sony_MZ-E300_service_manual 维修电路图.pdf

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1、Ver 1.2 2001.12 MZ-E300 SERVICE MANUAL PORTABLE MINIDISC PLAYER SPECIFICATIONS US Model Canadian Model AEP Model E Model Chinese Model Model Name Using Similar MechanismNEW MD Mechanism TypeMT-MZE300-176 Optical Pick-up Mechanism TypeLCX-4E US and foreign patents licensed from Dolby Laboratories Lic

2、ensing Corporation System Audio playing system MiniDisc digital audio system Laser diode properties Material: GaAlAs Wavelength: = 790 nm Emission duration: continuous Laser output: less than 44.6 W* * This output is the value measured at a distance of 200 mm from the objective lens surface on the o

3、ptical pick-up block with 7 mm aperture. Revolutions Approx. 700 rpm to 1,500 rpm Error correction ACIRC (Advanced Cross Interleave Reed Solomon Code) Sampling frequency 44.1 kHz Coding ATRAC (Adaptive TRansform Acoustic Coding) Modulation system EFM (Eight to Fourteen Modulation) Number of channels

4、 2 stereo channels 1 monaural channel Frequency response 20 to 20,000 Hz 3 dB Wow and Flutter Below measurable limits Power requirements One LR6 (size AA) battery (not supplied) Battery operation time Battery life(EIAJ1) BatteryPlayback LR6 (SG) Sony Alkaline dry battery 2)Approx. 33 hours 1) Measur

5、ed in accordance with the EIAJ (Electronic Industries Association of Japan) standard (using a Sony MDW-series Mini-disc). 2) When using a Sony LR6 (SG) “STAMINA” alkaline dry battery (produced in Japan). Note The effective battery life may be shorter than that indicated above, depending on operating

6、 conditions, the surrounding temperature, and the battery type. Dimensions Approx. 83.0 x 26.7 x 76.5 mm (w/h/d) (3 3/8 x 1 1/16 x 3 1/8 in.) (not including projecting parts and controls) Mass Approx. 83.0 g (3.0 oz) (the player only) Supplied accessories Headphones/earphones (1) Design and specific

7、ations are subject to change without notice. 9-873-064-13 2001L0200-1 2001.12 Sony Corporation Personal Audio Company Published by Sony Engineering Corporation 收音机爱好者资料库 Ra d i o Fa n s .CN 2 MZ-E300 Specifications . 1 1.SERVICING NOTE. 2 2.GENERAL Preparing a Power Source . 3 To Connect the Headpho

8、nes/Earphones . 3 Playing an MD . 3 3.DISASSEMBLY 3-1. “Lid ASSY, Upper”, Holder ASSY . 4 3-2. Mechanism Deck . 4 3-3. Main Board . 5 3-4. Optical Pick-up ASSY . 5 4.TEST MODE. 6 5.DIAGRAMS 5-1. Explanation of IC Terminals. 13 5-2. Block Diagram. 18 5-3. Printed Wiring Boards Main Section (1/2) . 19

9、 5-4. Printed Wiring Boards Main Section (2/2) . 20 5-5. Schematic Diagram Main Section (1/3) . 21 5-6. Schematic Diagram Main Section (2/3) . 22 5-7. Schematic Diagram Main Section (3/3) . 23 6.EXPLODED VIEWS 6-1. Main Section. 29 6-2. Mechanism Deck Section . 30 7.ELECTRICAL PARTS LIST. 31 SAFETY-

10、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 PUBLISHED BY SONY. Flexib

11、le Circuit Board Repairing Keep the temperature of the soldering iron around 270C during 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. Notes on chip component repla

12、cement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be dam- aged by heat. TABLE OF CONTENTS SECTION 1 SERVICING NOTE When repairing this device with the power on, if you remove the main board, this device stops working. In this case, you work with

13、out the device stopping by fastening the hook of the Open/Close detection switch (S808). CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. Open/Close detection switch (S808) Note on IC replacement If usin

14、g flux on replacing IC801 etc., clean it with alcohol or equivalent, and after that, check carefully there are no dust or rags in between pins. ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFIS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUE

15、S 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. Especially, be sure to check between pins 4 and 5. 收音机爱好者资料库 Ra d i o Fa n s .CN 3 MZ-E300 SECTION 2 GENERALThis section is extract

16、ed from instruction manual. 收音机爱好者资料库 Ra d i o Fa n s .CN 4 MZ-E300 SECTION 3 DISASSEMBLY Note : Follow the disassembly procedure in the numerical order given. 3-1. “LID ASSY, UPPER”, HOLDER ASSY 3-2. MECHANISM DECK The equipment can be removed using the following procedure. 1 Screws (1.4),MI Case A

17、SSY 3 Lid ASSY , Upper 5 Holder ASSY Holder ASSY Reinforcement Spring (POP/L) 4 Move it away from projection 4 Move it away from projection 2 Move it away from projection 7 Screws, tapping (1.7) Case ASSY Mechanism deck Reinforcement 3 Claw 2 4 8 1 Screw (MD), step 5 Motor flexible board 6 OP flexib

18、le board Optical pick-up ASSY Set “Lid ASSY, Upper”, Holder ASSY Mechanism deck Main board Note :Holder ASSY installation 1. Attach the holes on Holder ASSY to the projections on right and left sides. 2. Attach Spring (POP/L) as shown in the figure. 5 MZ-E300 3-3. MAIN BOARD 3-4. OPTICAL PICK-UP ASS

19、Y 1 Screws, tapping (1.7) 2 Claw 3 Main board Knob (HOLD) 3 Screw (MI 1.4) 4 Spring, thrust detent 1 Washer 2 Gear (SA) 5 Optical pick-up ASSY (LCX-4E) Note :On installation of main board, adjust the position of both switch (S809) and knob (HOLD). 6 MZ-E300 3In the normal mode, operate the keys on t

20、he set and those on the remote control as specified below: Turn on HOLD switch on the set. Holding down x (STOP) key on the set, press the keys on the remote control in the following sequence: N t N t . t . t N t . t N t . t X t X R_VDD R_DATA R_KEY R_GND TP804TP803 TP802 TP801 TP806TP805TP951 MAIN

21、BOARD (SIDE A) JACK: 1-793-288-61 4 3 2 1 1234 4-1. GENERAL When entered in the TEST MODE, this set provides the Overall Adjustment mode which allows CD and MO discs to be auto- matically adjusted. In the Overall Adjustment mode, performs adjustments in sequence automatically, and displays the fault

22、y location if any fault is found. In the Manual mode, selected ad- justments can be performed automatically. Operations in the Overall Adjustment mode can be performed either via the main unit, or the keys of a remote control unit. Note that this device does not include a remote control unit. Theref

23、ore, since no connection terminals for a remote control are provided either, a connection device must be used in order to allow a suitable remote control unit to be connected. Connection Following parts are required Remote commander: RM-MZ2N (1-418-493-71) After RM-MZE1 applicable to 2.4V (Not appli

24、cable to remote commanders before RM-MZE1). Jack: 7 poles jack for phones/remote commander (1-793-288-61) SECTION 4 TEST MODE Lead wires: 4 leads 4-2. SETTING THE TEST MODE 4-2-1. How to set the TEST MODE To set the TEST MODE, three methods are available. 1Solder bridge and short BP801 (TEST) on the

25、 main board. Then turn on the power. C810 C8 R907 R803 R82 R830 C806 C805 X801 C80 FB801 15 20 21 IC501 TP809 BP801 (TEST) TP808 TP816 OPEN : Normal mode SHORT : Test mode BP801 MAIN BOARD (SIDE A) TP804 TP804 TP805 TP803 TP802 TP801 TP806TP805TP951 MAIN BOARD (SIDE A) 2Using a pair of tweezers or s

26、imilar tool short-circuit TP804 and TP805 on the main board and turn on the power. 7 MZ-E300 888:88 130 uF 1SHUFF AVLS BASS All on All off Microprocessor version display 888 u 008 V1.300 F 1SHUFF PGM SOUND 1 2 BASS 1 2 All on All off Microprocessor version display The remote control display varies w

27、ith the type of remote control unit used. (Example shown: RM-MC10L) 4-2-2. Operations when the TEST MODE is set When the TEST MODE is entered, the system switches to the dis- play check mode within the TEST MODE. From this mode, the other Test modes can be accessed. When the TEST MODE is set, the LC

28、D repeats a cycle of the fol- lowing displays: Main unit LCD 4-4. MANUAL MODE 4-4-1. Outline of the function The Manual mode is designed to perform adjustments and operational checks on the sets operation according to each individual function. Usually, no adjustments are made in this mode. However,

29、the Manual mode is used to clear the memory before performing automatic adjustments in the Overall Adjustment mode. * Manual mode operation can only be performed via the remote control unit. Use the connection tool to connect the remote control unit. The display of the main unit shows “Adj”. 4-4-2.

30、How to set the Manual mode 1. Set the TEST MODE and press + key to set the Manual mode. Remote control LCD display 000 AAAS CC Test Mode (Display Check Mode) Manual Mode (Remote control only) Servo Mode Audio Mode Power Mode OP Alignment Mode key key + key + key x x key key .or Overall Adjustment Mo

31、de x Press and hold down keyRelease xkey Display segment check mode (Main unit only) 2. When the test mode display shows “100”, “200”, “300”, “500”, “600”, “700”, “800”, or “900”, the optical pickup can be moved inside and outside of the SLED perimeter by continuously press- ing the ( N or . keys on

32、 the main unit. The current display is retained as long as either the PLAY MODE/DISPLAY key on the main unit or the PLAY MODE key on the remote control unit is pressed and held. 4-2-3. How to release the TEST MODE When method 1 was used: Turn off the power and open the solder bridge on BP801 on the

33、main board. Note: The solder should be removed clean. The remaining solder may make a short with the chassis and other part. When method 2 or 3 was used: Turn off the power. Note: If electrical adjustment (see page 8) has not been finished completely, always start in the test mode. (The set cannot s

34、tart in normal mode) 4-3. TEST MODE STRUCTURE * Manual mode operation can only be performed via the remote control unit. Use the connection tool to connect the remote control unit. The display of the main unit shows “Adj”. Remote control LCD Ver 1.2 2001.12 8 MZ-E300 Note: In the Power mode, the ite

35、m title display is only displayed. 5. To terminate the Manual mode and return to the TEST MODE, press x key. 4. During each test mode, the display is changed from one to another each time DISPLAY key is pressed (Remote control only). 4-5. OVERALL ADJUSTMENT MODE 4-5-1. Outline of the function This m

36、ode is designed to adjust the servo system automatically by going through all the adjustment items. Usually, this mode is used to perform automatic adjustments when servicing the set. 4-6. NV RESET Power: Connect the battery terminals to a stable DC 1.5V power supply, or insert fresh batteries (size

37、 “AA”, IEC “LR6”). Two different methods apply for NV reset, depending on whether the main unit or a remote control unit is used. NV reset via main unit 1. Enter test mode. 2. Use the key or the . key to set the device to Overall Adjustment mode. 021 AAAS CC 021 AAAS CC Flash CC 021 AAAS CC 3. Each

38、test item is assigned with a three-digit item number. The 100th place is a major item, 10th place is a middle item, and unit place is a minor item. Change Major Item Change Middle Item Change Minor Item Change Adjustment Value Write Adjustment Value . key : 100th place of mode number increase + key

39、: 100th place of mode number decrease key : 10th place of mode number increase + key : 10th place of mode number decrease key : Up + key : Down key : When adjusted value is changed : Adjusted value is written. When adjusted value is not changed : That item is adjusted automatically. keykey x key x N

40、 key N key : Unit place of mode number increase key : Unit place of mode number decrease N X 011 XXXSXX Address Value (TE) (PLAY Mode) 200 mV/DIV, 1 s/DIV 2 IC501 8, 9, 0, qa (IY, IX, JX,JY) (PLAY Mode) 200 mV/DIV, 500 ns/DIV 3 IC501 ed (RF), IC601 9 (EFMIN) (PLAY Mode) 400 mV/DIV, 1 s/DIV 4 IC501 r

41、s (FE), IC601 wa (FE) (PLAY Mode) 200 mV/DIV, 1 s/DIV 5 IC601 y; (XIN) 400 mV/DIV, 20 ns/DIV 6 IC551 5 (PWM), IC801 eh (CLV V CON) (PLAY Mode) 1 V/DIV, 2 s/DIV 7 IC551 2, 3, 4 IC801 rf, rg, rh (CLV U CON, CLV V CON, CLV W CON) (PLAY Mode) 1 V/DIV, 5 ms/DIV 8 IC551 1, tg, th (CPUO, CPWO, CPVO) IC801

42、el, rs, rd (CLV U MON, CLV V MON, CLV W MON) 1 V/DIV, 5 ms/DIV 1.1 Vp-p 11.5 s 2.2 Vp-p 16.934MHz 2.2 Vp-p 5.76 s 9 IC551 ta, ts, td, tf (COM, CPWI, CPVI, CPUI) 400 mV/DIV, 5 s/DIV 0 IC801 qh (XOUT) 1 V/DIV, 20 ns/DIV qa IC901 th (CLK) 1 V/DIV, 2 s/DIV 26 MZ-E300 IC BLOCK DIAGRAMS IC301 TA2131FL-EL

43、V REF MT SW BST SW BEEP 19 20 21 22 23 24 181716151413 PW SW 12 11 10 8 7 BST1 9 BST2 654321 BST AGC PW B PW A ADD TC MT VCC INR INL BEEP OUTB BEEP OUTA +B OUTL PWR GND OUTR DET AGC IN BST OUT BST NF2 LPF2 BST NF1 LPF1 VREF VREF IN GND BEEP IN BST SW MUTE STB IC501 SN761057DBT 1TE REXT Wpp-LPF VREF

44、C D D-C Iy Ix Jx Jy A A-C B ADIP-IN FE ABCD AVCC OFC-1 OFC-2 PS LP EQ AGND RF CCSL2 VC XRST SCK SBUS VREF075 PEAK BOTM DGND OFTRK S-MON TON-C CIG CDN ADFG DVDD PD-NI PD-I PD-O 43 44 TWpp PK/BTM Aw CSLO VREF075 A-C D-C Malfa Mij AwBPF Dw DwBPF 42 38 37 36 35 34 31 30 29 28 27 26 25 24 23 39 41 40 2 3

45、 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 A+B+C+D I+J NPP TON CSL Aw+Dw TON Peak TON Botm ADIP TE TEMP 33 32 S-MONITOR TE RF FE APC ADIP T-ON SERIAL I/F PEAK/BOTM ABCD Tpp/Wpp 27 MZ-E300 IC551 SC111257FCR2 56 55 424140 CPUO W1 V1 U1 PWM OE 7 VM1 RO1 8 FO1 910 VM12 PGND1 11 RO2 12 PGND2 13

46、FO2 CPAIP CPAIM CPBIP CPBIM CPAO CPB0 VM3 RO3 FO3 VM34 PGND3 RO4 PGND4 FO4 14 15 16 17 18 19 20 3938373635343332313029 28 27 26 25 24 23 22 21 123456 54 53 52 51 50 49 48 47 46 45 44 43 VM4 R14 F14 R13 F13 VG VC GND1 PWM24 F11 R11 F12 R12 VM2 PGNDW WO VMVW VO PGNDUV UO VMU GND2 CPW1 CPV1 CPU1 COM CP

47、WO CPVO 3 PHASE CONTROL BIAS VCPRE DRIVERPRE DRIVER H-BRIDGE CONTROL H-BRIDGE CONTROL VC VG VC VG VC VCVC VG PRE DRIVERPRE DRIVER H-BRIDGE CONTROL H-BRIDGE CONTROL VC VG VC VG VC VG VCVC PRE DRIVER 28 MZ-E300 IC901 XPC18A32FCR2 56 55 424140 VLON XWK1 XWK2 XWK3 XWK4 VSTV 7 VRMC GND 8 VL VLO 910 VL 11 L2 12 P