Led Test - Lexicon 960L Service Manual

960L Multi-Channel Digital Effects System Service Manual
NOTE: Pressing the 'Lexicon' key will exit the test. Be sure the 'Lexicon' key is the last key pressed when
testing the keys. The 'Lexicon' key can also be used to bypass the Fader Touch tests if necessary.
NOTE: If a fader is touched when the test is executed an error message is sent to the LCD display, and
also to the Debug Port as shown in the example below:
A fader is being touched.
**** Press '+' (or Enter on debug port) key to acknowledge.
Press the '+' key on the LARC2, or press 'ENTER' on the Debug Terminal to continue.
NOTE: If the Key Test is exited prior to testing all of the keys, an error message is sent to the LCD display,
and also to the Debug Port reporting the names of keys that were not pressed. An example of the error
message displayed when the 'JOYSTICK' and 'FINE ADJ' were not pressed is shown below:
Failure on key JOYSTICK
Failure on key FINE ADJUST
**** Press '+' (or Enter on debug port) key to acknowledge.
Press the '+' key on the LARC2, or press 'ENTER' on the Debug Terminal to continue.

LED Test:

This test is used to verify the operation of the LED's and driver circuitry of the (12) Main Board LED's, and
the (24) Meter Board LED's. When the test is executed, the 'MACHINE' key is used to advance the test to
the next LED.
IMPORTANT: When the LARC2 is reset, all of the LED's on the Main Board and Meter Board are turned on,
and the brightness of the LED's may vary considerably because the LED's are not being scanned. The LED
Test should always be used whenever it is necessary to compare the brightness of the LED's because the
LED's are being scanned during the LED Test.
When the test is executed, the following message is sent to the LCD display, and also to the Debug Port as
shown in the example below:
Press 'MACHINE' ('n' on debug port) to advance, 'ENTER' when finished.
NOTE: When the LED Test is exited before all of the LED's have been tested, an error message is sent to
the LCD display, and also to the Debug Port as shown in the example below:
Did not check every LED.
**** Press '+' (or Enter on debug port) key to acknowledge.
Press the '+' key on the LARC2, or press 'ENTER' on the Debug Terminal to continue.
Refer to the table below for more information about the behavior of the Main Board 'keypad' and Meter
Board LED's during the LED Test:
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