TOA a-9060dh User Manual
14
11. PROTECTION OPERATION LIST
Failure
Protection
Operation Indicator
Remedy
Recovery
Overcurrent due
to overload
to overload
Current limiter activated
when impedance drops
below the specified
value.
when impedance drops
below the specified
value.
Peak indicator lights. Remove overload.
Connecting a correct load
automatically restores
normal operation.
automatically restores
normal operation.
Short circuit
Current limiter activated.
Load is disconnected.
Load is disconnected.
Protection indicator
lights.
lights.
Check speakers
and lines for short
circuit.
and lines for short
circuit.
Temperature rise
at power amp.
heat sink
(over 110°C or 230°F)
at power amp.
heat sink
(over 110°C or 230°F)
Load disconnected.
Protection indicator
lights.
lights.
Temperature rise
inside the unit
(over 80°C or 176°F)
inside the unit
(over 80°C or 176°F)
Built-in amplifier unit
that caused the failure
halted.
that caused the failure
halted.
Four indicators of
the corresponding
channel extinguish.
the corresponding
channel extinguish.
Check the unit for
correct ventilation
and overload.
correct ventilation
and overload.
Operation automatically
returns to normal when
the temperature decreases.
returns to normal when
the temperature decreases.
Abnormal DC
voltage output
voltage output
Load disconnected.
Protection indicator
lights.
lights.
Contact the TOA dealer where the unit was
purchased.
purchased.
Turn off this unit's Power
switch. Correct the load,
then turn on the power.
switch. Correct the load,
then turn on the power.
12. TAMPER-PROOF CAP ATTACHMENT
To protect the input level control from accidental operation, it is recommended to replace the control knob with
the supplied tamper-proof cap as illustrated.
the supplied tamper-proof cap as illustrated.
Input level control
Tamper-proof cap (accessory)