Aligning The Fm Mpx Section - Pioneer SX-1010 Service Manual

ALIGNING THE FM
Note: This set of adjustments should not be carried out until the alignment of the FM section
(1 ~ 12 above) has been completed.
The multiplex signal generator should be connected to the external modulator terminals
of the FM signal generator.
1010 Control Settings
1. SX-
Set the controls (knob and switches) of the SX-
POWER:
FUNCTION: FM
FM MUTING:
OFF
2. Connections between the Test Equipment and the SX-
from the FM signal generator should be connected to the
. The output
terminals of the SX-
oscilloscope X plates (horizontal inputs) should be connected to the PILOT OUT
. The
terminals on the MPX signal generator
24.
millivolt meter should be connected to the TAPE REC terminals (with changeover
. The AC
possible from L to R channels).
3. Multiplex Signal Generator Modulation
L + R (1kHz): 67.
PILOT (19kHz): 7.
4. Set the FM signal generator output to minimum.
5. Adjust for a stationary Lissajous
6. Reset the FM signal generator to 60dB level output
7. Adjust for the maximum separation.
:~ 8
MPX SECTION
1010.
, and the Y plates (vertical inputs) to terminal number
5kHz deviation
5kHz deviation
waveform on the oscilloscope.
a a
1010 as follows:
1010
, and modulate either the L or R channel.
aocco 0
~ D
300,Q antenna