Operator`s manual

Indication: LED flashes in 2 short bursts;

What to do: Activate and deactivate ;

7. Power Tube Monitor: A problem or overload in power tube V3

Indication: LED flashes in 3 short bursts;

What to do: Activate and deactivate further information on page

8. Power Tube Monitor: A problem or overload in power tube V4;

Indication: LED flashes in 4 short bursts;

What to do: Activate and deactivate ;

Standby

Standby;

Standby

further information on page

28.

Troubleshooting

Programmable features fail to respond when you change settings:

The amp fails to respond when you try to switch presets via MIDI foot board.

The amp is not providing an output signal / no sound is emanating from the

speaker.

-> Powerful static charges, strong radio signals or mains voltage spikes can affect

microcontroller-driven systems, setting them to an undefined status (commonly

called a hung chip). In this event, your only choice is to reset the system.

Simply switch the amp off and on again.

-> If a reset doesn't solve the problem that is, the chip is still hung there

is a defect in the control system (presumably on the logic board holding

the microcontroller). In this case, consult an authorized service center

or a professional specialist.

-> Is the MIDI foot board connected to the MIDI In port (43)?

-> Is the MIDI cord you are using intact and wired properly?

(Refer to page 31 for pin assignments.)

-> Is the amp set to the MIDI channel over which the MIDI foot board is sending

program change commands? You can set the encoding button (45) to OMNI

reception to check if the preamp is actually receiving data.

-> Is another foot board (the ENGL Z-9 or a two-way footswitch) connected and

therefore blocking MIDI reception?

-> Is at least one speaker connected to the speaker outputs

(57, 58) (59, 60) or (61)?

-> Is the power amp activated (Standby switch to ON)?

Standby / power amp off => The Amp Mute LED (36) on the front panel

indicates the Amp Mute status.

-> Are all cords (guitar, effect, and speaker) connected properly and are they

functional?

-> Unplug connected effectors and see if the preamp works fine without these

peripheral devices.

-> Is the activated in one of the channels or and

4 Ohms

, 8 Ohms 16 Ohms

Noise Gate CH2 CH3