Sony-STRDE1075-rec-sm维修电路原理图.pdf
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1、SERVICE MANUAL FM STEREO/FM-AM RECEIVER US Model Canadian Model SPECIFICATIONS STR-DE1075 Ver 1.2 2001.11 9-873-841-13Sony Corporation 2001K0500-1Home Audio Company C 2001.11Published by Sony Engineering Corporation Continued on next page This receiver incorporates Dolby* Digital and Pro Logic Surro
2、und and the DTS* Digital Surround System. * Manufactured under license from Dolby Laboratories. “Dolby”, “Pro Logic” and the double-D symbol are trademarks of Dolby Laboratories. *“DTS” and “DTS Digital Surround” are registered trademarks of Digital Theater Systems, Inc. AUDIO POWER SPECIFICATIONS P
3、OWER OUTPUT AND TOTAL HARMONIC DISTORTION: With 8 ohm loads, both channels driven, from 20 20,000 Hz; rated 100 watts per channel minimum RMS power, with no more than 0.09 % total harmonic distortion from 250 milliwatts to rated output (US model only). Amplifier section POWER OUTPUT Rated Power Outp
4、ut at Stereo Mode (8 ohms 20 Hz 20 kHz, THD 0.09 %) 100 W + 100 W Reference Power Output (8 ohms 1 kHz, THD 0.7 %) FRONT1):100 W + 100 W CENTER1): 100 W SURR1): 100 W + 100 W SURR BACK1): 100 W 1) Depending on the sound field settings and the source, there may be no sound output. Frequency response
5、PHONO CD/SACD, TAPE, MD/DAT, TV/SAT, DVD/LD, VIDEO 1, 2, 3 Inputs (Analog) PHONO MULTI CH IN (1, 2), CD/SACD, TAPE, MD/DAT, DVD/LD, TV/SAT, VIDEO 1, 2, 3 2) INPUT SHORT. 3) Weighted network, input level. RIAA equalization curve 0.5 dB 10 Hz 100 kHz 3 dB (with sound field, equalizer, and bass boost b
6、ypassed) Sensitivity: 2.5 mV Impedance: 50 kilohms S/N2): 86 dB (A, 2.5 mV3) Sensitivity: 150 mV Impedance: 50 kilohms S/N2): 96 dB (A, 150 mV3) RadioFans.CN 收音机爱 好者资料库 2 STR-DE1075 Inputs (Digital) DVD/LD (Coaxial) DVD/LD, TV/SAT, MD/DAT (Optical) Outputs TAPE, MD/DAT (REC OUT), VIDEO 1, 2 (AUDIO O
7、UT) FRONT L/R, CENTER, SURROUND L/R, SURROUND BACK, SUB WOOFER Sensitivity: Impedance: 75 ohms S/N: 100 dB (A, 20 kHz LPF) Sensitivity: Impedance: S/N: 100 dB (A, 20 kHz LPF) Voltage: 150 mV Impedance: 2.2 kilohms Voltage: 2 V Impedance: 2.2 kilohms EQ BASS:99 Hz1.0 kHz (21 steps) MID:198 Hz10 kHz (
8、37 steps) TREBLE:1.0 kHz10 kHz (23 steps) Gain levels:10 dB, 1 dB step FM tuner section Tuning range87.5 - 108.0 MHz Antenna terminals75 ohms, unbalanced Sensitivity Mono:18.3 dBf, 2.2 V/75 ohms Stereo:38.3 dBf, 22.5 V/75 ohms Usable sensitivity11.2 dBf, 1 V/75 ohms S/N Mono:76 dB Stereo:70 dB Harmo
9、nic distortion at 1 kHz Mono:0.3% Stereo:0.5% Separation45 dB at 1 kHz Frequency response30 Hz 15 kHz, +0.5/2 dB Selectivity60 dB at 400 kHz AM tuner section Tuning range With 10-kHz tuning scale: 530 1.710 kHz4) With 9-kHz tuning scale:531 1.710 kHz4) AntennaLoop antenna Usable sensitivity50 dB/m (
10、at 1,000 kHz or 999 kHz) S/N54 dB (at 50 mV/m) Harmonic distortion0.5 % (50 mV/m, 400 kHz) Selectivity At 9 kHz:35 dB At 10 kHz:40 dB 4) You can change the AM tuning scale to 9 kHz or 10 kHz. After tuning in any AM station, turn off the receiver. Hold down TUNING and press ?/1. All preset stations w
11、ill be erased when you change the tuning scale. To reset the scale to 10 kHz (or 9 kHz), repeat the procedure. Video section Inputs Video:1 Vp-p, 75 ohms S-video:Y: 1 Vp-p, 75 ohms C: 0.286 Vp-p, 75 ohms Outputs Video:1 Vp-p, 75 ohms S-video:Y: 1 Vp-p, 75 ohms C: 0.286 Vp-p, 75 ohms General Power re
12、quirements120 V AC, 60 Hz Power consumption300 W (US model) 375 VA (Canadian model) AC outlets2 switched, 120 W/1A Dimensions430 161 401 mm including projecting parts and controls Mass (Approx.)16.0 kg Supplied accessories FM wire antenna (1) AM loop antenna (1) Audio/video/control S connecting cord
13、 (1) Control S connecting cord (1) Remote commander RM-PP505L (1) R6 (size-AA) batteries (2) Design and specifications are subject to change without notice. RadioFans.CN 收音机爱 好者资料库 3 STR-DE1075 Fig. A.Using an AC voltmeter to check AC leakage. 1.5 k0.15 F AC voltmeter (0.75 V) To Exposed Metal Parts
14、 on Set Earth Ground ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFIS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS QUE PAR DES PICES SONY DONT LES NUMROS SONT DONNS DANS CE
15、 MANUEL OU DANS LES SUPPLMENTS PUBLIS PAR SONY. 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
16、THIS MANUAL OR IN SUPPLEMENTS PUB- LISHED BY SONY. Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be dam- aged by heat. SAFETY CHECK-OUT After correcting the original service problem, perform the follow- ing safet
17、y check before releasing the set to the customer: Check the antenna terminals, metal trim, “metallized” knobs, screws, and all other exposed metal parts for AC leakage. Check leakage as described below. LEAKAGE TEST The AC leakage from any exposed metal part to earth ground and from all exposed meta
18、l parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microamperes.). Leakage current can be measured by any one of three methods. 1.A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the manufacturers instructions to use these instruments
19、. 2.A battery-operated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job. 3.Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC voltmeter. The “limit” indication is 0.75 V, so analog meters must have an accurate low-voltage scale. T
20、he Simpson 250 and Sanwa SH-63Trd are examples of a pas- sive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2 V AC range are suitable. (See Fig. A) TABLE OF CONTENTS 1.SERVICING NOTES.4 2.GENERAL.5 3.DISASSEMBLY 3-1.Disassembly Flow .6 3-2.Case .7 3-3.S-VIDEO boar
21、d, VIDEO Board, Tuner.7 3-4.VIDEO AU Board .8 3-5.DIGITAL Board .8 3-6.MAIN Board .9 4.TEST MODE. 10 5.ELECTRICAL ADJUSTMENT. 11 6.DIAGRAMS 6-1.Block Diagram TUNER/VIDEO INPUT Section . 13 6-2.Block Diagram AUDIO DSP Section . 14 6-3.Block Diagram AUDIO CONTROL Section . 15 6-4.Block Diagram POWER A
22、MP Section . 16 6-5.Block Diagram DISPLAY/KEY CONTROL Section . 17 6-6.Block Diagram POWER SUPPLY Section . 18 6-7.Note for Printed Wiring Boards and Schematic Diagrams . 19 6-8.Schematic Diagram DIGITAL Board (1/5) . 21 6-9.Schematic Diagram DIGITAL Board (2/5) . 22 6-10. Schematic Diagram DIGITAL
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