Troubleshooting - Lehmannaudio Black Cube Bedienungsanleitung

46 Black Cube/Black Cube SE

Troubleshooting

EN
Fault Cause
LED indicator is The mains cable is not
not lit.
plugged in at the power
outlet.
The power supply is not
connected with the device.
No signal. The mains cable is not
plugged in at the power
outlet.
The power supply is not
connected with the device.
Input and output are
not wired correctly on
the Black Cube/Black
Cube SE.
A wrong input channel
has been selected on the
following amplifier.
Signal on one The DIP switches are
channel only. unevenly set or there
is only one gain jumper
plugged in.
Solution
Insert the mains cable into the
power outlet.
Connect the power supply with
the device.
Insert the mains cable into the
power outlet.
Connect the power supply with
the device.
Check if the cables coming from
the turntable are connected to
the input and also if those going
out to the amp are connected
to the output of the Black
Cube/Black Cube SE. Reconnect
them correctly if necessary.
Select the appropriate input
channel.
Check the positions of both
DIP switches or gain jumpers.
Make sure that the settings are
equal on both channels.
Signal on one One connection lead
channel only. has a loose contact, is
not well plugged in or
defective.
The subsequent input
stage is defective.
Left and right
The channels were re-
channels are versed in the connection
reversed. lead.
Signal level is too Non-optimal matching
low. between pickup cartridge
and Black Cube/Black
Cube SE.
The selected input
impedance on the Black
Cube/Black Cube SE is
too low.
Black Cube/Black Cube SE 47
Check the connection leads
EN
for slack joints, loose pushfits
or defects and, if necessary,
replace them. Potential causes:
system cable (headshell),
tonearm cable from turntable
to Black Cube/Black Cube SE
and line cable from Black Cube/
Black Cube SE to the following
input.
Check by connecting to differ-
ent line inputs.
Check the connection leads and
swap the channels here, if nec-
essary. Potential causes: system
cable (headshell), tonearm cable
from turntable to Black Cube/
Black Cube SE and line cable
from Black Cube/Black Cube SE
to the following input.
Increase the gain factor ac-
cording to this user manual
by means of the DIP switches
located on the bottom side
of the Black Cube/Black Cube
SE and/or enable the gain
jumpers.
Select a resistance value for the
input impedance which is at
least 10 times greater than the
pickup's system impedance.