Sony str dh 540 service manual
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Page 1
STR-DH540 2 1) Measured under the following conditions: Area Power requirements US, CND 120 V AC, 60 Hz AEP, UK, AUS 230 V AC, 50 Hz 2) Reference power output for front, center and surround speakers. Depending on the sound field settings and the source, there may be no sound output. Frequency response Analog 10 Hz – 100 kHz, +0.5/–2 dB (with sound fi eld and equalizer bypassed) Input Analog Sensitivity: 500 mV/50 kilohms S/N 3): 105 dB (A, 500 mV 4)) Digital (Coaxial) Impedance: 75 ohms S/N: 100 dB (A, 20 kHz LPF) Digital (Optical) S/N: 100 dB (A, 20 kHz LPF) Output (Analog) SUBWOOFER Voltage: 2 V/1 kilohm Equalizer Gain levels ±10 dB, 1 dB step 3) INPUT SHORT (with sound field and equalizer bypassed). 4) Weighted network, input level. FM tuner section Tuning range 87.5 MHz – 108.0 MHz Antenna (aerial) FM wire antenna (aerial) Antenna (aerial) terminals 75 ohms, unbalanced AM tuner section Tuning range Area Tuning scale 10 kHz step 9 kHz step US, CND 530 kHz – 531 kHz – 1,710 kHz 1,710 kHz AEP, UK, AUS – 531 kHz – 1,602 kHz Antenna (aerial) Loop antenna (aerial) Video section Inputs/Outputs Video: 1 Vp-p, 75 ohms iPod/iPhone section DC 5V 1.0 A MAX USB section Supported format* MP3 (MPEG 1 Audio Layer-3): 32 kbps – 320 kbps, VBR WMA: 48 kbps – 192 kbps AAC: 48 kbps – 320 kbps WAV: 8 kHz – 48 kHz 16 bit PCM * Compatibility with all encoding/writing software, recording devices an\ d recording media cannot be guaranteed. Transfer speed Full-speed Supported USB device Mass Storage Class Maximum current 500 mA General Power requirements Area Power requirements US, CND 120 V AC, 60 Hz AEP, UK 230 V AC, 50/60 Hz AUS 230 V AC, 50 Hz Power consumption 200 W Power consumption (during standby mode) 0.3 W (When Control for HDMI and Pass Through are set to Off.) Dimensions (width/height/depth) (Approx.) 430 mm × 156 mm × 329.4 mm (17 in × 6 1/4 in × 13 in) including projecting parts and controls Mass (Approx.) 7.7 kg (16 lb 16 oz) Design and speci fications are subject to change without notice. Supplied accessories - Operating Instructions - Quick Setup Guide (1) - Remote control (RM-AAU168) (1) - R6 (size AA) batteries (2) - FM wire antenna (aerial) (1) - AM loop antenna (aerial) (1) - Optimizer microphone (ECM-AC2) (1) Design and speci fications are subject to change without notice. - Halogenated flame retardants are not used in the certain printed wiring boards. Abbreviation AUS : Australian model CND : Canadian model Ve r. 1 . 1
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STR-DH540 3 SAFETY CHECK-OUT After correcting the original service problem, perform the following 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 passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2 V AC range are suitable. (See Fig. A) 1.5 kΩ 0.15 μF AC voltmeter (0.75 V) To Exposed Metal Parts on Set Earth Ground Fig. A. Using an AC voltmeter to check AC leakage. Notes on chip component replacement - Never reuse a disconnected chip component. - Notice that the minus side of a tantalum capacitor may be damaged by heat. 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 PUBLISHED BY SONY. ATTENTION AU COMPOSANT AYANT RAPPORT À LA SÉCURITÉ! LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONC- TIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DON- NÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY. 1. SERVICING NOTES ............................................. 4 2. DISASSEMBLY 2-1. Case (Entry) .................................................................... 5 2-2. Front Panel Section ......................................................... 6 2-3. DCDC Board, STANDBY Board ................................... 7 2-4. Back Panel Section ......................................................... 8 2-5. MAIN Board Section ...................................................... 8 2-6. MAIN Board ................................................................... 9 3. TEST MODE ............................................................ 10 4. FM TUNER CHECK ............................................. 13 5. DIAGRAMS 5-1. Block Diagram - ANALOG AUDIO Section - ............... 15 5-2. Block Diagram - DIGITAL Section -.............................. 16 5-3. Block Diagram - AMP Section - ..................................... 17 5-4. Block Diagram - ANALOG VIDEO/USB Section - ...... 18 5-5. Block Diagram - DIGITAL VIDEO Section - ................ 19 5-6. Block Diagram - DISPLAY/POWER Section - .............. 20 5-7. Printed Wiring Board - DIGITAL Board (Component Side) - ........................... 22 5-8. Printed Wiring Board - DIGITAL Board (Conductor Side) - ............................. 23 5-9. Schematic Diagram - DIGITAL Board (1/7) - ................ 24 5-10. Schematic Diagram - DIGITAL Board (2/7) - ................ 25 5-11. Schematic Diagram - DIGITAL Board (3/7) - ................ 26 5-12. Schematic Diagram - DIGITAL Board (4/7) - ................ 27 5-13. Schematic Diagram - DIGITAL Board (5/7) - ................ 28 5-14. Schematic Diagram - DIGITAL Board (6/7) - ................ 29 5-15. Schematic Diagram - DIGITAL Board (7/7) - ................ 30 5-16. Printed Wiring Board - MAIN Board (Component Side) - ................................ 31 5-17. Printed Wiring Board - MAIN Board (Conductor Side) - .................................. 32 5-18. Schematic Diagram - MAIN Board (1/4) - ..................... 33 5-19. Schematic Diagram - MAIN Board (2/4) - ..................... 34 5-20. Schematic Diagram - MAIN Board (3/4) - ..................... 35 5-21. Schematic Diagram - MAIN Board (4/4) - ..................... 36 5-22. Printed Wiring Board - DISPLAY Board - ..................... 37 5-23. Schematic Diagram - DISPLAY Board - ........................ 38 5-24. Printed Wiring Board - DCDC Board - .......................... 39 5-25. Schematic Diagram - DCDC Board - ............................. 40 5-26. Printed Wiring Board - STANDBY Board - ................... 41 5-27. Schematic Diagram - STANDBY Board - ...................... 42 5-28. Printed Wiring Board - FRONT JACK PWB Board - ....................................... 43 5-29. Schematic Diagram - FRONT JACK PWB Board - ....... 43 5-30. Printed Wiring Board - TUNER1 Board - ...................... 43 5-31. Schematic Diagram - TUNER1 Board - ......................... 44 5-32. Printed Wiring Board - POWER KEY Board -............... 45 5-33. Schematic Diagram - POWER KEY Board - ................. 45 5-34. Printed Wiring Board - HEADPHONE Board - ............. 45 5-35. Schematic Diagram - HEADPHONE Board - ................ 45 6. EXPLODED VIEWS 6-1. Case (Entry) Section ....................................................... 61 6-2. DCDC Board Section ...................................................... 62 6-3. Front Panel Section ......................................................... 63 6-4. Back Panel Section ......................................................... 64 6-5. Chassis Section ............................................................... 65 7. ELECTRICAL PARTS LIST .............................. 66 TABLE OF CONTENTS