dell latitude x300 User Manual

							Battery Latches: Dell Latitude X300 Service Manual 
5spring  
6 battery-latch release button  
Replacing the Battery Latches
1.  Snap in the new latch button from behind the bottom case, making certain\
 that 
the snap tabs are fully engaged in the latch. 
NOTE: The battery latch release has springs and should be installed on the 
bottom case. 
2.  Ensure that the newly installed latch moves smoothly and freely when pus\
hed  and released. 
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							System Board: Dell Latitude X300 Service Manual 
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System Board 
Dell™ Latitude™ X300 Service Manual 
  Removing the System Board
  Replacing the System Board
Removing the System Board
 CAUTION: Before you begin any of the procedures in this section, follow 
the safety instructions in the System Information Guide.
NOTICE: Disconnect the computer and any attached devices from electrical 
outlets. 
NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by 
touching an unpainted metal surface on the computer. 
NOTICE: Read Before You Begin before performing the following procedure. 
1.  Remove the 
battery. 
2.  Remove the 
keyboard. 
3.  Remove the 
palm rest. 
4.  Remove the 
hinge covers. 
5.  Remove the 
display assembly. 
6.  Remove the 
keyboard tray. 
7.  Remove the 
hard drive. 
8.  Remove the 
memory module. 
9.  Remove the 
Mini PCI card, if present. 
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							System Board: Dell Latitude X300 Service Manual 
10.  Remove the modem card, if present. 
11.  Remove the three M2 x 4-mm screws that secure the system board to the  bottom case. 
NOTE: Each system board screw has an arrow beside it. 
 
1 system board
see Mini RSL
2 M2 x 4-mm screws (3) 98MKC
3 status light (LED) cable  
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							System Board: Dell Latitude X300 Service Manual 
4ZIF connector  
12.  Disconnect the 
left and right speakers from their system board connectors. 
13.  Disconnect the 
reserve battery connector from the system board connector. 
14.  Disconnect the 
Bluetooth cable from the system board, if a Bluetooth™ device is 
present. 
15.  Lift the ZIF connector, and remove the status light (LED) cable from i\
ts ZIF  connector on the system board. 
16.  Lift the system board up, from the right side, and out of the bottom cas\
e. 
Replacing the System Board
1.  Place the system board in the bottom case. 
NOTE: Route cables so that they will not be crimped or pinched when the 
complete assembly is put back together. 
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							System Board: Dell Latitude X300 Service Manual 
 
1 wireless antenna
2.  Reconnect all the cables to the system board ZIF connectors. 
3.  Reinstall the three M2 x 4-mm screws that secure the system board to the\
  bottom case. 
NOTE: After replacing the system board, enter the computer Service Tag into 
the BIOS of the replacement system board. 
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							Flashing the BIOS: Dell Latitude X300 Service Manual 
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Flashing the BIOS 
Dell™ Latitude™ X300 Service Manual 
To update the basic input/output system (BIOS):1.  Go to support.dell.com. If this is your first time to use the website, complete  the
one-time registration. 
2.  Enter the Service Tag for your computer or select the appropriate Dell™\
  computer. 
Click Go.
3.  Click Downloads. 
4.  Select the appropriate operating system and language for your computer. \
5.  Select the FlashBIOS Updates download category. 
Click Go.
6.  Click the BIOS link and follow the instructions to download the BIOS to \
your  computer. 
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							Pin Assignments for I/O Connectors: Dell Latitude X300 Service Manual 
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Pin Assignments for I/O Connectors 
Dell™ Latitude™ X300 Service Manual 
  Pin Assignments for the Computer
  Pin Assignments for the Media Base
Pin Assignments for the Computer
USB Connector 2.0 
 
Pin Signal
1 VCC
2 Data-
3 Data+
4 GND
Video Connector 
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							Pin Assignments for I/O Connectors: Dell Latitude X300 Service Manual 
 
Pin Signal PinSignal
1 RED 9CRT_VCC
2 GREEN 10GND
3 BLUE 11NC
4 NC 12DAT_DDC2
5 GND 13HSYNC
6 GND 14VSYNC
7 GND 15CLK_DDC2
8 GND   
IEEE 1394 Connector 
 
1 TPB-
2 TPB+
3 TPA-
4 TPA+
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							Pin Assignments for I/O Connectors: Dell Latitude X300 Service Manual 
Dell D/Bay Connector 
 
Pin Signal PinSignal
1 USB_VCC 6SMB_DAT
2 USB_D- 7MODPRES#
3 USB_D+ 8SMB_CLK
4 USB_GND 9GND
5 PWR_SRC   
Pin Assignments for the Media Base
Docking Connector 
 
Pin Signal PinSignal
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							Pin Assignments for I/O Connectors: Dell Latitude X300 Service Manual 
1DCK3_DOCK_IN2* 2USB3_P2+
3 SYS_DCIN* 4USB3_P2-
5 VDC 6GND
7 VDC 8VGA3_RED
9 VDC 10VGA3_GREEN
11 KBC3_ADID_CLK 12VGA3_BLUE
13 GND 14VGA5_DDCD
15 PIO3_SLCT 16VGA5_DDCC
17 PIO3_AUTOFD* 18VGA5_HSYNC
19 PIO3_ERROR* 20VGA5_VSYNC
21 PIO3_INIT* 22GND
23 PIO3_SLCTIN* 24KBC3_EJECT*
25 GND 26DCK3_RST*
27 PIO3_PD0 28BATTB_PRES*
29 PIO3_PD1 30BAT3_VOLTB
31 PIO3_PD2 32KBC3_CHGENB
33 PIO3_PD3 34KBC3_DCHGENB
35 PIO3_PD4 36DCHGOUTB
37 PIO3_PD5 38DBAT3_SMDATA
39 PIO3_PD6 40DBAT3_SMCLK
41 PIO3_PD7 42KBC3_DCKPWRON
43 PIO3_STROBE* 44GND
45 PIO3_ACT* 46PS25_KCLK
47 PIO3_BUSY 48PS25_KDATA
49 PIO3_PE 50PS25_MCLK
51 GND 52PS25_MDATA
53 SIO3_DTR1* 54P2.5V_LAN
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