Gateway E4200 Manual

							20          Maintaining and Troubleshooting Your E-4200 System
Front panel I/O connections
The front panel I/O connector block lets you connect devices such as 
speakers and power management accessories. Although these connections 
are not covered in this guide, the illustration is provided for your reference. 
						

							System Components     21
Setting the jumpers
The system board jumper (J7B1) lets you clear passwords, set the 
processor/bus speed, and recover the BIOS. The table below shows the 
settings required to perform those tasks, and the following text provides 
step-by-step instructions for each mode.
The following f igure shows the location of the jumper on the system board.
J7B1 ModeJumper SettingAction When Set
Normal 1-2 Normal operation
Configure 2-3 Adds a Maintenance 
menu to Setup utility with 
options to clear 
passwords and set 
processor/bus speeds
Recovery No jumper Causes system to 
attempt BIOS update or 
recovery from diskette
 Important!
Some processors are 
designed so that your 
system can automatically 
detect the processor speed. 
For other processors, you 
must manually enable the 
system to detect the 
processor speed. See 
page 27 for more 
information.
1 3
J7B1 
						

							22          Maintaining and Troubleshooting Your E-4200 System
Recovery mode
The J7B1 jumper lets you recover the BIOS if it has become corrupted. 
1.Log onto the internet.
2.Download the correct BIOS f ile from the Technical Support web site.
3.Extract the contents of the BIOS f ile you downloaded, and copy the 
contents onto a bootable diskette.
4.Turn off the system and disconnect the power cord.
5.Open the case, observing the “Static electricity precautions” on 
page 2.
6.Remove the pin on the J7B1 jumper and store it in a safe place. You 
will replace the jumper on pins 1-2 in Step 12.
7.Close the case, as described in Chapter 1.
8.Place the bootable diskette containing the BIOS f iles into drive A.
9.Reconnect the power cord and turn on the system to recover the BIOS. 
When you hear two beeps, the BIOS has been successfully recovered.
10.Turn off the system again, eject the diskette from drive A, and 
disconnect the power cord.
11.Open the case, observing the “Static electricity precautions” on 
page 2.
12.Place the jumper back on pins 1-2 on the J7B1 jumper.
13.Close the case, as described in Chapter 1, reconnect the power cord, 
and turn on the system.
To recover the BIOS 
						

							System Components     23
Replacing the processor
The system is compatible with the Intel® Pentium® II 66 and 100 MHz 
front-side bus (FSB) processors.
The system board will support the following processor/bus conf igurations:
•266/66
•300/66
•333/66
•350/100
•400/100
•450/100
It is critical that a heat sink be installed on each Pentium processor. 
When replacing a processor, order a Pentium processor upgrade kit. The kit 
includes the Pentium processor, a heat sink, and a disposable electrostatic 
discharge (ESD) wrist strap.
Some of the steps below are specif ic to your desktop, mid-tower or tower 
computer. Please skip the step if it does not apply to your system.
1.Turn off the system and disconnect the power cord.
2.Open the case, observing the “Static electricity precautions” on 
page 2.
3.Remove the stability bar (mid-tower only). Skip to step 4 if your 
system does not have a stability bar:
To replace the processor 
						

							24          Maintaining and Troubleshooting Your E-4200 System
A.Using a Phillips screwdriver, remove the screw that attaches the 
stability bar to the chassis.
B.Lift the bar slightly and slide it towards the front of the chassis until 
the bar clears the hard drive cage. Lift the bar out of the chassis.
4.Remove the fan duct (mid-tower and tower only). Skip to step 5 if your 
system does not have a fan duct:
A.Grasp the sides of the fan duct.
Screw
Hard drive 
cage
Stability 
bar 
						

							System Components     25
B.Gently squeeze the duct until the side tabs unlatch from the power 
supply.
C.Lift the duct out of the chassis.
5.Identify your processor bracket type. The processor is attached to the 
system board with either a top bracket or a bottom bracket.
6.If your processor is attached by a top bracket:
A.Using a flat-bladed screwdriver, remove the screws from the top 
bracket. Lift off the bracket.
Fan  
duct
To p  
bracket
Bottom bracket 
						

							26          Maintaining and Troubleshooting Your E-4200 System
B.Pull the processor up and out.
C.Push the new processor into the slot until it is fully seated.
D.Place the top bracket over the processor and replace the two screws.
7.If your processor is attached by a bottom bracket:
A.Remove the DIMMs on the system board that block access to the 
bottom processor bracket. Gently push out the plastic socket clamps 
on each end of the DIMMs. Then carefully lift the DIMMs out of 
their sockets. Store the DIMMs in static-free bags.
To p  
bracket 
						

							System Components     27
B.Push in the tabs on the outside edges of the bottom bracket and pull 
the bracket away from the processor.
C.Press in the two latches at the top of the processor, and pull the 
processor up and out.
D.Push the new processor into the slot until it snaps into place.
E.Push the support bracket back into the base of the processor until it 
snaps into place.
F.Replace any DIMMs you removed.
8.Replace the stability bar and fan duct if applicable.
9.Close the case, as described in Chapter 1.
10.Plug in the power cord and turn on the computer and monitor.
11.Check to see if your system has automatically detected the processor 
speed.
A.When you see the Gateway logo on the screen, press TAB to display 
the system messages.
B.Check the processor speed displayed on the screen. If the correct 
speed is shown, your system has automatically detected the 
processor speed. 
If an incorrect speed is shown, you need to open a special menu in 
your system’s Setup program to manually set the correct processor 
speed. Setting system board jumper J7B1 opens this menu.
Bottom bracket 
						

							28          Maintaining and Troubleshooting Your E-4200 System
12.If the processor speed is not detected automatically, set the speed 
manually:
A.Turn off your system and unplug all power cords.
B.Open the system case.
C.Locate jumper J7B1, as shown in the following f igure.
D.Take the jumper shunt off pins 1 and 2 on jumper J7B1 and place 
the shunt over pins 2 and 3.
E.Close the computer case, reconnect the power cords, and turn on the 
system. As your system starts, the Setup program opens and a 
Maintenance screen appears.
F.When the Maintenance screen appears, set the processor speed. 
Save the conf iguration and exit Setup.
G.Turn off the system, disconnect the power cords, and open the case.
H.Move the jumper shunt on the J7B1 jumper back to its normal 
position over pins 1 and 2.
1 3
J7B1 
						

							System Components     29
I.Close the case, reconnect the power cord, and turn on the system. 
Your system now detects the speed of the new processor.
Installing memory 
The Synchronous Dynamic Random Access Memory (SDRAM) Dual 
In-line Memory Modules (DIMMs) supported by your system board 
conform to the following standards:
•3.3 V, 168-pin unbuffered SDRAM 
•16 MB and 32 MB (16 bit technology)
•64 MB and 128 MB (64 bit technology)
•Single- or double-sided conf igurations
•384 MB maximum system memory
When you are installing DIMMs, keep the following in mind:
•You can use 16-MB, 32-MB, 64-MB, and 128-MB DIMMs in any 
combination, band, or order to expand the SDRAM up to 384 MB.
•No jumper settings are required for the memory size or type 
because this information is automatically detected by the BIOS.
•This system board requires 4-clock DIMMs with a clock latency of 
2 (CL2), otherwise known as CL24-clock DIMMs. 
1.Turn off the system and disconnect the power cord.
2.Open the case, observing the Static Electricity precautions in 
Chapter 1.
To install DIMMs