sony_MZ-R5ST_training 维修电路图.pdf

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1、Confidential PORTABLE MINI DISC RECORDER NEW TECHNICAL THEORY FOR SERVICING MZ-R5ST OPERATION MANUAL 收音机爱好者资料库 Ra d i o Fa n s .CN Confidential 2 Contents Page 1. BLOCK DIAGRAMS3 1-1. Block Diagram (MZ-R5ST)3 1-2. Block Diagram (MZS-R5ST)3 2. FUNCTIONS AND FEATURES9 3. CIRCUIT THEORY OF MZ-R5ST STAT

2、ION 11 3-1. System Configuration 11 3-2. Microprocessor Interface 17 3-3. Power Supply Circuit 19 3-4. Charging Circuit27 3-5. System Backup Circuit28 3-6. Key Input and Switch Detection 31 3-7. MiniDisc Recorder Connection and Removal 37 3-8. Mute Circuit 38 3-9. LCD Backlight Illuminating Circuit

3、40 3-10. Clock Adjustment41 4. SIGNAL CIRCUIT42 4-1. Recording Circuit 42 4-2. Playback Circuit 49 5. MZ-R5ST MiniDisc RECORDER POWER SUPPLY CIRCUIT THEORY53 5-1. Types of Power Supply 53 5-2. Identifying Power Supply 54 5-3. Circuit Voltage54 5-4. Theory When MiniDisc Recorder Is Operated On Batter

4、y60 This NEW TECHNICAL THEORY FOR SERVICING describes theory of station (MZS-R5ST) and power supply circuit of MiniDisc recorder (MZ-R5ST). Refer to MZ-R30 NEW TECHNICAL THEORY FOR SERVICING for theory of MiniDisc recorder. 收音机爱好者资料库 Ra d i o Fa n s .CN Confidential 3 4 5 1-1. Block Diagram (MZ-R5ST

5、) 1. BLOCK DIAGRAMS COMPA- RATOR OVER WRITE HEAD DRIVE Q401-404 CB AD IJ F E RF AMP IC501 RF AMP, FOCUS/TRACKING ERROR AMP MORFO RF AGC PEAK & BOTTOM EQ B.P.F 1 2 48 47 4640 AGCI RFO EQ WBL 3T I-V AMP 4 5 6 7 I-V AMP B.P.F 3T 8 9 AT AMP 12 ABCD AMP FOCUS ERROR AMP TRACKING ERROR AMP 2930 DECODER SER

6、IAL/ PARALLEL CONVERTER V-I CONVERTER LD/PD AMP AUTOMATIC POWER CONTROL COMMAND EQ 3T 00XWBL 11 10 MORFI APC REF PD APC 32 17 16 18 20 XLAT SCLK SWDT FOCNT ADFG 28 26 34 35 33 36 37 SE TE FE ABCD AUX BOTM PEAK 38 RF I J A B C D F E DETECTOR OPTICAL PICK-UP BLOCK (KMS-280A/J2N) I J A B C D F E LASER

7、ON DIODE ILCC PD VR SLED MOTOR DRIVE SPINDLE MOTOR DRIVE FOCUS COIL DRIVE TRACKING COIL DRIVE 22 3XPS 11 13 8 29 6 3121 16 17 15 18 M FOCUS COIL TRACKING COIL SLED MOTOR M902 2-AXIS DEVICE FCS+ FCS TRK+ TRK 2.8V VC K VCC VC SLED/SPINDOLE MOTOR DRIVE, FOCUS/TRACKING COIL DRIVE SFDR SDDR FFDR FRDR TFD

8、R TRDR SPRD SPFD SFDR SDDR FFDR FRDR TFDR TRDR HR901 OVER WRITE HEAD 55 562 63 66 64 65 74 73 79 82 81 80 83 78 100 58 59 60 61 52 51 FILTER EFMO PCO FILI FILO CLTV PLL ASYO ASYI RFI PEAK BOTM AUTO SEQUENCER EFM/ACIRC ENCODER/DECODER SHOCK PROOF MEMORY CONTROLLER ATRAC ENCODER/DECODER DIGITAL AUDIO

9、INTERFACE SAMPLING RATE CONVERTER SUBCODE PROCESSOR CLOCK GENERATOR SERVO DIGITAL SIGNAL PROCESSOR 26 XBCK 25 LRCK 16OSCI 17OSCO 12 DQSY 11 SQSY 21 DIN 24 DADT 23 ADDT 22 DOUT 94 1 MNT0 2 5 SWDT 6 SCLK 7 XLAT 8 SRDT 9 SENS MONITOR CONTROL CPU INTERFACE MNT1 ANALOG MUX ABCD AUX SE TE FE ADIP DEMODULA

10、TOR/ DECODER ADFG SPINDLE SERVO A/D CONVERTER FOCNT DTRF CKRF XLRF AUTOMATIC POWER CONTROL PWM GENERATOR APCREF 9392 9188 8986 85 SPRD SPFD SFDR SDDR FFDR FRDR TFDR TRDR 10 13 WR PWR RST DIGITAL SIGNAL PROCESSOR IC503 15 TX BCK LRCK LC UNIT LCD1 17371215 SEG0SEG20COM0COM3 LCD DRIVER SYSTEM CONTROL I

11、C811 IC801 10 XCS 11 C/D 16 XRESET PD LD SLP SW Q703 WR PWR 3 3 11 10 EFM LOGIC LOGIC CONT DRIVER25 2 1 16 17 14 19 REC DRIVE IC506 +2.8V Q505 (2/2) Q505 (1/2) H BRIGE IC702 L512 VC IC702 CK 8 1 13 HF MODULE MOD Q502 FCS+ FCS TRK+ TRK 27 FS256FS256 X501 22.5MHz Q503 (2/2) Q503 (1/2) 4 MODULE DET IC5

12、10 16 2.8V 32 29 47 46 . 48 49 . 34 38 43 45 44 42 41 6 9 1 2 . 18 19 . 11 15 5 3 4 17 16 A0 A3 A9 XWE XRAS XCAS XOE A9 WE RAS CAS OE D0 D3 A4 A8 A0 A3 DQ1 DQ3 A4 A8 ATRAC MEMORY CONTROL 4M DRAM IC509 19 SPFD CLOCK DET 2 24 90 FS4 9 3 4 21 22 13 1 15 10 20 SPINDLE MOTOR M901 U V COM W SPINDLE MOTOR

13、IC701 DRIVER FG 2.8V ST 1A 10 M 12 5 7 STEPPING MOTOR M903 STEPPING MOTOR DRIVE IC702 16 2 3 15 18 13 VCH BRIGE ST 2A ST 1B ST 2B 95 FG IN 19XSTBY 1 2 4 4 2 IC511 IC512 9867 18 17 5 D IN D OUT AD DATA DA DATA XBCK XRCK FS256 CN802 TO ST SECTION MIC PLUG IN POWER J301 R-CH MIC DET Q301 5 2 3 IN CE OU

14、T 2.8V A MIC POWER IC301 20 0 MIC ATT MIC ATT Q101 6 5 7 IC302 S301 MIC AMP 44 CLOCK DIVIDER 4 5 3 2 1 47 AUDIO I/F ADC DAC CONTROL I/F 26 4616 15 14 13 XRSTPD AD/DA CONVERTER IC303 13 R-CH A L OUT 12 A R OUT 65-TO-1 SHIFT REGISTER CONTROL UNIT 5 6 12 313 7 IC305 AUDIO GAIN CONTROL (EVR) 4 BEEP CONT

15、ROL Q311(1/2) MUTE CONTROL Q314 MUTE CONTROL IC306 43 2 Q311(2/2) A MUTE 16 LI + UNREG 5V XSTATION CS0 SDI0 SDO0 SCK0 31242219,2021 1 3 11 16 12 13 PW SW VCC MUTE HP AMP IC805 2.8V A Q313 2.8V A R-CH RVCC DATA KEY2 HEADPHONES J302 DC/DC 13 4 RECHAREABLE BATTERY (NI-MH) BP-DM20 2PCS,3V DRY BATTERY SI

16、ZE AA (IEC DESIGNATION R6) OR RECHAREABLE BATTERY (LITHIUM ION) LIP-8 3.7V 2 3 6 7 1 8 45 +B SWITCH IC808 NG1NG2 ND1 ND2 NS1 NS1 NS2 NS2 D801 Q901 AM3+ AM3 LI+ LI REG Q804,805 D/D 2.8V Q803 IC806 5 D/D RV801 UNREG 5V 2.8V A 2.8V LI + 8 6 5 4 3 V OUT VD IN V OUT VDD LX REG/RESET IC802 MICON +B RVCC S

17、WITCH Q504 IC505 +B IC506 +B UNREG XSTATION UNREG 5V D808 9SD 8SCK 7VDD MICON +B Q801(1/2) TEMP METER 23 1 2.8V RF SW 35 XRST 2 LD ON 6 FG IN 61 71 ST 1A 72 ST 2A 91 ST 1B 92 ST 2B ST 1A ST 2A ST 1B ST 2B 5 SENSE 77 DSI1 69 XLAT 79 SCK1 78 SDO1 7 XSHOCK 76 TCONT 75 DQSY 80 SQSY 4 TX 33 MODE2 34 MODE

18、1 18 CSST 43 SDI0 44 SCK0 45 SDO0 CS0 SDI0 SCK0 SDO0 68 MIC DET 90 PD 99 SDO2 21 SDI2 97 SCK2 89 CS 17 EVR DATA 95 EVR CS 81 BEEP 93 A MUTE 11 DATA 49 KEY R 59 UNREG MNT 60 LI MNT 30 P CONT 29 XAMCN 31 BATT ON 53 AM3 27 DC IN 96 CS NV 1CS 3DI 4DO 2SK NV RAM IC807 36LCD ON 100LCD CS 19LCD CD 94XLCD R

19、ST 38M RST T MARK END S PAUSE T MARK S803 S802 S801 S901-908 FUNCTION KEY D804 KEY ON SWITCH S806,809,810 S808 REC D807 57 KEY 0 13 WP 55 KEY 3 58 KEY 1 70 KEY ON IC803 54 TEMP 32 REC LED MICON +B 63 DBB 2 62 DBB 1 2 1 0 DBB S810 40 XTAL 41 EXTAL 16 CL SDIO 20 CL SCK 1 CL CS 675 32 REAL TIME CLOCK I

20、C804 12MHz X801 32kHz X802 65 PACK IN MEDIA S701 10 PROTECT PROTECT S702 83 REFLCT REFLECT S703 64 INT SW INTIAL S704 9 INLS INLIMIT S705 15 CLOCK CLOCK SET S809 14 OPEN OPEN 1 S817 OPEN 2 S823 25 AVLS 12 HOLD AVLS S811 HOLD S818 S823 RVCC IC505 16 CONV. D803 : PB : REC Signal path. : REC (DIGITAL I

21、N) : PB (DIGITAL OUT) R-channel is omitted. : MIC 收音机爱好者资料库 Ra d i o Fa n s .CN Confidential 6 7 8 1-2. Block Diagram (MZS-R5ST) R L LINE IN ANALOG J303 R-CH 1VCC 3V OUT 2GND OPTICAL DIGITAL IN1 IC308 1VCC 3V OUT 2GND OPTICAL DIGITAL IN2 IC309 SWD 5V 13 145 1 OPT1/2 CONV. IC311 A/B REC RV301 LEVEL C

22、ONV. 5V IC313(1/2) IC315IC101 A/D DIF BUFFER 3V 23 1 17 15 13 12 10 9 4 D IN D OUT DA DATA LRCK XBCK 256FS XSTATION CN951 TO MAIN SECTION 218 317 416 515 614 119 LEVEL CONV. 3V IC307 5V 19 G A IN L6 A IN L +5 SDT IN13 LRCK11 SCLK12 MCLK15 9 DIF0 10 DIF1 16 DEMO0 23 PW DA 24 PW AD Q919 (1/2) Q919 (2/

23、2) Q918 (1/2) Q918 (2/2) Q920 26A OUT L 14SDT OUT A/D,D/A CONV. IC301 23 REG IC314 SWD 5V 6 14 5 4 AD DATA A OUT L A MUTE SDI0 SDO0 SCK0 SCS0 A OUT R UNREG 5V LI + IC313 (2/2) 11 22 20 14 3 1 5 7 6,8 2 IC131 6 7 52 1 IC130IC330 DIF AMP D301 7 LINE AMP IC302 Q301 MUTE CONYROL Q303,304 RV302 Q104 HP A

24、MP IC305 Q102 Q101 9H0W07 D12 CLK13 CS3 14VCC 6 54 2 IC304 EVR REG IC306 SP AMP IC317 Q103 21 REG 5V Q316 MUTE CONYROL Q302 SCK CS DATA L0 AV 5V R-CH R-CH ACTIVE SPEAKER V IN1 GND3 VCC2 J301 IC310 SWD 5V OPTICAL DIGITAL OUT J302 30RST 31 EXTAL DC IN 9V J901LF902 THP901 AU 5V REG Q910 21 3 IC910 AC D

25、ET Q921 5V REG Q907,908 24 8 IC910 1 POWER CONTROL POWER CONTROL Q905,906 32 1 REG IC906 BACK-UP UNREG 5V D902 D903 D909 4 IC905 1 POWER CONTROL 2 Q909 T901 Q911 AV -5V AV +5V D906 LI + + 4 Q902 (1/2) 5 Q902 (2/2) 18 2367 CHARGE CONTROL IC901 LI + SWD 5V SWITCHING Q901,903 45 LI CHARGE IC902 65 MICO

26、N +B /RESET IC908 83 MICON +B D910 Q924 RESET S954 23 IR RECEIVER IC909 1 D904 CHARGE LED DRIVER Q904 LI ON S951 47 SCS0 48 SCK0 49 SDI0 50 SDO0 10 OPE EN 11 OPT 46 BUF EN 78 DIF0 79 DIF1 1 DE EMP 80 XPDDA 60 XPAAD 66 ESC 71 P MUTE 65 ESCK 67 EDATA 22 AC IN 69 LI ON 70 STLI ON 43 LI + MNT 68 LI CHG

27、6 CHARGE LED 56 RMC SC SCK DATA 44AC 23XLI ON 7P CONT 1421 B/L CONTROL Q912,916 IC907 SYSTEM CONTROL LCD +B SWITCH Q915 EL DRIVE Q917 9 BL ON EL901 DB0DB7 12 LCD STB 13 LCD SCK LCD MODULEMICON +B 8 LCD ON MOTOR CONTROL Q913 OPT1OPT2ANALOGOFFPLAYREC MICON +B SYNC REC S614 76 SYNC REC 54 TIMER 1 75 LI

28、NE OPT2 74 LINE OPT1 55 TIMER 2 26 PLAY KEY TIMERINPUT S614 S613S612 27 REC KEY 29 POWER KEY 63 PANEL DOWN REC S611 PLAY S610 POWER S609S630 PUSH OPEN FUNCTION KEY S601-608 S615-629 3842 KEY0KEY4 28 CLOCK KEY CLOCK SET S952 24 XRELEASE 25 XCLOCK 61 XINIT RELEASE S953 XLOCK S655 XINT S656 MOTOR DRIVE

29、 Q914 2 MOTOR CONT 3 M STOP M SWD 5V ARM UP/DOWN 32 XTAL X901 10MHz 16 HEADPHONES J304 LINE OUT L REG 5V NiCd : PB : REC Signal path. : REC (DIGITAL IN) : PB (DIGITAL OUT) R-channel is omitted. BATTERY Confidential 9 MZ-R5ST is the new Sony portable MiniDisc Recorder of the fourth generation using t

30、he wide bit stream technology that is the first in the world as a portable MiniDisc Recorder. MZ-R5ST has the following functions and features. Compact and slim recording/playback unit : The MiniDisc Recorder is made small and compact as it has the limited functions of playback and recording (microp

31、hone recording only), and the editing function is handled by the station. Thus the size as thin as 20.1 mm and as light as 185 g (almost equal to the conventional potable MD player) is realized. Built-in Sampling Rate Converter: MZ-R5ST has the built-in sampling rate converter that enables recording

32、 from digital equipment using other sampling rates as DAT deck or a satellite tuner. (Sampling frequencies: 32 kHz, 44.1 kHz and 48 kHz are supported) Wide Bit Stream Technology: The input circuit, the output circuit and their peripheral circuits operate on the 20-bit audio data so that the maximum

33、performance of the ATRAC IC which operates on 20-bit and higher can be fully utilized. Synchronous Recording Function: When dubbing digital signal from a source digital equipment such as CD player to MZ- R5ST using optical digital cable, operation is simple without the need to operate both the sourc

34、e side equipment and this unit. Time Machine Recording Function: Time Machine recording always stores the input sound into the DRAM IC in MZ-R5ST so that the sound that is two seconds ahead of pressing the record button can be recorded. This functions convenient not to miss recording of the very beg

35、inning of the program when recording off-the-air program of satellite broadcast or FM broadcast. Built-in Rehearsal Function: Editing points can be checked in units of 0.06 seconds in the range of 256 steps (total 8 seconds) from 128 step to +127 step centering around the editing point. This functio

36、n is convenient in the editing such as Divide editing. Built-in UNDO Function: UNDO function lets operator undo an editing operation when operator makes an operational error., Output Jack For Active Speakers: The STEREO-MINI output terminal for active speakers is equipped. Sound volume of the active

37、 speakers can be controlled by key operation of station or key operation of remote controller. 2. FUNCTIONS AND FEATURES Confidential 10 Differences of functions between the 4th generation MiniDisc recorder (MZ-R30) and MZ-R5ST are shown below. Table 2-1 Comparison of functions between the 4th gener

38、ation MiniDisc recorder (MZ-R30) and MZ-R5ST Functions of MiniDisc recorder Headphones output LINE output Digital output Active speaker output LINE input Digital input Microphone input AVLS DBB (Digital Bass Boost) RESUME BEEP Monaural recording Monaural playback Automatic track mark Character input

39、 Sampling rate converter 20-bit wide bit stream Synchro-recording Time Machine recording Timer standby function Program playback Rehearsal function Undo function MZ-R5ST g MiniDisc recorder : G Station side: g MiniDisc recorder : G Station side: MiniDisc recorder : G Station side: g MiniDisc recorde

40、r: G Station side: (2 inputs) MiniDisc recorder: g (External stereo) Station side: G g g g (Always ON) g g g g g MiniDisc recorder : g Station side: G MZ-R30 g g G G g g (1 input) g (External stereo) g g g (Always ON) g g g g g g G g G G G G G Note : The mark in the table indicates the new functions

41、. Confidential 11 12 3-1. System Configuration (1) System Configuration of MiniDisc Recorder (MZ-R5ST). Fig. 3-1 shows system configuration (MZ-R5ST). MiniDisc recorder (MZ-R5ST) is described briefly as follows. First, the flow of signals during recording is described. The MIC IN signal that is pass

42、ed through the microphone amplifier IC302 inputs the AD/DA converter IC303 where the microphone signal is converted to the 16-bit digital data by a built-in A/D converter. The digital signal is sent to the DSP IC503 via the OR gate IC511. During LINE recording , the 20-bit digital data that is A/D c

43、onverted by the station (MZS- R5ST) (refer to the next section of this manual (2) System Configuration of Station (MZS-R5ST) for more details), is input to the DSP IC503 via the OR gate IC511. The other input that is the DIGITAL IN input signal, is input directly to the DSP IC503 . At IC503, signal

44、processing (compression, interleaving, EFM modulation, etc.) is performed on the input digital data to generate the EFM signal. The EFM signal thus generated is recorded on the MO disc via the REC DRIVE IC506. Next, the flow of signals during playback is described. The EFM signal that is read by the

45、 optical pickup is input to the DSP IC503 via the RF amplifier IC501. At IC503, signal processing ( EFM demodulation, de-interleaving, expansion, etc.) is performed on the input EFM signal to generate the DA data. When the MiniDisc recorder (MZ-R5ST) is used as a stand-alone unit, the DA data is sen

46、t to the AD/DA converter IC303 where the DA data is passed through the internal DBB (Digital Bass Boost) circuit, digital filter and is converted to the L- channel and R-channel analog signal by D/A converter. The D/A converted L-channel and R-channel analog signal passes through the audio gain cont

47、rol IC305, headphones amplifier IC805 and then to HEADPHONES. When station unit is connected, the DA data is output to the AD/DA converter IC301 of the station connected. Next, the flow of the servo signals is described below. The error signals that are read by optical pickup are sent to the DSP IC5

48、03 after passing the various error amplifiers inside the RF amplifier IC501. In the DSP IC503, the input error signals are performed the servo calculations by the internal digital servo processor to generate the servo signal. The servo signals are then output and used to drive coils and motors via t

49、he coil/motor drive IC505. The system controller IC801 is described lastly. The system controller IC801 controls the whole system of the MZ-R5ST. The main control functions of the respective ICs and the input signals that are controlled by the system controller IC 801 are shown below. WControls the DSP IC503: Control of the respective servo processings. Selection of mode (recording or playback) of the respective signal processing blocks Control of input sound source (AD data or digital data), etc. WControls the RF amplifier : Selection of mode (PIT or