Denon-AVC1880-avr-sm维修电路原理图.pdf
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1、SERVICE MANUALMODEL AVR-1804/884 AVC-1880AV SURROUND RECEIVER / AMPLIFIER16-11, YUSHIMA 3-CHOME, BUNKYOU-KU, TOKYO 113-0034 JAPAN X0173V.01 DE/CDM 0307For U.S.A., Canada, Europe, U.K.,Asia, China,Taiwan R.O.C., Korea& Japan model前、必読。本機、火災、感電、対安全性確保配慮、法的電気用品安全法、所定許可得製造。従際、安全性維持、記載注意事項必守。本機仕様性能改良、予告変
2、更。Please use this service manual with referring to the operating instructions without fail.Some illustrations using in this service manual are slightly different from the actual set.修理際、必取扱説明書参照上、作業行。本文中使用、説明都合上現物多少異場合。補修用性能部品保有期間、製造打切後8年。注意RadioFans.CN 收音机爱 好者资料库22 2AVR1804/884 / AVC-1880AVR1804/88
3、4 / AVC-1880SAFETY 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 check. If
4、 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.(1) (2) 500V1M(1) (2) RadioFans.CN 收音机爱 好者资料库3 33AVR-1804/884 / AVC-1880AVR-1804/884 / AVC-1880LEVEL DIAGRAMSFRONT/CENTR/SURROUND/SURROUND BACKL
5、EVEL DIAGRAMSFRONT/CENTR/SURROUND/SURROUND BACK20dB10dB0dB(200mV)-10dB-20dB6CH IN40dB30dB0dB(200mV)-10dB-20dB-12dB6CH INCD IN-10dBFS-30dBFS-20dBFS6CH IN6CH INCENTERSURROUNDSURROUND BACKDSP OUT-10dBFS-20dBFS-30dBFSD/A+MUTE6dBD/A OUT100mV REFD/A-10dBFS0dBFS-20dBFS-30dBFS-23dBFSD/A OUT70.8mV REF6dB6dBD
6、/A OUT100mV REFCENTERSURR/SB6CH INCD IN0dBFSA/D+- -A/D10dB20dB30dB40dBFRONTINPUTBUFFERAMPA/D INREV AMPA/D INREV AMPA/D INREV AMPDIRDIGITALD/A OUTLPFREV AMPSW SUMREV AMP+HPFMUTEDSPD/A- - -SUM S/W+D/A0dBFSMUTE+ELECTRICVOLUMEPRE AMPTONEPOWER AMPSPK OUTFRONT2.83V(1W/8ohm)SPK OUTFRONTATTH/P OUT-18dB-15dB
7、VOL 0025.5dB15.5dBVOL 00MUTE+15.5dB-18dBH/P OUT47mV(1W 8ohm)-35.5dB25.5dBSPK OUTCENTERSURROUNDSPK OUT2.83V(1W/8ohm)4 44AVR-1804/884 / AVC-1880AVR-1804/884 / AVC-1880SUB WOORERSUB WOORER10dB10.5dB6dBConfig1 -38dBFSConfig2-28dBFSLFE-20dBFS-30dBFSLFE6dB6dBFront D/A Out200mV ref6CH IN0dBFS-10dBFSD/AOdB1
8、0dB20dB30dB-10dB-20dB-30dB-5dB(200mV)(112mV)MUTE+D/ASUB_WOOFER- - -DSP OUTD/A OUTLPFSW SUMREV AMPREV AMP6CH INPUT+MUTEELECTRICVOLUMEPRE AMPSUB WOOFERPRE OUTSUB WOOFERPRE OUT150mV-15dB21.5dBVOL 00TO FRONT CH5 55AVR-1804/884 / AVC-1880AVR-1804/884 / AVC-1880BLOCK DIAGRAMBLOCK DIAGRAMLINE_1TV/DBSLINE_2
9、LINE_3CRCBYDVD/VDPLINE_3LINE_2LINE_1CRCBYD-VIDEO INPUTJAPAN ONLYVCR2 OUTMULTI OUTEX_SREX_SLEX_FREX_FL6CH_INPUTEX_CFM ANTEX_SWAM ANTLOOP FILTERE3 ONLYMUTINGFROM u-COMFMFRONTENDIF FILTERPLL CIRCUITIF FILTERAM TUNINGIF AMPMPX ICFM & AMIF ICL.P.F-RLBUFF+HPF+-+L/R SUMDIGITALFILTERADCCODECAD1837VOLUMEVOLU
10、MEDIGITALFILTERDAC+RMC GNDINCXA1511MRMC IN/OUTC-VIDEO INPUTCOMP-VIDEOINPUTDVD/VDPTV/DBSDVD/VDPTV/DBSVIDEO SWITCHVIDEO SWITCHVIDEO SWITCHVCR-1VCR-2VCR1 OUTV.AUXINHD-VIDEO OUTPUTLINE_3LINE_2LINE_1CRCBYS-VIDEO INPUTVIDEO SWITCHVIDEO SWITCHINHDVD/VDPTV/DBSVCR-1VCR-2V.AUXVCR-1 OUTVCR-2 OUTVCR2 OUTREC_SWI
11、TCHIGANALOG INDIGITAL INCOAXIALOPTICAL_4OPTICAL_3OPTICAL_2OPTICAL_1DVD/VDPCDR/TAPETV/DBSVCR1VCR2PHONO+CDV.AUXTUNER(JAPAN ONLY)ANALOG OUTCDR/TAPE OUTVCR1 OUTDIGITAL OUTRCLK1(68)TCLK1(65)ROM512K X 8TCLK2(47)RAM64K X 1674LV244BUFFERfs64fs64fs64fsRBCK(17)DIRLC89057W-VF4DIGITAL AUDIO DECODER-SERIAL DATAI
12、/O PORTCOUTDIGITALFILTERADCFROM MICOMTC9274-011INPUT_SWITCHIGTC9273-004Lock DetectSelectorXMCKSelector&INPUTDEMODULATIONDATAfsRDATA(21)RLRCK(20)RMCK(16)256fsCCLKCLATCHCINALRCKMCLKABCLKASDATADSDATA1CLOCKCONTROL PORTVOLUMEFL/FR/C/SL/SR/SW/SBfs256fsMELODY 32PF6(41)RFS1(69)RCLK0(61)DR0(60)DR1(67)CLK_IN(
13、132)DT0(56)TCLK0(57)+VOLUMEVOLUMEVOLUMEDIGITALFILTERVOLUMEVOLUMEDIGITALFILTERDIGITALFILTER+DACDAC+DACSW F SUM-TUNER PLLDATACXP740096u-COMCONTROL DATADIGITAL AUDIOAUDIO SWITCHINGTC9164TC9482VOLUMEEX_FLDSP_FLANA_HFPANA_INFLT DRIVERDATALC75721NEFL DRIVEREX_CCENTEREX_SRSRSWEX_SWEX_SLANA_HFPANA_INDSP_FRS
14、LEX_FRREMOTE CONTIN/OUT12MHzRESONATORKEY_MATRIXTC9184TONEPOWER AMPTONE DFT CON.FL DISPLAY16-ST-42GNKSPK A+-+SPEAKER OUT+-+FRONT A LFRONT A RFRONT B L-SPK B+-SURR L+-SURR R+-FRONT B R+CENTER+BA7626BA7626YC12129154521314IC1001IC1004IC1001+5VMONITOR OUTQ653MONITOR OUTQ1014Q6561214131412133IC1004IC10083
15、.3V2.5VDSPDSPDIRBA7626IC606OSDLC7478111515S-VIDEO DETBA76262IC1001BA7626C-VIDEO DET1512IC1008NJM2509V13435Q1022IC1008IC1007C1Q1012MUTE+5.6V(Y,CB,CR SWITCHING SAME)+5.6VRMC DATAOUTKIC9459AVRRELAY B+-36VFLTM5-MTL601Y/CMIXY/CYCYQ10177805+5V (A/D POWER)FUNCTION,OP AMPTUNERVIDEO POWER+5V (DSP PART PWR)FU
16、NCTION,OP AMPCODEC79157805LOW DROP78057815MAIN -BMAIN +B+MUTE-H/P OUTSW+-+PRE OUT+-SURR BACK/MULTIFL DRIVERu-COMFILAMENT AC7805RELAY6666AVR-1804/884 / AVC-1880AVR-1804/884 / AVC-1880ADJUSTMENTADJUSTMENTTuner Section (AVR-1804/884 only)CONNECTION DIAGRAM OF MEASURING INSTRUMENTS? FMSTEREOMODULATORFM
17、SSGDigitalVoltmeter75ohmT402T403IC402VR402TUNER BDR47120+1410dB? AMT402T403IC402TUNER BDR471VR401FM ALIGNMENTInputOutputAdjustmentStepAlignmentItemTuningFrequencySettingTypeFrequencyInputLevelModulationCouplingTypeConnect toPointsAdjust to1CenterAdjustment98.1MHz(98.0MHz)FM SSG98.1MHz60dBMono1kHz 10
18、0%AntennaTerminalDigitalVoltmeterR471T402 50mV2Distortion98.1MHz(98.0MHz)FM SSG98.1MHz60dBMono1kHz 100%AntennaTerminalDistortionMeterOutputTerminal (L)T403MinimumDistortion3Repeat Steps 1 and 24Signal Level98.1MHz(98.0MHz)FM SSG98.1MHz20dBOFFAntennaTerminalLight “TUNED” onFL DisplayVR402AM ALIGNMENT
19、OutputAdjustmentStepAlignmentItemFrequencyInputTypeConnect toPointsAdjust toRemarks1Signal Level999 (1000)kHzAM SSGVR401Light “TUNED” onFL DisplaySSG OUTPUT74dB (EMF)7777AVR-1804/884 / AVC-1880AVR-1804/884 / AVC-1880Audio SectionIdling CurrentRequired measurement equipment : DC Voltmeter調整必要測定器 : 直流
20、電圧計Preparation(1)Avoid direct blow from an air conditioner or an electric fan, and adjust the unit at normal room tempereture15 C 30 C (59 F 86 F).(2)Presetting POWER (Power sourse switch)OFF SPEAKER (Speaker terminal)No load (Do not connect speaker, dummy resistor, etc.)(1)、扇風機風通良場所避、通常使用状態置。周囲温度15
21、30、湿度常湿。Adjustment(1)Remove top cover and set VR101, VR102, VR103, VR104, VR105 on Amp. Unit, VR106 on SURR.-BACK ch Amp.Unit at full counterclockwise ( ) position.(2)Connect DC Voltmeter to test points (FRONT-Lch: TP104, FRONT-Rch: TP105, CENTER ch: TP103,SURROUND-Lch: TP101, SURROUND-Rch: TP102, S
22、URROUND-BACK ch: CP106).(3)Connect power cord to AC Line, and turn power switch ON.(4)Presetting.MASTER VOLUME : - counterclockwise ( min.)MODE: 6CH STEREOFUNCTION: CD(5)Within 2 minutes after the power on, turn VR101 clockwise ( ) to adjust the TEST POINT voltage to 1.5 mV 0.5 mVDC.(6)After 10 minu
23、tes from the preset above, turn VR101 to set the voltage to 2.5 mV 0.5 mV DC.(7)Adjust the Variable Resistors of other channels in the same way.(1)上、基板VR101, VR102, VR103, VR104,VR105 及Surr. Back 基板VR106 反時計方向 () 回切状態。(2) (FRONT-Lch: TP104, FRONT-Rch: TP105, CENTER ch: TP103, SURROUND-Lch: TP101,SUR
24、ROUND-Rch: TP102, SURROUND-BACK ch: CP106) 直流電圧計接続。(3)電源AC100V (95105V 範囲可)接続、電源ON 。(4)後、次。VOLUME(音量調節)反時計方向 () 回、最小状態。SPEAKER-A(端子)無負荷(、抵抗器接続。)MODE : 6CH STEREOFUNCTION : CD(5)2分以内VR101 時計方向 () 回電圧次調整。1.5mV 0.5mV DC(6)予備調整10分後VR101 回、次電圧設定。2.5mV 0.5mV DC(7)同方法各可変抵抗調整。VR104TR104VR105TP105VR106CP106S
25、 Back chS RchVR102TP102VR103,TP103C chVR101,TP101F LchS LchF RchDC Voltmeter8888AVR-1804/884 / AVC-1880AVR-1804/884 / AVC-1880SEMICONDUCTORSSEMICONDUCTORSOnly major semiconductors are shown, general semiconductors etc. are omitted to list.主半導体記載。汎用半導体記載省略。? ? ? ? ? ICsCXP740010(IC201)PH7PH6PH5PH4PH3
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