Yamaha A4000, Руководство по обслуживанию, Страница: 26 / 61

A5000/A4000
26
20 ASSIGNABLE OUT-3
Insert the appropriate phone plugs into the ASSIGNABLE OUT-3
terminal. Check the output wave form and the output level of each
output by using an oscilloscope, an AC voltmeter (with JIS-C filter)
and a distortion factor meter.
ASSIGNABLE OUT-3: 1 kHz +/- 1 Hz, sine wave, less than 0.5%
distortion
0 +/- 3 dBm (10 k ohm load)
ASSIGNABLE OUT-4: less than -70 dBm (10 k ohm load)
While sounding, the LCD shows as below.
RESULT OF THE TEST
No display
END OF THE TEST
After pressing the [ENC5] STOP, the test will be finished.
21 ASSIGNABLE OUT-4
Insert the appropriate phone plugs into the ASSIGNABLE OUT-4
terminal. Check the output wave form and the output level of each
output by using an oscilloscope, an AC voltmeter (with JIS-C filter)
and a distortion factor meter.
ASSIGNABLE OUT-3: less than -70 dBm (10 k ohm load)
ASSIGNABLE OUT-4: 1 kHz +/- 1 Hz, sine wave, less than 0.5%
distortion
0 +/- 3 dBm (10 k ohm load)
While sounding, the LCD shows as below.
RESULT OF THE TEST
No display
END OF THE TEST
After pressing the [ENC5] STOP, the test will be finished.
22 ASSIGNABLE OUT-5
Insert the appropriate phone plugs into the ASSIGNABLE OUT-5
terminal. Check the output wave form and the output level of each
output by using an oscilloscope, an AC voltmeter (with JIS-C filter)
and a distortion factor meter.
ASSIGNABLE OUT-5: 1 kHz +/- 1 Hz, sine wave, less than 0.5%
distortion
0 +/- 3 dBm (10 k ohm load)
ASSIGNABLE OUT-6: less than -70 dBm (10 k ohm load)
While sounding, the LCD shows as below.
RESULT OF THE TEST
No display
END OF THE TEST
After pressing the [ENC5] STOP, the test will be finished.
23 ASSIGNABLE OUT-6
Insert the appropriate phone plugs into the ASSIGNABLE OUT-6
terminal. Check the output wave form and the output level of each
output by using an oscilloscope, an AC voltmeter (with JIS-C filter)
and a distortion factor meter.
ASSIGNABLE OUT-5: less than -70 dBm (10 k ohm load)
ASSIGNABLE OUT-6: 1kHz +/- 1Hz, sine wave, less than 0.5%
distortion
less than -70 dBm (10 k ohm load)
While sounding, the LCD shows as below.
RESULT OF THE TEST
No display
END OF THE TEST
After pressing the [ENC5] STOP, the test will be finished.
24 DIGITAL & OPTICAL OUT
Connect the D/A converter in the DIGITAL OUT and OPTICAL
OUT terminals. Check each output wave form and each output level
of each output by using an oscilloscope. Check the sine wave is
output by listening
While sounding, the LCD shows as below.
RESULT OF THE TEST
No display
END OF THE TEST
After pressing the [ENC5] STOP, the test will be finished.
O u t p u t o n
2 1 : A S S I G N A B L E O U T - 4
AUTO MANUAL
O u t p u t o n
O u t p u t o n
O u t p u t o n
O u t p u t o n
2 2 : A S S I G N A B L E O U T - 5
AUTO MANUAL
2 3 : A S S I G N A B L E O U T - 6
AUTO MANUAL
2 4 : D I G I TA L & O P T I C A L O U T
AUTO MANUAL
2 0 : A S S I G N A B L E O U T - 3
AUTO MANUAL