Troubleshooting
* Some features that may be controlled remotely using a Z-9 or Z-4 footswitch
fail to respond when you change settings:
* The amp fails to respond when you try to control switching functions remotely
via the Z-9 footboard.
* The amp fails to respond when you try to control switching functions remotely
using a footboard such as the Z-4 or a MIDI switcher such as the ENGL Z-11.
* 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, there is a defect in the control system,
probably on the logic board holding the microcontroller or merely a faulty
contact on one of the four stereo footswitch jacks (21, 22, 23, 24). In this case,
consult an authorized service center or a professional specialist.
-> Is the Z-9 footboard connected to the S.A.C. Port (21)?
-> Is the cord you are using stereo, intact, and wired properly?
(Refer to page 22 for pin assignments.)
-> Are the footboards or switching loops connected to the corresponding
footswitch jacks (22, 23, 24)?
-> Are the cords you are using stereo, intact, and wired properly?
(Refer to page 22 for pin assignments.)
-> If you are using footswitches other than an ENGL Z-4 or Z-11, are the switches
or relays inside the boards or switching loop systems off / on Single Pole Single
Throw (SPST) switches? In other words, do these switches continuously connect
to GND when you wish to activate the given function? If you're unsure about
the answers to these questions, consult an authorized service center or a
professional specialist.
-> Is at least one speaker connected to the speaker outputs 4 ohms, 8 ohms
or 16 ohms (35, 36, 37, 38, 39) ?
-> Is the power amp activated (Standby switch to ON) ?
-> 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 Noise Gate activated in one of the Lead channels and the Threshold (29)
knob set to a high value? Deactivate the Noise Gate (29) 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.
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