Button Test - Akai MPD226 Service Manual

The LED Test has two phases:
1. Animated test where the LEDs are lit one at a time. This is to check for shorts
between LEDs.
2. ALL_LEDS_ON test where all the LEDs are lit. This is to help check for faulty
LEDs.

Button Test

The ADT1 manufacturing Test application will indicate the buttons to be pressed. The
Tester should individually press and release the indicated buttons.
When the ADT1 manufacturing Test application detects that the button has been pressed it
will change the graphic symbol on the User Interface and, where possible, it will send a
message to light the LED that is associated with the button on the MPD226.
The buttons can be pressed in any order, but if ADT1 detects two button events at exactly
the same time it will assume that these buttons are shorted together and fail the test.