Harman Kardon HK690 - Page 5

3. FM ALIGNMENT
Conditions: e Set the function switch to FM.
Set the muting switch to off (=).
‘Station | Adjustment :
display | location | “ albert reitiont
5
Adjust
so
that
the
wave-
Connect
the
FM
signal
generator
|98.14MHz)
98.1MHz
|
7201
(A)
|
forms
in
steps
1
and
2
Connections required
le Arg rate to FM - become the same level.
2
ten
terminals
At
this
time
tuned
indi-
2 | discrimi | through the 3009 balanced 98.06mHz/ 98.1Hz | T201 (A) | At this tme
nator dummy.
"| adjustment | » Connect the oscilloscope and ‘Adjust so that the dis-
4 distortion meter to TAPE 1 OUT | 98-1MHz | 98.1MHz | 7201 (B) | tortion becomes mini-
i terminals. mum.
4 Repeat steps 1 through 3.
Tuned Adjust so that the tuned
& | indicator VR201 indicator lights at 102V
adjustment | . game as above. input.
«Connect the DC voltmeter to Adjust so that the DC
Signal TP9 (+) and ground (—). voltage becomes 11V at
6 | indicator VR202_ | ImvV input. And then,
adjustment confirm the five signal
indicator lights.
98.1MHz
7 (unmo- | 98.1MHz VR151 19.00kHz + 0.02kHz
dulation)
Confirm the stereo indi-
thod
*
Connect
the
stereo
modulator
8
(PERE
AS5%
Le
R=
45.6%,
|
S8-IMHz
|
98.1MHz
|
VR351
|
cator
lights
at
304V
apni
= Bee 19kHz = 9%) to FM signal 2208 input
generator. Set the stereo modu-
Apply signal generator output to lator to 19kHz only.
9 MPX FM 3002 BAL ANT terminals 98.1MHz | 98.1MHz) VR152 | Adjust so that L and R
[adjustment | through the 30022 balanced output level becomes
dummy. minimum.
Connect the frequency counter to Adjust so that the right
TP10 (+) and ground (—). channel output becomes
—— Connect the oscilloscope and AC minimum when only the
; voltmeter to TAPE 1 OUT left channel of the stereo
hod 10 terminals. 98.1MHz | 98.1MHz | VR301_ | modulator modulated
and so that the left chan-
- : nel output becomes mini-|
— ‘ mum when only the
right channel modulated.
< and
ut
1 indi-
dB