Violectric HPA V90, Руководство пользователя

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10
THE CASE
The HPA V90'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 HPA V90's case is grounded. Internal reference ground is bridged
to protective earth by means of a jumper. If required, the jumper can be
set to 'LIFT' position (see also: page 7 "Earth/Ground concept", page 22
"Technical Appendix").
POWER SUPPLY
Mains power is provided via a three-pin IEC/CEE socket and mating
"cold-appliance" mains cord with Schuko-type plug. The device is set to
230V mains, whereas the actual voltage may vary between 190 and 240
volts for flawless operation. A toroidal transformer provides the internal
operating voltages of +/-30V 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 !!