Onkyo TX-DS474 Service Manual

Onkyo TX-DS474 Manual

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  • Onkyo TX-DS474 | Service Manual - Page 1
    ONKYO ® SERVICE MANUAL TX-DS474 I Ref. No. 3615 AUDIO VIDEO CONTROL RECEIVER MODEL TX-DS474 0.143[1r0 Rft 1 CZ= I II I I I I I O O Black, Silver, and Golden models BMD BMP, BMPT, BMPA, SMP, GMFT BMWT, BMWR, GMWT, GMWR 120V AC, 60Hz 230-240V AC 50Hz 120/220V AC, 50/60Hz SAFETY-RELATED
  • Onkyo TX-DS474 | Service Manual - Page 2
    Rec out (TAPE. VIDEO-2): 200 mV. 2.2 kohms Pre out (SUBWOOFER): I V, 2.2 kohms VIDEO OUT (VIDEO-2, MONITOR): I Vp-p, 75 ohms Phono Overload: 1 10 mV RMS at I kHz, 0.5% T.H.D. Frequency Response: RIAA Deviation: 20 Hz to 30 kHz, ±I dB 20 Hz to 20 kHz, ±0.8 dB Tone Control Bass: Treble: Signal
  • Onkyo TX-DS474 | Service Manual - Page 3
    down VIDEO 1 button, then press SPEAKER A button. 2. After "clear" is displayed, the prest memory and each mode stored in the memory, such as surround, are initialized and will return to the factory settings. 3. Safety-check out (Only U.S.A. model) After correcting the original service problem
  • Onkyo TX-DS474 | Service Manual - Page 4
    MICROPROCESSOR-CONNECTION DIAGRAM MODEL TX-DS474 5 EUROPEAN MODEL ONLY O1001 RDS DECODER 001923 RI R, U7001 REMOTE CONTROL SENSOR 3O •- OVF7V00E3R POWER FAILURE DETECTOR INITlAUZING 4 O7401 4 DIGIIAL 6 SIGNAL 76 PROCESSOR DS P F56O09E58S 26 41 15 K2 E I yE KO AVdd F 35 Av ref ,E
  • Onkyo TX-DS474 | Service Manual - Page 5
    I Detection input terminal for protection circuit 0 Relay control output terminal for POWER 0 Video selector control output terminal 0 Video selector control output terminal 0 Video selector control output terminal 0 Control output terminal for SPEAKER A relay 0 Control output terminal for SPEAKER
  • Onkyo TX-DS474 | Service Manual - Page 6
    BLOCK DIAGRAM TUNER SECTION Antenna terminal FM 750 ANTENNA TANK CIRCUIT AM 01 RF AMP TUNED CIRCUIT 02 IFT MIXER Q4 FM LOCAL OSCILLATOR 0101,0102 FM IF AMP. D O102 only Q3 BUFFER FM +B .41 Q124 FM +B SWITCH 0122,0123 LOW PASS FILTER 8 11 0121 PLL SYNTHESIZER AND CONTROLLER 15
  • Onkyo TX-DS474 | Service Manual - Page 7
    TX-DS474 CAUTION: Replacement of the transistor of mark *, if necessary, must be made from the same beta group (HFE) as the original type. CIRCUIT Socket TONE CONTROL CIRCUIT PC BOARD (NAETC-6492-4A/4B) CIRCUIT NO. PART NPLG-5P588 POWER AMPLIFIER PC BOARD (NAAF-6495-4A/4B) CIRCUIT NO. PART NO
  • Onkyo TX-DS474 | Service Manual - Page 8
    PARTS LIST MODEL TX-DS474 NS : No Spare Part DISPLAY CIRCUIT PC BOARD (NADIS-6487-3A/3B/3C/3D) CIRCUIT NO. Q7402 22241101R2 LC32464M-80 Remote sensor U7001 241305 GP1U281X Holder Q7004B 27190989 (FL) SURROUND SWITCH PC BOARD (NAAR-6488-3A/3B/3C/3D) CIRCUIT NO. PART NO. DESCRIPTION
  • Onkyo TX-DS474 | Service Manual - Page 9
    EC16B2425,Rotary encoder JL701A 25051087 NSCT-3P874,Sockct TONE CONTROL CIRCUIT PC BOARD (NAETC-6492-3A/3B/3C/3D) CIRCUIT NO. PART NO. DESCRIPTION R391,R392 5104356 N14 RLC100KWT20Z,Variable resistor JL391B 25050271 NSCT-7P99,Socket POWER AMPLIFIER PC BOARD (NAAF-6495-3A/3B/3C/3D
  • Onkyo TX-DS474 | Service Manual - Page 10
    TX-DS474 CIRCUIT NO. PART NO. Sockets JL903B 25050268 JL501B 25050282 JL902A DC12-135 NRL-2P5A-DC20-100 or NRL-2P5A-DC18-138 FRONT CHANNEL POWER AMPLIFIER PC BOARD (NAAF-6496-3A/3B/3C/3D) CIRCUIT NO. PART NO. DESCRIPTION Transistors Q501-O506 2211732, 2SC1845-F, O527,O528 2211733
  • Onkyo TX-DS474 | Service Manual - Page 11
    TX-DS474 NOTE: THE COMPONENTS IDENTIFIDE BY MARK P ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE ONLY WITH PART NUMBER SPECIFIED. CIRCUIT NO. PART NO. Transistor Q4103 2215770, 2213510 or 2214350 Q4204 2213631 or 2213632 Diodes D201,D202 223163 or D3281 223205 D3276,D3277
  • Onkyo TX-DS474 | Service Manual - Page 12
    TX-DS474 TUNER PC BOARD (NARF-6509-3A/3B/3C/3D) CIRCUIT NO. PART NO. DESCRIPTION Front end TU001 240131 ENV172D4G1 -6P98,Socket JL3902B 25050267 NSCT-3P95,Socket NOTE: : 120V model only : European model only : Asian model only : Worldwide model only : Australian model only
  • Onkyo TX-DS474 | Service Manual - Page 13
    fX-DS474 ADJUSTMENT PROCEDURES Preparation 1. Input 2. Outputs FM mono: lkHz,75kHz devi., 60dB/m voltmeter 999kHz 3 400Hz 30% mod. 990kHz 60dB/m AC voltmeter 230V and worldwide models Step AM SG output Tuning Frequency 522kHz 1 or 531kHz Output Indicator Digital DC voltmeter 603kHz
  • Onkyo TX-DS474 | Service Manual - Page 14
    75 O ANT. TERMINAL FM SIGNAL GENERATOR UNIT i TP141 DC VOLTMETER OUTPUT TERMINAL i DISTORSION METER OSCILLOSCOPE Or AC VOLTMETER TX-DS474 STEREO SIGNAL MODULATOR na ANT. TERMINAL 0. FM SIGNAL GENERATOR UNIT OUTPUT TERMINAL • DISTORSION METER 75 0 ANT. TERMINAL FM
  • Onkyo TX-DS474 | Service Manual - Page 15
    TX-DS474 Idling current adjustment Before Idling adjustment, turn the trimming resistors R573 the power switch is turned OFF. 2. Confirmation of DC detection circuit Press and hold down CD button, then press SPEAKERS-MAIN and SPEAKERS-REMOTE buttons at the same time. During "TEST-" on the FL tube
  • Onkyo TX-DS474 | Service Manual - Page 16
    Wv- i -- 3.3k 10k OUTPUT 0.01 g.F GND Differentiator (1 : .1 Speaker terminal Oscilloscope 3l0-Vp-p i IC BLOCK DIAGRAM LC32464M-80 (RAM) RAS 01 CLOCK GENERATOR 1 22 CAS O Y CLOCK GENERATOR 2 MODE CONTROL H AO 0--1-710. Al 0-016 , A2 0-015 , A3 0-1--4 0' A4 0--1-110 , A5 0--100 , A6 0--90
  • Onkyo TX-DS474 | Service Manual - Page 17
    VA+ • CMOUT AGND1 FlLT TX-DS474 Pin No. Symbol I/O Description 1 DATAAUX/RX4 I Auxiliary data input / receiver channel 4 2 HOLD/RUBIT I/O S/PDIF receiver user bit / HOLD control 3 SCL/CCLK I/O Serial control interface clock 4 SDA/CDOUT O Serial control data out 5 ADI/CDIN I Address
  • Onkyo TX-DS474 | Service Manual - Page 18
    P306A 113901A P304 P305 P306 r' 2 Q3901 IL3902B 0390 NAPS6534 P72038 P7401 FL TUBE 1L781A 1L702A P7203A LJ NADG-6489 BAND ll WoIrdwide Model only -32- TX-DS474 FM AM n 171 P101 TU001 RF CD L171 OSC CD 1172 RI41 ltJ L141 telit) L142 R167 NARF-6509 P103 P102 P7001A 57001
  • Onkyo TX-DS474 | Service Manual - Page 19
    DIAGRAM INPUT SELECTOR A CO > L MONO FKAY TOPE 9 LREc Ov0 PT TC921AN-0 10 TC9154 -6dB 6dB 9 VIDEO CHANNEL INPUT OHO c-1N VIDEO-2 LouT E MONITOR OUT VIDE SELECTOR -35 - mICON FL TUBE TX-DS474 / Re-E0 -EP AUDIO -I2v 4 -HI- NAN ARP SIONOCFER Prfaa R Rai POWER POWER SW 44IN -36-
  • Onkyo TX-DS474 | Service Manual - Page 20
    O I n I co P 101 H PIOI 028 77,9 .--. o'S 726 72 5-0 yr 126 0. 161 2130,1 60 03 chLi71.1„,&-• A L2 co L2 2. C6 10 103 CO 10 A DT4 C15 3P 0 OK DO RIO CIA 014 0W/ 0.2P 2 00P R5 100 CIO 27P L6 CIA 10 wL, 0.01811 2 2.5P L L6 7 • 2 R14 Rd 301 V. 1 6 L5 Fi 2'• 6 2. 16
  • Onkyo TX-DS474 | Service Manual - Page 21
    A SCHEMATIC DIAGRAM NAAR-6488-x A 7751.262 O41M 7263 26. WOM 7271.272 0:1104g -651 , 06 12572 ?JD 15 4^ 4f O 6 e.n E E 2 2 03151 TC0I O O " VIS E 0415218 545 0243 SY - 43- TX-DS474 C P2044 00 22 40-6497-415/71 P2064 P 024 • 0 00 ARE -0509-1 (2/7 000 • 0 22 33,40 IFS 092 0540
  • Onkyo TX-DS474 | Service Manual - Page 22
    SCHEMATIC DIAGRAM CO 22 P808021 - 9. 1181920 0316 10/16 F07/1536 2237 C 9- 4311 IN LEFT 3 VIDEO-I RICH! 371 0 12 1 LEF1 VICE0-2 REC 916X8 0 1305 6303 2 6 08 I LEE 571610211 0306 010124ES 8415218 IPM Detector for OEM MODEL E I E I F I TX-DS474 8661-66813- 13/71 1.0 999909 P305
  • Onkyo TX-DS474 | Service Manual - Page 23
    A SCHEMATIC DIAGRAM NCVD-6497-)7 A 600, 112 °000 V 0: 11 " 6 F '4 1= in B, t. PA 04101 103034113 TX-DS474 G B C ■° E 11-51550 021 9 03111 I-54 m .6260/7 0271 g yF ' 135,25 120 0023 , VIDEO-2 AEC VIDEO-2 PLAY „TT OPee*, , 1235 Im 0210. 001 00611 01021 005109 V2cleo Selector rc
  • Onkyo TX-DS474 | Service Manual - Page 24
    sta 1, K - es 66 IJIll 18 810LT ZIll Z501 9211 Se I 1' / SCRt 918 0222 90003 C22 PIO 00 13 00 03 a 101308 mLq e. .cc/or r_1 1 m 1 1 u 1 SCHEMATIC DIAGRAM
  • Onkyo TX-DS474 | Service Manual - Page 25
    A SCHEMATIC DIAGRAM NAAF-6495 11 le cs 46 101 06. TX-DS474 NAAF-6496 go:LT.30,0 ? o f rev 41 0 Tb 0.41.4.0 111 0511 4,6 25CMCI IQ Az ,13 401 19-05404/1.05404 , • .. 59 ....... 1=4 WO 1,0 11 at 109 DO N c.
  • Onkyo TX-DS474 | Service Manual - Page 26
    EXPLODED VIEW MODEL TX-DS474 U13 U8 4 2 U1 P7001 33 U4 U6 U5 34 32 2 50 64c-t-o- 48 a 2 43 42
  • Onkyo TX-DS474 | Service Manual - Page 27
    37 38 14 45 45 14 7 a U3 20 F922 F911 F933 U12 W model only >$ P/W MODELS E811 Q1513 Ulf U22 Q3903 U14 U24 U26 5 24 27 18 A 3901 D910 Q3902 Q526 -17 35 36 U18 T901 U21 U2 6 U19 ea 12
  • Onkyo TX-DS474 | Service Manual - Page 28
    DESCRIPTION NOTE: : Black model only Rear panel : Silver model only Rear panel : Golden model only Rear panel : 120V model only Rear panel : European model only Rear panel : Worldwide model only Rear panel : Asian model only W3*10F(BC
  • Onkyo TX-DS474 | Service Manual - Page 29
    U6 1A801592-3A NAETC-6492-3A,Tone control circuit PC board ass'y 1A801592-3B NAETC-6492-3B,Tone control circuit PC board ass'y 1A801592-3C NAETC-6492-3C,Tone control circuit PC board ass'y 1A801592-3D NAETC-6492-3D,Tone control circuit PC board ass'y U8 1A801594-3A NAETC
  • Onkyo TX-DS474 | Service Manual - Page 30
    PACKING VIEW MODEL TX-DS474 6 • ii J Bot tan TX-DS474 5 5 4 7 9 REF. NO. 1 2 3 4 5 6 7 9 PART NO. Warranty card Service Station list Instruction manual E Instruction manual GDSW Instruction manual FSI Instruction manual T RC-385S, Remote controller UM-3, Battery
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