Test 18 - Function: Eq (High) Frequency Check; Test 19 - Function: Sp Mute Check; Test 20 - Function: Mute Check - Yamaha TYROS4 Service Manual

Tyros4
Supplement:
Sound is stopped when the test item is quit.
Test 18
Function: EQ (High) frequency check
Description:
The sine wave of about 4,195 Hz (C7) is output from the
[LINE OUT] jacks (MAIN L/L+R, MAIN R, SUB1, SUB2).
Displayed Message:
０１８：ＥＱ Ｈｉｇｈ Ｃｈｅｃｋ
０１８：ＥＱ Ｈｉｇｈ Ｃｈｅｃｋ
−−
Supplement:
Sound is stopped when the test item is quit.
Test 19
Function: SP MUTE check
Description:
When the test is executed, the sine wave of about 1,049 Hz
(C5) is output from the [LINE OUT] jacks (MAIN L/L+R,
MAIN R, SUB1, SUB2).
Confirm that the "ON" and "OFF" of SP MUTE can be
toggled by pressing the TAB [ ] or the TAB [#] button.
Displayed Message:
０１９：ＳＰ ＭＵＴＥ Ｃｈｅｃｋ
76
Selected screen
When a sound is being produced.
Selected screen
０１９：ＳＰ ＭＵＴＥ Ｃｈｅｃｋ
ＯＦＦ
０１９：ＳＰ ＭＵＴＥ Ｃｈｅｃｋ
ＯＮ
Supplement:
SP MUTE (sound) shall not be controlled with connection/
disconnection of headphones during this test.
Sound is stopped when the test item is quit.
Test 20
Function: MUTE check
Description:
When the test is executed, the sine wave of about 1,049 Hz
(C5) is output from the [LINE OUT] jacks (MAIN L/L+R,
MAIN R, SUB1, SUB2).
Confi rm that the "ON" and "OFF" of MUTE can be toggled
by pressing the TAB [ ] or the TAB [#] button.
Displayed Message:
０２０：ＭＵＴＥ Ｃｈｅｃｋ
During MUTE OFF
During MUTE ON
Selected screen