User's Manual

AKG SPC 4 18/20
Green The antenna combiner is
ON and connected to an
antenna approved by
AKG. The operating
temperature is within the
safe range.
Orange The operating
temperature has reached
a critical level.
Switch power to the
antenna combiner OFF
and make sure that the
ventilation grill is not
obstructed.
The antenna combiner
has overheated.
Switch power to the
antenna combiner OFF
IMMEDIATELY and make
sure that the ventilation
grill is not obstructed
and the power supply is
connected correctly.
Red
An antenna that is not
approved by AKG is
connected to the
antenna combiner.
Switch power to the
antenna combiner OFF
IMMEDIATELY and
connect an SRA 2 W or
RA 4000 W antenna.
Power to the antenna
combiner is OFF.
Switch power to the
antenna combiner ON.
The antenna combiner is
not connected to a
power supply.
Connect the antenna
combiner to your power
supply.
The DC cable(s) is/are
not connected or
defective.
Connect or replace the
DC cable(s).
Dark
The AC adapter or PSU
4000 is defective.
Contact your nearest
AKG Service Center.
5 Cleaning
1. Disconnect the unit from power.
2. To clean the receiver surfaces, use a soft cloth moistened (not soaked!)
with water.
Important!
• Never use caustic or scouring cleaners or cleaning agents
containing alcohol or solvents since these may damage the enamel
and plastic parts.