Panasonic-SAAK250E-cs-sm 电路图 维修手册.pdf

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1、RMS output power THD 10%, both channels driven 1 kHz50 W per channel (3 ) Total output power100 W n FM/AM TUNER, TERMINALS SECTION Preset stationFM 20 stations AM 15 stations Frequency Modulation (FM) Frequency range87.5 to 108.0 MHz (50 kHz steps) Sensitivity4.0 V (IHF) S/N 26 dB2.2 V Antenna termi

2、nal(s)75 (unbalanced) Amplitude Modulation (AM) Frequency range522 to 1629 kHz (9 kHz step) Sensitivity S/N 20 dB (at 999 kHz)560 V/m Music Port input jack TerminalStereo, 3.5 mm jack Sensitivity100 mV, 4.7 k Phone jack TerminalStereo, 3.5 mm jack n CASSETTE DECK SECTION Track system4 track, 2 chann

3、el Heads 2007 Matsushita Electric Industrial Co. Ltd. All rightsreserved.Unauthorizedcopyingand distribution is a violation of law. SA-AK250E SA-AK250EB SA-AK250EG SA-AK250EE Colour (S). Silver Type Record/playbackSolid permalloy head ErasureDouble gap ferrite head MotorDC servo motor Recording syst

4、emAC bias 100 kHz Erare systemAC erase 100 kHz Tape speed4.8 cm/s Overall frequency response (+3, -6 dB) at DECK OUT NORMAL35 Hz to 14 kHz S/N Ratio50 dB (A weighted) Wow and flutter0.18 % (WRMS) Fast forward and rewind timeApprox. 120 seconds with C-60 cassette tape n DISC SECTION Disc played 8 cm

5、or 12 cm (1) CD-Audio (CD-DA) (2) CD-R/RW (CD-DA, MP3* formatted disc) (3) MP3* *MPEG-1 Layer 3, MPEG-2 Layer 3 Bit rate MP332 kbps to 320 kbps Sampling frequency MP332 kHz, 44.1 kHz, 48 kHz CD-DA44.1 kHz CD Stereo System Notes: This models CD mechanism changer unit is CRS1. Please refer to the orig

6、inal Service Manual (Order No. MD0509368C0) for this mechanism. Specifications ORDER NO. MD0704052CE RadioFans.CN 收音机爱 好者资料库 Decoding16 bit linear Digital filter8 fs D/A converterMASH (1 bit DAC) Pick up Wavelength780 nm Beam SourceSemiconductor laser Audio output (Disc) Number of channels2 (Stereo)

7、 (FL, FR) n GENERAL Power supply (For E/ EG/ EE only)AC 230 V, 50Hz (For EB only)AC 230 to 240 V, 50Hz Power consumption (For E/ EG/ EE only)90 W (For EB only)95 W Powerconsumptioninstandby mode 0.5 W Dimensions (W x H x D)250 x 330 x 323 mm Mass (For E/ EG/ EE only)6.3 kg 1 Safety Precautions 4 1.1

8、. General Guidelines 4 1.2. Caution for AC Mains Lead 5 1.3. Before repair and adjustment 5 1.4. Protection Circuitry 6 1.5. Safety Part Information 6 2 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices 6 3 Handling Precautions For Traverse Unit 8 4 Precaution

9、of Laser Diode 10 5 About Lead Free Solder (PbF) 11 5.1. Service caution based on legal restrictions 11 6 Accessories 12 7 Operating Procedures 13 7.1. Main Unit Key Buttons Operations 13 7.2. Remote Control Key Buttons Operations 13 8 New Features 14 8.1. Using the Music Port 14 9 Self diagnosis an

10、d special mode setting 15 9.1. Service Mode Summary Table 15 9.2. Special Mode Table 1 15 9.3. Reliability Test Mode (CRS1 Mechanism) 18 9.4. Error code Table Display 20 10 Assembling and Disassembling 25 10.1. Caution 25 (For EB only)7.1 kg Operating temperature range+5 to +35C Operating humidity r

11、ange5 to 90% RH (no condensation) n SYSTEM SC-AK250 (E)Music center: SA-AK250 (E) Speaker: SB-AK250 (EG) SC-AK250 (EB)Music center: SA-AK250 (EB) Speaker: SB-AK250 (EG) SC-AK250 (EG)Music center: SA-AK250 (EG) Speaker: SB-AK250 (EG) SC-AK250 (EE)Music center: SA-AK250 (EE) Speaker: SB-AK250 (EG) For

12、 Information on speaker system, plesae refer to the original Service Manual (Order No. MD0704053CE) for SB-AK250EG-S. Notes: 1. Specifications are subject to change without notice. Mass and dimensions are approximate. 2. Total harmonic distortion is measured by the digital spectrum analyzer. 10.2. D

13、isassembly flow chart 26 10.3. Main Parts Location 27 10.4. Disassembly of Top Cabinet 28 10.5. Disassembly of CD Changer Unit (CRS1) 28 10.6. Disassembly of Rear Panel 29 10.7. Disassembly of Main P.C.B. 30 10.8. Disassembly of Transformer P.C.B. 30 10.9. Disassembly of Power P.C.B. 31 10.10. Disas

14、sembly of Front Panel Unit 31 10.11. Disassembly for Panel P.C.B. 32 10.12. Disassembly of Tact Switch P.C.B. 33 10.13. Disassembly of Deck mechanism unit 33 10.14. Disassembly of Deck P.C.B. 33 10.15. Disassembly of Traverse Unit 34 10.16. Disassembly for Deck Mechanism 35 10.17. Disassembly of Dec

15、k Mechanism P.C.B. 38 10.18. Disassembly of cassette lid 39 10.19. Rectification for tape jam problem 39 11 Service Fixture and Tools 41 12 Service Positions 41 12.1. Checking and Repairing of Main P.C.B. 41 12.2. Checking and Repairing of Transformer P.C.B. 42 12.3. Checking and Repairing of Panel,

16、 Deck /Serial I/P (No connection) 17BA1-Motor O/P (1);/Serial I/P (No connection) 18PRAMVSS33-GND (DRAM) 19PRAMVDD33-Power Supply Voltage (DRAM) 20PRAMVDD15-Power Supply Voltage (+1.6V) 21SPOUTOSpindle Drive O/P 22PCI/OSpindle motor drive O/P signal 23TRVPOTraverse Drive O/P (+ve) 24TRPOTracking Dri

17、ve O/P (+ve) 25FOPOFocusing Drive O/P (+ve) 26DVSS1-GND 27IOVDD2-Digital Power Supply Voltage 2 (I/O) 28DVDD1-Digital Power Supply Voltage 1 (Built-In) 29SRVMON0-Servo Monitor (0) O/P (No connection) 30SRVMON1-Servo Monitor (1) O/P (No connection 31AVSS2-GND 32OSCIN-Oscillating Input 33CTRCRS-Tracki

18、ng Cross Comparator Terminal 34VREF-+Vref Supply Voltage 35EITracking Input Signal 1 36FITracking Input Signal 2 37DIFocusing Input Signal 4 38BIFocusing Input Signal 2 39CIFocusing Input Signal 3 40AIFocusing Input Signal 1 41PDIAPC Amp I/P 42LDOLaser Drive Current O/P 43CENV-Detection Capacitance

19、Connection terminal 44RFENVORF Envelope O/P 45RFOUTORF Summing Amp O/P 46RFINISGC I/P 47AVDD2-Analog Power Supply voltage 2 (For DSL/PLL) 48ARFDC-AGC Capacitive Connection Terminal 49ARFOUTOAGC Output 50ARFFBIARF Feedback Signal I/P 51ARFINIAudio RF Signal I/P Pin No.MarkI/OFunction 52DSLF-Loop Filt

20、er Terminal (For DSL) 53IREFIReference I/P 54PLLF-PLL Loop Filter Terminal (Phase Compare) 55PLLF0-PLL Loop Filter Terminal (Speed Compare) 56OUTLOAudio O/P (LCH) 57AVSS1-GND 58AVDD1-Analog Power Supply Voltage 1 59OUTROAudio O/P (RCH) 60DVSS3-GND3 (Digital Circuit) 61NSRVMONONOServo Motor O/P Enabl

21、ing 62EXT0OExpansion O/P Port 0 63EXT1OExpansion O/P Port 1 64EXT2OExpansion O/P Port 2 65FLAG-Flag Signal O/P (No connection) 66TX-Digital Audio Interface O/P signal 67MCLKIMicro-Computer Command Clock I/P 68MDATAIMicro-Computer Data I/P 69MLDIMicro-Computer Load I/P 70STATOStatus Signal O/P 71*BLK

22、CKOSubcode Blk Clock 72NRSTOLSI Reset Signal 73*DQSYTXT-Pack Signal O/P for CD-Text data (No connection) 74*SMCK-Micro-Computer Clock O/P (No connection) 75*PMCK-IOCNT Serial data O/P (Synchronous O/P) (No connection) 76DVDD2-Digital Power Supply Voltage 2 (+1.5V) 77IOVDD1-Digital Power Supply Volta

23、ge 1 (For I/O) 78DVSS2-GND2 (For Digital Circuit) 79NTEST2ITest Mode Setting (ON:H) 80X2OCrystal Oscillating Circuit O/P 81X1ICrystal Oscillating Circuit I/P 82NTESTITest Mode Setting I/P (ON:H) 83D2I/OData Sigmal O/P 2 84D1I/OData Signal O/P 1 85D0I/OData Signal O/P 0 86D3I/OData Signal O/P 3 87D4I

24、/OData Signal O/P 4 88D5I/OData Signal O/P 5 89D6I/OData Signal O/P 6 90D7I/OData Signal O/P 7 91D15I/OData Signal O/P 15 92D14I/OData Signal O/P 14 93DRVDD-I/O Power Supply Voltage (DRAM) 94D13I/OData Signal O/P 13 95D12I/OData Signal O/P 12 96D11I/OData Signal O/P 11 97D10I/OData Signal O/P 10 98D

25、9I/OData Signal O/P 9 99D8I/OData Signal O/P 8 100SDRCKOClock Signal O/P 22 Terminal Function of ICs 22.1. IC7001 (MN6627954MA) Servo Processor,Digital Signal Processor/Digital filter and D/A Converter 84 SA-AK250E / SA-AK250EB / SA-AK250EG / SA-AK250EE Pin No.MarkI/OFunction 1IN2IMotor Driver 92 In

26、put 2PC2ITurntable Motor Drive Signal (“L”:ON) 3IN1IMotor Drive (1) Input 4PC1-Traverse Motor Drive Signal (“L”): ON) 5-8N.C.-No Connection 9PGND1-Ground Connection (1) for Drive 10PVCC1-Power Supply (1) for Drive 11D1-OMotor Drive (1) reverse - action output 12D1+OMotor Drive (1) forward - action o

27、utput 13D2-OMotor Drive (2) reverse - action output 14D2+OMotor Drive (2) forward - action output Pin No.MarkI/OFunction 1LM_1-No connection 2D_PORT DET1-No connection 3D_PORT DET2-No connection 4RDS_DAT-No connection 5RDS_CLK-No connection 6IP_LINK-No connection 7F_HOPOFrequency Hopping 8BYTE-Exter

28、nal Data Bus Width Select Input (Connect to Ground) 9CNVSS-Flash Mode Terminal 10Xcin-32.768 kHz Sub Clock 11Xcout-32.768 kHz Sub Clock 12/RESET-/RESET Input (ACTIVE L) 13Xout-10 MHz Main Clock 14Vss-Ground (0V) 15Xin-10 MHz Main Clock 16Vcc-Power Supply (+5V) 17/NMI-Connect to Vcc (+5V) 18RMTIRemot

29、e Control Input 19BLKCKICD Block Clock Input (Inverted) 20SYNCIAC Failure Detect Input 21D0OSerial Output Data 22DIISerial Input Data 23S/WOOFER CSISubwoofer Chip Select 24SW_LVL1-No connection 25SW_LVL2-No connection 26ASP DATOASP Data 27ASP_CLKOASP Clock 28FL CSIFL Chip Select 29PLL_DATAITuner PLL

30、 Data 30PLL_CLKITuner PLL Clock 31USB_SDA (TxD)-No connection 32USB_SCL (RxD)-No connection 33USB_RST-No connection 34XM_MUTE (BUSY)-No connection 35XM_TX_OUT-No connection 36XM_RX_IN-No connection 37XM_I2S_RATE-No connection 38XM_LINK ACTIVE-No connection 39MUTE_DAOD-Amp Muting Control 40MUTE_AOAud

31、io Muting Control 41EE_CS/EFP/EPMOEEPROM Chip Select (Flash EPM for On board writer) 42EE_CLKOEEPROM CLOCK Pin No.MarkI/OFunction 15D3-OMotor Drive (3) reverse - action output 16D3+OMotor Drive (3) forward - action output 17D4-OMotor Drive (4) reverse - action output 18D4+OMotor Drive (4) forward -

32、action output 19PVCC2-Power Supply (2) for Driver 20PGND2-Ground Connection (2) for Driver 21-24N.C.-No Connection 25VCC-Power Supply terminal 26VREF-Reference Voltage Input 27IN4IMotor Driver (4) Input 28IN3IMotor Driver (3) Input Pin No.MarkI/OFunction 43EE_DATI/OEEPROM DATA 44XM_DAC_RESET-No conn

33、ection 45XM_ANT_REV-No connection 46PCONT/EFP/CSOPower Control Output 47DCDETIDC Detect Input 48XM_RST-No connection 49XM_PCONT-No connection 50STANDBYOFor Digital AMP 5-0v during FHOP 51VOL_LEDOVolume LED Drive 52CEITUNER CE 53DMTODeck mute at mecha transition. L=mute OFF, H=mute ON 54BOTTOM_SWIBot

34、tom switch for CRS1 55UP_SENSORIUp/Down sensor for CRS1 56PLGOPlunger Control O/P 57PHOTOIPhoto (SG mechanism only) 58MTRI/ODeck motor control (“L” for motor OFF) 59RECI/OH when record circuit is operating 60MMOD0IMicon Mode Switching for USB Version Up using CD 61PAM CSIPAM Region Model Chip Select

35、 62VCC-Power Supply (+5V) 63H BASS_LEDOHarmonic Bass LED Drive 64Vss-Ground (0V) 65D-PORT_R-SKIP-No connection 66D-PORT_F-SKIP-No connection 67D-PORT_STOP-No connection 68D-PORT_RES2-No connection 69D-PORT_RES1-No connection 70FL_CSOFL Driver Chip Select 71FL_DOUTOSerial Data To FL Driver 72FL_CLKOS

36、erial Clock To FL Driver 73VOL_LED_CSIVOL LED Chip Select 74USB_REQ-No connection 75STATUSICD Servo LSI Status Input 76MLDI/OCD Command Load Output 77MDATA_OUTI/OCD Command Data Output 78MCLKI/OCD Command Clock Output 79/RESET_SWICD Limit Switch Input for the most Inner Point (Active Low) 80HOME_SWI

37、Home Switch for CRS1 22.2. IC7002 (BA5948FPE2) IC 4CH Drive 22.3. IC2801 (C2CBYY000482) System Microprocessor IC 85 SA-AK250E / SA-AK250EB / SA-AK250EG / SA-AK250EE Pin No.MarkI/OFunction 81CD_RSTI/OCD Reset output 82CLOSE_SWICLOSE switch for CRS1 83OPEN_SWIOpen switch for CRS1 84CWOCRS1 motor CW 85

38、CCWOCRS1 motor CCW 86ST_SWIStock switch for CRS1 87PLAY_SWIPlay switch for CRS1 88PLUNGEROPlunger for CRS1 89REG-Region Setting 90VOL_JOGIVolume jog 91D-PORT_ PCONT-No connection 92KEY3IKey 3 Input 93KEY2IKey 2 Input 94KEY1IKey 1 Input 95DECK_AD1IDeck AD input 1 96AVSS-Analog Power Supply Input (Con

39、nect to GND) 97DECK_AD2IDeck AD input 2 98VREF-Reference for A-D (5V) 99AVCC-Analog Power Supply Input 100DEMO_SETI(H= Default demo On, L= Default demo off) 86 SA-AK250E / SA-AK250EB / SA-AK250EG / SA-AK250EE 23 Exploded Views 23.1. Cabinet Parts Location SA-AK250E / SA-AK250EB / SA-AK250EG / SA-AK2

40、50EE 87 SA-AK250E / SA-AK250EB / SA-AK250EG / SA-AK250EE 88 23.2. Deck Mechanism Parts Location (RAA4403-S) SA-AK250E / SA-AK250EB / SA-AK250EG / SA-AK250EE 89 23.3. Packaging SA-AK250E / SA-AK250EB / SA-AK250EG / SA-AK250EE 90 Notes: Ref. No.Part No.Part Name & DescriptionRemarks CABINET AND CHASSI

41、S 1J3CCBC000016TUNER PACKM 2REEV013921P FFC (DECK-MAIN)M 3REEV014022P FFC (CD-MAIN)M 5REEV019030P FFCM 6REEX074714P FFC WIREM 7RGKV0158-KCD LIDM 9RGLV0069-QVOLUME KNOB LIGHTM 10RGLV0070-QPOWER BUTTON LIGHTM 11RGPV0105B-SFRONT PANELM 12RGRV0052N-AREAR PANELMEG/ E 12RGRV0052N-DREAR PANELMEB 12RGRV0052

42、N-BREAR PANELMEE 14RGUV0163-KSELECTOR BUTTONM 15RGUV0164-SCD CHANGER/POWER BTNM 16RGUV0165-S5CD CHANGE BUTTONM 17RGUV0166-KFUNCTION BUTTON LM 18RGUV0167-KFUNCTION BUTTON RM 19RGUV0176-1S5 CONTROL BUTTONM 21RGWX0072-1SVOL KNOBM 22RHD26046-LSCREWM 23RMC0158-S2TRANSISTOR HOLDERM 24RHD30007-1SJSCREWM 25

43、RHD30111-3SCREWM 26RHD30119-SSCREWM 27RKA0072-KJLEG CUSHIONM 28RKFV0062-1SCASSETTE LIDM 29RKMV0071-SJTOP PANELM 30RKWV0068K-KFL WINDOWM 31RMBV0042-2CASS LID SPRINGM 32RMBV0052DVD LID SPRINGME/ EB/ EG 32RMBX0049DVD LID SPRINGMEE 33RMGX0033CUSHION RUBBERM 34RMGX0044-1D.AMP. INSULATORM 35L6FALEFH0030FA

44、N UNITM 36RMKX0113-3CD CHASSISM 38RMKX0118ABOTTOM CHASSISM 39RMVV0073-KFL WINDOW BACKGROUNDM Ref. No.Part No.Part Name & DescriptionRemarks 44RUS757ZAACASS HALF SPRINGM 45RXGX0002DAMPER GEARM 46RXXV0048HEAT SINK UNITM 48XTV3+10GFJ-MSCREWM 49XTW3+12TFJSCREWM 50XTWS3+6TFJSCREWM 51REXX03259P FLAT WIREM

45、 52REXX0324-19P FLAT WIREM 53RMNV0079-1FL HOLDERM 55XTW3+10TFCSCREWM CASSETTE DECK 101RED0067-2P/B HEADM 103RDG0300REEL BASE GEARM 104RDG0301WINDING RELAY GEARM 105RDK0026-4MAIN GEARM 107RDV0033-4WINDING BELTM 108RDV0064-1CAPSTAN BELTM 110RMB0312TRIGGER LEVER SPRINGM 111RMB0400REEL SPRINGM 112RMB040

46、3HEAD PANEL SPRINGM 113RMB0404BRAKE ROD SPRINGM 114RMB0406-5FR LEVER SPRINGM 115RMB0408THRUST SPRINGM 116RML0370-4TRIGGER LEVERM 117RML0371FR LEVERM 118RML0372-2WINDING LEVERM 119RML0374-2EJECT LEVERM 120RMM0131-1BRAKE RODM 121RMM0133-1EJECT RODM 122RMQ0519REEL HUBM 123RMS0398-1MOVING COREM 124RXQ04

47、70-2PLUNGER ASSYM 125RMC0061PACK SPRINGM 126RXF0061-1FLYWHEEL F ASSYM 128RXG0040FF RELAY GEAR ASSYM 129RMK0283A-2SUB-CHASSISM 130RXL0124PINCH ROLLER F ASSYM 130-1RMB0401PINCH ARM SPRING FM 24 Replacement Parts List Important safety notice: Components identified bymark have special characteristics im

48、portant for safety. Furthermore, special parts which have purposes of fire-retardent (resistors), high-quality sound (capacitors), low noise (resistors), etc are used. When replacing any of these components, be sure to use only manufacturers specified parts shown in the parts list. The parenthesized

49、 indications in the Remarks columns specify the areas or colour. (Refer to the cover page for area or colour) Parts without these indications can be used for all areas. Warning: This product uses a laser diode. Refer to caution statements on “Precaution of Laser Diode”. Capacitor values are in microfarads (F) unless specified otherwise, P= Pico-farads (pF), F= Farads. Resistance values are in ohms, unless specified otherwise, 1K=1,000 (OHM). The marking (RTL) indicates that the Retention Time is limited for t