HSU VTF-3 MK5 HP, Руководство пользователя

Страница: 8 / 12

8
Repair
If your unit needs service, please re-review the troubleshooting section first.
Contact tech support via e-mail (24/7) or call 1-800-554-0150 9am to 5pm Pacific time, Monday through Friday.
We will try and respond to emails sent to techsupport@hsuresearch.com within two business days.
• Recheck the connections between the source and the subwoofer.
• Set the subwoofer level to minimum. Use a different RCA cable to hook
the sub to a DVD player’s analog output or to an MP3 player. Play some
music and slowly turn up the volume on the sub. If the sub plays, then
the sub is fine and the problem lies either in the subwoofer cable or the
setting on the receiver, or you have connected to the wrong jack on the
receiver. If there is still no noise, call/e-mail technical support.
• If wire is loose, tighten the connector and reconnect.
• Take the driver out of the cabinet and connect to your main amplifier.
If it plays fine, then the amp is bad. If it does not play, then the
woofer is bad. Call/e-mail technical support for authorization to
send non-working part back for service.
• Take out the amplifier and make sure all the cables between the boards
are fully and securely inserted into the sockets on the boards.
• Correct the polarity of the speaker wires by matching the +/- from
the receiver/amplifier to the +/- of the subwoofer’s speaker level input.
• Connect only to the channel that has a true ground ‘ - ’. If neither
channel has a true ground ‘ - ’, e-mail/call technical support.
• Increase the volume of the subwoofer and the subwoofer level or
LFE level on the receiver or other source. It is best to set the level
of the subwoofer relative to the other speakers using a test disk and
a Radio Shack SPL meter, or built-in tones on your pre-amp/pro-
cessor. See “Volume Level” in Step 4.
• When you shut down your equipment, turn off the subwoofer first.
When powering up, turn on the subwoofer last.
The subwoofer is not receiving a
signal.
Subwoofer amplifier is faulty.
Connection between subwoofer
amplifier and woofer is faulty.
Driver or amplifier is faulty.
Ribbon cables between boards not
fully inserted (shaken loose during
shipping).
You used speaker level connections
and have mixed up the polarity of the
wires, thus shorting one channel of the
main amplifier.
You used speaker level connections
and one or both your main amplifier’s ‘ -
’ are not true ground.
Level on subwoofer or receiver’s
subwoofer output is too low.
Noise is being generated by
upstream equipment.
No output from the
subwoofer (LED
lights up red with
power switch set
to auto)
No output from the
subwoofer (LED
turns green with
power switch set
to auto)
No output from the
subwoofer (LED
lights up red with
power switch set
to on)
Little or no sound
from one main
speaker.
Bass output from
subwoofer is low.
Subwoofer
thumps when the
system is being
turned on and off.
Problem Cause Solution