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Cyrus X Power
OPERATION
Key to the front panel drawing (Fig.2)
1. Standby Switch
2. Standby Light
3. Mono Light
Switching On
1$
The mains power switch
on the rear panel of the X Power should be left on
for normal operation, except when left unattended for a long period when it
should be switched off or disconnected from the AC supply.
When power is applied, the STANDBY key
b
The Standby light
shows red when the X Power is in Standby and green
when operational.
In addition to manual power control from the STANDBY key, the X Power also
features a music sensing automatic power control which listens for the
presence of an input signal and will switch on if music begins to play. If the X
Power has been activated in this way it will reset to Standby five minutes after
the music has stopped.
Remote power control can also be enabled by connecting the MC-BUS
c
sockets
of the X Power to a Cyrus system which includes a Preamplifier,
Integrated amplifier or Surround decoder. A number of X Powers may be
connected in this way to provide remote standby control of all the system
power amplifiers.
Disabling the Music Sensor
In some installations a number of X Power amplifiers may be driven from a
single preamplifier source to feed loudspeakers in several extension rooms.
In systems such as these it may be preferable to disable the Music Sensor to
prevent all amplifiers switching on when music commences.
The user can disable the Music Sensor by holding the front panel Standby
key whilst switching on the unit at the rear. The amplifier will now respond
only to the front panel standby button and MC-BUS commands. The Music
Sensor will remain disabled until power is next disconnected from the unit.
The Music Sensor may also be permanently disabled by returning the X
Power to your retailer or the Cyrus factory for an internal adjustment.
NOTE:- If MC-BUS connections are made to the X Power the music sensor is
disabled automatically.
FRONT PANEL INDICATORS
MONO Indicator
c
The MONO Indicator
will glow red if the rear panel STEREO/MONO switch
h
is set for MONO Operation. This switch can be operated only when the X
Power is in Standby. Operating it at any other time activates the fault
indication system.
a
may be used for power control.
TROUBLESHOOTING GUIDE
If your X Power is not operating properly, disconnect the power and check all
connections using the notes in this manual. If problems persist, the checklists
below may help.
If you are in any doubt, consult your dealer.
No sound from either speaker
Preamplifier mute switch is on
Loudspeakers are disconnected
Fault indication on the front panel of
your X Power
No sound from one loudspeaker
Does your speaker have fuses?
Speaker cables or interconnects
faulty
Mono installations:
Poor quality sound in two channel stereo mode
Selector switch incorrectly set to
mono
Poor quality sound in single channel mono mode
Selector switch incorrectly set to
stereo
Speakers plugs not connected to the
correct terminals
FAULT INDICATION SYSTEM
The X Power has a powerful protection system and fault indication system
designed to prevent damage to your hi-fi system and help you diagnose a
possible problem. If a fault persists, reset the amplifier via the rear panel
mains switch.
FAULT INDICATIONS
Standby light flashing Green / Yellow
This indicates overload in at least
one channel. If the problem is
temporary (e.g. excessive volume),
normal operation will resume after
ten seconds. If the fault indication
persists, there may be a problem
with the speakers or connections.
Standby light flashing Green
A fault has been reported from the
PSX-R
The PSX-R is disconnected or
switched off.
Standby light flashing Yellow / Red
The X Power has over heated.
MONO light flashing
The STEREO/MONO switch has
been changed whilst the amplifier is
operating.
If after taking remedial measures a fault condition remains, you should return
the X Power to your Cyrus appointed dealer or an authorised Service Centre.
5
User Instructions
Deselect Mute
Check speaker connections
See 'Fault Indication System'
Check speaker, replace fuses
Check connections, cables - replace
if needed
Check connections are correct to
input and output of both amplifiers.
Set the switch to stereo
Set the switch to mono
Check all speaker connections
carefully
Switch off the power at the rear
panel and unplug the speaker
cables. If the fault indication clears
when power is re-applied, check the
loudspeakers, cables and plugs for
loose strands of wire causing a
possible short circuit.
Switch off the power to the X Power
and the PSX-R Switch on again. If
the problem does not clear, return
both units to your Cyrus distributor
for checking.
Check there is power to the PSX-R
and check the PSX-R connection to
the X Power.
Check the ventilation around the X
Power. Allow the unit to cool down
before re-applying power.
Return the switch to its original
position.