Denon-AVC1890-avr-sm维修电路原理图.pdf
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1、SERVICE MANUALMODEL AVR-2105/885 AVC-1890AV SURROUND RECEIVER / AMPLIFIERTokyo, Japan X0206V.01 DE/CDM 0407For 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、予告変更。Please use this service manual with referr
2、ing 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For purposes of improvement, specifications anddesign are subject to change without notice.RadioFans.CN
3、 收音机爱 好者资料库2AVR2105/885 / AVC-1890SAFETY 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 chass
4、isresistance 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.(1) (2) 500V1M(1) (2) RadioFans.CN 收音机爱 好者资料库3AVR-2105/885 / AVC-1890LEVEL DIAGRAMSFRONT/CENTR/SURROUND/SURROUND BACK+DIRD
5、SPD/AD/AD/A6dBMUTE- -+D/AHPFMUTE+0dB6CH IN10dB20dB30dB40dB6CH IN0dB10dB20dB30dB40dB6CH INCD IN-12dB- -30dBFS-10dBFS0dBFSA/DA/D-30dBFS-23dBFS-20dBFS-10dBFS0dBFS-30dBFS-20dBFS-10dBFS0dBFS+- -15dB15.5dB15.5dBMUTE25.5dB25.5dB-35.5dBATT6CH INDIGITAL6CH INCD INA/D INREV AMPA/D INREV AMP-20dBFS+D/A OUT70.8
6、mV REF6dB6dBD/A OUT100mV REF+D/A OUTLPFREV AMPSURR/SBCENTERSUM S/WSW SUMREV AMPVOL 00MUTEPOWER AMPD/A OUT100mV REF-20dB-10dB-20dB-10dBTONE CONTROL-18dBH/P OUT(200mV)(200mV)FRONTA/D INREV AMPINPUTBUFFERAMPDSP OUT-18dBVOL 00PRE AMPSPK OUTFRONT2.83V(1W/8ohm)CENTERSURROUNDSURROUND BACKSPK OUTCENTERSURRO
7、UNDSPK OUT2.83V(1W/8ohm)H/P OUT47mV(0.27mW/8ohm)SPK OUTFRONT4AVR-2105/885 / AVC-1890SUB WOOREROdBD/ALFE- -+D/ALFE6dBMUTEMUTE6CH IN-30dB-20dB-5dB30dBDSP OUT-20dBFS6dB+- -VOL 0021.5dB-10dB20dB10dB-30dBFS-10dBFS0dBFSFront D/A Out100mV refD/A OUTLPFREV AMPSW SUMREV AMPSUB WOOFERPRE OUTSUB WOOFERPRE OUT3
8、73mV(112mV)(200mV)Config1 -38dBFS10.5dBTO FRONT CH6CH INPUTSUB_WOOFERConfig2-28dBFS10dB-18dBPRE AMP5AVR-2105/885 / AVC-1890FRONT VS SW+A/DA/DDIR+- -6CH IN(200mV)DIGITALCD IN6CH IN-12dBA/D INREV AMPA/D INREV AMPA/D INREV AMPHPFD/A OUTLPF-31.2dBMUTEREV AMPSUM S/WSW SUMREV AMP-11.66dBELECTRICVOLUME21.5
9、6dB upPRE AMP-13.14dBMUTEPOWER AMP-35.5dB down-20dB-10dB0dB10dB20dB30dB40dB6CH INCD IN+INPUTBUFFERAMP- -0dBFSDSP withTone control-38dBFS-30dBFSSW-20dBFS-10dBFSFront0dBFSD/A-13.2dB- -1.54dB up-16.7dB18dB down+ATT-20dBFS18dB down16.6dB up-13.06dB26.02 dB up-30dBFS-10dBFSFRONT6.8dB upConfig16.8dB upD/A
10、-34.7dB-29.66dB14.5dB upH/P OUT73mVSPK OUTFRONT4.35VH/P OUTSPK OUTFRONTFRONT VS SWD/A OUT100mV REF6AVR-2105/885 / AVC-1890BLOCK DIAGRAMYFM+21591349YSW12+CYY&+CBfs1-15Y414154Cr13Y1412SRSLC+LLINE_2DSDATA4DSDATA2INDAI_P13(80)LINE_1CBLINE_2CBLINE_3CRE3 ONLYEX_SWEX_SLR+SelectorHPFDATA256fsADCPD/RSTYMUTIN
11、GL.P.FFM & AMTA127064fsV.AUXVCR2V.AUXTV/DBSVCRRMC GNDFCX10-0325MHzINH+YOUTCr-+5.6VQ1022-12Q10281321Y/CEX_CEX_SREX_FLCXP 740010RESONATOR13KEY_MATRIX14IC1008DIRTUNERAVR-36VTC94A27UGTC94A27UGLC75721NE78097906MAIN +B+7805SBR-+SURR L-+-+SBRVCRLINE_2LINE_3CRLINE_3LINE_1CRLINE_1CBLINE_2AM ANTFM ANTVCR2VCR1
12、V.AUXTUNERTV/DBSCDCOAXIALEX_SREX_FREX_FLEX_C+12.288MHz+INPUTDIRPLL CIRCUITAM TUNINGIF FILTER-fs64fsCRADCMPX ICDIGITALFILTERDIGITALFILTERSERIAL DATAI/O PORTY/Cb/Cr64fsTV/DBSVCR1DVD/VDPVCR2VCR1TV/DBSCXA1511MMUTE+RAMCIC100453S-VIDEO DET+5.6V-Q101253Q1027CMIXCbEX_SLEX_FRu-COM12MHzYAMPY/CQ1014FL DRIVERDS
13、Pu-COMDSPVOLUMEFL DRIVER7806791578057815MAIN -B+FILAMENT AC-+SBLCENTER-+SURR R-+-+-SWSLSRSBLFLSPK AMIC INPHONOADIN(24)SLRCK(23)LINE_3LINE_1IF ICALRCLK/FSTDMDSDATA3DSDATA1DAI_P15(82)DAI_P14(81)CbREMOTE CONTIN/OUTMUTE-H/P OUTFRSPK BTV/DBSANALOG OUTREC_SWITCHIGINPUT_SWITCHIGXINLock DetectSelectorVOLUME
14、DLRCLKMCLKVOLUMEDBCLKRDATA(21)RMCK(16)74LCX244VIDEO SWITCHBA7626DVD/VDPVCR2 OUTINHC-VIDEO INPUTDVD/VDPDACDAI_P11(78)NJM2274RCOMPONENT DET+5.6VSW F SUMDATA1.2VCODECTC90A69F+5V (A/D POWER)DSP_FRANA_INANA_INDATAJAPAN ONLYDVD/VDPANALOG INDIGITAL INLOOP FILTERFROM u-COMFRONTENDIF AMP+TC9274-011TC9273-004
15、DEMODULATIOND-VIDEO OUTPUTIF FILTERCODECAD1837VOLUMEVOLUMEVOLUMEVOLUMEVOLUMEASDATASBCK(22)RBCK(17)RLRCK(20)BUFFERVCR1 OUTVCR2 OUTVCR1 OUTS-VIDEO INPUTVIDEO SWITCHBA7626VIDEO SWITCHBA7626VIDEO SWITCHCOMP-VIDEOINPUTRELAYDACDIGITALFILTERDACDIGITALFILTERDACSELECTOR74LVX157ADSP-21266DAI_P10(77)DAI_P9(71)
16、DAI_P12(79)ROM128K X 8128K X 8MONITOR OUTIC1001IC1001IC1007IC606OSDLC74781IC1001C-VIDEO DETIC1008RMC DATATA1270Y/Cb/CrTUNER PLLMONITOR OUT3.3VIC1004VIDEO POWERVIDEO POWERFUNCTION,OP AMP7805FUNCTION,OP AMPRELAY B+MONITOR OUTFLTEX_SWCENTERANA_HFPAUDIO SWITCHINGANA_HFPTC9164FLT DRIVER16-ST-66GNKPOWER S
17、/W (1-)DIGITAL OUTLC89057W-VF4VOLUMECONTROL PORTABCLKRMC IN/OUTVIDEO SWITCHBA7626DIGITALFILTERCLOCKDIGITALFILTERDAI_P16(86)DAI_P20(94)CLK_IN(142)DIGITAL AUDIO DECODERIC74781_19PINSEP OUTIC74781_5PINBLANK OUTVIDEO POWERCOMP-VIDEODSP_FLFL DISPLAYRELAYD-VIDEO INPUT(JAPAN ONLY)OPTICAL_4OPTICAL_3CONTROL
18、DATAFRONT A L6CH_INPUTMULTI OUTVCR2 OUTVCR1 OUTCDR/TAPE OUTDVD/VDPCDR/TAPEFROM MICOMOPTICAL_2OPTICAL_1POWER S/W (2-)+5V (DSP PART PWR)SwitchedINPUTPOWER AMPDIGITAL AUDIOFRONT B RFRONT B LFRONT A RSPEAKER OUTPRE OUT7AVR-2105/885 / AVC1890CAUTION IN SERVICING Initializing AV SURROUND RECEIVERInitializ
19、ing AV SURROUND RECEIVERAV SURROUND RECEIVER initialization should be performed when the mcom, peripheral parts of mcom, and DSP P.W.B. are replaced.1.Switch off the unit .2.Hold the following SPEAKERS-A button and SPEAKERS-B button, and switch on the unit.3.Check that the entire display is flashing
20、 with aninterval of about 1 second, and release your fingersfrom the 2 buttons and the microprocessor will be initializedNote: Note: If step 3 does not work, start over from step 1. Alluser settings will be lost and this factorysetting will be recovered when this initialization mode. So make sure to
21、 memorize your setting for restoring after the initialization.時注意事項 AV 初期化 AV 初期化周辺部品、DSP 基板等交換場合、AV 初期化行下。1. OFF 。2.SPEAKERS-A SPEAKERS-B 同時押、押 ON 。3. 表示約 1 秒間隔点滅確認後、2 指離。初期化。注意 :注意 :上記 3 状態場合、一度操作 1 直。 初期化行客様設定内容工場出荷 状態戻、設定内容 控初期化後再設定。8AVR-2105/885 / AVC-1890ADJUSTMENTAudio SectionIdling CurrentRe
22、quired measurement equipment : DC Voltmeter調整必要測定器 : 直流電圧計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 spe
23、aker, 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 30、湿度常湿。Adjustment(1)Remove top cover and set VR101, VR102, VR103, VR104, VR105 on Amp. Unit, VR106,107 on SURR.-BACK ch Amp.Unit at full counterclockwise ( ) position.(2)Connect DC Voltmeter to test points (FRONT-Lch: TP104, FRONT-Rch: TP105,
24、CENTER ch: TP103,SURROUND-Lch:TP101, SURROUND-Rch:TP102, SURROUND-BACK Lch:TP106, SURROUND-BACK Rch:TP107).(3)Connect power cord to AC Line, and turn power switch ON.(4)Presetting.MASTER VOLUME : - counterclockwise ( min.)MODE: 7CH STEREOFUNCTION: CD(5)Within 2 minutes after the power on, turn VR101
25、 clockwise ( ) to adjust the TEST POINT voltage to 1.5 mV 0.5 mVDC.(6)After 10 minutes 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VR106,107反時計方向()回切状態。 (2
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