Roland Fa 06, Заметки по обслуживанию

Страница: 21 / 67

21
Feb. 2014 FA-06
5. ENCODER
This verifies the operation of the encoders.
fig.test5-1.eps
Turn the encoder counterclockwise and verify that the value decreases to
0
.
fig.test5-2.eps
Next, turn the encoder clockwise. The value increases from 0 , and when
it reaches 48 , execution automatically advances to the next test item.
6. SW/LED
This verifies the operation of LED-equipped switches.
fig.test6.eps
Follow the on-screen indications and press each button whose LED lights
up.
* The LEDs light up starting at the left edge of the panel (the bender section).
When all buttons with LED have been pressed, execution automatically
advances to the next test item.
7. SW
This verifies the operation of switches that have no LEDs.
fig.test7.eps
Follow the on-screen indications and press the switches.
When all switches have been pressed, execution automatically advances
to the next test item.
8. LED
This verifies the illumination of the 7-segment LED.
fig.test8.eps
Press
TAP
.
Verify that each of the segments light in sequence.
If no problems are found, press to advance to the next test item.
9. LCD
This verifies the display of the LCD screen.
fig.test9-1.eps
1.
Press INC .
2.
At the displayed screen, check for the presence of discolored dots, uneven
colors, missing dots, video artifacts, soiling, and scratches.
3.
Press INC to advance to the next pattern, and perform the same checks.
fig.test9-2.eps
7-color bar and gray scale
fig.test9-3.eps
Gray scale and red, green, blue