Denon AVR-1404 Service Manual
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Denon AVR-1404 Service Manual

Av surround receiver
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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-1404/484
AV SURROUND RECEIVER
16-11, YUSHIMA 3-CHOME, BUNKYOU-KU, TOKYO 113-0034 JAPAN
For U.S.A., Canada, Europe,
Asia, China, Taiwan R.O.C.
& Korea model
Ver. 1
X0172V.01 DE/CDM 0306

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  • Page 1: Service Manual

    For U.S.A., Canada, Europe, Asia, China, Taiwan R.O.C. & Korea model Ver. 1 SERVICE MANUAL AVR-1404/484 MODEL AV SURROUND RECEIVER 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.
  • Page 2 AVR-1404/484 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-1404/484 DISASSEMBLY (Follow the procedure below in reverse order when reassembling.) 1. Top Cover (1) Remove 6 screws and 3 screws , detach the Top cover in the arrow direction. Top Cover 2. Front Panel (1) Remove 4 screws and 2 screws (2) Detach the Front Panel in the arrow direction.
  • Page 4 AVR-1404/484 LEVEL DIAGRAMS (1/2) INPUT A/D IN A/D IN D/A OUT SW SUM ELECTRIC BUFFER REV AMP TONE PRE AMP POWER AMP REV AMP VOLUME REV AMP REV AMP DIGITAL SPK OUT CD IN FRONT H/P OUT M62446 MUTE SUM S/W...
  • Page 5 AVR-1404/484 LEVEL DIAGRAMS (2/2) D/A OUT SW SUM ELECTRIC REV AMP PRE AMP REV AMP VOLUME SUB_WOOFER M62446 6CH INPUT SUB WOOFER DSP OUT PRE OUT MUTE MUTE 30dB 20dB 0dBFS 10dB Front D/A Out TO FRONT CH 200mV ref...
  • Page 6 AVR-1404/484 BLOCK DIAGRAM...

  • Page 7: Tuner Section

    AVR-1404/484 ADJUSTMENT Tuner Section 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 Modulation Coupling Type Connect to...

  • Page 8: Audio Section

    AVR-1404/484 Audio Section Idling Current Required measurement equipment : DC Voltmeter 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 9 AVR-1404/484 SEMICONDUCTORS IC’s CXP740096 (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 PF0/AN4 PF1/AN5 PF2/AN6 PF3/AN7 PF4/AN8 CXP740096 Terminal Function Pin No. Pin Name Function 9273 STB...
  • Page 10 AVR-1404/484 Pin No. Pin Name Function RELAY FRONT A FRONT A RELAY RELAY SURR SURROUND RELAY RELAY CNT CENTER RELAY RELAY H/P H/P RELAY RELAY POWER POWER RELAY CNT MUTE CENTER MUTE FRONT MUTE FRONT MUTE VIDEO MUTE VIDEO MUTE...
  • Page 11 AVR-1404/484 Pin No. Pin Name Function 49326 INTREQ CS49326 INTREQ 74HC151 A0 IC832 CONTROL 74HC151 A1 IC832 CONTROL REMOCON REMOTE CONTROL SIGNAL INPUT VDD BACK UP M62446 CE M62446 CONTROL PLL DATA M62446/PLL CONTROL PLL CLK M62446/PLL CONTROL PLL DT IN...
  • Page 12 AVR-1404/484 CS49326-CL (IC812) A0,SCCLK AUDATA2 DATA7,EMAD7,GPIO7 DATA6,EMAD6,GPIO6 DATA5,EMAD5,GPIO5 RESET DATA4,EMAD4,GPIO4 AGND DGND2 FILT1 DATA3,EMAD3,GPIO3 FILT2 CLKSEL DATA2,EMAD2,GPIO2 DATA1,EMAD1,GPIO1 CLKIN DATA0,EMAD0,GPIO0 CMPREQ,LRCLKN2 18 19 20 21 22 CS49326-CL Terminal Function Function Pin Name Digital positive supply DGND1 Digital supply ground AUDATA3, XMT958...
  • Page 13 AVR-1404/484 LC89055W (IC810) LC89055W Terminal Function Pin Name Function DISEL Data input terminal (select input pin of DIN0, DIN1) DOUT Input bi-phase data through output terminal DIN0 Amp built-in coaxial/optical input correspond data input terminal DIN1 Amp built-in coaxial/optical input correspond data input terminal...
  • Page 14 AVR-1404/484 AK4527BVQ (IC813) 44 43 42 41 40 39 38 37 36 35 34 SDOS DZ F2/OVF RIN+ SMUTE RIN– LIN+ BICK AK4527BVQ LRCK LIN– SDTI1 ROUT1 SDTI2 LOUT1 Top View SDTI3 ROUT2 SDTO LOUT2 DAUX ROUT3 LOUT3 12 13 14 15 16 17 18 19 20 21 22...
  • Page 15 AVR-1404/484 LC72131 (IC401) LA1266 (IC402) A M - I F F M - I F F M - I N V c c X O U T X I N P O S T F M - I F Q . D .
  • Page 16 AVR-1404/484 LC75721E (IC301) KIC9164AN (IC221) LC75721E Terminal Function Symbol Function Power terminal +5V Power terminal GND L - S 1 R - S 1 Power terminal FL drive L - S 2 R - S 2 AM 17 Serial data transfer terminal...

  • Page 17: Terminal Function

    AVR-1404/484 SN74LV4040 (IC831) M62446FP (IC231) Terminal Function OUT4 I N P U T S O U T P U T S OUT3 OUTPUT PORT volume OUT2 DATA LATCH OUT1 n o c h a n g e DGND volume SWin...
  • Page 18 AVR-1404/484 TRANSISTORS DTA114ES DTA114EK DTC114TS DTA114YK DTC Series DTA Series DTC114YS DTA144EK DTC144ES DTC114EK DTC114YK DTC144EK FRONT VIEW VIEW 10kohm / W 10kohm / W 10kohm / W 10kohm / W DTA114EK DTC114EK DTA114ES 10kohm / W 10kohm / W DTC114TS 10kohm / W ¾...
  • Page 19 AVR-1404/484 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 DVD / VDP TV / DBS TUNED STEREO PHONO TUNER AUTO -2 -3 V.AUX / TAPE...
  • Page 20 AVR-1404/484 PRINTED WIRING BOARDS MAIN P.W.B. UNIT COMPONENT SIDE...
  • Page 21 AVR-1404/484 FOIL SIDE...
  • Page 22 AVR-1404/484 CPU P.W.B. UNIT COMPONENT SIDE...
  • Page 23 AVR-1404/484 FOIL SIDE...
  • Page 24 AVR-1404/484 CONNECTION P.W.B. UNIT COMPONENT SIDE...
  • Page 25 AVR-1404/484 FOIL SIDE...
  • Page 26 AVR-1404/484 PRE AMP P.W.B. UNIT COMPONENT SIDE FOIL SIDE...
  • Page 27 AVR-1404/484 DSP P.W.B. UNIT 37 48 COMPONENT SIDE FOIL SIDE...
  • Page 28 AVR-1404/484 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. When ordering of part, clearly indicate "1" and "I" (i) to avoid mis- supplying.
  • Page 29 AVR-1404/484 PARTS LIST OF P.W.B. UNIT Note: The symbols in the column "Remarks" indicate the following destinations. E3: U.S.A. & Canada model EU: U.S.A. model (AVR-484) E2: Europe model E2A: Asia model E1C: China model EUT: Taiwan R.O.C. model E1K: Korea model MAIN P.W.B.
  • Page 30 AVR-1404/484 Ref. No. Part No. Part Name Remarks Q'ty R106C 963 9005 464 Metal film 4.7 ohm 1W R106FL,106FR 963 9005 464 Metal film 4.7 ohm 1W R106SL,106SR 963 9005 464 Metal film 4.7 ohm 1W R107C 963 9005 464 Metal film 4.7 ohm 1W...
  • Page 31 AVR-1404/484 Ref. No. Part No. Part Name Remarks Q'ty C107SL,107SR 963 9003 097 Mylar film 0.1uF/250V C131-135 963 9003 097 Mylar film 0.1uF/250V C136,137 963 9006 188 Electrolytic 10000uF/63V C138 960 9009 898 Electrolytic 1uF/50V C141-143 963 0021 900 Mylar film 0.047uF/100V...
  • Page 32 AVR-1404/484 Ref. No. Part No. Part Name Remarks Q'ty CN702 963 0086 709 11P connector base CP101 960 0118 908 2P connector base CP102 960 0123 304 2P connector base CP103 963 0066 208 3P connector base CP104 960 0128 804...
  • Page 33 AVR-1404/484 PRE AMP P.W.B. UNIT ASS'Y Ref. No. Part No. Part Name Remarks Q'ty SEMICONDUCTORS GROUP Q501C 960 0196 603 Transistor KTC2874B Q501FL,501FR 960 0196 603 Transistor KTC2874B Q501SL,501SR 960 0196 603 Transistor KTC2874B Q502C 960 0196 205 Transistor KSA992F...
  • Page 34 AVR-1404/484 Ref. No. Part No. Part Name Remarks Q'ty OTHER PARTS GROUP CN501 963 0085 506 9P connector base CN502-504 963 0085 603 5P connector base CN505 963 0085 700 6P connector base CP554 963 0050 405 14P connector base...
  • Page 35 AVR-1404/484 CNT P.W.B. UNIT ASS'Y Ref. No. Part No. Part Name Remarks Q'ty SEMICONDUCTORS GROUP IC401 963 0043 700 IC LC72131 IC402 963 0043 904 IC LA1266 IC403 963 0044 000 IC LA3401 IC601 960 0180 101 IC LA7952 IC602...
  • Page 36 AVR-1404/484 Ref. No. Part No. Part Name Remarks Q'ty VR403 963 0052 005 Semi fixed resistor 200 kohm CAPACITORS GROUP C341,342 963 9004 546 Ceramic 0.01uF/16V C401,402 963 9004 685 Ceramic chip 1000pF/50V C403 963 9004 737 Ceramic chip 0.022uF/25V...
  • Page 37 AVR-1404/484 Ref. No. Part No. Part Name Remarks Q'ty C463 963 9004 782 Mylar film 0.056uF/100V C464 963 9004 973 Ceramic 3pF/50V C471VT 960 9009 898 Electrolytic 1uF/50V C472VT 963 9004 753 Ceramic chip 0.047uF/50V C481C 963 9004 575 Ceramic chip 100pF/50V...
  • Page 38 AVR-1404/484 Ref. No. Part No. Part Name Remarks Q'ty FE401 960 0187 706 FM tuner FTE4-401TB G401 1P lug wire L=60 BK G901 1P lug wire L=100 BK for E3,EU G901 1P lug wire L=100 BK for E2,E2A,E1C,EUT,E1K L401 963 0052 102...
  • Page 39 AVR-1404/484 CPU P.W.B. UNIT ASS'Y Ref. No. Part No. Part Name Remarks Q'ty SEMICONDUCTORS GROUP IC201 963 0111 001 IC CXP740096-175Q IC202 963 0057 602 IC TDA7330BD for E2,E2A IC221 960 0080 201 IC KIC9164AN IC231 963 0093 608 IC M62446AFP...
  • Page 40 AVR-1404/484 Ref. No. Part No. Part Name Remarks Q'ty ZD335,336 960 0095 500 Zener diode MTZJ5.1B LED301-304 960 0197 204 LED PI5-RD/HL50RDRF4T LED306-309 960 0197 204 LED PI5-RD/HL50RDRF4T RESISTORS GROUP R231,232 963 9005 600 Metal film 100 ohm 1W R271...
  • Page 41 AVR-1404/484 Ref. No. Part No. Part Name Remarks Q'ty C285C 963 9005 914 Electrolytic 4.7uF/50V C285FL,285FR 963 9005 914 Electrolytic 4.7uF/50V C285SL,285SR 963 9005 914 Electrolytic 4.7uF/50V C285SW 963 9005 914 Electrolytic 4.7uF/50V C292C 963 9005 914 Electrolytic 4.7uF/50V C292FL,292FR...
  • Page 42 AVR-1404/484 Ref. No. Part No. Part Name Remarks Q'ty CP601 963 0087 805 11P connector base CP701 963 0087 708 12P connector base CP702 963 0087 805 11P connector base CP801,802 963 0087 902 17P connector base CP803 963 0097 400...
  • Page 43 AVR-1404/484 DSP P.W.B. UNIT ASS'Y Ref. No. Part No. Part Name Remarks Q'ty SEMICONDUCTORS GROUP IC802 269 0186 002 Optical connector GP1FA502RZ IC803 963 0073 903 IC 74VHCU04 IC805,806 963 0043 807 IC BA4510F IC807 963 0073 709 IC M27W201...
  • Page 44 AVR-1404/484 Ref. No. Part No. Part Name Remarks Q'ty C830-832 963 9004 711 Ceramic chip 0.1uF/50V C833 963 9004 656 Ceramic chip 470pF/50V C834 963 9005 778 Electrolytic 10uF/50V C835 960 9009 898 Electrolytic 1uF/50V C836 960 9009 953 Electrolytic 220uF/10V...
  • Page 45 AVR-1404/484 Ref. No. Part No. Part Name Remarks Q'ty C943 963 9005 927 Electrolytic 0.1uF/50V C944 963 9004 698 Ceramic chip 0.01uF/50V C946,947 963 9004 711 Ceramic chip 0.1uF/50V C948 963 9005 778 Electrolytic 10uF/50V C949 963 9005 846 Electrolytic 2.2uF/50V...
  • Page 46 AVR-1404/484 EXPLODED VIEW Parts List WARNING: Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacturer. FOR E3, EU ,EUT FOR E3, EU ,EUT FOR E2, E2A, E1C FOR E3, EU EUT, E1K FOR E2, E2A, E1C...
  • Page 47 AVR-1404/484 PARTS LIST OF EXPLODED VIEW Note: The symbols in the column "Remarks" indicate the following destinations. E3: U.S.A. & Canada model EU: U.S.A. model (AVR-484) E2: Europe model E2A: Asia model E1C: China model EUT: Taiwan R.O.C. model E1K: Korea model Ref.
  • Page 48 AVR-1404/484 Ref. No. Part No. Part Name Remarks Q'ty 963 0093 514 Power button for black model 963 0108 904 Power button for silver model 963 0093 527 Power button for gold model 963 0094 801 3 key button (A)
  • Page 49 AVR-1404/484 Ref. No. Part No. Part Name Remarks Q'ty 960 0184 408 FLT holder 963 0092 609 Trans bracket 963 0053 017 Top cover for black model 963 0109 903 Top cover for silver model 963 0092 502 Top cover...
  • Page 50 AVR-1404/484 PACKING VIEW PARTS LIST OF PACKING & ACCESSORIES Note: The symbols in the column "Remarks" indicate the following destinations. E3: U.S.A. & Canada model EU: U.S.A. model (AVR-484) E2: Europe model E2A: Asia model E1C: China model EUT: Taiwan R.O.C. model E1K: Korea model Ref.
  • Page 51 AVR-1404/484 WIRING DIAGRAM...
  • Page 52 AVR-1404/484 NOTE FOR SCHEMATIC DIAGRAM WARNING: Parts marked with this symbol ! have critical characteristics. Use ONLY replacement parts recommended by the manufactur- CAUTION: Before returning the unit to the customer, make sure you make µ either (1) a leakage current check or (2) a line to chassis resis- tance check.
  • Page 53 AVR-1404/484 SCHEMATIC DIAGRAMS (1/7) OPEN SCHEMATIC DIAGRAMS (1/7) INPUT UNIT SIGNAL LINE C-VIDEO UNIT S-VIDEO UNIT INPUT CNT UNIT...
  • Page 54 AVR-1404/484 SCHEMATIC DIAGRAMS (2/7) SCHEMATIC DIAGRAMS (2/7) SIGNAL LINE DSP UNIT...
  • Page 55 AVR-1404/484 SCHEMATIC DIAGRAMS (3/7) CPU BOARD FROM DSP UNIT FROM INPUT UNIT FROM INPUT UNIT FROM TUNER UNIT FROM TUNER UNIT IC201 CXP740096 TO DSP UNIT RDS only TO DSP UNIT TO CONNECTION UNIT TO FRONT UNIT TO VIDEO UNIT...
  • Page 56 AVR-1404/484 SCHEMATIC DIAGRAMS (4/7) SCHEMATIC DIAGRAMS (4/7) SIGNAL LINE CNT UNIT PRE-AMP UNIT...
  • Page 57 AVR-1404/484 SCHEMATIC DIAGRAMS (5/7) SCHEMATIC DIAGRAMS (5/7) SIGNAL LINE MAIN UNIT...
  • Page 58 AVR-1404/484 SCHEMATIC DIAGRAMS (6/7) FROM CPU BOARD FROM POWER TRANS FRONT BOARD IC301 H/P, S/W BOARD TO MAIN BOARD FROM MAIN BOARD SCHEMATIC DIAGRAMS (6/7) ENCODER BOARD FRONT UNIT ENCODER UNIT H/P & S/W UNIT...
  • Page 59 AVR-1404/484 SCHEMATIC DIAGRAMS (7/7) E2 , E2A E1C , EUT , E1K E2 , E2A E1C , EUT , E1K E2 , E2A E1C , EUT , E1K SCHEMATIC DIAGRAMS (7/7) SIGNAL LINE TUNER UNIT...

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