Roland V-Synth GT Service Notes page 37

May, 2007
28. A/D
This performs verification of the Bender and Aftertouch controls, control
knobs, and sliders.
A screen like the one shown below is displayed on the LCD.
fig.28-ad.eps_90
• Move the Bender control left and right all the way.
Verify that a value of -8192 is displayed when the Bender is moved to the
left and that a value of 8192 is displayed when the Bender is moved to
the right. If no problem occurs, OK is displayed and a beep is played.
• Move the Bender control all the way toward MODULATION.
Verify that a value of 127 is displayed. If no problem occurs, OK is
displayed and a beep is played.
• Verify the Aftertouch. Deeply press in any key.
Verify that a value of 127 is displayed. If no problem occurs, OK is
displayed and a beep is played.
• Verify the control knobs. Turn the controls displayed on the LCD screen
left and right all the way.
Verify that a value of 0 is displayed when the control is turned all the
way to the left.
Verify that a value of 127 is displayed when the control is turned all the
way to the right.
If no problem occurs, OK is displayed and a beep is played.
For controls that have a center click, verify that a value of 64 is displayed
when the control is centered.
• Verify the sliders. Move the sliders displayed on the LCD screen up and
down all the way.
Verify that a value of 0 is displayed at the lowest position.
Verify that a value of 127 is displayed at the highest position.
If no problem occurs, OK is displayed and a beep is played.
When OK has been displayed for all items, execution automatically
advances to the next test item.
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29. KEYBOARD/STORAGE
This performs verification for sound generation, velocity, USB storage, and
USB MIDI.
A screen like the one shown below is displayed on the LCD.
fig.29-1-keyboard01.eps_90
Pressing a key plays a Piano sound (attenuated), and the note number and
velocity value of the key are displayed on the LCD screen.
Verify that sound is generated for all keys.
Also verify that the volume level changes according to the velocity with which
the keys are played.
If no problem is encountered, press [INC]. This is not [
advances execution to the "30. MIC NOISE" test.
A screen like the one shown below is displayed on the LCD.
fig.29-2-keyboard02.eps_90
Pressing a key plays a Organ sound (sustained), and the note number and
velocity value of the key are displayed on the LCD screen.
An eight-note check is performed. Finger the keys to verify.
On the computer, start Explorer.
Verify that the connected USB memory device is visible as a removable drive.
On the computer, use a sequencer program such as Cakewalk to play a MIDI
file, and verify that sustained sound is output from the MAIN OUT
connectors.
* A number of sample MIDI files can be found in C:\WINDOWS\Media.
If no problem is encountered, cancel the connection for the USB memory
device on the computer and press [
V-SYNTH/GT
]. Pressing [
] to advance to the next test item.
]