248 ESI Operation Manual
Troubleshooting
This section explains some of the problems you might possibly encoun-
ter while working with the ESI. Before assuming that your ESI is faulty,
check the following list which details the corrective action you can take
yourself without having to call a service center. If you have any doubts
or questions, get in touch with your nearest E-mu dealer or call the E-
mu customer service department at (408) 438-1921, between the hours
of 8:30 am and 5:30 pm Monday through Friday.
The ESI seems dead
If the ESI seems dead, first disconnect any external SCSI devices and try
again.
Problem: The unit is completely dead. No lights no sound.
Cause: The power supply may be damaged.
Solution: Consult your dealer or authorized E-mu service center.
Audio Problems
Problem: The ESI powers up normally, but does not make any
sound.
Cause: Proper audio connections may not have been made.
Solution: Try listening directly to the stereo output using head-
phones to verify that the ESI is at fault. Check that
proper audio connections have been made.
Problem: The ESI powers up normally, but does not make any
sound.
Cause: The front panel volume control may need recalibration.
Solution: Recalibrate the volume control using the Recalibrate
function located under Special in the Master/Global
module.
Problem: The ESI powers up normally, but does not make any
sound.
Cause: Proper MIDI connections may not have been made.
Solution: Try using the trigger buttons to play the ESI. Check
MIDI activity LED. Verify that proper MIDI connections
have been made.
Problem: The digital audio output level is too low when a single
channel is played.
Cause: Because of the nature of sampling instruments, each
additional channel played adds +3 dB to the headroom
requirement. A single channel on the ESI comes out
about -6 dB down.
Solution: Make sure the Master Volume control is at maximum.
Set the headroom adjustment (Master/Global, Special, 3)
to 0 dB. All volume adjustments in the ESI affect the
digital output level.
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