Sony sa wx 90 service manual
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Extracted text from sony sa wx 90 service manual (Ocr-read)
Page 1
2 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. TABLE OF CONTENTS 1. GENERAL ........................................................................\ .... 3 2. DIAGRAMS 2-1. Note for Printed Wiring Board and Schematic Diagram ...... 3 2-2. Printed Wiring Board ............................................................ 4 2-3. Schematic Diagram ............................................................... 5 3. EXPLODED VIEW 3-1. Cabinet Section ..................................................................... 6 4. ELECTRICAL PARTS LIST .......................................... 6
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33 SECTION 2 DIAGRAMS - Location of controls Note on Printed Wiring Board: - X : parts extracted from the component side. - Y : parts extracted from the conductor side. - b : Pattern from the side which enables seeing. Note on Schematic Diagram: - All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. - All resistors are in Ω and 1/4 W or less unless otherwise specified. - C : panel designation. - U : B+ Line. - V : B– Line. - Voltages are dc with respect to ground under no-signal conditions. no mark : Power on ∗ : Impossible to measure - Voltages are taken with a VOM (Input impedance 10 M Ω). Voltage variations may be noted due to normal produc- tion tolerances. - Signal path. F : AUDIO - Abbreviation G : German model MY : Malaysia model SP : Singapore model - Circuit Boards Location Note: The components identified by mark \b or dotted line with mark \b are critical for safety. Replace only with part number specified. 2-1. NOTE FOR PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM MAIN board POWER SW CE board (not supplied) CONTROL board (not supplied) POWER SUPPLY board (not supplied) TRANS (SEC) board (not supplied) TRANS (PRI) board (not supplied) POWER (IC) board (not supplied) – Front View (a part) – SECTION 1 GENERAL – Upper View (a part) – – Rear View (a part) – POWER POWER indicator LEVEL PHASE CUT OFF FREQ LEVEL MIN MAX CUT OFF FREQ 50Hz PHASE 120Hz REVERSENORMAL LINE IN SPEAKER OUT LINE OUT SPEAKER IN POWER SAVE IN OUT IN OUT OFF AUTOLINE L SPEAKER POWER SAVE R L R