Arcam Delta 60 - Manual (Page 9)

Delta 60 integrated amplifier handbook
Internal Fuses
Loudspeaker fuses
These are 2 amp fast blow 20mm x 5mm diameter in all
models. They may blow if the amplifier is;
run continuously at high level into the correct loudspeaker load
run at high level into a loudspeaker of too low an impedance
(less than 4 ohms)
run into a short circuit
used to drive two sets of low impedance loudspeakers at once.
They are user-replaceable and two spares are provided.
However, if they blow consistently without any of the above conditions
being apparent please consult your dealer. Do
not replace with a fuse of
greater value than 2 amps (or with a 'slow blow' or 'anti-surge' fuse) since
this will endanger the amplifier and your loudspeakers and invalidate your
guarantee.
Mains fuse
The fuse type is 1.25 amp anti-surge (slow blow) 20mm x 5mm
diameter in 220V and 240V models, 2.5 amp anti-surge in 100-120V
models. This fuse is designed to protect against faults in the amplifier,
transformer and mains switch. It is not user-replaceable. If this fuse blows
there is probably a fault, and the amplifier should be returned to your dealer.
Removal of top plate
In order to inspect or change fuses, or to reach the cartridge
loading module pins, you will need to remove the top plate from
the amplifier.
BEFORE REMOVING THE COVER, ALWAYS SWITCH OFF
THE AMPLIFIER AND DISCONNECT FROM THE MAINS SUPPLY.
Note that the mains fuse remains live whenever the amplifier is
plugged into the mains, even when the amplifier power switch is in the off
position. To remove the top plate unscrew the two black headed screws
at the top of the rear panel using a No. 1 'Pozidriv' screwdriver (see figs.
1 and 3). Then lift the top plate vertically and pull it backwards slightly to
release it. Replacement is simply the reversal of this procedure.
Figure 3