Denon AVR-1804 Service Manual
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Denon AVR-1804 Service Manual

Av surround receiver / amplifier
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MODEL
AV SURROUND RECEIVER / AMPLIFIER
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.

SERVICE MANUAL

AVR-1804/884
AVC-1880
16-11, YUSHIMA 3-CHOME, BUNKYOU-KU, TOKYO 113-0034 JAPAN
For U.S.A., Canada, Europe, U.K.,
Asia, China,Taiwan R.O.C., Korea
& Japan model
注 意
サービスをおこなう前に、このサービスマニュアルを
必ずお読みください。本機は、火災、感電、けがなど
に対する安全性を確保するために､さまざまな配慮を
おこなっており、また法的には「電気用品安全法」に
もとづき、所定の許可を得て製造されております。
従ってサービスをおこなう際は、これらの安全性が維
持されるよう、このサービスマニュアルに記載されて
いる注意事項を必ずお守りください。
本機の仕様は性能改良のため、予告なく変更する
ことがあります。
補修用性能部品の保有期間は、製造打切後8年です。
修理の際は、必ず取扱説明書を参照の上、作業を
行ってください。
本文中に使用しているイラストは、説明の都合上
現物と多少異なる場合があります。
X0173V.01 DE/CDM 0307

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  • Page 1: Service Manual

    For U.S.A., Canada, Europe, U.K., Asia, China,Taiwan R.O.C., Korea & Japan model SERVICE MANUAL AVR-1804/884 MODEL AVC-1880 AV SURROUND RECEIVER / AMPLIFIER 注 意 サービスをおこなう前に、このサービスマニュアルを 必ずお読みください。本機は、火災、感電、けがなど に対する安全性を確保するために､さまざまな配慮を おこなっており、また法的には「電気用品安全法」に もとづき、所定の許可を得て製造されております。 従ってサービスをおこなう際は、これらの安全性が維 持されるよう、このサービスマニュアルに記載されて いる注意事項を必ずお守りください。 本機の仕様は性能改良のため、予告なく変更する ことがあります。 補修用性能部品の保有期間は、製造打切後8年です。 修理の際は、必ず取扱説明書を参照の上、作業を Please use this service manual with referring to the 行ってください。...
  • Page 2 AVR1804/884 / AVC-1880 SAFETY PRECAUTIONS The following check should be performed for the continued protection of the customer and service technician. LEAKAGE CURRENT CHECK Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis resistance check.
  • Page 3 AVR-1804/884 / AVC-1880 LEVEL DIAGRAMS FRONT/CENTR/SURROUND/SURROUND BACK INPUT D/A OUT A/D IN A/D IN A/D IN SW SUM ELECTRIC BUFFER REV AMP PRE AMP TONE POWER AMP REV AMP REV AMP REV AMP REV AMP VOLUME DIGITAL SPK OUT CD IN...
  • Page 4 AVR-1804/884 / AVC-1880 SUB WOORER D/A OUT SW SUM ELECTRIC REV AMP PRE AMP REV AMP VOLUME SUB_WOOFER 6CH INPUT SUB WOOFER DSP OUT PRE OUT MUTE MUTE 30dB 20dB 0dBFS 10dB Front D/A Out 200mV ref TO FRONT CH...
  • Page 5 AVR-1804/884 / AVC-1880 BLOCK DIAGRAM 512K X 8 64K X 16 BUFFER 74LV244 RESONATOR KEY_MATRIX 64fs DIGITAL OUT TCLK2(47) 12MHz LC89057W-VF4 64fs TCLK1(65) RCLK1(68) 64fs RBCK(17) DIGITAL AUDIO DECODER OPTICAL_1 SPEAKER OUT RFS1(69) MELODY 32 RLRCK(20) OPTICAL_2 PF6(41) FL DISPLAY...
  • Page 6 AVR-1804/884 / AVC-1880 ADJUSTMENT Tuner Section (AVR-1804/884 only) CONNECTION DIAGRAM OF MEASURING INSTRUMENTS T402 T403 STEREO R471 MODULATOR IC402 75ohm FM SSG VR402 Digital Voltmeter TUNER B'D FM ALIGNMENT Input Output Adjustment Tuning Alignment Step Frequency Input Item Type Frequency...

  • Page 7: Audio Section

    AVR-1804/884 / AVC-1880 Audio Section Idling Current Required measurement equipment : DC Voltmeter 調整に必要な測定器 : 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 tempereture 15 °C ~ 30 °C (59 °F ~ 86 °F).
  • Page 8 AVR-1804/884 / AVC-1880 SEMICONDUCTORS Only major semiconductors are shown, general semiconductors etc. are omitted to list. 主な半導体を記載しています。汎用の半導体は記載を省略しています。 IC’s CXP740010 (IC201) PI6/SO1 PI7/SI1 PE0/INT0 PE1/INT2 PE2/PWM0 PE3/PWM1 PB7/SI2 PB6/SO2 PB5/SCK2 PB4/TO2 PG0/TxD PG1/RxD PG2/EC0 PG3/EC1 PG4/EC2 TOP VIEW PG5/INT3 PG6/INT4 PG7/CINT...
  • Page 9 AVR-1804/884 / AVC-1880 Pin Name Function 24 RELAY SPK A FRONT A RELAY 25 RELAY SURR SURROUND RELAY 26 RELAY CNT CENTER RELAY 27 RELAY H/P H/P RELAY 28 FUNC UP ENCODER INPUT(FUNCTION) 29 H/P DETECT H/P DETECT 30 FUNC DOWN...
  • Page 10 AVR-1804/884 / AVC-1880 Pin Name Function 77 PWR DOWN POWER DOWN DETECT 78 RDS CLK TDA7330 CONTROL CLOCK 79 RDS DATA TDA7330 CONTROL DATA MUTE power ON/OFF switching 80 MUTE PWR 81 9184 CE TC9184 CONTROL 82 M32 INTREQ MELODY32 CONTROL...
  • Page 11 AVR-1804/884 / AVC-1880 MELODY32 (IC804) TOP VIEW MELODY32 Terminal Function Pin Name Pin Name Pin Name Pin Name Pin Name Pin Name 25 V 49 DR2 73 RESET 97 A11 121 WR DDEXT 26 HACK 50 RCLK2 74 TDO 98 A12...
  • Page 12 AVR-1804/884 / AVC-1880 AD1837 (IC808) DVDD DVDD DBCLK CLATCH DLRCLK PD/RST AGND AGND OUTR4 TOP VIEW OUTL1 OUTL4 OUTR1 AGND AGND AVDD AVDD OUTR3 OUTL2 DVDD DVDD ODVDD ALRCLK ABCLK ASDATA CCLK CLATCH COUT MCLK PD/RST M/S AVDD AVDD DLRCLK...
  • Page 13 AVR-1804/884 / AVC-1880 LC89057W (IC807) EMPHA/UO AUDIO/VO XMODE RXOUT Microcontroller C bit, U bit 37 DO 36 RERR 24 SDIN 23 SLRCK Input Demodulation Data 22 SBCK Selector 21 RDATA & Selector 21 RDATA Lock Detect XMODE 20 RLRCK RX5/VI...
  • Page 14 AVR-1804/884 / AVC-1880 Pin Name Function XOUT X’tal osc. connecting output terminal X’tal osc. connection, external clock input terminal (24.576MHz or 12.288MHz) DVDD — Digital power DGND — Digital GND EMPHA/UO Emphasis information/U-data output/Chip address setting terminal AUDIO/VO Non-PCM detect/V-flag output/ Chip address setting terminal...
  • Page 15 AVR-1804/884 / AVC-1880 LC75721E (IC301) MM74LCX244 (IC809~811) LC75721E Terminal Function TOP VIEW Symbol Function Power terminal +5V Power terminal GND Power terminal FL drive AM 17 Serial data transfer terminal AM 18 DI: Data AM 19 AM 20 CL: Clock...

  • Page 16: Table Of Contents

    AVR-1804/884 / AVC-1880 BU4052BCF (IC601D,602D) Truth Table ON Switches YOUT COMMON Y XOUT COMMON X NONE X = Don’t Care MM74HC4053MX (IC1001, 1004, 1008) KIC9459F (IC706) Truth Table Control Inputs R-OUT L-OUT Select Enable ONSwitches 50kohm/ 91STEP Z0 Y0 X0...
  • Page 17 AVR-1804/884 / AVC-1880 LC74781 (IC1006) Pin No. Symbol Name VSS1 Xtal IN Xtal oscillation Xtal OUT Xtal oscillation CTRL1 Xtal oscillation input switching BLANK Blank output OSC IN LC oscillation OSC OUT LC oscillation CHARA Character output Enable input SCLK...
  • Page 18 AVR-1804/884 / AVC-1880 NJM2274 (IC1007) Cmute Vout Power Save Vsag TRANSISTORS DTA114ES DTA114EK DTA114YS DTA144EK DTC Series DTA Series DTA114ES DTC144EK DTC114TS DTC114TK DTC114YK DTC114YS DTC144ES DTC144EK FRONT VIEW VIEW 10kohm 10kohm DTA114EK 10kohm 10kohm DTC114EK DTA114ES 10kohm 10kohm DTC114TK 10kohm...
  • Page 19 AVR-1804/884 / AVC-1880 FL DISPLAY 16-ST-66GNK (FL301) TUNED STEREO PHONO TUNER DVD / AUTO -2 -3 V.AUX TAPE ZONE2 PRO LOGICII DIGITAL DIGITAL ANALOG G2~G16 G12 G10 TUNED STEREO PHONO TUNER DVD / VDP TV / DBS AUTO -2 -3 V.AUX...
  • Page 20 AVR-1804/884 / AVC-1880 PRINTED WIRING BOARDS MAIN P.W.B. UNIT COMPONENT SIDE...
  • Page 21 AVR-1804/884 / AVC-1880 FOIL SIDE...
  • Page 22 AVR-1804/884 / AVC-1880 CPU P.W.B. UNIT D304 CN303 Q218 FLT301 R335 D303 J304 J301 D302 J302 ZD301 C322 J362 VEC301 R353H L301O LED303 LED302 LED301 LED310 RMC301 J317 C301O J361 J332 C302O J333 J336 R307A J330 C318 LED304 LED305 LED306...
  • Page 23 AVR-1804/884 / AVC-1880 Q307 R378FL R376FL 14 12 R379FL R377FL Q203 R355 Q300 Q301 R310 D305 Q302 Q303 D306 LC75721NE Q305 Q304 C305 C306 R301B R302B R304A R302A R303B SCREW 3*17 SCREW 3*17 9 10 R347 R348 R351 R350 R237...
  • Page 24 AVR-1804/884 / AVC-1880 CNT P.W.B. UNIT ( FOR U.S.A., CANADA, EUROPE, U.K., ASIA, CHINA, TAIWAN R.O.C. & KOREA MODELS ) COMPONENT SIDE...
  • Page 25 AVR-1804/884 / AVC-1880 FOIL SIDE...
  • Page 26 AVR-1804/884 / AVC-1880 CNT P.W.B. UNIT ( FOR JAPAN MODEL ) COMPONENT SIDE...
  • Page 27 AVR-1804/884 / AVC-1880 FOIL SIDE...
  • Page 28 AVR-1804/884 / AVC-1880 INPUT-PRE AMP P.W.B. UNIT COMPONENT SIDE...
  • Page 29 AVR-1804/884 / AVC-1880 FOIL SIDE...
  • Page 30 AVR-1804/884 / AVC-1880 DSP P.W.B. UNIT COMPONENT SIDE...
  • Page 31 AVR-1804/884 / AVC-1880 FOIL SIDE...
  • Page 32 AVR-1804/884 / AVC-1880 C-VIDEO P.W.B. UNIT COMPONENT SIDE...
  • Page 33 AVR-1804/884 / AVC-1880 FOIL SIDE...
  • Page 34 AVR-1804/884 / AVC-1880 NOTE FOR PARTS LIST Part indicated with the mark " " are not always in stock and possibly to take a long period of time for supplying, or in some case supplying of part may be refused.
  • Page 35 AVR-1804/884 / AVC-1880 PARTS LIST OF P.W.B. UNIT ASS’Y Note : The symbols in the column “Remarks” indicate the following destinations. E3 : U.S.A. & Canada model E1C : China model EU : U.S.A. model (AVR-884) EUT : Taiwan R.O.C. model...
  • Page 36 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks D135 963 0096 508 Diode 1N4148 D136 963 0058 504 Zener diode MTZJ11B D137 963 0096 508 Diode 1N4148 D138 963 0058 407 Diode IN4007 D141 963 0058 407 Diode IN4007...
  • Page 37 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks R110FR Metal oxide 0.22 ohm 1W R110SL Metal oxide 0.22 ohm 1W R110SR Metal oxide 0.22 ohm 1W R111C Metal oxide 0.22 ohm 1W R111FL Metal oxide 0.22 ohm 1W R111FR Metal oxide 0.22 ohm 1W...
  • Page 38 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks C104SL 963 9003 084 Ceramic 100pF/500V C104SR 963 9003 084 Ceramic 100pF/500V C105C 963 9008 640 Mylar film 0.022uF/100V C105FL 963 9008 640 Mylar film 0.022uF/100V C105FR 963 9008 640 Mylar film 0.022uF/100V...
  • Page 39 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks CN391 963 0060 602 7P connector base CN392 4P connector cord CN393 963 0050 104 4P connector base CN901 3P WIRE CN931A 960 0059 707 2P connector cord E2,EK,E2A,E1C,EUT,E1K CP101...
  • Page 40 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks TP104 960 0161 405 3P connector base TP105 960 0161 405 3P connector base VEC303 ENCODER SW Heat sink Heat sink Power trans. (Mini) E3,EU,EUT Power trans. (Mini) E2,EK,E2A Power trans. (Mini)
  • Page 41 AVR-1804/884 / AVC-1880 CPU P.W.B. UNIT Ref. No. Part No. Part Name Remarks SEMICONDUCTORS GROUP IC202 963 0057 602 IC TDA7330BD E2,EK,E2A IC203 960 0080 201 IC KIC9164AN IC204 963 0043 603 IC KIC9482F IC205 960 0174 502 IC NJM2068DD...
  • Page 42 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks LED301 960 0197 204 LED PI5-RD/HL50RDRF4T LED302 960 0197 204 LED PI5-RD/HL50RDRF4T LED303 960 0197 204 LED PI5-RD/HL50RDRF4T LED304 960 0197 204 LED PI5-RD/HL50RDRF4T LED305 960 0197 204 LED PI5-RD/HL50RDRF4T...
  • Page 43 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks C223SR 963 9005 914 Electrolytic 4.7uF/50V C227 963 9005 765 Electrolytic 10uF/35V C230C 963 9005 914 Electrolytic 4.7uF/50V C232 963 9004 575 Ceramic chip 100pF/50V C233 963 9004 575 Ceramic chip 100pF/50V...
  • Page 44 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks CN605 3P WIRE CN606 4P SHIELD WIRE CN609 3P SHIELD WIRE CP301 23P FFC connector base CP302 5P connector base CP303 963 0049 102 3P connector base CP391 7P WIRE...
  • Page 45 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks X201 960 0181 003 Resonator CST12.0MTW-TF01 X202 CRYSTAL 4.332MHz E2,EK,E2A 960 0184 408 FLT holder FLT (16-ST-66GNK)
  • Page 46 AVR-1804/884 / AVC-1880 CNT P.W.B. UNIT Ref. No. Part No. Part Name Remarks SEMICONDUCTORS GROUP IC201RM 960 0174 104 IC CXA1511M E3,EU IC401 963 0043 700 IC LC72131 E3,EU,E2,EK,E2A,E1C,EUT,E1K IC402 963 0043 904 IC LA1266 E3,EU,E2,EK,E2A,E1C,EUT,E1K IC403 963 0044 000...
  • Page 47 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks Q653 960 0005 105 Transistor KTA1266Y Q654 960 0005 105 Transistor KTA1266Y Q655 960 0005 105 Transistor KTA1266Y Q656 960 0005 105 Transistor KTA1266Y D201RM 960 0095 704 Zener diode MTZJ6.2B...
  • Page 48 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks R570 963 9005 642 Metal film 1.2 kohm 1W R651T 244 2043 982 Metal oxide 0.22 ohm 1W R652T 244 2043 982 Metal oxide 0.22 ohm 1W R661 244 2051 961...
  • Page 49 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks C441 963 9005 749 Electrolytic 1uF/50V E3,EU,E2,EK,E2A,E1C,EUT,E1K C442 963 9005 846 Electrolytic 2.2uF/50V E3,EU,E2,EK,E2A,E1C,EUT,E1K C443 963 9005 765 Electrolytic 10uF/35V E3,EU,E2,EK,E2A,E1C,EUT,E1K C444 963 9005 914 Electrolytic 4.7uF/50V E3,EU,E2,EK,E2A,E1C,EUT,E1K C445 963 9005 765...
  • Page 50 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks C601D 963 9005 312 Electrolytic 100uF/10V E3,EU,E2,EK,E2A,E1C,EUT,E1K C601D 963 9005 312 Electrolytic 100uF/10V C602D 963 9005 312 Electrolytic 100uF/10V E3,EU,E2,EK,E2A,E1C,EUT,E1K C602D 963 9005 312 Electrolytic 100uF/10V C603D 963 9005 312...
  • Page 51 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks C638D 963 9005 914 Electrolytic 4.7uF/50V C651 Electrolytic 22uF/25V C651T 963 0021 900 Mylar film 0.047uF/100V C651T1 963 0021 900 Mylar film 0.047uF/100V C651T2 963 0021 900 Mylar film 0.047uF/100V...
  • Page 52 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks CB401 963 0053 800 BEADS INDUCTOR E3,EU,E2,EK,E2A,E1C,EUT,E1K CF401 960 0187 104 Ceramic filter SFE10.7MA8 E3,EU,E1C,EUT,E1K CF401 960 0177 509 Ceramic filter SFE10.7MS3GH E2,EK,E2A CF402 960 0187 104 Ceramic filter SFE10.7MA8...
  • Page 53 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks T406 960 0037 607 antibirdie filter E2,EK,E2A VR401 960 0096 606 Semi fixed resistor 20kohm E3,EU,E2,EK,E2A,E1C,EUT,E1K VR402 960 0096 402 Semi fixed resistor 100kohm E3,EU,E2,EK,E2A,E1C,EUT,E1K VR403 963 0052 005 Semi fixed resistor 200kohm...
  • Page 54 AVR-1804/884 / AVC-1880 INPUT P.W.B. UNIT Ref. No. Part No. Part Name Remarks SEMICONDUCTORS GROUP IC210SB 963 0024 004 IC NJM2068M IC701 963 0083 207 IC TC9274N-011 IC702 960 0174 201 IC TC9273N-004 IC703 960 0174 502 IC NJM2068DD IC704...
  • Page 55 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks CAPACITORS GROUP C231SB Electrolytic 4.7uF/50V C232SB 963 9004 630 Ceramic chip 39pF/50V C251 963 9004 698 Ceramic chip 0.01uF/50V C252 963 9004 698 Ceramic chip 0.01uF/50V C253 963 9004 698 Ceramic chip 0.01uF/50V...
  • Page 56 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks C709R 963 9005 765 Electrolytic 10uF/35V C710BL 963 9005 765 Electrolytic 10uF/35V C710L 963 9004 575 Ceramic chip 100pF/50V C710R 963 9004 575 Ceramic chip 100pF/50V C711B 963 9005 875...
  • Page 57 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks JK703 960 0188 200 4P pin jack JK704 960 0188 103 2P pin jack L701L 235 9003 002 FTZ CHOKE COIL E2,EK L701R 235 9003 002 FTZ CHOKE COIL E2,EK...
  • Page 58 AVR-1804/884 / AVC-1880 DSP P.W.B. UNIT Ref. No. Part No. Part Name Remarks SEMICONDUCTORS GROUP IC801 269 0186 002 IC GP1FA502RZ IC802 269 0186 002 IC GP1FA502RZ IC803 269 0186 002 IC GP1FA502RZ IC804 963 0096 304 IC DSP MELODY 32 LQFP...
  • Page 59 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks C818 963 9004 698 Ceramic chip 0.01uF/50V C820 963 9005 309 Electrolytic 47uF/10V C821 963 9005 312 Electrolytic 100uF/10V C822 963 9004 708 Ceramic chip 0.1uF/50V C823 963 9005 752...
  • Page 60 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks C874FL Ceramic chip 560pF/50V C874FR Ceramic chip 560pF/50V C874SB Ceramic chip 560pF/50V C874SL Ceramic chip 560pF/50V C874SR Ceramic chip 560pF/50V C874SW Ceramic chip 560pF/50V C875 963 9004 698 Ceramic chip 0.01uF/50V...
  • Page 61 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks OTHER PARTS GROUP CB803 963 0050 502 Chip emifil CB805 963 0050 502 Chip emifil CB806 963 0050 502 Chip emifil CB807 963 0050 502 Chip emifil CB808 963 0050 502...
  • Page 62 AVR-1804/884 / AVC-1880 C-VIDEO P.W.B. UNIT Ref. No. Part No. Part Name Remarks SEMICONDUCTORS GROUP IC1000 963 0083 304 IC BA7626 IC1001 IC MM74HC4053MX IC1002 963 0083 304 IC BA7626 IC1003 963 0074 504 IC BU2090F IC1004 IC MM74HC4053MX IC1005...
  • Page 63 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks D1000 963 0096 508 Diode 1N4148 D1001 963 0096 508 Diode 1N4148 D1002 963 0096 605 Diode 1N4148WS D1003 963 0096 605 Diode 1N4148WS D1004 963 0096 605 Diode 1N4148WS...
  • Page 64 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks C101SB 963 9005 312 Electrolytic 100uF/10V C1020 Ceramic 1pF/50V C1021 Electrolytic 47uF/35V C1022 Ceramic chip 20pF/50V C1023 963 9005 749 Electrolytic 1uF/50V C1024 963 9004 737 Ceramic chip 0.022uF/25V C1025...
  • Page 65 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks C232FR 963 9004 669 Ceramic chip 56pF/50V C232SL 963 9004 630 Ceramic chip 39pF/50V C232SR 963 9004 630 Ceramic chip 39pF/50V C232SW 963 9004 669 Ceramic chip 56pF/50V C235SW 963 9004 575...
  • Page 66 AVR-1804/884 / AVC-1880 EXPLODED VIEW (FOR U.S.A., CANADA MODEL) WARNING: Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacturer.
  • Page 67 AVR-1804/884 / AVC-1880 EXPLODEDB VIEW (FOR EUROPE, ASIA, KOREA MODEL) WARNING: Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacturer.
  • Page 68 AVR-1804/884 / AVC-1880 EXPLODED VIEW (FOR U.K., CHINA MODEL) WARNING: Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacturer.
  • Page 69 AVR-1804/884 / AVC-1880 EXPLODED VIEW (FOR TAIWAN R.O.C. MODEL) WARNING: Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacturer.

  • Page 70: Bass

    AVR-1804/884 / AVC-1880 EXPLODED VIEW (FOR JAPAN MODEL) WARNING: Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacturer.
  • Page 71 AVR-1804/884 / AVC-1880 PARTS LIST OF EXPLODED VIEW Note : The symbols in the column “Remarks” indicate the following destinations. E3 : U.S.A. & Canada model E1C : China model EU : U.S.A. model (AVR-884) EUT : Taiwan R.O.C. model...

  • Page 72: L-In

    AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks Q'ty DSP P.W.B ASSY C-VIDEO P.W.B ASSY E3,EU C-VIDEO P.W.B ASSY CPU-CNT P.W.B ASSY 1CH-AMP P.W.B ASSY MULTI OUT P.W.B ASSY E3,EU OUTLET(E3) P.W.B ASSY E3,EU,EUT,N FRONT PANEL FRONT PANEL...

  • Page 73: Avr-1804/884 / Avc

    AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks Q'ty PCB SUPPORTER SUPPORTER BRACKET TRANS BRACKET 960 0184 000 SCREW BRACKET POWER TRANS E3,EU,EUT POWER TRANS E2,EK,E2A POWER TRANS E1C,E1K POWER TRANS BACK PANEL BACK PANEL BACK PANEL E2,E2A...
  • Page 74 AVR-1804/884 / AVC-1880 Ref. No. Part No. Part Name Remarks Q'ty 963 0018 104 SCREW (2S 3X17 ZNY/BH) E3,Silver & Gold models SCREW (2S 3X17 BK/BH) EU,E2(Black model),EK 963 9004 025 SCREW (3S 4X6 ZNY/BH) SCREW (2S 3X17 BK/BH) Black model...
  • Page 75 AVR-1804/884 / AVC-1880 PACKING VIEW Contents...
  • Page 76 AVR-1804/884 / AVC-1880 PARTS LIST OF PACKING & ACCESSORIES Note : The symbols in the column “Remarks” indicate the following destinations. E3 : U.S.A. & Canada model E1C : China model EU : U.S.A. model (AVR-884) EUT : Taiwan R.O.C. model...
  • Page 77 AVR-1804/884 / AVC-1880 WIRING DIAGRAM...
  • Page 78 AVR-1804/884 / AVC-1880 配線図について NOTE FOR SCHEMATIC DIAGRAM  ! 印の部品は安全を維持するために重要な部品です。 WARNING: 従って交換時は必ず指定の部品を使用してください。 Parts marked with this symbol have critical charac- teristics. Use ONLY replacement parts recommended by the manufacturer. 注） CAUTION: (1) 指定なき抵抗値は Ω、ｋ は ｋΩ、M は MΩ を Before returning the unit to the customer, make sure you 示す。...

  • Page 79: L-Out

    AVR-1804/884 / AVC-1880 SCHEMATIC DIAGRAMS (1/11) INPUT B'D IC704A NJM2068 R718L R700L R701L C709L C710L C714L R722L 10/35 100P-J 4.7/50 R720L R721L INPUT BUFFER C711L 130K 220/6.3 C712L C713L R719L 24N(M) 6N8(M) IC705A L701L EUROPE ONLT NJM2068 R727L PHONO AD-R...
  • Page 80 AVR-1804/884 / AVC-1880 SCHEMATIC DIAGRAMS (2/11) CN705 R859L R861L R862L C865L A/D_IN_L 120P-J JTAG CONTROL JACK IC816A R931L C864L IC815A BA4510F 47/16 BA4510F R860L R863L DSP_A1 R1024 R932L TP13 150K R931 DSP_113Pin R998 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76...
  • Page 81 AVR-1804/884 / AVC-1880 SCHEMATIC DIAGRAMS (3/11) CONNECTION B'D TO COMP-VIDEO SB_MUTE CP506 TONE_DFT 9184_CE PRE AMP B'D 9184_CLK 9184_DAT RLY_SPK_B PRE_RTN_GND R555FR R512FL R513FL 470K +15V RL551 R564FR R562FR -15V C503FL C505FL R554FR 220P-(500V) CN551 100K 33P-(500V) R560FR R561FR 510K...
  • Page 82 AVR-1804/884 / AVC-1880 SCHEMATIC DIAGRAMS (4/11) TO H/P UNIT SB_OUT TO CONNECTION UNIT C103FL Q101FL 100P-500V CP991 CP992 2SD2390 MAIN A R106FL C198C CENTER 4R7(1/4) R112FL Q104FL E2 ONLY KSC1845F R103FL MAIN A L L101FL C199FL GND L C192 SPK A...
  • Page 83 AVR-1804/884 / AVC-1880 SCHEMATIC DIAGRAMS (5/11) FROM DSP UNIT CP802 JP329 +15V1 R228 -15V2 R227 R258 CP701 74_73_CLK CPU_2 -15V CPU B'D TC9273_CE CPU_5 C231FL R240FL C220 C241 10/35 IC208A TC9274_STB CPU_1 NJM2068 74_73_DATA CPU_3 C213FL 100P-J 10/35 10/35 +15V...

  • Page 84: Monitor Out

    AVR-1804/884 / AVC-1880 SCHEMATIC DIAGRAMS (6/11) TO SVIDEO UNIT TO SVIDEO UNIT VIDEO_B'D 1 2 3 9 10 C1000 22/25 VCR1 R1006 R1005 R1007 R1008 R1009 C1001 V.AUX/VCR2 22/25 R1010 D1013 D1012 1SS133T 1SS133T TV/DBS C1005 22/25 Q1000 Q1021 IC1001...
  • Page 85 AVR-1804/884 / AVC-1880 SCHEMATIC DIAGRAMS (7/11) C651 4.7/50 MULTIOUT B'D E3 ONLY S_VIDEO B'D C652 4.7/50 VCR1 R201ML R202ML R204ML MULTI-L OUT C202ML 4.7/50 JACK201M Q202ML Q201ML R203ML KTC2874B C653 KTC2874B C204ML 4.7/50 R205ML 10N-K FROM INPUT UNIT Q201MR R205MR...

  • Page 86: In5 Logic

    AVR-1804/884 / AVC-1880 SCHEMATIC DIAGRAMS (8/11) R952 COMP-VIDEO UNIT C636D TUNER R951 JACK601D C637D IC605D 100/10 BA7625 4.7/50 C638D CHASSIS CTLA R647D R923 C633D logic 1/50 VOUT1 4.7/50 TV/DBS C635D R645D C634D 1/50 logic CTLE R924 R646D CTLB 4.7/50 VOUT2...

  • Page 87: L-A-Gnd

    AVR-1804/884 / AVC-1880 SCHEMATIC DIAGRAMS (9/11) MONITOR OUT DVD/VDP TV/DBS CHASISS CHASISS CHASISS JACK603D JACK602D JACK601D C609D C617D C631D 100P-J 100P-J 100P-J R631D R632D R634D R644D R648D R649D C608D C616D C630D R610D CHASISS 100P-J D-VIDEO BOARD 100P-J 100P-J C607D C615D...
  • Page 88 AVR-1804/884 / AVC-1880 SCHEMATIC DIAGRAMS (10/11) TO CPU/VOL UNIT FROM TRANS UNIT CN303 CP303 FRONT BOARD ZD301 MTZ6.8B FLT301 16-ST-66GNK Q218 2SA933S TUNED STEREO PHONO TUNER V_AUX TAPE RMC301 AUTO ZONE2 REMOTE Q203 DTA144EK R335 PRO LOGIC II DIGITAL DIGITAL...
  • Page 89 AVR-1804/884 / AVC-1880 SCHEMATIC DIAGRAMS (11/11) FE401 FTH4-401TB TUNER B'D Q401 R456 CF401 C3880K 10M7A8 T401 L401 R410 VR402 R405 R409 VR401 100K C402 C401 100(1/4W)-R 1N-K 1N-K R471VT L402 10UH C438 1/50 Q407 C440 R479 C114YK CHASSIS C404 R428...

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