Sony-CDPCX55-cd-sm 电路图 维修手册.pdf

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1、 1 SPECIFICATIONS Model Name Using Similar MechanismCDP-CX50/CX571 CD Mechanism TypeCDM-46TE Base Unit TypeKSM-213BFN/M-NP Optical Pick-up TypeKSS-213B/S-N SERVICE MANUAL MICROFILM COMPACT DISC PLAYER CDP-CX55 US Model Canadian Model AEP Model UK Model E Model Australian Model PX Model RadioFans.CN

2、收音机爱 好者资料库 2 TABLE OF CONTENTS 1. SERVICING NOTE. 3 2. GENERAL. 6 3. DISASSEMBLY 3-1. Front Panel .16 3-2. Illumination ASSY.16 3-3. CD Mechanism Deck .17 3-4. Base Unit and Magnet Holder. 17 3-5. CD Mechanism Section .18 4. TEST MODE.19 5. MECHANICAL ADJUSTMENTS. 22 6. ELECTRICAL ADJUSTMENTS. 25 7.

3、 DIAGRAMS 7-1. Circuit Boards Location.28 7-2. IC Block Diagrams . 30 7-3. Block Diagrams BD Section. 33 Main Section.35 7-4. Printed Wiring Board BD Section .37 7-5. Schematic Diagram BD Section . 39 7-6. Printed Wiring Board Audio Section . 41 7-7. Schematic Diagram Audio Section . 43 7-8. Printed

4、 Wiring Board Main Section .45 7-9. Schematic Diagram Main Section .47 7-10. Printed Wiring Board Display Section . 49 7-11. Schematic Diagram Display Section . 51 7-12. Printed Wiring Board Sensor, Motor Section .53 7-13. Schematic Diagram Sensor, Motor Section . 54 7-14. IC Pin Functions. 55 8. EX

5、PLODED VIEWS 8-1. Case Section. 59 8-2. Front Panel Section . 60 8-3. Chassis Section . 61 8-4. Mechanism Deck Section 1 (CDM-46TE) .62 8-5. Mechanism Deck Section 2 (CDM-46TE) .63 8-6. Optical Pick-up Section (KSM-213 BFN/M-NP). 64 9. ELECTRICAL PARTS LIST.65 CAUTION Use of controls or adjustments

6、or performance of procedures other than those specified herein may result in hazardous ra- diation exposure. The laser component in this product is capable of emitting radiation exceeding the limit for Class 1. This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKIN

7、G is located on the rear exterior. This caution label is located inside the unit. MODEL IDENTIFICATION BACK PANEL 4-991-160-0 4-991-160-1 4-991-160-2 4-991-160-3 4-991-160-4 4-991-160-5 4-991-160-6 PARTS No.MODEL US model Canadian model AEP model Australian model E, PX model Singapore model UK model

8、 RadioFans.CN 收音机爱 好者资料库 3 SAFETY CHECK-OUT After correcting the original service problem, perform the follow- ing safety checks 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 leak

9、age as described below. LEAKAGE 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 microampers). Leak- age current can be measured by any one of three methods. 1. A commercial l

10、eakage 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 batte

11、ry-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 2V AC range are suitable. (See Fig. A

12、) Fig. A. Using an AC voltmeter to check AC leakage. To Exposed Metal Parts on Set 0.15F1.5k AC voltmeter (0.75V) Earth Ground NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electrostatic breakdown because of the potential difference

13、generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic breakdown 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. NOTE

14、S 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 emission, ob- serve from more than 30 cm away from the objective lens. LASER D

15、IODE AND FOCUS SEARCH OPERATION CHECK Carry out the “S curve check” in “CD section adjustment” and check that the S curve waveform is output repeatedly. SECTION 1 SERVICING NOTE SAFETY-RELATED COMPONENT WARNING ! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AN

16、D 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 PUBLISHED BY SONY. ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFIS PAR UNE MARQUE ! SUR LES DIAGRAMMES SCHMATIQUES

17、 ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PICES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPLMENTS PUBLIS PAR SONY. RadioFans.CN 收音机爱 好者资料库 4 CD-TEXT TEST DISC This unit is able to display the test data (charact

18、er information) written in the CD on its fluorescent indicator tube. The CD-TEXT TEST DISC (TGCS-313:4-989-366-01) is used for checking the display. To check, perform the following procedure. Checking Method: 1. Turn ON the power, set the disc on the disc table with the side labeled as “test disc” a

19、s the right side, close the front cover, and chuck the disc. 2. Press the ” button and play back the disc. 3. The following will be displayed on the fluorescent indicator tube. Display : 1kHz/0 dB/ L ?(38h to 3Fh) A B C D E F G(40h to 47Fh) H I J K L MNO(48h to 4Fh) P QR S T U VW(50h to 57Fh) X Y Z

20、_(58h to 5Fh) a b c d e f g(60h to 57Fh) h i j k l m n o(68h to 6Fh) p q r s t u v w(70h to 77Fh) x y z I (78h to 7Fh) i (A0h to A7h) 8859-1 C PR (A8h to AFh) 23 (B0h to B7h) 1 (B8h to BFh) (C0h to C7Fh) (C8h to CFh) D (C0h to C7Fh) Y(D8h to DFh) (E0h to E7Fh) (E8h to FFh) (F0h to F7Fh) y(F8h to FFF

21、h) No.66 No.67 to No.99 1 4 1 2 3 4 1 4 1 2 3 4 6 SECTION 2 GENERAL LOCATION OF PARTS AND CONTROLS Front Panel 2345678 This section is extracted from instruction manual. 19 10 11 12 13 20 21 22 191817161514 1 POWER switch 2 Front cover 3 CONTINUE button 4 Display window 5 SHUFFLE button 6 PROGRAM bu

22、tton 7 REPEAT button 8 TIME/TEXT button 9 INPUT button 10 DISC/CHARACTER/PUSH ENTER knob 11 SEARCH button 12 CHECK button 13 CLEAR button 14 button 15 button 16 p button 17 P button 18 button 19 PLUS ONE button 20 X-FADE button 21 NO DELAY button 22 MEGA CONTROL button 7 8 9 10 11 12 13 14 15 16 SEC

23、TION 3 DISASSEMBLY Note : Follow the disassembly procedure in the numerical order given. 3-1. FRONT PANEL 3-2. ILLUMINATION ASSY D A B C While pressing arrows A, B, and C, rotate the illumination assembly in arrow direction D and remove it. ILLUMINATION ASSY 2Screw (BVTT3x6) 1Screw (BVTT3x6) 5 Brack

24、et (illumination) (with illumination assy) 4Two screws (BVTT3x6) !Claw Expand the front panel in the direction of arrow A to release catching claws. A 6Screw (BVTT3x6) 7Beam B MAIN board: CN503 !Claw Expand the front panel in the direction of arrow B to release catching claws. !Front panel 8Flat typ

25、e wire (21 core) 9Three screws (BVTT3x6) 3Connector LED board: CNP841 To AUDIO board 17 3-3. CD MECHANISM DECK 5Two screws (BVTT3x10) !Connector TABLE SENSOR board: CN52 !Screw (BVTT3x10) 1Screw (PTPWH2.6x8) 2Table (50) 3Two screws (BVTP3x8) 4Ring (B) !CD mechanism deck 7Connector DISC SENSOR (S) bo

26、ard: CN53 8Flat type wire (16 core) BD board: CN102 6Screw (BVTT3x10) 9Flat type wire (9 core) BD board: CN103 !Connector SW board: CN54 !Connector TABLE SENSOR board: CN51 !Connector MOTOR board: CN61 !CD mechanism base unit 3-4. BASE UNIT AND MAGNET HOLDER Remove in the arrow direc- tion while pre

27、ssing the claw with a screwdriver, etc. 3Screw (BTP2.6x10) 4Magnet holder 1Two screws (BTP2.6x8) Remove in the arrow direc- tion while pressing the claw with a screwdriver, etc. 8Tension coil spring (F-2) 9BU holder assy 0Torsion spring (Holder) !Base unit 6Two screws (PTPWH2.6x8) 5Two screws (PTPWH

28、2.6x8) 7Tension coil spring (F-1) 2Reinforcement assy 18 3-5. CD MECHANISM SECTION NOTE: Adjust the position of the gear as shown in the figure when attaching. 9Slider (Lock) !Slider (Cam) !Slider (Loading) 4Cam cover 3Screw (BTP2.6x8) 1Screw (BTP2.6x8) 2SW board !Torsion spring (Loading) !Disc hold

29、er (A) !Loading lever ASSY !Tension coil spring (Lever) 6Screw (BTP2.6x8) 7Cover (Lever) 5Screw (BTP2.6x8) 8Disc holder (B) 19 SECTION 4 TEST MODE ADJ MODE 1. Press the POWER button to turn ON the power, and open the front cover. 2. Place the CD on the slit, close the front cover, and chuck the the

30、CD. 3. Press the POWER button to turn OFF the power. 4. Short-circuit the test point (TP302:ADJ) and test point (TP303:GND) of the main board with a lead wire. 5. Press the POWER button to turn ON the power. The CD is played back automatically and the ADJ mode is set. Prohibits high speed search dur

31、ing accessing Ignores even if GFS becomes L ADJ Mode Special Function Table (The buttons shown in the () function only when the remote com- mander provided is used.) ButtonFunction (3) (8) CHECK CLEAR Tracking servo, sled servo OFF Tracking servo, sled servo ON Observation mode during S Automatic ec

32、centricity measurement (Not used for servicing) Display of special functions in ADJ mode *1 CD1 ALL DISCS S-JI mode *2 CD1 ALL DISCS Sokuteichu -4 DISCTRACKMINSEC Observation mode during S When this mode is set, the right will be displayed. *1 Automatic eccentricity mea- surement (Not used for ser-

33、vicing) When this mode is set, the right will be displayed. The Sokuteichu count down display will be counted down from 4 to to 1 *2. After counting down, the eccentricity value will be displayed *3. Sokuteichu count down display *3 CD1 ALL DISCS Henshin 026 FLUORESCENT INDICATOR TUBE, LED ALL LIT,

34、AND KEY CHECK MODE 1. Short-circuit the test point (TP302:ADJ) and test point (TP301:AFADJ) of the main board with a lead wire. 2. Insert the power plug into the outlet. The whole fluorescent in- dicator tube lights up. When the SRAM is faulty, “SRAMNG” will be displayed. 3. When the front cover is

35、opened, the POWER button LED goes off. Closing the front cover will light it up again. Pressing the POWER button sets the key check mode. The POWER button LED also lights up. All buttons have individual button numbers. When a button is pressed, the button number is counted up and displayed. Eccentri

36、city value CD1 1 DISC 01 Count up display Buttons and Corresponding Button Numbers CLEAR CHECK REPEAT PROGRAM SEARCH INPUT TIME/TEXT ENTER CONTINUE SHUFFLE POWER X-FADE NO DELAY P p PLUS ONE MEGA CONTROL DISC/CHARACTER 0 1 2 3 4 5 6 7 8 9 14 15 16 17 18 All lit (LED lights up) Partially lit 1 (LED l

37、ights up) Partially lit 2 LED lights up Partially lit 3 (LED lights up) Partially lit 4 Each time JOG is rotated, PROGRAM 123 is displayed on the fluorescent indicator tube, and 1, 2, 3 light up one by one. Clockwise : PROGRAM 1n2n3 Counterclockwise : PROGRAM 3n2n1 ButtonButton Number or Display Dis

38、plays button number 20 Partially lit 1 ABCDEFG CD1 Partially lit 2 Partially lit 3 CD1 2nd Partially lit 4 PROGRAM1 CD1PROGRAM 1 FLUORESCENT INDICATOR TUBE AND LED CHECK MODE This mode is set by pressing the POWER button while pressing the CHECK and PLUS ONE buttons in the power-off (standby) state.

39、 The whole fluorescent indicator tube lights up, and the STANDBY, MEGA CONTROL, PLUS ONE, , and P LEDs light up. This mode can be exited by pressing the POWER button. SHIPMENT MODE (Set to this mode when returning the unit to the user.) This mode is set by pressing the POWER button while pressing th

40、e REPEAT and PLUS ONE buttons in the power-off (standby) state. The power goes off automatically after the SRAM is all-erased and the BD is opened (loading out state). MAIN BOARD CONDUCTOR SIDE IC501IC201 CN702CN704 AGING MODE Mode which repeatedly changes and plays back discs automati- cally in the

41、 unit. It will repeat aging as long as no errors occur. If an error occurs during aging, it will stop all servos, motors, etc. instantaneously, display the error number, and stop operations. However, the stopping conditions differ according to whether the unit is equipped with the “self-protection f

42、unction during errors” described later. The function serves to maintain the state of the unit when errors occur. Sequence of Aging Mode $ $ $ $ $ $ $ $ $ Order of Disc Change (1 cycle takes 3 minutes) $ $ $ 1. No. 51 2. No. 20 3. No. 40 4. No. 30 5. No. 10 6. N0. 40* $ $ $ $ 1. Disc change 2. Load i

43、n 3. TOC read 4. Access of last track 5. 3 second playback 6. Access of first track 7. 3 second playback 8. Load out * DISC No. 40 chucks twice during one cycle. To differentiate, the “ 2nd ” on the block indicator of the fluo- rescent indicator tube will light up during the second chucking. Special

44、 Functions in Aging Mode There are some useful function in the aging mode. Disc setting mode*1 Switching of use/disuse of protection function in errors *2 Aging cycle count function *3 *1 Disc setting mode: 5 discs are set before setting the aging mode. This mode makes the setting of these discs more easy. *2 Switching of use/disuse of protection function in errors: Function which voluntarily corrects errors which occur during normal operations by retries. If this function is not provided, all operations will be stopped without retiring. It is suitable for