Operation; Front Panel Features And Operation - Extron electronics XPA Ultra Series User Manual

Operation

This section discusses how to operate the XPA Ultra Series half-rack audio power amplifiers.
Topics covered include:
•
•
•

Front Panel Features and Operation

A
B
Figure 14.
NOTE: XPA U 358 front panel displayed above, other XPA U Series front panels function
A
B
Front Panel Features and Operation
Rear Panel Features and Operation
Troubleshooting
C
OVER 1 2 3 4 5 6 7 8
TEMP
e
A B D
Power Indicator LED
Over Temp Indicator LED
XPA Ultra Series Front Panel
identically.
Power Indicator LED — This LED lights:
Green when the amplifier is receiving full power.
•
Amber when the amplifier is in standby mode. Standby mode turns off all outputs
•
from the amplifier, although the amplifier is still receiving power.
NOTE: Power indicator LED may remain lit amber for a time after the removal of
AC power. This is normal.
Over Temp Indicator LED — This LED lights red when the amplifier exceeds the
recommended operating temperature for optimal lifetime. The LED will turn off after the
amplifier has sufficiently cooled down.
Should the LED light, check the following:
Verify that the placement of the amplifier allows for adequate ventilation and airflow.
•
Avoid placing other equipment on top of or below the amplifier.
•
Verify that the operating temperature is within the specified range (see
•
Mounting Ventilation Recommendations
LIMITER/PROTECT
SIGNAL
Limiter/Protect Indicator LEDs
C
Signal Indicator LEDs
D
on page 10).
XPA Ultra Series Power Amplifiers • Operation
POWER AMPLIFIERS
XPA U 358 SERIES
Rack
15