Information subject to change
97-8004167 07-14-17
7224 & 7226 OPERATOR’S MANUAL –
SECTION 6
34
One or More Amps in System
Other Amps in System
State of Operation
Action Needed to
Clear Fault
Condition and Re-
turn to Run Mode
Main Status
Indicators
Fault Status
Indicators
Main Status
Indicators
Fault Status
Indicators
Run
Ready
Standby
Stop
Fault
Over Load
Over Temp
Over Voltage
Run
Ready
Standby
Stop
Fault
Over Load
Over Temp
Over Voltage
Over Temp status:
Each amplifier in the
system monitors the
temperature inside the
high-voltage transformers,
low-voltage transformer
and in the output stage
heat sinks. The Over
Temp indicator will light
and the system will be
placed in Standby mode
when the temperature
sensors detect a condi-
tion that would damage
the amplifier system. If
the Over Temp pulse is
extremely short, as in the
case of defective wiring or
switches, the Over Temp
LED may be lit too briefly
to observe.
To reset after an Over
Temp fault has occurred,
make sure the ampli-
fier fans in all amplifiers
are running, and then
remove the input signal
from the system. Allow
the fans to run for about
5 minutes. Then push
and hold the Reset but-
ton on any amplifier dis
-
playing the Over Temp
status until the Standby
LED turns off, then
release the Reset button
to return the system to
Run mode. Please see
the
“Troubleshooting”
section for information
on correcting the cause
of an Over Temp fault
condition.
Run
Ready
Standby
Stop
Fault
Over Load
Over Temp
Over Voltage
Run
Ready
Standby
Stop
Fault
Over Load
Over Temp
Over Voltage
Over Voltage status:
This indicates that the
AC mains voltage is more
than +10% of nominal. All
amplifiers in the system
will be forced to Standby
when an Over Voltage
condition occurs. When
the Over Voltage condi
-
tion is cleared, the system
will automatically return to
Run mode.
To clear an Over Voltage
fault condition, the AC
mains must be brought
down to the nominal
value. If the system does
not return to Run mode
when the Over Voltage
condition has cleared,
one or more amplifiers
may require servicing.
Please see the
“Trou
-
bleshooting”
section for
more information.
