 
58  USB_VD2+ 
59  USB_VD2- 
60  DOCKOC1# 
61  RUN_ON# 
62  GND 
63  NC 
64  DOCK_SCLK 
65  DOCK_LRCK 
66  DOCK_MCLK...

Pin Assignments for I/O Connectors: Dell Latitude C400 Service Manual
20 DFDD/LPT# 
21  GND 
22  NC 
23  NC 
24  D_ACTLED 
25  D_PWRLED 
26  DOCK_PWR_SRC 
27  DOCK_PWR_SRC 
28  DOCK_PWR_SRC 
29  GND 
30  +5VDOCK 
31  +5VDOCK 
32  +5VDOCK 
33  +5VDOCK 
34  +5VDOCK 
35  GND 
36  DOCK_PWR_SRC 
37  DOCK_PWR_SRC 
38  DOCK_PWR_SRC 
39  DOCK_PWR_SRC 
40  GND 
41  DOCK_+DC_IN 
42  DOCK_+DC_IN 
43  DOCK_+DC_IN 
44  DOCK_+DC_IN 
45  DOCK_+DC_IN 
46  DOCK_+DC_IN 
47  DOCK_+DC_IN 
48  DOCK_+DC_IN 72  GND 
73  INIT#...

Pin Assignments for I/O Connectors: Dell Latitude C400 Service Manual
49 GND 
50 LOW_PWR
 
Video Connector 
PinSignal
1 RED
2 GREEN
3  BLUE 
4  NC 
5  GND 
6  GND 
7  GND 
8  GND  Pin
Signal
9  CRT_VCC 
10  GND 
11  NC 
12  DAT_DDC2 
13  HSYNC 
14  VSYNC 
15  CLK_DDC2 
USB Connector 
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