File name Sony-STD777ES tun.pdfST-D777ES
SERVICE MANUAL
AEP Model UK Model
SPECIFICATIONS
DAB tuner section Frequency range 174.928 (5A) - 239.200 (13F) MHz 1452.960 (L1) - 1490.624 (L23) MHz Sensitivity 6.9 µV/28 dBf Signal-to-noise ratio 100 dB THD+N 0.005 % (1 kHz) Channel separation 90 dB (1 kHz) Selectivity 35 dB (at adjacent channel) Frequency response +0.2/-0.3 dB (5 Hz - 20 kHz) DA converter Pulse D/A S-TACT128 Digital filter VC24 (only for DAB analog output) Digital output Terminals: Coaxial and Optical Sampling frequncy: 48 kHz RDI output Optical Aerial terminal 75 , F female FM tuner section Frequency range Sensitivity AM tuner section Frequency range MW: 522 - 1,611 kHz (9 kHz step) LW: 144 - 288 kHz (1 kHz step: Manual tuning) (3 kHz step: Automatic tuning) (with AM loop aerial) MW: 200 µV/m LW: 700 µV/m MW: 54 dB (50 mV/m, 999 kHz) LW: 50 dB (50 mV/m, 216 kHz) 0.3 % 50 dB Push lever
Sensitivity
Signal-to-noise ratio Harmonic distortion Sensitivity Aerial terminal
Signal-to-noise ratio THD+N
Channel separation Selectivity
Frequency respose Aerial terminal
87.5 - 108.0 MHz at 40 kHz derivation at 26 dB quieting (mono) 0.9 µV/10.3 dBf at 46 dB quieting (stereo) 23 µV/38.5 dBf at 40 kHz derivation 80 dB (mono), 76 dB (stereo) 1 kHz, 40 kHz derivation WIDE 0.035 % (mono), 0.045 % (stereo) 50 dB (1 kHz) WIDE at 400 kHz WIDE 85 dB NARROW 90 dB +0.2/-0.3 dB (30 Hz - 15 kHz) 75, IEC male
General Power requirements 230 V, AC 50/60 Hz Power consumption 20 W Dimensions 430 × 97.5 × 374 mm (w/h/d) Weight 6.2 kg Remote control capability IR Station preset capacity max. 99 (DAB, FM and AM total) Supplied accessories · Audio cord (1) · AM loop aerial (1) · FM wire aerial (1) · DAB wire aerial (1) · Remote commander (1) · R6 (size AA) baatteries (2)
Design and specifications are subject to change without notice.
DAB/FM/AM TUNER
TABLE OF CONTENTS 1. 2. 3. 4. GENERAL ······································································· 3 TEST MODE ································································· 12 ELECTRICAL ADJUSTMENTS ····························· 14
DIAGRAMS ··································································· 17 4-1. BLOCK DIAGRAM ·························································· 17 4-2. CIRCUIT BOARDS LOCATION ····································· 18 4-3. PRINTED WIRING BOARD MAIN SECTION ············ 19 4-4. SCHEMATIC DIAGRAM MAIN SECTION (1/4) ········ 20 4-5. SCHEMATIC DIAGRAM MAIN SECTION (2/4) ········ 21 4-6. SCHEMATIC DIAGRAM MAIN SECTION (3/4) ········ 22 4-7. SCHEMATIC DIAGRAM MAIN SECTION (4/4) ········ 23 4-8. SCHEMATIC DIAGRAM DISPLAY SECTION ··········· 24 4-9. PRINTED WIRING BOARD DISPLAY SECTION ······ 25 4-10. SCHEMATIC DIAGRAM POWER SECTION ············· 26 4-11. PRINTED WIRING BOARD POWER SECTION ········ 27 4-12. IC PIN FUNCTION DESCRIPTION ······························· 28 4-13. IC BLOCK DIAGRAMS ·················································· 31
5.
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