Dolby Laboratories 430 - Manual (Page 16)

3-5
3.5 Regulatory Notices
WARNING: Check that the unit has been set to the correct supply voltage and that the correct
fuse is installed. To reduce the risk of fire, replace the fuse only with the same
type and rating.
For 100/120 Vac, use 1.25A/250 V 1/4" x 1-1/4" slow-blow fuse.
For 220/240 Vac, use T630 mA/250 V 5 x 20mm time-lag fuse.
The power supply input connector has positions for two fuses and will accept carriers for either 20 mm or
1.25" fuses; only the upper fuse position is electrically connected. Select the appropriate fuse and carrier,
and insert the assembly into the upper position with the arrow on the carrier in the same direction (upwards)
as the arrows inside the compartment door (Note: a spare fuse of the same rating and type can be put in
the lower position). When closing compartment door, make sure that it clicks firmly into place.
To ensure proper operation and guard against potential shock hazard, the unit must be connected only to a
properly wired, grounded (earthed) power outlet. If you are uncertain about the wiring of your outlet do not
use it. Consult a qualified electrician. The power cable is furnished either with a standard U.S.A. three-
prong plug or with unterminated leads for use in other countries. The wires are colored as follows.
International U.S.
live or hot brown black
neutral blue white
earth green/yellow green or
green/yellow
Before the power cable is connected to the unit, ensure that a qualified electrician has wired it as above.
Troubleshooting must be performed by trained technicians. Do not attempt to service the unit unless you
are qualified to do so.
U.S. Style Plugs
The ground terminal of the plug is connected directly to the chassis of the unit. For continued protection against
electric shock, a three-pin power receptacle MUST be used, and the ground wire MUST always be connected. DO
NOT use a ground-lifting adaptor and NEVER cut the ground pin on a three-prong plug.
Connections for United Kingdom
WARNING: THIS APPARATUS MUST BE EARTHED.
As the colours of the cores in the mains lead may not correspond with the coloured markings identifying the
terminals in your plug, proceed as follows:
- the core which is coloured green and yellow must be connected to the terminal in the plug which is marked with
the letter E or by the earth symbol , or coloured green or green and yellow.
- the core which is coloured blue must be connected to the terminal which is marked with the letter N or coloured
black.
- the core which is coloured brown must be connected to the terminal which is marked with the letter L or
coloured red.
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