10
3.3.2 CLASSIC
300
TROUBLESHOOTING
Error: the amplifier doesn’t start-up Warning: the amplifier keeps functioning Message: operating messages
Display Message
Type
Explanation
Power supply failure!
Error
The power supply has failed. Contact an authorized technician for repair.
Amplifier failure!
Error
The power amplifier has failed. Contact an authorized technician for repair.
Cabinet not connected!
Error (until you connect a
cabinet)
No cabinet is connected to your amplifier.
Cabinet impedance/short!
Error (until you connect correctly
to a suitable cabinet)
The impedance of your cabinet/s is too low, or there is a short circuit. Check your
connection and/or your cabinet/s.
Temp too high!
Error (until the temperature
decreases)
The temperature inside the amplifier has reached an unsafe level.
Make sure the amplifier is properly ventilated.
V(#) tube failure!
Warning
One or more tubes are not working correctly or have failed.
You should have the tube/s replaced by an authorized technician as soon as possible.
Main voltage too low!
Warning
Main power supply voltage is below the nominal value by 10% or more.
Main voltage too high!
Warning
Main power supply voltage is above the nominal value by 10% or more.
Markbass
Classic 300
Message
Startup message
Amp Management System V#.#
Message
Software version. This message appears during startup.
Tube heating
Message
Duration: 32 seconds. This message appears during startup. A progress bar shows the
time remaining until the amp is ready to use.
Long Life – biasing..###
Message
Duration: approximately 10 seconds. This message appears during the power tube biasing
phase, when Long Life mode has been selected.
.
High Fidelity – biasing..###
Message
Duration: approximately 10 seconds. This message appears during the power tube biasing
phase, when High Fidelity mode has been selected.
Ready
Message
This message appears after the biasing phase, when the amplifier is working properly and
ready for use.
Standby
Message
You have selected standby mode. Press standby again when you’re ready to use the amp.
Mute
Message
You have selected mute mode. Use the footswitch to deactivate mute mode when you’re
ready to use the amp.
