Sharp LC-20S2U-S Service Manual page 16

LC-20S2U-S
3. Test patterns in adjustment process mode
(1) IC801 (Video decoder) test patterns
1) Getting the test patterns displayed
Put the screen in AV1, AV2 or COMPONENT but keep out any signal. Call the adjustment process mode, select
"TEST PAT MODE" in the 1st line of XVC 1, make the settings 1 thru 12, and the following test patterns show up.
2) Test patterns
Pattern Mode
Color Bar
Ramp
Rester
(2) IC1201 (LCD controller) test pattern
1) Getting the test pattern displayed
Put the screen in AV1, AV2 or COMPONENT but keep out any signal. Call the adjustment process mode, select
"DPS TESTP" in the 3rd line of DPS 1, turn on the setting, and the following test pattern shows up.
2) Test pattern
The following test pattern appears.
Dark
Dark
Dark
Dark
Black
Gradation
Note: When the IC801 and IC1201 test pattern display commands are both turned on at the same time, the IC1201
test pattern is given priority.
Pattern Option
100% Color bar
75% Color bar
Ramp
Mod Ramp
White
Yellow
Cyan
Green
Magenta
Red
Blue
Black
Gray scale Bright
Red Bright
Bright
Green
Blue Bright
Gray White
TEST PAT PIC
0
1
0
1
0
1
2
3
4
5
6
7
Dark
Dark
Dark
Dark
16
TEST PAT MODE
1
1
2
2
3
3
3
3
3
3
3
3