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T
ROUBLESHOOTING
Troubleshooting Index
If you are experience problems while operating the Q20, please use the following
table to locate possible causes and solutions before contacting Alesis customer
service for assistance.
Symptom
The display does not light
when the ON/OFF switch
is turned on.
Display is blank.
No audio is heard.
Effect output level is low
on a single Program.
Clicks are heard in the
audio using digital I/O.
Distortion (red LEDs flash
before meter is full).
Q20 Reference Manual
C
8
HAPTER
Cause
No power.
Display contrast is set
either too high or low.
The digital input is
selected.
Bypass is on with no
direct routings set.
Bypass is on with Global
Direct Signal Mute On.
Bypass is on, with Direct
Level From Input set to
NONE.
Program being edited has
no input or output
routings.
Master Effects Level is
below 100%.
Digital clock conflict.
ADAT clock set
improperly.
Internal DSP is clipping.
Troubleshooting - Chapter 8
Solution
Check that the power
cable is plugged in
properly.
Adjust the display
contrast. Press [GLOBAL],
turn [VALUE/ENTER].
Press [GLOBAL], press [PAGE
>] four ti mes, then turn
[VALUE/ ENTER] knob
cou nterclockwi se.
Select another program
with routings.
Go to GLOBAL page 9 and
set it to OFF.
Go to MIX and set Direct
Level to 100% .
Go to ROUTING page 3
(Delete Route) and check
the existence of routings
for each block and the
L/R OUT by rotating the
[VALUE] control to see all
inputs to that block.
Press MIX and raise the
level.
Provide a master 48 kHz
clock or repatch the
system. Set the receiving
unitÕs clock to external.
Hold SET LOCATE and
press DIGITAL IN until
the display says "DIG".
Lower the LEVEL of any
rate feeding a block that
is overloading.
115
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