Sony-SCD-XE670-Service-Manual电路原理图.pdf
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1、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
2、 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)
3、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 th
4、e 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 requirements1
5、20 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 connec
6、ting 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
7、.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.Bloc
8、k 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
9、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
10、-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
11、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
12、(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
13、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 p
14、erformance 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
15、” 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
16、.). 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
17、 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 batt
18、ery 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 MARQU
19、E 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
20、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.
21、 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
22、.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
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