Sony-CDP-XE270-CDP-XE370-Service-Manual (1)电路原理图.pdf

SERVICE MANUAL COMPACT DISC PLAYER US Model CDP-XE270/XE370 Canadian Model CDP-XE270 AEP Model UK Model E Model Australian Model CDP-XE270/XE370 SPECIFICATIONS CDP-XE270/XE370 Photo: CDP-XE370 Model Name Using Similar MechanismNEW CD Mechanism TypeCDM66-5BD27 Base Unit NameBU-5BD27 Optical Pick-up NamePXR-104X Compact disc player LaserSemiconductor laser ( = 780 nm) Emission duration: continuous Frequency response2 Hz to 20 kHz 0.5 dB Dynamic rangeMore than 93 dB Harmonic distortion0.0045% Outputs ANALOG OUT DIGITAL OUT (OPTICAL) General Power consumption11 W Dimensions (approx.)430 x 95 x 290 mm (w/h/d)incl. projecting parts Mass (approx.)CDP-XE370: 3.2 kg CDP-XE270: 3.2 kg Supplied accessories Audio cord (2 phono plugs 2 phono plugs) (1) Remote commander (remote) (1) (CDP-XE370 only) R6 (size AA) batteries (2) (CDP-XE370 only) Design and specifications are subject to change without notice. Load impedance Over 10 kilohms Wave length: 660 nm Jack type Phono jacks Optical output connector Maximum output level 2 V (at 50 kilohms) 18 dBm Power requirements Where purchased US, Canadian models AEP, UK models Australian model Singapore model Power requirements 120 V AC, 60 Hz 230 V AC, 50/60 Hz 240 V AC, 50/60 Hz 220 V 230 V AC, 50/60 Hz RadioFans.CN 收音机爱 好者资料库 2 CDP-XE270/XE370 TABLE OF CONTENTS 1.SERVICING NOTES.4 2.GENERAL.5 3.DISASSEMBLY 3-1.Disassembly Flow .6 3-2.Case .6 3-3.CD Mechanism Deck (CDM66-5BD27).7 3-4.MAIN Board .7 3-5.Base Unit (BU-5BD27).8 4.TEST MODE.9 5.ELECTRICAL CHECKS. 11 6.DIAGRAMS 6-1.Note for Printed Wiring Boards and Schematic Diagrams . 13 6-2.Printed Wiring Board BD Board . 14 6-3.Schematic Diagram BD Board . 15 6-4.Printed Wiring Boards LOADING/MAIN/POWER SW Boards . 16 6-5.Schematic Diagram LOADING/MAIN/POWER SW Boards . 17 6-6.Printed Wiring Boards DISPLAY/KEY Boards . 18 6-7.Schematic Diagram DISPLAY/KEY Boards . 19 6-8.IC Pin Function Description . 22 7.EXPLODED VIEWS 7-1.Case Section . 26 7-2.Front Panel Section . 27 7-3.CD Mechanism Deck Section (CDM66-5BD27). 28 7-4.Base Unit Section (BU-5BD27) . 29 8.ELECTRICAL PARTS LIST. 30 Ver 1.1 2001.07 RadioFans.CN 收音机爱 好者资料库 3 CDP-XE270/XE370 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. CAUTION Use of controls or adjustments or performance 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” 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.). 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 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 battery 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 MARQUE 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 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. The following caution label is located inside the unit. This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is located on the rear exterior. 4 CDP-XE270/XE370 SECTION 1 SERVICING NOTES 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. LASER DIODE AND FOCUS SEARCH OPERATION CHECK Carry out the “S curve check” in “CD section adjustment” and check that the S curve waveforms is output three times. MODEL IDENTIFICATION Rear Panel MODELPART No. CDP-XE270: AEP model4-232-151-0 CDP-XE270: UK model4-232-151-1 CDP-XE270: US and Canadian models4-232-151-2 CDP-XE270: Australian model4-232-151-3 CDP-XE270: Singapore model4-232-151-6 CDP-XE370: AEP model4-232-692-0 CDP-XE370: UK model4-232-692-1 CDP-XE370: US model4-232-692-2 CDP-XE370: Australian model4-232-692-3 CDP-XE370: Singapore model4-232-692-6 PART No. 5 CDP-XE270/XE370 SECTION 2 GENERAL This section is extracted from instruction manual. CLEAR qg (12) Disc compartment 6 (8) Display qj (10) PLAY MODE 2 (9, 12, 14) POWER 1 (8) Remote sensor qh (7) (CDP-XE370 only) REPEAT 3 (9, 11) TIME w; (10) BUTTON DESCRIPTIONS A OPEN/CLOSE 7 (8, 10, 12) H 8 (9, 11, 12, 14) X 9 (9, 14) x 0 (9, 14) lAMSL dial qa (9, 12, 14) m/M qk (9, 13) LOCATION OF CONTROLS FRONT PANEL REMOTE CONTROL (CDP-XE370 only) ANALOG OUT LEVEL +/ qk (7, 9) CHECK qg (12) CLEAR qf (12) CONTINUE 2 (9, 14) DISPLAY ON/OFF qs (11) FADER qd (13) Number buttons 4 (9, 12) PROGRAM qa (9) REPEAT 6 (9) SHUFFLE 1 (9) TIME 3 (10) BUTTON DESCRIPTIONS 10 5 (9, 12) N qh (9, 11, 12, 14) X 8 (9, 14) x qj (9, 14) . AMS 9 (9, 12, 14) m/M 0 (9, 13) REAR PANEL ANALOG OUT L/R jacks 2 (7) Mains lead 4 (7) DIGITAL OUT OPTICAL jack 1 (8) 6 CDP-XE270/XE370 This set can be disassembled in the order shown below. 3-1.DISASSEMBLY FLOW SECTION 3 DISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. 3-2.CASE 3-2.CASE (Page 6) 3-3.CD MECHANISM DECK (CDM66-5BD27) (Page 7) 3-5.BASE UNIT (BU-5BD27) (Page 8) 3-4.MAIN BOARD (Page 7) SET 1two screws (case 3 TP2) 1two screws (case 3 TP2) 1screw (case 3 TP2) 2case 7 CDP-XE270/XE370 3-3.CD MECHANISM DECK (CDM66-5BD27) 3-4.MAIN BOARD 1tapering driver 2 3panel, loading 4wire (flat type) (21core) 7connector (CN151) 8CD mechanism deck (CDM66-5BD27) BOTTOM VIEW 5three screws (BVTP3 8) 6 Note:When the power supply does not turn on, rotate the cam with tepering driver (3 mm) as the figure shows, and the loading panel will be moved. 1connector (CN602) 2wire (flat type) (17core) (CN621) 2wire (flat type) (21core) (CN651) 5main board 3four screws (BVTP3 8) 4two screws (BVTP3 8) 8 CDP-XE270/XE370 3-5.BASE UNIT (BU-5BD27) 1screw (DIA. 12), froating 3three screws (DIA. 12), froating 4holder (66) 2 BOTTOM VIEW 5two springs (932), compression 5two springs (932), compression 6base unit (BU-5BD27) 9 CDP-XE270/XE370 SECTION 4 TEST MODE AGING MODE Procedure: 1.While pressing the bothx and CLEAR buttons, turn the power on. 2.Tray open-close aging is performed. 3.Press the TIME button to display time for open-close on the fluorescent indicator tube. 4.To release the mode, press the POWER button to turn OFF the power. CHECK MODE Procedure: 1.Press the POWER button to turn ON the power 2.Press the OPEN/CLOSE button and insert the disc. 3.Press the POWER button to turn OFF the power. 4.While pressing the both PLAY MODE and buttons, turn the power on . 5.CD starts playing, and every time the TIME button is pressed, RFDC and OFFSET are changed over. 6.To release the mode, press the POWER button to turn OFF the power. ADJ MODE Procedure: 1.Press the POWER button to turn ON the power 2.Press the OPEN/CLOSE button and insert the disc. 3.Press the POWER button to turn OFF the power. 4.Short-circuit the test TP (ADJ) of the DISPLAY board and ground with a lead wire. 5.Press the POWER button to turn ON the power and CD plays the second track. 6.To release the mode, press the POWER button to turn OFF the power. 7.Open-circuit the test TP (ADJ) of the DISPLAY board and ground with a lead wire. AFADJ MODE (KEY AND FLUORESCENT INDICA- TOR TUBE DISPLAY CHECK MODE) Procedure: 1.Short-circuit the test TP (AFADJ) of the DISPLAY board and ground with a lead wire. 2.Press the POWER button to turn ON the power. The whole fluorescent indicator tube lights up. 3.All buttons have individual button numbers. When a button is pressed, the button number is counted up and displayed. When remote controller signals are received, “RM *” will be displayed. (* are the numbers corresponding to the remote controller buttons.) (CDP-CE370 only) 4.To release the mode, press the POWER button to turn OFF the power. 5.Open-circuit the test TP (AFADJ) of the DISPLAY board and ground with a lead wire. Buttons and Corresponding Button Numbers ButtonButton Number or Display H (PLAY)Partical lighting 1 X (PAUSE)02 x (STOP)Partical lighting 2 lAMSL (button)04 m05 M06 TIME07 PLAY MODE08 CLEAR09 REPEAT10 A OPEN/CLOSEAll lit lAMSL (knob) When rotated clockwise: The music calendar numerals light up in ascending order. When rotated counterclockwise: The music calendar numerals light up in descending order. Count up displayDisplays button number 10 SECMIN Partial lighting 1 24 6810 1214 161820 Partial lighting 2 A H A 10 CDP-XE270/XE370 Checking Location: DISPLAY BOARD (Conductor Side) TP (ADJ) TP (AFADJ) (GND) 11 CDP-XE270/XE370 Ver 1.1 2001.07 Note: 1. CD Block is basically designed to operate without adjustment. There- fore, check each item in order given. 2. Use PATD-012 disc (4-225-203-01) unless otherwise indicated. 3. Use an oscilloscope with more than 10M impedance. 4. Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks. S Curve Check Connection: Procedure: 1.Connect an oscilloscope to test point TP (FE1) and TP (VC) on the BD board. 2.Turn the power on and insert the disc (PATD-012). 3.Turn the power off and enter the ADJ mode. (Refer to 4. Test Mode) 4.Turn the power on to playback the second track and press the xbutton to stop playing back. 5.Press the REPEAT button. (The object lens moves up and down) 6.Confirm the oscilloscope waveform (S-curve) is symmetrical between A and B. And check peak to peak level within 2 1 Vp-p. S-curve waveform Note: Try to measure several times to make sure than 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. Checking Location: BD board (See page 12) RFDC Level Check Connection: + BD board TP (FE1) TP (VC) oscilloscope A B symmetry within 2 1 Vp-p + BD board TP (RFDC) TP (VC) oscilloscope VOLT/DIV: 200 mV TIME/DIV: 500 ns level: 1.15 0.35 Vp-p VC Procedure: 1.Connect an oscilloscope to test point TP (RFDC) and TP (VC) on the BD board. 2.Turn the power on and insert the disc (PATD-012). 3.Turn the power off and enter the ADJ mode. (Refer to 4. Test Mode) 4.Turn the power on to playback the second track. 5.Confirm that oscilloscope waveform is clear and check RFDC signal level is correct or not. Note: A clear RFDC signal waveform means that the shape “” can be clearly distinguished at the center of the waveform. RFDC signal waveform Checking Location: BD board (See page 12) RFAC Level Check Connection: Procedure: 1.Connect an oscilloscope to test point TP (RFAC) and TP (VC) on the BD board. 2.Turn the power on. 3.Turn the power off and enter the ADJ mode. (Refer to 4. Test Mode) 4.Turn the power on to playback the second track. 5.Confirm that oscilloscope waveform is clear and check RFAC signal level is correct or not. Note: A clear RFAC signal waveform means that the shape “” can be clearly distinguished at the center of the waveform. RFAC signal waveform Checking Location: BD board (See page 12) + BD board TP (RFAC) TP (VC) oscilloscope VOLT/DIV: 200 mV TIME/DIV: 500 ns level: 1.35 0.4 Vp-p SECTION 5 ELECTRICAL CHECKS 12 CDP-XE270/XE370 Ver 1.1 2001.07 E-F Balance Check Connection: Procedure: 1.Connect an oscilloscpe to test point TP (TE1) and TP (VC) on the BD board. 2.Turn the power on. 3.Put the disc (PATD-012) in to playback the number two track. 4.Press the TIME button. (The tracking servo and the sledding servo are turned OFF) 5.Check the level B of the oscilliscopes waveform and the A (DC voltage) of the center of the Traverse waveform. Confirm the following : A/B x 100 = less than 22% Traverse Waveform 6.Press the TIME button. (The tracking servo and sledding servo are turned ON) Confirm the C (DC voltage) is almost equal to the A (DC voltage) is step 5. Traverse Waveform Checking Location: BD board + BD board TP (TE1) TP (VC) oscilloscope 0V B l