Sony STR-GX315 Service Manual

STR-GX210/GX810/GX415
SERVICE MANUAL
AEP Model
STR-GX215/GX3 15/GX415
East European Model
STR-GX215/GX315
UK Model
STR-GX315
PHOTO: STR-GX415
SPECIFICATIONS
Amplifier section
AEP1, German, 90W+90W 70W+70W
East European, (4ohms) (4ohms)
UK model 80W+80W 50W+50W
DIN, IkHz (80hms) (80hms)
80W+80W 70W+70W 50W+50W
(80hms) (80hms) (80hms)
40Hz-20kHz
THD 0.3%
Harmonic distortion
Less than 0.8% at rated output
Frequency response
PHONO: RIAA equalization curve +0.5dB
CD
VIDEO | 10Hz-50kHz ‘3 dB
TAPE
Input
Sensitivity Impedance S/N (weighting network,
input level)
PHONO 2.5mV 50kilohms 75d B(A net)
75dB*(A net, 5.0 mV)
CD, VIDEO, — | 250mV 5O0kilohms 82dB (A net)
TAPE 1,2 82dB*(A net 500mV)
*78 THF
Outputs
REC OUT, Voltage 250mV
VIDEO (AUDIO) OUT Impedance 10kilohms
HEADPHONES Accepts low and high impedance
head phones
Tone controls
BASS: £10dB at 100Hz
TREBLE: +10dB at 10kHz
Loudness
+6dB (100Hz)
MICROFILM
Tuner section
Tuning range 87.5-108MHz 531-1602kHz
Antenna 75ohms, unbalanced
Sensitivity at 18.3dBf, 2.2nV (mono)
41dB quieting 40d Bf, 24.5yV (stereo)
Usable sensitivity 11.2d Bf, 1pV (IHF) Loop antenna:
300pV (at 999kHz)
Signal-to-noise ratio 70dB (mono) /66dB (stereo) | 54dB (at 50mV/m)
Harmonic distortion 0.3% (mono), 0.5% 0.5% (at 50mV/m,
(stereo) at 1kHz 400 Hz)
60dB at 400kHz 30dB at 10kHz
Frequency response 30Hz—15kHz “3° dB | —
General
System
Tuner section: PLL quartz-locked digital synthesizer system
Preamplifier section: low-noise NF type equalizer amp
Power amplifier section: pure complementary SEPP
Power requirements
220-230V AC, 50/60Hz
240V AC, 50/60Hz (U.K. model)
Power consumption
ara STR-GX415 STR-GX315 STR-GX215
AEP1, German model | 230W 200W 160W
AEP2, East European, | 165W 130W 110W
UK model
—Continued on next page— FM Stepeo
FM-AM Receiver
SONY.
FM tuner section AM tuner section
£ 8 Ei
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Sony STR-GX315 Specifications

General

Brand	Sony
Model	STR-GX315
Category	Stereo Receiver
Language	English

Summary

Model Identification

General Information

Identifying Front Panel Controls and Indicators

Identifies and describes front panel controls and indicators for various models.

Electrical Adjustments

FM Signal Level Display Adjustment

Details the procedure for adjusting the FM signal level display on specific models.

Diagrams and Schematics

IC Pin Function Details

Lists pin functions for the system control IC (µPD78043GF-SOX4072).

System Block Diagram

Presents the overall block diagram of the receiver's functional units.

Circuit Board Layouts

Illustrates the physical layout of main circuit boards within the unit.

Semiconductor Lead Layouts

Displays lead configurations for various semiconductor components.

Schematic Diagram: Main (GX215) Section

Provides the schematic diagram for the main board section specific to the GX215 model.

Schematic Diagram: Main (GX315/GX415) Section

Provides the schematic diagram for the main board section for GX315 and GX415 models.

Printed Wiring Boards: Display Section

Shows the printed wiring board layout for the display section.

Printed Wiring Boards: Main Section

Illustrates the printed wiring board layout for the main section.

Exploded Views

Cabinet Assembly View

Displays an exploded view of the unit's cabinet and its components.

Chassis Assembly View

Presents an exploded view of the unit's chassis and internal parts.

Electrical Parts List