Sony cfd 922 l service manual

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-“ 2 -“ Battery life For CD radio cassette-corder:FM recordingSony R20P: approx. 13.5 hSony alkaline LR20: approx. 20 hTape playbackSony R20P: approx. 7.5 hSony alkaline LR20: approx. 15 hCD playbackSony R20P: approx. 2.5 hSony alkaline LR20: approx. 7 h Dimensions Approx. 420 × 165 × 256 mm (w/h/d) (16 5/8 × 6 1/2 × 10 1/8 inches) (incl. projecting parts) Mass Approx. 4.1 kg (9 lb. 1 oz.) (incl. batteries) Supplied accessories Mains lead (1) Design and specifications are subject to change without notice. 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 PUBLISHED BY SONY. CAUTION Use of controls or adjustments or performance of proce- dures other than those specified herein may result in haz- ardous radiation exposure. Flexible Circuit Board Repairing -Keep the temperature of the soldering iron around 270ËšC 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 dam- aged by heat. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electrostatic breakdown because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic breakdown and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care. NOTES ON LASER DIODE EMISSION CHECK The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pick- up block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens. This Compact Disc player is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT label is located on the bottom exterior.

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-“ 3 -“ TABLE OF CONTENTS 1. SERVICING NOTES ......................................................... 4 2. GENERAL Location of controls ................................................................. 5 Adjusting the sound emphasis (MEGA BASS/TONE) ........... 5 Playing a CD ........................................................................... 6 Listening to the radio ............................................................... 6 Playing a tape .......................................................................... 7 Recording ................................................................................ 7 3. DISASSEMBLY 3-1. Cabinet (Front) Sub Assy .................................................... 8 3-2. Wires ................................................................................... 9 3-3. Secondary Board, Power Board .......................................... 9 3-4. Tuner Board ....................................................................... 10 3-5. Cabinet (Upper) Assy ........................................................ 10 3-6. Main Board ....................................................................... 11 3-7. CD Block Assy .................................................................. 11 3-8. MD Block Assy ................................................................. 12 3-9. Holder Assy, Cassette ........................................................ 12 3-10. PRE Board ......................................................................... 13 3-11. Head, Magnetic, Head (Erase), Belt, M301 (Capstan/Reel Motor) ........................................................ 13 4. MECHANICAL ADJUSTMENTS ............................... 14 5. ELECTRICAL ADJUSTMENTS Tape Section .......................................................................... 14 Tuner Section ......................................................................... 15 CD Section ............................................................................ 16 6. DIAGRAMS 6-1. IC Pin Description ............................................................. 17 6-2. Circuit Boards Location .................................................... 18 6-3. Block Diagram -“ CD Section -“ ......................................... 19 6-4. Block Diagram -“ Main Section -“ ...................................... 21 6-5. Printed Wiring Board -“ Tuner Section -“ ........................... 23 6-6. Schematic Diagram -“ Tuner Section -“ .............................. 25 6-7. Printed Wiring Board -“ CD Section -“ ............................... 27 6-8. Schematic Diagram -“ CD Section -“ .................................. 29 6-9. Schematic Diagram -“ PRE Section -“ ................................ 31 6-10. Printed Wiring Boards -“ Main Section -“ .......................... 33 6-11. Schematic Diagram -“ Main Section (1/2) -“ ...................... 35 6-12. Schematic Diagram -“ Main Section (2/2) -“ ...................... 37 6-13. Printed Wiring Board -“ Control Section -“ ........................ 39 6-14. Schematic Diagram -“ Control Section -“ ........................... 41 6-15. Printed Wiring Boards -“ Power Supply Section -“ ............ 43 6-16. Schematic Diagram -“ Power Supply Section -“ ................. 45 7. EXPLODED VIEWS 7-1. Cabinet (Front) Section ..................................................... 50 7-2. Cabinet (Rear) Section ...................................................... 51 7-3. Cabinet (Upper) Section .................................................... 52 7-4. Tape Mechanism Section-1 ............................................... 53 7-5. Tape Mechanism Section-2 ............................................... 54 7-6. Optical Pick-up Section ..................................................... 55 8. ELECTRICAL PARTS LIST ......................................... 56