Technics-SHDV290-sp-sm 维修电路原理图.pdf
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1、ORDER NO.AD0303068C8Sound ProcessorSH-DV290EGColour(S) .Silver TypeSystem: SC-DV290Because of unique interconnecting cables,when a component requires servise,send or bring in the entire system.Note: Refer to the service manual for Model No.SA-DV290E/EG/EB (ORDER NO.AD0303067C2) for information on “A
2、CCESSORIES”and “PACKAGING”. SPECIFICATIONSSpecification1RadioFans.CN 收音机爱 好者资料库 EQ/SFP sectionMANUAL GEQ5-Band EQCenter frequency70/300/1 k/3.15 k/10 kHzLevel control2.0, 4.0, 6.0 dBEQ/Space mode4 modesHEAVY, CLEAR, SOFT, HALLSUPER 3D AI EQ3 modesAI EQ, SUPER 3D AI 1, SUPER 3D AI 2 Pre-amplifier sec
3、tionInput sensitivity/impedanceVCR (EXT)250 mV/15 k VDP (AUX)250 mV/15 k Output levelVCR REC OUT150 mV/1.5 k DOLBY PRO LOGIC sectionPRO LOGIC modeSURROUNDCENTER modeNORMALDELAY TIME20 ms (Fixed) AV SURROUND sectionAV surround modeSUPER SURROUND (MUSIC, MOVIE) DSP CONTROL sectionDSP control modeSUPER
4、 SOUND EQCENTER FOCUSVIRTUAL REAR SURROUNDMULTI REAR SURROUNDSEAT POSITION Spectrum analyzer sectionDisplay modeNORMAL, PEAKHOLD, AURORA GeneralDimensions (WHD)29389270 mmMass1.5 kgPower SupplyDC10V/ -25V, AC4.6VPower Consumption7WNots1.Design and specifications are subject to change without notice.
5、2.Dimensions and weight are approximate.3.Total harmonic distortion is measured by the digital spectrum analyzer. System/SC-DV290Sound processor: SH-DV290, DVD/ Video CD/ CD changer: SL-DV290, Tuner/ Amplifier: SA-DV290 , Cassette Deck: RS-DV290, Speakers: Front* (SB-DV290),Center* (SB-PC95),Surroun
6、d* (SB-PS95) (*Made in MAES.)Manufactured under license from Dolby Laboratories. / “Dolby”,”Pro Logic” and the double-D symbol are trademarks of Dolby Laboratories.2RadioFans.CN 收音机爱 好者资料库 1. Before RepairThis equipment (SH-DV290), which is the component of the system, is supplied with power from th
7、e amplifier (SA-DV290).When repairing this equipment or checking operation of the system, be sure to connect the amplifier with it.Power supply and operation check in the state of it as a single equipmenet are impracticable.2. Operating Instructions3. Operation Checks and Component Replacement Proce
8、dures- 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.3.1. Che
9、cking for the FL P.C.B.3- Check the FL P.C.B. as shown below.3.2. Checking for the main P.C.B.- Follow the (Step 1) - (Step 3) of item 3.1.4- Check the main P.C.B. as shown below.54. Wiring Connection Diagram5. Block Diagram6. To Supply Power SourceThis unit is designed to operate on power supplied
10、from system connected.When a component requires service, use the system connections to supply power source.For system connections. (Refer to Fig. 1)Fig. 17. Schematic Diagram Notes7.1. Type Illustrations of ICs, Transistors and Diodes7.2. Schematic Diagram Notes- This schematic diagram may be modifi
11、ed at any time with development of new technology.Notes:6- S601: Display mode (DISPLAY MODE) switch.- S602: DOLBY PRO LOGIC ( PRO LOGIC, OFF/ ON) switch.- S603: Super surround (SUPER SURROUND) switch .- S604: Super sound EQ (SUPER SOUND EQ) switch .- S605: Center focus (CENTER FOCUS) switch.- S606:
12、Virtual rear surround (VIRTUAL REAR SURROUND) switch.- S607: Multi rear surround (MULTI REAR SURROUND) switch. - S608: Jog control () switch. - S609: Jog control () switch. - S610: Jog control () switch. - S611: Jog control () switch. - S612: Super 3D AI EQ (SUPER 3D AI EQ) switch. - S613: Seat posi
13、tion (SEAT POSITION) switch. - S614: Joystick (MULTI JOG) switch. - 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
14、on the internalimpedanceof the DC circuit tester. / No mark: Power on Important safety notice:Components identified by mark have special characteristics impotant for safety.Furthermore, special parts which have purpose of fire-retardant (resistors), high-quality sound (capacitors), low-noise (resist
15、ors), etc. are used. When replacing any of components, be sure to use only manufactures specified parts showninthe 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 alumi
16、num 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 line7: Positive voltage line: CD Playback signal line: Negative voltage line8. Schematic Diagram9. Printed Circuit Board Diagram10. Terminal
17、 Function of ICs10.1. IC601(C2BBGF000425):System control/FL drivePin No.MarkI/O / DivisionFunction1KEY1IOperation key1 signal input terminal2KEY2IOperation key2 signal input terminal3SP INIA/D signal input terminal from IC602 4SP AOBand select signal output terminal for IC6025SP BOBand select signal
18、 output terminal for IC6026SP COBand select signal output terminal for IC6027SA CSIChip select signal input terminal8DSP RSTOReset signal output terminal for IC4019DSP CSOChip select signal output terminal for IC40110DSP SNSISense signal input terminal from IC40111DSP ACKIAcknowledge signal input te
19、rminal from IC40112DSP CKOClock signal output terminal for IC4018Pin No.MarkI/O / DivisionFunction13DSP DOOData signal output terminal for IC40114DSP DIIData signal input terminal for IC40115JOGAIJOG A signal input terminal16JOGBIJOG B signal input terminal17CNVSSIConnected to GND through resistor18
20、RESETISystem reset signal input terminal19NC-Not used, open20NC-Not used, open21VSS-GND terminal22XINICeramic oscillator input terminal (f=4MHz)23XOUTOCeramic oscillator output terminal (f=4MHz)24VCCIPower supply input terminal25NC-Not used, open26NC-Not used, open27LED CFOOORANGE LED(CENTER FOCUS)
21、signal output terminal28LED CFGOGREEN LED(CENTER FOCUS) signal output terminal29BR93 DATAIData signal input terminal from EEPROM30BR93 CS-Not used, open31BR93 CK-Not used, open32SYNCIPower failure detect signal input terminal33SA REQORequest signal output terminal for Tuner/Amplifier34SA CKOSerial c
22、ommunication signal output terminal for Tuner/Amplifier35SA DOOSerial communication signal output terminal for Tuner/Amplifier36SA DIISerial communication signal input terminal from Tuner/Amplifier9Pin No.MarkI/O / DivisionFunction37LED SSSOLED(SUPER SURROUND)signal output terminal38LED DPLOLED(DOLB
23、Y PRO LOGIC) signal output terminal39LED SPO OORANGE LED (SEAT POSITION) signal output terminal40LED SPGOGREEN LED (SEAT POSITION) signal output terminal41LED 3DOOORANGE LED (3D ENHANCED SURROUND) signal output terminal42LED 3DGOGREEN LED (3D ENHANCED SURROUND) signal output terminal43LED MROOORANGE
24、 LED (MULTI REAR SURROUND) signal output terminal44LED MRGOGREEN LED (MULTI REAR SURROUND) signal output terminal45LED VROOORANGE LED (VIRTUAL REAR SURROUND) signal output terminal46LED VRGOGREEN LED (VIRTUAL REAR SURROUND) signal output terminal47-80P1-P34OSegment signal output terminal81-Not used,
25、 open82-887G-1GOGrid signal output terminal89VEEIPower supply input terminal90CD&DECK DIIData signal input terminal (DVD and deck machanism)91CD&DECK DOOData signal output terminal (DVD and deck machanism)92CD&DECK CKIClock signal input terminal (DVD and deck machanism)93NC-Not used, open10Pin No.Ma
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