Akai AD20G, Service Manual

Page: 18 / 36

AD20 TEST PROCEDURE
Creation Date
：
2019/9/26
Version 0.2
5
2. Component Test
2.1 Button Test
Red Button
：
Indicates that the test has not been performed.
Green Button
：
Indicates that the button has been “pressed”
Blue Button
：
Indicates that the button has been “released”

The button completes the
test.
The corresponding LED will also light up, press once to turn on, then press off.
BANK clicks bright green, then clicks bright red.
OP needs to visually check whether all LEDs are lighting normally.
2.2 Keybed Test
When pressed, it will light green.
Pass When released, it will light blue, indicating that the key is tested for Pass.
2.3 VR Knob Test
Red
：
Indicates that the test has not been performed.
Red to Green
：
Indicates Knob rotates counterclockwise to the minimum value.
Red to Yellow
：
Indicates Knob rotates clockwise to the maximum value.
Blue Knob
：
Indicates that Knob has completed the forward and reverse rotation to the
operation

The knob completed the test.