I
N
C
ASE OF
D
IFFICULTY
If you are having trouble, or suspect a problem with your Xi Series amplifier, try some simple
troubleshooting before contacting an Authorized Carver Professional Dealer, Authorized Carver
Professional Service Center or Carver Professional Technical Service. Below are listed some general
problems and items that should be checked in an attempt to resolve the difficulty.
No Sound, No Power
This is usually an indication of a power supply problem in either the power line itself or the amplifiers
power supply. Check the following:
1) Xi Series amplifiers power is switched off.
2) Line cord is disconnected.
3) Poor fit between the plug and AC receptacle.
4) Power off at AC receptacle (check with tester or lamp).
5) The amplifier is plugged into a switched outlet. Verify that the outlet is live.
6) Xi Series amplifiers mains breaker has blown. This amplifier contains no user serviceable
fuses inside the chassis.
Power On, Low Output or No Output
Low or no output problems are usually signal-source, bad cable or partial output short circuit related.
1) The input level sensitivity controls are set too low.
2) Move the input connection to another amplifier that you know is working to verify that it is
not a source problem.
3) Check speaker connections. Be sure that there are no small strands of wire touching similar
strands coming from the other wire in the cable.
4) Make sure the speakers are functioning correctly.
5) If you are using bridged-mono mode, ensure that the Input and Output configurations are
set correctly.
6) Use a voltmeter to determine if the power line voltage is dropping excessively when the
amplifier is driven hard.
7) The thermal breaker in the power transformer has opened. Allow amplifier to cool and the
breaker will reset itself.
Playback Is Mixed with Hum
1) Check or replace the connecting cables, between source and amplifiers input.
2) Make sure that each screw terminal connection is tight.
3) Signal cables may have been routed too closely to the AC cables, power transformers,
motors or EMI inducing device.
4) Try connecting another source to the power amplifier inputs. If the hum stops, the problem
lies with the original source component.
Distortion
Distortion is usually caused by excessive loss in the input controls (the mixer/equalizer/crossover
cannot produce enough output), overdriving resulting in output clipping, or current limiting caused
by excessively low load impedance.
1) Check the setting of the input level sensitivity controls. If set too high, the preceding piece
of equipment may overdrive the input stage.
2) Check the speaker connections and verify that all screw connections are tight and that
there are no stray strands of wire to cause short circuits.
3) Verify that the total load impedance presented to the amplifier is within the limits described
in this manual for mode of operation selected.
Notes
11
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