Denon AVR-786 Service Manual
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Denon AVR-786 Service Manual

Av surround amplifier
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MODEL
For purposes of improvement, specifications and
●
design are subject to change without notice.
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-1906/786
AV SURROUND RECEIVER
AVC-1620
AV SURROUND AMPLIFIER
TOKYO ,JAPAN
Denon Brand Company, D&M Holdings Inc.
For U.S.A., Canada, Europe,
Asia, 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。
 
Ver. 1
X0239 V.01 DE/CDM 0506

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Summary of Contents for Denon AVR-786

  • Page 1  修理の際は、必ず取扱説明書を参照の上、作業を行っ ● ● operating instructions without fail.  てください。   Some illustrations using in this service manual are  本文中に使用しているイラストは、説明の都合上現物 ● ● slightly different from the actual set.  と多少異なる場合があります。   TOKYO ,JAPAN Denon Brand Company, D&M Holdings Inc. X0239 V.01 DE/CDM 0506...
  • Page 2 AVR-1906 / AVR-786 / AVC-1620 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-1906 / AVR-786 / AVC-1620 DIMENSION...

  • Page 4: Caution In Servicing

    AVR-1906 / AVR-786 / AVC-1620 CAUTION IN SERVICING サービス時の注意事項 Initializing AV SURROUND RECEIVER AV サラウンドアンプの初期化について AV SURROUND RECEIVER initialization should be performed マイコンやマイコン周辺部品、Digital 基板等を交換した場合 when the µcom, peripheral parts of µcom, and Digital P.W.B. are は、AV サラウンドアンプの初期化を行って下さい。 replaced. 1. Switch off the unit.

  • Page 5: Audio Section

    AVR-1906 / AVR-786 / AVC-1620 ADJUSTMENT 調整 Audio Section オーディオセクション Idling Current アイドリング電流の調整 Required measurement equipment: DC Voltmeter 調整に必要な測定器 : DC Voltmeter 1. Preparation 1. 準備 (1) Avoid direct blow from an air conditioner or an electric (1) セットをクーラ、扇風機のそばなど風通しの良い場所 fan, and adjust the unit at normal room temperature 15 °C を避け、通常の使用状態に置きます。セットの周囲温...

  • Page 6: Video Section

    AVR-1906 / AVR-786 / AVC-1620 Video Section ビデオセクション Component Video Level Adjustment AVC-1620( 日本向けモデル）は調整は有りません。 Required measurement equipment etc.: Oscilloscope, DVD コンポーネントビデオレベルの調整 VIDEO PLAYER (ex: DVD-1500) 調整に必要な測定器 : Oscilloscope, DVD VIDEO PLAYER Test disc: DVD T-S01 ( 例 : DVD-1500) 1. Preparation テストディスク...
  • Page 7 AVR-1906 / AVR-786 / AVC-1620 Oscilloscope MONITOR OUT (Y,Cb,Cr) VR903 VR901 VR902 Video Section...
  • Page 8 AVR-1906 / AVR-786 / AVC-1620 Y- S i g n a l Volts I R E : F LT 100.0 714 ± 50mV 50.0 10.0 -20.0 -10.0 20.0 30.0 40.0 50.0 60.0 Fig.1 Component Video Y signal Vo l t s I R E : F LT 50.0...

  • Page 9: Block Diagram

    AVR-1906 / AVR-786 / AVC-1620 BLOCK DIAGRAM...

  • Page 10: Level Diagrams

    AVR-1906 / AVR-786 / AVC-1620 LEVEL DIAGRAMS (1/2)
  • Page 11 AVR-1906 / AVR-786 / AVC-1620 LEVEL DIAGRAMS (2/2)

  • Page 12: Top View

    AVR-1906 / AVR-786 / AVC-1620 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。 1. IC’s M30622MEP (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...
  • Page 13 AVR-1906 / AVR-786 / AVC-1620 PIN No. PIN NAME FUNCTION TC9273_STB TC9273-004(IC703) STB TC9273_DATA TC9273-004(IC703) DATA TC9273_CLK TC9273-004(IC703) CLOCK OPEN MIC_RELAY MIC RELAY (RLY701) CONTROL TC90A69/TA1270_CLK TC90A69(IC612) SCLOCK/TA1270BF(IC901) SCLOCK TC90A69/TA1270_DATA TC90A69(IC612) SDATA/TA1270BF(IC901) SDATA RS232C_TX RS232C SIGNAL OUTPUT RS232C_RX RS232C SIGNAL INPUT...
  • Page 14 AVR-1906 / AVR-786 / AVC-1620 PIN No. PIN NAME FUNCTION BD3811K1_DATA BD3811K1(IC701) DATA/BD3812F(IC702) DATA MUTE_POWER MUTE POWER CONTROL BU4904_STB(RELAY) BU4094(IC551) STB BU4094_STB(RELAY&MUTE) BU4094(IC553) STB BU4094_STB(MUTE) BU4094(IC552) STB S-MON_DET S-MONITOR DETECT COMP_DET COMPONENT SIGNAL INPUT DETECT C_DET CONPOSIT SIGNAL INPUT DETECT...
  • Page 15 AVR-1906 / AVR-786 / AVC-1620 ADSP-21266SKSTZ-1B (IC804) PIN 1 INDICATOR TOP VIEW ADSP-21266SKSTZ-1B Terminal Function LQFP LQFP LQFP LQFP Pin Name Pin # Pin Name Pin # Pin Name Pin # Pin Name Pin # DDINT DDINT DDEXT CLKCFG0 DDINT...
  • Page 16 AVR-1906 / AVR-786 / AVC-1620 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...
  • Page 17 AVR-1906 / AVR-786 / AVC-1620 Function Pin Name 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...
  • Page 18 AVR-1906 / AVR-786 / AVC-1620 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...
  • Page 19 AVR-1906 / AVR-786 / AVC-1620 TC90A69F (IC612) NJM2274R (IC607) TC90A69F (IC609) NJM2274R (IC614) VIEW PLL DET IIC BUS Power Save CTL 8fsc 4fsc (8fsc) CORING V-ENHANCER Vref CORING Ped. DELAY PEAKING CLIP INTERPOLATION LINE LINE Clamp MEMORY MEMORY KILLER 3 Vout Disc.

  • Page 20: Front View

    AVR-1906 / AVR-786 / AVC-1620 BA7625 (IC651) BA7626 (IC612,613,616,652,653) Monitor OUT CTL A V OUT1 LOGIC CTL E CTL B LOGIC V OUT2 CTL D CTL C MONITOR OUT V OUT 1 V OUT 2 IN 1 IN 1 IN 2...

  • Page 21: Function Table

    AVR-1906 / AVR-786 / AVC-1620 LH28F800BJE (IC805) SN74LV573APW (IC818,819) SN74LVC139APWR (IC820) FUNCTION TABLE (each decoder/demultiplexer) INPUTS OUTPUTS OUTPUTS SELECT TC9273N (IC703) SN74LV14APW (IC829) MM74HCT00MT (IC814-815) B4 A4 Y4 B3 A3 Y3 A1 B1 Y1 A2 B2 Y2 GND...
  • Page 22 AVR-1906 / AVR-786 / AVC-1620 2. FL DISPLAY 16-ST-82GNK (FL301) TUNED STEREO PHONO TUNER DVD / AUTO -2 -3 V.AUX TAPE ZONE2 PRO LOGIC DIGITAL DIGITAL ANALOG G2~G16 G12 G10 DVD / VDP TV TUNED STEREO PHONO TUNER / DBS AUTO -2 -3 V.AUX...
  • Page 23 AVR-1906 / AVR-786 / AVC-1620 PRINTED WIRING BOARDS MAIN P.W.B. UNIT COMPONENT SIDE...
  • Page 24 AVR-1906 / AVR-786 / AVC-1620 CPU / FRONT P.W.B. UNIT (1/2) COMPONENT SIDE...
  • Page 25 AVR-1906 / AVR-786 / AVC-1620 CPU / FRONT P.W.B. UNIT (2/2) FOIL SIDE...

  • Page 26: Cnt P.w.b. Unit

    AVR-1906 / AVR-786 / AVC-1620 CNT P.W.B. UNIT (1/2) COMPONENT SIDE...
  • Page 27 AVR-1906 / AVR-786 / AVC-1620 CNT P.W.B. UNIT (2/2) FOIL SIDE...

  • Page 28: Input-Vol P.w.b. Unit

    AVR-1906 / AVR-786 / AVC-1620 INPUT-VOL P.W.B. UNIT (1/2) COMPONENT SIDE...
  • Page 29 AVR-1906 / AVR-786 / AVC-1620 INPUT-VOL P.W.B. UNIT (2/2) FOIL SIDE...
  • Page 30 AVR-1906 / AVR-786 / AVC-1620 INPUT-VOL-E3 P.W.B. UNIT (1/2) ( E3 Model only) COMPONENT SIDE...
  • Page 31 AVR-1906 / AVR-786 / AVC-1620 INPUT-VOL-E3 P.W.B. UNIT (2/2) ( E3 Model only) FOIL SIDE...

  • Page 32: Dsp P.w.b. Unit

    AVR-1906 / AVR-786 / AVC-1620 DSP P.W.B. UNIT (1/2) COMPONENT SIDE...
  • Page 33 AVR-1906 / AVR-786 / AVC-1620 DSP P.W.B. UNIT (2/2) COMPONENT SIDE FOIL SIDE...
  • Page 34 AVR-1906 / AVR-786 / AVC-1620 COMP/EXT-IN P.W.B. UNIT (1/2) COMPONENT SIDE...
  • Page 35 AVR-1906 / AVR-786 / AVC-1620 COMP/EXT-IN P.W.B. UNIT (2/2) FOIL SIDE...
  • Page 36 AVR-1906 / AVR-786 / AVC-1620 COMP P.W.B. UNIT (1/2) COMPONENT SIDE...
  • Page 37 AVR-1906 / AVR-786 / AVC-1620 COMP P.W.B. UNIT (2/2) FOIL SIDE...
  • Page 38 AVR-1906 / AVR-786 / AVC-1620 D-VIDEO P.W.B. UNIT (1/2) (Japan model only) COMPONENT SIDE...
  • Page 39 AVR-1906 / AVR-786 / AVC-1620 D-VIDEO P.W.B. UNIT (2/2) (Japan model only) FOIL SIDE...

  • Page 40: Note For Parts List

    AVR-1906 / AVR-786 / AVC-1620 NOTE FOR PARTS LIST 部品表について • Part indicated with the mark "nsp" are not always in stock and possibly to １．nsp 印の部品は常時在庫していませんので供給に長時間を要すること take a long period of time for supplying, or in some case supplying of part があります。...

  • Page 41: Parts List Of P.w.b. Unit

    AVR-1906 / AVR-786 / AVC-1620 PARTS LIST OF P.W.B. UNIT ＊本表に記載されている部品は、補修用部品のため製品に使用している部品とは一部、形状、寸法などが異なる場合があります。 ＊ The parts listed below are for maintenance only, might differ from the parts used in the unit in appearances or dimensions. ＊ "nsp" 印の部品は常時在庫していませんので供給に長時間を要することがあります。場合によっては、供給をお断りする場合があります。 ＊ Part indicated with the mark “nsp” 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 42 AVR-1906 / AVR-786 / AVC-1620 Ref. No. Part No. Part Name Remarks Q'ty R105C 00D 963 9006 285 R,FIXED RSD-R1-1WJ-5.6K R105FL 00D 963 9006 285 R,FIXED RSD-R1-1WJ-5.6K R105FR 00D 963 9006 285 R,FIXED RSD-R1-1WJ-5.6K R105SL 00D 963 9006 285 R,FIXED RSD-R1-1WJ-5.6K...
  • Page 43 AVR-1906 / AVR-786 / AVC-1620 Ref. No. Part No. Part Name Remarks Q'ty C102SL 00D 963 0234 205 C,ELECT 10UF-M/50V C102SR 00D 963 0234 205 C,ELECT 10UF-M/50V C103C 00D 963 9003 084 C,CERAMIC 100PF-K/500V C103FL 00D 963 9003 084 C,CERAMIC 100PF-K/500V...
  • Page 44 AVR-1906 / AVR-786 / AVC-1620 Ref. No. Part No. Part Name Remarks Q'ty C903 00D 963 0233 109 C,CERAMIC 0.01UF-Z/50V C904 00D 960 9003 108 C,CERAMIC 0.022UF-Z/25V C905 00D 963 0233 303 C,CERAMIC 0.01UF-M/16V OTHERS PARTS GROUP F102 00D 960 0194 906...
  • Page 45 AVR-1906 / AVR-786 / AVC-1620 CPU/FRONT P.W.B. UNIT ASS'Y Ref. No. Part No. Part Name Remarks Q'ty SEMICONDUCTORS GROUP IC201 00D 262 3540 000 IC M30622MEP IC202 00D 963 0057 602 IC TDA7330BD BKE2,SRE2,E2A IC272 00D 963 0219 301 IC CJ7806...
  • Page 46 AVR-1906 / AVR-786 / AVC-1620 Ref. No. Part No. Part Name Remarks Q'ty C205 00D 963 9004 711 C,CERAMIC 0.1UF-Z/50V C206 00D 963 9005 862 C,ELECT 47UF-M/16V BKE2,SRE2,E2A C207 00D 963 9004 698 C,CERAMIC 0.01UF-K/50V BKE2,SRE2,E2A C208 00D 963 0233 507...
  • Page 47 AVR-1906 / AVR-786 / AVC-1620 Ref. No. Part No. Part Name Remarks Q'ty CP802 00D 963 0087 504 CN.WAFER 19P CP803 00D 963 0111 108 CN.WAFER 14P G301 TER WIRE 80MM/1P L301 00D 960 0128 008 COIL INDUCTOR 100UH L302...
  • Page 48 AVR-1906 / AVR-786 / AVC-1620 CNT P.W.B. UNIT ASS'Y Ref. No. Part No. Part Name Remarks Q'ty SEMICONDUCTORS GROUP IC401 00D 960 0296 105 IC CJ7812F IC551-553 00D 963 0218 807 IC BU4094BCF-E2 D1000-1003 00D 963 0058 407 D,SWITCHING IN4007...
  • Page 49 AVR-1906 / AVR-786 / AVC-1620 Ref. No. Part No. Part Name Remarks Q'ty RESISTORS GROUP R1000A-1000B 00D 963 9006 269 R,FIXED RSD-R1-1WJ-0.22 R104SBL 00D 963 9006 285 R,FIXED RSD-R1-1WJ-5.6K R104SBR 00D 963 9006 285 R,FIXED RSD-R1-1WJ-5.6K R105SBL 00D 963 9006 285 R,FIXED RSD-R1-1WJ-5.6K...
  • Page 50 AVR-1906 / AVR-786 / AVC-1620 Ref. No. Part No. Part Name Remarks Q'ty CAPACITORS GROUP C1000A-1000B 00D 963 0145 006 C,FILM 0.047UF-J/50V C1001 00D 963 0145 006 C,FILM 0.047UF-J/50V C1002 00D 963 0183 301 C,ELECT 4700UF-M/25V C1003 00D 963 0224 804...
  • Page 51 AVR-1906 / AVR-786 / AVC-1620 Ref. No. Part No. Part Name Remarks Q'ty C551 00D 963 9006 117 C,ELECT 2.2UF-M/50V C555-556 00D 963 0233 303 C,CERAMIC 0.01UF-M/16V C557 00D 963 0234 205 C,ELECT 10UF-M/50V C560T-561T 00D 963 0223 601 C,CERAMIC 100PF-J/50V...
  • Page 52 AVR-1906 / AVR-786 / AVC-1620 INPUT-VOL P.W.B. UNIT ASS'Y Ref. No. Part No. Part Name Remarks Q'ty SEMICONDUCTORS GROUP IC601 00D 963 0083 304 IC BA7626F IC602 00D 963 0116 103 IC MM74HC4053MX IC603 00D 963 0116 307 IC LC74781...
  • Page 53 AVR-1906 / AVR-786 / AVC-1620 Ref. No. Part No. Part Name Remarks Q'ty Q913SBR 00D 963 0044 301 SEMI KTC2875B(MB) Q913SL 00D 963 0044 301 SEMI KTC2875B(MB) Q913SR 00D 963 0044 301 SEMI KTC2875B(MB) Q913SW 00D 963 0044 301 SEMI KTC2875B(MB)
  • Page 54 AVR-1906 / AVR-786 / AVC-1620 Ref. No. Part No. Part Name Remarks Q'ty C653 00D 963 9006 560 C,ELECT 47UF-M/35V C660 00D 963 9006 036 C,ELECT 470UF-M/6.3V C664 00D 960 9010 023 C,ELECT 0.47UF-M/50V C680 00D 963 9006 036 C,ELECT 470UF-M/6.3V...
  • Page 55 AVR-1906 / AVR-786 / AVC-1620 Ref. No. Part No. Part Name Remarks Q'ty C781SR 00D 963 0234 001 C,CERAMIC 0.047UF-Z/50V C781SW 00D 963 0234 001 C,CERAMIC 0.047UF-Z/50V C782C 00D 960 9010 010 C,ELECT 4.7UF-M/50V C782FL 00D 963 0234 205 C,ELECT 10UF-M/50V...
  • Page 56 AVR-1906 / AVR-786 / AVC-1620 INPUT-VOL-E3 P.W.B. UNIT ASS'Y(for AVR-1906/786 U.S.A. & Canada model) Ref. No. Part No. Part Name Remarks Q'ty SEMICONDUCTORS GROUP IC601 00D 963 0083 304 IC BA7626F IC602 00D 963 0116 103 IC MM74HC4053MX IC603 00D 963 0116 307...
  • Page 57 AVR-1906 / AVR-786 / AVC-1620 Ref. No. Part No. Part Name Remarks Q'ty R771-772 00D 963 9005 639 R,METAL 100-J,1W R79-792 00D 963 9005 639 R,METAL 100-J,1W CAPACITORS GROUP C1-3 00D 963 9004 708 C,CERAMIC 0.1UF-K/50V C601 00D 963 9006 528...
  • Page 58 AVR-1906 / AVR-786 / AVC-1620 Ref. No. Part No. Part Name Remarks Q'ty C682 00D 963 9004 708 C,CERAMIC 0.1UF-K/50V C683 00D 963 9004 672 C,CERAMIC 680pF-J 50V C684 00D 960 9010 094 C,CERAMIC 0.01UF-Z/50V C685 00D 963 0144 706 C,FILM 0.01UF-J/50V...
  • Page 59 AVR-1906 / AVR-786 / AVC-1620 Ref. No. Part No. Part Name Remarks Q'ty C781SBR 00D 963 0234 001 C,CERAMIC 0.047UF-Z/50V C781SL 00D 963 0234 001 C,CERAMIC 0.047UF-Z/50V C781SR 00D 963 0234 001 C,CERAMIC 0.047UF-Z/50V C781SW 00D 963 0234 001 C,CERAMIC 0.047UF-Z/50V...
  • Page 60 AVR-1906 / AVR-786 / AVC-1620 DSP P.W.B. UNIT ASS'Y Ref. No. Part No. Part Name Remarks Q'ty SEMICONDUCTORS GROUP IC802-803 00D 963 0237 503 IC JSR1165-C IC804 00D 262 3539 008 IC ADSP-21266SKSTZ IC805 00D 262 3541 009 IC LH28F800BJE...
  • Page 61 AVR-1906 / AVR-786 / AVC-1620 Ref. No. Part No. Part Name Remarks Q'ty C823 00D 960 0298 802 C,ELECT 470UF-M/6.3V C824 00D 963 9004 698 C,CERAMIC 0.01UF-K/50V C825 00D 960 9010 010 C,ELECT 4.7UF-M/50V C830 00D 963 9005 901 C,ELECT 470UF-M/10V...
  • Page 62 AVR-1906 / AVR-786 / AVC-1620 Ref. No. Part No. Part Name Remarks Q'ty C880SBR 00D 963 9005 778 C,ELECT 10UF-M/50V C880SL 00D 963 9005 778 C,ELECT 10UF-M/50V C880SR 00D 963 9005 778 C,ELECT 10UF-M/50V C880SW 00D 963 9005 778 C,ELECT 10UF-M/50V...
  • Page 63 AVR-1906 / AVR-786 / AVC-1620 EXT-IN-E3 P.W.B. UNIT ASS'Y (for AVR-1906/786 U.S.A. & Canada model only) Ref. No. Part No. Part Name Remarks Q'ty SEMICONDUCTORS GROUP IC401 00D 960 0296 105 IC CJ7812F IC402 00D 960 0174 104 IC CXA1511M-T4...
  • Page 64 AVR-1906 / AVR-786 / AVC-1620 Ref. No. Part No. Part Name Remarks Q'ty C902 00D 960 9009 911 C,ELECT 100UF-M/10V C903-904 00D 963 9006 117 C,ELECT 2.2UF-M/50V C905 00D 963 0234 205 C,ELECT 10UF-M/50V C906 00D 963 9006 544 C,ELECT 22UF-M/25V...
  • Page 65 AVR-1906 / AVR-786 / AVC-1620 COMP P.W.B. UNIT ASS'Y Ref. No. Part No. Part Name Remarks Q'ty SEMICONDUCTORS GROUP D906-911 00D 963 0219 709 D,SWITCHING 1N4148W Q908-913 00D 963 0245 003 SEMI KRC106S (NF) Q912C 00D 963 0044 301 SEMI KTC2875B(MB)
  • Page 66 AVR-1906 / AVR-786 / AVC-1620 D-VIDEO/PRE-OUT P.W.B. UNIT ASS'Y (for AVC-1620 Japan model only Ref. No. Part No. Part Name Remarks Q'ty SEMICONDUCTORS GROUP IC651 00D 960 0175 200 IC BA7625 IC652-653 00D 963 0083 304 IC BA7626 IC654-655 00D 963 0068 002...

  • Page 67: Exploded View

    AVR-1906 / AVR-786 / AVC-1620 EXPLODED VIEW AVR-1906BKE3 : U.S.A. & Canada model WARNING: Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacturer.  印の部分は安全を維持するために重要 な部品です。従って交換時は必ず指定の 部品を使用してください。...
  • Page 68 AVR-1906 / AVR-786 / AVC-1620 AVR-786SRE3 : U.S.A. & Canada model (AVR-786) WARNING: Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacturer.  印の部分は安全を維持するために重要 な部品です。従って交換時は必ず指定の 部品を使用してください。...
  • Page 69 AVR-1906 / AVR-786 / AVC-1620 AVR-1906BKE2/SPE2/SPE2A/SPE1K : Europe/Asia/Korea model WARNING: Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacturer.  印の部分は安全を維持するために重要 な部品です。従って交換時は必ず指定の 部品を使用してください。...
  • Page 70 AVR-1906 / AVR-786 / AVC-1620 AVR-1906SPEUT : Tiwan R.O.C. model WARNING: Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacturer.  印の部分は安全を維持するために重要 な部品です。従って交換時は必ず指定の 部品を使用してください。...
  • Page 71 AVR-1906 / AVR-786 / AVC-1620 AVC-1620-SP : Japan model WARNING: Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacturer.  印の部分は安全を維持するために重要 な部品です。従って交換時は必ず指定の 部品を使用してください。...

  • Page 72: Parts List Of Exploded View

    AVR-1906 / AVR-786 / AVC-1620 PARTS LIST OF EXPLODED VIEW ＊本表に記載されている部品は、補修用部品のため製品に使用している部品とは一部、形状、寸法などが異なる場合があります。 ＊ The parts listed below are for maintenance only, might differ from the parts used in the unit in appearances or dimensions. ＊ "nsp" 印の部品は常時在庫していませんので供給に長時間を要することがあります。場合によっては、供給をお断りする場合があります。 ＊ Part indicated with the mark “nsp” 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 73 AVR-1906 / AVR-786 / AVC-1620 Ref. No. nsp Part No. Part Name Remarks Q'ty 00D 963 0242 404 COMP PCB ASSY BKE2,SRE2,E2A,EUT,E1K COMP PCB ASSY VIDEO CNT PCB ASSY COMP CNT PCB ASSY 00D 963 0241 900 INPUT-VOL(E3) PCB ASSY...
  • Page 74 AVR-1906 / AVR-786 / AVC-1620 Ref. No. nsp Part No. Part Name Remarks Q'ty 00D 963 0190 501 BUTTON STANDBY SRE3,SRE2 00D 963 0221 904 BUTTON STANDBY E2A,E1K,EUT,JP 00D 963 0184 009 BUTTON POWER BKE3,BKE2 00D 963 0194 002 BUTTON POWER...
  • Page 75 AVR-1906 / AVR-786 / AVC-1620 Ref. No. nsp Part No. Part Name Remarks Q'ty Screws 00D 963 0018 007 SCREW (+2S 3X8 ZNY/BH) 00D 960 9008 420 SCREW (+2S 3X8 WASHER PI12) 00D 963 0232 702 SCREW (+3S 4X6 ZNY/BH)

  • Page 76: Packing View

    ＊ Part indicated with the mark “nsp” 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. Note: The symbols in the column "Remarks" indicate the following destinations. BKE3 : U.S.A. & Canada model SRE3 : U.S.A. & Canada model (AVR-786) BKE2 : Europe model(Black) SRE2 : Europe model(Silver) E2A : Asia model EUT : Taiwan R.O.C.
  • Page 77 AVR-1906 / AVR-786 / AVC-1620 Ref. No. Part No. Part Name Remarks Q'ty 00D 963 0110 303 COLOR LABEL(SILVER) SRE3/SRE2 00D 963 0230 209 COLOR LABEL(PREMIUM SILVER) E2A/EUT/E1K 00D 963 0160 706 CORD ASSY 00D 321 0038 005 MIC DM-S205 LICENSE (DOLBY/DTS)LABEL SERIAL NO.

  • Page 78: Wiring Diagram

    AVR-1906 / AVR-786 / AVC-1620 WIRING DIAGRAM...

  • Page 79: Note For Schematic Diagram

    AVR-1906 / AVR-786 / AVC-1620 NOTE FOR SCHEMATIC DIAGRAM 配線図について WARNING: ! 印の部品は安全を維持するために重要な部品です。 Parts marked with this symbol ! have critical characteristics. 従って交換時は必ず指定の部品を使用してください。 Use ONLY replacement parts recommended by the manufactur- 注） CAUTION: (1) 指定なき抵抗値は Ω、ｋ は ｋΩ、M は MΩ を示す。...
  • Page 80 AVR-1906 / AVR-786 / AVC-1620 AVR-1906 / AVR-786 / AVC-1620 SCHEMATIC DIAGRAMS (1/15) SIGNAL LINE SCHEMATIC DIAGRAMS (1/15) MAIN BOARD...
  • Page 81 AVR-1906 / AVR-786 / AVC-1620 AVR-1906 / AVR-786 / AVC-1620 SCHEMATIC DIAGRAMS (2/15) SIGNAL LINE SCHEMATIC DIAGRAMS (2/15) PRE-AMP BOARD 2CH-AMP BOARD...
  • Page 82 AVR-1906 / AVR-786 / AVC-1620 AVR-1906 / AVR-786 / AVC-1620 SCHEMATIC DIAGRAMS (3/15) SCHEMATIC DIAGRAMS (3/15) FRONT BOARD FUNCTION BOARD MAIN S/W BOARD H/P BOARD OPT-IN BOARD...
  • Page 83 AVR-1906 / AVR-786 / AVC-1620 AVR-1906 / AVR-786 / AVC-1620 SCHEMATIC DIAGRAMS (4/15) SIGNAL LINE SCHEMATIC DIAGRAMS (4/15) CPU BOARD...
  • Page 84 AVR-1906 / AVR-786 / AVC-1620 AVR-1906 / AVR-786 / AVC-1620 SCHEMATIC DIAGRAMS (5/15) SIGNAL LINE SCHEMATIC DIAGRAMS (5/15) INPUT/VOLUME BOARD...
  • Page 85 AVR-1906 / AVR-786 / AVC-1620 AVR-1906 / AVR-786 / AVC-1620 SCHEMATIC DIAGRAMS (6/15) SCHEMATIC DIAGRAMS (6/15) SIGNAL LINE CNT BOARD (1/2)
  • Page 86 AVR-1906 / AVR-786 / AVC-1620 AVR-1906 / AVR-786 / AVC-1620 SCHEMATIC DIAGRAMS (7/15) SCHEMATIC DIAGRAMS (7/15) CNT BOARD (2/2) 6CH EX-IN BOARD VIDEO-CON UP BOARD VIDEO-CNT DOWN BOARD...
  • Page 87 AVR-1906 / AVR-786 / AVC-1620 AVR-1906 / AVR-786 / AVC-1620 SCHEMATIC DIAGRAMS (8/15) SIGNAL LINE SCHEMATIC DIAGRAMS (8/15) VIDEO BOARD COMPOSITE VIDEO BOARD S-VIDEO BOARD (For E3 MODEL)
  • Page 88 AVR-1906 / AVR-786 / AVC-1620 AVR-1906 / AVR-786 / AVC-1620 SCHEMATIC DIAGRAMS (9/15) SIGNAL LINE SCHEMATIC DIAGRAMS (9/15) VIDEO BOARD COMPOSITE VIDEO BOARD S-VIDEO BOARD (For E2 MODEL)
  • Page 89 AVR-1906 / AVR-786 / AVC-1620 AVR-1906 / AVR-786 / AVC-1620 SCHEMATIC DIAGRAMS (10/15) SIGNAL LINE SCHEMATIC DIAGRAMS (10/15) COMPONENT CONVERSION BOARD (For E3 MODEL)
  • Page 90 AVR-1906 / AVR-786 / AVC-1620 AVR-1906 / AVR-786 / AVC-1620 SCHEMATIC DIAGRAMS (11/15) SIGNAL LINE SCHEMATIC DIAGRAMS (11/15) COMPONENT BOARD MIC BOARD (For E2 MODEL)
  • Page 91 AVR-1906 / AVR-786 / AVC-1620 AVR-1906 / AVR-786 / AVC-1620 SCHEMATIC DIAGRAMS (12/15) SIGNAL LINE SCHEMATIC DIAGRAMS (12/15) D-VIDEO BOARD PRE-OUT BOARD VIDEO-CNT UP BOARD VIDEO-CNT DOWN BOARD (For JP MODEL)
  • Page 92 AVR-1906 / AVR-786 / AVC-1620 AVR-1906 / AVR-786 / AVC-1620 SCHEMATIC DIAGRAMS (13/15) SIGNAL LINE SCHEMATIC DIAGRAMS (13/15) DSP BOARD (1/2)
  • Page 93 AVR-1906 / AVR-786 / AVC-1620 AVR-1906 / AVR-786 / AVC-1620 SCHEMATIC DIAGRAMS (14/15) SIGNAL LINE SCHEMATIC DIAGRAMS (14/15) DSP BOARD (2/2)
  • Page 94 AVR-1906 / AVR-786 / AVC-1620 AVR-1906 / AVR-786 / AVC-1620 SCHEMATIC DIAGRAMS (15/15) SCHEMATIC DIAGRAMS (15/15) TUNER UNIT (For AVR-1906/AVR-786 MODEL)

  • Page 95: Documents For Weee

    AVR-1906 / AVR-786 / AVC-1620 DOCUMENTS FOR WEEE Details of Recycle Parts ＊ You have to remove the parts that marked “WEEE Mark ◆ " when the recycling processing. (Europe model only) WEEE Ref. No. Part Name Material Q'ty Mark...
  • Page 96 AVR-1906 / AVR-786 / AVC-1620 WEEE Ref. No. Part Name Material Q'ty Mark CPU PCB ASSY complex ◆ EXT-IN PCB ASSY complex ◆ INPUT-VOL PCB ASSY complex ◆ DSP PCB ASSY complex ◆ S-C VIDEO PCB ASSY complex ◆ COMP PCB ASSY complex ◆...
  • Page 97 AVR-1906 / AVR-786 / AVC-1620 Exploded view of AVR-1906 (Europe model) You have to remove the parts that marked "WEEE mark " when the recycling processing. (Europe model only)
  • Page 98 AVR-1906 / AVR-786 / AVC-1620 Details of Recycle parts for main transformer(Ref.No.32) MATERIAL Silicon Steel Sheet Steel Polyethylene Terephtalate / Polybuthylene Terephtalate Polyurethane Enameled Copper Wire Polyurethane Enameled Copper Wire PVC Insulated Copper Wire PVC Insulated Copper Wire Thermal Fuse...
  • Page 99 AVR-1906 / AVR-786 / AVC-1620 Details of Recycle parts for sub transformer(Ref.No.82) MATERIAL Silicon Steel Sheet Polyethylene Terephtalate PA66 Polyurethane Enameled Copper Wire Polyurethane Enameled Copper Wire Copper Alloy Copper Alloy Polyester Tape Press Board or Polyester Film Polyester Tape...

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