AVR 55 - Harman Kardon Audio Service Manual (repair manual). Page 5

Front Panel Controls

1

Press this

button to apply power to the AVR55.
When the switch is pressed the unit
is placed in a Standby mode, as
indicated by the amber LED 

3 sur-

rounding the 

control

2. This button MUST be pressed in
to operate the unit regardless of the
status of the Power Switch at the
bottom of the front panel. To turn the
unit off and prevent the use of the
remote control, this switch should be
pressed until it pops out to extend
from the front panel so that the word
“OFF” may be read at the top of the
switch.

NOTE:

In normal operation this

switch may be left in the “on”
position.

2

When

the 

1 is

pressed in, press this button to turn
on the AVR55, press it again to turn
the unit off. Note that the 

surrounding the switch 3

will turn green when the unit is on.

3

This LED will

illuminate in amber when the unit is
in the Standby mode, to signal that
the unit is ready to be turned on.
When the unit is in operation the
indicator will turn green.

4

This button is

used to enter settings for speaker
modes, tuner presets and delay 
time after making the appropriate
selection.

5

This jack may

be used to listen to the AVR55’s out-
put through a pair of headphones.
Be certain that the headphones
have a standard 

1

⁄

4

″

stereo phone

plug.

6

Press this button to

select the stereo or mono mode for
FM tuning. In the STEREO mode a
STEREO indicator will illuminate in
the information display, and stereo
reception will be provided when sta-
tions are transmitting stereo signals.
In the MONO mode the left and right
signals from stereo broadcasts will
be mixed together and reproduced
through all channels. Select MONO
for better reception of weak signals. 

7

This switch

controls the front left/right speakers.
For normal operation it is pressed in
and sound is heard through the front
speakers. To silence the front
left/right speakers, push the button
once until it is in the “out” position.
When the front speakers are turned
off sound will continue to be heard
through the center and rear speakers
and the headphone jack.

8

Press this button to

select the tuner as the AVR55’s input
source. When it is first pressed the
last station tuned will appear. Press
it again to change between AM and
FM bands.

9

Press the left 

side of the button to tune lower
frequency stations and the right side
of the button to tune higher frequency
stations. When a station with a strong
frequency is tuned, the 

indicator will illuminate in the

35. A brief 

(1/2 second) press of the button will
manually tune to the next frequency
increment, while pressing and hold-
ing the button for a longer period will
automatically tune to the next station
with a signal strong enough for
acceptable reception.

)

Press this button to select

the device connected to the 

jacks d as the listening

source.

!

Press this button

to select the device connected to
the 

jacks ⁄ as the lis-

tening source. The 

indicator

K will illuminate to indicate that the
Tape Monitor has been selected,
while the input being monitored will
remain in the 

F.

@

Press this button to

select the device connected to the

jacks ª as the listening

source.

#

Press this button to

select the 

e as the

listening source.

$

Press this button to select the

device connected to the 

jacks ¤ as the listening and viewing
source.

%

Press this button to

select the device connected to the

jacks ‹ as the listening

and viewing source.

^

Press this button to 

select the device connected to the

jacks ° as the listening

and viewing source.

&

Press this button 

to select the device that will be
recorded by the device connected
to the 

jacks ›. The

selected source is shown in the 

indicators 

A in the

35. Note that

this recording will take place even if
another source is being listened to.

*

Press this button to select

the device connected to the 

jacks · as the listening and

viewing source.