Panasonic-SAAK240E-cs-sm 电路图 维修手册.pdf

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1、n AMPLIFIER SECTION RMS Output power THD 10%, both channels driven 1 kHz115 W per channel (3 ) Total output power230 W n FM/AM TUNER, TERMINALS SECTION Preset stationFM 15 stations AM 15 stations Frequency Modulation (FM) Frequency range87.50 to 108.00 MHz (50 kHz steps) Sensitivity4.0 V (IHF) S/N 2

2、6dB2.2 V Antenna terminals75 (unbalanced) Amplitude Modulation (AM) Frequency range522 to 1629 kHz (9 kHz step) Sensitivity S/N 20dB (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 2006 Mats

3、ushita Electric Industrial Co. Ltd. All rightsreserved.Unauthorizedcopyingand distribution is a violation of law. SA-AK240E SA-AK240EB SA-AK240EG Colour (S). Silver Type Track system4 track, 2 channel Heads Record/playbackSolid permalloy head ErasureDouble gap ferrite head MotorDC servo motor Record

4、ing systemAC bias 100 kHz Erasing 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 pl

5、ayed 8 cm or 12 cm (1) CD-Audio (CD-DA) (2) CD-R/RW (CD-DA, MP3, WMA formatted disc) (3) MP3/WMA Bit rate MP3, WMA32 kbps to 320 kbps Sampling frequency MP3/WMA32 kHz, 44.1 kHz, 48 kHz CD Stereo System Notes: This models CD mechanism changer unit is CRS1. Please refer to the original Service Manual

6、(Order No. MD0509368C0) for this mechanism. Specifications ORDER NO. MD0512482C2 RadioFans.CN 收音机爱 好者资料库 CD-DA44.1 kHz 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) (FL,F

7、R) n GENERAL Power supply For E/EG onlyAC 230 V, 50Hz For EB onlyAC 230 to 240 V, 50Hz Power consumption95 W Powerconsumptioninstandby mode 0.5 W Dimensions (W x H x D)250 x 330 x 343 mm 1 Safety Precautions 4 1.1. General Guidelines 4 1.2. Caution for AC Mains Lead 5 1.3. Before repair and adjustme

8、nt 5 1.4. Protection Circuitry 6 2 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices 6 3 Handling Precautions For Traverse Deck 7 4 Precaution of Laser Diode 8 5 Handling the Lead-free Solder 9 5.1. About lead free solder (PbF) 9 6 New Features 10 6.1. CRS1 Mec

9、hanism Overview 10 6.2. Music Port 12 7 Accessories 13 8 Operating Instructions Procedures 14 9 Self diagnosis and special mode setting 16 9.1. Special Mode Table 16 9.2. Error code Table 18 10 Assembling and Disassembling 22 10.1. Caution 22 10.2. Disassembly flow chart 23 10.3. Main Parts Location

10、 24 10.4. Disassembly of Top Cabinet 25 10.5. Disassembly of Rear Panel 25 10.6. Disassembly of CD Changer Unit (CRS1) 25 10.7. Disassembly of Main P.C.B. 27 10.8. Disassembly of Transformer P.C.B. 27 Mass6.9 kg Operating temperature range+5 to +35C Operating humidity range5 to 90% RH (no condensati

11、on) n SYSTEM SC-AK240 (E-S)Music center: SA-AK240 (E-S) Speaker: SB-AK240 (EG-S) SC-AK240 (EB-S)Music center: SA-AK240 (EB-S) Speaker: SB-AK240 (EG-S) SC-AK240 (EG-S)Music center: SA-AK240 (EG-S) Speaker: SB-AK240 (EG-S) For information on speaker system, please refer to the original Service Manual

12、(Order No. MD0512445A2) 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. 10.9. Disassembly of Power P.C.B. 28 10.10. Disassembly of Front Panel Unit 29 10.11. Disassembly for

13、 Panel P.C.B. 30 10.12. Disassembly of Deck mechanism unit 31 10.13. Disassembly of Deck P.C.B. 31 10.14. Disassembly of Traverse Unit 31 10.15. Disassembly of optical pickup unit (CD mechanism) 33 10.16. Disassembly of Deck Mechanism 36 10.17. Replacement for cassette lid 38 10.18. Rectification fo

14、r tape jam problem 39 11 Service Fixture and Tools 40 12 Service Positions 40 12.1. Checking and Repairing of Main P.C.B. 40 12.2. Checking and Repairing of Transformer P.C.B. 41 12.3. Checking and Repairing of Panel, Deck Typically the melting point is 50 - 70F (30 - 40C) higher. Please use a high

15、temperature soldering iron. In case of soldering iron with temperature control, please set it to 700 20F (370 10C). Pb free solder will tend to splash when heated too high (about 1100F/600C). When soldering or unsoldering, please completely remove all of the solder on the pins or solder area, and be

16、 sure to heat the soldering points with the Pb free solder until it melts enough. 9 SA-AK240E / SA-AK240EB / SA-AK240EG 6 New Features 6.1. CRS1 Mechanism Overview 6.1.1. General Feature This is a five disc changer mechanism for CD/DVD. The outline figure is shown below. 10 SA-AK240E / SA-AK240EB /

17、SA-AK240EG The mechanism has CHANGE WHILE PLAY function. It open other trays for disc exchanging while one tray is at PLAY position performing recording or reproducing. The mechanism can quickly change all trays with CHANGE ALL function. All trays can be move to OPEN position with one operation. The

18、re is no sensor to indicate presence of disc on any tray. 6.1.2. Hardware composition Below is the hardware components of the mechanism NameFunction Open Switch (OPEN-SW)The switch is used to detect normal tray opening The switch is used for detect tray being manually push/trigger when full open Hom

19、e Switch (HOME-SW)Is used to detect cam gear home position Close Sensor (CLOSE-SENSOR)Used for normal single tray closing Used to detect cam gear rotate to Play Driving position Play Switch (PLAY-SW)Detect TRV clamping complete position Stocking Switch (STOCK-SW)Detect tray completely transfer for p

20、lay position to stocking position UD Sensor (UD-SENSOR)Detect TRV vertical movement position Top Switch (TOP-SW)Detect a default position of TRV vertical movement position Driver ICTo drive Motor MotorMain driving source for changer PlungerSwitching the driving source from motor to: 1. Tray open/clo

21、se 2. Drive tray to play/stock position and TRV vertical movement 6.1.3. Mechanism Operation This mechanism has the following state: 1. Driving of a tray to open/close 2. Up/down operation of a traverse performs a state changes of tray. By using the plunger to lift/release of a switching gear, and t

22、he cam gear to lift/release the function gear the motor can be link to several gear trains to perform various operations. The functions that can be perform in this mechanism are described as below: ConditionExplanation Open current playing trayThe state to change current playing disc. All tray will

23、be open at once and current tray at PLAY position will be expose. Open AllThe state where all trays being driven to OPEN position. The disc can be taken in or out from tray to tray by close tray one by one from top to bottom. StockThe state where the trays are stored in STOCK position PlayThe state

24、where one of the tray 5 trays is being driven to PLAY position and clamped by traverse unit Play QZZCWAT 13.1.1. Tape Speed Adjustment (Deck 1/2) 1. Insert the test tape (QZZCWAT) to DECK 2 and playback (FWD side) the middle portion of it. 2. Adjust Motor VR (DECK 2) for the output value shown below

25、. Adjustment target: 2910 3090 Hz (NORMAL speed) 3. After alignment, assure that the output frequency of the DECK 1 FWD are within 60 Hz of the value of the output frequency of DECK 2 FWD. Fig. 1 13.1.2. Bias Voltage Check 1. Set the unit “AUX” position. 2. Insert the Normal blank tape (QZZCRA) into

26、 DECK 2 and the unit to “REC” mode (use “l REC/STOP” key). 3. Measure and make sure that the output is within the standard value. Bias voltage for Deck 2144mV (Normal) Fig. 2 Fig. 3 13 Adjustment Procedures 13.1.3. Bias Frequency Adjustment (Deck 1/2) 1. Set the unit to “AUX” position. 2. Insert the

27、 Normal blank tape (QZZCRA) into DECK 2 and set the unit to “REC” mode (l use “REC/STOP” key). 3. Adjust L1002 so that the output frequency is within the standard value as below. Standard Value: 89 110 kHz Fig. 4 13.1.3.1. Cassette Deck Section Below is the locations of test points for Deck P.C.B.:-

28、 44 SA-AK240E / SA-AK240EB / SA-AK240EG 13.2. Tuner Section This section include details on the alignment of AM-IF and AM RF adjustment. 13.2.1. AM-IF Alignment 1. Set up the equipments as shown in Fig. 5. 2. Select TUNER mode on selector and set to AM mode. 3. Apply signal as shown in Fig. 5 from A

29、M-SG. 4. Adjust Z2602 accordingly so that the output frequency is maximized at 450kHz in Fig. 6. Fig. 5 Fig. 6 13.2.2. AM RF Adjustment 1. Set up the equipments as shown in Fig. 7. 2. Select TUNER on selector and set to AM mode. 3. Set AM-SG to 520kHz. 4. Receive 520kHz in the unit. 5. Adjust L2601

30、(OSC) so that the EVM-AC is maximized. 6. Set AM-SG to 600Hz. 7. Receive 600Hz in the unit. 8. Adjust L2601 (ANT) so that the EVM-SG is maximized. 9. Set AM-SG to 520kHz. 10. Receive 520kHz in the unit. 11. Adjust L2602 (OSC) so that the EVM-DC value is with 1.10.5V. 45 SA-AK240E / SA-AK240EB / SA-A

31、K240EG Fig. 7 13.2.3. Adjustment Point Below is the locations of alignment points on the Main (Tuner) P.C.B. 46 SA-AK240E / SA-AK240EB / SA-AK240EG 14 Voltage and Waveform Chart Note: Circuit voltage and waveform described herein shall be regarded as reference information when probing defect point,

32、because it may differ from an actual measuring value due to difference of Measuring instrument and its measuring condition and product itself. 14.1. CD Servo P.C.B. /Serial I/P 17BA1N.C. Motor O/P (1);/Serial I/P 18PRAMVSS33-GND (DRAM) 19PRAMVDD15-Power Supply Voltage (DRAM) 20PRAMVDD33-Power Supply

33、 Voltage (+1.6V) 21SPOUTOSpindle Drive O/P 22PCI/OSpindle motor drive O/P signal serial data/Monitoring I/P 23TRVPOTraverse Drive O/P (+ve) 24TRPOTracking Drive O/P (+ve) 25FOPOFocusing Drive O/P (+ve) 26DVSS1-GND 27IOVDD2IDigital Power Supply Voltage 2 (I/O) 28DVDD1-Digital Power Supply Voltage 1 (

34、Built-In) 29SRVMON0N.C. Servo Monitor (0) O/P 30SRVMON1N.C. Servo Monitor (1) O/P 31AVSS2-GND 32OSCINIOscillating Input 33CTRCRSN.C. Tracking Cross Comparator 34VREF-+Vref Supply Voltage 35EITracking Input Signal 1 36FITracking Input Signal 2 37DIFocusing Input Signal 4 38BIFocusing Input Signal 2 3

35、9CIFocusing Input Signal 3 40AIFocusing Input Signal 1 41PDIAPC Amp I/P 42LDOLaser Drive Current O/P 43CENVIDetection Capacitance Connection terminal 44RFENVORF Envelope O/P 45RFOUTORF Summing Amp O/P 46RFINISGC I/P 47AVDD2IAnalog Power Supply voltage 2 (For DSL/PLL) 48ARFDCOAGC Capacitive Connectio

36、n Terminal 49ARFOUTOAGC Output 50ARFFBIARF Feedback Signal I/P 51ARFINIAudio RF Signal I/P 52DSLFILoop Filter Terminal (For DSL) Pin No.MarkI/OFunction 53IREFIReference I/P 54PLLFIPLL Loop Filter Terminal (Phase Compare) 55PLLF0OPLL Loop Filter Terminal (Speed Compare) 56OUTLOAudio O/P (LCH) 57AVSS1

37、-GND 58AVDD1IAnalog Power Supply Voltage 1 59OUTROAudio O/P (RCH) 60DVSS3-GND3 (Digital Circuit) 61NSRVMONONIServo Motor O/P Enabling 62EXT0N.C. Expansion O/P Port 0 63EXT1N.C. Expansion O/P Port 1 64EXT2N.C. Expansion O/P Port 2 65FLAGN.C. Flag Signal O/P 66TXN.C. Digital Audio Interface O/P signal

38、 67MCLKIMicro-Computer Command Clock I/P 68MDATAIMicro-Computer Data I/P 69MLDIMicro-Computer Load I/P 70STATOStatus Signal O/P 71BLKCKOSubcode Blk Clock 72NRSTOLSI Reset Signal 73DQSYTXTN.C. Pack Signal O/P for CD-Text data 74SMCKN.C. Micro-Computer Clock O/P 75PMCKN.C. IOCNT Serial data O/P (Synch

39、ronous O/P) 76DVDD2-Digital Power Supply Voltage 2 (+1.5V) 77IOVDD1-Digital Power Supply Voltage 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

40、 Signal O/P 2 84D1I/OData Signal O/P 1 85D0I/OData Signal O/P 0 86D3I/OData Signal O/P 3 87D4I/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 93DRVDDII/O Power Supply Voltage (DRAM) 94D13I/OData Sign

41、al O/P 13 95D12I/OData Signal O/P 12 96D11I/OData Signal O/P 11 97D10I/OData Signal O/P 10 98D9I/OData Signal O/P 9 99D8I/OData Signal O/P 8 100SDRCKOClock Signal O/P 20 Terminal Function of ICs 20.1. IC7001 (MN6627954MA) Servo Processor,Digital Signal Processor/Digital filter and D/A Converter 84 S

42、A-AK240E / SA-AK240EB / SA-AK240EG Pin No.MarkI/OFunction 1IN2IMotor Driver 92 Input 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 10PVCC1IPower Supply (1) for Drive 11D1-

43、OMotor Drive (1) reverse - action output 12D1+OMotor Drive (1) forward - action output 13D2-OMotor Drive (2) reverse - action output 14D2+OMotor Drive (2) forward - action output Pin No.MarkI/OFunction 1LM_1-Level Meter 2PA_LVL-No Connection 3PLLCEOPLL Chip Select 4RDS_DAIRDS Data Input 5RDS_CLKIRDS

44、 Clock Input 6MODE_A-No Connection 7F_HopOF_Hop for Digital Amp 8BYTE-External Data Bus Width Select Input (Connect to Ground) 9CNVSS-Flash Mode Terminal (Connect to Ground) 10XC_IN-32.768 kHz Sub Clock 11XC_OUT-32.768 kHz Sub Clock 12/RESET-Reset Input (ACTIVE L) 13X_OUT-10 MHz Main Clock 14VSS-Gro

45、und (0V) 15XIN-10 MHz Main Clock 16VCC-Power Supply (+5V) 17/NMI-Connect to Vcc (+5V) 18RMTIRemote Control Input 19BLKCKICD Block Clock Input (Inverted) 20SYNCIAC Failure Detect Input 21ST/DOITuner IF Data/ Stereo Input 22SDITuner Signal Detect Input 23N.C.-No Connection 24SW_LV-1OSub-Woofer Level 1

46、 25SW_LV-2OSub-Woofer Level 2 26ASP_DAOASP DATA 27ASP_CLKOASP CLOCK 2810DB_ATTONo Connection 29PLL_DATOPLL DATA 30PLL_CLKOPLLCLK 31REG8-To GND resistor 32REG7IRegion Setting 7 (MIC)/Flash Rx 33REG6IRegion Setting 6 (RDS)/Flash Clock 34REG5OChip Select/Flash Busy 35REG4ILatin Non Chip Select 36REG3IR

47、egion Setting 3 (Tuner) 37REG2IRegion Setting 2 (Tuner) 38REG1IRegion Setting 1 (Tuner) 39MUTE_DAOMute_DA for Digital Amp 40MUTE_AOAudio Mute 41EE_CS/EFP/EPHOEEPROM Chip Select 42EE_CLKOEEPROM CLOCK Pin No.MarkI/OFunction 15D3-OMotor Drive (3) reverse - action output 16D3+OMotor Drive (3) forward -

48、action output 17D4-OMotor Drive (4) reverse - action output 18D4+OMotor Drive (4) forward - action output 19PVCC2-Power Supply (2) for Driver 20PGND2-Ground Connection (2) for Driver 21-24N.C.ONo Connection 25VCCIPower Supply terminal 26VREFIReference Voltage Input 27IN4IMotor Driver (4) Input 28IN3

49、IMotor Driver (3) Input Pin No.MarkI/OFunction 43EE_DATI/OEEPROM DATA 44N.C.-No Connection 45N.C.-No Connection 46PCONT/EFP/CSOMain Transformer Control Output 47DCDETIDC Detect Input 48-49N.C.-No Connection 50STANDBYOStandby mode 51N.C.-No Connection 52HALF_1IDeck 1 HALF PLAYBACK INPUT 53MODE_1IDeck 1 MODE PLYABACK INPUT 54N.C.-No Connection 55N.C.-No Connection 56PLG1ODeck 1 plunger control 57PLG2ODeck 2 plunger control 58MTRO/IDeck motor control (“L” for motor ON) 59RECO