28
MAY.2005
Button operations
Entering Test mode
While holding down the two buttons [PREVIEW] [BANK-], turn on the power.
Continue holding down the buttons until you hear the beep.
The top screen of test mode will then appear.
In the top page, press [ENTER] (VALUE knob), to begin fron test item1: Shock
test.
For test items 3-5, 7-12 the next test item will bigin automatically when each
test completes successfully.
The top page displays a list of the test items. You can use [
] / [
] (or turn
VALUE) to move the cursor, and the press [DEC] to directly select the item.
By pressing [SHIFT]+[
]+[
] you can forcibily move to the next or previous
test item even if the current test has not yet been copleted.
From each test mode you can press [MODE] to return to the top page.
For details on each screen, refer to the test item detailes below.
Exiting Test mode
Turn the power off.
Test item details
0: Test Mode Top page (Identifying the
version number)
fig.13-1.eps
Verify that Program ROM version.
If the version is not appropriate, perform update.
For details on the update procedure, refer to “Updating the system.”
Press [
] to proceed to the next test item.
1: Shock Test
fig.13-2.eps
The sequence note pattern is repeated for the test. (MAIN-OUT, PHONES)
Listen to the sound, and verify that there is no noise or other problem with the
sound.
Perform the impact test.
Lift the body of front side to a higher position (about 1-inch) and drop it, when
you check the sound (unusual sound or a sound breaks off).
The same thing is performed.(right-hand side and left-hand side)
Verify whether the screw detainment part in the case each part loosens and
case resonation are not generated.
Connect the headphones, and listen to the sound.
Set the VOLUME to the minimum, and the the maximum position, and verify
that there is no cracking or other abnormality.
The sound will stop when you press [DEC], and resume when you press [DEC]
again.
Verify that the output is muted while you hold down [INC].
Press [
] to proceed to the next test item.
2: Beep Check
Press [INC] once, and a high-pitched and a low-pitched beep will each sound
once.
Verify that the beeps are sounded, and then press [
] to proceed to the next
test.
fig.13-3.eps
Verify that a beep is sounded from the internal speaker.
Problem
Items of check
The sound becomes interrupted.
It enters an abnormal state of the
pronunciation.
The noise mixes.
Confirm the each of cables are
surely connected.
The display flickers.
It reboots.
Confirm the each of circuit board
are fastened.
Problem
Items to check
Beep is not produced
INVERTER BOARD SP1 and
around circuit, IC19
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...
