Diagnostics Suite - Lexicon 960L Service Manual

Press & hold down the 'PROGRAM' + 'ENTER' keys while powering on the LARC2 by connecting the
-
barrel end of the external power supply cord to the connector labeled 'POWER' on the LARC2 rear
panel.
Release the 'PROGRAM' + 'ENTER' keys when the chase pattern appears on the Meter Board and
-
Keypad LED's.
NOTE: When the 'PROGRAM' + 'ENTER' keys are used to enter the Interactive Diagnostics, the #8 RED
LED will be lit to indicate that a keystuck error has occurred. This is because the 'PROGRAM' + 'ENTER'
keys were being held during the Power On Diagnostic Tests. This behavior is normal, and is not a fault with
the LARC2.
Press the 'PROGRAM' + 'MACHINE' keys simultaneously to execute the 'Repetitive Test'.
NOTE: During the 'Repetitive Test' the Meter Board and Keypad LED's are lit sequentially (one
LED at a time). The following diagnostic tests are executed in the sequence shown in the table
below:
TEST:
LCD Display
Fader/Motor
Test
Memory Test

Diagnostics Suite:

This Diagnostic Suite was designed to help reduce the test time during the Manufacturing Test process by
automatically executing all of the Interactive Diagnostics one test after the other in the order listed below:
1. Self Test
2. LCD Test
3. KEY Test
4. LED Test
5. Joystick Test
6. Fader/Motor Test
7. Lexicon Test
8. Memory Test
DESCRIPTION:
Eight different screens are displayed on
the LCD Display
The same test that is used during
Interactive Diagnostics
The same test that is used during
Interactive Diagnostics
Lexicon
6-41