Engl Steve Morse Signature 100 Betreibershandbuch PDF herunterladen (Seite 28)

the Threshold (48) knob set to a high value? Deactivate the (17)

for a quick check.

-> Are the active Master knob and the Gain and Volume knobs set to a value

greater than 0? If any of these knobs is set to 0, no signal is routed

to the amp's outputs.

-> Did you select a MIDI preset programmed with enabled?

The front panel Amp Mute LED (36) lights up to indicate is active.

-> Did you send via MIDI foot board a MIDI controller #7 or #28 command with

a value less than or equal to 5? This activates A , thereby silencing

the amp. The front panel Amp Mute LED (36) lights up to

indicate is active.

-> You may be looking at a faulty tube or another defect. In this case,

be sure to take the preamp to an authorized, professional service center.

-> Is the Ground Lift switch (41) set to Ground? If you are operating the

amp without other grounded gear (power amp, effect devices) connected,

this switch must be set to the Ground position; otherwise, it's goodbye silence,

hello humming! In this case, the amp will hum even without a guitar connected.

-> The amp and mains grounds are not connected properly or are altogether

disconnected. Have an experienced specialist check this.

-> Cords connected to the input or effect loops may not be shielded properly.

Replace them to check if this is indeed the case.

-> The amp or speaker cords may be picking up interference from powerful

magnetic fields (for example, of nearby power transformers or electrical motors).

Reposition the amp and connector cables.

-> The amp or speaker cords may be picking up radio signals, for example,

from activated mobile telephones or powerful local transmitting stations nearby.

Switch off mobile phones while troubleshooting noise problems.

-> The given power tube is defective and must be replaced if the electronic circuit

breaker continues to trip after several attempts to reset the Tube Monitoring

System by flipping the Standby switch off and back on again.

-> The amp has been overloaded, perhaps by excessive volume levels,

mains over-voltage, or the wrong output impedance (the impedance setting

does not match the connected speaker's impedance).

Noise Gate

Amp Mute

mp Mute

Amp Mute

The speaker is emitting loud humming noises:

The electronic power amp protection circuit has tripped:

-> Note that feeding the amp's signal via the Out (55) or Line Out (56) jacks to a

tuner or ancillary power amp may create a ground loop. Set the Ground Lift (41)

switch to the position.Ground Floated

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Engl Steve Morse Signature 100 Betreibershandbuch Seite 28