5
REPLACING THE FUSE
If the fuse is defective, replace the fuse with a fuse of the same type and value. Before replacing the fuse, unplug mains lead.
Procedure:
Step 1: Open the fuse holder on the rear panel with a fitting screwdriver.
Step 2: Remove the old fuse from the fuse holder.
Step 3: Install the new fuse in the fuse holder.
Step 4: Replace the fuse holder in the housing.
TROUBLESHOOTING
One certain method of determining if a speaker is faulty is to substitute a speaker that is known to work correctly for
the suspected problem speaker. If the “normally correct speaker” is experiencing the same difficulties or problems
as the suspected problem speaker, use the information below to isolate the problem.
Problem
Possible cause
Action
No output
Cables
Reseat all connectors
Substitute known good cables
Check solder joins
Inspect cable for damage
Inspect wire or connector for stray strand that may short
Intermittent
Poor connections
While it is possible for a faulty speaker to exhibit intermittent
output, it’s more likely that an output cable/connector is the
problem. Check the soldering on your connectors.
Constant noise,
buzzing and/or
humming
Faulty electronic
Any constant noise originates in the amplifier, mixer, signal
processing, source device in the signal devices, or line-level
wiring. Check and correct system grounding as required. Chain
check for noisy sources or electronic components. Check wiring
for shielding.
Poor low-
frequency output
Improper polarity
When two speakers in close proximity to each other are
connected out-of-polarity, they can partially cancel each other out,
especially at low frequencies. Check your speaker cables to be
sure they are all identically wired and connected. Check the
balanced line signal cables to be sure they are all correctly wired.
