Sony RCD W222 ES Service Manual

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2 RCD-W222ES SAFETY CHECK-OUT After correcting the original service problem, perform the follow- ing safety checks 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 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 microampers). Leak- age 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 pas- sive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2V AC range are suitable. (See Fig. A) 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. 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. Flexible Circuit Board Repairing -Keep the temperature of 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 HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down 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, ob- serve from more than 30 cm away from the objective lens. CAUTIONUse of controls or adjustments or performance of procedures other than those specified herein may result in hazardous ra- diation exposure. Fig. A. Using an AC voltmeter to check AC leakage. 0.15µFTo Exposed Metal Parts on Set 1.5k-„¦AC voltmeter (0.75V) Earth Ground CAUTION The use of optical instruments withthis product will increase eye hazard. As the laser beam used in this Compact Disc Recorder is harmful to eyes, do not attempt to disassemble the cabinet. Refer servicing to qualifiedpersonnel only . The following caution label is located inside the apparatus.

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3 RCD-W222ES TABLE OF CONTENTS 1. SERVICING NOTE .......................................................... 4 2. GENERAL ........................................................................\ .. 7 3. DISASSEMBLY 3-1. Case (Top) ........................................................................\ .... 8 3-2. Front Panel Section .............................................................. 9 3-3. Power SW board, HP board, RM board, LED board, CD SW board, Display Board .......................... 9 3-4. Deck A (CDM53L-30B61B), Deck B (CDM65-RBD1) ... 10 3-5. CD-R Board, Tray And Optical Pick-Up Block (KRM-220) (Deck B) ......................................................... 11 3-6. CD Base Unit (BU-30BBD61B) (Deck A) ........................ 12 3-7. Fitting Base (Guide) Assy, Bracket (Chassis) And Magnet Assy (Deck A) ............................................... 12 3-8. Tray (Sub) (Deck A) .......................................................... 13 3-9. Chassis (Mold B) Section, Stocker Section And Slider (Selection) ........................................................ 13 4. ASSEMBLY ....................................................................... 14 5. TEST MODE ...................................................................... 17 6. ELECTRICAL ADJUSTMENT ................................... 20 7. DIAGRAMS 7-1. Circuit Boards Location .................................................... 51 7-2. Block diagrams -“ BD Section -“ ........................................ 52 Block diagrams -“ CD-R Section -“ .................................... 53 Block diagrams -“ MAIN Section -“ ................................... 54 7-3. Schematic Diagram -“ CD-R (1/3) Section -“ ..................... 55 7-4. Schematic Diagram -“ CD-R (2/3) Section -“ ..................... 56 7-5. Schematic Diagram -“ CD-R (3/3) Section -“ ..................... 57 7-6. Printed Wiring Board -“ CD-R Section (Side A) -“ ............ 58 Printed Wiring Board -“ CD-R Section (Side B) -“ ............ 59 7-7. Printed Wiring Board -“ BD Section -“ ............................... 60 7-8. Schematic Diagram -“ BD Section -“ ................................ 61 7-9. Printed Wiring Board -“ CDM Section -“ ........................... 62 7-10. Schematic Diagram -“ CDM Section -“ ............................. 63 7-11. Printed Wiring Board -“ MAIN Section (Side A) -“ ........... 64 Printed Wiring Board -“ MAIN Section (Side B) -“ ........... 65 7-12. Schematic Diagram -“ MAIN (1/2) Section -“ ................... 66 7-13. Schematic Diagram -“ MAIN (2/2) Section -“ ................... 67 7-14. Printed Wiring Board -“ LED, HP Section -“ ...................... 68 7-15. Schematic Diagram -“ LED, HP Section -“ ....................... 69 7-16. Printed Wiring Board -“ Display, Power Section -“ ............ 70 7-17. Schematic Diagram -“ Display, Power Section -“ ............... 71 7-18. IC Pin Functions ................................................................ 72 7-19. IC Block Diagrams ............................................................ 83 8. EXPLODED VIEWS 8-1. Case Section ........................................................................\ 85 8-2. Front Panel Section ............................................................. 86 8-3. Chassis Section ................................................................... 87 8-4. CD Play Mechanism Section (Deck A)-1 (CDM53L-30B61B) ........................................................... 88 8-5. CD Play Mechanism Section (Deck A)-2 (CDM53L-30B61B) ........................................................... 89 8-6. CD Play Mechanism Section (Deck A)-3 (CDM53L-30B61B) ........................................................... 90 8-7. Stocker Overall, Optical Pick-Up Section (Deck A) .......... 91 8-8. Base Unit (Deck A) ............................................................. 92 8-9. CD-R Mechanism Deck Section (Deck B) ......................... 93 9. ELECTRICAL PARTS LIST ................................. 94 SELF-DIAGNOSIS FUNCTION When the self-diagnosis function is activated to prevent the player from\ malfunctioning, three character service numbers in a combination with a message appears in the display. In this case, check the following table. Message Explanation C12/ You are trying to record a disc that cannot be played Cannot Copy back in DECK-A or with an external device, such as CD-ROM or VIDEO CD. - Remove the disc, and then insert a music CD for playback. C13/ Recording has not been completed successfully be- Rec Error cause of vibration. - Relocate the unit in a place free of vibration and restart the recording again. The disc you try to record is excessively dirty (such as oilstained or finger marked) or scratched. Or the disc is not normal. - Replace the disc with another one and restart the recording again. C14/ The unit did not read the TOC information. T OC Error - Insert other discs. C41/ The sound source you are trying to record is a copy Cannot Copy of a commercial music software. Or you are trying to record on a CD-R/CD-RW digitally. - Because of the restriction of the Serial Copy Man-agement System, you cannot record a copy of a commercial music software. Neither can you record a CD-R/ CD-RW digitally. - Use analog recording through the ANALOG IN jack when you record from other units. Or use Syn- chro-Recording when you record from DECK A. (The recording mode is automatically changed to analog recording.) C71/ If this message is displayed momentarily, this is not Din Unlock an error. It is caused by the digital signal during re- cording. During recording of a digital sound source, the con- necting cable has been disconnected or the player of the sound source has turned off. - Connect the cable or turn on the digital player.