Sony-ST-D777ES-Service-Manual电路原理图.pdf
《Sony-ST-D777ES-Service-Manual电路原理图.pdf》由会员分享,可在线阅读,更多相关《Sony-ST-D777ES-Service-Manual电路原理图.pdf(44页珍藏版)》请在收音机爱好者资料库上搜索。
1、ST-D777ES AEP Model UK Model SERVICE MANUAL DAB/FM/AM TUNER SPECIFICATIONS DAB tuner section Frequency range174.928 (5A) - 239.200 (13F) MHz 1452.960 (L1) - 1490.624 (L23) MHz Sensitivity6.9 V/28 dBf Signal-to-noise ratio100 dB THD+N0.005 % (1 kHz) Channel separation90 dB (1 kHz) Selectivity35 dB (a
2、t adjacent channel) Frequency response+0.2/-0.3 dB (5 Hz - 20 kHz) DA converterPulse D/A S-TACT128 Digital filterVC24 (only for DAB analog output) Digital outputTerminals: Coaxial and Optical Sampling frequncy: 48 kHz RDI outputOptical Aerial terminal75 , F female FM tuner section Frequency range87.
3、5 - 108.0 MHz Sensitivityat 40 kHz derivation at 26 dB quieting (mono) 0.9 V/10.3 dBf at 46 dB quieting (stereo) 23 V/38.5 dBf Signal-to-noise ratioat 40 kHz derivation 80 dB (mono), 76 dB (stereo) THD+N1 kHz, 40 kHz derivation WIDE 0.035 % (mono), 0.045 % (stereo) Channel separation50 dB (1 kHz) WI
4、DE Selectivityat 400 kHz WIDE 85 dB NARROW 90 dB Frequency respose+0.2/-0.3 dB (30 Hz - 15 kHz) Aerial terminal75, IEC male AM tuner section Frequency rangeMW: 522 - 1,611 kHz (9 kHz step) LW: 144 - 288 kHz (1 kHz step: Manual tuning) (3 kHz step: Automatic tuning) Sensitivity(with AM loop aerial) M
5、W: 200 V/m LW: 700 V/m Signal-to-noise ratioMW: 54 dB (50 mV/m, 999 kHz) LW: 50 dB (50 mV/m, 216 kHz) Harmonic distortion0.3 % Sensitivity50 dB Aerial terminalPush lever General Power requirements230 V, AC 50/60 Hz Power consumption20 W Dimensions430 97.5 374 mm (w/h/d) Weight6.2 kg Remote control c
6、apability IR Station preset capacitymax. 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. RadioFans.CN 收音机爱 好者资料库 2
7、TABLE OF CONTENTS SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
8、PUBLISHED BY SONY. 1.GENERAL3 2.TEST MODE 12 3.ELECTRICAL ADJUSTMENTS 14 4.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
9、 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
10、.EXPLODED VIEWS 34 5-1. FRONT PANEL SECTION 34 5-2. MAIN SECTION 35 6.ELECTRICAL PARTS LIST 36 SERVICE POSITION The service position of the MAIN board is the state in which the back-panel is removed and the MAIN board is swing-raised by 90 . (An insulating material is necessary to prevent the machin
11、e from shorting.) Insulating material MAIN board RadioFans.CN 收音机爱 好者资料库 3 SECTION 1 GENERAL FRONT PANEL REAR PANEL 1234 8 765 9 qdqa 0qsqf qg 1 2 345678 1?/1 switch 2DAB button 3FM button 4AM button 5TUNING MODE button 6PTY button 7TUNING/SELECT button 8MENU button 9ENTER button 0MEMORY button qaCH
12、ARACTER button qsMONO/SC button qdDISPLAY MODE button qfEON button qgDISPLAY button 1DAB RDI OUT OPTICAL jack 2DAB DIGITAL OUT COAXIAL jack 3DAB DIGITAL OUT OPTICAL jack 4ANTENNA DAB jack 5ANTENNA FM jack 6ANTENNA AM terminal 7ANALOG OUT jack 8POWER cord 4 This section is extracted from instruction
13、manual. 5 6 7 8 9 10 11 12 2. Entering the Factory Preset (In case perform just to write memory of the Factory Preset.) 1.Turn OFF the power. 2.While pressing ENTER and DAB together, turn ON POWER . 3. Microprocessor Version Display Mode 1.Turn off the power. 2.While pressing MENU and AM together, t
14、urn ON POWER . 3.The version and the date of the microprocessor are displayed. 4.Press the ENTER button to end this mode. SECTION 2 TEST MODE DAB FM AM 1. Display Tube Check and KEY Check mode 1.Turn OFF the power. 2.While pressing DISPLAY and MENU together, turn ON POWER . 3.Display tube all lit. 4
15、.Each time the button is pressed, the key number is counted down. After all the 14 buttons are pressed, “OK” appears. When the DAB, FM or AM button is pressed only, the following display appears. 5.The two eighth notes are moved from the left to the right by turning the TUNING/SELECT dial clockwise.
16、 The notes are moved from the right to the left by turning the dial counterclockwise. 13 DAB error rate display Press DAB and CHARACTER at the same time under the DAB tuned condition. (When the software version is 1.04, press DAB ten times while CHARACTER is kept pressed.) The bit error rate is disp
17、layed. 1: PIC error rate 2: MSC error rate 3: Bit rate 4: In case of audio service F : 48 kHz sampling H : 24 kHz sampling In case of data service S : stream data F : FIDC P : pocket data 5: DAB decoder status information Check the contents in binary notation. Bit 7: not used Bit 6: 1 when AFC is co
18、nverged. Bits 5 to 3 : The number of CRC errors during MPEG decode Bit 2: 1 when initial pulling-in is complete. Bits 1, 0: Contents of DAB frame length judgment Audio information display (DAB only) Press DISPLAY and ENTER at the same time under the DAB tuned condition. Audio information for service
19、 that is selected at present is displayed. 1: Bit rate 2: Audio contents stereo= stereo broadcast joint= joint stereo broadcast dual= dual channel broadcast single= single channel broadcast stream = stream data broadcast FIDC= FIDC data broadcast Packet= packet data broadcast 3: Sampling frequency 4
20、: Protection level 5: Transmission mode 2 5 6 k b p s 4 8 k H z s t e r e o P L v 2 m o d e 1 1 345 2 F : 0 . 0 0 E + 0 0 M : 0 . 0 0 E + 0 0 2 5 6 F S T : C 5 1 5 4 2 3 Bit 1 0 0 1 1 Frame length 96 ms 48 ms 24 ms Judgment impossible Bit 0 1 0 0 1 14 FM Discriminator ADJUSTMENT (NULL and MONO Disto
21、rtion Adjustment) Setting: Procedure: 1.Tune the set to 98 MHz. 2.Adjust IFT202 for 0V reading on the digital voltmeter. . NULL 3.Adjust IFT203 for a minimum reading on the distortion meter. . MONO Distortion (THD) 4.Repeat the adjustments of 2 and 3 several times. Note : When replacing the ceramic
22、filter, perform this alignment. SECTION 3 ELECTRICAL ADJUSTMENTS Precautions in Repairing If the front end unit fails, it is difficult to repair the inner circuits, so replace the entire front end unit. Standard Setting of FM Stereo RF Signal Generator. FM SECTION0dB = 1V set FM RF SSG 1kHz highpass
23、 filter distortion meter FM ANTENNA (75)LINE OUT STEREO STANDARD SIGNAL MONAURAL STANDARD SIGNAL Carrier frequency : 98MHz Modulation : Audio 1kHz Main channel (L+R) : 33.75kHz deviation Sub channel (LR): 33.75kHz deviation Pilot: 7.5kHz Deviation Carrier frequency : 98MHz Modulation : Audio 1kHz 75
24、kHz deviation set FM RF SSG 1kHz highpass filter distortion meter FM ANTENNA (75) Modulation : Monaural Standard signal Output level : 6mV (76dB) (at 75 open) LINE OUT Digital Voltmeter (DC range) TP201 NULL terminal All the settings are performed in the Factory Preset state. (Refer to page 13.) 15
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- Sony ST D777ES Service Manual 电路 原理图