Drawmer THREE-SUM Manuale dell'operatore - Pagina 5

Sfoglia online o scarica il pdf Manuale dell'operatore per Hardware del computer Drawmer THREE-SUM. Drawmer THREE-SUM 11. Multi-band interface

The Three-Sum unit will be supplied with a power cable suitable for domestic power outlets in your country. For your own

safety, it is important that you use this cable to connect to the mains supply earth. The cable must not be tampered with

or modified.

The power supply socket has an integral fuse drawer con-

taining the power fuse of the same value, to suit the mains

voltage for which the unit has been supplied. Removal of

the drawer is only possible with the power cord removed.

The fuse should never blow under normal operation. If the

fuse is suspected of having blown, then a fault will have

occurred and this fault condition should be inspected by a

qualified service engineer. When replacing the fuse, always

comply with the Safety Instructions.

If the unit is to be used with a mains input operating voltage

different to that for which the unit is supplied, the following

procedure must be carried out by a technically competent

person, (see following diagrams)

1: Disconnect the unit from the mains.

2: Using a number 1 size pozidrive screwdriver,

remove the eleven self -tapping screws that retain

the top cover. One screw is located in the top centre

of the front panel (next to the "PEAK LEVEL" text);

six screws are located on the top cover; and two

screws on either side.

3: Inside the unit slide the voltage change-over switch

(SW8) until the correct (or nearest) mains input

voltage is visible on the switch actuator.

(see fig.4)

4: In the fuse draw change the fuse to suit the following

values:

For 230 Volt operation alter the fuse to a similar type

rated at T80mA.

For 115 Volt operation alter the fuse to a similar type

rated at T160mA.

fig.2 THREE-SUM REAR CONNECTOR WIRING

POWER CONNECTION

DRAWMER T

HREE

fig.3 The Location of the Fuse

Voltage

Selector

Switch

fig.4 The Voltage Selector Switch

-S

PERATOR'S

ANUAL

Fuse