Sony WM-FX673 WM-FX877 free download

File name WM-FX673 WM-FX877.pdf

WM-FX673/FX877 SERVICE MANUAL Ver 1.0 1999. 03 Canadian Model AEP Model UK Model Australian Model WM-FX673 E Model WM-FX673/FX877 Chinese Model Tourist Model WM-FX877 Photo: WM-FX673 Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation. "DOLBY" and the double-D symbol a are trademarks of Dolby Laboratories Licensing Corporation. Model Name Using Similar Mechanism Tape Transport Mechanism Type WM-EX670/EX672 MT-WMEX672-162 SPECIFICATIONS RADIO CASSETTE PLAYER MICROFILM TABLE OF CONTENTS 1. 2. 3. 4. 5. 6. 6-1. 6-2. 6-3. 6-4. 6-5. SERVICING NOTES ... 3 GENERAL ... 5 DISASSEMBLY ... 7 MECHANICAL ADJUSTMENTS ... 12 ELECTRICAL ADJUSTMENTS ... 12 DIAGRAMS Block Diagram ­ TUNER Section ­ ... 15 Block Diagram ­ MAIN Section ­ ... 17 Printed Wiring Board ... 19 Schematic Diagram ... 23 IC Pin Function Description ... 30 7. 8. EXPLODED VIEWS ... 32 ELECTRICAL PARTS LIST ... 34 Flexible Circuit Board Repairing · Keep the temperature of the soldering iron around 270 °C during repairing. · Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). · Be careful not to apply force on the conductor when soldering or unsoldering. 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 ! 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 А LA SЙCURITЙ! LES COMPOSANTS IDENTIFIЙS PAR UNE MARQUE ! SUR LES DIAGRAMMES SCHЙMATIQUES ET LA LISTE DES PIИCES SONT CRITIQUES POUR LA SЙCURITЙ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIИCES SONY DONT LES NUMЙROS SONT DONNЙS DANS CE MANUEL OU DANS LES SUPPLЙMENTS PUBLIЙS PAR SONY. ­2­ SECTION 1 SERVICING NOTES This set detects the rotation of the idler gear (A) (side S) using the PH1 (photo reflector). The PH1 is mounted on the MAIN board, therefore the idler gear (A) (side S) cannot be detected with the MAIN board removed. As a result, the motor (M601) cannot be controlled, causing malfunction. Further, the DIRECTION switch (S1) is also mounted on the MAIN board, and with the board removed, the mechanism position cannot be detected and the operation is not changed over. T