Sharp LC-15B2UA Service Manual page 17

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
• In Setting 2
A striped pattern with narrower bars than in Setting 1 will appear.
• In Setting 3
Green
Bright
• 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.
(Dark) Grey scale
(Dark)
(Dark)
(Dark)
White Grey
(0 grey level) (16 grey level)
White
Note: If both test pattern displays of IC801 and IC1201 are set to ON, that of IC1201 will prevail.
Dark Bright
(Bright) (Dark)
Red (Bright) (Dark)
Green (Bright) (Dark)
Blue (Bright) (Dark)
Grey Grey White
(32 grey level) (48 grey level) (63 grey level)
The color bar as shown to the left will appear.
Green pattern as shown to the left will appear.
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LC-15B2UA
LC-15B2UB