Appendix 4: Troubleshooting - Alesis AI-2 Reference Manual

8.3 APPENDIX 4: TROUBLESHOOTING

Symptom
Front panel display does not light.
The AI -2 fails to ID all the connected
ADATs.
Editor does not control AI-2.
Control communications failures.
ADATs stop and tapes disengage
AI-2 switches to chase operation
Solution
The AI -2 power supply is not connected or
is faulty. Check the 2.5 mm power
connection and make sure that the wall
transformer is plugged in properly. If this
fails to correct the problem, try another
power supply.
Check the sync in to sync out cable
connections, if necessary try swapping
cables to eliminate the problem. Make sure
that all ADAT transports are powered on.
Check that SONY is selected in the control
menu and that the AI -2 emulation setting is
correct. If the control LED is off or flashing
check the cable between the AI-2 and the
editor port. Make sure that the correct
driver is selected at the editor, if necessary
reinitialize the editor.
Communications failures are normally
caused by bad or incorrectly wired cables,
or because control software or drivers of an
incompatible type are being used. If the
AI -2 control or MMC LEDs are flashing then
make sure that the cables are correctly
wired and connected. Check that the
controlling device is properly configured to
operate with the AI-2.
ADAT transports require a continuous
sample clock signal otherwise they will go
into stop and the tapes disengage. Check
that the sync cable to the ADATs is properly
installed. If external word clock has been
selected as the AI-2 reference, check that
the cables are properly installed and that
the word clock signal is not being
interupted.
When the AI-2 control source is set to Auto
it will automatically switch to reader chase
operaton if editor or synchronizer
communication is lost. If communication is
sporadic or intermittant then do not use auto
control selection as this may cause the AI-2
to time out and switch control type. Chose
one of the named settings in the control
menu.
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