Saturday, November 28, 2015

HARMAN KARDON HKTS 230 ACTIVE SUBWOOFER POWER SUPPLY CIRCUIT AND TROUBLE SHOOTING

ACTIVE SUBWOOFER 

HARMAN KARDON HKTS 230 

POWER SUPPLY CIRCUIT AND TROUBLE SHOOTING 

Operation
Turning the Subwoofer On and Off
Set the HKTS 210SUB’s Power Switch 8 to the ON position.
# If the Power On Mode Switch 2 is set to AUTO, the HKTS 210SUB will automatically turn itself on when it receives an audio signal, and it will go into the standby mode after it has received no audio signal for 15 minutes. The HKTS 210SUB’s leD will glow white when the subwoofer is on and will not be illuminated when the subwoofer is in standby.
# If the Power On Mode Switch 2 is set to On, the HKTS 210SUB will remain on at all times. The HKTS 210SUB’s leD will glow white.
# If the External Trigger Input 5 is connected to a trigger-voltage source, the HKTS 210SUB will turn on whenever a trigger voltage is present and will enter the standby mode after the trigger voltage ceases, regardless of the position of the Power On Mode Switch 2.
If you will be away from home for an extended period of time, or if you will not be using the subwoofer for an extended period, switch the Power Switch 8 to the OFF Position.
Subwoofer Adjustments: Volume
Use the Subwoofer Level Control 3 to set the HKTS 210SUB’s volume. Turn the knob clockwise to increase the subwoofer’s volume; turn the knob counterclockwise to decrease the subwoofer’s volume.
Subwoofer Adjustments: Phase
The Phase Switch 0 determines whether the HKTS 210SUB’s piston-like action moves in and out in phase with the satellite speakers. If the subwoofer were to play out of phase with the satellite speakers, the sound waves from the satellites could cancel out sound waves from the subwoofer, reducing bass performance and sonic impact. This phenomenon depends in part on the placement of all the speakers in the room. Although in most cases the Phase Switch 0 should be left in the NORMAL position, there is no absolutely correct setting for the Phase Switch 0. When the HKTS 210SUB is properly in phase with the satellite speakers, the audio will be clearer, have maximum impact and make percussive sounds like drums, piano and plucked strings sound more lifelike. The best way to set the Phase Switch 0 is to listen to music that you know well and set the switch in the position that gives drums and other percussive sounds maximum impact.
Subwoofer Adjustments: Bass Boost
When set to the ON position, the Bass Boost Switch 1 enhances low-frequency performance, resulting in bass with more impact, which you may prefer while watching movies or listening to music. There is no harm in experimenting with this control. Setting the switch to the OFF position will return normal low-frequency performance.
Troubleshooting
This unit is designed for trouble-free operation. Most problems that users encounter are due to operating errors. So if you have a problem, first check this list for a possible solution. If the problem persists, consult your authorized harman kardon service centre.
If there is no sound from any of the speakers:  Check that the receiver/amplifier is on and a source is playing.
# Make sure that all wires and connections between the receiver/amplifier and the speakers are connected properly.
# Make sure none of the speaker wires is frayed, cut or punctured.
# Review the proper operation of your receiver/amplifier.
If there is no sound coming from one speaker:  
# Check that the balance control on your receiver/amplifier is not set all the way to one channel.
# Check your receiver/amplifier’s speaker setup procedure to make sure that he speaker in question has been enabled and its volume level has not been turned all the way down.
# Make sure that all wires and connections between the receiver/amplifier and the speaker are connected properly.
# Make sure the speaker wires are not frayed, cut or punctured.
If there is no sound coming from the center speaker:
#Check your receiver/amplifier’s speaker setup procedure to make sure that the center speaker has been enabled and its volume level has not been turned all the way down.
# Make sure that all wires and connections between the receiver/amplifier and the center speaker are connected properly.
# Make sure the speaker wires are not frayed, cut or punctured.
# If your receiver is operating in Dolby Pro logic mode, make sure that the center speaker is not set to Phantom. 
POWER SUPPLY CIRCUIT 
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