Roland Boss GT-10 Service Notes page 18

Mar. 2008
5.
Press [ ] to display the screen shown below.
fig.3lcdenc3.eps
6.
Verify that the LCD screen has no missing dots.
7.
Press [ ] to display the screen shown below.
fig.3lcdenc4.eps
8.
Verify that the lines on the four sides are unbroken.
9.
Press [EXIT] to return to the test-item select screen.
4. SW/LED
Testing of Operation Switches and LEDs
1.
Use the dial to choose 4: SW/LED.
2.
Press [CATEGORY/ENTER] to display the screen shown below.
fig.4swlcd2e.eps
3.
If ########## appears, verify that the corresponding LED is illuminated.
4.
Press the button indicated by *******.
* Pressing a wrong button makes the message NG! appear.
5.
If ########## appears, verify that the corresponding LED goes dark.
6. Repeat steps 3 through 5.
When as the final item the LED for PEDAL 1 goes dark, execution
automatically advances to the next test.
5. OUTPUT LEV
Testing of the OUTPUT Control
fig.5outputlev2.eps
1.
Turn the OUTPUT LEVEL control to minimum.
2.
Turn the OUTPUT LEVEL control to maximum.
If OK is displayed, execution automatically advances to the next test.
18
6. PARAM KNOB
Testing of the PARAMETER Controls
fig.6paramknob2.eps
1.
Turn the PARAMETER 1 control clockwise by 360 degrees or more.
2.
Verify that the these values are displayed: 1/4 -> 2/4 -> 3/4 -> 4/4 -> OK.
3.
In the same way, successively turn the PARAMETER 2 through
PARAMETER 4 controls clockwise by 360 degrees or more.
4.
Verify that the these values are displayed: 1/4 -> 2/4 -> 3/4 -> 4/4 -> OK.
* Turning too rapidly may cause the correct results to fail to be displayed.
* Turning two or more controls at the same time causes NG (not OK) to be
displayed. Turn one at a time.
If OK is displayed, execution automatically advances to the next test.
7. INT EXP
Testing of the Expression Pedal and Pedal-
calibration Settings
* The CPU A/D value is displayed for identification of defect factors. No special
verification is required during the course of the procedures.
fig.7intexp2.eps
1.
Depress the heel of the GT-10's expression pedal all the way, then press
the [WRITE] button.
2.
Verify that OK is displayed.
3.
In the same way, depress the toe of the expression pedal all the way, then
press the [WRITE] button.
fig.7intexp3.eps
4.
Verify that OK is displayed.
Execution advances to the screen shown below.
fig.7intexp4.eps
GT-10