Perreaux Radiance R200i, Руководство пользователя

Страница: 60 / 76

51
à
The entire hi-fi system must be connected to the same mains/line
power outlet. This will ensure that each piece of the system shares
the same earth or ground. This rule applies to all installations of all
brands of equipment. A preamplifier or power amplifier may be
operated from an extension cord plugged into the same mains/line
outlet.
à
When a piece of equipment is supplied with a three pin mains/line
supply lead all three pins must be connected in the correct fashion -
see your dealer if in doubt.
à
Check all interconnecting signal leads for good connections, both
internal connections and firm contact with the sockets. While the
centre pin may make firm contact, it is very important that the outer
contact is also firm.
à
Never remove the earth/ground wire from the mains/line supply of
any piece of equipment. This could be hazardous.
Broken Earth Connections
This is a common cause of hum and noise in the system. In many
instances, the only way to eliminate the possibility of hum problems
arising through a broken earth connection somewhere in the system is to
physically check every connection.
Identifying
and Isolating
Problems
When experiencing a problem, such as one channel not working, or a noise
in one channel, it is good practice to adopt a method of isolating the
problem to a specific item or area. This practice will assist in diagnosing,
curing, or at least advising your technician of the problem and result in a
saving of time, money and perhaps frustration.
A logical approach to isolating the probable cause of the problem is to start
at the loudspeakers and work back to the music source, eliminating each
piece of equipment in turn.
Caution! Observe precautions regarding volume control settings. Please
make all changes at minimum volume setting. Only increase the
volume after the connections have been made.
Check that the entire system is connected in the proper manner and that the
mains/line supply is connected and switched on.
For clarity during this section, we have labeled one loudspeaker ‘A’ and
the other loudspeaker ‘B’. In this example, loudspeaker ‘A’ appears faulty.