Dell PowerEdge 2300 Installation and Troubleshooting Guide - Page 66

External Key Pad Test

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Keyboard Interactive Test Checks the internal microcode of the keyboard and the external interface of the keyboard controller chip for a malfunctioning key Stuck Key Test Checks the internal microcode of the keyboard and the external interface of the keyboard controller chip for a repeating-key signal External Key Pad Test Checks the contact beneath each key for an electrical impulse to ensure that each key is working properly Keyboard problems are not always caused by the keyboard. For example, if the computer system locks up, rendering the keyboard inoperable, the problem is most likely not caused by the keyboard. There are three symptoms that are likely to be keyboardrelated. Sometimes, the configuration of a program changes the function of a key or key combination. Likewise, key configuration programs can change a key's function. Because these programs are memory resident, you should be sure to clear them out of the computer's memory before running a subtest in the Keyboard Test Group. (Clear them from memory by rebooting the computer from the diagnostics diskette.) When these possibilities have been eliminated, and if the following symptoms occur, you should run one or more of the subtests in the Keyboard Test Group: When you press a key, the character represented by that key appears repeatedly; the key seems to be stuck. Run the Stuck Key Test. When you press a key and the response is different from the usual response or the response you anticipated, the key contact may be damaged. Run the Keyboard Interactive Test. When a key does not work at all, run all of the subtests in the Keyboard Test Group. The Mouse Test checks the functionality of the mouse controller (which coordinates cursor movement on the screen with corresponding movement of the mouse or touch pad) and the operation of the mouse keys/touch pad. There are no subtests for the Mouse Test Group. 5-18 Dell PowerEdge 2300 Systems Installation and Troubleshooting Guide

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5-18
Dell PowerEdge 2300 Systems Installation and Troubleshooting Guide
²
Keyboard Interactive Test
Checks the internal microcode of the keyboard and the external interface of the
keyboard controller chip for a malfunctioning key
²
Stuck Key Test
Checks the internal microcode of the keyboard and the external interface of the
keyboard controller chip for a repeating-key signal
²
External Key Pad Test
Checks the contact beneath each key for an electrical impulse to ensure that each
key is working properly
:K\±5XQ±D±.H\ERDUG±7HVW"
Keyboard problems are not always caused by the keyboard. For example, if the com-
puter system locks up, rendering the keyboard inoperable, the problem is most likely
not caused by the keyboard. There are three symptoms that are likely to be keyboard-
related. Sometimes, the configuration of a program changes the function of a key or
key combination. Likewise, key configuration programs can change a key’s function.
Because these programs are memory resident, you should be sure to clear them out
of the computer’s memory before running a subtest in the Keyboard Test Group.
(Clear them from memory by rebooting the computer from the diagnostics diskette.)
When these possibilities have been eliminated, and if the following symptoms occur,
you should run one or more of the subtests in the Keyboard Test Group:
²
When you press a key, the character represented by that key appears repeatedly;
the key seems to be stuck. Run the Stuck Key Test.
²
When you press a key and the response is different from the usual response or
the response you anticipated, the key contact may be damaged. Run the Key-
board Interactive Test.
²
When a key does not work at all, run all of the subtests in the Keyboard Test
Group.
0RXVH±7HVW
The Mouse Test checks the functionality of the mouse controller (which coordinates
cursor movement on the screen with corresponding movement of the mouse or
touch pad) and the operation of the mouse keys/touch pad.
6XEWHVWV
There are no subtests for the Mouse Test Group.