Alignment Procedures - Harman Kardon HK3350 Technical Manual

HK3350
ALIGNMENT PROCEDURES (rerer To PAGES 10,11 AND 22 THROUGH 25)
Conditions: * Make the adjustment at a room temperature of 77°F (25°C).
«After the Power switch is pushed on, wait for 30 minutes before measuring to 'be sure of the most stable
operation.
¢Set the Volume control to minimum.
Set the Speakers switch to 1 position.
BAM ADJUSTMENT
Conditions: eSet the AM mode by pressing the "FM/AM" button.
Set the Seek-Stereo switch to off (put out seek indicator) position.
«Standard modulation of the AM Signal Generator is 400Hz at 30%.
| Tracking
m@FM ADJUSTMENT
* Connect the AM Test Loop Antenna
cable into the output jack of AM
Signal Generator.
(80 dByV input signal) Place AM
Test Loop Antenna close enough to
couple signal into the AM Loop
Antenna,
Connect the VTVM and oscilloscope
to the out jacks of Tape 1 or 2.
1400kHz
*1404kHz
1400kHz
*1404kHz
1400kHz
*1404kHz
1400kHz
*1404kHz
TR241
6O0kHz
*603kKHz
600kHz
*603kHz
7241
Maximum output level and
symmetrical curve on
scope.
Maximum output
Maximum output
Repeat steps 2 and 3 for optimum sensitivity.
Conditions: «Set the FM mode by pressing the "FM/AM"button.
*Set the Seek-Stereo switch to on (seek indicator lights) position.
| Discrimi-
i nator
* International madel
L+ R= 45.5%, L- R = 45.5%, 19kHz = 9%
L+ R= 22.5%, L- R= 22.6%, 19kHz = 8%*
Connect the FM Signal Generator
to FM 3002 BAL Antenna terminals
through the 3002 balanced dummy.
{1mV (65dBf) input signal}
«Connect the Oscilloscope and
Distortion meter to the out jacks of
Tape 1 or 2.
97,9MHz 97.9MHz
97,9MHz 97,9MHz
T201{A)
T201(B}
Repeat steps 1 and 2 for
Adjust so that the lights
TUNED indicator in the
same range on both plus
(+) and minus {-} sides of
97.9MHz.
Minimum distortion.
optimum sensitivity.
97.9MHz 97. 9MHz
VR201
Adjust VR201 so that the
waveform is muted at 35
dBf input.
Separation ¢Connect the Stereo Modulator to
FM Signal Generator. Connect the
FM Signal Generator to FM 3002
BAL Antenna terminals through the
3002 balanced dummy.
(Im (65dBf) input signal)
*Connect the VTVM and Oscilloscope
to the out jacks of Tape 1 or 2,
97.9MHz
97.9MHz
Adjust so that the left (or
right} channel output be-
comes minimum when
only the right (or left)
channel of the Stereo
Modulator is modulated.