Sony str k 880 k900 v1 1 service manual
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Extracted text from sony str k 880 k900 v1 1 service manual (Ocr-read)
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2 STR-K880/K900 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. UNLEADED SOLDER Boards requiring use of unleaded solder are printed with the lead- free mark (LF) indicating the solder contains no lead. (Caution: Some printed circuit boards may not come printed with the lead free mark due to their particular size) : LEAD FREE MARK Unleaded solder has the following characteristics. - Unleaded solder melts at a temperature about 40 °C higher than ordinary solder. Ordinary soldering irons can be used but the iron tip has to be applied to the solder joint for a slightly longer time. Soldering irons using a temperature regulator should be set to about 350 °C. Caution: The printed pattern (copper foil) may peel away if the heated tip is applied for too long, so be careful! - Strong viscosity Unleaded solder is more viscou-s (sticky, less prone to flow) than ordinary solder so use caution not to let solder bridges occur such as on IC pins, etc. - Usable with ordinary solder It is best to use only unleaded solder but unleaded solder may also be added to ordinary solder. MODEL IDENTIFICATION – Rear Panel – Model Part No. US model 2-663-098-0 [] Canadian model 2-663-098-1[] AEP, UK models 2-663-098-2[] E51 model 2-663-098-3[] SP, SP6 models 2-663-098-4[] AUS model 2-663-098-5 [] Parts No. -Abbreviation AU S: Australian model CND : Canadian model E51 : Chilean and Peruvian models SP : Singapore model SP6 : Singapore and Malaysia models Reproduction frequency range 28 - 20,000 Hz T one FM tuner sectionTun i ng range 87.5 - 108.0 MHz Ante nna FM wire antenna Ante nna terminals 75 ohms, unbalanced Intermediate frequency 10.7 MHz AM tuner sectionTun i ng ra nge Models of area code US, CND With 10-kHz tuning scale: 530 – 1,710 kHz 3) With 9- kHz tuning scale: 531 – 1,710 kHz 3) Antenna Loop antenna Intermediate frequency 4 50 kHz 3)Yo u c a n change th e AM tuning scale to 9 kHz or 10 kHz. After tuning in any AM station, turn off the receiver. While holding down TUNING MODE, press ?/1. All preset stations will be erased when you change the tuning scale. To reset th e scale to 10 kHz (or 9 kHz), repeat the procedure. Video sectionInputs/Outputs Vid e o: 1 Vp-p, 75 ohms COMPONENT VIDEO: Y: 1 V p - p, 75 ohms P B/CB/B-Y: 0.7 Vp-p, 75 ohms P R/CR/R-Y: 0.7 Vp-p, 75 ohms 80 MHz HD Pass Through Gain levels ±6 dB, 1 dB step GeneralPower requirements Power consumption Power consumption (during standby mode) 0.2 W Dimensions (w/h/d) (Approx.) 430 157.5 316 mm ( 167 /8 62 /8 124/ 8 inc hes) including projecting parts and controls Mass (App rox.) 8.0 kg (17 lb 11 oz) Area code Power requirements US, CND 120 V AC, 60 Hz Area code Power consumption US 170 W CND 230 VA Mo dels of area code E51 With 10-kHz tuning scale: 530 – 1,610 kHz 3) With 9-kHz tuning scale: 531 – 1,602 kHz 3) Models of area code AEP, UK, AUS, SP, SP6 With 9- kHz tuning scale: 531 – 1,602 kHz Antenn aL oop antenna Intermediate frequency 450 kHz AEP, UK 230 V AC, 50/60 Hz AUS 2 40 V AC, 50 Hz SP, SP6 230 – 240 V AC, 50/ 60 Hz E51 1 20/220/240 V AC, 50/ 60 Hz AEP, UK, AUS, SP, SP6, E51 2 00 W × ×× × Design and specifications are subject to change without notice. Ve r. 1.1
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3 STR-K880/K900 TABLE OF CONTENTS 1. GENERAL ................................................................... 4 2. TEST MODE ............................................................... 12 3. DIAGRAMS ................................................................. 14 3-1. Block Diagram – MAIN Section – .................................. 16 3-2. Block Diagram – DISPLAY/POWER Section – ............. 17 3-3. Printed Wiring Board – DIGITAL Board (Side A) – ....... 18 3-4. Printed Wiring Board – DIGITAL Board (Side B) – ....... 19 3-5. Schematic Diagram – DIGITAL Board (1/5) – ............... 20 3-6. Schematic Diagram – DIGITAL Board (2/5) – ............... 21 3-7. Schematic Diagram – DIGITAL Board (3/5) – ............... 22 3-8. Schematic Diagram – DIGITAL Board (4/5) – ............... 23 3-9. Schematic Diagram – DIGITAL Board (5/5) – ............... 24 3-10. Printed Wiring Board – MAIN Board – .......................... 25 3-11. Schematic Diagram – MAIN Board (1/3) – .................... 26 3-12. Schematic Diagram – MAIN Board (2/3) – .................... 27 3-13. Schematic Diagram – MAIN Board (3/3) – .................... 28 3-14. Printed Wiring Boards – DISPLAY Board, POWER Board – ............................. 29 3-15. Schematic Diagrams – DISPLAY Board, POWER Board – ............................. 30 3-16. Printed Wiring Boards – STANDBY Board, AC SELECT Board – .................... 31 3-17. Printed Wiring Board – SPEAKER Board – ................... 32 3-18. Schematic Diagram – SPEAKER Board, STANDBY Board, AC SELECT Board – ....................... 33 3-19. Printed Wiring Board – SPEAKER B Board – ............... 34 3-20. Printed Wiring Boards – ADCC Board, VIDEO 3 Board – ................................. 35 3-21. Schematic Diagrams – SPEAKER B Board, ADCC Board, VIDEO 3 Board – .................................... 36 3-22. Printed Wiring Boards – VIDEO Board, HEADPHONE Board – ....................... 37 3-23. Schematic Diagram – VIDEO Board, HEADPHONE Board – ....................... 38 3-24. Printed Wiring Board – HDMI Board – .......................... 39 3-25. Schematic Diagram – HDMI Board – ............................. 40 4. EXPLODED VIEWS 4-1. Front Panel Section ......................................................... 49 4-2. Chassis Section-1 ............................................................ 50 4-3. Chassis Section-2 ............................................................ 51 5. ELECTRICAL PARTS LIST .................................. 52 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) Fig. A. Using an AC voltmeter to check AC leakage. 1.5 k Ω 0.15 µF AC voltmete r (0.75 V) To Exposed Metal Parts on Set Earth Ground 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 PA RT 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 FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS Q UE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY. About area codes Th e area code of the receiver you purchased is shown on the lower right portion of the rear panel (see the illustration below). Any differences in operation, according to the area code, are clearly indicated in the text, for example, Models of area code AA only. SPEAKERSFRONT B L R L R CENTER SURROUND BACK SURROUND FRONT A R R L L +–+– SPEAKERS +– Area code