Sony Scd-1 Service Manual
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SERVICE MANUAL For Technical service US Model Canadian Model AEP Model SCD-1/ 777ES 3. SERVICING NOTES............................................... 3 4. DISASSEMBLY-2..................................................... 5 5. TEST MODE.............................................................. 10 6. ELECTRICAL ADJUSTMENTS......................... 12 7. DIAGRAMS 7-1. Notes for Printed Wiring Board and Schematic Diagram ......................................................... 17 7-2. Printed Wiring Boards Ð RF/SLD-FG/SLD-MOT Boards Ð ........................................................................... 18 7-3. Schematic Diagram Ð RF/SLD-FG/SLD-MOT Boards Ð ........................................................................... 19 7-4. Printed Wiring Boards Ð LOAD-CN/LOAD-MOT/ LOAD-SW/STB Boards Ð .............................................. 20 7-5. Schematic Diagram Ð LOAD-CN/LOAD-MOT/ LOAD-SW/STB Boards Ð .............................................. 21 7-6. Printed Wiring Board Ð MAIN Board (component side) Ð .......................................................... 22 7-7. Printed Wiring Board Ð MAIN Board (conductor side) Ð ........................................................... 23 7-8. Schematic Diagram Ð MAIN Board (1/7) Ð .................. 247-9. Schematic Diagram Ð MAIN Board (2/7) Ð .................. 25 7-10. Schematic Diagram Ð MAIN Board (3/7) Ð .................. 26 7-11. Schematic Diagram Ð MAIN Board (4/7) Ð .................. 27 7-12. Schematic Diagram Ð MAIN Board (5/7) Ð .................. 28 7-13. Schematic Diagram Ð MAIN Board (6/7) Ð .................. 29 7-14. Schematic Diagram Ð MAIN Board (7/7) Ð .................. 30 7-15. Printed Wiring Board Ð AUDIO Board Ð ...................... 31 7-16. Schematic Diagram Ð AUDIO Board (1/2) Ð ................ 32 7-17. Schematic Diagram Ð AUDIO Board (2/2) Ð ................ 33 7-18. Printed Wiring Boards Ð BAL(SCD-1)/COAX/ OPT/PIN/SW Boards Ð ................................................... 34 7-19. Schematic Diagram Ð BAL(SCD-1)/COAX/ OPT/PIN/SW Boards Ð ................................................... 35 7-20. Printed Wiring Boards Ð DISPLAY/SW-L/ SW-R Boards Ð ................................................................ 36 7-21. Schematic Diagram Ð DISPLAY/SW-L/ SW-R Boards Ð ................................................................ 37 7-22. Printed Wiring Boards Ð AC/POWER Boards Ð ........... 38 7-23. Schematic Diagram Ð AC/POWER Boards Ð ................ 39 7-24. IC Pin Function Description ........................................... 43 8. EXPLODED VIEWS................................................ 50 9. ELECTRICAL PARTS LIST............................... 59 TABLE OF CONTENTS
2 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. Flexible Circuit Board Repairing ¥ Keep the temperature of the soldering iron around 270 ûC dur- ing 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. ATTENTION AU COMPOSANT AYANT RAPPORT Ë LA SƒCURITƒ! LES COMPOSANTS IDENTIFIƒS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHƒMATIQUES ET LA LISTE DES PIéCES SONT CRITIQUES POUR LA SƒCURITƒ DE FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS QUE PAR DES PIéCES SONY DONT LES NUMƒROS SONT DONNƒS DANS CE MANUEL OU DANS LES SUPPLƒMENTS PUBLIƒS PAR SONY. 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 PUB- LISHED BY SONY. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous ra- diation exposure. 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.SAFETY CHECK-OUT After correcting the original service problem, perform the follow- ing safety check before releasing the set to the customer: Check the antenna terminals, metal trim, ÒmetallizedÓ 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 manufacturersÕ 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 ÒlimitÓ indica- tion is 0.75 V, so analog meters must have an accurate low- voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex- amples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2 V AC range are suit- able. (See Fig. A) 1.5 kW0.15 µFAC voltmeter (0.75 V) To Exposed Metal Parts on Set Earth Ground 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. Fig. A. Using an AC voltmeter to check AC leakage.
3 SECTION 3 SERVICING NOTES The laser diode in the optical pick-up block may suffer electro- static 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 emis- sion, observe from more than 30 cm away from the objective lens. MODEL IDENTIFICATION NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT Part No. – Back Panel – Model Par t No. SCD-1: US, Canadian 4-215-784-1s SCD-1: AEP 4-215-784-2s SCD-777ES: AEP 4-221-854-0s SCD-777ES: US, Canadian 4-221-854-1s 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 Ò200006100FFFF3CÓ is displayed, the ROM ver- sion 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 insulatorOP mechanism section (BU-23) Any board to pu t connect two jigs (extension cable J-2501-164-A) to the RF board (CN001, 002) and Main board (CN501, 502). SERVICE POSITION In checking the BU section, prepare two new jigs (extension cable J-2501-164-A: 1.00 mm 26 cores). Display Contents TOC ERROR ****Illegal SACD disc (pirate edition) TOC ERROR *Not SACD (DVD disc etc.)
4 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 opti- cal pick-up. (See Fig. 1) Fig. 1 Flexible board 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. Fig. 2 KHS-180A (RP) DVD short land CD short land Slide base bearing Skew sensor Lens actuator covers Objective lenses U-shaped guide OEIC Laser holder Flexible board Connector Laser coupler Touch inhibited parts ¥ Objective lens ¥ Skew sensor ¥ Laser holder ¥ Laser coupler ¥ Flexible board ¥ OEIC ¥ Lens actuator covers
5 OP MECHANISM SECTION (BU-23) MAIN BOARD Note: Follow the disassembly procedure in the numerical order given. SECTION 4 DISASSEMBLY-2 2five screws (PS 3 ´ 5) 1two connectors (CN701, 708) 1five connectors (CN702-706) 3MAIN board OPTICAL PICK-UP (KHS-180A/J1N) (Page 7) RF BOARD (Page 7) 2lag 1screw (PS3 ´ 5) 4two washers4two washers 3two screws (B2.6 ´ 5)3two screws (B2.6 ´ 5) 5Lift up OP mechanism section (BU-23). 6two wires (flat type) (26 core) (CN501, 502)
6 4six screws (RK4 ´ 8) 3push (control block) (wire) switch2two claws 2two claws 1two connectors (CN452, 702) 4six screws(RK4 ´ 8)5side plate (L)6four screws (BVTP3 ´ 10) 8front panel section 7screw (BVTT3 ´ 6) 5side plate (R) 7screw (BVTT3 ´ 6) FRONT PANEL SECTION (SCD-1) FRONT PANEL SECTION (SCD-777ES) 4six screws (RK4 ´ 8) 3push (control block) (wire) switch2two claws 2two claws 1two connectors (CN452, 702) 4six screws (RK4 ´ 8)5side plate (R) 6five screws (BVTP3 ´ 10) 8front panel section 7two screws (BVTT4 ´ 6) 5side plate (L)
7 OPTICAL PICK-UP (KHS-180A/J1N) RF BOARD 1OP-15 flexible print board (CN003) 5bracket (OP) assy 4holder (R) 3holder (R2) 2screw (PSW3 ´ 10) 6two screws (B3 ´ 5) 7retainer (OP) assy 8leaf spring (Y) 9optical pick-up (KHS-180A/J1N) 1OP-15 flexible print board (CN003) 5RF board 4four spacers (3 ´ 5) 3four screws (B3 ´ 10) 2connector (CN005) 2two connectors (CN004, 006) 1wire (flat type) (14 core)(CN007)
8 SLED MOTOR ASSY SECTION TILT MOTOR ASSY (M3) 1five screws (B3 ´ 5) 2cover (BU) 3three poly-slider washers 4gear (D) 5gear (C) 6gear (B) 8SLD-MOT board 7screw (B3 ´ 5)9three screws (B3 ´ 5) 0sled motor assy section 2bracket (tilt) assy4tilt motor assy (M3) 3two precision screws (P2 ´ 2.5)1two screws (B3 ´ 5)
9 SPINDLE MOTOR BLOCK APPLYING OIL AT REPLACEMENT OF MOTOR (SPINDLE) (M7) 7sled shaft (main) 6sled shaft (sub) 4two shaft retainers (main) 3two shaft retainers (sub) 5spindle motor block2screw (B3 ´ 5) 2screw (B3 ´ 5) 2two screws (B3 ´ 5) 1slide the spindle motor block toward the arrow. sled shaft (main) sled shaft (sub) When replacing the motor (spindle) (M7), apply a drop of oil to the sled shaft (sub) and the sled shaft (main) respectively. Notes: ¥ Do not attach oil to other than specified parts. ¥ Do not touch the lens and laser diode during work. Part Name Part No FLOIL (946P) 7-662-001-37
10 SECTION 5 TEST MODE 5-1. FLUORESCENT INDICATOR TUBE MODENote: Set the CD1/CD2 switch on the remote commander to CD1. 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. ARTISTMIN STEP INDEX 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 Key Attribute Lighting segment (in 19 grids) Lightning LED AEJECT 20 bit Ð TIME TIME 24 bit Ð TEXT TEXT __ |_____ (DIGITAL FILTER) Ð DIGITAL OUT DIGITAL OUT DIGITAL OUTPUT Ð FILTER FILTER __ |_____ (DIGITAL OUTPUT) Ð SACD/CD SACD/CD NORM Ð HPLAY WIDE PLAY LED XPAUSE STD1234 PAUSE LED xSTOP DIGITAL FILTER Ð lAMS-BACK 16 bit CD LED LAMS-FORWARD OFF SACD LED 4. If Ò!%%TEST-END!!%%Ó is displayed after the keys listed above were all pressed, the key check terminated successfully. Note: As this test does not check the LEDs, check them visually. 5. Press the ! button to turn the power off, and disconnect the plug from the socket. 1G 2G 3G 4G 5G 6G 7G 8G 9G 10G 11G 12G 13G 14G 15G18G 17G 16G 19G 20G Ð DISPLAY Board (Conductor Side) Ð CN1002 CN1001 BP (TEST MODE) Geid Assignment