Test 28 - Function: Whole Lcd On Check; Test 29 - Function: Whole Lcd Off Check - Yamaha TYROS4 Service Manual

０２７：Ｏｔｈｅｒ ＬＥＤ Ｏｎ Ｃｈｅｃｋ
−−
Supplement:
The LEDs will go off after exiting the test item.
Test 28
Function: Whole LCD ON check
Description:
Lights up all the dots on the LCD.
Displayed Message:
０２８：Ａｌｌ ＬＣＤ Ｏｎ Ｃｈｅｃｋ
Test 29
Function: Whole LCD OFF check
Description:
Turns off all the dots on the LCD. (The whole screen will be
white)
Displayed Message:
０２９：Ａｌｌ ＬＣＤ Ｏｆｆ Ｃｈｅｃｋ
During checking
Selected screen
Test 30
Function: LCD pattern check
Description:
Displays color patterns for checking LCD picture quality.
Switch the patterns RGB " rainbow " fl icker noise check
with the TAB [ ]/[#] keys.
Displayed Message:
０３０：ＬＣＤ Ｐａｔｔｅｒｎ Ｃｈｅｃｋ
During checking
Tyros4
Selected screen
During checking
Selected screen
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