Roland JD-XA, Заметки по обслуживанию

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30
Jul. 2015 JD-XA
17. USB FUNC
This verifies the operation of the USB COMPUTER connector.
+————————————————+
|USB FUNC |
|Press [>] |
+————————————————+
1.
Using the USB cable, connect the computer to the USB COMPUTER
connector.
2.
Play KY004_USB.WAV on the computer.
3.
Verify that signals like the ones shown below are output from the
OUTPUT L/MONO and R jacks.
L/MONO: 1-kHz sine wave at 7.0±2.0 Vpp
R: 1-kHz sine wave at 7.0±2.0 Vpp
fig.test-17.eps
4.
Detach the PC and the oscilloscope.
5.
Press to advance to the next test item.
18. Wave ROM
This verifies the results of the check of the entire Wave ROM area.
+————————————————+
|Wave ROM:OK |
|Press [>] |
+————————————————+
This test has started when 2. Device (p. 26) was executed. If 2. Device
Test was not executed, the test starts at the time when this 18. Wave
ROM Test is executed. While Wave ROM:Busy is displayed, the testing
is in progress. Wait for the test to finish.
When OK appears, press to advance to the next test item.
19. MUTE
This verifies muting operation.
+————————————————+
|MUTE=Off:[ENTER]|
| |
+————————————————+
1.
Connect the headphones to the PHONES jack and verify that sound is
heard.
* Using the
MASTER Volume
knob, adjust the volume.
2.
Verify that sound is muted only when
Enter
is pressed.
3.
Connect the amp-equipped monitor speakers to the OUTPUT R jack (Tip
and Ring), and verify that sound is muted only when
Enter
is pressed.
4.
Connect the amp-equipped monitor speakers to the OUTPUT L/MONO
jack (Tip and Ring), and verify that sound is muted only when
Enter
is
pressed.
5.
Connect the amp-equipped monitor speaker to the
ANALOG DRY
jack,
and verify that sound is muted only when
Enter
is pressed.
6.
Connect the headphones to the
CLICK
jack, and verify that sound is
muted only when
Enter
is pressed.
7.
Connect the amp-equipped monitor speakers to the
OUTPUT L/MONO
jack (Tip and Ring).
+————————————————+
|MUTE SW [MUTE] |
|Press [>] |
+————————————————+
8.
Press
MUTE
and verify that the sound is muted.
9.
Press to advance to the next test item.
20. Keyboard
This verifies the operation of the keyboard.
+————————————————+
|1/2 Pno |
| |
+————————————————+
1.
Play all keys, and verify that notes are produced with piano sound. Also
verify that the volume level changes according to the velocity with which
the keyboard is fingered and the value of
VELO changes.
2.
Press + .
A screen like the one shown below is displayed.
+————————————————+
|2/2 Org |
| |
+————————————————+
3.
Play all keys, and verify that notes are produced with organ sound.
4.
Detach the headphones and the amp-equipped monitor speakers.
5.
Press to advance to the next test item.
21. Factory Reset
This performs a factory reset.
+————————————————+
|Press [ENTER] |
|Factory Reset |
+————————————————+
1.
Press Enter .
A factory reset is executed.
When the factory reset is in progress, Executing... is displayed, and
when it finishes, execution automatically advances to the next test item.
22. ErP Check
This verifies the operation of the auto power off function.
+————————————————+
|Press [WRITE] |
|ErP Power Off |
+————————————————+
1.
Press
Write
, and verify that the power to the unit is switched off.
2.
Return the power switch to the off position.