DELL inspiron 4100 User Manual

							System Board: Dell Inspiron 4150 
Back to Contents Page 
System Board 
Dell™ Inspiron™ 4150 
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 fo\
r the system 
board includes a CD that provides a utility for transferring the service\
 tag sequence to 
the replacement system board.
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 Computer before performing the 
following procedure. 
1.  Remove the 
hard drive. 
2.  Remove the 
keyboard. 
3.  Remove the 
display. 
4.  Remove the 
palm rest. 
5.  Remove the 
microprocessor thermal cooling assembly. 
6.  Remove the 
microprocessor. 
7.  Remove the 
modem, memory modules, and Mini PCI card. 
8.  From the bottom of the computer, remove the six M2.5 x 5-mm screws label\
ed  circle B that secure the system board to the bottom case. 
9.  Remove the three M2.5 x 5-mm screws labeled circle B that secure the f\
an 
file:///F|/Service%20Manuals/Dell/Inspiron/4150/sysboard.htm (1 of 4) \
[2/28/2004 7:29:13 AM] 
						

							System Board: Dell Inspiron 4150 
guard to the bottom case. 
 
1 fan guard
2 M2.5 x 5-mm screws (9)
10.  Turn the computer over and remove the M2.5 x 5-mm screw, which is labele\
d  circle B with an arrow, by the battery connector on the front center o\
f the 
system board. 
file:///F|/Service%20Manuals/Dell/Inspiron/4150/sysboard.htm (2 of 4) \
[2/28/2004 7:29:13 AM] 
						

							System Board: Dell Inspiron 4150 
 
1 M2.5 x. 5-mm screw (1)
11.  Remove the 
speaker assemblies from the bottom case. 
12.  Pull the right side of the bottom case, next to the external headphone a\
nd  microphone connectors, away from the system board as you simultaneously \
lift 
the front of the system board out and away from the bottom case. 
Replacing the System Board 
1.  Install the microprocessor on the replacement system board. 
2.  Install the replacement system board:  a.  Insert the external microphone and headphone connectors through the 
file:///F|/Service%20Manuals/Dell/Inspiron/4150/sysboard.htm (3 of 4) \
[2/28/2004 7:29:13 AM] 
						

							System Board: Dell Inspiron 4150 
bottom case. 
b.  Replace the six M2.5 x 5-mm screws, starting on the right side of the  bottom case. 
c.  Replace the fan guard, inserting the tab into the bottom case, and repla\
ce  the three M2.5 x 5-mm screws. Replacing the screw opposite the tab first\
 
makes it easier to insert and replace the other two screws. 
3.  Install the modem and the microprocessor thermal cooling assembly that y\
ou  removed from the old system board. 
HINT: Route cables so that they are not crimped or pinched when the complete 
assembly is put back together. 
4.  Connect the right and left 
speaker assemblies that came with the new system 
board in the bottom case. 
5.  Replace the palm rest, the keyboard, the display, and the hard drive. 
6.  Replace the module bay devices and any PC Cards or plastic blanks in the\
 PC  Card slot. 
7.  Insert the CD that accompanied the replacement system board into the dri\
ve,  and turn on the computer. Follow the instructions on the screen. 
HINT: After installing the system board, enter the computer service tag 
sequence into the BIOS of the replacement system board. 
Back to Contents Page
 
file:///F|/Service%20Manuals/Dell/Inspiron/4150/sysboard.htm (4 of 4) \
[2/28/2004 7:29:13 AM] 
						

							Before You Remove or Replace Parts: Dell Inspiron 4150 
Back to Contents Page 
Before You Remove or Replace Parts 
Dell™ Inspiron™ 4150 
  Preparing to Work Inside the Computer
  Recommended Tools
  Screw Identification
Preparing to Work Inside the Computer
 CAUTION: 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. Read and follow applicable safety 
instructions in the Owners Manual that came with the computer.
NOTICE: To avoid damaging the computer, perform the following steps before 
you begin working inside the computer. 
1.  Ensure that the work surface is clean to prevent scratching the computer\
 cover. 
2.  Save any work in progress and exit all open programs. 
3.  Turn off the computer and all attached devices. 
HINT: Ensure that the computer is turned off and not in suspend mode or 
hibernate mode. If you cannot shut down the computer using the computer \
operating system, press and hold the power button for 4 seconds. 
4.  Ensure that 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. 
file:///F|/Service%20Manuals/Dell/Inspiron/4150/begin.htm (1 of 6) [2/\
28/2004 7:29:39 AM] 
						

							Before You Remove or Replace Parts: Dell Inspiron 4150 
7.  Disconnect all other external cables from the computer. 
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 main 
battery and secondary battery (if present) before you service the comp\
uter. 
10.  Remove the primary battery from the battery bay and the secondary batter\
y  from the module bay, if a secondary battery is in use. 
11.  Remove any device installed in the module bay. 
12.  To dissipate any static electricity while you work, use a wrist groundin\
g strap or  periodically touch an unpainted metal surface. 
13.  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 a component such as a microprocessor by its edges, not by its pins.\
 
Recommended Tools
The procedures in this manual require the following tools:
l     #1 magnetized Phillips screwdriver
l     ¼-inch flat-blade screwdriver
l     Small plastic scribe
l     Microprocessor extractor
l     Flash BIOS update program CD
file:///F|/Service%20Manuals/Dell/Inspiron/4150/begin.htm (2 of 6) [2/\
28/2004 7:29:39 AM] 
						

							Before You Remove or Replace Parts: Dell Inspiron 4150 
 
1 back
2 right
3 front
4 left
Screw Identification
When you are removing and replacing components, photocopy the place mat \
as a tool 
to lay out and keep track of the screws. The place mat provides the numb\
er of screws 
and their sizes.
file:///F|/Service%20Manuals/Dell/Inspiron/4150/begin.htm (3 of 6) [2/\
28/2004 7:29:39 AM] 
						

							Before You Remove or Replace Parts: Dell Inspiron 4150 
 
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 over tightening. 
Hard Drive Door:
(1 each)
  Keyboard to
Bottom Case:
(5 each)
 
Display Bezel:
(6 each)
 
Rubber Screw Covers (6 
each) Hinge Bracket to Bottom 
Case:
(5 each) 
file:///F|/Service%20Manuals/Dell/Inspiron/4150/begin.htm (4 of 6) [2/\
28/2004 7:29:39 AM] 
						

							Before You Remove or Replace Parts: Dell Inspiron 4150 
Display Assembly to Top 
Cover:
(5 each)
 Display-Feed Flex Cable:
(4 each)
 
Palm Rest to
Bottom Case:
(5 each) (3 each)
  Hybrid Cooling Fan:
(2 each) (1 each) 
System Board to Bottom 
Case:
(10 each)
  Modem to 
System Board:
(2 each) 
file:///F|/Service%20Manuals/Dell/Inspiron/4150/begin.htm (5 of 6) [2/\
28/2004 7:29:39 AM] 
						

							Before You Remove or Replace Parts: Dell Inspiron 4150 
Display Latch:
(2 each) (2 each)
 Memory Module Cover:
(2 captive screws)
(1 each)
The single screw is one of 
the five keyboard screws.
 
Back to Contents Page
 
file:///F|/Service%20Manuals/Dell/Inspiron/4150/begin.htm (6 of 6) [2/\
28/2004 7:29:39 AM]