Sharp LC-13B2UA, Service Manual

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15
LC-13B2UA
6. Test patterns in adjustment process mode
(1) IC801 (Video decoder) test pattern
1-1) Indication of the test pattern
Set the screen to AV1, AV2, or component, and do not input a signal.
It enters the adjustment process mode. By selecting “TEST PATTERN” on the third line of page 7 and changing
the setting value to one of 1 - 6, the test pattern will be displayed.
1-2) Description of test pattern
• In Setting 1
The color bar as shown to the left will appear.
• In Setting 2
A striped pattern with narrower bars than in Setting 1 will appear.
• In Setting 3
Green pattern as shown to the left will appear.
• In Setting 4
Green pattern of slightly dark tone will appear.
• In Setting 5
Green pattern of middle tone will appear.
• In Setting 6
Green pattern of slightly bright tone will appear.
(2) Test pattern of IC1201 (LCD controller)
2-1) How to display the test pattern
Set the screen to AV1, AV2, or component, and do not input a signal.
It enters the adjustment process mode. By selecting “G/A TEST PATTERN” on the 13th line of page 16 and
changing the setting value to ON, the test pattern will be displayed.
2-2) Description of the test pattern
The test pattern as shown to the below will appear.
Note: If both test pattern displays of IC801 and IC1201 are set to ON, that of IC1201 will prevail.
Magenta Magenta Cyan
Yellow Green Blue
Red
Green Cyan Yellow Green
(Bright)
(Bright)
(Bright)
(Bright)
(Dark)
(Dark)
(Dark)
(Dark)
(Dark)
(Dark)
(Dark)
(Dark)
Grey scale
Red
Green
Blue
White
(63 grey level)
Grey
(48 grey level)
Grey
(32 grey level)
Grey
(16 grey level)
White
(0 grey level)
White
Green
Bright Bright Dark