Yamaha Tyros3 Service Manual page 91

¡Amount of TRIM volume decay:
Change the [LINE IN/MIC TRIM] volume to the minimum
level with the other setups remained as above. (Leave the
[INPUT VOLUME] at the maximum position.)
Measure output terminals.
• AUX OUT/LOOP SEND R: -34.0±2 dBu
¡Amount of volume decay:
Change the [INPUT VOLUME] to the minimum level with
the other setups remained as above.
(Leave the [LINE IN/MIC TRIM] volume at the minimum
level.)
Measure output terminals.
• AUX OUT/LOOP SEND R: -70.0 dBu or less
Check also if connection and disconnection of MIC is
detected by inserting and removing MIC.
Displayed Message:
０２２：ＭＩＣ Ｒ Ｃｈｅｃｋ
０２２：ＭＩＣ Ｒ Ｃｈｅｃｋ
−−
ＭＩＣ Ｒ ＮＯＴ Ｉｎｓｅｒｔｅｄ．
０２２：ＭＩＣ Ｒ Ｃｈｅｃｋ
−−
ＭＩＣ Ｒ Ｉｎｓｅｒｔｅｄ．
Supplement:
[SIGNAL] LED do not light up.
AUX IN/LOOP RETURN input level:
Set the [MASTER VOLUME] to the maximum level.
Set the [AUX IN/LOOP RETURN TRIM VOLUME] to the
maximum level.
Selected screen
When MIC R is unconnected
When MIC R is connected
Connect a level meter to the MAIN L/L+R, R of [LINE OUT]
terminal.
Load should be 10 k Ω.
Input signals from an oscillator to the L/L+R, R of [AUX IN/
LOOP RETURN] terminal.
Input Level: -20 dBu (1 kHz sine wave)
L side: +2.0 ±2 dBu
R side: +2.0 ±2 dBu
Amount of volume decay:
Change the [AUX IN/LOOP RETURN TRIM VOLUME] to
the minimum level with the other setups remained as above.
L side: -75.0 dBu or less
R side: -75.0 dBu or less
Test 23
Function: Switch, LED Check
Description:
When a panel switch is being pressed, a sound is kept
produced at a pitch corresponding to the switch (page 112).
When the switch is released, the sound is stopped.
If there is an LED for the switch, the LED will light up.
The LED will be turned off when the next switch is pressed
correctly.
In case of two-colored LED, both the two colors will light.
Operate the [DATA ENTRY] dial following the indications
on the LCD to check Dial Up and Dial Down. (The number
should increase when turned clockwise and decrease when
turned counterclockwise.)
Displayed Message:
０２３：ＳＷ，ＬＥＤ Ｃｈｅｃｋ
０２３：ＳＷ，ＬＥＤ Ｃｈｅｃｋ
Ｐｕｓｈ ＴＥＭＰＯ ＤＯＷＮ
Tyros3
Selected screen
Indicates a switch name.
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