User's Manual

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appear. This is normal and does not indicate a problem with either the AVR21EN or the source
machine. The AVR21EN will return to digital playback as soon as the data is available.
• Some source devices, particularly cable set-top boxes, will switch back and forth between
digital and analog audio outputs, depending on the channel being watched. To avoid losing
sound with this type of product, it is recommended that you connect both the digital and analog
audio outputs of the source to the AVR21EN, with the digital audio input set as the default
following the steps described in AVR21EN Configuration/Source Audio Input. The AVR will
monitor the digital data stream and when it is interrupted the sound will mute briefly and
possibly display an
UNLOCK message while it switches to the analog audio input. This switching
is not a fault of either the AVR or the cable box, as it is caused by the use of different audio
technologies on different channels by the cable company or program supplier.
• Although the AVR21EN will decode virtually all current DVD movies, CDs and HDTV sources, it
may not be compatible with future digital sources.
• When a digital source is playing, you may not be able to select some of the analog surround
modes such as Dolby Pro Logic II, Dolby Pro Logic IIx, Hall, Theater or Logic 7.
• When a Dolby Digital or DTS source is playing, it is not possible to make an analog recording
using the VR [circle 5] and AUX Audio Outputs [circle 8]. However, the digital signals will be
passed through to the Digital Audio Outputs [circles 25, 26, square 14]. NOTE: The digital
signals will also be passed through to the Coaxial 3 Digital IN/OUT [square 16] if it has been
configured as an out put.
Tuner Operation
The AVR21EN has two built-in tuners capable of tuning AM, FM and FM Stereo broadcast
stations. Stations may be tuned manually, or they may be stored as favorite station presets and
recalled from a 30-position memory for each tuner
Station Selection
1. Press the Radio 1 or Radio 2 Button [oval 4] on the remote to select one of the tuners as
an input. The tuners may be selected from the front panel by either pressing the Input
Source Selector [square 15] until one of the tuners is active or by pressing the Tuner Band
Selector [square 10] followed by the necessary presses of the Input Source Selector
[square 15] to select the desired tuner.
2. Press the AM/FM Button [oval 37] or Tuner Band Selector [square 10] again to switch
between AM and FM so that the desired frequency band is selected.
3. Press the Tuner Mode Selector [square 18] to select manual or automatic tuning. When the
button is pressed so that
AUTO or AUTO/STEREO appears in the AVR Upper Display Line
[square 33], each press of the Tuning Selectors [square 6, ovals 21, 40] will put the tuner
in a scan mode that seeks the next higher or lower frequency station with acceptable signal
strength. An
AUTO ST TUNED indication will momentarily appear when the station stops at a
stereo FM station, and an
AUTO TUNED indication will momentarily appear when an AM or
monaural FM station is tuned. Press the Tuning Selectors [square 6, ovals 21, 40] again to
scan to the next station.
When the button is pressed so that
MANUAL or MANUAL/MONO appears in the AVR Upper
Display Line [square 33], each tap of the Tuning Selectors [square 6, ovals 21, 40] will
increase or decrease the frequency by one increment. When the tuner receives a strong
enough signal for adequate reception,
MANUAL TUNED will appear in the Lower Display
Line [square 34].