Violectric PRE V630, Руководство пользователя

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11
THE CASE
The PRE V630's case as well as the front/rear panels are made of solid
aluminium. This choice of material ensures high mechanical stability and
resistance.
EARTH AND GROUND
The PRE V630's case is grounded. Internal reference ground is bridged
to protective earth by means of a jumper. The jumper is set to the 'LIFT'
position (see also: page 7 "Earth/Ground concept" and page 18
"Technical Appendix").
POWER SUPPLY
Mains power is provided via a three-pin IEC/CEE socket and mating
"cold-appliance" mains cord with country dependend plug. The device is
normally set to 230V mains, whereas the actual voltage may vary
between 190 and 250 volts for flawless operation.
The US and Japan version comes with a US style mains cord and the
unit is set to 115 V mains. Here the AC voltage may vary between 85
and 125 volt for flawless operation.
A toroidal transformer and analog line regulators are providing the
internal operating voltages of +/-18 V approx.
MAINS FUSE
The 0.25A time-lag fuse is soldered in place on the circuit board. In
case, it must be replaced with a fuse of the same type only.
CAUTION !!
MIND THE SAFETY INSTRUCTIONS:
A blown fuse indicates an internal fault and
should be replaced during qualified repair or
servicing only !!