Mains Supply; Fuse; Batteries; Automatic Mains/Battery Switching - Roberts R979 Instruction Book

General
Do not allow this radio to be exposed to water, steam or sand. Do not leave
the radio where excessive heat could cause damage such as in a parked car
where the heat from the sun can build up even though the outside temperature
may not seem too high. It is recommended that the FM band be used where
ever possible as better results in terms of quality and freedom from
interference will usually be obtained than on the MW or LW bands.

Mains supply

The R979 will operate from a supply of 230 volts, 50Hz
DO NOT cut off the mains plug from this equipment. If the plug fitted is
not suitable for the power points in your home or the cable is too short to reach
a power point, then obtain an appropriate safety approved extension lead or
adaptor. If in doubt consult your dealer.
If nonetheless the mains plug is cut off, remove the fuse and dispose of the
plug immediately, to avoid a possible shock hazard by inadvertent connection
to the mains supply.
If this product is not supplied with a mains plug, or one has to be fitted, then
follow the instructions given below:
IMPORTANT. DO NOT make any connection to the larger terminal which is
marked with the letter E or by the safety earth symbol
or Green-and-yellow.
The wires in the mains lead are coloured in accordance with the following
codes :-
BLUE - NEUTRAL
As these colours may not correspond with the coloured markings identifying
the terminals in your plug, proceed as follows:
The wire coloured BLUE must be connected to the terminal marked N or
coloured BLACK.
The wire coloured BROWN must be connected to the terminal marked L or
coloured RED.
R979 Instruction Book (Ver.2).pm6 5

Fuse

When replacing the fuse only a 3A ASTA approved to BS1362 type should
be used and be sure to re-fit the fuse cover.
Replacement fuse holders are available from Roberts Radio Technical
Services Department at the address shown on the rear of this manual.

Batteries

Remove the battery cover [23] on the rear of the radio by pushing the catch
only.
in the direction of the arrow. Remove the small cover inside the battery
compartment by pushing the cover towards the bottom of the radio. Lift up
the bottom edge of the cover and insert two IEC size LR6 (AA size) cells into
the spaces in the compartment. Take care to ensure all cells are inserted with
the correct polarity as shown inside the battery compartment. Replace the
cover.
Note : the two LR6 cells provide power for the clock / memory backup and
must be fitted at all times.
Insert four IEC size LR14 (C size) cells into the spaces in the compartment.
Take care to ensure all cells are inserted with the correct polarity as shown
inside the battery compartment. Replace the battery cover.
or coloured Green
Reduced power, distortion, and a 'stuttering' sound are all signs that the
batteries may need replacing.
We would recommend for economy, that the R979 is used on the
mains whenever possible with battery operation for occasional or
BROWN - LIVE stand-by use only.

Automatic Mains/Battery switching

To change from battery to mains operation, simply plug the mains lead into
the mains input socket [24] on the left hand end of the radio. Mains operation
is shown by the mains indicator [6]. The batteries will be automatically
disconnected. It does not matter which way round the plug is inserted but
make sure it is fully pushed home. The other end should be plugged into a
domestic supply socket.
4
IF IN DOUBT - CONSULT A COMPETENT ELECTRICIAN.
If you need any further advice, please call our Technical Helpline on
24/10/99, 14:11
0181 758 0338 (Mon-Fri)