32
MAY.2005
10: Touch Panel Check
fig.13-17.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.
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 were
detected, you will automatically proceed to the next test.
If touched locations could not be detected correctly, you will automatically
return to the calibration screen.
11: PC-CARD Test
fig.13-20.eps
Check card slot operation.
Insert a PC card into the PC card slot.
Use a PC card formatted by the V-Synth XT.
Press [
] Write/Read tests will be performed.
If they were successful, the display will indicate “OK”.
If the test results were “OK”, you will automatically proceed to the next test
item.
12: Switch & LED Test
fig.13-23.eps
Check the switches and LEDs on the panel.
LEFT Panel:
[V-CARD] [PREVIEW] [KEYPAD] [7] [8] [9] [4] [5] [6] [1] [2] [3] [0] [BANK-]
[BANK+]
The button before it operates it is displayed by “@” on the screen.
After the button is operated, “@” is changed to “.”
LED will be blinking for about one second, and, next be turned off.
LED of MIDI and USB turn on when all buttons of a left panel are operated.
Press the [
] button of the right panel, to turn off these LEDs.
The display of the screen changes from “*” into “.” at this operation.
RIGHT Panel:
[MODE] [CTRL] [EXIT] [DEC] [
] [INC] [SHIFT] [
] [
] [
]
After the button is operated, “O” is changed to “.”
When all buttons and VALUE knob (ENTER) at the right of the panel are
pushed, you will automatically proceed to the next test item.
13: Noise Check
Use A noise meter to measure the residual noise.
Set the input filter of noise meter to DIN-Audio.
Verify that the noise is less than -90dBm on MAIN OUT, and less than -84dBm
on DIRECT OUT.
Problem
Items of check
It fails in the calibration many
times.
INVERTER BOARD:
IC21,Q41,Q42,CN22,CN24
Exchange the Touch-Panel
(or LCD ASSY)
Problem
Items of check
“OK” is not displayed.
Confirm the FPC cable is surely
locked to the connector of both
MAIN and CARD BOARD.
MAIN BOARD:
IC523,519,526,525,522,520,527
CARD BOARD: CN10,11
Problem
Items of check
LED is not turned on.
Confirm the FPC cable is surely
connected between PANEL and IN-
VERTER BOARD.
INVERTER BOARD: IC18,Q48-
52,Q31-33,Q44
PANEL BOARD: each of LEDs.
NG on switch test.
Confirm the FPC cable is surely
connected between PANEL and IN-
VERTER BOARD.
INVERTER BOARD: IC17
PANEL and ENCODER BOARD :
each of switchs.
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...
