Harman kardon hk 500 service manual

Page 2

ALIGNMENT PROCEDURES

lN-TUNE INDICATOR AND MUTING SENSITIVITV/BAND WIDTH ADJUSTMENT

INSTRUMENTS

1. FM Signal Generator modulated with 1000Hz at 100%.
2. Oscilloscope.

3, V. T. V. M.

4. Frequency Counter

NOTE

1. Set function selector switch to FM position.
2. Set FM muting control to ON position.
3. Connect signal source to FM antenna terminals.

SIGNAL SOURCE CONNECT OUTPUT
STEP _ FREQUENCY STRENGTH METER T0 DIAL SETTING ADJUST ADJUST FOR
1 98 MHz 2 IN V. T. V. M. and osc. Near 98 MHz Tuning Maximum output
illoscope to fixed control
output jack
2 Set FM muting control to minimum position.
3 98 MHz 2 uv Preset point VR206 ln-tune indicator lights
4 Set FM muting control to maximum position.
5 98 MHz 125 (JV Preset point VR205 ln-tune indicator lights
6 1 mV V. T. V. M. and osc- FM Turn frequency dial
illoscOpe to fixed signal ciockwise until
output jack generator signal disappears from
oscilloscope and note
the frequency of the
signal on the frequency
counter
7 Turn frequency dial
counter-clockwise until
signal disappears from
oscilloscope and note
the frequency of the
signal on the frequéncy
counter
8 VR202 Repeat steps 3 and 4, and

adjust until the difference
of frequencies from step
3 and 4 becomes 125 kHz