Pioneer SX-1010 Service Manual

ALIGNING THE FM
MPX SECTION
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.
1. SX-
1010 Control Settings
Set the controls (knob and switches) of the SX-
1010 as follows:
POWER:
FUNCTION: FM
FM MUTING:
OFF
2. Connections between the Test Equipment and the SX-
1010
. The output
from the FM signal generator should be connected to the
300,Q antenna
terminals of the SX-
1010.
. The oscilloscope X plates (horizontal inputs) should be connected to the PILOT OUT
terminals on the MPX signal generator
, and the Y plates (vertical inputs) to terminal number
24.
. The AC
millivolt meter should be connected to the TAPE REC
terminals (with changeover
possible from L to R channels).
3. Multiplex Signal Generator Modulation
L + R (1kHz): 67.
5kHz deviation
PILOT (19kHz): 7.5kHz deviation
4. Set the FM signal generator output to minimum.
5. Adjust for a stationary Lissajous
waveform on the oscilloscope.
6. Reset the FM signal generator to 60dB level output
, and modulate either the L or R channel.
7. Adjust for the maximum separation.
:~
:~ 8
aocco 0
~ D
a a

Pioneer SX-1010 Specifications

General

Power Output	100 watts per channel into 8Ω (stereo)
Tuning Range	FM, MW
Input Sensitivity	2.5mV (MM), 150mV (line)
Speaker Load Impedance	4Ω to 16Ω
Total Harmonic Distortion	0.1%
Signal to Noise Ratio	95dB (line)
Output	150mV (line)
Semiconductors	67 x transistors
Channel Separation	55dB (line)