Sony-CDPEX77-cd-sm 电路图 维修手册.pdf

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1、MICROFILM CDP-EX77 COMPACT DISC PLAYER SERVICE MANUALAEP Model UK Model E Model CDP-EX77 is the CD player section in MHC-EX66, DHC-EX77MD/MD77 Model Name Using Similar MechanismHCD-MD5 CD Mechanism TypeCDM38A-5BD19 Base Unit NameBU-5BD19 Optical Pick-up NameKSS-213B/K-N SPECIFICATIONS SystemCompact

2、disc and digital audio system LaserSemiconductor laser ( = 780 nm) Emission duration: continuous Laser outputMax. 44.6 W* * This output is the value measured at a distance of 200 mm from the objective lens surface on the Op- tical Pick-up Block with 7 mm aperture. Frequency response2 Hz to 20 kHz (

3、0.5 dB) CD OPTICAL DIGITAL OUT (Square optical connector jack, rear panel) Dimensions (w/h/d) incl. projecting parts and controls:Approx. 280 122.5 347 mm MassApprox. 3.7 kg Design and specifications are subject to change without notice. RadioFans.CN 收音机爱 好者资料库 2 TABLE OF CONTENTS 1.SERVICING NOTES

4、1-1.Power Supply During Servicing . 3 1-2.Fluorescent Indicator Tube/Key Check Mode . 3 2.GENERAL.4 3.DISASSEMBLY. 9 4.ELECTRICAL ADJUSTMENTS. 14 5.DIAGRAMS. 16 5-1.Printed Wiring Board BD Section . 17 5-2.Schematic Diagram BD Section . 19 5-3.Schematic Diagram MAIN/PANEL/MOTOR Section . 23 5-4.Prin

5、ted Wiring Boards MAIN/PANEL/MOTOR Section . 27 5-5.IC Pin Function Description. 34 6.EXPLODED VIEWS. 36 7.ELECTRICAL PARTS LIST. 41 NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electro- static break-down because of the potential di

6、fference 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

7、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

8、. This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is located on the rear exterior. Laser component in this product is capable of emitting radiation exceeding the limit for Class 1. The following caution label is located inside the unit. LASER DIODE AND FOCU

9、S SEARCH OPERATION CHECK Carry out the “S curve check” in “CD section adjustment” and check that the S curve waveforms is output three times. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. Notes on chi

10、p 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 con

11、ductor of the circuit board (within 3 times). Be careful not to apply force on the conductor when soldering or unsoldering. SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REP

12、LACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. RadioFans.CN 收音机爱 好者资料库 3 SECTION 1 SERVICING NOTES 1-1.Power Supply During Servicing This unit is not able to operate on its own because it does not have its own power supply

13、. During servicing, connect to other units. Power is supplied when the SYSTEM POWER button of the amplifier (TA-EX66/EX77) is turned ON. If the other units are not available, use a service box (PFJ-1) and jig (J-2501-078-A). In this case, press the STOP button and TIME button simultaneously to turn

14、on the power. Connection Diagram FH-E939, 838, 937 CDP/TC POWER SW SERVICE BOX (PFJ-1) JIG (J-2501-078-A) CN904 17P CN902 7P CORD WITH CONNECTOR 17 P (Provided with PFJ-1) CORD WITH CONNECTOR 7 P (Provided with unit) CN101 7P SYSTEM CONTROL UNIT (CDP-EX77) 1-2.Fluorescent Indicator Tube/Key Check Mo

15、de After turning on the power, press the STOP button, TIME button, and DISC 1 button simultaneously to perform the Fluorescent indi- cator tube check. The steps of the Fluorescent Indicator Tube check mode will proceed onto the next one by the above multiple pressing. During the Fluorescent Indicato

16、r Tube check mode, press any button or rotate the selector knob to set the key check mode. To end the mode, press the above three buttons simultaneously. Note 1)When the three buttons pressed to enter the Fluorescent Indicator Tube all lit mode are released together, the Fluorescent Indica- tor Tube

17、 all lit mode will remain on. When released separately, the key check mode will be set soon after the Fluorescent Indicator Tube all lit mode. In “multiple pressing”, if the three buttons are pressed and released together, the next mode will be set. If not, the key check mode will be set. Note 2)In

18、the key check mode, each time the button is pressed, the “KEY=” number on the Fluorescent indicator tube increases. When the SELECTOR knob is rotated, the “KEY=” number on the Fluorescent indicator tube increases in the + direction and de- creases in the direction. Fluorescent Indicator Tube all lit

19、 mode Multiple pressing Segment pattern 1 mode Multiple pressing Segment pattern 2 mode Multiple pressing End of test mode Key check mode Press any key or roted the SELECTOR knob Multiple pressing RadioFans.CN 收音机爱 好者资料库 4 SECTION 2 GENERAL This section is extracted from instruction manual. 5 6 7 8

20、9 SECTION 3 DISASSEMBLY This set can be disassembled in the order shown below. CASE, CHASSIS (Page 9) LOADING PANEL (Page 10) FRONT PANEL SECTION (Page 10) MAIN BOARD, CD MECHANISM DECK (Page 11) BASE UNIT (Page 11) BD BOARD (Page 13) OPTICAL PICK-UP, SLED MOTOR (Page 13) TRAY SECTION (Page 12) CASE

21、, CHASSIS Note: Follow the disassembly procedure in the numerical order given. 1screw (BVTT3 8) 2two screws (case 3 TP2) 2two screws (case 3 TP2) 3case 4two screws (BV3 10) 5two legs (F) 7claw 6four screws (BV3 10) 6screw (BV3 10) 7claw6screw (BV3 10) 8chassis 7claw 10 LOADING PANEL 3loading panel 2

22、Pull the tray (slide). 1Rotate the BU cam assy to direction of the arrow A. BU cam assy A FRONT PANEL SECTION 1flat wire (29 core) (CN305) 2two screws (BV3 10) 3two bosses 4claw 4claw 5front panel section 11 MAIN BOARD, CD MECHANISM DECK 2boss 1two yoke brackets 3base unit 1Six screws (BV3 10) 2back

23、 panel 3connector (CN303) 5two screws (BV3 8) 6main board 4connector (CN304) 7flat wire (19 CORE) (CN302) 8screws (BV3 8) 9relay board 0flat wire (8 core) (CN702) !screw (BV3 10) !CD mechanism deck !bracket (L) !bracket (R) !screw (BV3 10) BASE UNIT 12 TRAY SECTION Note: When installing the tray, ta

24、ke care so that the collars A and B are properly inserted into the slots. collar A collar B slots 1Turn the cam to direction of the arrow. Note: When installing the tray, pull around the flat wire to pass through the claw A and claw B, as shown in the figure. flat wire 3flat wire (CN705) claw B claw

25、 A 2Pull the tray. 5Removal the tray. 4two claws 13 BD BOARD OPTICAL PICK-UP, SLED MOTOR 4flat wire (CN101) 5screw (BVTP 2.6 8) 6Removal the four solders.7BD board 1two screws (PTPWH M2.6 6) 1two screws (PTPWH M2.6 6) 2optical pick-up section 3two springs limit switch 3two springs 1claw 2sled shaft

26、3optical pick-up 4two screws (P 2 3) 5sled motor 14 SECTION 4 ELECTRICAL ADJUSTMENTS + BD board TP (TEO) TP (VC) oscilloscope (DC range) + BD board TP (RF) TP (VC) oscilloscope 5.Confirm that the oscilloscope waveform (S-curve) is symmetri- cal between A and B. And confirm peak to peak level within

27、2.4 0.7 Vp-p. S-curve waveform 6.After check, remove the lead wire connected in step 2. Note: Try to measure several times to make sure that the ratio of A : B or B : A is more than 10 : 7. Take sweep time as long as possible and light up the brightness to obtain best waveform. RF Level Check Connec

28、tion: Procedure: 1.Connect the oscilloscope to TP (RF) and TP (VC) on BD board. 2.Turned power switch on. (stop mode) 3.Put disc (YEDS-18) in and press the button. 4.Confirm that oscilloscope waveform is clear and check RF sig- nal level is correct or not. Note: Clear RF signal waveform means that t

29、he shape “” can be clearly distinguished at the center of the waveform. RF signal waveform E-F Balance (Traverse) Check Connection: Procedure: 1.Connect the TP501 (ADJ) and Ground with lead wire. (on the display board) 2.Connect the oscilloscope to TP (TEO) and TP (VC) on BD board. 3.Turned power sw

30、itch on. 4.Put disc (YEDS-18) in and press the button. 5.Press the TIME button. (Tracking servo and sled servo are turned off.) 6.Confirm that the oscilloscope waveform is symmetrical on the top and bottom in relation to 0 Vdc, and check this level. A B symmetry within 2.4 0.7 Vp-p VOLT/DIV: 200 mV

31、TIME/DIV: 500 ns (with the 10 : 1 probe in use) level: 1.3 0.3 Vp-p Notes: 1.CD Block basically constructed to operated without adjust- ment. Therefore, check eaech item in order given. 2.Use YEDS-18 disc (Part No.: 3-702-101-01) unless otherwise indicated. 3.Use the oscilloscope with more than 10 M

32、 impedance. 4.Clean an object lens by an applicator with neutral detergent when the signal level is low than specified value with the fol- lowing checks. 5.Adjust the focus bias adjustment when optical pick-up is re- placed. Focus Bias Adjustment This adjustment is to be done when the optical pick-u

33、p is replaced. Condition: This adjustment is performed with the set placed hori- zontally. Connection: + BD board TP (FEO) TP (VC) oscilloscope Procedure: 1.Connect the oscilloscope to TP (FEO) and TP (VC) on BD board. 2.Connect the TP (FOK) and TP (GND) with lead wire. 3.Turned power switch on. 4.P

34、ut disc (YEDS-18) in and turned power switch on again and actuate the focus search. (actuate the focus search when disc table is moving in and out.) VOLT/DIV: 200 mV TIME/DIV: 500 ns (with the 10 : 1 probe in use) 1.3 0.3 Vp-p Adjustment Procedure: 1.Connect the oscilloscope to TP (RF) and TP (VC) o

35、n BD board. 2.Turned power switch on. (stop mode) 3.Put disc (YEDS-18) in and press the button. 4.Adjust RV101 so that the oscilloscope waveform is as shown in the figure below (eye pattern). A good eye pattern means that the diamond shape () in the center of the waveform can be clearly distinguishe

36、d. 5.After adjustment, check the RF signal level. RF signal reference waveform (eye pattern) When observing the eye pattern, set the oscilloscope for AC range and raise vertical sensitivity. S-Curve Check Connection: + BD board TP (RF) TP (VC) oscilloscope (AC range) 15 16 A B Traverse waveform leve

37、l: 300 100 mVp-p 7.After check, remove the lead wire connected in step 1. Focus/Tracking Gain Adjustment (RV102, RV103) This gain has a margin, so even if it is slightly off. There is no problem. Therefore, do not perform, this adjustment. Please note that it should be fixed to mechanical center pos

38、ition when you moved and do not know original position. Adjustment Location : BD BOARD Side B specified value: 2 (A+B) A-B 100 = less than 7% A+B = 300 100 mVp-p DISPLAY BOARD Conductor Side RF TEI FEO FOK IC102 PCK FEI RV101 RV103 TEO VC RV102 IC101 GND IC104 IC501 TP501 (ADJ) SECTION 5 DIAGRAMS Ci

39、rcuit Boards Location PANEL board DISPLAY board RELAY board MAIN board LOADING board BD board TABLE board SENSOR board 22 Waveforms BD Section 1 IC101 # (RFO) (PLAY Mode) 500 mV/DIV, 500 ns/DIV6 IC103 (XPCK) MAIN/PANEL/MOTOR Section 1 IC501 ! (X2) 3 Vp-p 10 MHz 5.3 Vp-p 14 ns 2 IC101 $ (TEI) (PLAY M

40、ode) 50 mV/DIV, 1 s/DIV7 IC103 (BCLK) 5 Vp-p 474 ns 3 IC101 2 (FEI) (PLAY Mode) 50 mV/DIV, 1 s/DIV8 IC103 (LRCK) 5.1 Vp-p 22.8 s 4 IC103 3 (MDP) (PLAY Mode)9 IC104 6 (XTO) 4.6 Vp-p 16.9344 MHz 5 IC103 (RFCK) Approx. 150 mVp-p Approx. 100 mVp-p 2.6 Vp-p 7.6 s 5.1 Vp-p 136 s 1.3 0.3 Vp-p 31 IC Block D

41、iagrams BD Section IC101CXA1782BQ 36 PHD2 PHD1 PHD 33 LD 32 RF M 31 RF O 30 RF I 29 CP 28 CB 27 CC1 26 CC2 25 FOK 24 SENS 23 C. OUT 22 XRST 21 DATA 20 XLT 19 CLK 18 VCC 17 ISET 16 SL 0 15 SL M 14 SL P 13 12 TA O TA M 11 FSET 10 TG2 9 TGU 8 SRCH 7 FE M 6 FE O 5 FLB 4 FGD 3 FDFCT 2 FEI 1 FEO 48VC 47TD

42、FCT 46TZC 45ATSC 44TEI 43LPFI 42TEO 41VEE 40EI 39E 38F 37FE BIAS + + + + + + + + + + + + + + + + + + + + + + + + + + + APC LEVELS FOK MIRR DFCT RF IV AMP2 RF IV AMP1 FE AMP F IV AMP E IV AMP TE AMP FZC COMP BAL1 BAL2 BAL3 TOG1 TOG2 TOG3 TTL IIL IIL TTL TTL IIL IIL DATA RESISTOR INPUT SHIFT RESISTOR

43、ADDRESS DECODER OUTPUT DECODER HPF COMPLPF COMP TZC COMP DFCT DFCT TM1 FS4 ATSC WINDOW COMP FCS PHASE COMPENSATION TRACKING PHASE COMPENSATION ISET FS1 FS2 TM4 TM5 TM6 TM3 TM7 TG2 F SET TG1 TM2 + TOG1-3FS1-4TG1-2TM1-7PS1-4 BAL1-3 3534 32 IC102BA6397FP 1 2 3 4 7 8 9 10 11 12 13 14 28 27 26 24 22 21 2

44、0 19 18 17 DRIVE BUFFER DRIVE BUFFER LEVEL SHIFT LEVEL SHIFT THERMAL SHUT DOWN REGULATOR DRIVER MUTE LEVEL SHIFT DRIVE BUFFER DRIVE BUFFER DRIVE BUFFER DRIVE BUFFER LEVEL SHIFT DRIVE BUFFER DRIVE BUFFER 15 16 23 25 5 6 OUT1A OUT1B IN1A IN1B TR-B REG 0 XRST GND IN2A IN2B OUT2A OUT2B GND OP-OUT GND OU

45、T4A OUT4B IN4A IN4B VC VCC VCCVCC VCC IN3B IN3A OUT3B OUT3A OP+ OP IC103CXD2507AQ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32313029282726252423222120 52535455565758596061626364 19 FOK MON MDP MDS LOCK TEST FILO FILI PCO VSS AVSS CLTV AVDD

46、RF BIAS ASYI ASYO ASYE WDCK DATA XRST SENS MUTE SQCK SQSO EXCK SBSO SCOR VSS WFCK EMPH DOUT C4M FSTT XTSL XTAO XTAI MNTO SERVO AUTO SEQUENCER CPU INTERFACE DIGITAL CLV SUB CODE PROCESSOR EFM DEMODULATOR DIGITAL PLL ASYMMETRY CORRECTOR D/A INTERFACE ERROR CORRECTOR 16K RAM DIGITAL OUT CLOCK GENERATOR

47、 LRCK PCMD BCLK GTOP XUGF XPCK VDD GFS RFCK CZPO XROF MNT3 MNT1 XLON SPOD SPOC SPOB SPOA CLKO VDD XLTO DATO CNIN SEIN CLOK XLAT 3 5 14 4 5 3 6 33 IC104PCM1710U-B 1 2 3 4 5 6 7 8 9 10 11 12 13 14 27 26 25 24 23 22 21 20 19 18 17 16 15 28 INPUT INTERFACEDIGITAL FILTER NOISE SHAPER 5-LEVEL DAC RIGHT LOW-PASS FILTER RIGHT 3-STAGE AMP RIGHT LOW-PASS FILTER LEFT 3-STAGE AMP LEFT 5-LEVEL DAC LEFT MODE CONTROL TIMING CONTROL LRCIN DIN BCKIN CLKO XTI XTO DGND VDD VCC2R GND2R EXT1R EXT2R VOUTR GND1 ML/DSD MC/DM2