Harman Kardon AVR 3550HD Service Manual Download Page 8

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REAR-PANEL CONNECTIONS

Main Power Switch:

This mechanical switch turns the power supply

on or off. It is usually left in the up position (On), and cannot be turned
on using the remote control.

and

FM Antenna Terminals:

Connect the included AM

and FM antennas to their respective terminals for radio reception.

XM Antenna Jack:

Plug in an XM Connect-and-Play or Mini-Tuner

antenna module here. The XM antenna module is purchased separately,
and should specify that it is for home use with an XM Ready

product.

You will need to subscribe to the XM service, which is available sepa-
rately, and activate the service for your antenna module. (XM service
is not available in Alaska and Hawaii.)

Front, Center

and

Surround Speaker Outputs:

Use two-

conductor speaker wire to connect each set of terminals to the correct
speaker. Remember to observe the correct polarity (positive and negative
connections). Always connect the positive lead to the colored terminal
on the receiver and the red terminal on the speaker. Connect the negative
lead to the black terminal on both the receiver and the speaker. See the
Connections section for more information on connecting your speakers.

Surround Back/Zone 2 Speaker Outputs:

These speaker

outputs are used for the surround back channels in a 7.1-channel home
theater, or may be reassigned to a remote room for multizone operation.
When these outputs are reassigned for multizone operation, only a
5.1-channel configuration will be available in the main listening room.
Use the on-screen menu system to configure these channels as desired.

As with the other speaker outputs, remember to observe proper
polarity by connecting the positive and negative output terminals to
the corresponding terminals on each speaker.

Subwoofer Output:

If you have a powered subwoofer with a

line-level input, connect it to this jack.

Preamp Outputs:

Connect these jacks to an external amplifier if

more power is desired.

The Surround Back/Zone 2 Preamp Outputs may be used with an
external amplifier to power the surround back channels, or to power
the remote zone of a multizone system. Use the on-screen menu
system to configure these channels as desired.

Remote Infrared (IR) Input

and

Output:

When the remote IR

receiver on the front panel is blocked, such as when the AVR is placed
inside a cabinet, connect an optional IR receiver to the Remote IR Input
jack for use with the remote control. The Remote IR Output may be
connected to the Remote IR Input of a compatible product to enable
remote control through the AVR. This is particularly useful in multizone
applications to control a source device from the remote room (when
used with the Zone 2 IR Input). When several source devices are used,
connect them in “daisy chain” fashion.

Zone 2 Infrared (IR) Input:

Connect a remote IR receiver located

in the remote zone of a multizone system to this jack to control the AVR
(and any source devices connected to the Remote IR Output) from the
remote zone.

Remote IR Carrier Output:

This output is similar in function to

the Remote IR Output, with the difference that this jack outputs the full
infrared signal as received by the AVR’s IR sensor or the Remote IR
Input, while the Remote IR Output jack outputs a “stripped” signal that
has no carrier frequency. The full signal may be required by some
components with IR inputs. It may also be required when you connect
external IR emitters or other devices to the AVR to pass IR signals to
other components.

A-BUS IR Output:

This is an additional IR output that may only be

controlled through the A-BUS system. Use it as a dedicated connection
to sources used only with the A-BUS system, or if the other IR outputs
are in use for incompatible applications.

A-BUS Port:

Use a Category 5/5e cable to connect this port to

optional A-BUS equipment for multizone operation. When the A-BUS
system is used, it is possible to have a full 7.1-channel system in the
main listening room at the same time the multizone system is in use.

Composite

and

S-Video 1, 2

and

3 Video Inputs:

These

jacks may be used to connect your video-capable source components
(e.g., VCR, DVD player, cable TV box) to the receiver. Use only one type
of video connection for each source. These inputs are assignable, which
means they may be paired with any analog or digital audio inputs. This
will be explained in more detail in subsequent sections of this manual.

NOTE:

The Video 2 inputs are associated with a set of outputs.

Consider connecting a video recorder here.

Composite

and

S-Video 2 Outputs:

Connect one of these

analog video outputs to the composite or S-video inputs of a recording
device. A signal is available at these outputs whenever an analog video
source is playing. HDMI and component video signals are not available
for recording.

Composite

and

S-Video Monitor Outputs:

If any of your

sources use composite or S-video connections, connect one or both of
these monitor outputs to the corresponding inputs on your television or
video display. If your video display is equipped with HDMI or component
video inputs, these connections are unnecessary. Connect the HDMI
Monitor Output (if available, otherwise use the Component Video Monitor
Output) to your TV, and the AVR 3550HD will convert the composite
or S-video source signal to the correct format for a single video cable
connection to the TV.

HDMI Inputs

and

Output:

HDMI (High-Definition Multimedia

Interface) is a connection for transmitting digital audio and video signals
between devices. With the AVR 3550HD’s powerful processor, you may
connect up to three HDMI-equipped source devices to the HDMI inputs
using a single-cable connection, while benefiting from superior digital
audio and video performance. If your video display is not HDMI-compatible,
connect the device to one of the analog video inputs, then pair it with
an analog or digital audio input.

If your video display has an HDMI input, make just the HDMI video con-
nection to your display; the AVR 3550HD will automatically transcode
analog video signals to the HDMI format, upscaling to as high as 1080p.

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AVR3550HD

harman/kardon