Mains fuses, Inspecting and changing fuses, Nllmlji nllmlii – Arcam SA200 User Manual
Page 10
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Mains Fuses
All models are fitted with an anti surge (slow blow) 20mm x 5mm diameter fuse, designed to
protect against faults in the amplifier, transformer and mains switch. The values are shown below:
SA200 (all voltages) 5A
SA150 (220/240V)
1.6A
SA150(120V)
3.15A
THESE FUSES ARE NOT USER REPLACEABLE
Should the SA150 or SA200 fail to function at switch-on the fault is probably external to the
amplifier. In particular, check the fuse in the mains plug (and distribution board, if used) before
suspecting the power amplifier. The switch-on surge currents of the SA150 and SA200 are very
great which is why a 10 or 13 Amp fuse is recommended for the mains plug. You should also
ensure that the lEC mains socket is pushed seuaely home into the lEC plug on the back panel of
the amplifier.
Inspecting and Changing Fuses
In order to inspect or change the fuses you will need to remove the top cover (see Figures
6
and 7).
BEFORE REMOVING THE COVER ALWAYS SWITCH OFF THE AMPLIFIER AND
DISCONNECT THE MAINS SUPPLY. NOTE THAT THE MAINS FUSE REMAINS LIVE
WHENEVER THE AMPLIFIER IS PLUGGED INTO THE MAINS, EVEN WHEN THE
AMPUFIER SWITCH IS IN THE OFF POSITION.
To remove the top cover use a No 1 ‘Posidriv’ screwdriver to take out the three black screws
located along the top rear edge of the amplifier, above the heat-sinks. The cover may then be
lifted gently upwards and backwards in order to free it from its locating slot in the front panel.
1 he
positions of the fuses arc shown in Figure 4. Replacement of the cover is a straight reversal of the
above procedure.
nllMlJI nllMlII
left hand _
output fuse
max. 2 5 Amp
quick blow
(SA150)
Tiax.
3.15 Amp
quick blow
(S.A200I
)
no
\
right hand
output fuse
lax. 2.5 Amp
quick blow
¡SA150)
ax. 3.15 Amp
quick blow
ISA200)
NofuSER
REPLACEABl.E
Figure
6. Location of Fuses