Yamaha ARIUS YDP-161 Service Manual page 38

YDP-161/YDP-161C
No. Key
F#3 TG1 check
7
(Auto Scaling)
G3 Pitch check
8
G#3 Output Level R check
9
A3 Output Level L check
10
A#3 SW check
11
B3 Lighting of all panel LEDs
12
13 C4 Pedal 1 check
(Soft pedal)
C#4 Pedal 2 check
14
(Sostenuto pedal)
D4 Pedal 3 check
15
(Damper pedal)
D#4 MIDI check
16
E4 Keyboard check by types
17
F4 ROM check 2
18
38
Item
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.
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.
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
When the test item is ended with the [DEMO/SONG] button, the sound stops.
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
When the test item is ended with the [DEMO/SONG] button, the sound stops.
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 specifi 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).
All LEDs should light up.
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).
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).
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).
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).
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).
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).
Test descriptions, judging conditions, etc.
PHONES R: -1.5 dBu ± 2 dB
PHONES R: -41.5 dBu or less