Toshiba T2150 series Maintenance Manual page 62

Subtest 04 Pointing Stick
This subtest checks the functions of the pointing stick as shown below.
a) IPS stick pressure sensing direction and parameter.
b) IPS switch function check.
This test reports the pointing stick motion response from the IPS and IPS
switch by displaying the location parameters. When the stick is pressed to-
wards the upper left, the <POINTING> display changes to the following
image. If an IPS switch is pressed, the <BUTTON> display alternates black
and white and appears on the right side of the display. If two IPS switches are
pressed, it returns to the subtest menu.
***** IPS TEST PROGRAM (V1.00) *****
<< PRESS BUTTON1 + BUTTON2 THEN END >>
When the button is pressed, it alternates as shown below.
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T2150 Series