ALLEN & HEATH GL 2000, Руководство по обслуживанию

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ALLEN & HEATH
Section C - 2
L2dSM2
Check that the voltage indicated in the fuseholder window is the same
as the mains supply in your area.
F
F
AC mains supply = 100 to 110 V.AC 100 T 1.6A 20mm fuse
AC mains supply = 110 to 125 V.AC 120 T 1.6A 20mm fuse
AC mains supply = 210 to 230 V.AC 230 T 630mA 20mm fuse
AC mains supply = 235 to 260 V.AC 240 T 630mA 20mm fuse
To avoid the risk of fire replace the fuse only with the correct type and
value as specified on the unit.
F
Always switch the unit off before connecting or disconnecting the
console power cable.
TECHNICAL DESCRIPTION
The power supply for the GL2000 range is internal to the console and is mounted on a steel sub-chassis.
INSTALLATION
An important consideration when positioning the console is the need for natural convection of air flow over the whole
unit. Good ventilation, in the floor and back of the console, will ensure a path for continuous air flow. Pay particular
attention to the ventilation around the power supply unit which is mounted off the rear connector panel. The
GL2000
can be operated as a free standing unit without requiring any special cooling arrangement, but should not be covered
in any way. Always stand the unit on a firm flat surface well away from any soft furnishings.
THE POWER SUPPLY AND CONSOLE EARTHING
The GL2000 power supply is a linear power supply which, like other linear supplies, produces DC voltages by
rectifying, smoothing and regulating AC voltages from the secondary windings of a mains transformer. The console
connects directly to the local AC mains supply and provides the regulated DC operating voltages required by the
GL2000 console. The console chassis is always connected to mains earth. Audio 0V connects to the console chassis
internally. Should problems be encountered with ground loops operate the audio ground lift switches on other
equipment connected to the console or disconnect the cable screens at one end. Refer to the section on 'EARTHING'
in the User Guide. This is to avoid earth loops in situations where multiple earth paths are present.
THE CHASSIS METALWORK IS ALWAYS CONNECTED TO MAINS EARTH VIA THE EARTH WIRE IN
THE MAINS PLUG. DO NOT REMOVE THE EARTH WIRE CONNECTION IN THE MAINS PLUG !
CONNECTING AC MAINS TO THE CONSOLE
Mains input to the GL2000 is via a standard 3 pin IEC mains input connector. A mains cable with moulded mains plug
suitable for the local supply is supplied.