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Troubleshooting
Symptoms related to the keyboard or mouse
Symptom
$ All or some of the keys on the
keyboard fail to function.
$ Desired letters or numbers cannot
be input from the keyboard.
$ The
mouse
fails
properly.
$ The movements of the mouse
cursor are awkward.
$ The
mouse
cursor
disappear or its display position
suddenly changes on its own.
O Are you using the keyboard provided with the product?
Problems may occur in operation if a keyboard other than the one
provided with the product is used.
O Has the keyboard been connected?
O Is the keyboard connected to the mouse connector and is the mouse
connected to the keyboard connector?
Provided that both the mouse and the keyboard used are the ones
provided with the product, connecting them erroneously will not
damage the main unit but input operations will not be acknowledged
even if the connections are rectified while the power is still being
supplied. In this case, the power must be turned off, the devices
must be connected properly and then the system must be re-booted.
O Does the lighting of the [NumLock], [CapLock] and [ScrollLock] LEDs
reflect the desired status in each case?
The status of each of these LEDs is reversed every time the
corresponding key is pressed. If you have not noticed that a key has
been pressed in error, what you input may not be as originally
desired. Take [NumLock] for instance: the 10 number keys cannot
be used unless this LED is lighted.
to
operate
O Are you using the mouse provided with the product?
Problems may occur in operation if a mouse other than the one
provided with the product is used.
O Has the mouse been connected.
O Is the keyboard connected to the mouse connector and is the mouse
connected to the keyboard connector?
For the suggested remedial action, refer to the above symptom (All
or some of the keys on the keyboard fail to function).
O Are you using the mouse provided with the product?
Problems may occur in operation if a mouse other than the one
provided with the product is used.
O Is the mouse roller or mouse pad dirty?
tends
to
O Are you using the mouse provided with the product?
A mouse other than the one provided with the product may be more
susceptible to the effects of static or other types of noise.
Noise entering from the mouse or mouse connecting cable has the
effect of simulating mouse input and causing malfunctioning.
Suggested remedial action
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