SoundCraft CPS2000 technical manual Operating Voltage Range

OPERATING VOLTAGE RANGE

It is very important to use the correct mains voltage selection. A wide operating range of mains voltages is provided to enable the unit to function down to only 85Vrms on the mains supply. This facility is incorporated to overcome the problems that some power supplies have with internal regulation when operating from a poorly regulated mains supply.

Do not operate the PSU with a consistently high (above nominal) reading on the mains meter. Operation with the mains higher than +10% may cause serious damage

The mains meter is essentially a peak-reading device, as it is the peak value of the mains waveform which is the most important factor in providing the correct mains voltage to the power supply. For this reason, and because with long power cables it is common for the mains waveform to become distorted, the indication of the meter may not agree with readings taken with the usual types of quasi-RMS reading testmeter.

Note that the meter measures the voltage actually available at the PSU, and therefore will indicate any voltage drop on mains supply wiring.

REPLACING MAINS FUSE.

In the event of incorrect switching of the mains voltage selectors, a mains power surge or underrated fuse value, the mains fuse in the front panel will blow and the CPS2000 will not function. Switch the ON/OFF switch to the OFF position. Check the fuse and replace if necessary; also check that the voltage selection is correct for the mains supply level before switching the unit ON again.

To avoid risk of fire replace only with the correct value fuse, as indicated on the unit.

In the event of repeated failure of the mains fuse consult the Soundcraft dealer from where the unit was purchased.

This unit contains no user serviceable parts. Refer all servicing to a qualified service engineer, through the appropriate Soundcraft dealer.

Introduction 5