Technics SA-GX550 Service Manual

AV Control Stereo Receiver
DiC [eater sunnauno|
PRO+LOGIC
SPECIFICATIONS (DIN 45 500)
@ AMPLIFIER SECTION
Power output (at 240 V)
DIN 1kHz (T.H.D. 1%)
20Hz-—20kHz continuous power output
both channels driven
Total harmonic distortion
rated power at 20Hz-— 20kHz
half power at 1kHz
Power output at the Dolby Pro Logic operation
DIN 1kHz (T.H.D. 1%)
2x 100W (4Q)
2x 65 W (8Q)
0.05% (8Q)
0.03% (8Q)
Front 2x 60W (4Q)
Center 60W (4Q)
Rear 20W (4Q)
Intermodulation distortion
rated power at 60Hz: 7kHz=4: 1, SMPTE
Power bandwidth
both channels driven, —3dB
0.5% (8Q)
10Hz—40kHz (8Q)
Damping factor 40 (8Q)
Input sensitivity and impedance
PHONO 3mV/47kQ
CD, VCR 1, VCR 2, TAPE/DCC 200 mV/22kQ
S/N at rated power (8Q)
PHONO 70dB (IHF, A: 80dB)
CD, VCR 1, VCR 2, TAPE/DCC 75dB (IHF, A: 88dB)
Frequency response
PHONO RIAA standard curve
(830Hz—15kHz) +0.8dB
CD, VCR 1, VCR 2, TAPE/DCC 10Hz—40kHz, +3dB
Tone controls
BASS 50Hz, +10 to —10dB
TREBLE 20kHz, +10 to —10dB
Loudness control (volume at —30dB) 50Hz, +9dB
Technics
ORDER NO. AD9306190C8
ervice Manual
Receiver
SA-GX550
Colour
(K)... Black Type —
Area
Suffix for Ares
Model No.
| ©) [Europe |
eS
Asia, Latin America,
Middle Near East
and Africa.
* Manufactured under license from Dolby Laboratories
Licensing Corporation. Additionnally licensed under one
or more of the following patents: U.S. numbers 3,632,886,
3,746,792 and 3,959,590; Canadian numbers 1,004,603 and
1,037,877.
"Dolby" and the double-D symbol are trademarks of Dolby
Laboratories Licensing Corporation.
Output voltage
VCR 1 OUT, TAPE/DCC REC (OUT) 200mV
Channel balance (250 Hz — 6.3kHz) +1dB
Channel separation 55dB
Headphones output level and impedance 430mV/330Q
Load impedance
AorB 4-160
A and B 8-160
FM TUNER SECTION
Frequency range 87.50— 108.00 MHz
Sensitivity
S/N 30dB 1.5yuV/750
SIN 26dB 1.3uV/75Q
SIN 20dB 1.2uV/75Q
IHF usable sensitivity (IHF '58) 1.5WV/75Q
IHF 46dB stereo quieting sensitivity 22uV/75Q
Total harmonic distortion
MONO 0.2%
STEREO 0.3%
SIN
MONO 60dB (75dB, IHF)
STEREO 58dB (71dB, IHF)
Frequency response 20Hz—15kHz, +1dB, —2dB
Alternate channel selectivity
+400kHz 65dB
Capture ratio 1.0dB
Image rejection at 98 MHz 40dB
IF rejection at 98 MHz 70dB
Spurious response rejection at 98 MHz 70dB