Roland V-Synth Service Notes page 23

Mar.2003
Check the operation of the hold pedal jack and the control pedal jacks.
* Before you begin this test, connect an expression pedal to each pedal jack.
• Advance the expression pedal, and then return it. Verify that the value
changes in a range of 0 to 127.
• Indications of "OK" will be displayed if the maximum value is 127 and
the minimum value is 0, and a confirmation tone will be output.
• If "OK" is displayed for each test, you will automatically proceed to the
next test item.
Problem
HOLD NG
CTL1 NG
CTL2 NG
12: Touch Panel Calibration
Calibrate the touch panel.
A touch pen is used for calibration.
fig.13-16_70
• Using the touch pen, touch the center of "+" symbol enclosed by the box.
• When the touch has been detected, the box will move to the next point.
• Verify that the V-Synth produces a beep when you touch the screen.
• When you have touched all four points on the screen, calibration will be
performed.
• If calibration was successful, the display will indicate "Calibration:OK"
and you will automatically proceed to the next test.
* If calibration was unsuccessful, you will return to the calibration screen.
13: Touch panel A/D check
fig.13-17_70
• Using the touch pen, touch the center of "+" symbol enclosed by the box.
• When the touch has been detected, the box will move to the next point.
• If a problem is detected during this check, you will automatically return
to the "Touch Panel Calibration" screen, and calibration will be
performed once again.
• When you have touched all four points on the screen and no problems
25
Items to check
SUB BOARD JK4
SUB BOARD JK3
SUB BOARD JK2
were detected, you will automatically proceed to the next test.
* If the touched locations could not be detected correctly, you will automatically
return to the calibration screen.
14: XY-Pad Calibration
Calibrate the XY-PAD.
* As for the LCD, a touch pen is used for this calibration operation as well.
fig.13-18_70
• The LCD will display a graphic of the XY-PAD. On the X-Y-PAD, use the
touch pen to touch the location that corresponds to the "x" symbol
enclosed by "[ ]".
• When the touch has been detected, the "[ ]" in the screen will move to the
next point.
• When all four points have been touched, calibration will be performed.
• If calibration was successful, the display will indicate "Calibration:OK,"
and you will automatically proceed to the next test.
* If calibration was not successful, you will return to the calibration screen once
again.
15: XY-PAD A/D check
fig.13-19_70
• The LCD will display a graphic of the XY-PAD. On the XY-PAD, touch
the location that corresponds to the "x" symbol enclosed by "[ ]."
• When the touch has been detected, the [ ] will move to the next point.
• When all four points have been touched and no problems have been
detected, you will automatically proceed to the next test.
* If the touched locations could not be detected correctly, you will return to the
calibration screen.