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Front panel indicators
e front panel Zone Status LEDs indicate the status of each of the
amplier zones:
• Red - standby
• Amber - zone muted
• Green - zone on
• Flashing Red - over temperature
RS232 remote control
e Arcam MZ ampliers may be remote controlled using an RS232
data connection. e communication protocol is described from page 13
onwards. e following functions are available:
• Zone mute on/o
• Power/Standby
• Query zone status (mute, temperature)
12V Trigger Input
If a 12V trigger output is provided by any of the pre-amps connected to
the MZ amplier, it can be connected to the 12V trigger in socket using a
3.5mm jack (shown below).
is enables the MZ amplier to be powered on or o remotely from a
pre-amp.
Note that the main power switch on the front panel must be depressed
to allow the MZ amplier to be switched in and out of standby using this
method.
Troubleshooting
If you are having trouble with your amplier, check the following items:
No sound
Check the following:
• Both the source component (pre-amp) and MZ amplier are
switched on, indicated by the front panel LED being lit green on the
MZ amplier.
• e MZ amplier is not in standby, indicated by the front panel LED
being lit red.
• e source component (pre-amp) is not muted.
• e MZ amplier is not muted, indicated by the front panel LED
being lit amber.
Sound cuts-out unexpectedly
or suddenly becomes poor or distorted:
If the temperature of the internal heatsink rises above a safe level, then
a thermal cut-out inside the amplier will operate. During this time
the front panel LED will ash red and the amplier protection system
temporarily removes the power to the speakers. e system will reset
itself as the heatsink cools down.
• With low-impedance speakers connected (6 or less), overloads are
more likely.
• Overloading the amplier may cause it to shut down because of
overheating.
Screen = Ground
Tip = +12V trigger signal
3.5mm jack - trigger connections