Hifonics MT OLYMPUS CYCLOPS 3K Produkthandbuch - Seite 8
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The key to finding the problem in a misbehaving sound system is to isolate parts of that system in a logical
fashion to track down the fault.
Description of the Diagnostic system built into all HIFONICS amplifiers
The diagnostic system will shut down the amplifier, until reset by turning the head unit off, and back on. This
condition will be indicated by the front panel PROTECT LED lighting up under the following circumstances:
1.
A short circuit on the loudspeaker leads.
2.
An internal amplifier fault that causes a DC offset on the loudspeaker output. Should the amplifier go
into diagnostic mode, simply disconnect all RCA and speaker leads, while keeping +12 volt, power
ground and remote leads connected.
Should the amplifier go into diagnostic mode, simply disconnect all RCA and speaker leads, while
keeping +12 volt, power ground and remote leads connected.
1.
After diconnecting the RCA's and speakers turn the amplifier back on, and if the diagnostic LED lights,
the amplifier has an internal fault.
2.
If the diagnostic lights are showing good condition, plug the RCA cables back, and reset the amplifier. If
it goes into diagnostic now, the fault lies in the input, either with bad cables or source unit.
3.
If the amplifier seems ok with RCA cables plugged in, connect the speakers, one at a time, and if one
speaker or its wiring is faulty, it will activate the diagnostic system.
4.
If the amplifier is still in Protection mode after the above steps, remove all RCA's and wires from the
amplifier. Take a 12" length of speaker wire, trim the plastic off of each end exposing the wire. Now
connect one end of the wire to the 12V+ on the amplifier and connect the other to the Ground on the
amplifier. You will have a brief spark indicating that the Capacitors have been discharged and the
drivercard has been reset. Remove the jumper wire and reconnect your Power, Ground and Remote
wires. Attempt to power the amplifier up like normal. In some cases this can Reset the amplifier if
permanent damage has not previously been done.
Amplifier heatsink overheating
The amplifiers will shut down when the heatsink temperature reaches 176 degrees fahrenheit (80 degrees
centigrade), and turn back on once the unit has cooled down below that point.
Causes of overheating:
1.
Inadequate cooling - relocate or remount to provide better natural airflow over the fins.
2.
Driving high power levels into low impedances - back off on the volume control, and confirm you are not
loading the amplifier with less than the recommended loudspeaker impedance.
3.
Excessive voltage drop can also cause overheating. Confirm the vehicle's electrical system is
operating properly.
Low output power
1.
Check that level controls have been set up properly.
2.
Make sure that the battery voltage, as measured at the amplifier's +12 volt and ground terminals,
is 12.6 volts or more.
3.
Check all +12 volt and ground connections.
fuses blowing
1.
The use of loudspeaker impedances below the recommended minimums will draw more current. Confirm
impedence for all speakers and subwoofer systems are not below reccomended levels.
2.
A short on the main +12 volt cable from the battery to the vehicle chassis will cause the main fuse
to blow.
3.
If an amplifier fuse blows continually, with only +12 volt, ground and remote leads connected, the
amplifier may be faulty.
System does not turn on
1.
Check all fuses.
2.
Check all connections.
3.
Measure the +12 volt and remote turn on voltages at the amplifier terminals. If these are non-existent or
low, take voltage measurements at fuse holders, distribution blocks, the head unit's +12 volt and remote
leads to localize the problem.
4.
If the HIFONICS lettering is illuminated but you do not have Power or Protection illuminated, simply
remove your remote wire and use a jumper wire from 12V+ on the amplifier to the Remote connection
on the amplifier. If the amplifier turns on like normal then you do not have adequate voltage/amperage
on the Remote turn-on wire from the source unit to turn on the amplifier. You will need to seek out a
certified installer to install a relay for your amplifier. If the jumper does not power your amplifier on,
you may have internal damage and should contact Hifonics Customer Service to locate an Authorized
Repair Center.
Noise problems
System noise can be divided into two categories, hiss, and electrical interference.
Hiss, or white noise:
1.
High levels of white noise usually occurs when amplifier level controls are turned up TOO HIGH. You
must re-adjust according to the procedures in section "D. Setting Up Systems to Maxximize Performance"
2.
Another major problem that can cause excessive hiss, is a noisy head unit - unplug the amplifier input
RCA cables, and if the hiss level reduces, the source unit is at fault.
Electrical interference:
The inside of an automobile is a very hostile electrical environment. The multitude of electrical systems, such
as the ignition system, alternator, fuel pumps and air conditioners create radiated electrical fields, as well as
noise on the +12 volt supply and ground. Remember to isolate the problem. First unplug the amplifier input
RCA cables, if the noise is still present, next check the speaker leads. If the noise is gone, plug the RCA's
back into the amplifier, and investigate the source driving the amplifier, one component at a time.
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