Sony tc we 675 service manual
This is the 51 pages manual for sony tc we 675 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 tc we 675 service manual (Ocr-read)
Page 1
2 TC-WE675 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. RE- PLACE 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 FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY. SAFETY CHECK-OUT After correcting the original service problem, perform the follow- ing safety checks 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 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). Leak- age 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 2V AC range are suitable. (See Fig. A) Fig. A. Using an AC voltmeter to check AC leakage. 0.15µFTo Exposed Metal Parts on Set 1.5kΩAC voltmeter (0.75V) Earth Ground General Power requirements U.S.A.and Canadian models: 120 V AC, 60Hz European models: 230 V AC, 50/60Hz Australian models: 240 V AC, 50/60Hz Other models: 120/220/230-240 V AC, 50/60Hz Adjustable with voltage selector Power consumption 22 watts Dimensions (w/h/d) Approx. 430 × 120 × 300 mm Mass 4.2 kg Supplied accessories Audio connecting cords (2) Control A1II cable (1)* *Supplied for Canadian models only Design and specifications are subject to change without notice.
Page 2
3 TC-WE675 PARTS No. MODEL 4-232-414-0sUS model 4-232-414-1sCND model 4-232-414-2sAEP model 4-232-414-3sUK model 4-232-414-4sSP model 4-232-414-5sAUS model MODEL IDENTIFICATION –Back panel– Part No. - Abbreviation CND : Canadian model SP : Singapore model AUS : Australian model TABLE OF CONTENTS 1. GENERAL .......................................................................... 4 2. DISASSEMBLY 2-1. Case ...................................................................................... 5 2-2. Front Panel Assy ................................................................... 5 2-3. Cassette Lid Assy (Deck A/B) .............................................. 6 2-4. Mechanism Deck Assy (Deck A/B) ...................................... 6 3. SERVICE MODE .............................................................. 7 4. MECHANICAL ADJUSTMENTS ................................. 8 5. ELECTRICAL ADJUSTMENTS ................................. 8 6. DIAGRAMS 6-1. Circuit Boards Location ...................................................... 12 6-2. Printed Wiring Board – MAIN Section – ........................... 14 6-3. Schematic Diagram – MAIN (1/4) Section – ..................... 15 6-4. Schematic Diagram – MAIN (2/4) Section – ..................... 16 6-5. Schematic Diagram – MAIN (3/4) Section – ..................... 17 6-6. Schematic Diagram – MAIN (4/4) Section – ..................... 18 6-7. Printed Wiring Board – DECK Section – ........................... 19 6-8. Schematic Diagram – DECK Section – .............................. 19 6-9. Schematic Diagram – LEAF SW Section – ........................ 20 6-10. Printed Wiring Board – LEAF SW Section – ................... 21 6-11. Schematic Diagram – PANEL Section – ........................... 22 6-12. Printed Wiring Board – PANEL Section – ........................ 23 6-13. Schematic Diagram – POWER Section – ......................... 24 6-14. Printed Wiring Board – POWER Section – ...................... 25 6-15. IC PIN FUNCTION .......................................................... 26 7. EXPLODED VIEWS 7-1. Case Section ........................................................................ 27 7-2. Chassis Section ................................................................... 28 7-3. Cassette Holder Section ...................................................... 29 7-4. Front Panel Section ............................................................. 30 7-5. Tape Mechanism Section .................................................... 31 8. ELECTRICAL PARTS LIST ........................................ 32