Ch6 Check; Liquid Crystal Display Diagnostics; Liquid Crystal Display Check - Sharp UP-3300 Service Manual

7) CH6 Check

Check content
The check procedure, the display, and the terminating procedure
are the same as CH1 Check.

3-7. Liquid Crystal Display Diagnostics

The UP-3300 LCD display is checked.
The test program displays the patterns in the following sequence.
Every time when the Touch panel is pressed, the next pattern is
displayed. When the Touch panel is pressed at the final pattern the
display returns to the menu screen.

1) Liquid Crystal Display Check

Check content
The test patterns are displayed in the following sequence. When
the Touch panel is pressed, the next pattern is displayed.
i. Black and white pattern at 1 dot pitch
ii. Reversed pattern of the above (i)
iii. Vertical stripe pattern at 1 dot pitch
iv. Reversed pattern of the above (iii)
v. Horizontal stripe pattern at 1 dot pitch
vi. Reversed pattern of the above (v)
vii. Sixteen patterns of gradation ranging from black to white are
displayed from left to right of the screen.
viii. 16-color bars are displayed.
from left: black, blue, green, cyan, red, magenta, brown,
white, gray, light blue, light green, light cyan, light red, light
magenta, light yellow, and light white
ix. The outermost peripheral of the LCD's active area is displayed
in one-dot line.
x. "H" pattern. "H" is displayed in 80 digits and 25 lines. The 15th
line only has 39 digits of "H."
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
!
Terminating procedure
Press the Touch panel at the final pattern, or press the CANCEL
key to terminate the check.
6 – 6
White rester test