31
V-SynthXT
fig.13-11.eps
Press [
] to proceed to the next test item.
7: Encoder Test
fig.13-12.eps
Check the Rotary Encoder using the [VALUE] knob.
Turn the [VALUE] knob clockwise once, and counter-clockwise once.
If clockwise rotation produces a value of +24 and counter-clockwise
rotation produces a value of -24, the LCD screen will indicate “OK”
If both rotations are “OK”, you will automatically proceed to the next test item.
8: A/D Test
fig.13-13.eps
Check the rotary knobs (E1-E8).
Check each knob in order to E1 to E8.
If the order is incorrect, the “OK” indication will not be displayed.
It turns in order of control knob “Left-right-left”.
Turn the knob to the left end, the first “OK” is displayed.
Turn the knob to the right end, the second “OK” is displayed and beep is
sounded.
Turn the knob to the left end again, the third “OK” is displayed and beep is
sounded.
The third “OK” means completion. Operate the next knob similarly.
A sweep tone will be output during the operation.
If the check of all of the eight knobs is completed, you will automatically
proceed to the next test item.
9: Touch Panel Calibration
Calibrate the touch panel.
A touch pen is used for calibration.
fig.13-16.eps
Using the touch pen, touch the center of “+” symbol enclosed the box.
When the touch has been detected, the box will move to the next point.
Verify that the V-Synth XT produces a beep when you touch the screen.
When you have touched all four points on the screen, calibration willbe
performed.
If calibration was successful, the display will indicate “Caribration:OK” and
you will automatically proceed to the next test.
If calibration was unsuccessful, you will return to the calibration screen.
Problem
Items of check
The contrast doesn’t change.
Confirm the FPC cable is surely
connected between MAIN and MIC
BOARD.
PANEL BOARD: VR11
MIC BOARD: IC23
The defect is confirmed to the LCD
display.
Exchange the LCD ASSY.
Problem
Items of check
“OK” is not displayed.
Confirm the FPC cable is surely
connected between ENCODER and
INVERTER BOARD.
ENCODER BOARD: EN1, CN3
INVERTER BOARD: CN23
Problem
Items of check
“OK” is not displayed.
PANEL BOARD: VR1-8,IC1
Summary of Contents for V-Synth XT
Page 31: ...35 V SynthXT...
Page 33: ...38 MAY 2005 CIRCUIT BOARD MAIN fig b main1 eps View from components side...
Page 34: ...39 V SynthXT CIRCUIT BOARD MAIN fig b main2 eps View from foil side...
Page 40: ...51 MAY 2005 V SynthXT CIRCUIT BOARD PANEL fig b panel1 eps View from components side...
Page 41: ...53 MAY 2005 V SynthXT CIRCUIT BOARD PANEL fig b panel2 eps View from foil side...
Page 45: ...59 MAY 2005 V SynthXT CIRCUIT BOARD JACK fig b jack1 eps View from components side...
Page 46: ...61 MAY 2005 V SynthXT CIRCUIT BOARD JACK fig b jack2 eps View from foil side...
