Toshiba T2150 series Maintenance Manual page 68

Subtest 10 LED/DAC Pallet
This subtest checks the LED indicator (Caps Lock, Overlay, and Num Lock)
by key operation.
[ Caps/Num/Overlay LED test ]
(1) Press [ Caps Lock
(2) Press [ Fn + Num Lock] key !...Num
(3) Press [ Fn
PRESS [Enter] KEY
Press Enter to display the following two messages:
After pressing Enter, it writes the '2A' and '15' data to 6 bit of 256x3 (RGB),
then reads new data and compares the result with original data.
[ DAC pallet W-R-CMP test ] =
[ Processor latch test
Processor latch test (1:256 times, 2:endless) ?
To exit, press Ctrl + Break. Then press Enter.
Subtest 11 TFT color display (T2150CDT only)
This subtest sets the video mode to '13,' and displays color code (0 to 63) at
the same time, then displays seven screens. The first shows many colors at
once, the next three display 64 shades of red, green, and blue successively and
the last three display 64 shades of red, green, and blue. Also, it sets the video
mode '5F,' and displays 256 colors.
Press Enter to change the display. Press Ctrl + Break to exit.
3-20
] key !...Caps
] key !...Overlay (on/off)
(about 1 seconds)
] =
(on/off)
(on/off)
T2150 Series