Panasonic Dvd Home Theater Sound System Sc Ht680 Operating Instructions

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Changing the player settings
∫“Audio” tab
∫“Display” tab
∫“Others” tab
(Effective when playing multi-channel audio)
(Center and surround speakers only)
For optimum listening with 5.1-channel sound, all the speakers, 
except for the subwoofer, should be the same distance from the 
seating position. If you have to place the center or surround 
speakers closer to the seating position, adjust the delay time to 
make up for the difference.
If either distance a or b is less than c, find the...

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Sound field and sound quality
Sound field and sound quality
[Note]
≥When connected with headphones, the following sound field 
systems have no effect. (Excluding Sound Field Control)
≥You may experience a reduction in sound quality when these 
sound field systems are used with some sources. If this occurs, 
turn the sound field system off.
≥If you turn on Super Surround, Dolby Pro LogicII is canceled and 
vice versa.
Changes the sound quality.
Press [SFC].
Each time you press the button:...

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This is one of the ways to get appropriate surround effects.
Preparation
Press [DVD/CD].
1While stopped and no on-screen display is shown
Press [SHIFT]i[TEST] to output a test 
signal.
L: Front left  C: Center  R: Front right
RS: Right surround LS: Left surround
≥There is no output from SW (subwoofer) channel.
2Press [VOLUME, r] or [s] to set the 
volume level normally used for listening.
3Press [3] (increase) or [4] (decrease) to 
adjust the speaker level for each speaker.
C, RS, LS: `6dB to...

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The radio
The radio
Up to 15 stations can be set in each band, FM and AM.
1Press [SELECTOR] to select “FM” or “AM”.
2Press [TUNE MODE] to select “MANUAL”.
Each time you press the button: MANUAL()PRESET
3Press [XTUNINGW] to tune to the lowest 
frequency (FM: 87.9 or 87.5, AM: 520).
4Press and hold [MEMORY].
Release the button when “FM AUTO” or “AM AUTO” is 
displayed.
The tuner presets all the stations it can receive into the 
channels in ascending order.
≥“SET OK” is displayed when the...

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Operating other equipment
Operating other equipment
You can use the remote control to operate a Panasonic television or a video cassette recorder. Connect your equipment referring to “Connection 
example” (➜above).
[Note]
The remote control may not work properly with some models.
Preparation
Aim the remote control at the unit and press [TV] to light up the 
button, and then aim it at the television for the following operations:
Turning the television on/off
Press [ÍAV SYSTEM].
Switching the...

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Other speaker setup options
Other speaker setup options
∫Attaching to a wall
You can attach all of the speakers to a wall.
1Drive a screw (not included) into the wall.
2Fit the speaker securely onto the screw(s) with the hole(s).
≥The wall or pillar on which the speakers are to be attached should be 
capable of supporting 10 kg (22 lbs) per screw. Consult a qualified 
building contractor when attaching the speakers to a wall. Improper 
attachment may result in damage to the wall and speakers....

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Specifications
Specifications
AMPLIFIER SECTION
RMS Output Power: Dolby Digital Mode
Front Ch 55 W per channel (6 ≠), 1 kHz, 10 % THD
Surround Ch  55 W per channel (6 ≠), 1 kHz, 10 % THD
Center Ch  160 W per channel (6 ≠), 1 kHz, 10 % THD
Subwoofer Ch  220 W per channel (4 ≠), 100 Hz, 10 % THD
Total RMS Dolby Digital mode power  600 W
FTC Output Power: Dolby Digital Mode
Front Ch 35 W per channel (6 ≠), 120 Hz – 20 kHz, 1 % THD
Surround Ch 35 W per channel (6 ≠), 120 Hz – 20 kHz, 1 % THD...

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Troubleshooting guide
Troubleshooting guide
Before requesting service, make the following checks. If you are in doubt about some of the check points, or if the solutions indicated in the chart 
do not solve the problem, refer to the “Customer Services Directory” on page 31 if you reside in the U.S.A., or refer to the “Product information” on 
page 30 if you reside in Canada.
PowerPage
Unresponsive or inoperable function
Specific operation undesirable or unexpected
Subtitle
Marker
A-B repeat...

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Troubleshooting guide
Menus Page
Picture abnormal or unviewable
Progressive video
Listening to the radio
Television operation
Unit displays
Television displays
The Setup menu cannot be 
accessed.≥Select “DVD/CD” as the source.
≥Cancel program and random play.—
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Picture distorted.≥Ensure that the unit is connected directly to the television, and is not connected through a video 
cassette recorder.6
Picture size doesn’t fit the 
screen.≥Change “TV Aspect” in the “Video” tab.
≥Change the Zoom...

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Product Service/Maintenance/Glossary
Product Service
1. Damage requiring service— The unit should be serviced by 
qualified service personnel if:
(a) The AC power supply cord or AC adaptor has been damaged; 
or
(b) Objects or liquids have gotten into the unit; or
(c) The unit has been exposed to rain; or
(d) The unit does not operate normally or exhibits a marked 
change in performance; or
(e) The unit has been dropped or the cabinet damaged.
2. Servicing —Do not attempt to service the unit...