Sony cfd s 26 service manual
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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 PUBLISHED BY SONY. General Speaker Full range: 10 cm dia., 3.2 ohms, cone type (2) Outputs Headphones jack (stereo minijack) For 16 - 68 ohms impedance headphones Power output (excluding US model) 2.3 W + 2.3 W (at 3.2 ohms, 10 % harmonic distortion in AC operation) Power requirements For CD radio cassette-corder: US, E92, MX model: 120 V AC, 60 Hz SP, AR, AUS model: 230 V AC, 50 Hz E4 model: 110 - 120 V/220 - 240 V AC selectable, 50/60 Hz 9 V DC, 6 size D (R20) batteries Power consumption AC 20 W 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 × 159 × 284 mm (w/h/d) (16 5/8 × 6 3/8 × 11 1/4 inches) (incl. projecting parts) Mass Approx. 3.8 kg (8 lb. 6 oz.) (incl. batteries) Supplied accessories AC power cord (1) Design and specifications are subject to change without notice. -Abbreviation AR : Argentina model AUS : Australian model E4 : AC 110-120V/220-240V area in E model E92 : AC 120V area in E model MX : Mexican model SP : Singapore model 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 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 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. CFD-S26
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3 TABLE OF CONTENTS 1. SERVICING NOTES ......................................................... 4 2. GENERAL ............................................................................ 7 3. DISASSEMBLY 3-1. Cabinet (Front) Sub Assy .................................................... 8 3-2. Wires ................................................................................... 9 3-3. Power (1) Board, Power (2) Board ...................................... 9 3-4. Voltage Select Board ......................................................... 10 3-5. Cabinet (Upper) Assy ........................................................ 10 3-6. Main Board ....................................................................... 11 3-7. CD Mechanism Block ....................................................... 11 3-8. Tape Mechanism Block ..................................................... 12 3-9. Holder Assy, Cassette ........................................................ 12 3-10. PRE Board ......................................................................... 13 3-11. Belt, M801 (Capstan/Reel Motor), HRP301 (Head, Magnetic) ................................................ 13 3-12. Optical Pick-up ................................................................. 14 4. MECHANICAL ADJUSTMENTS ............................... 15 5. ELECTRICAL ADJUSTMENTS Tape Section .......................................................................... 15 Tuner Section ......................................................................... 16 CD Section ............................................................................ 17 6. DIAGRAMS 6-1. IC Pin Description ............................................................. 18 6-2. Circuit Boards Location .................................................... 19 6-3. Block Diagram – CD Section (Former Type) –................ 20 6-4. Block Diagram – Main Section (Former Type) –.............. 21 6-5. Printed Wiring Board – CD Section (Former Type) –....... 22 6-6. Schematic Diagram – CD Section (Former Type) –......... 23 6-7. Printed Wiring Boards – Main Section (Former Type) –.. 24 6-8. Schematic Diagram – Main Section (1/4) (Former Type) –.. 25 6-9. Schematic Diagram – Main Section (2/4) (Former Type) –.. 26 6-10. Schematic Diagram – Main Section (3/4) (Former Type) –.. 27 6-11. Schematic Diagram – Main Section (4/4) (Former Type) –.. 28 6-12. Printed Wiring Boards – Control Section (Former Type) –... 29 6-13. Schematic Diagrams – Control Section (Former Type) –...... 30 6-14. Printed Wiring Boards – Power Supply Section (Former Type) –.. 31 6-15. Schematic Diagrams – Power Supply Section (Former Type) –.... 32 6-16. Block Diagram – CD Section (New Type) –..................... 33 6-17. Block Diagram – Main Section (New Type) –.................. 34 6-18. Printed Wiring Board – CD Section (New Type) –........... 35 6-19. Schematic Diagram – CD Section (New Type) –.............. 36 6-20. Printed Wiring Boards – Main Section (New Type) –...... 37 6-21. Schematic Diagram – Main Section (1/4) (New Type) –.. 38 6-22. Schematic Diagram – Main Section (2/4) (New Type) –.. 39 6-23. Schematic Diagram – Main Section (3/4) (New Type) –.. 40 6-24. Schematic Diagram – Main Section (4/4) (New Type) –.. 41 6-25. Printed Wiring Boards – Control Section (New Type) –... 42 6-26. Schematic Diagrams – Control Section (New Type) –..... 43 6-27. Printed Wiring Boards – Power Supply Section (New Type) –.. 44 6-28. Schematic Diagrams – Power Supply Section (New Type) –.... 45 7. EXPLODED VIEWS 7-1. Cabinet (Front) Section ..................................................... 48 7-2. Cabinet (Rear) Section ...................................................... 49 7-3. Cabinet (Upper) Section .................................................... 50 7-4. Tape Mechanism Section-1 ............................................... 52 7-5. Tape Mechanism Section-2 ............................................... 53 7-6. Optical Pick-up Section .................................................... 54 8. ELECTRICAL PARTS LIST ......................................... 55 CFD-S26 To Exposed Metal Parts on Set 0.15µF 1.5k Ω AC voltmeter (0.75V) Earth Ground Fig. A. Using an AC voltmeter to check AC leakage. SAFETY CHECK-OUT (US model) After correcting the original service problem, perform the following safety check 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 TEST 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 microamperes). Leakage 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 passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2V AC range are suitable. (See Fig. A)