Yamaha Arius YDP-161, Руководство по обслуживанию

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YDP-161/YDP-161C
38
No. Key Item Test descriptions, judging conditions, etc.
7
F#3 TG1 check
(Auto Scaling) The sine wave sounds from the low range in the key range (C2-G4) capable of sounding
while the sound production channel of the sound source is changed one after another.
(Sounds of 32 channels are repeated twice and then the sounds stop.)
Check that no abnormal sound or noise is generated.
When a key is pressed after Auto Scaling, the sine wave sounds. (Single sound, priority
on
fi rst-come)
Press the [DEMO/SONG] button to end this test.
8
G3 Pitch check Check that the sine wave of 441.0 Hz ± 0.2 Hz sounds. (PAN = Center)
Connect the frequency counter to the [PHONES] jack for measurement.
When the test item is ended with the [DEMO/SONG] button, the sound stops.
9
G#3 Output Level R check Check that the sine wave of 1 kHz sounds. (PAN = R)
Connect the level meter (with JIS-C
fi lter) to the [PHONES] jack for measurement and
check that the output level is as follows.
PHONES L: -41.5 dBu or less PHONES R: -1.5 dBu ± 2 dB
When the test item is ended with the [DEMO/SONG] button, the sound stops.
10
A3 Output Level L check Check that the sine wave of 1 kHz sounds. (PAN = L)
Connect the level meter (with JIS-C
fi lter) to the [PHONES] jack for measurement and
check that the output level is as follows.
PHONES L: -1.5 dBu ± 2dB PHONES R: -41.5 dBu or less
When the test item is ended with the [DEMO/SONG] button, the sound stops.
11
A#3 SW check Press switches one at a time in the order as in Table 2 (p.39). The sine wave sounds at
the scale corresponding to each switch being pressed (Refer to Table 2 in p.39.). Also,
when there is an LED corresponding to that switch, the LED lights up while the switch
is pressed.
Check that all switches are pressed correctly, resulting in OK.
Pressing a switch other than speci
fi ed ones results in NG.
When the pressed switch is not detected even though it is actually pressed, no sound is
produced and the test results in NG.
For the OK test result, the sine wave of C4 sounds (for 1 second).
For NG, the sine wave of C2 sounds (continuously until any key is pressed).
12
B3 Lighting of all panel LEDs All LEDs should light up.
13
C4 Pedal 1 check
(Soft pedal) The sine wave of C3 sounds when the test is started and the sine wave of C4 sounds
when the pedal is depressed.
When the pedal is released, the sound of the C4 sine wave stops and the test result is OK.
For the NG test result, the sine wave sounds continuously (until any key is pressed).
14
C#4 Pedal 2 check
(Sostenuto pedal)
The sine wave of C3 sounds when the test is started and the sine wave of C4 sounds
when the pedal is depressed.
When the pedal is released, the sounding of the C4 sine wave stops and the test result is OK.
For the NG test result, the sine wave sounds continuously (until any key is pressed).
15 D4 Pedal 3 check
(Damper pedal) The sine wave of C3 sounds when the test is started and the sine wave of C4 sounds
when the pedal is depressed.
When the pedal is released, the sound of the C4 sine wave stops and the test result is OK.
For the NG test result, the sine wave sounds continuously (until any key is pressed).
16
D#4 MIDI check Connect the [MIDI IN] terminal and [MIDI OUT] terminal with the MIDI cable and execute
the test.
For the OK test result, the sine wave of C4 sounds (for 1 second).
For NG, the sine wave of C2 sounds (continuously until any key is pressed).
17 E4 Keyboard check by types
To check the type of connected keyboard.
Check that the GHD keyboard is connected and result is OK.
If a keyboard other than the GHD keyboard is connected, the result is NG.
For the OK test result, the sine wave of C4 sounds (for 1 second).
For NG, the sine wave of C2 sounds (continuously until any key is pressed).
18
F4 ROM check 2 To check the ROM checksum connected to the CPU bus (Full address).
For the OK test result, the sine wave of C4 sounds (for 1 second).
For NG, the sine wave of C2 sounds (continuously until any key is pressed).