Technics-SAEH-560-Service-Manual 电路图 维修手册.pdf

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1、Table Of Contents COVER 1 Before Repairs 2 Protection Circuitry 3 Accessories 4 Caution for AC Main Leads 5 Location of Controls 6 Operation Checks and Component ReplacementProcedures 6.1 Checking for the AC IN P.C.B. 6.2 Checking for the operation P.C.B. 6.3 Checking for the main P. C.B. 6.4 Replac

2、ement for the regulator transistor 6.5 Replacement for the power IC 7 To Supply Power Source 8 Self-Diagnostic Mode 8.1 To display the malfunction code 8.2 To return to the normal display 8.3 Display contents 8.3.1 U70 CD, U70 DECK (displayed automatically) 8.3.2 F61 9 Schematic Diagram Notes 10 Sch

3、ematic Diagram 11 Printed Circuit Board Diagram 12 Type Illustration of ICs, Transistors and Diodes 13 Wiring Connection Diagram 14 Terminal Function of ICs 14.1 IC901 (LC8A524A5N28):System ControlFL Drive 15 Block Diagram 16 Replacement Parts List 17 Cabinet Parts Location 18 Packaging Service Manu

4、al TOP NEXT AD0002043C2 Tuner/Amplifier SA-EH560 Colour (S).Silver Type Areas (E).Europe. (EB).Great Britain. (EG).Germany, Italy, France, Netherlands and Denmark. RadioFans.CN 收音机爱 好者资料库 2000 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthorized copying and distribution is a vi

5、olation of law. RadioFans.CN 收音机爱 好者资料库 Table Of Contents COVER 1 Before Repairs 2 Protection Circuitry 3 Accessories 4 Caution for AC Main Leads 5 Location of Controls 6 Operation Checks and Component ReplacementProcedures 6.1 Checking for the AC IN P.C.B. 6.2 Checking for the operation P.C.B. 6.3

6、Checking for the main P.C.B. 6.4 Replacement for the regulator transistor 6.5 Replacement for the power IC 7 To Supply Power Source 8 Self-Diagnostic Mode 8.1 To display the malfunction code 8.2 To return to the normal display 8.3 Display contents 8.3.1 U70 CD, U70 DECK(displayed automatically) 8.3.

7、2 F61 RadioFans.CN 收音机爱 好者资料库 9 Schematic Diagram Notes 10 Schematic Diagram 11 Printed Circuit Board Diagram 12 Type Illustration of ICs, Transistors and Diodes 13 Wiring Connection Diagram 14 Terminal Function of ICs 14.1 IC901 (LC8A524A5N28):System Control/FL Drive 15 Block Diagram 16 Replacement

8、 Parts List 17 Cabinet Parts Location 18 Packaging Service Manual TOP NEXT AD0002043C2 Tuner/Amplifier SA-EH560 Colour (S).Silver Type Areas (E).Europe. (EB).Great Britain. (EG).Germany, Italy, France, Netherlands and Denmark. 2000 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauth

9、orized copying and distribution is a violation of law. 1 Before Repairs TOP PREVIOUS NEXT 1. Turn off the power supply. Using a 10, 10 W resistor, connect both ends of power supply capacitors (C701, C703 and C702, C704) in order to discharge the voltage. 2. Before turning the power supply on, after

10、completion of repair, slowly apply the primary voltage by using a power supply voltage controller to make sure that the consumed current at 50 Hz in NO SIGNAL mode should be shown below with respectto supply voltage 230/240 V. Power supply voltageAC 230 V AC 240 V Consumed current 50 Hz70 250 mA TOP

11、 PREVIOUS NEXT 2 Protection Circuitry TOP PREVIOUS NEXT The protection circuitry may have operated if either of the following conditions is noticed: No sound is heard when the power is switched ON. Sound stops during a performance. The functions of this circuitry is to prevent circuitry damage if, f

12、or example, the positive and negative speaker connection wires are shorted, or if speaker system with an impedance less than the indicated rated impedance of this unit are used. If this occurs, follow the procedure outlined below. 1. Switch OFF the power. 2. Determine the cause of the problem and co

13、rrect it. 3. Switch ON the power once again. Note: When the protection circuitry functions, the unit will not operate unless the power is first switched OFF and then ON again. TOP PREVIOUS NEXT 3 Accessories TOP PREVIOUS NEXT AC power supply cord for (E),(EG) areas/(RJA0019-X).1 pc. AC power supply

14、cord for (EB) area/(RJA0053-2X).1 pc. AM loop antenna set/(RSA0022-J).1 pc. FM indoor antenna/(RSA0007).1 pc. Speaker cords/(REE0499).2 pcs./(REE0984).2 pcs./ (REE0985).2 pcs. Remote control transmitter/(RAK-EHA29WH).1 pc. Remote control batteries/(R6/LR6,“AA”, UM-3).2 pcs. Note: These are available

15、 on sales route. Antenna plug adaptor for (EB) area only/(SJP9009).1 pc. TOP PREVIOUS NEXT 4 Caution for AC Main Leads TOP PREVIOUS NEXT 5 Location of Controls TOP PREVIOUS NEXT TOP PREVIOUS NEXT 6 Operation Checks and Component Replacement/Procedures TOP PREVIOUS NEXT This section describes procedu

16、res for checking the operation of the major printed circuit boards and replacing the main components. For reassembly after operation checks or replacement, reverse the respective procedures. Special reassembly procedures are described only when required. / 6.1 Checking for the AC IN P.C.B. 6.2 Check

17、ing for the operation P.C.B. 6.3 Checking for the main P.C.B. 6.4 Replacement for the regulator transistor 6.5 Replacement for the power IC TOP PREVIOUS NEXT 6.1 Checking for the AC IN P.C.B. TOP PREVIOUS NEXT Check the AC IN P.C.B. as shown below. TOP PREVIOUS NEXT 6.2 Checking for the operation P.

18、C.B. TOP PREVIOUS NEXT Follow the (Step 1) - (Step 3) of item 6.1. Check the operation P.C.B. as shown below. TOP PREVIOUS NEXT 6.3 Checking for the main P.C.B. TOP PREVIOUS NEXT Follow the (Step 1) - (Step 3) of item 6.1. Follow the (Step 1) - (Step 6) of item 6.2. Check the main P.C.B. as shown be

19、low. TOP PREVIOUS NEXT 6.4 Replacement for the regulator transistor TOP PREVIOUS NEXT Follow the (Step 1) - (Step 3) of item 6.1. TOP PREVIOUS NEXT 6.5 Replacement for the power IC TOP PREVIOUS NEXT Follow the (Step 1) - (Step 3) of item 6.1. Follow the (Step 1) - (Step 6) of item 6.2. Follow the (S

20、tep 1) - (Step 10) of item 6.3. TOP PREVIOUS NEXT 7 To Supply Power Source TOP PREVIOUS NEXT This unit SA-EH560 is designed to operate on power supplied form system connected./For system connection, refer to Fig. 7-1. Fig. 7-1. When the unit SA-EH560 has to test and service alone, use the following

21、method to supply power source. 1. Short the section between W902A Pin 3 and C740 (-) (GND). (Refer to Fig. 7-2. ) 2. Connect this unit to an AC power supply cord./(This unit come to stand-by mode.) 3. Turn the unit ON. Fig. 7-2. Notes: Use only this method when checking the voltage etc./In case of c

22、hecking the operations, use the system connections to supply power source. TOP PREVIOUS NEXT 8 Self-Diagnostic Mode TOP PREVIOUS NEXT This unit is equipped with a self-diagnostic function which, in the event of a malfunction, automatically displays a code indicating the nature of the malfunction. Us

23、e this self-diagnostic function when servicing the unit. 8.1 To display the malfunction code 8.2 To return to the normal display 8.3 Display contents 8.3.1 U70 CD, U70 DECK(displayed automatically) 8.3.2 F61 TOP PREVIOUS NEXT 8.1 To display the malfunction code TOP PREVIOUS NEXT U70 CD:/U70 DECK: Au

24、tomatically displays on the tuner/amplifier when a malfunction occurs. Refer to Fig. 8-1. F61: Automatically displays on the tuner/amplifier when a malfunction occurs. Refer to Fig. 8-1. Fig. 8-1. 8.2 To return to the normal display TOP PREVIOUS NEXT 1. For U70 CD/U70 DECK 2. Press an any operation

25、button on the tuner/amplifier. 3. To re-display the code, switch the power off (POWER STANDBY button), and then switch power back on again 4. For F61 5. If F61 is displayed, the power will automatically be switched off and the standby indicator will light up. 6. F61 will be displayed for 3 seconds,

26、and then the clock will be displayed. 7. To re-display the code, switch the power on. F61 will be re-displayed, and then after 3 seconds the clock will be displayed and the power will automatically switch off. TOP PREVIOUS NEXT 8.3 Display contents TOP PREVIOUS NEXT 8.3.1 U70 CD, U70 DECK(displayed

27、automatically) 8.3.2 F61 TOP PREVIOUS NEXT 8.3.1 U70 CD, U70 DECK/(displayed automatically) TOP PREVIOUS NEXT Problem or condition A bus-line communications error has occurred as a result of the flat cables being inserted incorrectly, thus preventing the system from operating. 1. If U70 is displayed

28、 on the tuner/amplifier, the tape deck or CD Player cannot be operated by remote control. Correction Procedure 1. To check for correct insertion of flat cables. 2. Insert each connector until you hear a click. 3. Insert the flat cables at the back of the unit in the order indicated. Refer to Fig. 8-

29、2. Make sure the white side of the cable is on your right side. Refer to Fig. 8-3. Fig. 8-2. Fig. 8-3. 4. Breakage of flat cable. (Check and replace.) 5. If the problem is not corrected by items 1 and 2 above, this indicates a faulty IC. SA-EH560: IC901 (LC8A524A5N28) SL-EH560: IC451 (M38504M6200F)

30、RS-EH760: IC701 (M38503M2400F) Check these ICs and replace. TOP PREVIOUS NEXT 8.3.2 F61 TOP PREVIOUS NEXT Problem or condition When the power switch is switched on, it automatically switches back off, making it impossible to switch power on. Correction procedure Faulty Tuner/Amplifier (SA-EH560) out

31、put IC (IC601). (When a DC voltage is applied to speaker terminals.) TOP PREVIOUS NEXT 9 Schematic Diagram Notes TOP PREVIOUS NEXT This schematic diagram may be modified at any time with the development of new technology. Notes: S901: Power Standby/on switch ( /I) S902: ECO mode switch (MODE) S903:

32、Clock/timer, demo switch/(CLOCK/TIMER, DEMO) S904: Play timer/record timer switch/( PLAY/ REC) S905: FM mode switch (FM AUTO/MONO) S906: Tuning mode switch (TUNING MODE) S907: Set switch (SET) S908: Source input switch (INPUT SELECTOR) S910: Tuning down switch (TUNING, ) S911: Tuning up switch (TUNI

33、NG, ) S912: Tuner/band switch (TUNER/BAND) S913: Super woofer switch (S.WOOFER) S914: RDS display mode PS switch/(RDS DISP MODE-PS)/ For (E),(EG) areas S915: RDS display mode PTY switch/(RDS DISP MODE-PTY)/ For (E),(EG) areas VR901: Volume control VR (VOLUME) Indicated voltage values are the standar

34、d values for the unit measured by the DC electronic circuit tester (high-impedance) with the chassis taken as standard. Therefore, there may exist some errors in the voltage values, depending on theinternal impedance of the DC circuit tester. No mark : Power ON (FM or AM) Important safety notice: Co

35、mponents identified by mark have special characteristics important for safety. Furthermore, special parts which have purposes of fire-retardant (resistors), high-quality sound (capacitors), low-noise (resistors), etc. are used. When replacing any of components, be sure to use only manufacturers spec

36、ified parts shown in the parts list. Caution! IC and LSI are sensitive to static electricity. Secondary trouble can be prevented by taking care during repair. Cover the parts boxes made of plastics with aluminum foil. Ground the soldering iron. Put a conductive mat on the work table. Do not touch th

37、e legs of IC or LSI with the fingers directly. Voltage and signal line : Positive voltage line : Negative voltage line : FM signal line : FM OSC signal line : AM signal line : AM OSC signal line : Source signal line : Low sp. drive signal line TOP PREVIOUS NEXT 10 Schematic Diagram TOP PREVIOUS NEXT

38、 TOP PREVIOUS NEXT 11 Printed Circuit Board Diagram TOP PREVIOUS NEXT TOP PREVIOUS NEXT 12 Type Illustration of ICs, Transistors and Diodes TOP PREVIOUS NEXT TOP PREVIOUS NEXT 13 Wiring Connection Diagram TOP PREVIOUS NEXT TOP PREVIOUS NEXT 14 Terminal Function of ICs TOP PREVIOUS NEXT 14.1 IC901 (L

39、C8A524A5N28):System Control/FL Drive TOP PREVIOUS NEXT 14.1 IC901 (LC8A524A5N28):/System Control/FL Drive TOP PREVIOUS NEXT Pin No.Terminal NameI/OFunction 1CHECKOClock check signal output 2LC72 DIOPLL data signal output 3LC72 CEOChip enable signal output 4LC72 DO/STIIF count data/stereo detect sign

40、al input 5LC72 CKOClock signal output 6RL1-Not used, open 7RL2 8ST/AV.6CH-Not used, open 9SEL TUNER-Tuner select signal output (Not used, open) 10SEL/ TUNEROTuner select signal output 11AC INIPower failure detect signal input 12RESETIReset signal input 13X INIOscillator connected terminal (32.7 kHz)

41、 14X OUTO 15VSS-GND terminal 16XC INIOscillator connected terminal (6 MHz) 17XC OUTO 18VDD1IPower supply terminal 19KEY TUIOperation key signal input 20KEY KARAOKEIOperation key signal input 21SH REQIRequest signal input from Sound Processor 22NC(GND)-Not used, connected to GND 23VR JOGBIVolume cont

42、rol signal input 24VR JOGA 25MIC DETIMicrophone connecting detect signal input (Connected to VDD via resistor) 26HP SWIHeadphone connecting detect signal input 27RDS CLKIRDS clock signal input 28RDS DATAIRDS data signal input 29REMOCONIRemote control signal input 30NC-Not used, open 31 | 37 7G | 1G

43、OGrid signal output 38NC-Not used, open 39 40 | 45 P1 | P6 OSegment signal output 46VDD3IPower supply terminal 47 | 50 P7 | P10 OSegment signal output 51-VPIPower supply terminal (negative) 52 | 71 P11 | P30 OSegment signal output 72VDD4IPower supply terminal 73 | 77 P31 | P35 OSegment signal output

44、 78REG IN0IArea select signal input 79REG IN1 80STANDBYOLED (STANDBY) drive signal output 81TIMEROLED (TIMER) drive signal output 82S.W LEDOLED (S.WOOFER) drive signal output 83LOUNGE-LED (LOUNGE) drive signal output (Not used, open) 84CHORUS-LED (CHORUS) drive signal output (Not used, open) 85MUTEO

45、Muting signal output 86POWEROPower control signal output 87/ECOOECO signal output 88MUTE2OMuting signal output 89VSS2-GND terminal 90VDD2IPower supply terminal 91NC-Not used, open 92 93RL4-Not used, open 94SH CSOChip select signal output for Sound Processor 95SH DOOSerial communication signal to Sou

46、nd Processor (Data signal output) 96SH DIISerial communication signal to Sound Processor (Data signal input) 97SH CKISerial communication signal to Sound Processor (Clock signal input) 98E DETIUnusual condition detect signal input 99CR TIMERI/O TIME CONSTANT terminal 100SDIStation detector signal in

47、put from tuner circuit TOP PREVIOUS NEXT 15 Block Diagram TOP PREVIOUS NEXT TOP PREVIOUS NEXT 16 Replacement Parts List TOP PREVIOUS NEXT Notes: Important safety notice: Components identified by mark have special characteristics important for safety. Furthermore, special parts which have purposes of fire-retardant (resistors), high-quality sound (capacitors), low-noise (resistors), etc. are used. When replacing any of components, be sure to use only manufactures specified parts shown in the parts list. The marks in Remarks indicate language of instruction manual. : Spanis