Sony-SCD-XA777ES-Service-Manual电路原理图.pdf

SERVICE MANUAL Model Name Using Similar MechanismNEW CD Mechanism Type CDM19JB-DVBU4B CDM19JN-DVBU4B Base Unit NameDVBU4B Optical Pick-up NameKHM-230AAA SUPER AUDIO CD PLAYER US Model Canadian Model AEP Model SPECIFICATIONS SCD-XA777ES Ver 1.1 2001.10 9-873-192-02Sony Corporation 2001J0500-1Home Audio Company C 2001.10Published by Sony Engineering Corporation (US and Canadian models) When a super audio CD is played Playing frequency range2 Hz to 100 kHz Frequency response2 Hz to 50 kHz ( 3 dB) Dynamic range108 dB or more Total harmonic distortion rate 0.0012 % or less Wow and flutterValue of measurable limit (0.001 % W. PEAK) or less When a CD is played Frequency response2 Hz to 20 kHz Dynamic range100 dB or more Total harmonic distortion rate 0.0017 % or less Wow and flutterValue of measurable limit (0.001 % W. PEAK) or less Output connector *Output only the audio signals of the CD Laser radiant power: 5.47 uW at 650 nm *These output is the value measured at a distance of about 200mm from the objective lens surface on the optical pick-up. Power requirements120 V AC, 60 Hz 230 V AC, 50/60 Hz (AEP model) Power consumption32 W Dimensions (w/h/d)430 130 380 mm (17 5 1/8 15 in.) incl. projecting parts Mass (approx.)16 kg (35 lbs 5 oz.) Supplied accessories Design and specifications are subject to change without notice. ANALOG OUT DIGITAL (CD) OUT OPTICAL* DIGITAL (CD) OUT COAXIAL* PHONES Jack type Phono jacks Square optical output connector Coaxial output connector Stereo phone jack Output level 2 Vrms (at 50 kilohms) 18 dBm 0.5 Vp-p 10 mW Load impedance Over 10 kilohms Light emitting wave length: 660 nm 75 ohms 32 ohms ( ) Audio connecting cord phono jack 2 (Red and White) y phono jack 2 (Red and White) (3) phono jack 1 (Black) y phono jack 1 (Black) (2) Remote commander RM-SX700 (1) R06 (size-AA) batteries (2) AC power cord (Mains lead) (1) General LaserSemiconductor laser (SACD: 650 nm) (CD: 780 nm) Emission duration: continuous RadioFans.CN 收音机爱 好者资料库 2 SCD-XA777ES TABLE OF CONTENTS 1.SERVICING NOTES.4 2.GENERAL.9 3.DISASSEMBLY 3-1.Disassembly flow . 10 3-2.Case (Top) . 11 3-3.Loading Panel Assy. 11 3-4.Front Panel Section . 12 3-5.MAIN Board, Bracket (MAIN) . 12 3-6.Mechanism Deck (CDM19JB-DVBU4B/ CDM19JN-DVBU4B), RF Board. 13 3-7.Disc Table, Belt, Loading Motor (M1). 13 3-8.Optical Pick-up (KHM-230AAA/J1NP) . 14 3-9.Base Unit (DVBU4B) . 15 4.TEST MODE. 16 5.DIAGRAMS 5-1.Block Diagram RF/SERVO Section . 31 5-2.Block Diagram MAIN Section (1/2) . 32 5-3.Block Diagram MAIN Section (2/2) . 33 5-4.Block Diagram AUDIO Section (1/2) . 34 5-5.Block Diagram AUDIO Section (2/2) . 35 5-6.Block Diagram DISPLAY/POWER SUPPLY Section . 36 5-7.Note for Printed Wiring Boards and Schematic Diagrams . 37 5-8.Printed Wiring Boards LOADING MOTOR/RF/SWITCH Boards . 38 5-9.Schematic Diagram LOADING MOTOR/RF/SWITCH Boards . 39 5-10. Printed Wiring Board MAIN Board (Component Side) . 40 5-11. Printed Wiring Board MAIN Board (Conductor Side) . 41 5-12. Schematic Diagram MAIN Board (1/5) . 42 5-13. Schematic Diagram MAIN Board (2/5) . 43 5-14. Schematic Diagram MAIN Board (3/5) . 44 5-15. Schematic Diagram MAIN Board (4/5) . 45 5-16. Schematic Diagram MAIN Board (5/5) . 46 5-17. Printed Wiring Board D.OUT Board . 47 5-18. Schematic Diagram D.OUT Board . 47 5-19. Printed Wiring Board MOTHER Board (Component Side) . 48 5-20. Printed Wiring Board MOTHER Board (Conductor Side) . 49 5-21. Schematic Diagram MOTHER Board (1/2) . 50 5-22. Schematic Diagram MOTHER Board (2/2) . 51 5-23. Printed Wiring Board AUDIO FRONT Board . 52 5-24. Schematic Diagram AUDIO FRONT Board . 53 5-25. Printed Wiring Board AUDIO SURR Board . 54 5-26. Schematic Diagram AUDIO SURR Board . 55 5-27. Printed Wiring Board AUDIO C/SW Board . 56 5-28. Schematic Diagram AUDIO C/SW Board . 57 5-29. Printed Wiring Board PANEL Board . 58 5-30. Schematic Diagram PANEL Board . 59 5-31. Printed Wiring Boards HP/JOG/KEY/R.CNTL Boards . 60 5-32. Schematic Diagram HP/JOG/KEY/R.CNTL Boards . 61 5-33. Printed Wiring Board A-POWER Board . 62 5-34. Schematic Diagram A-POWER Board . 63 5-35. Printed Wiring Board D-POWER Board . 64 5-36. Schematic Diagram D-POWER Board . 65 5-37. Printed Wiring Boards AC/AC SW Boards . 66 5-38. Schematic Diagram AC/AC SW Boards . 67 5-39. IC Pin Function Description . 76 6.EXPLODED VIEWS 6-1.Case Section . 91 6-2.Front Panel Section . 92 6-3.Bottom Section. 93 6-4.Board Section-1. 94 6-5.Board Section-2. 95 6-6.Chassis Section . 96 6-7.Mechanism Deck Section (CDM19JB-DVBU4B, CDM19JN-DVBU4B) . 97 6-8.Base Unit Section (DVBU4B) . 98 7.ELECTRICAL PARTS LIST. 99 ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFIS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS QUE PAR DES PICES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPLMENTS PUBLIS 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. RadioFans.CN 收音机爱 好者资料库 3 SCD-XA777ES 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 C 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. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous ra- diation exposure. 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. 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, “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 pas- sive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2 V AC range are suitable. (See Fig. A) Fig. A.Using an AC voltmeter to check AC leakage. 1.5 k0.15 F AC voltmeter (0.75 V) To Exposed Metal Parts on Set Earth Ground This label is located on the left exterior. US and Canadian models AEP model 4 SCD-XA777ES SECTION 1 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. CLEANING OF OPTICAL PICK-UP LENS In cleaning the lens of optical pick-up, use the air blower. Never use a cotton swab for cleaning the lens of optical pick-up, which otherwise causes a trouble. RESETTING OPERATION AT POWER ON If the power is turned on with a disc loaded in the set, a sequence of operation as shown below will be performed. (The operation varies depending on the type of disc) Condition: continue mode (1) CD 1.Sled reverse move (sled in) 2.Disc detect 3.IC setting for CD 4.Servo error signal offset auto adjustment 5.Spindle kick for LD on 6.LD on 7.Focus search 8.Focus servo on 9.Spindle kick 10. Spindle servo on 11. E-F balance auto adjustment 12. Tracking when you turn the l AMS L dial clockwise by one click, you go to the succeeding track POWER HONES PHONE EVEL MNM X TM /T XTS CD/CD PENLO E AMS PUSH N ER MULT 2CHMENU Front Panel Parts Descriptions 1 POWER switch (14) Press to turn on the player 2 Remote sensor (4) 3 Disc tray (14) Press A OPEN/CLOSE to open/close the disc tray 4 A OPEN/CLOSE button (14) Press to open the disc tray 5 PHONES Connect the headphones During playback of a Multi channel Super Audio CD, no signal of the Multi channel signal is output from the PHONES jack (see page 7) 6 PHONE LEVEL Adjust the headphones volume SCD-XA777ES 10 This set can be disassembled in the order shown below. SECTION 3 DISASSEMBLY 3-2. CASE (TOP) (Page 11) 3-4. FRONT PANEL SECTION (Page 12) 3-7. DISC TABLE, BELT, LOADING MOTOR (M1) (Page 13) 3-8. OPTICAL PICK-UP (KHM-230AAA/J1NP) (Page 14) 3-9. BASE UNIT (DVBU4B) (Page 15) 3-3. LOADING PANEL ASSY (Page 11) 3-6. MECHANISM DECK (CDM19JB-DVBU4B/ CDM19JN-DVBU4B), RF BOARD (Page 13) 3-3. LOADING PANEL ASSY (Page 11) 3-5. MAIN BOARD, BRACKET (MAIN) (Page 12) SET Note 1: The process described in can be performed in any order. Note 2: Without completing the process described in , the next process can not be performed. Note 3: Illustration of disassembly is omitted. 3-1.DISASSEMBLY FLOW SCD-XA777ES 11 3-3.LOADING PANEL ASSY Note: Follow the disassembly procedure in the numerical order given. 3-2.CASE (TOP) 1three screws (flat head) 7two screws (3 8) 9side plate (right) 8two screws (flat head) 2two screws (flat head) 3case (top) 4two screws (3 8) 5two screws (flat head) 6side plate (left) 5loading panel assy 4bracket (loading panel) 3two screws (P3 10) 1Insert a tapering driver in the hole at the bottom of the unit, turn the cover (CAM) fully in the direction of arrow A. tapering driver cover (CAM) A 2 SCD-XA777ES 12 3-5.MAIN BOARD, BRACKET (MAIN) 3-4.FRONT PANEL SECTION 1six screws (3 8) 5front panel section 2connector (CN481) 3screw (3 8) 3screw (3 8) 4bracket (F) 2connector (CN453) 2connector (CN903) 4bracket (F) 2connector (CN392) 6bracket (main) 5two screws (3 8) 4MAIN board 2connector (CN903) 2connector (CN701) 2connector (CN904) 1wire (flat type) (35 core) (CN503) 1wire (flat type) (19 core) (CN902) 1wire (flat type) (19 core) (CN901) 5two screws (3 8) 3two screws (3 8) 3two screws (3 8) SCD-XA777ES 13 1two screws (BVTT M3 S) 2holder (A. P.) assy 9disc table 8guide bar (main) 6bracket (disc table) 5tapping screw 0gear (P) qffour claws qgloading motor (M1) 3Insert a tapering driver in the hole of the cover (CAM) and turn fully in the direction of arrow A. cover (CAM) taper driver A qagear (C) qsbelt qdtwo screws (P3 3) 4 7 2two screws (3 8) 3bracket (guide wire) 1Push the disc table in the direction of arrow A. 9three screws (BVTP2.6 8) 0RF board 8connector (CN002) 7wire (flat type) (25 core) (CN003) 6mechanism deck (CDM19JB-DVBU4B/CDM19JN-DVBU4B) 4four screws (3 8) disc table A 5 3-7.DISC TABLE, BELT, LOADING MOTOR (M1) 3-6.MECHANISM DECK (CDM19JB-DVBU4B/CDM19JN-DVBU4B), RF BOARD SCD-XA777ES 14 3-8.OPTICAL PICK-UP (KHM-230AAA/J1NP) 2holder (A. P.) assy 7stopper 4Draw out the disc table fully in the arrow B direction. 7stopper 7stopper 7stopper 0optical pick-up (KHM-230AAA/J1NP) 6screw (BVTP2.6 8) 6screw (BVTP2.6 8) 6screw (BVTP2.6 8) 6screw (BVTP2.6 8) 9insulator 9insulator 9insulator 9insulator 5wire (flat type) (25 core) (CN003) 8 qatwo cone type coil spring (230) qatwo cone type coil spring (230) 3Insert a tapering driver in the hole of the cover (CAM) and turn fully in the direction of arrow A. cover (CAM) taper driver A B 1two screws (BVTT M3 S) SCD-XA777ES 15 3-9.BASE UNIT (DVBU4B) 1two claws 1two claws S002 S001 cover (CAM) 2Up the SWITCH board in the direction of arrow A. Note: Take care not to break the shaft of the switch (S001, S002) when raising the SWITCH board. A C B 4limiter (L) 3screw (BVTT3 6) 5screw (BVTT3 6) 6limiter (R) 7Insert a taper driver into the cover (CAM), and rotate in the arrow B direction to raise the base unit (DVBU4B) in the arrow C direction. (Chuck release state) 8screw (PTPWH3 8) 0roller (L) 9Raising the stable lock (L/R) assy simultaneously in the arrow D direction, remove the base unit (DVBU4B) from t