Touch Panel Test; All/Color By Color Panel Test; Individual Lighting Test; Controller Input/Drive Test - Yamaha M7CL-32 Service Manual

3) Color box
The color changes in gradation from right to left growing
into black. Check that the color (5 x 4) other than black is
displayed in gradation properly.
4)-8) Have the entire screen covered in white, red, green, blue
and black (the screen below is the example in green) and
check that there is no dot that is black or in any other color.

1-20 TOUCH PANEL test

Contents: Checks input from the touch panel.
Touch the LCD and touch-point scales will be shown
at the top and left sides in the LCD.
Each touch switches between low and high
brightness of the LCD.
When the visual check is over, select [OK] or [NG]
in the result dialog of the test program.
Example of executing screen
NG TOUCH PANEL
NG TOUCH PANEL
AutoNext
START PAUSE CLOSE
Input the result of the check with this dialog.
LCD CHECK
OK
OkData TxData
NG
LCD display

1-21 All/Color by Color PANEL test

1-22 Individual lighting test

1-23 Controller input/drive test

· Changing test items
In the test mode, press any of the three switches simultaneously
and then release them and the test item will change in the order
shown below.
1) All LED on test
2) Individual lighting
3) Fader Inspection
4) Switch Input Test
5) Encoder/Analog Volume Input test
1) All LED on test
All the LEDs on the circuit board will light up.
Check as described below.
· Check visually that all the LEDs are lit.
· Check visually that no LED is lighting in different color.
∗ No result will be shown on the PC display.
· The initial value of the LED brightness is the one-eighth of
analog volume value at start-up.
· Press any key and then release it to increase the brightness.
Next to the maximum brightness, the minimum brightness will
be selected.
· Encoder or analog volume changes the brightness.
· Move a fader and the adjacent fader of a pair of odd/even
number will move in conjunction with it.
2) Individual lighting
LEDs in a vertical line light on one line by one line from left to
right and LEDs in a horizontal line light on one line by one line
from top to bottom automatically.
The order of lighting can be inverted or be put back to the original
order.
Check as described below.
· Check visually that all the LEDs in place are lit.
· Check visually that all the LEDs which should not light are
not lit.
∗ No result will be shown on the PC display.
M7CL-32/M7CL-48
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