Sony-SCD-CE775-Service-Manual电路原理图.pdf

SERVICE MANUAL SUPER AUDIO CD PLAYER US Model Canadian Model SCD-CE775 Ver 1.0 2001.05 SPECIFICATIONS Model Name Using Similar MechanismNEW CD Mechanism TypeCDM59A-DVBU5A Base Unit NameDVBU5A Optical Pick-up NameKHM-230AAA 9-873-915-11Sony Corporation 2001E0500-1Home Audio Company C 2001.5Shinagawa Tec Service Manual Production Group When a super audio CD is played Playing frequency range2 Hz to 100 kHz Frequency response2 Hz to 50 kHz ( 3 dB) Dynamic range103 dB or more Total harmonic distortion rate 0.0020 % 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 range98 dB or more Total harmonic distortion rate 0.0025 % or less Wow and flutterValue of measurable limit (0.001 % W. PEAK) or less Output connector *Output only the audio signals of the CD General LaserSemiconductor laser (SACD: = 650 nm) (CD: = 780 nm) Emission duration: continuous 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 Power consumption25 W Dimensions (w/h/d)430 108 400 mm (17 4 1/4 15 3/4 in.) incl. projecting parts Mass (approx.)5.9 kg (13 lbs 1 oz.) Supplied accessories 10 mW Load impedance ANALOG OUT DIGITAL (CD) OUT OPTICAL* Phono jacks Jack type 2 Vrms (at 50 kilohms) Square optical output connector 18 dBm Over 10 kilohms Light emitting wave length: 660 nm Output level ( ) PHONESStereo phone jack 32 ohms Design and specifications are subject to change without notice. Audio connecting cord phono jack 2 (Red and White) y phono jack 2 (Red and White) (2) phono jack 1 (Black) y phono jack 1 (Black) (2) Monaural (2P) mini plug cord (1) (Connecting cord for CONTROL A1 ) (supplied for Canadian models only) Remote commander (remote) RM SC500 (1) R06 (size AA) batteries (2) RadioFans.CN 收音机爱 好者资料库 2 SCD-CE775 TABLE OF CONTENTS 1.SERVICING NOTES.4 2.GENERAL.6 3.DISASSEMBLY 3-1.Disassembly Flow .9 3-2.Case (409538) . 10 3-3.Front Panel Section . 10 3-4.CD Mechanism Deck (CDM59A-DVBU5A) . 11 3-5.AUDIO Board . 11 3-6.POWER Board . 12 3-7.MAIN Board . 12 3-8.Base Unit (DVBU5A) . 13 3-9.Table Assy . 13 3-10. SENSOR Board. 14 3-11. LOADING MOTOR Board . 14 4.ASSEMBLY. 15 5.TEST MODE. 16 6.DIAGRAMS 6-1.Block Diagram RF/SERVO Section . 30 6-2.Block Diagram SERVO Section . 31 6-3.Block Diagram MAIN Section . 32 6-4.Block Diagram AUDIO Section . 33 6-5.Block Diagram DISPLAY/KEY CONTROL/ POWER SUPPLY Section . 34 6-6.Notes for Printed Wiring Boards and Schematic Diagrams . 35 6-7.Printed Wiring Board RF Board . 36 6-8.Schematic Diagram RF Board . 37 6-9.Printed Wiring Boards MOTOR/SENSOR Section . 38 6-10. Schematic Diagram MOTOR/SENSOR Section . 39 6-11. Printed Wiring Board MAIN Board (Component Side) . 40 6-12. Printed Wiring Board MAIN Board (Conductor Side) . 41 6-13. Schematic Diagram MAIN Board (1/5) . 42 6-14. Schematic Diagram MAIN Board (2/5) . 43 6-15. Schematic Diagram MAIN Board (3/5) . 44 6-16. Schematic Diagram MAIN Board (4/5) . 45 6-17. Schematic Diagram MAIN Board (5/5) . 46 6-18. Schematic Diagram AUDIO/HEADPHONE Boards . 47 6-19. Printed Wiring Board AUDIO Board (Component Side) . 48 6-20. Printed Wiring Boards AUDIO (Conductor Side)/ HEADPHONE Boards . 49 6-21. Printed Wiring Boards DISPLAY/KEY/LED Boards . 50 6-22. Schematic Diagram DISPLAY/KEY/LED Boards . 51 6-23. Printed Wiring Boards POWER/REG Boards . 52 6-24. Printed Wiring Boards POWER SW/PT Boards . 53 6-25. Schematic Diagram POWER/POWER SW/PT/REG Boards . 54 6-26. IC Pin Function Description . 63 7.EXPLODED VIEWS 7-1.Case Section . 79 7-2.Front Panel Section . 80 7-3.Chassis Section . 81 7-4.CD Mechanism Deck Section-1 (CDM59A-DVBU5A). 82 7-5.CD Mechanism Deck Section-2 (CDM59A-DVBU5A). 83 7-6.Base Unit Section (DVBU5A). 84 8.ELECTRICAL PARTS LIST. 85 RadioFans.CN 收音机爱 好者资料库 3 SCD-CE775 This label is located on the LEFT exterior. 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. 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” 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) 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 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. 4 SCD-CE775 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. LASER DIODE AND FOCUS SEARCH OPERATION CHECK Carry out the “S curve check” in “CD section adjustment” and check that the S curve waveforms is output three times. 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. CHECKING SIGNALS OF CD SECTION Efficiency to check each signal of CD section is increased when the test points on the MAIN board are used. Refer to 5-8. WAVEFORMS CHECK (28 page) NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT SECTION 1 SERVICING NOTES table tapering driver *To close the disc table, turn the tapering driver in the reverse direction (to IN direction). HOW TO OPEN THE DISC TABLE WHEN POWER SWITCH TURNS OFF Insert a tapering driver into the aperture of the unit bottom, and turn it in the direction of the arrow (to OUT direction). 5 SCD-CE775 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 lAMSL dial clockwise by one click, you go to the succeeding track. qs CONTINUE button (11) Press to resume normal play from Shuffle Play or Program Play. qd SHUFFLE button (19) Press to select Shuffle Play. qf PROGRAM button (20) Press to select Program Play. qg REPEAT button (18) Press repeatedly to play all tracks or only one track on the disc. qh TIME/TEXT button (13) Each time you press the button, the playing time of the track, the total remaining time on the disc, or TEXT information appears in the display. qj Disc tray (11) Press A OPEN/CLOSE to open/close the disc tray. qk MULTI CHANNEL DECODING indicator Turns on when you turn on the player, or when the Multi-channel Super Audio CD is loaded and select the Multi-channel playback area by pressing MULTI/ 2CH. ql m/M buttons (17) Press to locate a portion you want to play within a track. w; MENU button (6) Press to enter the menu. wa SACD/CD button (with an LED) (12) Each time you press the button while the Hybrid disc (page 10) is loaded, the layer changes between an HD (SACD) layer (the LED turns on) and CD layer (the LED turns off). ws PHONES jack Connect the headphones. During playback of a Multi-channel Super Audio CD, the same signal that is output from the ANALOG 5.1CH FRONT L/R jacks is output from the PHONES jack. wd PHONES LEVEL control Adjust the headphones volume. wf A OPEN/CLOSE button (11) Press to open/close the disc tray. SECTION 2 GENERAL This section is extracted from instruction manual. 7 SCD-CE775 Remote Parts Descriptions CONTINUE SHUFFLE PLAY MODE PROGRAM SACD/CD MULTI 2CH 123 456 78 10/0 9 SPACE T ME/TEXT CAPS DISC REPEATCHECK AMS CLEAR LEVEL 10ENTER MODE DISPLAY INPUT NAME DISC SK P + ADJ CD1 ABCDEFclamp e c c d d e qabracket (guide) gear (loading C) 7two screws (BTTP M2.6) 5screw (BTTP M2.6) 6bracket (guide)2two screws (BTTP M2.6) 1Slide the tray until the screw that fixes the bracket (guide) can be seen through a round hole , in the table assy. 3 8bracket (guide 2) 4wire (flat type) (6 core) (CN15) SCD-CE775 14 3-10. SENSOR BOARD 3-11. LOADING MOTOR BOARD 1screw (PTPWH M2.6) 3belt (rotary) 4two screws (BTTP M2.6) 4two screws (BTTP M2.6) 5SENSOR board 2tray 3two screws (BTTP M2.6) 4LOADING MOTOR board 1belt (loading) 2connector (CN13) SCD-CE775 15 SECTION 4 ASSEMBLY Note: Follow the assembly procedure in the numerical order given. ADJUSTING PHASE OF SWING GEAR AND GEAR (U/D) 6 screw (PTPWH M2.6) 5 stopper washer (FR) 4 Push fully the shaft of shaft gear and align the hole shape of gear (loading B). 3 Let the swing gear through under the chassis and engage its dowel with the groove of rotary encoder. 2 Install the rotary encoder so that its groove comes to the position shown in the figure. 1 Insert the shaft gear up to the position where its shaft comes out by 5 mm. g g h h f f f 7 gear (U/D) 8 screw (PTPWH M2.6) q; screw (PTPWH M2.6) circle mark circle mark swing gear gear (RV) Fig. A 9 gear (RV) Note: Align swing gear, a circle mark on the gear (U/D), and the teeth of gear (RV) to the position showing in the Fig. A. 16 SCD-CE775 SECTION 5 TEST MODE Test Mode Command List The contents of test mode are as follows. Note: Wrong operation in the test mode causes a trouble, thus requiring extreme care. LINE command (1X): Use mainly for a manufacturing line. No.NameDescriptionRemarks 05DSP MON1XUGF, XPCK, C2PO outputted from IC509 (CD DSP)Not used for the servicing 06DSP MON2MNT0, MNT1, MNT2, MNT3 outputted from IC509 (CD DSP)Not used for the servicing 07DSP MON3RFCK, XPCK, XROF, GTOP outputted from IC509 (CD DSP)Electrical measurement, CD CLV jitter measurement STANDARD command (1X): Use when the servo is applied by manual operation. No.NameDescriptionRemarks 12LD ON/OFFThe laser diode is turned on or offOn or off are switched alternately 13SPIN ON/OFFThe spindle motor is rotated with the regulated voltageOn or off are switched alternately 14FSRV ON/OFFThe focus servo is turned on or offOn or off are switched alternately 15TSRV ON/OFFThe tracking servo is turned on or offOn or off are switched alternately 16CLV ON/OFFThe spindle SLV servo is turned on or offOn or off are switched alternately Focus and tracking servos must be already turned on 17SSRV ON/OFFThe sled servo is turned on or offOn or off are switched alternately Focus, tracking and spindle servos must be already turned on 18ALL SRV ONAll ser