Sony-CDPXA50ES-cd-sm维修电路原理图.pdf

MICROFILM CDP-XA50ES AEP Model E Model SERVICE MANUAL COMPACT DISC PLAYER Model Name Using Similar MechanismNEW CD Mechanism Type CDM32BB-12B (BLACK) CDM32BN-12B (GOLD) Base Unit NameBU-12B Optical Pick-up NameKSS-273B/J1N SPECIFICATIONS Photo: Black Continued on next page RadioFans.CN 收音机爱 好者资料库 2 TABLE OF CONTENTS 1.SERVICING NOTES 1-1.How to Open the Disc Tray When Power Switch Turns Off.3 1-2.Preparation for Adjustment and Measurement . 3 2.GENERAL.4 3.DISASSEMBLY. 15 4.TEST MODE 4-1.AF Mode. 20 4-2.ADJ Mode . 21 4-3.CLV-S Mode . 21 5.ELECTRICAL ADJUSTMENTS. 22 6.DIAGRAMS 6-1.Printed Wiring Boards SERVO Section . 25 6-2.Schematic Diagram SERVO Section . 27 6-3.Schematic Diagram AUDIO Section . 32 6-4.Printed Wiring Boards AUDIO Section . 37 6-5.Printed Wiring Boards PANEL Section . 39 6-6.Schematic Diagram PANEL Section . 41 6-7.Printed Wiring Boards POWER SUPPLY Section . 44 6-8.Schematic Diagram POWER SUPPLY Section . 47 6-9.IC Pin Function Description. 54 7.EXPLODED VIEWS. 60 8.ELECTRICAL PARTS LIST. 66 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. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB- LISHED BY SONY. MODEL IDENTIFICATION BACK PANEL 4-986-742- AEP Model: 1 (CED) Singapore Model : 2 (SP) RadioFans.CN 收音机爱 好者资料库 3 SECTION 1 SERVICING NOTES 1-1.HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH TURNS OFF Insert a tapering driver into the aperture of the unit bottom, and turn in the direction of arrow (to OUT direction). 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 difference 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 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. 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. 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. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. SERVO BOARD Conductor side IC91 IC101 +5 V IC261 1 1-2.PREPARATION FOR ADJUSTMENT AND MEASUREMENT Perform connecting the IC261 pin 2 of SERVO board to the line of +5V because this unit does not work without the stabilizer struc- turally. tray tapering driver *To close the disc tray, turn the tapering driver in the reverse direction (to IN di- rection). 2 4 SECTION 2 GENERAL This section is extracted from instruction manual. 5 6 7 8 9 10 11 12 13 14 15 SECTION 3 DISASSEMBLY This set can be disassembled in the order shown below. Note: Follow the disassembly procedure in the numerical order given. LOADING PANEL SECTION LOADING PANEL SECTION (Page 15) CASE (TOP PLATE ), FRONT PANEL SECTION (Page 16) AUDIO BOARD (Page 16) MECHANISM DECK (CDM32BB-12B/CDM32BN-12B) (Page 17) SERVO BOARD (Page 17) PANEL (DRAWER) (Page 18) BASE UNIT (BU-12B) (Page 18) SLED MOTOR (M21), OPTICAL PICK-UP (KSS-273B/J1N) (Page 19) 5connector (CN292) 4loading panel section 3two hexagon hole bolts (LID) (for black/gold) 2two screws (KTP3 8) (for black/gold) 1Open the tray turning the tapering screwdriver to the arrow direction. tray 16 CASE (TOP PLATE), FRONT PANEL SECTION 9three connectors (CN351, 352, 461) 6four screws (3 8) 4screw (3 8) 0front panel section 8two screws (K3 8) 5lag 4four screws (3 8) 3two connectors (CN202, 203) 4two screws (3 8) 2case (top plate) 1three flat head screws 1three flat head screws 3four connectors (CN103, 104, 105, 202) 3two connectors (CN922, 923) AUDIO BOARD 3two connectors (CN401, 501) 3four connectors (CN402, 502, 610, 611) 7audio board 3two connectors (CN608, 609) 2side plate (R) 3two connectors (CN201, 993) 7two brakets (case) 6eight screws (BV3 8 B) 5lag 4TR screw 1four flat head screws 17 MECHANISM DECK (CDM32BB-12B/CDM32BN-12B) 2two screws 2two screws 3clamp 1connector (CN952) 1two connectors (CN103, 104) 1two screws (BVTP3 6) SERVO BOARD 1two screws (BVTP3 6) 2bracket (servo) 5six screws (BVTP3 6) 6servo board bracket (servo) 1connector (CN105) 4wire (flat type) (12 core) (CN101) 3wire (flat type) (26 core) (CN102) 4mechanism deck (CDM32BB-12B) (CDM32BN-12B) 3clamp 18 PANEL (DRAWER) 1two tapping screws 2two ditch BASE UNIT (BU-12B) 4two screws (PTPWH2.6 8) 6base unit 7flexible board (CN291) 7two coil springs (F) 7two coil springs (F) 1flexible board (CN192) 5two holders (SP) 4two screws (PTPWH2.6 8) 3Remove the panel (drawer) to direction of the arrow. 5two holders (SP) 2screw (B2.6 10) 3lag 19 SLED MOTOR (M21), OPTICAL PICK-UP (KSS-273B/J1N) 7poly-slider washer 8gear (D) 4tapping screw 5lag 6leaf spring (OP) A 2two screws (BTP2.6 8) 3leaf spring (skew) 9Remove the sled motor (M21) and optical pick-up (KSS-273B/J1N) to direction of the arrow A. 1flexible board (CN11) 4tapping screw 0bracket (OP base) 20 SECTION 4 TEST MODE 4-1.AF MODE Connect the TP2 (AFJ) on the SERVO board to the ground and turn on the power supply. The AF mode is then activated and the following check can be made. 4-1-1.Fluorescent Indicator Tube Check After confirming display of all on, keep pressing the following button, and the following display is attained. p (STOP) button (Display: 01) ” (PLAY) button (Display: 02) P (PAUSE) button (Display: 03) ) button 0 button SHUFFLEREPEATA- AUTO SPACEEDIT STEP PROGRAM INDEX 1 B ( JUST ) PEAK 135 79 111315 (Display: 04) (Display: 05) (Display: 06) 24 6810 1214” (Display: 07) P MODE button SIDE-ACUSTOM INDEX FADE SEC DELETE C. (Display: 08) REPEAT button TIME button (Display: 10) C. FILE INDEX SIDE-B MIN (1) (Display: 09) Keep pressing the OPEN/CLOSE button, and all on display is attained again. 4-1-2.Key Check All buttons are assigned with numbers respectively, and when each button is pressed, it is counted and its number is displayed. Up to “16” can be counted. A button pressed once is not further counted but the number is displayed. Table 4-1. ButtonDisplayButtonDisplay ERASE 00P03 EDIT/ 12)04 TIME FADE FILE13005 FILTER20CHECK06 PUSH ENTER23CLEAR07 all light P MODE08 OPEN/CLOSEup p01REPEAT09 (02TIME10 4-1-3.Remote Commander Check Press the ( button on remote commander, and “ ” ( on the set turn on. Nothing will be displayed if pressing another button. ( ( count displaybutton number display CHECK button CLEAR button ( TIME ) 21 4-2.ADJ MODE Connect the TP1 (ADJ) on the SERVO board to the TP (GND) and turn on the power supply. The ADJ mode is then activated and the following operation is executed. There is no problem even if GFS is low value continuously dur- ing playing. Do not perform high speed search during an access. The gain of focus servo and spindle servo does not lower during playing. Manual operation and measurement of the servo system are pos- sible. (For detailed operating method, see Table 4-2. in ADJ Mode.) 4-2-1.Button Operation Table in ADJ Mode After all music numbers are displayed, press the TIME button, and the jitter display mode is then set. The button functions are as listed below. Button Functions (Operate with remote commander.) Table 4-2. * For button numbers 3, 8, 11, and 12, use them only when an oscilloscope is connected. Button No.Test Mode 3Tracking servo off 8Tracking servo on 11S-curve measuring mode 12All servo off 13Top turnback display 14Botton turnback display 15Center display 16Optimum point display 17Optimum jitter display 18TE traverse display 19VC, FE and RF display 20 Autogain display (Focus, tracking and sled) 4-3.CLV-S MODE The spindle servo can be operated for play in the CLV-S mode by connecting TP (ADJ) and TP (GND) after turning on the power supply. SERVO BOARD Conductor side TP (GND) IC101 TP 1 (ADJ) TP 2 (AFJ)CN101CN102 22 Notes: 1.CD block basically constructed to operate without adjustment. Therefore, check each 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 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. Procedure: 1.Connect the oscilloscope to TP (FE) and TP (VC) on SERVO board. 2.Connect the TP (FEI: IC101 pin ) and TP (VC) with lead wire. 3.Turned power switch on. 4.Put 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.) 5.Confirm that the oscilloscope waveform (S-curve) is symmetri- cal between A and B. And confirm peak to peak level within 3.0 1.0 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 Connection: Procedure: 1.Connect the oscilloscope to TP (RF) and TP (VC) on SERVO board. 2.Turned power switch on. (stop mode) 3.Put disc (YEDS-18) in and press the ( button. 4.Confirm that the oscilloscope waveform is clear and check RF signal level is correct or not. Note: Clear RF signal waveform means that the shape “” can be clearly distinguished at the center of the waveform. RF signal waveform SECTION 5 ELECTRICAL ADJUSTMENTS VOLT/DIV: 200 mV TIME/DIV: 500 ns (with the 10: 1 probe in use) level: 1.2Vp-p +0.25 0.20 A B symmetry within 3.0 1.0 Vp-p S-Curve Check Connection: + SERVO board TP (FE) TP (VC) oscilloscope + SERVO board TP (RF) TP (VC) oscilloscope (AC range) When observing the eye pattern, set the oscilloscope for AC range and raise vertical sensitivity. E-F Balance (Traverse) Check Connection: Procedure: 1.Connect the TP1 (ADJ) to ground and TP (TEI: IC101 pin ) to TP (VC) with lead wire. 2.Connect the oscilloscope to TP (TE) and TP (VC) on SERVO board. 3.Turned power switch on. 4.Put disc (YEDS-18) in and press the ( button. 5.Confirm that the oscilloscope waveform is symmetrical on the top and bottom in relation to 0 Vdc, and check this level. 6.After check, remove the lead wire connected in step 1. RF PLL Free-run Frequency Check Connection: Traverse waveform A B + SERVO board TP (TE) TP (VC) oscilloscope (DC range) level: 200 100 mVp-p + TP (PLK) SERVO board frequency counter Procedure: 1.Connect the frquency counter to TP (PLK). 2.Turned power switch on. 3.Put disc (YEDS-18) in and press the ( button. 4.Confirm that the reading on frequency counter is 4.3218 MHz. 23 24 Skew Adjustment Note : Do not perform the skew adjustment when not using at- tached stabilizer to a set. + SERVO board TP (RF) TP (VC) oscilloscope (AC range) VOLT/DIV: 200 mV TIME/DIV: 500 ns (with the 10: 1 probe in use) level: 1.2Vp-p +0.25 0.20 RF signal waveform SERVO BOARD Conductor side TP (TEI) IC101 SECTION 6 DIAGRAMS Circuit Boards Location TP (RF) TP (FE) TP (RFI) TP (TE) TP (VC) TP1 (ADJ) TP2 (AFJ) TP (PLK) 29 (FEI) CN101CN102 1.Remove the bottom plate, put one third of the unit out from the desk. 2.Connect the osiclloscope to TP (RF) and TP (VC) on SERVO board. 3.Turned power switch on. 4.Put disc (YEDS-18) in and press the ( button. 5.Adjust to be clear the waveform of the oscilloscope turning the adjsutment screw with a screwdriver. Note: Clear RF signal waveform means that the shap “”can be clearly distinguished at the center of the waveform. 6.After the adjustment, lock the adjustment screw. LOADING MOTOR board SERVO board POWER board COAX board OPT board LINE board AUDIO board FLEX RELAY board KEY-L board FL RELAY board LOADING SW board DISPLAY board KEY-R board VR board SW board BSL board FUSE board screwdriver adjustment screw 49 50 262728293031323334353637383940 41424344 45 62 63 64 65 66 67 68 69 70 71 72 73 74 75 7677787980818292 91908988878685 84 8393949596979899100 SLED PWM GENERATOR TRACKING PWM GENERATOR FOCUS PWM GENERATOR PWM GENERATORSERVO DSP FOCUS SERVO TRACKING SERVO SLED SERVO CLV PROCESSOR CPU INTERFACE NOISE SHAPER 18-TIMES OVER SAMPLING FILTER CPU INTERFACE CPU INTERFACE ADDRESS GENERATOR CPU INTERFACE PRIORITY ENCODER CPU INTERFACE ERROR CORRECTOR CPU INTERFACE TIMING GENERATOR 2 MIRR DFCT FOK DETECTOR 32K RAM RESISTER D/A DIGITAL PROCESSOR TIMING GENERATOR 1 SYNC PROTECTOR DIGITAL OUT SUBCODE P-W PROCESSOR SUBCODE Q PROCESSOR DIGITAL PLL VARI-PITCH DOUBLE SPEED CPU INTERFACE EFM DEMODULATOR SERIAL PARALLEL PROCESSOR CPU INTERFACE ASYMMETRY CORRECTION 1 2 3 4 5 6 7 8 9 10 11 20 19 18 17 16 15 14 13 12 21 22 23 24 25 46 50 61 | 51 PEAK DETECTOR CLOCK GENERATOR MUX A/D CONVERTER SWITCH & BUFFER SERVO AUTO SEQUENCER SERVO MICRO PROGRAM INTERFACE RFC ADIO AVSS IGEN AVDD VCKI VPCO PDO TES3 TES2 DVSS TEST VCO1 VCO0 SRON SRDR SFON TFDR TRON TRDR TFON FFDR FRON FRDR FFON RFDC TE SE FE VC FILO FILI PCO CLTV AVSS RFAC BIAS ASYI ASYO AVDD ADD ASYE PSSL WDCK LRCK XTAI XTAO XTSL DVSS FSTI FSTO D OUT MD2 C16M C4M SCOR WFCK EMPH SBSO EXCK SQSO SQCK MUTE SENS XRST DIRC SCLK DFSW ATSK DATA XLAT CLOK COUT ADD MIRR DFCT FOK FSW