Harman Kardon HK690I - Features; High Instantaneous Current Capability (HCC); Low Negative Feedback; Ultrawideband Response

an
7
-
ALIGNMENT PROCEDURES
= AMPLIFIER SECTION
“ @ DC balance and idling adjustments
is
Conditions:
¢
Set
the
function
switch
to
aux/DAD.
Set the volume to minimum.
3. FM ALIGNMENT
Conditions: Set the function switch to FM.
Set the muting switch to off (om).
Set
the
speaker
system
switches
1
and
2
to
OFF.
=
=
oo
=
}
Make
sure
that
primary
supply
voltage
comes
within
120
V
+
2V.
_
Connections
required
cou
Adlusement
|
adjustment
method
Make
the
adjustment
at
a
room
temperature
of
25°C.
eae
feo
2
:
:
4
Adjust
so
that
the
wave-
Ti
ane
as
1
Connect
the
FM
signal
generator
|98,14MHz|
98.1MHz
|
1201
(A)
|
forms
in
steps
1
and
2
‘ideation
|,
Cores
value
Uikte
100%
modulation)
to
FM
tocoye
teaeaaie
:
i
a
is
ne
fof
8
0
NT
terminals
is
ti
indi.
Connect
the
digital
voltmeter
between
TP1
and
vR401
62108
:
Discrimi-
|
"through
the
3000
balanced
88:00MH2]
98,1MHz
|
7201
(A)
|
At
this
tne
tuned
Indl
id.
(L
channel)
tor.
dummy.
=
DC
balance
srouny
adjustment
}
6
co
i
adjustment
Connect
the
digital
voltmeter
between
TP2
and
,
Connect
the
oscilloscope
and
Adjust
so
that
the
dis-
jus
Connect.
tule
volver
Benyenn
Th2
feel
0+10mv
|
distortion
meter
to
TAPE
1
OUT
98.1MHz
|
98.1MHz
|
7201
(B)
|
tortion
becomes
mini-
.
terminals,
mum,
Connect
the
digital
voltmeter
to
TP3
and
TP4.
ieee
30mV
4
Repeat
steps
1
through
3.
Idling
Tuned
F
Jun
Adjust
so
that
the
tuned
adjustment
Connect
the
digital
voltmeter
to
TP5
and
TP6.
VR404
30mv
6
|
indicator
VR201
| indicator
lights
at
104V
{R
channel)
__|
adjustment
|
,
same
as
above.
input
C
:
Repeat
steps
1
through
4
after
aging
for
10
minutes.
|
Connect
the
DC
voltmeter
to
Adjust
so
that
the
DC
Signal
TP9
(+)
and
ground
(—).
voltage
becomes
11V
at
6
oe
F
VR202
mV
input.
And
then,
jjustment
confirm
the
five
signal
=
TUNER
SECTION
indicator
lights.
1.
STANDARD
FREQUENCY
CHECK
98.1MHz
Condition:
«
Set
the
function
switch
to
FM.
7
{unmo-
|
98.1MHz}
VR151_
|
19.00kHz
+
0.02kHz
dulation)
Measurement
|
Station
|
Adjustment
roar
Confirm
the
stereo
indi-
“frequency”
|
display
|<
location
|
Adlstment
method
8
Hea
Te
eT
aeaece,
|
98.1MHz
|
98.1MHz
|
VR3S1
|
cator
lights
at
30uV
.5%,
L
—
R=
45.5%,
arias
:
#
Contec
the
freaueney
unter
8
|
98.3
MHz
109MHz
+
2kHz
|__|
{Ske
=
98)
to
FM
sana
288
Se
}.
nerator,
the
stereo
modu-
:
iby
«
Apply
signal
generator
output
to
lator
to
19kHz
only.
t
©
Mjactment
|
FM3002BAL
ANT
terminals
|
98.1MHz
|
98.1MHz
|
VR152_|
Adjust
so
that
L
and
R
2.
AM
ALIGNMENT
through
the
3002
balanced
output
level
becomes
Conditions:
e
Set
the
function
switch
to
AM.
dummy.
minimum.
.
Set
the
muting
switch
to
off
(m=).
«Connect
the
frequency
counter
to
ji
i
me
TP10
(+)
and
ground
(—).
beni
Catoee
see
ate
5
F
Connect
the
oscilloscope
and
AC
ini
:
:
Tat
|
MORE
|
Sauer
(Admin
|
.
=]
voltmeter
to
TAPE
1
OUT
Sustedmh
when
anly
te
Item
Connections
required
rement
tatio
Adjustment
one
thod
fi
left
channel
of
the
stereo
(
ee
(eee
lrequency,
display
|
location
ane
il
10.
terminals.
98.1MHz
|
98.1MHz
|
VR301__|
modulator
modulated
i
‘i
and
so
that
the
left
chan-
Tuning
SConnact
the
DC
voltmeter
to
520kHz
|
L252
1.5V
+
0.05V
nel
output
becomes
mini-
A
TP11
(+)
and
ground
(-~).
mum
when
only
the
2.
|
adjustment
1710kHz
|
TC252
23V
£0.5V
right
channel
modulated.
Radiate
output
of
AM
signal
generator
(400Hz
30%
modula-
¥
mister
tion)
to
AM
loop
antenna,
450kHz|
1600kHz
|
73P)
_
|
Adlust
so
that
peak
and
Connect
oscilloscope
to
TPS
(+)
82
|
good
waveform.
and
ground
(—).
Radiate
output
of
AM
signal
generator
(400Hz
30%
modula-
600kHz}
600kHz
L251
Tracking
tion)
to
AM
loop
antenna.
Maximi:
adjustment
|
*
Connect
oscilloscope
and
AC
Mexiize
she
cutout
voltmeter
to
TAPE
1
OUT
termi-
|1400kHz|
1400kHz
|
C251
:
nals.
;
Repeat
steps
4
and
5.
x
Tuned
©
Radiate
output
of
AM
signal
gener-
Confirm
the
tuned
indi-
inalestor
ator
(400Hz
30%
modulation)
to
|
1000kHz
|
1000kHz
cator
lights
at
60 dB
confirma-
Ps
at
tion
AM
loop
antenna.
input.