Sony str da 90 esg service manual
This is the 71 pages manual for sony str da 90 esg service manual.
Read or download the pdf for free. If you want to contribute, please upload pdfs to audioservicemanuals.wetransfer.com.
Extracted text from sony str da 90 esg service manual (Ocr-read)
Page 1
Ð 2 Ð Digital Signal Processor section Modulation High Density Linear (A/D conversion) Converter Demodulation High Density Linear (D/A conversion) Converter (Advanced Pulse D/A converter) Sampling 48 kHz frequency Surround LFE MIX MUTE, Ð20 ~ 0 dB, 0.5 dB step D.RANGE COMP OFF, 0.1 ~ 0.9, STD, MAX REAR level Ð20 ~ +10 dB, 0.5 dB step CENTER level Ð20 ~ +10 dB, 0.5 dB step SUB WOOFER level Ð20 ~ +10 dB, 0.5 dB step WALL 17-step adjustable SEAT L/R 17-step adjustable F/R 17-step adjustable EFFECT 21-step adjustable REVERB time 17-step adjustable Equalizer Band BASS/TREBLE Turnover frequency BASS: 99 Hz ~ 992 Hz TREBLE: 1.0 kHz ~ 8.6 kHz Level ±10 dB, 0.5 dB step +0.5 Ð2 FM tuner section Tuning range 87.5 - 108.0 MHz Antenna 75 ohms, unbalanced terminals Sensitivity Mono: 18.3 dBf, 4.5 µV Stereo: 38.3 dBf, 45 µV Usable sensitivity 11.2 dBf, 2 µV (IHF) S/N Mono: 76 dB Stereo : 70 dB Harmonic Mono: 0.3 % distortion at Stereo: 0.5 % 1 kHz Separation 45 dB at 1 kHz Frequency 30 Hz - 15 kHz dB response Selectivity 60 dB at 400 kHz AM tuner section Tuning range With 10 kHz interval*: 530 - 1710 kHz US, Canadian model With 9 kHz interval: 531 - 1710 kHz US, Canadian model 531 - 1602kHz Australian model Antenna Loop antenna Usable sensitivity 50 dB/m (at 1,000 kHz or 999 kHz) S/N 54 dB (at 50 mV/m) Harmonic 0.5 % (50 mV/m, distortion 400 kHz) Selectivity At 9 kHz: 35 dB At 10 kHz: 40 dB * You can change the AM tuning interval be- tween 9 kHz and 10 kHz. After tuning in any AM station, turn off the receiver. While hold- ing down the PRESET + button, press the POWER switch. When you change the inter- val, all the preset stations will be erased. To reset the interval, repeat the same procedure. US, Canadian modelVideo 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 System Tuner section: PLL quartz-locked digital synthesizer sys- tem Preamplifier section: Low-noise NF type equalizer Power amplifier section: Pure-complimentary Parallel P.P. Power Australian models: requirements 240 V AC, 50 Hz US, Canadian models: 120 V AC, 60 Hz Power Australian models: 430 W consumption US models: 385 W Canada models: 550 VA AC outlets Australian models: 1 switched, total 100 W US, Canadian models: 2 switched, total 120 W Dimensions 430 ´ 160 ´ 435 mm (17 ´ 6 3/8 ´ 17 1/4 inches) Mass (Approx.) 16.0 kg (35 lb 4 oz) Supplied ¥ FM wire antenna (1) accessories ¥ AM loop antenna (1) ¥ Remote commander (remote) (1) (remote for US and Canadian models: RM-H501) (Remote for Australian model: RM-VR101) ¥ Size AA (R6) batteries (2) ¥ IR repeater (1) Design and specifications are subject to change without notice.
Page 2
Ð 3 Ð TABLE OF CONTENTS 1. GENERAL ................................................................... 4 2. DISASSEMBLY .......................................................... 5 3. ELECTRICAL ADJUSTMENTS ......................... 7 4. DIAGRAMS 4-1. IC Pin Function Description ............................................ 9 4-2. Printed Wiring Boards Ð DISPLAY Section Ð ................ 27 4-3. Schematic Diagram Ð DISPLAY Section Ð .................... 31 4-4. Schematic Diagram Ð VIDEO Section Ð ......................... 36 4-5. Printed Wiring Boards Ð VIDEO Section Ð .................... 41 4-6. Schematic Diagram Ð INPUT/TUNER/POWER Section Ð ............................. 45 4-7. Printed Wiring Boards Ð INPUT/TUNER/POWER Section Ð ............................. 49 4-8. Schematic Diagram Ð DIGITAL Section Ð ...................... 54 4-9. Printed Wiring Board Ð DIGITAL Section Ð .................. 59 4-10. Schematic Diagram Ð AMP/OUTPUT Section Ð ............ 63 4-11. Printed Wiring Boards Ð AMP/OUTPUT Section Ð ....... 67 5. EXPLODED VIEWS ................................................ 75 6. ELECTRICAL PARTS LIST ................................ 79 SAFETY-RELATED COMPONENT WARNING!! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! 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 Ë LA SƒCURITƒ! LES COMPOSANTS IDENTIFIƒS PAR UNE MARQUE ! SUR LES DIAGRAMMES SCHƒMATIQUES ET LA LISTE DES PIéCES SONT CRITIQUES POUR LA SƒCURITƒ DE FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS QUE PAR DES PIéCES SONY DONT LES NUMƒROS SONT DONNƒS DANS CE MANUEL OU DANS LES SUPPLƒMENTS PUBLIƒS PAR SONY. MODEL IDENTIFICATION Ð BACK PANEL Ð US Model : 0 ¹ Canadian Model : 1 ¹ Australian Model : 2 ¹ 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, ÒmetallizedÓ 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 microampers.). 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 manufacturersÕ 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 ÒlimitÓ indica- tion is 0.75 V, so analog meters must have an accurate low- voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex- amples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2 V AC range are suit- able. (See Fig. A) Fig. A. Using an AC voltmeter to check AC leakage. 1.5 k W 0.15 µF AC voltmeter (0.75 V) To Exposed Metal Parts on Set Earth Ground 4-991-373-