Denon-AVR2800-avr-sm维修电路原理图.pdf

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1、2AVR-2802/982SPECIFICATIONS? ? ? ? ? AUDIO SECTION? ? ? ? ? Power AmplifierRated output:Front:90W + 90W (8/ohms, 20Hz 20kHz with 0.05% T.H.D.)135W + 135W (6/ohms, 1kHz with 0.7% T.H.D.)150W + 150W (6/ohms, EIAJ)Center:90W (8/ohms, 20Hz 20kHz with 0.05% T.H.D.)135W (6/ohms, 1kHz with 0.7% T.H.D.)150W

2、 (6/ohms, EIAJ)Surround:90W + 90W (8/ohms, 20Hz 20kHz with 0.05% T.H.D.)135W + 135W (6/ohms, 1kHz with 0.7% T.H.D.)150W + 150W (6/ohms, EIAJ)Surround Back: 90W (8/ohms, 20 Hz 20kHz with 0.05% T.H.D.)135W (6/ohms, 1kHz with 0.7% T.H.D.)150W (6/ohms, EIAJ)Dynamic power:120W 2ch (8/ohms)170W 2ch (4/ohm

3、s)200W 2ch (2/ohms)Output terminals:Front:A or B 6 16/ohmsA + B 8 16/ohmsCenter, Surround, Surr.Back: 6 16/ohms? ? ? ? ? AnalogInput sensitivity/input impedance:200mV/47k/kohmsFrequency response:10Hz 100kHz: +0, 3dB (DIRECT mode)S/N:102dB (DIRECT mode)Distortion:0.005% (20Hz 20kHz) (DIRECT mode)Rate

4、d output:1.2V? ? ? ? ? DigitalD/A output:Rated output 2V (at 0dB playback)Total harmonic distortion 0.008% (1 kHz, at 0 dB)S/N ratio 102dBDynamic range 96dBDigital input:Format Digital audio interface? ? ? ? ? Phono equalizer (PHONO input REC OUT)Input sensitivity:2.5mVRIAA deviation:1dB (20Hz to 20

5、kHz)Signal-to-noise ratio:74dB (A weighting, with 5mV input)Rated output/Maximum output:150mV/7VDistortion factor:0.03% (1kHz, 3V)? ? ? ? ? VIDEO SECTION? ? ? ? ? Standard video jacksInput/output level and impedance:1Vp-p, 75/ohmsFrequency response:5Hz 10MHz +0, 3dB? ? ? ? ? S-video jacksInput/outpu

6、t level and impedance:Y (brightness) signal 1Vp-p, 75/ohmsC (color) signal 0.286Vp-p, 75/ohmsFrequency response:5Hz 10MHz +0, 3dB? ? ? ? ? Color component video jacksInput/output level and impedance:Y (brightness) signal 1Vp-p, 75/ohmsPB/CB (blue) signal 0.7Vp-p, 75/ohmsPR/CR (red) signal 0.7Vp-p, 7

7、5/ohmsFrequency response:5Hz 27MHz +0, 3dB? ? ? ? ? TUNER SECTIONFM (note: V at 75/ohms, 0dBf=1 10-15 W)AMReceiving Range:87.50MHz 107.90MHz520kHz 1710kHz(for U.S.A., Canada and multiple voltage models)(for U.S.A., Canada and Multiple voltage models)87.50MHz 108.00MHz522kHz 1611kHz(for Europe, Asia,

8、 China, Hong Kong, Taiwan R.O.C. and Multiple voltage models)(for Europe, Asia, China, Hong Kong, Taiwan R.O.C. and multiple voltage models)Usable Sensitivity:1.0V (11.2dBf)18V50dB Quieting Sensitivity:MONO: 1.6V (15.3dBf)STEREO: 23V (38.5dBf)S/N (IHF-A):MONO: 77dBSTEREO: 72dBTotal Harmonic Distorti

9、on (at 1kHz):MONO: 0.15%STEREO: 0.3%? ? ? ? ? GENERALPower supply:AC120V, 60Hz (for U.S.A., Canada and Taiwan R.O.C. models)AC230V, 50Hz (for Europe model)AC220V, 50Hz (for China model)AC115V/230V, 50/60Hz (for Asia, Hong Kong and Multiple voltage models)Power consumption:5.0A (for U.S.A.& Canada mo

10、del)270W (for Europe, Asia, China, Hong Kong and Multiple voltage models)650W (for Taiwan R.O.C. model)2.0W Max (Standby)Maximum external dimensions:434 (W) 171 (H) 416 (D)mm (17-3/32 6-11/32 16-3/8)Weight:11.5kg (25 lbs 6 oz)? ? ? ? ? REMOTE CONTROL UNIT(RC-903: for U.S.A., Canada, Asia, China, Hon

11、g Kong, Taiwan R.O.C. and Multiple voltage models)(RC-904: for Europe model)Batteries:R6P/AA Type (three batteries)External dimensions:70 (W) 215 (H) 24 (D)mm (2-3/4 8-15/32 15/16)Weight:200g (Approx. 7 oz) (including batteries)* For purposes of improvement, specifications and design are subject to

12、change without notice.SAFETY PRECAUTIONSThe following check should be performed for the continued protection of the customer and service technician.LEAKAGE CURRENT CHECKBefore returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassisresistance

13、 check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of thepower cord is less than 460 kohms, the unit is defective.RadioFans.CN 收音机爱 好者资料库3AVR-2802/982WIRE ARRANGEMENTIf wire bundles are untied or moved to perform adjustment or parts replacement etc

14、.,be sure to rearrange them neatly as theywere originally bundled or placed afterward.Otherwise, incorrect arrangement can be a cause of noise generation.Wire arrangement viewed from the topRadioFans.CN 收音机爱 好者资料库4AVR-2802/982DISASSEMBLY(Follow the procedure below in reverse order when reassembling)

15、1. Top CoverRemove 3 screws 1 on the rear and 6 screws 2 on bothsides to detach the Top Cover as shown in the arrowdirection.2. Front Panel(1) Remove 7 screws 3 from the top and bottom edges ofthe Front Panel.(2) Release 4 top and bottom hooks, then detach the FrontPanel as shown in the arrow direct

16、ion.Top Cover3. Inner PanelPull out the Inner Panel in the arrow direction after removing3 screws 4.Inner PanelHook221333HookHookHookFront Panel445AVR-2802/9824. Inner Panel Assy(1) Remove 3 round and 1 square knobs, and unscrew 4nuts.(2)Remove 15 screws 5 fixing each P.W.B.Round Knob555NutSquare Kn

17、obRound KnobNut5. Amp Connect Unit(1) Remove 3 screw to detach Pre-out Unit .(2) Take off the Amp Connect Unit as shown in thearrow direction after removing 1 screw .6789? ?6. Regulator UnitTake off the Regulator Unit as shown in the arrowdirection after removing 9 screws .? ?6789? ? ?6AVR-2802/9827

18、. Component-Video/S-Video / C-video /Audio & DSP / Ext-in VR / Digital-in / AMFM Tuner Unit(1) Remove 44 screws to detach the Rear Panel.(2) Take off the objective P.W.B. upward.? ?8. How to Check Power / Control Unit withPower-on(1) Remove 13 screws ,and 4 screws fixing to theChassis.(2) Pull up th

19、e Unit to separate from the Chassis.? ? ? ? ?Rear Panel? ? ? ? ? ? ? ? ? ?AVR-2802/9827CLOCK FLOW & WAVE FORM IN DIGITAL BLOCKWave FormCH1: D-DATA(IC505 (5) )1CH1: DATACH2: fsCH3: 64fsCH4: 256fs3CH1: DATACH2: DA-LRCK(fs)CH3: DA-SCK(64fs)2AVR-2802/9828A/D SELECTORIC80474LVX157CODECD/A CONVERTERIC801A

20、D1854(2)256fs(26)64fs(25)fs(27)DATAINPUTSELECTORIC505151NSCOAXIAL(15)OPTICAL-1OPTICAL-2OPTICAL-3(14)(5)(13)OPTICALOUTPUT(12)IC506151NS(3)(5)(2)(1)IC800LC89055WCKOUT(13)(5)DIN2BCKDATA(14)LRCK(15)(16)XIN(22)XMCK(20)12.288MHzX801MCLK(44)(22)(25)(26)SCLKN1LRCKN1SDATAN1AUDATA0(41)AUDATA1(40)AUDATA2(39)(3

21、0)CLKINIC814CS493292DSP21(27)(43)(42)SCLKLRCLKCMPDAT3MCLKDA SCKDA LRCKSD IN256fs64fsfsFRONTSURROUND256fs64fsfsDATAIC813(7)(13)(10)SN74LV4040APWDIR(6)SDTI1IC602AK4527(7)SDTI2(8)SDTI3(39)MCLK(4)BICK(5)LRCK(9)SDTOXMT958 (3)SURROUND BACKCENTER/SWSN74HCSN74HC* fs is a sampling frequency of input digital

22、signal.e.g.:sampling frequency 48kHz fs=48kHz* 64fs and 256fs are 64 or 256 times the sampling frequency respectively.e.g.: sampling frequency 48kHz64fs: 48kHz x 64=3.072MHz256fs: 48kHz x 256=12.288MHz* The sampling frequency for analog input is fixed to 48kHz internally.* (No.) indicates the pin nu

23、mber of individual.* The arrow indicates the direction of signal as the input terminal pointed by the arrow and the output terminal by the opposite.Clock Flow87654321ABCDEBLOCK DIAGRAMAVR-2802/982987654321ABCDELEVEL DIAGRAMS (1/3)AVR-2802/9821087654321ABCDELEVEL DIAGRAMS (2/3)AVR-2802/9821187654321A

24、BCDELEVEL DIAGRAMS (3/3)AVR-2802/98212AVR-2802/98213CAUTION IN SERVICING? ? ? ? ? Initializing AV SURROUND RECEIVERAV SURROUND RECEIVER initialization should be performed when the com, peripheral parts of com, and DSPP.W.B. are replaced.1. Switch off the unit and remove the AC cord from thewall outl

25、et.2. Hold the following A button and B button, and plugthe AC cord into the outlet.3. Check that the entire display is flashing with aninterval of about 1 second, and release your fingersfrom the 2 buttons and the microprocessor will beinitialized.Note: ? If step 3 does not work, start over from st

26、ep 1.? All user settings will be lost and its factory setting will be recovered when this initialization mode.So make sure to memorize your setting for restoring after the initialization.2VOLUME LEVELAUTOLOCKSTAND BYDIGITALPCMSIGNALDIGITALINPUTREMOTESENSOR14AVR-2802/982ADJUSTMENTIdling Current (1U-3

27、368-1)Required measurement equipment : DC VoltmeterPreparation(1)Avoid direct blow from an air conditioner or an electric fan, and adjust the unit at normal room tempereture 15 C 30 C(59 F 86 F).(2)Presetting? POWER (Power sourse switch)OFF? SPEAKER (Speaker terminal)No load (Do not connect speaker,

28、 dummy resistor, etc.)Adjustment(1) Remove top cover and set VR101, VR102, VR201, VR202, VR301, VR401, on 1U-3368-1 (Power Unit) at fullycounterclockwise ( ).(2)Connect DC Voltmeter to test points (FRONT-Lch: TP101, FRONT-Rch: TP102, CENTER ch: TP103, SURROUND-Lch:TP101, SURROUND-Rch: TP103, SURROUN

29、D BACK-ch: TP102).(3)Connect power cord to AC Line, and turn power switch ON.(4)Presetting.MASTER VOLUME : - counterclockwise ( min.)MODE: 6CH STEREOFUNCTION: CD(5)Allow 2 minutes, and turn VR101 clockwise ( ) to adjust the TEST POINT voltage to 6.5 mV 0.5 mV DC.(6)After 10 minutes from preset, turn

30、 VR101 to set the voltage to 8 mV 0.5 mV DC.(7)Adjust the Variable Resistors of other channels in the same way.(8)After 5 minutes from (6), turn VR101 to set the voltage to 8 mV 0.5 mV DC.(9)Adjust the Variable Resistors of other channels in the same way.TP102VR301VR102VR401VR202VR101VR201SRchSBchFR

31、chCchFLchSLchDC VoltmeterTP103TP10115AVR-2802/982NameFunctionTMP88CU74F Terminal FunctionPinNo.1P02/S01RDS RESETOCZLRDS reset output (LC72720)2P03OSD RSTOCZHOSD control output (M35015)3P04PLL DATAIPLL Serial data input terminal (LC72131)4P05PLFLRDS DATAOCZLPLL, FL, RDS control terminal (LC72131 & LC

32、75721, LC72720)5P06PLL STBOCZLPLL control terminal (LC72131)6P07PLFLRDS CLKOCZLPLL, FL, RDS control terminal (LC72131 & LC75721, LC72720)7VssVssIGNDLGND8XoutXoutOXTAL9XinXinIXTAL10RESET_RESET_IEuLvLReset input11P22/XTOUT TUNED_IEuLvZTuning detect, L: Tuned12P21/XTINSTEREO_IEuLvZL: At stereo receive1

33、3TESTTESTIGNDSConnect to GND14P20/INT5_B.DOWN_IEuLvZPower down detect, L: Power down15P10/INT0_PROTECT_IEdE&LZPROTECTION detect input, H: Detect16P11/INT1RDS DATAIZLRDS data input (LC72720)17P12OSD CLKOCZHOSD control output (M35015)18P13OSD CSOCZHOSD control output (M35015)19P14OSD DATAOCZLOSD contr

34、ol output (M35015)20P15/INT3REMOCONIEdE&LZRemote control signal input21P16/INT2ACKOCZLMAIN-SUB CPU comm. control terminal22P17/INT4REQIEuZLMAIN-SUB CPU comm. control terminal23P30/SCLSIIMAIN-SUB CPU comm. control terminal24P31/SDASOOCMAIN-SUB CPU comm. control terminal25P32/SCK0_CLKOCMAIN-SUB CPU co

35、mm. control terminal26P40/AIN0MODEIEuLvZDestination switching input27P41/AIN1KEY1IEuLvZButton input 128P42/AIN2KEY2IEuLvZButton input 229P43/AIN3KEY3IEuLvZButton input 330P44/AIN4FUNC STB1OCZLFunction control output, REC OUT (TC9274-011), EXT/SOURCE (TC9274-017)31P45/AIN5FUNC/T. CON CLKOCZLFunction

36、control output (TC9274N, TC9273), TONE control output (TC9184P)32P46/AIN6FUNC/T. CON DATAOCZLFunction control output (TC9274N, TC9273), TONE control output (TC9184P)33P47/AIN7E.VOL STB4OCZLElect. volume control output (TC9482)34P50/AIN8E.VOL STB1OCLLElect. volume control output (TC9459)35P51/AIN9TON

37、E STBOCLLTONE control output (TC9184P)36P52/AIN10E.VOL DATAOCLHElect. volume control output (TC9459, TC9482)37P53/AIN11E.VOL CLKOCLHElect. volume control output (TC9459, TC9482)SymbolI/OTypeOpDetResInitSEMICONDUCTORS? ? ? ? ? ICsNote: Abbreviation ahead of IC No. indicates the name of P.W.B.PO: Powe

38、r P.W.B.RE: Regulator P.W.B.EX: Exit in P.W.B.AU: Audio/DSP P.W.B.CO: Control P.W.B.TMP88CU74F(CO: IC303)Function38VASSVASSIRef. volt (GND)39VAREFVAREFIRef. volt (VDD)40VDDVDDIPower supply41P60FL CEOPEdSLHFL display control output (LC75721NE)42P61FL RESOPEdSLHFL display control output (LC75721NE)43P

39、62FUNC STB2OPEdZLFunction control output (TC9273), INPUT (TC9273)44P63FA-RELAYOPIdLLFront SP relay A control terminal, L: Mute45P64FB-RELAYOPIdLLFront SP relay B control terminal, L: Mute46P65C-RELAYOPIdLLCenter SP relay control terminal, L: Mute47P66S-RELAYOPIdLHSurround SP relay control terminal,

40、L: Mute48P67PRE F MUTEOPEdLHFront PRE OUT mute control terminal, L: Mute49P70PRE C MUTEOPEdLLCenter PRE OUT mute control terminal, L: Mute50P71PRE S MUTEOPEdLLSurround PRE OUT mute control terminal, L: Mute51P72SUB WOOFER MUTEOPEdLHSub-woofer PRE OUT mute control terminal, L: Mute52P73H/P RELAYOPIdL

41、HH/P OUT relay control terminal, L: Mute53P74EXP OEOPEdLHPort expander control terminal (BU4094)54P75EXP CLKOPEdLLPort expander control terminal (BU4094)55P76EXP DATAOPEdLLPort expander control terminal (BU4094)56P77EXP STBOPEdLLPort expander control terminal (BU4094)57P80POWEROPIdLHPower relay cont

42、rol output, H: ON58P81RESET2OPIdLLReset signal output to sub-CPU, H: Reset59P82PRE S.BACK MUTEOPIdLLSurround Back PRE PUT mute control terminal, L: Mute60P83S.BACK VOL MUTEOPIdLLSurround Back volume mute, L: Mute61P84STANDBYOPIdLHStandby LED drive output H: Light62P85S.BACK RELAYOPIdLLSurround Back

43、SP relay control terminal, L: Mute63P86LED CKOPIdLLLED control terminal (BU2090F)64P87LED DATAOPIdLLLED control terminal (BU2090F)65P90TUNER MUTEOPEdLHTUNER mute control terminal, L: Mute66P91MULTI MUTEOPIdLHMULTI PREOUT mute control terminal, L: Mute67P92S MONI DETIEuLvZS monitor connection detect

44、input, L: Connected68P93S SIG DETIEuLvZS signal detect input, H: Detected69P94SYNC DET.IEuLvZSync detect input, H: Ext. sync70P95SEL A (M)IEuLvZMaster volume rotation detect input (rotary encoder)71P96SEL B (M)IEuLvZMaster volume rotation detect input (rotary encoder)72P97CINEMA EQOPEuLvZLCINEMA EQ

45、control output, H: ON73PD0VOL MUTEOPEdLLMaster volume minimum control, L: Min.74PD1SEL C (S)IEuLvZSurround mode rotation detect input (rotary encoder)75PD2SEL D (S)IEuLvZSurround mode rotation detect input (rotary encoder)76PD3SEL E (F)IEuLvZInput selector switch rotation detect input (rotary encode

46、r)77PD4SEL F (F)IEuLvZInput selector switch rotation detect input (rotary encoder)78VkkVkkGND fixed79P00/SCK1_OCZL80P01/SI1RDS CEOCZLRDS data output (LC72720)I/OTypeOpDetResInitNamePinNo.Symbol124254041646580NOTE:Pin No.:Terminal number of microcomputer.Port Name:The name entered in the data sheet o

47、f microcomputer.Symbol:Symbolized interface function.I/O:Input or out of part.“I”= Input port“O”= Output portType:Composition of port in case of output port.“C”= CMOS output“N”= NMOS open drain output“P”= PMOS open drain outputOp:Pull up/Pull down selection information.“Iu”= Inner microcomputer pull

48、 up“Id”= Inner microcomputer pull down“Eu” = External microcomputer pull up“Ed” = External microcomputer pull downDet:Indicates judging state of input port. Level detection is “LV”; Edge detection is “Ed”;Detection by both shifting is “E&L”; Serial data detection is “S” (Serial data output is also “

49、S”).Res:State at reset.“H”= Outputs High Level at reset“L”= Outputs Low Level at reset“Z”= Becomes High impedance mode at resetIni:Initial output state.Function:Function and logical level explanation of signals to be interface.TMP93CS40F (AU: IC301)NameFunctionTMP93CS40F Terminal FunctionPinNo.1V RE

50、FLA/D ref. GND2A VssA/D GND3A VccAD +5V4_NMIINot used (fixed to H)5P70/TI0C15OCEdLLFixed to L (DSP ROM address cont. out bit 15, not used)6P71/TO1C16OCEdLLDSP program ROM address cont. out bit 167P72/TO2C17OCEdLLDSP program ROM address cont. out bit 178P73/TO3ROM/RAMOCEdLLROM/RAM switching control t