Astin Trew AT5000 Panduan Pengoperasian - Halaman 9
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Halaman Cetak8. Troubleshooting
If the amplifier fails to work or you sus-
pect it is not working properly, first
check all connections to and from the
amplifier. Check all the simple and
obvious things first: power supply is on
at wall, pre-amplifier and source com-
ponents are switched on and working;
loudspeaker cables are fitted and
secured at both ends.
Below are some common problems,
with suggestions for the possible cure.
The list is not exhaustive. If you can-
not resolve the problem yourself,
please consult your appointed
ASTINtrew dealer or distributor.
No power:
Check all power switches are on and
power cable is secure in the back of
the amplifier. Remove power cable
from the amplifier and check the
mains fuse, located in the mains input
socket moulding.
No output:
Check there is a signal to the power
amplifier. Re-check cable connections
to the loudspeakers.
No output from one circuit:
Check all signal cables for that chan-
nel. Remove power cable from amplifi-
er and check internal fuses, adhering
to the instructions given in section 7.
8
Audible hum:
Check the components earthing in
your hi-fi system. Discuss with your
Dealer or supplier.
Poor stereo imaging and lack of
base output:
Check polarity of speaker connections,
particularly if you are bi-wiring.
9. Specifications
Designation:
AT5000 Dual mono power amplifier
Stereo power output:
50W RMS per channel (140W peak to peak) into
8 ohms
95W RMS per channel into 4 ohms
Power supply:
2 x 300VA Low noise Toroidal Transformers
Frequency response:
+ - 0.2 db 20-20,000 hz
Total Harmonic Distortion:
Input sensitivity:
Input impedance:
Signal to noise ratio:
95 db A weighted
Internal fuse ratings:
2 amp and 5 amp slow blow 20mm glass
0.1
610mv
47K