Sony-STRDE1075-rec-sm维修电路原理图.pdf
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 Surround 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 POWER 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 Output 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 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 bypassed) 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 OUT) 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 (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 Harmonic 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 (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 will 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 requirements120 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 (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 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 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 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 safety 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 metal 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. 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. The 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 board, 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 AMP 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 Board (3/5) . 23 6-11. Schematic Diagram DIGITAL Board (4/5) . 24 6-12. Schematic Diagram DIGITAL Board (5/5) . 25 6-13. Printed Wiring Board DIGITAL Board (Component Side) . 26 6-14. Printed Wiring Board DIGITAL Board (Conductor Side) . 27 6-15. Printed Wiring Board VIDEO Board . 28 6-16. Schematic Diagram VIDEO Board . 29 6-17. Printed Wiring Boards S-VIDEO/VIDEO AU Boards . 30 6-18. Schematic Diagram S-VIDEO/VIDEO AU Boards . 31 6-19. Printed Wiring Board MAIN Board . 32 6-20. Schematic Diagram MAIN Board (1/3) . 33 6-21. Schematic Diagram MAIN Board (2/3) . 34 6-22. Schematic Diagram MAIN Board (3/3) . 35 6-23. Printed Wiring Board BIAS Board . 36 6-24. Schematic Diagram BIAS Board . 37 6-25. Printed Wiring Board DISP Board . 38 6-26. Schematic Diagram DISP Board . 39 6-27. Printed Wiring Boards H.P/JOG/POWER/SP/VIDEO 3/VOL Boards . 40 6-28. Schematic Diagram H.P/JOG/POWER/SP/VIDEO 3/VOL Boards . 41 6-29. Printed Wiring Boards POWER SUPPLY Section . 42 6-30. Schematic Diagram POWER SUPPLY Section . 43 6-31. IC Pin Function Description . 49 7.EXPLODED VIEWS 7-1.Case Section . 61 7-2.Front Panel Section . 62 7-3.Chassis Section-1 . 63 7-4.Chassis Section-2 . 64 8.ELECTRICAL PARTS LIST. 65 Ver 1.2 4 STR-DE1075 SERVICE POSITION In checking the DIGITAL board, prepare jig (extension cable J-2501-208-A: 200 mm 21 core). SECTION 1 SERVICING NOTES MAIN board DIGITAL board Connect jig (extension cable J-2501-208-A) to the MAIN board (CN806, 807) and DIGITAL board (CN1102, 1103). 5 STR-DE1075 SECTION 2 GENERAL This section is extracted from instruction manual. LOCATION OF CONTROLS Front Panel 2ND ROOM wf (25) 6.1CH DECODING wa (29) 6.1CH DECODING indicator ql (29) AM eh (36) CINEMA STUDIO EX AC qh (26) DIGITAL CONCERT HALL A, B w; (27) Cursor buttons (/) ef (17, 31, 33, 34, 38, 40) Digital Cinema Sound indicator qk (26) DIMMER 5 (25) DIMMER indicator 8 (25) Display qj (30) DISPLAY 4 (25) ENTER ed (38) EQ 0 (34) EQUALIZER wk (34) FM ej (36) FM MODE ek (36) FUNCTION wg (22, 23, 3638) INPUT MODE wj (23) IR receptor 6 Jog dial eg (17, 31, 33, 34, 38, 40) LEVEL qs (33) MASTER VOLUME wd (21, 24) MEMORY r; (37) MODE wh (23) MULTI /2CH A. DIRECT wl (24, 28) MULTI CHANNEL DECODING indicator qd MUTING ws (24) NAME qg (38) ON SCREEN ra (8) PHONES jack 3 (24) PRESET TUNING +/ 7 (37) SET UP qf (17, 40) SHIFT el (37) SOUND FIELD 2CH e; (28) SOUND FIELD A.F.D. es (28) SOUND FIELD MODE ea (26, 35) SPEAKERS switch 2 (24) SURR qa (31) TUNING +/ 9 (36) VIDEO 3 INPUT jacks rs (8) ?/1 (power) 1 (16, 21, 22, 35) wfwhwgwkeaeswle;wj 123qh4qs8590qaqdqfqgqjqkqlw;wa wswd67 edrsejekelr;efegehra Rear Panel 712 3 456890 qa qsqdqfqhqgqj qkql 1 DIGITAL jack 2 ANTENNA terminal 3 CONTROL A1 II jack 4 MONITOR jack 5 TV/SAT jack 6 DVD/LD jack 7 VIDEO 2 jack 8 VIDEO 1 jack 9 SPEAKERS terminal 0 AUDIO OUT jack qa INPEDANCE SELECTOR qs MULTI CH IN 2 jack qd MULTI CH IN 1 jack qf PHONO jack qg CD/SACD jack qh MD/DAT jack qj TAPE jack qk 2ND ROOM jack ql AC OUTLET STR-DE1075 6 This set can be disassembled in the order shown below. 3-1.DISASSEMBLY FLOW SECTION 3 DISASSEMBLY SET 3-3. S-VIDEO BOARD, VIDEO BOARD, TUNER (Page 7) 3-2. CASE (Page 7) 3-5. DIGITAL BOARD (Page 8) 3-6. MAIN BOARD (Page 9) 3-4. VIDEO AU BOARD (Page 8) STR-DE1075 7 Note: Follow the disassembly procedure in the numerical order given. 3-2.CASE 1two screws (case 3 TP2) 1two screws (case 3 TP2) 3case 2 2 1two screws (case 3 TP2) 3-3.S-VIDEO BOARD, VIDEO BOARD, TUNER 2connector (CN306) 1connector (CN753) 5S-VIDEO board, VIDEO board 7three screws (BVTP3 8) 4six screws (BVTP3 8) 3wire (flat type) (21 core) (CN303) 6wire (flat type) (15 core) (CN1) 8tuner STR-DE1075 8 3-4.VIDEO AU BOARD 3-5.DIGITAL BOARD 2two screws (BVTP3 8) 3VIDEO AU board 1wire (flat type) (9 core) (CN201) 3two screws (BVTP3 8) 2connector (CN1107) 2connector (CN1106) 2connector (CN1108) 1wire (flat type) (29 core) (CN1101) 6DIGITAL board 5two connectors (CN1102, 1103) 4five screws (BVTP3 8) STR-DE1075 9 3-6.MAIN BOARD 3screw (BVTP3 8) 5 3screw (BVTP3 8) 4eight screws (BVTP3 8 TYPE 2 IT-3) 2two screws (BVTP3 8) 2two screws (BVTP3 8) 1connector (CN803) 1connector (CN802) 1connector (CN805) 1connector (CN804) 8two screws (BVTP3 8) 9MAIN board 7twelve screws (transistor) 6connector (CN810) 6six connectors (CN501, 551, 451, 401, 601, 651) 10 STR-DE1075 SECTION 4 TEST MODE Factory Set Mode All preset contents are reset to the default setting. Procedure: While pressing the SET UP and DIMMER buttons, press the ?/1button to turn on the main power. The message “TUNER FACTORY PRESET” appears and the present contents are reset to the default values. All Clear Mode All preset contents are cleared when this mode is activated. Use this mode before returning the product to clients upon completion of repair. Procedure: While pressing the A.F.D. and SOUND FIELD MODE buttons, press the?/1button to turn on the main power. The message “MEMORY CLEAREDd” appears and the memories are reset to the default values. Sound Field Clear Mode The preset sound field is cleared when this mode is activated. Use this mode before returning the product to clients upon completion of repair. Procedure: While pressing the SOUND FIELD MODE button, press the ?/1button to turn on the main power. The message “S.F Initialize” appears and initialization is performed. Fluorescent Indicator Tube Test Mode All fluorescent segments are tested. When this test is activated, all segments turn on at the same time, then each segment turns on one after another. Procedure: 1.While pressing the A.F.D. and DIMMER buttons, press the?/1button to turn on the main power. 2.All segments turn on at the same time, then each segment turns on press the A.F.D. button. Demonstration Mode Procedure: While pressing the SET UP button simultaneously, press the ?/1 button to turn on the main power. The set enters the DEMO mode. Wait a while, then the demonstration starts. If the?/1button is pressed often the demonstration has started, the power is turned off, and the demonstration resumes if the?/1button is pressed again. AM Channel Step 9 kHz/10 kHz Selection Mode Either the 9 kHz step or 10 kHz step can be selected for the AM channel step. Procedure: 1.Set the FUNCTION to AM. Press the?/1button to turn off the main power. 2.While depressing the PRESET TUNING + button, press the ?/1button to turn on the main power. 3.Either the message “AM 9kHz Step” or “AM 10kHz Step” appears. Select the desired step. Version Mode When this mode is used, the microprocessor version number is displayed. Procedure: Press three buttons of SHIFT, SOUND FIELD MODE and TUNING - simultaneously. The microprocessor version number appears. DSP Test Mode This test is conducted to check if the DSP functions normally. Procedure: 1.While pressing the DISPLAYand TUNING + buttons, press theI/1button to turn on the main power. 2.If the DSP is no
