Dell PowerEdge 4300 Dell PowerEdge 4300 Systems Installation and Troubleshooti - Page 72

Keyboard Interactive Test, Stuck Key Test, External Key Pad Test, Keyboard, board Interactive Test,

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Page 72 highlights

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. Mouse or touch pad problems are as likely to originate in RAM as they are to be caused by a faulty mouse or touch pad. Three sources of RAM-related problems 5-18 Dell PowerEdge 4300 Systems Installation and Troubleshooting Guide

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5-18
Dell PowerEdge 4300 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.
:K\±5XQ±D±0RXVH±7HVW"
Mouse or touch pad problems are as likely to originate in RAM as they are to be
caused by a faulty mouse or touch pad. Three sources of RAM-related problems