SCD-1/777ES SERVICE MANUAL For Technical service TABLE OF CONTENTS 3. 4. 5. 6. 7. SERVICING NOTES ............................................... 3 DISASSEMBLY-2 ..................................................... 5 TEST MODE .............................................................. 10 ELECTRICAL ADJUSTMENTS ......................... 12 DIAGRAMS 17 18 19 20 21 22 23 24 7-9. 7-10. 7-11. 7-12. 7-13. 7-14. 7-15. 7-16. 7-17. 7-18. 7-19. 7-20. 7-21. 7-22. 7-23. 7-24. Schematic Diagram ­ MAIN Board (2/7) ­ .................. Schematic Diagram ­ MAIN Board (3/7) ­ .................. Schematic Diagram ­ MAIN Board (4/7) ­ .................. Schematic Diagram ­ MAIN Board (5/7) ­ .................. Schematic Diagram ­ MAIN Board (6/7) ­ .................. Schematic Diagram ­ MAIN Board (7/7) ­ .................. Printed Wiring Board ­ AUDIO Board ­ ...................... Schematic Diagram ­ AUDIO Board (1/2) ­ ................ Schematic Diagram ­ AUDIO Board (2/2) ­ ................ Printed Wiring Boards ­ BAL(SCD-1)/COAX/ OPT/PIN/SW Boards ­ ................................................... Schematic Diagram ­ BAL(SCD-1)/COAX/ OPT/PIN/SW Boards ­ ................................................... Printed Wiring Boards ­ DISPLAY/SW-L/ SW-R Boards ­ ................................................................ Schematic Diagram ­ DISPLAY/SW-L/ SW-R Boards ­ ................................................................ Printed Wiring Boards ­ AC/POWER Boards ­ ........... Schematic Diagram ­ AC/POWER Boards ­ ................ IC Pin Function Description ........................................... 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 43 US Model Canadian Model AEP Model 7-1. Notes for Printed Wiring Board and Schematic Diagram ......................................................... 7-2. Printed Wiring Boards ­ RF/SLD-FG/SLD-MOT Boards ­ ........................................................................... 7-3. Schematic Diagram ­ RF/SLD-FG/SLD-MOT Boards ­ ........................................................................... 7-4. Printed Wiring Boards ­ LOAD-CN/LOAD-MOT/ LOAD-SW/STB Boards ­ .............................................. 7-5. Schematic Diagram ­ LOAD-CN/LOAD-MOT/ LOAD-SW/STB Boards ­ .............................................. 7-6. Printed Wiring Board ­ MAIN Board (component side) ­ .......................................................... 7-7. Printed Wiring Board ­ MAIN Board (conductor side) ­ ........................................................... 7-8. Schematic Diagram ­ MAIN Board (1/7) ­ .................. 8. 9. EXPLODED VIEWS ................................................ 50 ELECTRICAL PARTS LIST ............................... 59 CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. SAFETY CHECK-OUT 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 lowvoltage 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 2 V AC range are suitable. (See Fig. A) To Exposed Metal Parts on Set The following caution label is located inside of the unit. For the customers in Canada CAUTION TO PREVENT ELECTRIC SHOCK, DO NOT USE THIS POLARIZED AC PLUG WITH AN EXTENSION CORD, RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE. For the customers in Europe This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is located on the rear exterior. 0.15 µF 1.5 k AC voltmeter (0.75 V) Earth Ground Fig. A. Using an AC voltmeter to check AC leakage. Laser component in this product is capable of emitting radiation exceeding the limit for Class 1. The following caution label is located inside the unit. 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 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-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. ATTENTION AU COMPOSANT AYANT RAPPORT À LA SÉCURITÉ! LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY. 2 SECTION 3 SERVICING NOTES 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, observe from more than 30 cm away from the objective lens. MODEL IDENTIFICATION CHECKING METHOD OF MICROCOMPUTER ROM VERSION 1. Set the CD1/CD2 switch on the remote commander to CD1. 2. With the power turned on, press the [CHECK] button on the remote commander while pressing the [TEXT] button on the set. 3. 15-digit numeric value will be displayed, and the top 4 digits (left side) of the numeric value imply the microcomputer ROM version. Example: If "200006100FFFF3C" is displayed, the ROM version is 2.000. 4. To cancel the ROM version check mode, press the [CHECK] button on the remote commander while pressing the [TEXT] button on the set. DISPLAY OF TOC ERROR Display TOC ERROR * Contents Not SACD (DVD disc etc.) TOC ERROR **** Illegal SACD disc (pirate edition) ­ Back Panel ­ Part No. Model SCD-1: US, Canadian SCD-1: AEP SCD-777ES: AEP SCD-777ES: US, Canadian Part No. 4-215-784-1s 4-215-784-2s 4-221-854-0s 4-221-854-1s SERVICE POSITION In checking the BU section, prepare two new jigs (extension cable J-2501-164-A: 1.00 mm 26 cores). OP mechanism section (BU-23) insulator Any board to put connect two jigs (extension cable J-2501-164-A) to the RF board (CN001, 002) and Main board (CN501, 502). 3 REPLACING OPTICAL PICK-UP Handling 1) A red laser diode for Super Audio CD Player requires more attention to static electricity than general infrared laser diodes for CD. Because its durability to static electricity is far weaker than that of infrared laser diodes, always use an earth band when handling the optical pick-up block as service parts. 2) As for the flexible board KHS-180A (RP) packed as service parts, the short lands have been soldered to protect from static electricity. Accordingly, remove solders when replacing optical pick-up. (See Fig. 1) DVD short land 3) In handling the KHS-180A (RP), do not touch inhibited parts shown in Fig. 2, but grip the slide base bearing and U-shaped guide. Slide base bearing Skew sensor Lens actuator covers Objective lenses Laser holder OEIC U-shaped guide CD short land Touch inhibited parts · Objective lens · Skew sensor · Laser holder · Laser coupler · Flexible board · OEIC · Lens actuator covers Flexible board Connector Fig. 1 Flexible board Laser coupler Fig. 2 KHS-180A (RP) 4 SECTION 4 DISASSEMBLY-2 Note: Follow the disassembly procedure in the numerical order given. OP MECHANISM SECTION (BU-23) 3 two screws (B2.6 × 5) 4 two washers 4 two washers 3 two screws (B2.6 × 5) 5 Lift up OP mechanism section (BU-23). 1 screw (PS3 × 5) 6 two wires (flat type) (26 core) (CN501, 502) 2 lag OPTICAL PICK-UP (KHS-180A/J1N) (Page 7) RF BOARD (Page 7) MAIN BOARD 2 five screws (PS 3 × 5) 1 two connectors (CN701, 708) 3 MAIN board 1 five connectors (CN702-706) 5 FRONT PANEL SECTION (SCD-1) 3 push (control block) (wire) switch 4 six screws (RK4 × 8) 2 two claws 2 two claws 5 side plate (L) 1 two connectors (CN452, 702) 7 two screws (BVTT4 × 6) 8 front panel section 5 side plate (R) 6 five screws (BVTP3 × 10) 4 six screws (RK4 × 8) FRONT PANEL SECTION (SCD-777ES) 3 push (control block) (wire) switch 2 two claws 4 six screws (RK4 × 8) 2 two claws 5 side plate (R) 7 screw (BVTT3 × 6) 1 two connectors (CN452, 702) 8 front panel section 4 six screws (RK4 × 8) 6 four screws (BVTP3 × 10) 7 screw (BVTT3 × 6) 5 side plate (L) 6 OPTICAL PICK-UP (KHS-180A/J1N) 6 two screws (B3 × 5) 2 screw (PSW3 × 10) 7 retainer (OP) ass'y 3 holder (R2) 8 leaf spring (Y) 4 holder (R) 5 bracket (OP) ass'y 9 optical pick-up (KHS-180A/J1N) 1 OP-15 flexible print board (CN003) RF BOARD 1 OP-15 flexible print board (CN003) 1 wire (flat type) (14 core) (CN007) 2 two connectors (CN004, 006) 5 RF board 4 four spacers (3 × 5) 2 connector (CN005) 3 four screws (B3 × 10) 7 SLED MOTOR ASS'Y SECTION 1 five screws (B3 × 5) 3 three poly-slider washers 2 cover (BU) 4 gear (D) 5 gear (C) 6 gear (B) 8 SLD-MOT board 0 sled motor ass'y section 9 three screws (B3 × 5) 7 screw (B3 × 5) TILT MOTOR ASS'Y (M3) 2 bracket (tilt) ass'y 4 tilt motor ass'y (M3) 3 two precision screws (P2 × 2.5) 1 two screws (B3 × 5) 8 SPINDLE MOTOR BLOCK 3 two shaft retainers (sub) 2 screw (B3 × 5) 2 screw (B3 × 5) 5 spindle motor block 6 sled shaft (sub) 4 two shaft retainers (main) 2 two screws (B3 × 5) 1 slide the spindle motor block toward the arrow. 7 sled shaft (main) APPLYING OIL AT REPLACEMENT OF MOTOR (SPINDLE) (M7) When replacing the motor (spindle) (M7), apply a drop of oil to the sled shaft (sub) and the sled shaft (main) respectively. Part Name FLOIL (946P) Part No 7-662-001-37 Notes: · Do not attach oil to other than specified parts. · Do not touch the lens and laser diode during work. sled shaft (main) sled shaft (sub) 9 SECTION 5 TEST MODE 5-1. FLUORESCENT INDICATOR TUBE MODE Note: Set the CD1/CD2 switch on the remote commander to CD1. Geid Assignment 16G 19G 20G Procedure: 1. Press the ! button while shorting the BP (TEST MODE) on the DISPLAY board with tweezers, etc. and turn on the power, so that the following operation will be executed automatically. (1) All segments from 1G to 19G light up in order, starting from 1G. (2) Vertical one line (total 7) of all grids from 1G to 15G lights up in order, starting from the left. (3) Horizontal one line (total 5) of all grids from 1G to 15G lights up in order, starting from the top. (4) Grids from 1G to 15G go off, and all segments from 16G to 19G light up. 2. With the set in the 1-(4) status, pressing any key on the remote commander changes the display as shown below, and activates the key check standby mode. 17G 18G 1G 2G 3G 4G 5G 6G 7G 8G 9G 10G 11G 12G 13G 14G 15G ­ DISPLAY Board (Conductor Side) ­ BP (TEST MODE) CN1002 CN1001 STEP INDEX MIN ARTIST CD1 CD2 CD3 3. When a key on the front panel is pressed, the corresponding segment and LED light up. (See table below) key on set A TIME TEXT DIGITAL OUT FILTER SACD/CD H X x l L Key Attribute EJECT TIME TEXT DIGITAL OUT FILTER SACD/CD PLAY PAUSE STOP AMS-BACK AMS-FORWARD Lighting segment (in 19 grids) 20 bit 24 bit __|_____ (DIGITAL FILTER) DIGITAL OUTPUT __|_____ (DIGITAL OUTPUT) NORM WIDE STD1234 DIGITAL FILTER 16 bit OFF Lightning LED ­ ­ ­ ­ ­ ­ PLAY LED PAUSE LED ­ CD LED SACD LED 4. If "! ...