20
SURFACE CLEANING
The cabinet outside is coated with a special paint that is resistant to spotting. However, from time to time you
may wish to clean the surface of your Block Audio equipment to remove dust, or any material build up from
the atmosphere or from common use. Therefore, we recommend only gently clean the dust off, eventually
wiping the water moistening microfiber cleaning cloth while observing the following guidelines:
•
As a safety precaution, always unplug the unit from the wall outlet before cleaning
•
Always use a cloth that is soft and clean
•
Never use abrasives or polishing compounds anywhere on the unit
•
Never apply liquid directly to the surface of the unit
•
Use the cloth dry or with mild surface cleaners of either liquid or foaming type
•
Apply only small amounts of cleaner to the cloth
•
DO NOT rub the surface but wipe clean only. Excessive rubbing may wear the coating or screen printed
text.
TROUBLESHOOTING
PROBLEM
POSSIBLE CAUSE
ACTION
Preamplifier does not start up and
front status LED is flashing red.
One of the mains cable is not
properly connected but AC mains
supply is required due to battery
charging or AC Mains operation.
Check AC mains cables connection.
Preamplifier does not start, the
front status LED is flashing red and
DC Voltage Detection warning is
displayed.
The source device output signal
contents too high DC voltage part.
Defective source device.
Check/change the signal source
device.
Hum (50/100 Hz) comes from the
speakers.
Ground loop between the individual
components.
See capture GND LIFT switch.
No reaction on the On/Off button. AC Mains cable is not properly
connected.
Check AC mains cable connection.
Home circuit breaker is tripped.
Check home circuit breaker.
Wrong or missing Mains voltage.
Have line voltage checked.
A Mains/Line fuse placed inside of
the Power Block can be blown.
Contact your Block Audio dealer.
Fuse failure may indicate a severe
problem.
Front status LED lights white or
orange, but no sound on speakers
and headphones.
No signal out to preamplifier.
Check audio signal source and
connections to the Line Block.
Wrong input selected.
Check input connection/selection
on the Line Block.
Front status LED lights white or
orange, but no sound on speakers.
Headphones, or stereo jack adapter
is connected.
Unplug the headphones, or adapter,
or change POWER AMP. / OUTPUT
mode in the Setup Menu Base-Level
to ON.
The POWER AMP. / OUTPUT mode
is OFF in the Setup Menu Base-
Level.
Change POWER AMP. / OUTPUT
mode in the Setup Menu Base-Level
to AUTO or ON.
Summary of Contents for LINE BLOCK
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