11
LED status
All LEDs are green
During power up all LEDs stay red 
for an extended time
During power up or normal 
operation, one or more LEDs are 
flashing green, with the remaining 
LEDs solid red
During power up or normal 
operation, one or more LEDs are 
flashing green, with the remaining 
LEDs NOT solid red
During power up or normal 
operation, one or more LEDs are 
flashing red, with the remaining 
LEDs solid red
During power up or normal 
operation, one or more LEDs are 
flashing red, with the remaining 
LEDs NOT solid red
During power up or normal 
operation, one or more LEDs are 
flashing amber
During power up or normal 
operation, one LED is flashing 
amber, with the remaining LEDs 
solid red
During power up or normal 
operation, all the LEDs are flashing 
amber
During normal operation, all the 
LEDs  are solid red
During power up or normal 
operation, one or more LEDs are 
flashing amber, with the remaining 
LEDs flashing green
During power up or normal 
operation, one or more LEDs are 
flashing amber, with the remaining 
LEDs flashing red
FAULT STATUS INDICATORS
The LED patterns below indicate the following fault conditions:
Description
This is the normal operating state of the 
amplifier.
The amplifier is waiting for the DC offset fault 
lines to clear. A DC offset fault can occur if an 
excessive DC voltage is present at the output of 
the pre-amp feeding the P7. Normal operation 
resumes if the lines clear in 20 seconds.
The DC fault cannot be cleared. The channels 
with the flashing green LEDs represent the 
amplifier modules that have a DC offset fault. 
Alternatlively, a DC offset fault has reoccurred 
on the same channel within 12 seconds of a 
previous DC offset fault clearance.
The amplifier is attempting to clear a DC offset 
fault on a channel with the flashing green LED.
A short circuit fault cannot be cleared. The 
flashing red LEDs represent the amplifier 
modules with a short circuit fault. Alternatlively, 
a short circuit fault has reoccurred on the same 
channel within 12 seconds of a previous short 
circuit fault clearance.
The amplifier is attempting to clear a short 
circuit fault on a channel with the flashing red 
LED.
The amplifier is attempting to clear an over 
temperature fault on a channel with the flashing 
amber LED.
An over temperature fault has reoccurred 
on the same channel within 12 seconds of a 
previous over temperature fault clearance.The 
flashing amber LEDs represent the amplifier 
modules with an over temperature fault.
The amplifier is attempting to clear an over 
temperature fault on more than one channel, or 
the power transformers have overheated.
An over temperature fault has reoccurred 
on one or more channels, or the power 
transformers have overheated within 12 
seconds of a previous over temperature fault 
clearance.
A DC offset fault occurred on one or more 
channels while attempting to clear a multiple 
over temperature fault.
A short circuit fault occurred on one or more 
channels while attempting to clear a multiple 
over temperature fault.
Amplifier action
None
To verify excessive DC offset voltage, remove 
the interconnect leads (with the P7 switchd 
off) and turn on the P7. The fault should have 
cleared.
The amplifier shuts down. The power switch 
must be cycled to reset the amplifier (cycling 
the trigger does NOT reset the amplifier).
The amplifer mutes the channel with the fault 
and its paired channel. The amplifier stays in 
this state for up to two seconds or until the 
fault clears (whichever is sooner).
The amplifier shuts down. The power switch 
must be cycled to reset the amplifier (cycling 
the trigger resets the amplifier).
The amplifer mutes the channel with the fault 
and its paired channel. The amplifier stays in 
this state for up to half-a-second or until the 
fault clears (whichever is sooner).
The amplifer mutes the channel with the fault 
and its paired channel and the fan is set to 
maximum speed. The amplifier stays in this 
state until the channel has cooled.
The amplifier shuts down. The power switch 
must be cycled to reset the amplifier (cycling 
the trigger resets the amplifier).
The amplifer mutes all channels and the fan is 
set to maximum speed. The amplifier stays in 
this state until all channels have cooled, or the 
transformer has cooled.
The amplifier shuts down. The power switch 
must be cycled to reset the amplifier (cycling 
the trigger resets the amplifier).
The amplifier shuts down. The power switch 
must be cycled to reset the amplifier (cycling 
the trigger does NOT reset the amplifier).
The amplifier shuts down. The power switch 
must be cycled to reset the amplifier (cycling 
the trigger resets the amplifier).