Lexicon 960L Service Manual page 62

960L Multi-Channel Digital Effects System Service Manual
Loop Back Not installed
TEST 8: Keystuck & Fader Touch Test
This test checks for keys stuck (closed) on the LARC2 Main Board, or if any of the Faders were being
touched during the Power On Diagnostic tests.
PCMCIA Card Detection:
•
During this operation, the Power On Diagnostics checks for presence of a PCMCIA Card installed on the
Option Board, if a PCMCIA card has been detected a flag is set.
Voltage Test:
•
During this operation, a voltage test is performed to verify the +12V Power Supply is operating between 10-
13 volts by reading the A/D Converter value of the 12VSENSE signal.
NOTE: If a PCMCIA Card was detected during the PCMCIA Card Detection routine (above), the card is now
initialized, and the card type is also detected.
⇒ If the Option Board and PCMCIA Card were present, the LARC2 will now enter the 'Option Board Menu'
as shown in the example below: (Refer to the Option Board Menu section of this document for more
information.)
NOTE: The top line of the 'Interactive Diagnostics' menu displays the date and time of the Boot ROM
build, and line 2 displays the Boot ROM version (the actual text may vary).
⇒ If the 'PROGRAM' + 'MACHINE' keys were pressed during the Power On Diagnostics, the LARC2 will
now request the Menu mode from the 960L Mainframe (when the LARC2 is connected to a 960L). The
LCD display on the LARC2 will indicate the following:
Requesting Menu Mode from 960L...
⇒ If the 'PROGRAM' + 'MACHINE' keys were not pressed during the Power On Diagnostics, the LARC2
will now perform a normal boot process, and attempt to establish communications with the 960L
Mainframe (when the LARC2 is connected to a 960L). The LCD display on the LARC2 will indicate the
following:
Looking for 960L...
6-30