Technics-SAEH560-rec-sm 维修电路原理图.pdf

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 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) 8.3.2 F61 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 Parts List 17 Cabinet Parts Location 18 Packaging Service ManualTOP NEXT AD0002043C2Tuner/AmplifierSA-EH560Colour(S).Silver TypeAreas(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 violation of law.RadioFans.CN 收音机爱 好者资料库Table Of ContentsCOVER 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 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) 8.3.2 F61 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 Parts List 17 Cabinet Parts Location 18 Packaging Service ManualTOP NEXT AD0002043C2Tuner/AmplifierSA-EH560Colour(S).Silver TypeAreas(E).Europe.(EB).Great Britain.(EG).Germany, Italy, France, Netherlands and Denmark. 2000 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.1 Before RepairsTOP 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 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 VConsumed current 50 Hz70 250 mATOP PREVIOUS NEXT 2 Protection CircuitryTOP 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, for 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 correct 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 AccessoriesTOP PREVIOUS NEXT AC power supply cord for (E),(EG) areas/(RJA0019-X).1 pc.AC power supply 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 on sales route.Antenna plug adaptor for (EB) area only/(SJP9009).1 pc.TOP PREVIOUS NEXT 4 Caution for AC Main LeadsTOP PREVIOUS NEXT 5 Location of ControlsTOP PREVIOUS NEXT TOP PREVIOUS NEXT 6 Operation Checks and Component Replacement/ProceduresTOP PREVIOUS NEXT This section describes procedures 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 Checking 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.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 below. TOP PREVIOUS NEXT 6.4 Replacement for the regulator transistorTOP PREVIOUS NEXT Follow the (Step 1) - (Step 3) of item 6.1.TOP PREVIOUS NEXT 6.5 Replacement for the power ICTOP PREVIOUS NEXT Follow the (Step 1) - (Step 3) of item 6.1.Follow the (Step 1) - (Step 6) of item 6.2.Follow the (Step 1) - (Step 10) of item 6.3.TOP PREVIOUS NEXT 7 To Supply Power SourceTOP 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 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 checking the operations, use the system connections to supply power source. TOP PREVIOUS NEXT 8 Self-Diagnostic ModeTOP 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.Use 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 codeTOP PREVIOUS NEXT U70 CD:/U70 DECK: Automatically 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 displayTOP PREVIOUS NEXT 1. For U70 CD/U70 DECK 2. Press an any operation button on the tuner/amplifier.3. To re-display the code, switch the power off (POWER STANDBY button), and then switch power back on again4. 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, 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 contentsTOP PREVIOUS NEXT 8.3.1 U70 CD, U70 DECK(displayed 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 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. 8-2. 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)RS-EH760: IC701 (M38503M2400F)Check these ICs and replace.TOP PREVIOUS NEXT 8.3.2 F61TOP 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) output IC (IC601). (When a DC voltage is applied to speaker terminals.)TOP PREVIOUS NEXT 9 Schematic Diagram NotesTOP 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: 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 (TUNING,)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 standard 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: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 manufacturers specified 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 the 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 lineTOP PREVIOUS NEXT 10 Schematic DiagramTOP PREVIOUS NEXT TOP PREVIOUS NEXT 11 Printed Circuit Board DiagramTOP PREVIOUS NEXT TOP PREVIOUS NEXT 12 Type Illustration of ICs, Transistors and DiodesTOP PREVIOUS NEXT TOP PREVIOUS NEXT 13 Wiring Connection DiagramTOP PREVIOUS NEXT TOP PREVIOUS NEXT 14 Terminal Function of ICsTOP PREVIOUS NEXT 14.1 IC901 (LC8A524A5N28):System Control/FL Drive TOP PREVIOUS NEXT 14.1 IC901 (LC8A524A5N28):/System Control/FL DriveTOP PREVIOUS NEXT Pin No.Terminal NameI/OFunction1CHECKOClock check signal output2LC72 DIOPLL data signal output3LC72 CEOChip enable signal output4LC72 DO/STIIF count data/stereo detect signal input5LC72 CKOClock signal output6RL1-Not used, open7RL28ST/AV.6CH-Not used, open9SEL TUNER-Tuner select signal output(Not used, open)10SEL/ TUNEROTuner select signal output11AC INIPower failure detect signal input12RESETIReset signal input13X INIOscillator connected terminal (32.7 kHz)14X OUTO15VSS-GND terminal16XC INIOscillator connected terminal (6 MHz)17XC OUTO18VDD1IPower supply terminal19KEY TUIOperation key signal input20KEY KARAOKEIOperation key signal input21SH REQIRequest signal input from Sound Processor22NC(GND)-Not used, connected to GND23VR JOGBIVolume control signal input24VR JOGA25MIC DETIMicrophone connecting detect signal input(Connected to VDD via resistor)26HP SWIHeadphone connecting detect signal input27RDS CLKIRDS clock signal input28RDS DATAIRDS data signal input29REMOCONIRemote control signal input30NC-Not used, open31|377G|1GOGrid signal output38NC-Not used, open3940|45P1|P6OSegment signal output46VDD3IPower supply terminal47|50P7|P10OSegment signal output51-VPIPower supply terminal (negative)52|71P11|P30OSegment signal output72VDD4IPower supply terminal73|77P31|P35OSegment signal output78REG IN0IArea select signal input79REG IN180STANDBYOLED (STANDBY) drive signal output81TIMEROLED (TIMER) drive signal output82S.W LEDOLED (S.WOOFER) drive signal output83LOUNGE-LED (LOUNGE) drive signal output(Not used, open)84CHORUS-LED (CHORUS) drive signal output(Not used, open)85MUTEOMuting signal output86POWEROPower control signal output87/ECOOECO signal output88MUTE2OMuting signal output89VSS2-GND terminal90VDD2IPower supply terminal91NC-Not used, open9293RL4-Not used, open94SH CSOChip select signal output for Sound Processor95SH DOOSerial communication signal to Sound 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 input99CR TIMERI/O TIME CONSTANT terminal100SDIStation detector signal input from tuner circuitTOP PREVIOUS NEXT 15 Block DiagramTOP PREVIOUS NEXT TOP PREVIOUS NEXT 16 Replacement Parts ListTOP 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.: Spanish, Swedish: English: German, French, Italian: Netherlands, DanishThe parenthesized indications in the Remarks columns specify the areas. (Refer to the cover page for area.)The marking RTL indicates that Retention Time is Limited for this item. After the discontinuation of this assembly in production, the item will continue to be available for a specific period of time. The retention period of availabilityis dependent on the type of assembly, and in accordance with the laws governing part and product retention. After the end of this period, the assembly will no longer be available.All parts are supplied by MESA.Ref. No.Part No.Part Name& DescriptionPcsRemarks1 RKM0395C-SCABINET12RHD30007-SSCREW43XTBS3+10JFZ1SCREW14 REX0967WIRE ASSY15 RMZ0339ZENNER COVER16 RGW0343-SKNOB,VOLUME17 RHN90001NUT18 RKA0106-NFOOT RING49 RKF0606A-KBACK GRILL110 RKW0581-1VFL WINDOW111 RMN0427CABLE HOLDER1