Sony cfd g 30l g 50l cd radio cassette corder
This is the 46 pages manual for sony cfd g 30l g 50l cd radio cassette corder.
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- 2 - TABLE OF CONTENTS 1. SERVICE NOTES ····························································3 2. GENERAL ··········································································4 3. DISASSEMBLY 3-1. Front Cabinet Assy·····························································5 3-2. Control-1, Headphone Board·············································6 3-3. Cabinet (Upper) Assy·························································6 3-4. Power, Batt, Tuner, Batt Com Board··································7 3-5. Main, Line In, LCD Board·················································7 3-6. CD Board, Optical Pick-up Section, Mechanism Deck································································8 3-7. Belt·····················································································8 4. ADJUSTMENT 4-1. Mechanical Adjustment······················································9 4-2. Electrical Adjustment·························································9 5. DIAGRAM 5-1. Circuit Boards Location···················································12 5-2. Block Diagrams – Tuner/CD Section – ····························13 – Main Section – ·······························································15 5-3. Schematic Diagram – CD Section – ·································18 5-4. Printed Wiring Board – CD Section – ······························21 5-5. Schematic Diagram – Cassette Deck Section – ················23 5-6. Printed Wiring Board – Cassette Deck Section – ·············25 5-7. Schematic Diagram – Tuner Section – ·····························27 5-8. Printed Wiring Board – Tuner Section – ··························29 5-9. Printed Wiring Board – Main Section – ···························31 5-10. Schematic Diagram – Main Section (1/2) – ·····················33 5-11. Schematic Diagram – Main Section (2/2) – ·····················35 5-12. Printed Wiring Board and Schematic Diagram – Control Section – ··························································37 5-13. Schematic Diagram – Power Section – ····························39 5-14. Printed Wiring Board – Power Section – ·························41 5-15. IC Pin Function Description·············································43 5-16. IC Block Diagrams···························································45 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. 1. Check the area of your repair for unsoldered or poorly-soldered connections. Check the entire board surface for solder splashes and bridges. 2. Check the interboard wiring to ensure that no wires are "pinched" or contact high-wattage resistors. 3. Look for unauthorized replacement parts, particularly transistors, that were installed during a previous repair. Point them out to the customer and recommend their replacement.4. Look for parts which, through functioning, show obvious signs of deterioration. Point them out to the customer and recommend their replacement. 5. Check the B+ voltage to see it is at the values specified. 6. 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. SAFETY CHECK-OUT After correcting the original service problem, perform the following safety checks before releasing the set to the customer. 6. EXPLODED VIEWS 6-1. Front Cabinet Section·······················································49 6-2. Rear Cabinet Section························································50 6-3. Upper Cabinet Section······················································51 6-4. Mechanism Deck Section (1) (MF-V5-117)····················52 6-5. Mechanism Deck Section (2) (MF-V5-117)····················53 6-6. Optical Pick-up Section (KSM-213CDP)························54 7. ELECTRICAL PARTS LIST··································· 55
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- 3 - SECTION 1 SERVICE NOTES 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. CHUCK PLATE JIG ON REPAIRING On repairing CD section, playing a disc without the CD lid, use Chuck Plate Jig. - Code number of Chuck Plate Jig : X-4918-255-1 LASER DIODE AND FOCUS SEARCH OPERATION CHECK 1. Press CD open knob. 2. Open the lid for CD. 3. Push on SWITCH (S701) as following figure. 4. Confirm the laser diode emission while observing the objecting lens. When there is no emission, Auto Power Control circuit or Optical Pick-up is broken. Objective lens moves up and down once for the focus search. This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is located on the rear exterior. The following caution label is located inside the unit. Laser component in this product is capable of emitting radiation exceeding the limit for Class 1. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. Insert a precision screw driver and push SWITCH (S701)