Arcam FMJ P7 - Manual (Page 11)

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FAULT STATUS INDICATORS
The LED patterns below indicate the following fault conditions:
LED status Description Amplifier action
All LEDs are green This is the normal operating state of the amplifier. None
During power up all LEDs stay red
for an extended time
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.
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.
During power up or normal
operation, one or more LEDs are
flashing green, with the remaining
LEDs solid red
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 shuts down. The power switch must be
cycled to reset the amplifier (cycling the trigger does
NOT reset the amplifier).
During power up or normal
operation, one or more LEDs are
flashing green, with the remaining
LEDs NOT solid red
The amplifier is attempting to clear a DC offset fault
on a channel with the flashing green LED.
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).
During power up or normal
operation, one or more LEDs are
flashing red, with the remaining
LEDs solid red
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 shuts down. The power switch must be
cycled to reset the amplifier (cycling the trigger resets
the amplifier).
During power up or normal
operation, one or more LEDs are
flashing red, with the remaining LEDs
NOT solid red
The amplifier is attempting to clear a short circuit
fault on a channel with the flashing red LED.
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).
During power up or normal
operation, one or more LEDs are
flashing amber
The amplifier is attempting to clear an over
temperature fault on a channel with the flashing
amber LED.
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.
During power up or normal
operation, one LED is flashing
amber, with the remaining LEDs
solid red
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 shuts down. The power switch must be
cycled to reset the amplifier (cycling the trigger resets
the amplifier).
During power up or normal
operation, all the LEDs are flashing
amber
The amplifier is attempting to clear an over
temperature fault on more than one channel, or the
power transformers have overheated.
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.
During normal operation, all the
LEDs are solid red
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.
The amplifier shuts down. The power switch must be
cycled to reset the amplifier (cycling the trigger resets
the amplifier).
During power up or normal
operation, one or more LEDs are
flashing amber, with the remaining
LEDs flashing green
A DC offset fault occurred on one or more
channels while attempting to clear a multiple over
temperature fault.
The amplifier shuts down. The power switch must be
cycled to reset the amplifier (cycling the trigger does
NOT reset the amplifier).
During power up or normal
operation, one or more LEDs are
flashing amber, with the remaining
LEDs flashing red
A short circuit fault occurred on one or more
channels while attempting to clear a multiple over
temperature fault.
The amplifier shuts down. The power switch must be
cycled to reset the amplifier (cycling the trigger resets
the amplifier).