Pioneer SX-750 Service Manual

6.4
POWER
AMPLIFIER SECTION
ldle Current Adjustment
1.
Connect
DC
voltmeter
as shown in
Fig.
17.
2.
Do not connect
load
to speaker terminals. Set
VOLUME control to
minimum
(fully
counter-
clockwise).
3. Turn VRl and VR2
(shown
in Fig. 17) fully
counter-clockwise, then set
POWER
switch to
oN.
4.1- 2
minutes after tuming
on
the
power,
adjust
VR3
(L
channel)
and
VR4
(R
channel) for
50mV indication on DC
voltmeter.
5.
20
minutes after turning on
the
power,
again
adjust VR1 and
VR2 for
30mV indication on
DC voltmeter.
Eix-7E'cl
Fig. 17
21

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