d&b audiotechnik D12, Hardware Manual

Page: 5 / 28

1. Safety precautions
1.1. Information regarding use of the D12 amplifier
WARNING! The following information is intended to prevent fires
and possible electric shocks:
The D12 is a protective class 1 unit. Make sure that the earth (ground)
contact is attached when the unit is in operation. A missing earth
(ground) contact may lead to dangerous voltages in the housing and
controls.
Never connect an amplifier output pin to any other input or output
connector pin or earth (ground). This might damage the unit or lead to
electric shock.
Lay all cables connected to the unit in such a way that they cannot be
crushed by vehicles or other equipment and that no one can step on
them.
Keep dust, moisture, water or other liquids well away from the unit. Do
not place any kind of object filled with liquids (e.g. drinks) on the unit.
Please ensure the mains connector is accessible at any time to
disconnect the unit in case of malfunction or danger.
Never operate the unit when it is open. Always disconnect the mains
power supply when replacing a defective fuse. Only use the type of
fuse listed in the specifications.
Only carry out work specified in this manual and always disconnect the
mains power supply. Even if the mains power supply is disconnected
electrical charge remains to several electronic components. After
15 min. the respective components will be discharged.
All other work should be performed by trained service staff, especially
in the following cases:
- Mains power cable, socket or plug has been damaged
- Objects or liquids have entered the unit
- The unit is not operating normally
- The unit was dropped or the housing is damaged
IMPORTANT! The device complies with the electromagnetic compatibility requirements
of EN 55103 (product family standard for audio, video, audio-visual
and entertainment lighting control apparatus for professional use) for
the environments E1 (residential), E2 (business and commercial), E3
(outdoor use in urban areas) and E4 (outdoor use in rural areas).
Acoustic interference and malfunctions may occur if the unit is operated
in the immediate vicinity of high-frequency transmitters (e.g. wireless
microphones, mobile phones, etc.). Damage to the unit is unlikely, but
cannot be excluded. To meet the EMC requirements, use only shielded
cables with properly connected plugs for all input signal terminals.
D12 Amplifier, Hardware manual ( 4.7 EN) Safety precautions - 1/Page 5 of 28