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	The amplifier is waiting for the DC offset fault lines	To verify excessive DC offset voltage, remove the
for an extended time	to clear. A DC offset fault can occur if an excessive	interconnect leads (with the P7 switchd off) and turn
	DC voltage is present at the output of the pre-amp	on the P7.The fault should have cleared.
	feeding the P7. Normal operation resumes if the
	lines clear in 20 seconds.
During power up or normal	The DC fault cannot be cleared. The channels with	The amplifier shuts down.The power switch must be
operation, one or more LEDs are	the flashing green LEDs represent the amplifier	cycled to reset the amplifier (cycling the trigger does
flashing green, with the remaining	modules that have a DC offset fault. Alternatlively, a	NOT reset the amplifier).
LEDs solid red	DC offset fault has reoccurred on the same channel
	within 12 seconds of a previous DC offset fault
	clearance.
During power up or normal	The amplifier is attempting to clear a DC offset fault	The amplifer mutes the channel with the fault and its
operation, one or more LEDs are	on a channel with the flashing green LED.	paired channel.The amplifier stays in this state for up
flashing green, with the remaining		to two seconds or until the fault clears (whichever is
LEDs NOT solid red		sooner).
During power up or normal	A short circuit fault cannot be cleared. The flashing	The amplifier shuts down.The power switch must be
operation, one or more LEDs are	red LEDs represent the amplifier modules with a	cycled to reset the amplifier (cycling the trigger resets
flashing red, with the remaining	short circuit fault. Alternatlively, a short circuit fault	the amplifier).
LEDs solid red	has reoccurred on the same channel within 12
	seconds of a previous short circuit fault clearance.
During power up or normal	The amplifier is attempting to clear a short circuit	The amplifer mutes the channel with the fault and its
operation, one or more LEDs are	fault on a channel with the flashing red LED.	paired channel.The amplifier stays in this state for up
flashing red, with the remaining LEDs		to half-a-second or until the fault clears (whichever
NOT solid red		is sooner).
During power up or normal	The amplifier is attempting to clear an over	The amplifer mutes the channel with the fault and its
operation, one or more LEDs are	temperature fault on a channel with the flashing	paired channel and the fan is set to maximum speed.
flashing amber	amber LED.	The amplifier stays in this state until the channel has
		cooled.
During power up or normal	An over temperature fault has reoccurred on the	The amplifier shuts down.The power switch must be
operation, one LED is flashing	same channel within 12 seconds of a previous over	cycled to reset the amplifier (cycling the trigger resets
amber, with the remaining LEDs	temperature fault clearance.The flashing amber	the amplifier).
solid red	LEDs represent the amplifier modules with an over
	temperature fault.
During power up or normal	The amplifier is attempting to clear an over	The amplifer mutes all channels and the fan is set
operation, all the LEDs are flashing	temperature fault on more than one channel, or the	to maximum speed. The amplifier stays in this state
amber	power transformers have overheated.	until all channels have cooled, or the transformer has
		cooled.
During normal operation, all the	An over temperature fault has reoccurred on one	The amplifier shuts down.The power switch must be
LEDs are solid red	or more channels, or the power transformers have	cycled to reset the amplifier (cycling the trigger resets
	overheated within 12 seconds of a previous over	the amplifier).
	temperature fault clearance.
During power up or normal	A DC offset fault occurred on one or more	The amplifier shuts down.The power switch must be
operation, one or more LEDs are	channels while attempting to clear a multiple over	cycled to reset the amplifier (cycling the trigger does
flashing amber, with the remaining	temperature fault.	NOT reset the amplifier).
LEDs flashing green
During power up or normal	A short circuit fault occurred on one or more	The amplifier shuts down.The power switch must be
operation, one or more LEDs are	channels while attempting to clear a multiple over	cycled to reset the amplifier (cycling the trigger resets
flashing amber, with the remaining	temperature fault.	the amplifier).
LEDs flashing red

English

Multichannel Power Amplifier specifications

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Arcam Multichannel Power Amplifier manual Fault Status Indicators

Models: Multichannel Power Amplifier

FAULT STATUS INDICATORS

LED status

Description

Amplifier action

None

for an extended time

lines clear in 20 seconds.

During power up or normal

operation, one or more LEDs are

LEDs solid red

clearance.

During power up or normal

LEDs NOT solid red

sooner).

During power up or normal

operation, one LED is flashing

During normal operation, all the

LEDs are solid red

Multichannel Power Amplifier specifications