Simaudio 880M Amplifier - Manual (Page 10)

880M Reference Mono Power Amplifier
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10
Operating the 880M
We recommend leaving your 880M powered up at
all times to maintain optimal performance. When
you plan on being away for a few days, it may not
be a bad idea to power off your amplifier. Please
keep in mind that once fully “broken-in”, your
880M requires several hours of operation before
reaching optimal performance after powering it up
again.
Turning on your MOON 880M for the first time
Prior to turning the amplifier on for the first time,
make sure that every cable is properly connected to
avoid any problems. Then turn on your preamplifier
connected to the 880M. Flick the main rocker
switch, located on the rear panel, labeled “POWER”
to the ‘1’ (on) position. The blue LED on the front
panel will blink for up to 10 seconds while it
achieves standby mode. When it stops blinking and
is not illuminated, your 880M is in standby mode.
Next, briefly press the push button labeled
“Standby” located on the front panel. You will hear a
very faint click sound confirming that everything is in
order. The blue LED on the front panel will
illuminate, indicating that the 880M is now powered
up and ready for use.
On and Off Sequence
To avoid having any annoying noises (ie. “thumps”
and “pops”) emanate from your speakers when
powering your 880M on or off, you should always
power up your preamplifier prior to powering up
your 880M. As well, always power down your
880M prior to powering down your preamplifier.
Troubleshooting
The blue LED located on the front panel also
indicates the operational status of your MOON
880M
Mono power amplifier. When the LED starts
blinking on and off during use, the circuitry is either
over-heating or has detected the presence of DC in
the input signal:
Left Channel DC protection ............ LED blinks 2 times
Right Channel DC protection .......... LED blinks 3 times
Left Channel Over-heating.............. LED blinks 4 times
Right Channel Over-heating ........... LED blinks 5 times
Unknown Problem ......................... LED blinks 6 times
Your MOON 880M is a “smart” power amplifier
equipped with a self-diagnostic system that will
automatically shut itself down when it detects DC
(direct current) from any input. If your 880M
power amplifier turns itself off or will not power up,
there may very well be DC present in one (or more)
of the amplifier’s inputs coming from one (or more)
of your preamplifier/processor’s outputs or
connected source components. You must determine
if there is any DC present. The best way to
accomplish this is by first powering down the 880M
via the main power rocker switch, then physically
removing all inputs to the 880M leaving only the
speakers connected. Attempt to power up your
880M again: A successful power up will indicate the
presence of DC coming from your preamplifier or
one of your signal sources (ie. CD Player).
If your 880M still doesn’t power up, turn off the
main power switch and check the AC fuse. If the
fuse appears OK, put it back in its socket and then
try to power up again the usual way. If the fuse is
blown, replace it with a fuse of the same rating, and
repeat the above process. At this point, you should
be able to power up your 880M. If not, immediately
consult your dealer for assistance.