77
Tyros4
020:MUTE Check
OFF
During MUTE OFF
020:MUTE Check
ON
During MUTE ON
Supplement:
Sound is stopped when the test item is quit.
Test 21
Function:
MIC check
Description:
Check output sound with MIC input. Check that there is no
abnormal sounds or noise.
The [MASTER VOLUME] can be set to any level.
Set the [MIC GAIN] to the maximum level.
Connect a level meter (JIS-C curve) to the L/L+R of [AUX
OUT/LOOP SEND] terminal. (Load should be 10 k
Ω
.)
Input signal of -45 dBu (1 kHz sine wave) from an oscillator
to the [MIC INPUT] phone jack and measure at output
terminals.
• AUX OUT/LOOP SEND L/L+R: +11.0±2 dBu
Check also if connection and disconnection of MIC is
detected by inserting and removing MIC.
¡
Amount of GAIN volume decay:
Change the [MIC GAIN] volume to the minimum level
with the other setups remained as above.
Measure output terminals.
• AUX OUT/LOOP SEND L/L+R: -25.0±3 dBu
The same check is performed for the cannon plugs.
(Level measurement, Connection and disconnection check of
MIC, Amount of GAIN volume decay)
When inserting the cannon plug, short the terminal to GND
where no signal is input.
¡
To input a signal into the Hot side (pin No. 2), short the
Cold side (pin No. 3) to GND and input a signal between
Hot and GND.
¡
To input a signal into the Cold side (pin No. 3), short the
Hot side (pin No. 2) to GND and input a signal between
Cold and GND.
Displayed Message:
021:MIC Check
Selected screen
021:MIC Check
−−
MIC NOT Inserted.
When MIC is unconnected
021:MIC Check
−−
MIC Inserted.
When MIC is connected
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.
Connect a level meter to the MAIN L/L+R, R of [LINE OUT]
terminal. (Load should be 10 k
Ω
.)
Input signals -20 dBu (1 kHz sine wave) from an oscillator
to the L/L+R, R of [AUX IN/ LOOP RETURN] terminal and
measure at output terminals.
• LINE OUT MAIN L/L+R: +2.0 ±2 dBu
• LINE OUT MAIN R:
+2.0 ±2 dBu
Содержание Tyros4
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Страница 44: ...44 Tyros4 D D 1 28 56 IC23 48P TSOP 29 DM Circuit Board 2NA WT75980 ...
Страница 46: ...46 Tyros4 DJACK Circuit Board to DM CN600 E E F F 2NA WT90150 ...
Страница 47: ...47 Tyros4 to DM CN3 to DM CN4 E E F F Pattern side Component side 2NA WT90150 ...
Страница 50: ...50 Tyros4 PNR Circuit Board H H to PNL CN4 to DM CN901 2NA WT90310 ...
Страница 51: ...51 Tyros4 Component side 2NA WT90310 H H ...
Страница 52: ...52 Tyros4 PNR Circuit Board I I 2NA WT90310 ...
Страница 53: ...53 Tyros4 Pattern side 2NA WT90310 I I to PNC CN2 ...
Страница 54: ...54 Tyros4 PNL Circuit Board J J 2NA WT90240 ...
Страница 55: ...55 Tyros4 Component side J J to PNR CN2 not installed 2NA WT90240 ...
Страница 56: ...56 Tyros4 PNL Circuit Board K K to CK CN91 to LCL CN152 2NA WT90240 ...
Страница 57: ...57 Tyros4 Pattern side 2NA WT90240 K K to WHEEL ASSEMBLY to PNLS CN202 ...
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