Roland VS-2400CD Service Notes page 20

[Keyboard Connected]
The keyboard connection will be checked.
1.
If a keyboard is connected and is operating normally, the display will
indicate "OK."
2.
If a keyboard is not connected, or if there is a problem, the display will
indicate "NG."
Explanation of test items
[01:LCD Check]
Checks the LCD screen display.
Each time you press the switch, three types of screen will alternate; white,
black, and text.
[02:Switch Check]
Checks panel board switch operation.
fig.2
1.
Check ON/OFF for all switches on the panel.
2.
If two or more switches are pressed simultaneously during this test, the
LED will blink to prompt you not to do so.
[03:LED Check]
Checks panel LED operation.
1.
Check that all panel LEDs are lit.
2.
Press the [PLAY] button to light the LEDs one at a time.
3.
You can press the [STOP] button to go backward.
4.
When you have checked all LEDs, they will all be lit.
[04:FS & MV Check]
Checks operation of the foot switch and monitor volume.
[Fig.2]
fig.3
1.
The display will indicate "ON" when you press the foot switch, and
"OFF" when you release it.
2.
Verify that the monitor volume causes the display value to change in a
range of "-90" to "+60".
[05:Encoder Check]
Checks encoder operation.
Turn the [TIME/VALUE] knob at least three clicks to left and right.
[06:Digital Check]
Checks digital audio operation (Coaxial, Optical).
fig.4
[Fig.4]
1.
Connect devices to Coaxial IN/OUT.
2.
Press the [F3 (Coax)] button.
3.
Verify that the Coaxial LOCK Status is "LOCK," and that the audio from
Digital In is being output from Digital Out.
4.
Connect devices to Optical IN/OUT.
5.
Press the [F4 (Opt)] button.
6.
Verify that the Optical LOCK Status is "LOCK," and that the audio from
Digital In is being output from Digital Out.
[07:IDE Check]
Checks IDE hard disk drive operation.
VS-2400CD
[Fig.3]
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