Sony-SCD-XE670-Service-Manual电路原理图.pdf

SERVICE MANUAL SUPER AUDIO CD PLAYER US Model Canadian Model AEP Model UK Model SCD-XE670 Ver 1.0 2001.07 SPECIFICATIONS Model Name Using Similar MechanismNEW CD Mechanism TypeCDM66B-DVBU6A Base Unit NameDVBU6A Optical Pick-up NameKHM-230AAA 9-873-176-01Sony Corporation 2001G0500-1Home Audio Company C 2001.7Shinagawa 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 rate0.0020 % 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 rate0.0025 % or less Wow and flutterValue of measurable limit (0.001 % W. PEAK) or less Output connector ANALOG OUT DIGITAL (CD) OUT OPTICAL * PHONES *Output only the audio signals of the CD Load impedance Over 10 kilohms Wave length: 660 nm 32 ohms Jack type Phono jacks Square optical output connector Stereo phone jack Output level 2 Vrms (at 50 kilohms) 18 dBm 10 mW General Laser:Semiconductor laser (SACD: = 650 nm) (CD: = 780 nm) Emission duration: continuous Power requirements120 V AC, 60 Hz Power consumption26 W Dimensions (w/h/d)430 95 285 mm (w/h/d)(17 x 3 3/4 x 11 1/4 in.) incl. projecting parts Mass (approx.)3.9 kg (9 lbs 5 oz) Supplied accessories Design and specifications are subject to change without notice. This player comes with the following items: 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) Remote commander RM-SX700 (1) Size AA (R6) batteries (2) RadioFans.CN 收音机爱 好者资料库 2 SCD-XE670 TABLE OF CONTENTS 1.SERVICING NOTES.4 2.GENERAL.6 3.DISASSEMBLY 3-1.Disassembly Flow .8 3-2.Case (408226) .9 3-3.Front Panel Section .9 3-4.AUDIO Board, MAIN Board. 10 3-5. Mechanism Deck (CDM66B-DVBU6A) . 10 3-6.Base Unit (DVBU6A) . 11 4.TEST MODE. 12 5.DIAGRAMS 5-1.Block Diagram RF/SERVO Section . 26 5-2.Block Diagram SERVO Section . 27 5-3.Block Diagram MAIN Section . 28 5-4.Block Diagram AUDIO Section . 29 5-5.Block Diagram DISPLAY/KEY CONTROL/ POWER SUPPLY Section . 30 5-6.Note for Printed Wiring Boards and Schematic Diagrams . 31 5-7.Schematic Diagram RF Board . 32 5-8.Printed Wiring Boards RF/LOADING Boards . 33 5-9.Printed Wiring Board MAIN Board (Component Side) . 34 5-10. Printed Wiring Board MAIN Board (Conductor Side) . 35 5-11. Schematic Diagram MAIN (1/5)/LOADING Boards . 36 5-12. Schematic Diagram MAIN Board (2/5) . 37 5-13. Schematic Diagram MAIN Board (3/5) . 38 5-14. Schematic Diagram MAIN Board (4/5) . 39 5-15. Schematic Diagram MAIN Board (5/5) . 40 5-16. Schematic Diagram AUDIO/HEADPHONE Boards . 41 5-17. Printed Wiring Board AUDIO Board (Component Side) . 42 5-18. Printed Wiring Boards AUDIO (Conductor Side)/ HEADPHONE Boards . 43 5-19. Printed Wiring Boards DISPLAY/KEY Boards . 44 5-20. Schematic Diagram DISPLAY/KEY Boards . 45 5-21. Printed Wiring Boards POWER/POWER SW/PT Boards . 46 5-22. Schematic Diagram POWER/POWER SW/PT Boards . 47 5-23. IC Pin Function Description . 55 6.EXPLODED VIEWS 6-1.Case Section . 70 6-2.Front Panel Section . 71 6-3.Chassis Section . 72 6-4.Mechanism Deck Section (CDM66B-DVBU6A) . 73 6-5.Base Unit Section (DVBU6A). 74 7.ELECTRICAL PARTS LIST. 75 RadioFans.CN 收音机爱 好者资料库 3 SCD-XE670 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. 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. 4 SCD-XE670 (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 (11) MENU qj (10, 20) MULTI/2CH qk (9, 11) Multi-Channel indicator 7 PHONE LEVEL qf (25) PHONES jack qd PLAY MODE 2 (17, 18) POWER 1 (10) Remote sensor ql (6) REPEAT 3 (16) SACD/CD 5 (9, 11) TIME/TEXT 4 (11) Front Panel Rear Panel ANALOG 2CH OUT L/R jacks 1 (8) ANALOG 5.1CH OUT jacks 2 (6) DIGITAL (CD) OUT OPTICAL jack 3 (8) Mains lead 4 (8) BUTTON DESCRIPTIONS lAMSL dial qs (10, 11, 14, 15, 19, 20) A OPEN/CLOSE 8 (10, 18) H 9 (10, 15, 16, 17, 18) X 0 (11) x qa (11, 16, 19) m/M wa (15) 7 SCD-XE670 Remote Control AyB 8 (16) AMS ./ qa (14, 15, 17, 22) CHECK 9 (18) CLEAR qk (18) CONTINUE 2 (17, 18) DISPLAY MODE 3 (12) ENTER qj (22) INDEX /. qd (15) LEVEL ADJ ql (22) MULTI/2CH qh (9, 11) Number buttons 5 (14, 18) PROGRAM qf (18) REPEAT 7 (16) SACD/CD qg (9, 11) SHUFFLE 1 (17) TIME/TEXT 4 (11) BUTTON DESCRIPTIONS 10 6 (14, 18) H w; (10, 15, 16, 17, 18) X 0 (11) x wa (11, 16, 19) m/M qs (15) SCD-XE670 8 This set can be disassembled in the order shown below. 3-1.DISASSEMBLY FLOW SECTION 3 DISASSEMBLY 3-2. CASE (408226) (Page 9) 3-3. FRONT PANEL SECTION (Page 9) 3-6. BASE UNIT (DVBU6A) (Page 11) 3-5. MECHANISM DECK (CDM66B-DVBU6A) (Page 10) 3-4. AUDIO BOARD, MAIN BOARD (Page 10) SET SCD-XE670 9 BOTTOM VIEW 1tapering driver 2 4loading panel assy 3two claws Note:When the power supply does not turn on, rotate the cam with tepering driver (3 mm) as the figure shows, and the loading panel assy will be moved. qafront panel section 9screw (BV/RING) 6three connectors (CN453, 454, 881) 0two claws 8three screws (BVTP3 6) 0two claws 7lead with connector 5wire (flat type) (12 core) (CN706) 3-3.FRONT PANEL SECTION Note: Follow the disassembly procedure in the numerical order given. 3-2.CASE (408226) 1two screws (BVTP3 8) 3 3 2two screws (case 3 TP2) 2two screws (case 3 TP2) 4case (408226) SCD-XE670 10 3-4.AUDIO BOARD, MAIN BOARD 3-5.MECHANISM DECK (CDM66B-DVBU6A) 3four screws (BV/RING) 2four connectors (CN301, 304, 305, 306) 1two wires (flat type) (19 core) (CN302, 303) 6AUDIO board 4screw (BVTT3 6) 9three screws (BVTT3 6) 5PC board holder 7wire (flat type) (12 core) (CN706) 8connector (CN703) 9screw (BVTT3 6) 0MAIN board 8two connectors (CN704, 707) 7wire (flat type) (30 core) (CN708) 1tapering driver 2 4loading panel assy 5wire (flat type) (30core) (CN708) 6connector (CN151) 8CD mechanism deck (CDM66B-DVBU6A) BOTTOM VIEW 7three screws (BVTP3 8) 3two claws Note:When the power supply does not turn on, rotate the cam with tepering driver (3 mm) as the figure shows, and the loading panel assy will be moved. SCD-XE670 11 3-6.BASE UNIT (DVBU6A) 1floating screw (DIA. 12) 2 BOTTOM VIEW 3base unit (DVBU6A) base unit (DVBU6A) cam (66) 12 SCD-XE670 SECTION 4 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 servos are turned on 19ALL SRV OFFAll servos are turned offStop command in the test mode This set automatically executes self-diagnosis and various checks by entering the test mode. Note: This set automatically makes various adjustments according to the type of disc, thereby not requiring adjustment of the set when parts were replaced. However, be sure to execute 4-1. IC AND FLUO- RESCENT DISPLAY TUBE CHECK, 4-2. AUTO CHECK and 4- 7. WAVEFORMS CHECK. Disc for Test Mode Various checks of this set require the following discs. ModelType *1CategoryApplication MODEL SATD-S5 12 cm disc Adjusted value check, (J-2501-215-A) SL Reference disc Operation check, SATD-S4Optical waveform check (J-2501-184-A) Not specifiedDL12 cm discOperation check PATD-012 Adjusted value check, (4-225-203-01) CD 12 cm disc Operation check, YEDS-18Reference disc Optical waveform check (3-702-101-01) Not specifiedHYBRID 12 cm discOperation check *1 SL: Single Layer DL: Dual Layer Setting Method of Test Mode Turn the POWER switch on while pressing the AMS dial and the MENU button. Release the MENU button and the AMS dial in this order when “Test Mode Menu” is displayed on the fluorescent indicator tube. (If the AMS dial is released first, the test mode becomes active but “Test Mode Menu” is not displayed) Releasing Method of Test Mode To release the test mode, turn the POWER switch off. Selection/Entry of Test Mode To select and enter the “Test Mode Menu”, operate as follows. 1.Rotate the AMS dial to select the menu, and press the AMS dial to enter. 2.The test is switched on or off alternately each time the AMS dial is pressed. 3.To return to the previous step, rotate the AMS dial to select the desired item, and press the AMS dial to enter. lL lL lL lL lL lL lL lL 13 SCD-XE670 FOCUS command (2X): Focus related. (All servos must be already turned on (except command 21) No.NameDescriptionRemarks 21FSRCH ON/OFFThe continuous vertical motion of the optical pick-up lens is turned on orAvoid a long-time use off 22F-BIAS UPIncrease focus biasFocus bias value 23F-BIAS DOWNDecrease focus biasFocus bias value 24ADJ FCSBIASThe focus bias is adjusted automatically Both + and - directions are searched to search for best jitter point 25FGAIN UP/DWThe focus servo gain is switched between normal and downNormal or down are switched alternately 26FJMP UP/DWNFocus jump is executedValid only for DL UP: layer 0t1, DOWN: layer 1t0 27FOCUS AGCThe focus servo gain is adjusted automatically 28DISP FBdataThe focus bias adjusted value is displayedHexadecimal display 9 bit data Note: On or off and up or down are switched alternately OFFSET (PI, FE, TE) command (3X): Adjusts the offset of PI, FE and TE signals. No.NameDescriptionRemarks 31PI/FE OFSETAdjusts the offset of PI, FE and TE signalsTE offset adjustment is executed for the CD This adjustment must be executed after 61 DISC DETECTonly TRACKING command (4X): Tracking servo related. No.NameDescriptionRemarks 41TGAIN NM/UPThe tracking servo gain is switched between normal and upNormal or up are switched alternately 44ADJ TRK DSPThe traverse AGC and E-F balance adjustment is performed 45TRACKIN