Pioneer SX-750 Service Manual

6.
ADJUSTMENTS
6.1.
AM
SECTTON
1.
Set
function switch to
AM.
2. Connect AM
signal
generator
through
lk-ohm
resistor to
AM
antenna terminal.
3.
Set
DUPLICATE
switch to
OFF
and connect
an AC
voltmeter to TAPE 1
REC
jacks.
4. Set AM SG
for 4O0Hz 30% modulation 74dB
output.
5. Set
SX-750 dial indication
and
AM SG
fre-
quency
for 600kHz.
6.
Adjust
T8 core
for maximum
reading on
AC
voltmeter.
7. Set
SX-750
dial
indication
and
AM SG fre-
quency
for
1,400kH2.
8.
Adjust TCz for maximum
reading on
AC
voltmeter.
9. Set AM SG
for
30dB
output.
10. Set SX-750
dial indication and
AM SG fre-
quency
for 600kHz.
11. Adjust T8 and
bar antenna core
for maximum
reading on AC
voltmeter.
12. Set SX-750
dial indication
and AM SG
fre-
quency
for 1,400kH2.
13. Adjust TCz,
TC4 for maximum
reading on AC
voltmeter.
14. Repeat steps
10-13 to eliminate
variations in
AC
voltmeter readings.
AM signal
generator
Fig.
14
1El

Pioneer SX-750 Specifications

General

Signal to Noise Ratio	75dB (MM), 90dB (line)
Tuning Range	FM, MW
Damping Factor	30
Power Output	50 watts per channel (8 ohms, 20Hz-20kHz)
Frequency Response	10Hz to 50kHz
Total Harmonic Distortion	0.3%
Input Sensitivity	2.5mV (MM), 150mV (line)
Output	150mV (line)
Speaker Load Impedance	4Ω to 16Ω