960L Diagnostic User Interface - Lexicon 960L Service Manual

960L Multi-Channel Digital Effects System Service Manual
4. I/O Cage Cards
The functional diagnostics test the hardware on the 960L that do not process audio, as well as the audio
processing circuitry. The non-audio processing sections include the MIDI, clock ports, and serial
communication on 960L. The audio processing is verified with functional diagnostics and a dry audio-
processing algorithm available in the normal operating mode called 8 In 8 Out. Diagnostic testing is
performed on the 960L prior to burn-in.
The troubleshooting diagnostics are those tests that are available to assist a technician, either in-house or
in another part of the world, to debug a 960L to the component level.

960L Diagnostic User Interface:

The primary user interface for the 960L diagnostics is the LARC2. The secondary user interface for the
diagnostics are the LED's on the Reverb card, which indicate Reverb functionality. Lastly a computer
monitor can be connected to the NLX motherboard video port in order to change BIOS settings.
Pressing together and holding for 2 seconds the PROGRAM and MACHINE buttons on the LARC2
immediately after powering on the 960L enters the diagnostics. When the LARC 2 displays
Requesting Menu Mode from 960L . . ., the buttons can be released. In approximately 1 minute 30 seconds
the LARC2 will display the following boot menu:
960L Boot Menu
1) Run 960L
2) Update 960L Software
3) Update LARC2 Boot ROM
4) Update LARC2 Software
5) 960L Diagnostics
Can't lock CD Drive: Access is denied
The Version refers to the latest version of the boot menu that is running. The current version is 1.00R,
however this may change without requiring this document to be updated. The speed refers clock speed of
the Celeron processor. This value is 1-3 MHz below the actual value. So a value of 398 MHz would actually
be a 400 MHz Celeron. The date after the BIOS refers to the date of the Intel SU810 BIOS. Currently
version 5 of the BIOS dated 11/22/99 is the version required running on the 960L.
Pressing the 5 button on the LARC2 enters diagnostics. The display will appear similar to the sample below
on the LARC2 upon entering the diagnostics:
Lexicon 960L Diagnostics
Version X.XX MM DD YYYY HH:MM:SS
*Chameleon Configuration
VxD Version = 6A
6-2
- Version: X.XX Speed: XXX MHz
*****************************
*
*****************************
Num Cards = 1
Card 0 Configuration
Config Valid . . . YES
Subvendor ID . . .4863
56301 IDR . . . . ..0x2301
DB Type . . . . . . .Lexichip III
BIOS: 11/22/99