Sony-SCDXB940-cd-sm维修电路原理图.pdf

《Sony-SCDXB940-cd-sm维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《Sony-SCDXB940-cd-sm维修电路原理图.pdf（73页珍藏版）》请在收音机爱好者资料库上搜索。

1、SERVICE MANUAL SUPER AUDIO CD PLAYER AEP Model UK Model SPECIFICATIONS SCD-XB940 Model Name Using Similar MechanismNEW CD Mechanism TypeCDM55B-DVBU3 Base Unit NameDVBU3 Optical Pick-up NameKHM-220AAA/J1N Continued on next page Photo: Black type Ver 1.1 2002.05 9-929-212-12Sony Corporation 2002E0500-

2、1Home Audio Company C 2002.05Published by Sony Engineering Corporation RadioFans.CN 收音机爱 好者资料库 2 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

3、SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB- LISHED BY SONY. 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 te

4、mperature 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 procedu

5、res other than those specified herein may result in hazardous ra- diation exposure. RadioFans.CN 收音机爱 好者资料库 3 TABLE OF CONTENTS 1.SERVICING NOTES.4 2.GENERAL.5 3.DISASSEMBLY.8 4.DIAGRAMS 4-1.Notes for Printed Wiring Board and Schematic Diagram . 11 4-2.Printed Wiring Board TK Board . 12 4-3.Schemati

6、c Diagram TK Board . 13 4-4.Printed Wiring Board MAIN Board (Component Side) . 14 4-5.Printed Wiring Board MAIN Board (Conductor Side) . 15 4-6.Schematic Diagram MAIN Board (1/6) . 16 4-7.Schematic Diagram MAIN Board (2/6) . 17 4-8.Schematic Diagram MAIN Board (3/6) . 18 4-9.Schematic Diagram MAIN B

7、oard (4/6) . 19 4-10. Schematic Diagram MAIN Board (5/6) . 20 4-11. Schematic Diagram MAIN Board (6/6) . 21 4-12. Printed Wiring Board AUDIO Board . 22 4-13. Schematic Diagram AUDIO Board . 23 4-14. Printed Wiring Board HP Board . 24 4-15. Schematic Diagram HP Board . 24 4-16. Printed Wiring Board L

8、OADING Board . 25 4-17. Schematic Diagram LOADING Board . 25 4-18. Printed Wiring Board DISPLAY Board . 26 4-19. Schematic Diagram DISPLAY Board . 27 4-20. Printed Wiring Board POWER Board . 28 4-21. Schematic Diagram POWER Board . 29 4-22. Printed Wiring Boards AC SW/TRANSFORMER Boards . 30 4-23. S

9、chematic Diagram AC SW/TRANSFORMER Boards . 31 5.EXPLODED VIEWS. 36 6.ELECTRICAL PARTS LIST. 40 4 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. D

10、uring 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

11、 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 Back Panel SECTION 1 SERVICING NOTES NOTES ON HANDLING THE OPTICAL PI

12、CK-UP BLOCK OR BASE UNIT Part No. HOW TO OPEN THE TRAY WHEN POWER SWITCH TURNS OFF There are two different methods to open the tray. Method-1 Insert a screw driver (3) into the aperture of the unit bottom, and turn it in the direction of the arrow (to OUT direction). tray screw driver (3) *To close

13、the disc table, turn the screw driver (3) in the reverse direction (to IN direction). ModelPart No. AEP4-227-711-0s UK4-227-711-1s tray A B cam (CDM55) screw driver (3) Method-2 1 Insert a screw driver (3) into the aperture of the unit bottom, and move the cam (CDM55) in the direction of arrow A. 2

14、Pull the tray in the direction of arrow B. ABOUT THE “E01” DISPLAY “E01” is displayed when the above occurs in communication with a system controller (IC605) and a display controller (IC203) at the time of starting. In this case, please check soldering, disconnection, etc. of each IC. Ver 1.1 5 SECT

15、ION 2 GENERAL This section is extracted from instruction manual. 6 7 8 4 connector (CN992) 4 connector (CN351) 7 two claws 2 loading panel assy qd front panel section 9 knob (AMS) 6 seven screws (BV/RING) qa connector (CN201) qs DISPLAY board q; eight screws (BVTP2.6 8) 7 two claws 3 wire (flat type

16、) (10 core) (CN601) 5 holder 1 Pull out the tray. (Refer to page 4, “HOW TO OPEN THE TRAY WHEN POWER SWITCH TRANS OFF”.) q; five screws (BVTP2.6 8) 8 COVER (4095269) FRONT PANEL SECTION Note: Follow the disassembly procedure in the numerical order given. SECTION 3 DISASSEMBLY 1 two screws 1 two scre

17、ws 1 two screws 1 two screws 3 cover (4095269) 2 2 9 AUDIO/MAIN BOARD MECHANISM DECK (CDM55B-DVBU3) 6 three connectors (CN301, 304, 351) 2 two wires (flat type) (18 core) (CN602, 603) 3 two connectors (CN605, 610) 4 five screws (BVTT3 8) 5 MAIN board 9 two PC board holders 7 three screws (BV/RING) 2

18、 wire (flat type) (10 core) (CN601) 2 two wires (flat type) (16 core) (CN608, 611) q; AUDIO board 8 screw (BVTT3 8) 1 Pull out the tray. (Refer to page 4, “HOW TO OPEN THE TRAY WHEN POWER SWITCH TRANS OFF”.) 5 screw (BVTT3 8) 6 mechanism deck (CDM55B-DVBU3) 4 connector (CN605) 3 two wires (flat type

19、) (18 core) (CN602, 603) 2 loading panel assy 1 Pull out the tray. (Refer to page 4, “HOW TO OPEN THE TRAY WHEN POWER SWITCH TRANS OFF”.) 10 TRAY 1 Remove the tray. (Careful of the claw.) claw claw 1111 SECTION 4 DIAGRAMS 4-1.NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS Note on Printed Wiri

20、ng Board: X : parts extracted from the component side. Y : parts extracted from the conductor side. a: Through hole. b : Pattern from the side which enables seeing. (The other layers patterns are not indicated.) Caution: Pattern face side:Parts on the pattern face side seen from (Conductor Side)the

21、pattern face are indicated. Parts face side:Parts on the parts face side seen from (Component Side)the parts face are indicated. Main board is multi-layer printed board. However, the patterns of intermediate-layer have not been in- cluded in the diagram. Indication of transistor C B These are omitte

22、d. E Q Note on Schematic Diagram: All capacitors are in F unless otherwise noted. pF: F 50 WV or less are not indicated except for electrolytics and tantalums. All resistors are in and 1/4 W or less unless otherwise specified. f: internal component. 5 : fusible resistor. C : panel designation. U : B

23、+ Line. V : B Line. Voltages and waveforms are dc with respect to ground under no-signal conditions. no mark : STOP Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal produc- tion tolerances. Waveforms are taken with a oscilloscope. Voltage variations

24、 may be noted due to normal produc- tion tolerances. Circled numbers refer to waveforms. Signal path. J: SACD c: CD I : DIGITAL OUT Circuit Boards Location TRANSFORMER board POWER board TK board AUDIO board MAIN boardDISPLAY board LOADING board HP board AC SW board Note: The components identified by

25、 mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. 1212 SCD-XB940 4-2.PRINTED WIRING BOARD TK Board See page 11 for Circuit Boards Location. (Page 14) (Page 14) 1313 SCD-XB940 4-3.SCHEMATIC DIAGRAM TK Board See page 32 for Waveforms. The components i

26、dentified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. (Page 16) (Page 16) 1414 SCD-XB940 4-4.PRINTED WIRING BOARD MAIN Board (Component Side) See page 11 for Circuit Boards Location. Semiconductor Location Ref. No.Location IC605G-7 IC607F-4

27、IC612D-6 IC617B-6 IC621B-7 IC622D-3 IC632D-9 (Page 12) (Page 12) (Page 28) (Page 25) (Page 26) (Page 22)(Page 22) 1515 SCD-XB940 4-5.PRINTED WIRING BOARD MAIN Board (Conductor Side) See page 11 for Circuit Boards Location. Semiconductor Location Ref. No.Location D600G-3 D604G-3 D605E-3 D606G-2 D607E

28、-2 D608G-2 D609G-3 D610G-3 D612G-9 IC600G-6 IC606G-6 IC609D-9 IC610F-4 IC613G-4 IC614F-2 IC615G-2 IC616C-2 IC618C-4 IC619E-1 IC620A-4 IC623C-6 IC624A-7 IC625B-6 IC627B-4 IC628D-3 IC629B-4 IC630B-4 Q601G-3 Q602E-4 Q603F-4 1616 SCD-XB940 4-6.SCHEMATIC DIAGRAM MAIN Board (1/6) See page 32 for Waveforms

29、. (Page 29) (Page 13) (Page 13) (Page 27) (Page 19)(Page 20) (Page 21) (Page 20) (Page 20) (Page 17) (Page 18) 1717 SCD-XB940 4-7.SCHEMATIC DIAGRAM MAIN Board (2/6) (Page 16) (Page 20) (Page 21) (Page 18) (Page 21) 1818 SCD-XB940 4-8.SCHEMATIC DIAGRAM MAIN Board (3/6) See page 32 for Waveforms. See

30、page 34 for IC Block Diagram. (Page 16) (Page 17) (Page 19) (Page 20) (Page 21) (Page 23) (Page 23) (Page 25) 1919 SCD-XB940 4-9.SCHEMATIC DIAGRAM MAIN Board (4/6) See page 32 for Waveform. (Page 16) (Page 18) (Page 20) 2020 SCD-XB940 4-10. SCHEMATIC DIAGRAM MAIN Board (5/6) (Page 16) (Page 19) (Pag

31、e 17)(Page 16)(Page 16) (Page 18) (Page 21) 2121 SCD-XB940 4-11. SCHEMATIC DIAGRAM MAIN Board (6/6) See page 32 for Waveforms. See page 34 for IC Block Diagram. (Page 17) (Page 16) (Page 17) (Page 20) (Page 18) 2222 SCD-XB940 4-12. PRINTED WIRING BOARD AUDIO Board See page 11 for Circuit Boards Loca

32、tion. Semiconductor Location Ref. No.Location D302C-2 D303F-2 D321E-13 IC301E-17 IC302E-11 IC303F-11 IC304C-11 IC305B-11 IC306C-19 IC307E-6 IC308A-6 IC309C-18 IC331C-3 IC352A-16 IC401F-15 IC402D-9 IC403D-7 IC501C-14 IC502B-9 IC503B-7 Q301F-1 Q302F-2 Q303F-3 Q351A-19 Q403C-2 Q503C-2 (Page 28) (Page 2

33、4) (Page 14)(Page 14) (Page 28) 2323 SCD-XB940 4-13. SCHEMATIC DIAGRAM AUDIO Board See page 32 for Waveforms. See page 34 for IC Block Diagrams. The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. (Page 29) (Page 18) (Page

34、18) (Page 29) (Page 24) 2424 SCD-XB940 4-14. PRINTED WIRING BOARD HP Board See page 11 for Circuit Boards Location.4-15. SCHEMATIC DIAGRAM HP Board (Page 22) (Page 23) 2525 SCD-XB940 4-16. PRINTED WIRING BOARD LOADING Board See page 11 for Circuit Boards Location.4-17. SCHEMATIC DIAGRAM LOADING Boar

35、d 05 (OPEN/CLOSE) (Page 14) (Page 18) 2626 SCD-XB940 4-18. PRINTED WIRING BOARD DISPLAY Board See page 11 for Circuit Boards Location. Semiconductor Location Ref. No.Location D201A-3 IC201C-9 IC202C-6 IC203B-4 IC271A-4 Q201C-7 Q202C-7 Q203C-7 (Page 14)(Page 28) 2727 SCD-XB940 4-19. SCHEMATIC DIAGRAM

36、 DISPLAY Board See page 32 for Waveforms. (Page 29) (Page 16) 2828 SCD-XB940 4-20. PRINTED WIRING BOARD POWER Board See page 11 for Circuit Boards Location. Semiconductor Location Ref. No.Location D901E-5 D902E-5 D903E-4 D904E-4 D905D-3 D906D-3 D907D-3 D908D-3 D909D-2 D910D-2 D911D-2 D912D-2 D913D-2

37、 D914D-2 D915D-1 D916D-1 D917E-2 D918E-1 D919E-1 D920E-1 D921A-2 D922A-3 IC903B-5 IC904C-3 IC905C-1 IC906C-5 IC907C-2 Q921A-2 (Page 30)(Page 30) (Page 22) (Page 26) (Page 14)(Page 22) 2929 SCD-XB940 4-21. SCHEMATIC DIAGRAM POWER Board The components identified by mark 0 or dotted line with mark 0 ar

38、e critical for safety. Replace only with part number specified. (Page 27) (Page 16) (Page 23) (Page 23) (Page 31) (Page 31) 3030 SCD-XB940 4-22. PRINTED WIRING BOARDS AC SW/TRANSFORMER Boards See page 11 for Circuit Boards Location. TO TRANSFORMER BOARD TO AC SW BOARD (Page 28) (Page 28) 3131 SCD-XB

39、940 4-23. SCHEMATIC DIAGRAM AC SW/TRANSFORMER Boards The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. (Page 29) (Page 29) 3232 Waveforms TK Board 1 IC001 el (TE) (CD PLAY) 2 IC001 r; (FE) (CD PLAY) 3 IC001 tf (SIGO) (CD

40、PLAY) Approx. 100 mVp-p Approx. 60 mVp-p Approx. 1.4 Vp-p 2 IC607 yk (ADC1) (CD PLAY) 3 IC607 yl (ADC0) (CD PLAY) MAIN Board 1 IC607 z/, (X2/CLKIN) 4 IC605 tf (X0) 5 IC617 5 (SDCK) 3.5 Vp-p 27 MHz Approx. 60 mVp-p Approx. 100 mVp-p 3.5 Vp-p 12.5 MHz 4 Vp-p 296 ns 7 IC617 rh (BCKA) 8 IC621 8 (X2Q) 6

41、IC617 rs (BCKD) 9 IC621 qa (2CK) q; IC623 1 2.1 Vp-p 88.5 ns 3.8 Vp-p 177 ns 3.7 Vp-p 354 ns 3.1 Vp-p 177 ns 3.4 Vp-p 354 ns qa IC617 qf (MCKI) IC622 zxc (SCKI), IC623 8 qs IC622 ql (RFIN2) (CD PLAY) qd IC622 oa (SDCK) 2 IC301 rf (LVCKO2), IC309 1 (CLK) 3 IC301 rl (BCKI) AUDIO Board 1 IC301 qs (XOUT

42、) 4 IC301 t; (LRCKI) 5 IC301 ta (SBCKI) 6 IC309 5 (Q) qf IC622 z/, (BCLK) qg IC622 z/. (LRCK) 2.9 Vp-p 29.5 ns Approx. 1.4 Vp-p 3.8 Vp-p 296 ns 3.4 Vp-p 354 ns 3.5 Vp-p 22.7 s 1.7 Vp-p 45 MHz 3.2 Vp-p 88.5 ns 3.4 Vp-p 354 ns 3.5 Vp-p 22.7 s 3.4 Vp-p 354 ns 4.4 Vp-p 177 ns 33 2 IC203 ea (EXTAL) DISPL

43、AY Board 1 IC201 tk (OSCO) 4.1 Vp-p 484 ns 3.8 Vp-p 8 MHz 34 IC Block Diagrams MAIN Board IC621SN74LV74APWR IC628MSM54V16258BSL-40TS-K 14 1234567 13 12 111098 VCC GND CK CLR CK CLR Q PR Q Q PR Q D D NC A8 A7 A6 A5 A4 VSS A0 A1 A2 A3 VCC VCC DQ0 DQ1 DQ2 DQ3 VCC DQ4 DQ5 DQ6 DQ7 WE RAS NC 282627232425

44、182019222121436587109 VSS DQ15 DQ14 DQ13 DQ12 VSS DQ11 DQ10 DQ9 DQ8 4344414239403738353631 I/O SELECTOR OUTPUT BUFFER INPUT BUFFER OUTPUT BUFFER INPUT BUFFER SENSE AMPLIFIER COLUMN DECODERS MEMORY CELLS WORD DRIVERS ROW DECODERS COLUMN ADDRESS BUFFERS LCAS 30 UCAS 29 OE I/O CONTROLLER I/O CONTROLLER

45、 15 161711 14 NC 34 32 ROW ADDRESS BUFFERS INTERNAL ADDRESS COUNTER REFRESH CONTROL CLOCK TIMING GENERATOR 35 AUDIO Board IC309TC7W74F IC401, 501CXA8042AS 6 CLR 7 PR 8 VCC 5 Q RSQ 3 Q 2 D 4 GND 1 CK QDC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 SWITCHING CIRCUIT CONS

46、TANT CURRENT CIRCUIT REFERENCE VOLTAGE CIRCUIT CONTROL CIRCUIT I01+IN2 IN2+ NC IN1+ IN1 NC C4 C3 GND2 VEE2 VEE1 C6 C5 CIREF I02 NC I01 I02+ NC VCC2 C2 C1 VCC1 VREF VCNT GND1 RIREF 36 (1)COVER SECTION SECTION 5 EXPLODED VIEWS The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Items marked “*” are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. The mechanical parts with