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File name BG-2S CHASSIS KV-G21M2 NO CIRCUIT SONY.pdf

SERVICE MANUAL MODEL COMMANDER DEST. CHASSIS NO. MODEL BG-2S CHASSIS COMMANDER DEST. CHASSIS NO. KV-G21M2 RM-869 Russia SCC-U11B-A TRINITRON ® COLOR TV KV-G21M2 RM-869 SPECIFICATIONS Note Power requirements Television system Color system Channel coverage B/G I D/K M Audio output (speaker) Inputs VHF: E2 to E12 / UHF: E21 to E69 / CATV: S01 to S03, S1 to S41 UHF: B21 to B68 / CATV: S01 to S03, S1 to S41 VHF: C1 to C12, R1 to R12/UHF: C13 to C57, R21 to R60 / CATV: Z1 to Z39, S01 to S03, S1 to S41 VHF: A2 to A13 / UHF: A14 to A79 / CATV: A-8 to A-2, A to W+ 4, W+ 6 to W+ 84 3W (antenna): 75 ohms external terminal ... (video input) jacks: phono jacks D (video): 1 Vp-p, 75 ohms (audio): 500 mVrms, high impedance Outputs A (earphone) jack: minijack Ъ (monitor output) jacks: phono jacks D (video): 1 Vp-p, 75 ohms (audio): 500 mVrms Picture tube Tube size (cm) Screen size (cm) Mass (kg) 21 in. 54 51 22 Design and specifications are subject to change without notice. Measured diagonally Measured diagonally 110-240 V AC, 50/60 Hz B/G, I, D/K, M PAL, PAL 60, SECAM, NTSC4.43, NTSC3.58 Power consumption (W) Indicated on the rear of the TV Dimensions (w/h/d, mm) 516 Ч 464 Ч 478 CAUTION SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE AND THE ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR CARBON PAINTED ON THE CRT, AFTER REMOVING THE ANODE. SAFETY-RELATED COMPONENT WARNING!! COMPONENTS IDENTIFIED BY SHADING AND MARK ! ON THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS 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. ­2­ KV-G21M2 RM-869 TABLE OF CONTENTS Section Title Page 4 Section Title Page 1. GENERAL ... 2. DISASSEMBLY 2-1. 2-2. 2-3. 2-4. 2-5. 2-6. 2-7. 2-8. Rear Cover Removal ... A Board Removal ... F1 Board Removal ... Service Position ... Replacement of Parts ... Terminal Board Bracket Removal ... Demagnetization Coil Removal ... Picture Tube Removal ... 6. DIAGRAMS 6-1. 6-2. 6-3. (1) (2) 6-4. Block Diagram ... Circuit Boards Location ... Schematic Diagrams and Printed Wiring Boards . Schematic Diagrams of A and F1 Boards ... Schematic Diagram of C Board ... Semiconductors ... 23 26 26 31 35 37 9 9 9 9 10 10 10 11 7. EXPLODED VIEW 7-1. Chassis ... 39 41 8. ELECTRICAL PARTS LIST ... 3. SET-UP ADJUST