Page 1 PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A. PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936 PIONEER CORPORATION 2005 T-ZZK AUG.
Page 2: Safety Information
PIONEER Service Manual. A subscription to, or additional copies Also test with plug reversed of, PIONEER Ser vice Manual may be obtained at a (Using AC adapter Earth nominal charge from PIONEER. plug as required)
Page 3 To protect products from damages or failures during transit, the shipping mode should be set or the shipping screws should be installed before shipment. Please be sure to follow this method especially if it is specified in this manual. VSX-74TXVi...
Page 4: Table Of Contents
4.5 BRIDGE1 and BRIDGE2 ASSYS ......................101 4.6 TRANS SIDE and BRIDGE3 ASSYs ..................... 102 4.7 COMPOSITE V ASSYS ......................... 104 4.8 S-VIDEO ASSY............................105 4.9 COMPONENT&VOL ASSY........................106 4.10 DIGITAL MOTHER ASSY ........................110 4.11 DSP ASSY ............................114 4.12 INTERFACE ASSY ..........................116 VSX-74TXVi...
Page 5: Vsx-74Txvi
7.1.9 HOW TO REWRITE THE DSP FLASH ROM BY PLAYING BACK A CD.........227 7.1.10 HOW TO REWRITE THE FLASH ROMS FOR VARIOUS MICROCOMPUTERS......230 7.1.11 DISASSEMBLY ..........................233 7.1.12 FAILURE DIAGNOSIS OF THE POWER AMP BLOCK ..............242 7.2 PARTS ..............................243 7.2.1 IC..............................243 8. PANEL FACILITIES ............................275 VSX-74TXVi...
Page 6: Specifications
Output (Level/Impedance) ..1 Vp-p/75 Ω Signal-to-Noise Ratio ....65 dB VSX-74TXVi...
Page 7 TV VOL TV CH SELECT DTV INFO MUTE REC STOP MEMORY AUDIO SUBTITLE DISP STATUS SIGNAL SEL SBch STEREO MULTI OPE STANDARD ADV. SURR SHIFT PHASE MCACC S.DIRECT Setup Microphone RECEIVER (for Auto MCACC setup) (APM7006) Remote Control Unit (AXD7409) VSX-74TXVi...
Page 8: Exploded Views And Parts List
Screws adjacent to mark on product are used for disassembly. For the applying amount of lubricants or glue, follow the instructions in this manual. (In the case of no amount instructions, apply as you think it appropriate.) 2.1 PACKING VSX-74TXVi...
Page 9 RHC1023 Front Pad 74 AHA7446 Rear Pad 74 AHA7447 Packing Case See Contrast table (2) (2) CONTRAST TABLE VSX-74TXVi/KUXJ/CA, VSX-74TXVi-S/KUXJC, VSX-72TXV/KUXJ/CA and VSX-72TXV-S/KUXJC are constructed the same except for the following: VSX-74TXVi VSX-74TXVi-S VSX-72TXV VSX-72TXV-S Mark No. Symbol and Description...
Page 10: Exterior
2.2 EXTERIOR Refer to "2.3 CHASSIS SECTION". Refer to "2.6 FRONT PANEL SECTION". VSX-74TXVi...
Page 11 ARW7320 iPod Label ARW7326 Screw See Contrast table (2) Screw See Contrast table (2) (2) CONTRAST TABLE VSX-74TXVi/KUXJ/CA, VSX-74TXVi-S/KUXJC, VSX-72TXV/KUXJ/CA and VSX-72TXV-S/KUXJC are constructed the same except for the following: VSX-74TXVi VSX-74TXVi-S VSX-72TXV VSX-72TXV-S Mark No. Symbol and Description /KUXJ/CA...
Page 12: Chassis Section
2.3 CHASSIS SECTION Refer to "2.5 POWER AMP BLOCK". Refer to "2.4 REAR PANEL SECTION". VSX-74TXVi and VSX-74TXVi-S only VSX-74TXVi and VSX-74TXVi-S only DISPLAY 3202 HEADPHONE CN3551 VSX-74TXVi...
Page 13 Trans. Frame 74 ANG7539 NSP 29 DSP Shield 74 ANG7540 NSP 30 Panel Stay 74 ANG7541 (2) CONTRAST TABLE VSX-74TXVi/KUXJ/CA, VSX-74TXVi-S/KUXJC, VSX-72TXV/KUXJ/CA and VSX-72TXV-S/KUXJC are constructed the same except for the following: VSX-74TXVi VSX-74TXVi-S VSX-72TXV VSX-72TXV-S Mark No. Symbol and Description /KUXJ/CA...
Page 14: Rear Panel Section
2.4 REAR PANEL SECTION INTERFACE CN4320 INTERFACE CN4319 INTERFACE CN4318 INTERFACE CN4317 INTERFACE CN4316 POWER AMP IN CN5603 CN4315 CN4314 CN4324 CN4313 CN4325 INTERFACE CN4312 VSX-74TXVi...
Page 15 • • • • • • • • • • Screw 2.85 x 7 ABA7078 Terminal Screw AKE-031 (2) CONTRAST TABLE VSX-74TXVi/KUXJ/CA, VSX-74TXVi-S/KUXJC, VSX-72TXV/KUXJ/CA and VSX-72TXV-S/KUXJC are constructed the same except for the following: VSX-74TXVi VSX-74TXVi-S VSX-72TXV VSX-72TXV-S Mark No.
Page 16: Power Amp Block
2.5 POWER AMP BLOCK COMPONENT & VOL CN2601 TRANS 2-1 CN4202 TRANS SIDE CN4403 DIGITAL MOTHER CN103 LOCAL SUPPLY J6104 VSX-74TXVi...
Page 17 17P Flexible Cable (J51) ADD7516 PCB Angle 45 ANG7406 NSP 9 HS Angle 74 ANG7542 NSP 10 Heatsink 74 ANH7181 Nyron Rivet AEC7408 Mica Sheet AEC7545 NSP 13 Binder (BK-1) ZCA-BK1 • • • • • Screw 3 x 19 ABA7085 VSX-74TXVi...
Page 18: Front Panel Section
2.6 FRONT PANEL SECTION LOCAL SUPPLY CN6103 TRANS SIDE 4401 INTERFACE CN4301 DIGITAL MOTHER CN101 VSX-74TXVi...
Page 19 Damper Assy (200) AXA7088 NK90FCU Rotary Knob See Contrast table (2) Hinge Button See Contrast table (2) (2) CONTRAST TABLE VSX-74TXVi/KUXJ/CA, VSX-74TXVi-S/KUXJC, VSX-72TXV/KUXJ/CA and VSX-72TXV-S/KUXJC are constructed the same except for the following: VSX-74TXVi VSX-74TXVi-S VSX-72TXV VSX-72TXV-S Mark No. Symbol and Description...
Page 20: Block Diagram And Schematic Diagram
JA302 DIGITAL IN (OPT4) IC306-IC309 Floating 32bit FRONT IN (OPT) IC101 JA307 DIGITALOUT1 (OPT) JA306 DIGITALOUT2 (OPT) IC309 : VSX-74TXVi ONLY XMDT XM radio IC281 VSX-74TXVi ONLY IC6203 & PHONO VSX-72TXV ONLY CN6205 96k/24bit IC951,IC952 IC482 CN6207 (1/2) (VSX-74TXVi ONLY)
Page 21 SACD DIRECT PCM DIRECT * MCACC Multi Channel Acoustic IC552,IC652, IC752,IC852, Calibration System IC952(VSX-74TXVi ONLY) DSP2 MCACC Advanced 192k/24bit PORT SELECTOR PROCESSING IC315,IC316 192k/24bit 24bit or 48bit (Double Precision) 192k/24bit IC201 192k/24bit CN3551 IC551,IC651,IC751,IC851 IC951(VSX-74TXVi ONLY) HEAD PHONE <<TRIM>> <<ANALOG PHANTOM>>...
Page 22: Composite V Block Diagram
3.1.2 COMPOSITE V BLOCK DIAGRAM VSX-74TXVi...
Page 23: S-Video Block Diagram
3.1.3 S-VIDEO BLOCK DIAGRAM VSX-74TXVi...
Page 24: Component &Vol Block Diagram
3.1.4 COMPONENT &VOL BLOCK DIAGRAM VSX-74TXVi...
Page 25: Dsp Block Diagram
3.1.5 DSP BLOCK DIAGRAM VSX-74TXVi...
Page 26: Hdmi & Dvc Block Diagram
3.1.6 HDMI & DVC BLOCK DIAGRAM VSX-74TXVi...
Page 27: Microcomputer Block Diagram
3.1.7 MICROCOMPUTER BLOCK DIAGRAM VSX-74TXVi...
Page 28: Overall Wiring Connection Diagram
3.2 OVERALL WIRING CONNECTION DIAGRAM D15A06-150-2651 6/150 mark found on some DISPLAY ASSY component parts indicates (VSX-74TXVi:AWX8635) *1.5mm the importance of the VOLUME ASSY (VSX-72TXV:AWX8636) safety factor of the part. (AWX8641) Therefore, when replacing, be sure to use parts of identical designation.
Page 29 VH TR ASSY (AWX8649) 1.25mm FFC CONNECTOR(I) (*;1.00mm FFC CONNECTOR) 2.0mm CABLE HOLDER PRIMARY ASSY (*;1.5mm CABLE HOLDER) (AWX8628) SP/PS ASSY 2.0mm WIRE TRAP (VSX-74TXVi:AWX8642) (VSX-72TXV:AWX8644) B*B-PH-K-S PH CONNECTOR CN4004 ADX7460- ANOTHER TYPE CODE SOCKET CN4003 CN2801 ADX7459- ANOTHER TYPE CODE CONNECTOR...
Page 30: Audio & Multi Ch In Assy
R6227 (2/2) AKB7172 (SW) (SW) R6228 CN6209 (1/2) R6229 R6230 C6286 GNDCH (CHASSIS) C6292 (SB) R6231 470p (SB) R6232 CN6209 V+7A (2/2) GNDA L6201 SR OUT JA6201 QTL1013 R6288 V-7A RKN1004 L6209 STBY XKP3077 CN6202 GNDUS GNDU CHASSIS CN4319 VSX-74TXVi...
Page 31 L6208 R6270 GNDA VTL1083 (MR) GNDA V+7A V-7A STBY R6287 (MR) V-7A GNDA (MR) CN6204 XKP3079- (SW) (MR) GNDA GNDA GNDA (SW) L6207 GNDA VTL1083 R6286 STBY GNDA (SB) (SB) GNDA (MIC) GNDA (FVL) (MIC) GNDA (FVL) 6201 VEF1040 VSX-74TXVi...
Page 32: V-Audio Assy
CN6308 (2/2) R6334 L6303 (REC) STBY R6339 C6341 10/50 (REC) CN6309 2.2k (1/2) DVR2 OUT R6340 AKB7172 STBY R6391 2.2k C6342 10/50 L6304 AKB7172 GNDCH (CHASSIS) (at C6352) R6345 (DVR2) (DVR2) R6392 DVR2 IN CN6309 (at C6382) (2/2) R6346 VSX-74TXVi...
Page 33 : AUDIO SIGNAL ROUTE (DVD) (TV) : AUDIO SIGNAL ROUTE (TV) (SAT) : AUDIO SIGNAL ROUTE (SAT) (V1) : AUDIO SIGNAL ROUTE (V1) KP200TA6L (DVR1) CN6301 : AUDIO SIGNAL ROUTE (DVR1) (DVR2) : AUDIO SIGNAL ROUTE (DVR2) GNDU CN4318 VSX-74TXVi...
Page 34: Front-In And Headphone Assys
33/25 C3489 JA3452 (4/5) C3479 R3497 0.01 STBY AKX7019 (FVL) R3483 (FVL) C3483 R3487 C3477 L3457 10/16 STBY R3495 STBY Q3451 HN1C01FU(YGR) L3455 VTL1083 33/25 C3492 C3484 L3456 R3488 C3490 STBY R3484 10/16 JQ JA3452 (5/5) R3496 AKX7019 0.01 VSX-74TXVi...
Page 35 : VIDEO SIGNAL ROUTE (VIDEO 2) FOPT : AUDIO SIGNAL ROUTE (F) FS(C) FV-C (MIC) FS(Y) : AUDIO SIGNAL ROUTE (MIC) FV-Y F(C'Site) : AUDIO SIGNAL ROUTE (SPDIF) L3452 VTL1083 (FVL) R3470 STBY FV-L GNDA FV-R KN3452 VNF1084 GNDCH (CHASSIS) VSX-74TXVi...
Page 36: Bridge1, Bridge2, Trans Side And Bridge3 Assys
: VIDEO SIGNAL ROUTE F(C'Site) L4406 R4406 FS(C) : VIDEO SIGNAL ROUTE FS(C) RYHP L4407 R4407 FS(Y) : VIDEO SIGNAL ROUTE FS(Y) RYCS L4408 R4408 L4409 R4409 GNDST L4410 R4410 V+5.6ST L4411 R4411 RYAC L4412 R4412 L4413 R4413 L:VTL1083x13 R:standby E F G VSX-74TXVi...
Page 37 V+7V V-7V V-7V CN5451 CN5455 52044-1745 XKP3068- (SW) (SW) GNDA GNDA GNDA GNDA GNDA GNDA GNDA GNDA GNDA GNDA (SB) (SB) GNDA GNDA (MIC) (MIC) GNDA GNDA (FVL) (FVL) FV L FV L GNDA GNDA FV R FV R VSX-74TXVi...
Page 38: Composite V Assy
EXCK 33uH R2020 OSCS GOS1 R2019 GNDU ASS1056 14.31818MHZ (C'Site) : VIDEO SIGNAL ROUTE (C'Site) F(C'Site) : VIDEO SIGNAL ROUTE F(C'Site) MR(C'Site) : VIDEO SIGNAL ROUTE MR(C'Site) VC(C'Site) : VIDEO SIGNAL ROUTE VC(C'Site) (OSD) : VIDEO SIGNAL ROUTE (OSD) VSX-74TXVi...
Page 39 No marked Capacitors are CEAT or CKSRYB. Unit: p-pF or µF unless otherwise noted. of identical designation. Rated Voltage: shown as "Capacity(µF)/Voltage(V)", or 50V unless otherwise noted. 3.DIODES No marked Diodes are 1SS355. Parts or parts block marked by "STBY" are standby. VSX-74TXVi...
Page 40: S-Video Assy
Parts or parts block marked by "STBY" are standby. R2221 (L2201) R2229 (L2202) V-56S MRINH R2250 mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts GCS GSV of identical designation. (CHASSIS) CN4316 VSX-74TXVi...
Page 41 R2290 GNDU V-56S S(Y) FS(Y) : VIDEO SIGNAL ROUTE S(Y) : VIDEO SIGNAL ROUTE FS(Y) S(C) VCS(Y) : VIDEO SIGNAL ROUTE S(C) : VIDEO SIGNAL ROUTE VCS(Y) FS(C) VCS(C) : VIDEO SIGNAL ROUTE FS(C) : VIDEO SIGNAL ROUTE VCS(C) VSX-74TXVi...
Page 42: Component & Vol Assy (1/4)
SRIN INCB V-7A GNDA INSBB V+5U SLIN 9 10 11 13 14 GNDA C2664 EXTSBR 100p CH SBRIN GNDA (SB) EXTSBL SBLIN V+7A GNDA V-7A GNDA C2665 (MIC) 100p CH GNDAV (FVL) GNDAV GNDU V-7A CONT CONT GNDA GNDAV VSX-74TXVi...
Page 43 COMPONENT & VOL ASSY (VSX-74TXVi:AWQ7028) (VSX-72TXV:AWQ7030) C2643 C2639 R2645 R2651 FLIN R2641 V+7A VSX-72TXV R2647 R2649 4.7k DOWN MIX SELECT ONLY R2653 D_FL R2643 C2645 CDMIX 4.7k IC2636[INH] IC2634 (1/2) 10/50 C DOWNMIX BA4560RF (1/2) IC2633 BA4560RF XLSSN IC2630[CONT] V-7A...
Page 44: Component & Vol Assy (2/4)
DSPSBR OUTSB MROUTL INSWB DSPSTL GNDA INSRB FRIN INSLB DSPSTR GNDA INCB V+7A FLIN INSBB V+5U GNDA 4 5 6 13 14 V+7A GNDA C2681 100p V+7A V-7A C2682 GNDA V-7A V-7A 100p GNDA GNDAT V-7A (MR) GNDU CONT VSX-74TXVi...
Page 45 COMPONENT & VOL ASSY COMPONENT & VOL ASSY CN5431 (VSX-74TXVi:AWQ7028) (VSX-74TXVi:AWQ7028) (VSX-72TXV:AWQ7030) (VSX-72TXV:AWQ7030) VIPOD V+5_6U V+5U D2519 1SS355 C2623 0.1/16 YB V+5_6U GNDU GNDU VLCLK VLCK Q2640 VLDT2 VLDT2 RT1P241M V+5U VLDT1 Q2639 VLDT1 RT1P241M XLSSN XLSSN Q2635 Q2637 RT1P241M V+5.6U...
Page 46: Component & Vol Assy (3/4)
OSDCS OSDCS STBY OSDRST OSDRT OSDDT OSDDT GNDU MEXST CDT2 MEXDT1 EXPDT MEXCLK MEXCLK EXPCK XMSB MEXOE CINH EXPOE CSW2 MEXST EXPST GNDU CSW1 GNDV GNDV GNDV CMRV L2759 VTL1083 GNDU GNDM GNDM R9759 STBY GNDV GNDM (CHASSIS) CN4314 VSX-74TXVi...
Page 47 : VIDEO SIGNAL ROUTE C1(Y) : VIDEO SIGNAL ROUTE MR(C'Site) COMPONENT & VOL ASSY C1(Cb) F(C'Site) : VIDEO SIGNAL ROUTE F(C'Site) : VIDEO SIGNAL ROUTE C1(Cb) (VSX-74TXVi:AWQ7028) FS(C) C1(Cr) : VIDEO SIGNAL ROUTE C1(Cr) : VIDEO SIGNAL ROUTE FS(C) (VSX-72TXV:AWQ7030) C2(Y)
Page 48: Component & Vol Assy (4/4)
Rated power: 1/16W unless otherwise noted. Tolerance: (J) 5% unless otherwise noted. 2.CAPACITORS Unit: p-pF or µ F unless otherwise noted. Ratings: Capacity(µF)/Voltage(V) unless otherwise noted. Rated Voltage: 50V expect for electrolytic capacitors. Parts or parts block marked by "*" or "STBY" are standby. VSX-74TXVi...
Page 49 COMPONENT & VOL ASSY (VSX-74TXVi:AWQ7028) V+5_6U (VSX-72TXV:AWQ7030) JA2703 L2752 stby (IR IN 2) D2752 R2759 stby (or 12TRG L2753 1SS355 Single) stby GNDU GTRG JA2702 (1/2) L2754 QTL1013 IR OUT L2755 QTL1013 JA2702 (2/2) L2756 QTL1013 IR IN 1 XKN3013...
Page 50: Digital Mother Assy (1/8)
HDMI/DSP DI DHCLK MD13 HDMI/DSP CLK HDRDY5 MD14 HDMI RDY XHRST5 MD15 R105 HDMI RST IEDI5 R106 1394 DI IEDO5 R110 VSX-74TXVi ONLY 1394 DO IECLK5 R111 1394 CLK V+5UM R107 100k SBMUTE R179 1394 RST XSBMU BYTE(L:16bit) XIERST5 CNVSS DRDY5...
Page 51: Digital Mother Assy
CN5703 DIGITAL MOTHER ASSY V+5_6ST VSX-74TXVi:AWP7037 V+5_6S VSX-72TXV:AWP7041 V+5UMIN V+5_6U L102 ATL7002 R162 GNDU TEMP2 (GNDST) V+5UM 232CT 232RX OLDET 232TX Q107 UMB1N (1/2) IPTX (2/2) Q107 UMB1N IPRX CN104 Q105 UMB1N (1/2) BTEM16P-1R Q105 UMB1N i-POD RX i-POD TX...
Page 52: Digital Mother Assy (2/8)
3.14 DIGITAL MOTHER ASSY (2/8) VSX-72TXV ONLY V+3DD V+3DD1 L201 VSX-74TXVi ONLY QTL1013 GNDU R204 R244 99 98 97 96 95 84 83 80 79 78 77 R191 R203 4.7k DQ11 DSP2SSI BUSY2 DQ12 DSP2BUSY DQ13 DQ14 DCLK R202 DQ15...
Page 53 DAX(SP3) R193 stby USB(RST3) R260 R194 stby R990 IC211 CD4094BPW R997 PORT EXPANDER C977 stby (3/4) IC205 C300 stby XDSDDIRECT VSX-74TXVi ONLY D112 stby V+5UM IC205 IC204 (1/4) IC205 (1/4) GNDD GNDU (2/4) TC74VHCT125AFTS1 IC205 UNLK (4/4) DMTD IC204 IC204...
Page 54: Digital Mother Assy (3/8)
2.2k C271 C269 VinL Vccp1i C265 0.1/16 0.1/16 VinR VoutL R267 Vcom VoutR GNDD C268 C266 0.1/16 stby R268 VSX-74TXVi ONLY GUSB XMLINK V+3DD1 XMFS V+3DE5 R295 XXMRST Q281 XMIRQ V+5D V+5DXM1 RT1P441M V+3DE CSEL R287 100k XMRX R289 XMTX...
Page 55 DIGITAL MOTHER ASSY CONT5V VSX-74TXVi:AWP7037 V+3DD1 VSX-72TXV:AWP7041 C215 0.1/16 XIERST XIERST5 V+5US IC206 (2/4) C131 VSX-74TXVi ONLY V+3DD 0.1/16 D114 IECLK1 R411 IECLK5 R176 1SS355 IC207 SRTX (3/4) IECLK2 R412 C218 IC107 stby (1/4) IEDI1 R413 0.1/16 IEDI5 IC207 IPTX...
Page 56: Digital Mother Assy (4/8)
V+5D V+3DE1 V+3DE DIGITAL OUT 2 L303 L304 L:TX0 QTL1013 QTL1013 R305 R470 H:DAX SN74LVC1G97DCK stby DADLK 0.1/16 STBY DADMK C306 VSX-74TXVi ONLY JA307 AKS7002 (TOTX177L) DIGITAL OUT 1 R306 stby 0.1/16 C307 V+5D 100k R199 GNDD GNDD CN4306 VSX-74TXVi...
Page 57 DIGITAL MOTHER ASSY C333 0.1/16 V+3DE3 V+3DE VSX-74TXVi:AWP7037 C334 470p IC304 VSX-72TXV:AWP7041 R964 L305 SEL3 VSX-74TXVi ONLY L:IEEE QTL1013 H:USB R963 R333 SN74LVC1G97DCK CN303 RKN1063 C335 0.1/16 VSX-74TXVi ONLY C381 0.1/16 470p C336 C382 470p SPDIF IC305 IC317 (SB) R966...
Page 58: Digital Mother Assy (5/8)
XMLK XMLK IC953 3/8, 4/8 (3/4) XMBK R927 R923 XMBK XMFD IC953 (4/4) R928 R924 stby XMFD V+5D V+3DE VSX-74TXVi IC321 NJM2391DL1-33 ONLY V+3DE14 2/8, 4/8 C361 L316 IC210 QTL1013 XTL0 0.1/16 YB C362 IC314 (1/4) GNDD SN74AHC04PW SN74AHC08PW (2/6)
Page 59 DIGITAL MOTHER ASSY V+3DE4 STBY VSX-74TXVi:AWP7037 VSX-72TXV:AWP7041 C349 0.1/16 C350 470p IC311 R423 R424 SN74LVC1G97DCK C363 0.1/16 DIRECT C364 470p ADMK DMLK R971 stby ADLK LRCK R972 R998 DSDDIRECT DOLK R973 ADBK MCLK R999 DMBK R975 DOMK ADFD DMFD R976...
Page 60: Digital Mother Assy (6/8)
VSX-72TXV ONLY R499 AKN7041 C377 0.1/16 YB CN305 C378 stby R408 DSD6 R407 DSD5 R406 R404 DSD4 R403 DSD3 R402 R401 DSD2 (DSD) DSD1 DSDCLK DDBD R394 DDSD R393 DDCD R392 DDFD DDLK DDBK VSX-74TXVi ONLY DDMK R391 GNDD VSX-74TXVi...
Page 61 DIGITAL MOTHER ASSY VSX-74TXVi:AWP7037 VSX-72TXV:AWP7041 VSX-74TXVi ONLY R395 (DSD) R400 R405 R410 R415 R420 R425 V+3DE4 V+3DE L307 C347 0.1/16 QTL1013 C348 470p YB XDSDDIRECT DSD6 R399 DSD6 DSD5 R398 DSD5 DSD4 R397 DSD3 DSD4 DSD2 (DSD) DSD3 DSD1 R396...
Page 62: Digital Mother Assy (7/8)
C661 C657 VCOM VCCC V+3A5 DSCK 0.1/16 0.1/16 C660 C656 C,SW 100/10 100/10 L652 QTL1013 (SW) (SW) C979 stby (*)MARKS VSX-74TXVi VSX-72TXV C987 R555,R655 stby 0.1/16 C988 R562,R662 R563,R663 470p stby R564,R664 R556,R656 stby stby R557,R657 D113 GNDA GNDD VSX-74TXVi...
Page 63 DIGITAL MOTHER ASSY V+5AD VSX-74TXVi:AWP7037 VSX-72TXV:AWP7041 V+5AD1 IC482 PCM1803DB VINL MODE1 ADOSR VINR MODE2 VREF1 FMT1 XADPDN VREF2 FMT0 R482 ADOSR R483 AGND SCKI ADMK C489 470p XPDWN ADMK BYPAS DGND ADFD R484 TEST DOUT ADFD R485 LRCK ADBK ADBK...
Page 64: Digital Mother Assy (8/8)
VCCR AGNDL (SB) 0.1/16 AGNDR VOUTL- (SB) VOUTR- VOUTL+ VOUTR+ AGNDC C861 C857 VCOM VCCC V+3A2 0.1/16 0.1/16 (*)MARKS VSX-74TXVi VSX-72TXV C860 C856 R755 stby 100/10 AT 100/10 L852 R762,R763 SBL,SBR stby QTL1013 R764 stby R756,R757 R949 IC951 DSD1791DBR DACS3...
Page 65 10/50 R902 R914 C906 330p BTEM20P-1R CN991 2.2K 1.5K R912 R910 V-12A 3.0K C974 stby VSX-74TXVi ONLY C975 GNDAS stby GNDU : AUDIO SIGNAL ROUTE(F) : AUDIO SIGNAL ROUTE(S) (SB) GNDA : AUDIO SIGNAL ROUTE(C) : AUDIO SIGNAL ROUTE(SB) VSX-74TXVi...
Page 66: Dsp Assy (1/2)
CONT CK78 CK29 CK42 CK28 CK20 CK30 CK41 CK45 CK37 CK27 VDD5 CK21 CK31 CK40 CK44 CK38 CK26 CK22 CK32 CK34 CK35 CK36 CK39 CK43 CK25 CK23 CK33 CK94 CK24 GNDD CN352 CN351 AKP7198- AKP7198- IMSA-9142S-26C IMSA-9142S-26C CN301 CN302 VSX-74TXVi...
Page 67 C157 470p 3.3V C158 1.2V 3.3V GNDD TP904 DT1O1 TP903 R111 DT0O1 TP905 V3A8 DT2O1 TP906 DT3O1 TP908 DSP1 TP107 TC74VHC08FTS1 CK62 R141 IC107 R144 (4/4) R142 R145 IC107 (3/4) R149 IC107 R147 R150 (2/4) R148 (1/4) IC107 3.3V VSX-74TXVi...
Page 68: Dsp Assy (2/2)
V3B5 TC7WHU04FU IC301 TC7WHU04FU L301 IC301 (2/3) QTL1013 R303 (1/3) R301 IC301 TC7WHU04FU (3/3) X301 Q301 VSS1171 UN5212 20MHz GNDD mark found on some component parts should be replaced with same parts (safety regulation authorized) of identical designation. GNDD VSX-74TXVi...
Page 69 EXTAL VDDIO VDDPD GNDPD GNDPP GNDSP VDDPP MCLK2 V1B2 C223 3.3V 1.25V 470p 3.3V C203 C215 470p 1.25V C224 470p C204 C216 3.3V R210 3.3V NOTES: NO INDICATED PARTS IS... CCSRCH****50-T CKSRYB103K50-T CKSRYB104K16-T CEVW101M**-TRB RS1/16S***J-T RAB4C***J-T UNLESS OTHERWISE NOTED VSX-74TXVi...
Page 70: Interface Assy
GNDCV GNDD VCC_OUT GNDCV VCCY_IN VEF1040- VEF1040- VEF1040- GNDCV VCCB_IN (SB) GNDCV GNDD VCCR_IN GNDD SPDIF GNDCV ADX7494 SPDIF V+5D VCCY_OUT V+5D V+5D V+5D GNDCV MTZJ6R3(B) GNDD GNDD VCCB_OUT GNDD GNDD GNDCV V+12UN V+12UN VCCR_OUT V+12UN CN4311 GNDCV AKP7203-A VSX-74TXVi...
Page 71 VC(Y) : VIDEO SIGNAL ROUTE F(C'Site) : AUDIO SIGNAL ROUTEV C(Y) GNDCV FS(C) VC(Cb) VCCr OUT : VIDEO SIGNAL ROUTE FS(C) : AUDIO SIGNAL ROUTE VC(Cb) GNDCV FS(Y) VC(Cr) : VIDEO SIGNAL ROUTE FS(Y) : AUDIO SIGNAL ROUTE VC(Cr) VSX-74TXVi...
Page 72: Power Amp In And Power Protect Assys
Q5702 POSI_2 RT1P241M POSI_1 (22k) IC5701 GNDU OL DET BA4560RF-TBB (22k) Q5704 Q5701 Q5705 R5747 (22k) (22k) (22k) OL DET DC DET POSI_2 POSI_2 GNDU POSI_1 CN5702 XKP3065 PROTECTION DETECT NORMAL DETECT LOCK DET OL DET DC DET TEMP1,2 VSX-74TXVi...
Page 73: Power Protect Assy
Rated power: 1/16W unless otherwise noted. -FAN Tolerance: (J) 5% unless otherwise noted. +FAN FAN- 2.CAPACITORS +FAN Unit: p-pF or µF unless otherwise noted. Ratings: Capacity(µF)/Voltage(V) unless otherwise noted. 52044-1745 Rated Voltage: 50V expect for electrolytic capacitors. : AUDIO SIGNAL ROUTE(C) J6104 VSX-74TXVi...
Page 74: Power Amp L Assy
C5205 C5206 KN5063 stby stby (SB) CHASSIS R5201 C5201 R5202 STBY Q5202 4.7/50 C5208 Q5202 4p/200V IMT4 Q5201 ACG7057 2SD2704K IMT4 R5204 Q5205 2SC2705(OY) KM250NA7L CN5003 C5222 stby GAMP C5217 R5231 R5230 R5229 330/10 (1/10W) C5215 C5216 C5227 STBY VSX-74TXVi...
Page 75 ACG7056 R5224 100p/200 0.047 Q5271 ACN7132 (1/4W) STBY C5611 R5292 ACG7056 100p/200 0.047 R5621 (SB) ACN7132 : AUDIO SIGNAL ROUTE(F) : AUDIO SIGNAL ROUTE(SB) IC5601 R5615 STBY SAP17N : AUDIO SIGNAL ROUTE(C) R5613 62 F : AUDIO SIGNAL ROUTE(S) VSX-74TXVi...
Page 76: Power Amp R Assy
C5505 C5506 KN5361 stby stby R5501 C5501 R5502 KN5362 4.7/50 CHASSIS C5508 4p/200V Q5501 ACG7057 2SD2704K R5504 STBY Q5505 2SC2705(OY) C5522 stby C5517 R5531 R5530 R5529 330/10 (1/10W) C5515 C5516 C5527 STBY CN5303 KM250NA7L R5622 : AUDIO SIGNAL ROUTE(C) VSX-74TXVi...
Page 77 IC5501 Q5541 SAP17N 2SA1255(OY) R5543 D5543 1SS355 R5527 CN4006 ACN7121 0.18+0.18 Y4(2/2) (5W+5W) ADX7460 (BROWN) R5544 R5550 IC5502 R5522 SAP17P C5512 R5526 ACG7056 R5524 0.047 100p/200 ACN7132 (0.5W) (1/4W) DC_DET IC5602 SAP17P (0.5W) 0.047 C5612 ACN7132 ACG7056 100p/200 R5592 VSX-74TXVi...
Page 78: Local Supply And Dc/Dc Assys
D6122 1SR154-400 D6123 1SR154-400 GNDA D6127 1SR154-400 D6128 1SR154-400 -18V -12V IC6106 NJM79M12FA V-12A mark found on some component parts indicates the importance of the safety factor of the part. Therefore,when replacing,be sure to use parts of identical designation. VSX-74TXVi...
Page 79 FAN DRIVE DC/DC ASSY FAN STOP (AWX8650) B11B-PH-K-S +13V IC4271 L4271 PQ1CG3032FZ ATH7020- 6102 CN4271 CN4272 47µ STBY DREG D4271 V+5D DREG GNDD DREG V+12UN D3SBA20(B) DREG S3B-EH 51048-0400 52151-0410 4273 C4276 KN4271 STBY C4277 VEF1040-A VNF1084 STBY CHASSIS VSX-74TXVi...
Page 80: Trans2-1, Vh-Tr, Diode And Sp/Ps Assys
Tolerance: (J) 5% unless otherwise noted. D4262 LMF:RD1/2LMF, MUF:RD1/4MUF Q4262 1SR154-400 2.CAPACITORS 2SB1186A(DE) Unit: p-pF or µF unless otherwise noted. Ratings: Capacity(µF)/Voltage(V) unless otherwise noted. Rated Voltage: 50V expect for electrolytic capacitors. VH-TR ASSY MBA:CQMBA, LA:CFTLA U V W (AWX8649) VSX-74TXVi...
Page 81 SP/PS ASSY (VSX-74TXVi:AWX8642) (VSX-72TXV:AWX8644) GAMP Y13:ADX7461-(BLK) +57?V R4014 R4024 R4011 4.7(1/2W) CN4001(1/2) L4011 RY4001 GAMP AKE7075 ATH1053 1.5u -57?V C4012 C4011 CFTLA CFTLA CN4004 C4021 C4022 AKC7008 (RED) CFTLA CFTLA L4021 C4091 STBY XSR3002 ATH1053 1.5u R4031 R4021 C4092 CN4003 STBY 4.7(1/2W)
Page 82: Trans2-2, Trans1 And Primary Assys
DREG W.UP AKR7001 AREG H3153 H3154 AKR7001 AC RY AREGG V+5.6ST AKR7001 AREG H3151 H3152 AKR7001 GNDST PF12PG-R42 GNDST CAUTION FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE WITH SAME TYPE AND RATINGS OF FUSE. TRANS1 ASSY TRANS1 ASSY VSX-74TXVi...
Page 83 RKP1751 W3079 L3063 W3080 (XTF3004) W3081 3064 AKP1033 KN3061 R3061 RCN1080 VNF1084 2.2M CHASSIS mark found on some component parts indicates the importance of the safety factor of the part. Therefore,when replacing,be sure to use parts of identical designation. VSX-74TXVi...
Page 84: Volume, Display And Input Select Assys
UMB1N 0.015 LED6 Q3351 Q3310 Q3305 LED5 Q3307 RT1N431M RT1N431M (2/2) RT1N431M Q3354 LED1 UMB1N LED2 D3352 DAN217 R3352 D3356 VSX-74TXVi VSX-72TXV 1SS355 GNDU i-LINK(BLUE) DVC(RED) D3315 R3353 SLR-343BBT(HJKL) SLI-343URW(RST) CD4053BNS-TBB (1/2) Q3355 V+5UH R3305 CN3201 UMH1N VSS1142 52044-2345 5MHz...
Page 85: Display Assy
DISPLAY ASSY (VSX-74TXVi:AWX8635) (VSX-72TXV:AWX8636) FL DISPLAY V3201 AAV7105- ( 3201 FL HOLDER VNF1096-) 52 51 50 49 46 45 30 29 28 27 26 25 24 23 18 17 16 15 13 12 11 3202 51048-0600 VTL1083 GNDU L3301 C3322...
Page 86: Preout & Control Assy
QTL1013 IC2931 C2968 R2976 10/50 V+10V R2933 V-10V R2931 R2934 JA2931 R2932 AKP1213 MAX3232CPW C2939 (NC) Q2931 C2967 R2975 2SC4081(QRS) (DTR) 0.01 D2931 R2937 10/50 (NC) 1SS355 TXD(RD) BUSY(CTS) RXD(TD) R2939 (DSR) (CD) 232C XKP3082 CN2802 GNDV GNDCH CN4320 VSX-74TXVi...
Page 87 DOCK TX DOCK RX USB/DGND (IP) AUDIO L R2971 AUDIO R C2955 R2969 C2961 GNDA 10/50 R2953 GNDA 4.7K 10/50 AT SHELL R2965 (IP) ACC PWR 4.7K IC2932 (1/2) BA4560RF-TBB GNDV GND ISOLATOR iP-VIDEO GNDA GNDU GNDV GNDCH GNDCH VSX-74TXVi...
Page 88: 1394 Assy (1/2)
VSS1179 C110 RXD2 2XOE 6.14MHz CTS2 R144 TXD0 R140 3XOE IC103 R145 4.7k R104 DTR2 CTS0 4.7k TXD2 CTS2 D101 R108 R146 R141 STBY IC104 4.7k VOUT TP115 PST9245 SN74LV125APW C107 Sub:TC74VHC125FTS1 C112 STBY GNDD R142 V+12 XSACDDRCT GNDD VSX-74TXVi...
Page 89 1394 ASSY IMPORTANT PARTS FOR SAFETY VSX-74TXVi:AWK7882 V+5D V+5DI V+3D Indicated in "STBY" parts are STANDBY. CAPACITORS NJM2391DL1-33 Unit : p-pF or µF unless otherwise noted. :CEVW101M16 ATL7002 :CCSRCH :CKSRYB unless otherwise noted. RESISTORS Unit : k-k , M-M or unless otherwise noted.
Page 90: 1394 Assy (2/2)
Unit : p-pF or µF unless otherwise noted. Unit : k-k ,M-M or unless otherwise noted. Ratings : Capacity(µF)/Voltage(V) Rated power : 1/16W unless otherwise noted. unless otherwise noted. Rated Voltage : 50V except for Tolerance : (J) 5% unless otherwise noted. electrolytic capacitors. VSX-74TXVi...
Page 91 1394 ASSY VSX-74TXVi:AWK7882 TP41 V+3DF RCMUTEOUT R454 POWER TP42 IE_CK C413 STBY TP43 IE_RST C425 TP44 STBY IE_DI C424 TP45 R418 R425 IE_DO SELECT R419 STBY TP46 IE_INT R420 STBY IC409 SN74LVC1G126DCK CN401 VKN1426 GNDD IE_INT IE_DO IE_DI IE_RST IE_CK...
Page 92: Hdmi&Dvc Assy (1/2)
R171 Data0+ R1175 R1X1- Data1- STBY GNDD Data1 Shield R1176 L173 R1X1+ V+3RX Data1+ V+5R1 R1177 R1X2- Data2- STBY Data2 Shield R1178 L174 R1X2+ Q172 Data2+ DTC114YUA V+5R1 Q173 GNDD IC172 UM6K1N SN74CBT3306CPW DSDA1 GNDD DSCL1 GNDC GNDC GNDD VSX-74TXVi...
Page 93 38 39 40 41 42 : 1608 Size 68*4 R492 RS1/16S ~ CAPACITOR UM6K1N GNDA GNDD : 2125 Size V+1R8VC GNDD CKSQ** ~ : 1608 Size CCSR** ~ CKSR** ~ R455 R416 68*4 VCOE X401 ASS7067 28.6363M GNDD GNDD VSX-74TXVi...
Page 94: Hdmi&Dvc Assy (2/2)
GNDD COMP1 C706 STBY DAC A C707 DAC B IC701 C708 ADV7172KSTZ VC(Y) VIDEO ENCODER DAC C GNDD DAC D R702 /HSO STBY C709 VC(Cb) DAC E C702 13 14 17 18 19 20 GNDD VC(Cr) GNDD GNDD GNDD VSX-74TXVi...
Page 95 75(F) CY in GND2 VC(Cb) GNDA R815 Cb out Cb OUT C809 75(F) Cb in GND2 VC(Cr) GNDA R816 MUTE2 Cr out Cr OUT C810 75(F) Cr in GND2 GNDA R1003 STBY R801 R1004 REAR SIDE GNDD GNDA GNDD VSX-74TXVi...
Page 96: Pcb Connection Diagram
Symbol In PCB Symbol In Schematic Part Name Diagrams Diagrams C E B Capacitor Connector Transistor B C E SIDE A Transistor with resistor B C E Field effect SIDE B Chip Part P.C.Board transistor Resistor array 3-terminal regulator VSX-74TXVi...
Page 97: Priout&Control Assy
R2881 STBYR R2885 STBYL R2886 R2884 R2882 R2968 R2954 C2958 R2967 R2955 R2953 C2960 C2959 R2961 R2932 C2939 R2935 R2939 D2931 R2936 R2937 R2938 C2940 R2933 Q2931 D2951 C2979 C2978 C2957 C2904 C2903 C2902 CN2802 CN3063 (ANP7539-C) (ANP7539-C) CN4320 VSX-74TXVi...
Page 98: Audio&Multi Ch In Assy
R6239 C6207 C6210 C6270 C6209 C6269 R6228 R6244 C6268 C6212 C6267 R6243 C6211 R6268 R6227 R6230 R6267 C6214 R6246 C6213 R6245 R6229 R6232 R6248 C6292 C6216 C6215 R6247 R6231 C6281 L6201 C6282 C6298 CN6202 CN6202 C6299 (ANP7543-A) (ANP7543-A) CN4319 VSX-74TXVi...
Page 99: V-Audio Assy
IC6301 W6301 C6361 C6350 W6302 C6380 C6359 15.MRVASEL_L GNDA1 GNDA1 20.GNDA1 GNDA1 R6371 W6303 R6372 R6373 W6326 C6351 R6370 R6366 C6381 R6368 C6374 R6363 R6365 C6373 C6376 W6324 W6323 R6367 C6375 CN6301 C6352 C6382 CN6301 CN6301 (ANP7543-A) (ANP7543-A) CN4318 VSX-74TXVi...
Page 100: Head Phone And Front-In Assys
GNDD FOPT FV-C FV-Y FV-R FRONT IN ASS'Y GNDA C3470 FV-L AWX8638 KN3551 W3459 3551 C3462 W3456 KN3452 C3473 C3452 C3472 C3483 W3455 C3484 JA3452 (ANP7540-A) (ANP7540-A) SIDE B SIDE B FRONT-IN ASSY HEAD PHONE ASSY (ANP7540-A) (ANP7540-A) CN3541 VSX-74TXVi...
Page 101: Bridge1 And Bridge2 Assys
OSDDT2 OSDDT2 FV/C 7,EXP/ 7,EXPOE OSDCLK 6,EXPST 6,EXPOE 5,FV 4,GNDV 3,MRV 2,MRGND 10,GNDV 1,MRGND 11,FV/Y 5,EXPST 12,GNDV 4,FRONT V/Y 13,FV CN5441 3,GNDV 14,GNDV 2,FRONT V/C 15,MRV CMKM-P3X 1,GNDV 16,MRGND (ANP7542-A) 17,MRGND SIDE B SIDE B BRIDGE2 ASSY CN5442 (ANP7542-A) VSX-74TXVi...
Page 102: Trans Side And Bridge3 Assys
13.LOCK DET 14.-FAN 15.-FAN 16.+FAN ICT FC AWX8652- 17.+FAN TRANS SIDE A TRANS SIDE ASSY SIDE B TRANS SIDE A AWX8652- 0 1 2 3 4 5 6 7 8 9 BRIDGE3 ASSY SIDE A BRIDGE3 ASS'Y AWX8669- (ANP7543-A) CN5453 VSX-74TXVi...
Page 103: Bridge3 Assy
SIDE A (ANP7541-B) 13,WUP 12,RYAC 11,V+5.6ST 10,GNDST 9,RYB 8,RYCS 7,RYHP 6,RYA 5,V+12V 4,V-12V 3,HPR 2,HPG 1,HPL 1,+FAN AWX8652- 2,-FAN 3,LOCK DET CN4401 TRANS SIDE ASS'Y SIDE B TRANS SIDE ASS'Y AWX8652- (ANP7541-B) BRIDGE3 ASSY SIDE B (ANP7543-A) CN5453 VSX-74TXVi...
Page 104: Composite V Assys
R2019 C2040 C2055 C2047 R2004 IC2002 C2046 C2017 C2045 L2003 C2042 C2044 C2043 R2008 C2086 C2008 C2099 C2093 IC2007 C2039 C2041 IC2006 R2005 SERVICE R2009 R2012 C2009 SERVICE C2095 CN2001 C2089 D2001 C2096 R2006 CN2001 CN2001 (ANP7539-C) (ANP7539-C) CN4317 VSX-74TXVi...
Page 105: S-Video Assy
R2218 SCOUT SCOUT R2217 C2218 SDET SDET R2222 VMUTE VMUTE C2208 MRINH MRINH C2274 R2230 C2273 V+5.6V V+5.6V C2267 C2268 V+5.6V V+5.6V C2272 V-5.6V V-5.6V R2239 R2208 V-5.6V V-5.6V C2295 CN2201 R2207 CN2201 CN2201 C2294 C2280 (ANP7539-C) (ANP7539-C) CN4316 VSX-74TXVi...
Page 106: Component&Vol Assy
GNDFA GNDFA 1.FVR C2467 C2415 R2649 C2643 C2639 C2416 R2645 R2651 R2653 R2641 IC2633 IC2634 C2469 C2472 C2471 R2646 R2652 R2654 R2642 C2640 R2650 C2644 CN2403 C2460 CN2402 CN2505 C2461 CN2402 CN2403 CN2502 CN2505 (ANP7538-B) CN4315 CN4314 CN5451 CN4324 VSX-74TXVi...
Page 107 C2686 C2650 Q2645 C2687 C2652 C2688 IC2637 C2689 Q2631 C2645 C2692 R2660 C2693 C2629 C2628 C2646 IC2635 C2639 Q2642 R2653 R2641 Q2641 IC2633 R2654 R2642 C2640 D2514 D2506 CN2503 CN2506 CN2501 C2627 C2626 CN2503 CN2501 CN2506 CN4313 CN4325 CN4312 VSX-74TXVi...
Page 108 R2674 R2673 C2635 R2670 C2636 R2669 C2681 R2682 R2679 R2680 R2681 C2670 C2682 R2657 C2671 R2658 C2672 C2673 R2643 C2674 C2657 R2655 R2661 R2662 Q2643 C2658 R2656 R2644 R2695 D2510 D2509 D2508 D2502 C2694 D2517 D2518 CN2506 CN2501 CN2503 VSX-74TXVi...
Page 109 C2437 GNDA R2432 GNDA GNDA C2404 R2404 GNDA C2407 GNDFA GNDFA Q2408 1.FVR C2439 Q2407 C2440 R2454 R2453 R2451 C2405 R2452 R2405 2502 R2468 R2408 R2467 R2469 C2408 D2402 D2401 C2659 R2406 C2406 C2409 R2409 CN2505 CN2403 CN2402 (ANP7538-B) VSX-74TXVi...
Page 110: Digital Mother Assy
C211 1.V+5_6U 2.V+5_6U L552 D111 3.GNDU 4.GNDU C995 5.VIPOD R487 6.VIPOD 7.232CDET 8.MICDET IC203 9.SRIN 10.RMC R235 C975 D116 R236 11.SROUT CN102 C974 R237 C991 Q108 CN991 CN104 CN306 CN992 CN102 CN991 CN992 CN104 CN306 CN4302 CN4303 CN4304 CN4305 VSX-74TXVi...
Page 111 R274 R291 R282 R389 R383 R273 R384 R193 L310 R385 R292 C223 R479 IC321 R199 R432 R431 R284 IC203 R260 R278 C379 CN306 C357 R478 CN304 CN201 R480 IC282 C281 CN281 C292 (ANP7537-A) CN306 CN304 CN201 CN4323 CN4306 CN4307 VSX-74TXVi...
Page 112 C214 R308 R223 R309 C308 C978 C287 C288 R307 C983 R276 R221 R212 C984 R213 R290 R224 R195 R475 C285 R192 R474 R288 R226 C291 R297 D282 C371 R287 C372 R289 C373 D281 C282 C293 (ANP7537-A) CN201 CN304 CN306 VSX-74TXVi...
Page 113 R562 R464 R463 C503 R563 R517 R507 C509 R519 R458 R457 R505 R459 R460 R475 0 1 2 3 0 1 2 3 4 5 6 7 8 9 R474 Q481 C994 C996 C993 CN306 CN104 CN992 CN991 CN102 VSX-74TXVi...
Page 114: Dsp Assy
R302 C755 C459 C460 C470 C430 C429 C483 C490 C428 C484 C489 C427 C426 C425 R405 C421 C419 C455 R755 IC408 D752 C423 C424 C454 C416 C413 C420 C422 C456 C414 C418 R441 CN352 C352 C351 (ANP7529-B) CN352 CN302 VSX-74TXVi...
Page 115 SIDE B SIDE B DSP ASSY 0 1 2 3 0 1 2 3 4 5 6 7 8 9 C751 (ANP7529-B) VSX-74TXVi...
Page 116: Interface Assy
4303 W4318 J4301 W4352 WHITE CN4324 CN4313 CN4316 W4312 CN2505 CN2503 V+5_6U W4313 W4314 GNDUP CN4317 CN4314 CN2403 123mm GNDVI W4311 CN4318 W4308 W4307 W4306 GNDUS W4351 CN4319 W4301 V+7A W4302 W4303 GNDA W4304 W4305 GNDUS CN4320 CN4320 CN2802 VSX-74TXVi...
Page 117 W4330 V+12A V-12A 4.V+12T W4327 3.V+12TRG J4308 2.V-5_6V V+12A W4333 1.V+5_6V GNDFA W4325 J4309 V-12A W4329 BLACK C4302 4304 WHITE C4301 CN4325 CN4312 INTERFACE ASS'Y AWX8651- ANP7541-B HEAT RESIST PRE-FLUX CN4325 CN4312 J4309 J4308 (ANP7541-B) CN2501 CN2506 CN6105 CN6106 VSX-74TXVi...
Page 118 V+5AD Q4303 R4325 Q4301 R4304 R4326 ATTENTION V-12A R4327 EN CAS DE REMPLACEMENT DES FUSIBLES IC4301 GNDA GNDA R4328 N'UTILISER QUE LA REFERENCE 49101.6 V+12A V-12A DE CHEZ LITTELFUSE INC. V+12A J4309 GNDF V-12A J4308 CMKM-P3X CN4312 CN4325 (ANP7540-A) VSX-74TXVi...
Page 119 SIDE B CN4305 CN4323 CN4302 CN4306 CN4307 R4320 L4320 R4322 L4322 R4321 L4321 V+5AD C4306 C4308 CN4310 CN4311 C4307 R4327 GNDA V+12A R4328 V-12A V+12A V-12A CN4314 CN4325 CN4313 CN4324 V+5_6U GNDUP GNDVI GNDUS V+7A GNDA GNDUS CN4320 VSX-74TXVi...
Page 120: Power Amp In Assy
UP SIDE W903 W912 CONTACT CMKM-P3X C5601 1.GAMP (ANP7542-A) 7.AGC 3.bb 4.CB 5.bb 5.CE C5607 R5609 4.CB 6.CE 3.CE 7.CE 2.CE 1.CE C5609 R5627 C5641 W915 5604 5604 CN4202 SIDE B SIDE B POWER AMP IN ASSY 5604 (ANP7542-A) CN5603 VSX-74TXVi...
Page 121: Power Protect Assy
7,GNDST 15,RYAC 6,GNDST 16,WUP 5,V+6.5ST 17,HPSW 4,RYAC 3,WUP 2,HPSW 1,WATTS CN5701 CN5702 (ANP7542-A) CN5002 CN5302 SIDE B SIDE B POWER PROTECT ASSY CMKM-P3X NO CONTACT SIDE NO CONTACT SIDE AWX8658 POWER PROTECT ASSY AWX8659 AWX8660 CN5706 (ANP7542-A) CN5701 CN5702 VSX-74TXVi...
Page 122: Power Amp L And Power Amp R Assys
Q5405 Q5305 W724 W727 C5407 C5307 C5317 C5417 CN5302 1,NC C5401 C5301 2,NC 3,WT 4,OL DET C5421 5,DC DET 6,POSI_2 7,POSI_2 8,GNDU POSI_1R 9,POSI_1 10,NC 8656 8657 11,NC NO NEED SCREW W8659 W5399 W8656 8656 W5398 W8657 8657 (ANP7542-A) VSX-74TXVi...
Page 123 W751 W757 C5351 CN5303 W750 BROWN 1,CE 2,CE C5523 R5351 3,CE C5352 W729 4,CB C5524 C5324 W728 W733 BLACK 5,bb W731 Q5305 Q5505 7,AGC W732 C5507 CN5301 C5517 BLUE C5301 C5501 SBMUTE AMUTE AGSBR NO NEED AGRS SCREW CN4101 VSX-74TXVi...
Page 124 R5522 1,CE 2,CE 3,CE C5504 R5505 C5508 R5506 4,CB R5547 5,bb Q5502 C5365 R5532 R5364 7,AGC R5332 Q5503 C5363 C5516 C5505 C5502 SBMUTE R5530 R5529 R5501 R5301 R5503 AMUTE R5531 C5515 R5504 R5304 Q5501 C5503 C5303 AGSBR AGRS (ANP7542-A) VSX-74TXVi...
Page 125 C5408 Q5441 D5343 R5329 C5316 C5315 C5305 C5402 C5302 R5403 R5330 R5301 R5401 R5430 R5429 R5303 1,NC R5331 C5416 R5304 R5404 C5415 Q5301 Q5401 2,NC R5431 3,WT C5303 C5403 4,OL DET 5,DC DET 6,POSI_2 7,POSI_2 8,GNDU 9,POSI_1 10,NC 11,NC VSX-74TXVi...
Page 126: Local Supply And Dc/Dc Assys
C6117 C6106 J6104 AWX8671 CN6105 C6123 AWX8672 R6102 C6125 C6124 CN6103 W6107 GNDU W6135 1,GNDV 2,GNDV 3,GNDV 4,V+5.6V W6126 5,V-5.6V GNDU 6,V+5.6U 7,GNDU CN6101 8,GNDU CN6106 GNDU W6149 9,V+iPod 10,FANDR 11,FANST 6102 C6101 (ANP7543-A) J4308 DC/DC ASSY CN6106 (ANP7541-B) VSX-74TXVi...
Page 127 C6113 D6123 V-20V D6128 D6104 GNDU D6127 R6104 D6102 R6106 R6101 D6107 D6106 D6105 D6109 1,GNDV 2,GNDV 3,GNDV 4,V+5.6V V-5.6V C6103 GNDU D6108 C6104 5,V-5.6V C6102 6,V+5.6U 7,GNDU 8,GNDU 9,V+iPod 10,FANDR 11,FANST GNDU D6111 D6125 DC/DC ASSY CN6106 (ANP7541-B) VSX-74TXVi...
Page 128: Trans2-1, Vh Tr, Diode And Trans2-2 Assys
IC4201 W4209 EN CAS DE REPLACEMENT DES FUSIBLES IC4201 ET IC4202 N'UTILISER QUE LA REFERENCE 491007 DECHEZ LITTELFUSE INC. TRANS 1 CMKM-P3X ASSY (ANP7541-B) POWER TRANSFORMER TRANS2-2 ASSY (ANP7540-A) J3001 CN6101 U V W Y U V W Y VSX-74TXVi...
Page 129 (ANP7540-A) (ANP7540-A) CN4202 J4201 TRANS2-1 ASSY Q4201 D4201 D4209 D4213 D4203 D4207 D4205 CAUTION REPLACE WITH SAME TYPE NO. 491007 MFD. BY LITTELFUSE INC. FOR IC4201-4202. CMKM-P3X TRANS2-2 ASSY (ANP7540-A) J3001 U V W Y U V W Y VSX-74TXVi...
Page 130: Sp/Ps Assy
R4023 W4021 R4032 WHITE R4013 L4031 RY4002 4101 R4052 CN4102 GAMP GAMP C4041 R4041 R4042 CAUTION REPLACE WITH SAME TYPE NO.ICP-N15 MFD. C4063 BY ROHM CO.,LTD FOR IC4261-4262. CN4002 CN4007 CN4008 R4061 R4062 CMKM-P3X (ANP7541-B) CN4007 CN4008 CN3063 CN3062 VSX-74TXVi...
Page 131 SP/PS ASSY J4009 D4002 D4001 C4092 C4091 D4004 D4010 D4003 D4009 D4006 C4093 D4005 ATTENTION EN CAS DE REMPLACEMENT DES FUSIBLES IC4261 ET IC4262 N'UTILISER QUE LA REFERENCE ICP-N15 DE CHEZ ROHM CO.,LTD. C4095 D4008 D4007 CN4007 CN4008 (ANP7540-A) VSX-74TXVi...
Page 132: Trans1 And Primary Assys
4.19 TRANS1 and PRIMARY ASSYS SIDE A SIDE A PRIMARY ASSY H3061 W3061 H3062 AWX8628 AWX8632 PRIMARY ASS'Y AWX8629 AWX8633 AWX8630 AWX8631 (ANP7540-A) Y14 Y15 TRANS1 ASSY (ANP7540-A) TRANS2-1 ASSY POWER TRANSFORMER Z AA TRANS2-2 ASSY VSX-74TXVi...
Page 133 8 8 8 9 9 9 9 AWX8628 AWX8629 AWX8630 AWX8631 AWX8632 AWX8633 D3065 D3064 R3065 C3065 C3064 C3066 D3062 R3062 8-9.NC R3064 7.GNDST 6.GNDST C3067 5.V+5.6ST 4.AC RY C3071 3.W.UP 1-2.NC D3063 SECONDARY CMKM-P3X (ANP7540-A) TRANS1 ASSY (ANP7540-A) Z AA VSX-74TXVi...
Page 134: Volume, Display And Input Select Assys
W3246 AWX8636 W3245 AWX8661 W3221 W3218 W3212 D3311 D3312 D3313 W3219 W3204 W3202 W3205 W3203 S3201 S3216 S3215 S3211 S3221 S3222 S3223 S3224 S3225 S3204 S3203 S3202 3203 (ANP7540-A) S3214 S3213 S3212 INPUT SELECT ASSY S3565 S3563 S3562 (ANP7540-A) VSX-74TXVi...
Page 135 S3577 S3576 S3575 W3279 L3351 CMKM-P3X D3319 W3267 W3265 W3264 W3269 D3320 W3268 D3315 W3266 S3572 S3573 S3574 W3243 W3248 W3247 W3244 W3246 D3572 W3245 W3221 W3571 W3219 W3209 S3224 S3225 S3226 S3227 Tidak Ada Klik (ANP7540-A) DISPLAY ASSY VSX-74TXVi...
Page 136 VOLUME ASS'Y C3356 6.GNDU 4.GNDU 5.232C DET 5.VENC B 6.VENC A R3351 4.MIC DET 3.SRIN 2.RMC 1.SROUT 1.V+5UH 2.LED7 3.KEY4 4.GNDU R3364 D3353 5.VENC B IC3203 GNDU 6.VENC A D3352 Q3352 R3375 V+5UH Tidak Ada Klik (ANP7540-A) DISPLAY ASSY VSX-74TXVi...
Page 137 4.KEY1 5.KEY2 R3221 6.GNDU GNDU 7.MJOG B V+5UH 8.MJOG A R3375 (ANP7540-A) INPUT SELECT ASSY CMKM-P3X C3561 D3561 1.V+5UH 2.RYAC 3.LED7 4.KEY1 5.KEY2 R3563 R3564 6.GNDU 7.MJOG B 8.MJOG A C3562 R3561 R3562 Q3561 D3563 Q3562 (ANP7540-A) C3564 C3563 VSX-74TXVi...
Page 138: Hdmi&Dvc Assy
C126 C438 X401 R710 R392 C127 R423 R193 C128 R424 R191 C412 C130 C411 C191 C131 R125 C132 C405 R714 R754 R753 R412 R750 R749 R413 R734 R420 C601 C434 C603 C604 C422 C605 C606 C611 L402 C607 (ANP7536-A) VSX-74TXVi...
Page 139 R414 R402 C807 C407 R813 R801 R425 C415 R802 R427 R811 R419 C413 R812 R426 R418 R814 C417 C424 R815 C430 C437 C418 C425 R816 C426 C419 R492 C808 C427 R491 C809 C420 C610 C810 C609 C608 IC602 (ANP7536-A) VSX-74TXVi...
Page 140: 1394 Assy
R452 R419 R357 R433 R420 R304 IC408 R440 R435 R351 R421 R316 R303 C420 R353 R315 R347 R301 R346 R339 R345 R340 R349 C320 C333 CN401 C240 R348 C239 (ANP7489-A) CN402 CN401 CN305 CN303 SIDE B SIDE B (ANP7489-A) VSX-74TXVi...
Page 141: Pcb Parts List
Ex.2 When there are 3 effective digits (such as in high precision metal film resistors). 5.62k Ω 562 x 10 5621 RN1/4PC 5 6 2 1 LIST OF ASSEMBLIES VSX-74TXVi/KUXJ/CA, VSX-72TXV/KUXJ/CA, Mark Symbol and Description VSX-74TXVi-S/KUXJC VSX-72TXV-S/KUXJC 1..POWER AMP ASSY...
Page 142: Secondary Assy
AWX8635 AWX8686 D3315 SLR-343BBT SLI-343URW R3305 RS1/16S391J RS1/16S331J 7 7 7 7 PCB PARTS LIST FOR VSX-74TXVi UNLESS OTHER WISE NOTED Mark No. Description Part No. Mark No. Description Part No. AUDIO & MULTI CH IN ASSY POWER AMP ASSY...
Page 143 C 6283(B,132 ,222 ) CKSRYB104K16 R 6334(B,82 ,128 ) RS1/16S331J C 6284(B,91 ,224 ) CKSRYB103K50 R 6337(B,101 ,127 ) RS1/16S104J C 6285(B,64 ,223 ) CKSRYB103K50 R 6338(B,97 ,127 ) RS1/16S104J C 6286(B,35 ,224 ) CKSRYB104K16 R 6339(B,104 ,128 ) RS1/16S222J VSX-74TXVi...
Page 144 UDZS5R1(B) C 3453(B,30 ,31 ) CCSRCH101J50 D 3452(B,60 ,42 ) DIODE UDZS5R1(B) C 3454(B,45 ,29 ) CCSRCH220J50 D 3453(B,24 ,36 ) DIODE UDZS5R1(B) C 3455(B,44 ,44 ) CCSRCH220J50 D 3454(B,35 ,31 ) DIODE DAN217 C 3457(A,31 ,41 ) CEAT100M50 VSX-74TXVi...
Page 145: Composite V Assy
CN5443(A,69 ,19 ) 13P PLUG XKP3066 R 2006(B,104 ,19 ) RS1/16S750J R 2007(B,104 ,130 ) RS1/16S750J TRANS SIDE ASSY R 2008(B,113 ,62 ) RS1/16S750J R 2009(B,114 ,36 ) RS1/16S750J MISCELLANEOUS R 2010(A,149 ,118 ) RS1/16S0R0J L 4401(B,307 ,6 ) CHIP BEADS VTL1083 VSX-74TXVi...
Page 146 R 2214(B,28 ,133 ) RS1/16S750J C 2039(B,142 ,54 ) CKSRYB473K25 C 2040(B,143 ,74 ) CKSRYB473K25 R 2215(B,28 ,55 ) RS1/16S750J C 2041(B,130 ,57 ) CCSRCH120J50 R 2216(B,28 ,62 ) RS1/16S750J C 2042(B,130 ,62 ) CCSRCH120J50 R 2217(B,28 ,28 ) RS1/16S750J VSX-74TXVi...
Page 147 CKSRYB104K16 C 2206(B,28 ,51 ) CKSRYB104K16 C 2208(B,28 ,24 ) CKSRYB104K16 C 2213(B,28 ,127 ) CCSRCH181J50 COMPONENT&VOL ASSY (VSX-74TXVi) MISCELLANEOUS C 2214(B,28 ,131 ) CCSRCH181J50 C 2215(B,28 ,57 ) CCSRCH181J50 IC 2401(A,45 ,189 ) MULTIPLEXER(4CH*2) TC74LVX4052FT C 2216(B,28 ,61 )
Page 148 DAP202U R 2468(B,25 ,172 ) RS1/16S750J D 2521(B,138 ,24 ) DIODE DAN202U R 2469(B,23 ,176 ) RS1/16S750J R 2501(B,86 ,104 ) RS1/16S563J D 2751(B,129 ,204 ) DIODE UDZS5R1(B) R 2502(B,86 ,99 ) RS1/16S563J D 2752(A,124 ,214 ) DIODE 1SS355 VSX-74TXVi...
Page 149 R 2560(B,99 ,63 ) RS1/16S104J R 2647(A,52 ,113 ) RS1/16S0R0J R 2561(A,105 ,69 ) RS1/16S472J R 2648(A,37 ,113 ) RS1/16S0R0J R 2562(A,105 ,62 ) RS1/16S472J R 2649(A,51 ,118 ) RS1/16S153J R 2563(B,115 ,70 ) RS1/16S102J R 2650(A,37 ,118 ) RS1/16S153J VSX-74TXVi...
Page 150 C 2411(A,41 ,191 ) CKSRYB103K50 C 2553(A,101 ,71 ) CEAT4R7M50 C 2412(A,41 ,187 ) CKSRYB103K50 C 2554(A,101 ,60 ) CEAT4R7M50 C 2415(A,32 ,191 ) CKSRYB103K50 C 2555(A,96 ,68 ) CKSRYB103K50 C 2416(A,32 ,187 ) CKSRYB103K50 C 2556(A,96 ,64 ) CKSRYB103K50 VSX-74TXVi...
Page 151 IC 2640(A,146 ,112 ) LOGIC IC CD4094BNS C 2655(B,69 ,48 ) CKSRYB103K50 C 2656(B,82 ,54 ) CKSRYB103K50 > Q 2407(B,28 ,196 ) TRANSISTOR 2SC4081 C 2657(B,46 ,32 ) CKSRYB103K50 > Q 2408(B,28 ,183 ) TRANSISTOR 2SA1576A C 2658(B,42 ,32 ) CKSRYB103K50 VSX-74TXVi...
Page 152 JA 2402(A,26 ,231 ) 6P RCA PINJACK XKB3053 JA 2403(A,96 ,231 ) PIN JACK(1P) AKB7175 R 2514(B,115 ,97 ) RS1/16S102J R 2515(B,111 ,104 ) RS1/16S183J JA 2702(A,125 ,231 ) 2P JACK XKN3013 R 2516(B,111 ,99 ) RS1/16S183J KN2701(A,144 ,226 ) SCREW PLATE VNE1948 VSX-74TXVi...
Page 153 R 2574(B,124 ,61 ) RS1/16S104J R 2685(B,23 ,57 ) RS1/16S472J R 2575(B,73 ,38 ) RS1/16S563J R 2686(B,23 ,76 ) RS1/16S472J R 2576(B,73 ,33 ) RS1/16S563J R 2687(B,23 ,59 ) RS1/16S101J R 2577(B,93 ,49 ) RS1/16S202J R 2688(B,23 ,74 ) RS1/16S101J VSX-74TXVi...
Page 154 C 2504(A,101 ,96 ) CEAT4R7M50 C 2590(A,121 ,42 ) CEAT470M25 C 2505(A,96 ,104 ) CKSRYB103K50 C 2621(B,147 ,117 ) CKSRYB103K50 C 2506(A,96 ,100 ) CKSRYB103K50 C 2623(B,144 ,75 ) CKSRYB104K16 C 2507(A,107 ,104 ) CKSRYB223K50 C 2626(A,23 ,61 ) CEAT2R2M50 VSX-74TXVi...
Page 155 Q 104 (B,14 ,135 ) CHIP TR (PNP X 2) UMB1N Q 105 (A,23 ,17 ) CHIP TR (PNP X 2) UMB1N DIGITAL MOTHER ASSY (VSX-74TXVi) Q 106 (A,139 ,87 ) TRANSISTOR RT1N241M MISCELLANEOUS Q 107 (A,28 ,17 ) CHIP TR (PNP X 2)
Page 156 R 143 (B,43 ,158 ) RS1/16S473J R 144 (B,40 ,153 ) RS1/16S473J JA 307 (A,15 ,232 ) OPT. LINK OUT AKS7002 X 101 (A,46 ,146 ) CERAMIC RESONATOR XSS3004 R 145 (A,31 ,148 ) RS1/16S101J X 201 (A,114 ,121 ) CERAMIC RESONATOR XSS3004 VSX-74TXVi...
Page 157 R 302 (B,83 ,219 ) RS1/16S101J R 225 (A,127 ,140 ) RS1/16S101J R 303 (B,69 ,219 ) RS1/16S101J R 226 (B,133 ,139 ) RS1/16S101J R 304 (B,56 ,219 ) RS1/16S101J R 227 (A,102 ,133 ) RAB4C101J R 307 (B,127 ,223 ) RS1/16S750J VSX-74TXVi...
Page 158 R 491 (A,83 ,184 ) RS1/16S101J R 410 (B,73 ,75 ) RS1/16S0R0J R 493 (B,87 ,193 ) RS1/16S101J R 411 (B,96 ,129 ) RS1/16S0R0J R 494 (B,85 ,193 ) RS1/16S470J R 413 (B,92 ,129 ) RS1/16S0R0J R 495 (A,85 ,184 ) RS1/16S470J VSX-74TXVi...
Page 159 R 852 (A,49 ,58 ) RS1/16S101J R 655 (A,91 ,55 ) RS1/16S101J R 853 (A,49 ,56 ) RS1/16S101J R 656 (A,106 ,55 ) RS1/16S0R0J R 854 (A,49 ,59 ) RS1/16S0R0J R 657 (A,106 ,53 ) RS1/16S0R0J R 858 (A,64 ,59 ) RS1/16S221J VSX-74TXVi...
Page 160 R 989 (A,67 ,73 ) RS1/16S470J C 222 (A,131 ,93 ) CEAT331M10 R 990 RS1/16S0R0J C 261 (A,51 ,216 ) CEAT470M16 R 992 (A,65 ,85 ) RS1/16S0R0J C 262 (A,50 ,209 ) CKSRYB104K16 R 993 (A,67 ,85 ) RS1/16S470J VSX-74TXVi...
Page 161 C 561 (B,111 ,47 ) CKSRYB104K16 C 354 (A,66 ,94 ) CKSRYB104K16 C 601 (A,106 ,39 ) CKSRYB102K50 C 355 (A,24 ,166 ) CKSRYB104K16 C 602 (A,90 ,39 ) CKSRYB102K50 C 357 (A,144 ,187 ) CKSRYB104K16 C 603 (B,102 ,36 ) CCSRCH331J50 VSX-74TXVi...
Page 162 C 859 (A,49 ,49 ) CKSRYB104K16 IC 210 (A,92 ,150 ) LOGIC IC SN74AHC04PW C 860 (A,48 ,44 ) CEAT101M10 > IC 221 (A,121 ,92 ) IC NJM2391DL1-33 C 861 (B,48 ,47 ) CKSRYB104K16 IC 281 (A,129 ,205 ) XM/DT IC F2602E-01 VSX-74TXVi...
Page 163 L 301 (A,85 ,215 ) CHIP SOLID INDUCTOR QTL1013 R 123 (A,61 ,150 ) RAB4C101J L 303 (A,99 ,208 ) CHIP SOLID INDUCTOR QTL1013 R 124 (A,61 ,155 ) RAB4C101J L 304 (A,93 ,207 ) CHIP SOLID INDUCTOR QTL1013 VSX-74TXVi...
Page 164 R 287 (B,137 ,204 ) RS1/16S104J R 205 (A,109 ,121 ) RS1/16S101J R 288 (B,133 ,204 ) RS1/16S104J R 206 (B,111 ,130 ) RS1/16S101J R 289 (B,137 ,209 ) RS1/16S104J R 207 (B,113 ,130 ) RS1/16S473J R 290 (B,132 ,209 ) RS1/16S104J VSX-74TXVi...
Page 165 R 430 (A,69 ,206 ) RS1/16S473J R 516 (A,114 ,38 ) RS1/16S122J R 431 (A,137 ,161 ) RESISTOR ARRAY RAB4C104J R 517 (B,121 ,31 ) RS1/16S474J R 432 (A,137 ,157 ) RESISTOR ARRAY RAB4C104J R 518 (B,117 ,31 ) RS1/16S474J VSX-74TXVi...
Page 166 R 990 RS1/16S0R0J R 714 (A,69 ,37 ) RS1/16S152J R 992 (A,65 ,85 ) RS1/16S0R0J R 715 (A,83 ,38 ) RS1/16S152J R 993 (A,67 ,85 ) RS1/16S470J R 716 (A,72 ,38 ) RS1/16S152J R 994 (A,59 ,85 ) RS1/16S0R0J VSX-74TXVi...
Page 167 C 455 (A,108 ,75 ) CKSRYB103K50 C 281 (A,145 ,215 ) CEAT470M16 C 456 (A,108 ,78 ) CKSRYB103K50 C 282 (B,140 ,213 ) CKSRYB104K16 C 481 (A,115 ,77 ) CKSRYB103K50 C 283 (A,132 ,213 ) CKSRYB104K16 C 482 (A,123 ,76 ) CKSRYB103K50 VSX-74TXVi...
Page 168 IC 109 (A,40 ,15 ) LOGIC IC SN74AHC1G32DCK C 707 (A,85 ,30 ) CEAT100M50 IC 201 (B,62 ,57 ) DSP IC DSPC56371AF180 C 708 (A,69 ,30 ) CEAT100M50 IC 301 (A,70 ,41 ) LOGIC IC TC7WHU04FU C 709 (B,79 ,26 ) CKSRYB472K50 VSX-74TXVi...
Page 169 C 114 (A,50 ,50 ) CKSRYB104K16 R 144 (B,21 ,58 ) RS1/16S220J C 115 (A,49 ,56 ) CCSRCH471J50 R 145 (B,21 ,61 ) RS1/16S220J C 116 (A,51 ,56 ) CKSRYB104K16 R 147 (B,11 ,65 ) RS1/16S101J C 117 (A,49 ,59 ) CCSRCH471J50 VSX-74TXVi...
Page 170 L 4315(B,128 ,222 ) CHIP BEADS VTL1083 C 176 (A,42 ,18 ) CKSRYB104K16 L 4316(B,126 ,222 ) CHIP BEADS VTL1083 C 178 (B,41 ,30 ) CCSRCH471J50 L 4317(B,124 ,222 ) CHIP BEADS VTL1083 C 179 (B,41 ,31 ) CKSRYB104K16 VSX-74TXVi...
Page 171 R 5623(A,69 ,206 ) CARBON FILM RESISTOR RD1/4MUF4R7J 4301(A,198 ,198 ) 4P CABLE HOLDER 51048-0400 > R 5624(A,56 ,217 ) CARBON FILM RESISTOR RD1/4MUF4R7J > R 5627(A,20 ,225 ) RESISTOR (0.18, 5W) ACN7121 Y 17 AWG14 BOARD IN ADX7493 VSX-74TXVi...
Page 172 1SS355 R 5715(B,8 ,166 ) RS1/16S473J D 5142(B,96 ,187 ) DIODE 1SS355 R 5716(B,13 ,166 ) RS1/16S472J D 5143(B,103 ,205 ) DIODE 1SS355 R 5717(B,19 ,166 ) RS1/16S103J D 5144(B,104 ,182 ) DIODE 1SS355 R 5720(B,21 ,166 ) RS1/16S103J VSX-74TXVi...
Page 173 RS1/16S103J R 5108(B,130 ,194 ) RS1/16S682J R 5250(B,240 ,184 ) RS1/16S103J R 5109(A,133 ,193 ) CARBON FILM RESISTOR RD1/2VM473J > R 5292(B,300 ,156 ) CHIP RESISTOR ACN7132 R 5110(B,141 ,183 ) RS1/16S151J R 5613(B,314 ,153 ) CHIP RESISTOR RS1/16S62R0F VSX-74TXVi...
Page 174 IC 5302(A,157 ,112 ) DARLINGTON POWER IC SAP17P(OY) > IC 5401(A,125 ,112 ) DARLINGTON POWER IC SAP17N(OY) RESISTORS > IC 5402(A,93 ,112 ) DARLINGTON POWER IC SAP17P(OY) R 5301(B,203 ,43 ) RS1/16S102J > IC 5501(A,269 ,112 ) DARLINGTON POWER IC SAP17N(OY) R 5302(B,191 ,42 ) RS1/16S221J VSX-74TXVi...
Page 175 C 5323(A,160 ,63 ) CEAT100M63 R 5441(B,99 ,85 ) RS1/16S473J C 5324(A,191 ,61 ) CEAT100M63 R 5442(B,97 ,85 ) RS1/16S223J C 5332(B,204 ,52 ) CKSRYB224K16 C 5341(A,147 ,62 ) CEANP2R2M50 R 5443(B,101 ,85 ) RS1/16S471J R 5444(B,95 ,85 ) RS1/16S471J VSX-74TXVi...
Page 176 D 6123(B,63 ,39 ) DIODE 1SR154-400 CAPACITORS C 4271(A,67 ,53 ) FILM CAPACITOR CQMBA104J50 D 6124(B,142 ,39 ) CHIP DIODE RB501V-40 C 4272(A,92 ,66 ) ELECT. CAPACITOR CEAT103M16 D 6125(B,149 ,50 ) DIODE 1SS355 C 4273(A,118 ,53 ) ELECT. CAPACITOR CEHAZL102M6R3 VSX-74TXVi...
Page 177 D 4201(B,100 ,140 ) BRIDGE DIODE S1WB(A)60SD D 4203(B,98 ,105 ) DIODE UDZS10(B) SP/PS ASSY D 4204(B,71 ,105 ) DIODE UDZS9R1(B) (VSX-74TXVi) D 4205(B,100 ,105 ) DIODE UDZS9R1(B) MISCELLANEOUS D 4206(B,71 ,102 ) DIODE UDZS8R2(B) Q 4001(B,150 ,72 ) CHIP TRANSISTOR...
Page 178: Volume Assy
AKR7001 H 3160(A,151 ,32 ) FUSE CLIP AKR7001 J 3001(A,138 ,39 ) CONNECTOR ASS'Y PF12PG-R40 DISPLAY ASSY (VSX-74TXVi) MISCELLANEOUS IC 3201(B,131 ,214 ) DISPLAY U-COM PE5503A TRANS1 ASSY IC 3202(A,17 ,221 ) REMOTE RECEIVER UNIT RPM7140-H9 IC 3203(B,171 ,168 ) LOGIC IC CD4053BNS TRANS1 ASSY has no service parts.
Page 179 R 3233(B,170 ,240 ) RS1/16S473J R 3324(B,166 ,211 ) RS1/16S473J R 3234(B,168 ,240 ) RS1/16S473J R 3325(B,149 ,206 ) RS1/16S105J R 3235(B,166 ,240 ) RS1/16S473J R 3327(B,146 ,204 ) RS1/16S104J R 3236(B,164 ,240 ) RS1/16S473J R 3328(B,131 ,193 ) RS1/16S472J VSX-74TXVi...
Page 180 D 2957(A,199 ,89 ) DIODE UDZS6R2(B) C 3245(B,155 ,231 ) CCSRCH471J50 D 2958(A,193 ,84 ) DIODE UDZS6R2(B) C 3246(B,153 ,231 ) CCSRCH471J50 D 2959(A,197 ,89 ) DIODE UDZS6R2(B) C 3247(B,150 ,231 ) CCSRCH471J50 D 2960(A,193 ,86 ) DIODE UDZS6R2(B) VSX-74TXVi...
Page 181 RS1/16S103J R 2870(A,193 ,61 ) RS1/16S103J 1394 ASSY R 2931(A,198 ,121 ) RS1/16S101J MISCELLANEOUS R 2932(B,203 ,115 ) RS1/16S101J > IC 1 (A,42 ,38 ) IC NJM2391DL1-33 R 2933(B,189 ,118 ) RS1/16S101J IC 101 (A,61 ,43 ) MICROCOMPUTER PD5787A VSX-74TXVi...
Page 182 R 235 (B,89 ,47 ) RS1/16S472J R 122 (B,44 ,40 ) RAB4C103J R 236 (A,84 ,42 ) RS1/16S472J R 123 (A,49 ,38 ) RS1/16S101J R 237 (A,84 ,41 ) RS1/16S472J R 124 (A,49 ,33 ) RS1/16S103J R 238 (B,84 ,44 ) RAB4C472J VSX-74TXVi...
Page 183 C 110 (B,69 ,33 ) CKSRYB104K16 C 111 (B,60 ,30 ) CKSRYB103K50 R 340 (A,111 ,17 ) RAB4C470J C 113 (B,58 ,32 ) CKSRYB102K50 R 341 (A,107 ,20 ) RS1/16S470J C 201 (B,104 ,48 ) CKSRYB104K16 R 342 (A,106 ,20 ) RS1/16S470J VSX-74TXVi...
Page 184 Q 912 (B,78 ,30 ) TRANSISTOR RT1N241M C 329 (A,120 ,28 ) ELECT. CAPACITOR DCH1201 Q 913 (B,83 ,30 ) CHIP TRANSISTOR DTC114YUA C 330 (A,120 ,23 ) CKSRYB472K50 D 151 (B,24 ,80 ) DIODE DAN202U C 333 (A,122 ,16 ) CKSRYB104K16 VSX-74TXVi...
Page 185 RS1/16S272J R 131 (A,71 ,55 ) RESISTOR ARRAY RAB4CQ470J R 354 (B,33 ,34 ) RS1/16S272J R 132 (A,71 ,61 ) RS1/16S330J R 355 (A,25 ,15 ) RS1/16S472J R 133 (A,65 ,86 ) RS1/16S103J R 356 (A,31 ,15 ) RS1/16S472J VSX-74TXVi...
Page 186 R 919 (B,80 ,29 ) RS1/16S103J R 542 (A,90 ,50 ) RS1/16S470J R 1001(A,107 ,32 ) RS1/10S0R0J R 543 (A,90 ,53 ) RS1/16S472J R 1002(A,95 ,33 ) RS1/10S100J R 544 (A,90 ,52 ) RS1/16S470J R 1003(A,149 ,26 ) RS1/10S0R0J VSX-74TXVi...
Page 187 C 507 (A,95 ,47 ) CKSRYB104K16 C 192 (A,44 ,82 ) CKSRYB103K50 C 551 (A,91 ,80 ) CKSRYB104K16 C 201 (A,80 ,44 ) CKSRYB104K16 C 552 (A,92 ,55 ) CKSRYB104K16 C 301 (A,57 ,39 ) CKSRYB104K16 C 571 (A,22 ,11 ) CKSRYB104K16 VSX-74TXVi...
Page 188: Adjustment
C 916 (B,75 ,33 ) CKSQYB105K16 C 917 (B,65 ,39 ) CKSRYB104K16 C 918 (A,72 ,33 ) CEVW101M16 C 1001(A,100 ,27 ) CKSRYB104K16 C 1002(A,101 ,31 ) CEVW101M16 • FM/AM TUNER MODULE FM/AM TUNER MODULE has no service parts. VSX-74TXVi...
Page 189: General Information
A55F+A508 Display duration: "TEST MIC OFF" When the keys are pressed again, the previous check KEEP status will be restored. Version indication The version indication will be displayed each A59F+A5D4 (Version indication) (SBchPROCESSING time the keys are pressed. key) VSX-74TXVi...
Page 190 2nd DSP: Flash ROM (IC201) within the DSP IC Normal display [Notes] 1. If the version indication becomes "**," a failure in communications between the corresponding microcomputers or a failure in the corresponding microcomputers is likely. 2. In this submode, the user settings will not be cleared. VSX-74TXVi...
Page 191 When the keys are pressed, the numbers of DC detections, overload detections, detections of cord disconnection (simultaneous detection of DC and OVERLOAD), detections of fan abnormalities, and detections of abnormal temperature are displayed for 3 seconds each, in that order. The maximum value of detections is 255. VSX-74TXVi...
Page 192 : The temperature of the amplifier is then the power will be off. The power can be turned on abnormally high. again in Normal mode. 12V TRG ERR : The 12-V trigger output is short-circuited. [How to enter Test mode] VSX-74TXVi...
Page 193: Protection Circuit Specification
→ Collector of Q5571 and Q5572 are "L". C ch L ch SL ch SBL ch -DC detection: Q5572 emitter is minus to the base. → Collector of Q5571 and Q5572 are "L". POWER AMP L ASSY POWER AMP IN ASSY VSX-74TXVi...
Page 194: Power Protect Assy
Q5704 GNDU OUTPUT L ch GNDU GAMP IC5002 R5044 CN5702 D5343 R ch D5143 SL ch D5443 CN5302 SR ch POWER D5243 SBL ch D5543 AMP R ASSY SBR ch C ch CN5001 CN5601 D5143 POWER AMP IN ASSY VSX-74TXVi...
Page 195: Troubleshooting The Dsp Block
Check the path between them. SRAM IC106 (Pins 9, 27) DSP 3.3V IC101 (Pin 7, etc.) Check the parts and patterns Is the voltage in the path. 3.3V? Check the parts and patterns Is the voltage 3.3V? in the path. VSX-74TXVi...
Page 196 Check the parts and patterns Is the voltage in the path. 3.3V? 2nd Block 1.25V IC355 (Pin 2) Is IC355 Is the voltage abnormally hot? 1.25V? Replace IC355. The output and GND may be short- circuited. Check the path between them. VSX-74TXVi...
Page 197 Check the parts and patterns a bit clock? DIGITAL MOTHER Assy. data coming in the path. IC107 (Pin 1) To Step 5 Is there Check the parts and patterns a bit clock? in the path. R119 Is there Replace IC107. a bit clock? VSX-74TXVi...
Page 198 To Step 6 Are there The 2nd DSP Block is in failure. data coming Proceed to Step 8. CN352 (Pin 12) Are there Check the parts and patterns data coming in the path. Check the paths in the DIGITAL MOTHER Assy. VSX-74TXVi...
Page 199 SPIDS_1 in the path. is "L"? Does the logic become "L" for a moment Check the parts and patterns It is very difficult to diagnose when the input stream in the path. which part is in failure. is changed? VSX-74TXVi...
Page 200 Check the output from the signal output while the DIGITAL MOTHER Assy. voltage at SS_2 is "L"? IC201 (Pin 36) Is the clock Check the parts and patterns signal output while the in the path. voltage at SS_2 is "L"? VSX-74TXVi...
Page 201 DIGITAL CN352 MOTHER Assy 1st DSP 2nd DSP CN351 From 3.3V & 3.3V & GNDD DIGITAL 1.2V 1.25V MOTHER Assy GNDD GNDD Flash ROM SRAMs GNDD 3.3V Logic ICs 3.3V GNDD GNDD CN501, CN502 : Shows internal ground (GNDD) VSX-74TXVi...
Page 202 R433 C205 C206 R133 R132 C217 C218 R431 C479 R430 R435 R503 R110 R107 C179 C353 R429 C478 IC501 IC407 C178 L201 C229 CN401 AWX8599 AWX8600 First HEATPROOF 1.25V REFLOW DSP Ass'y Side (B) PRE-FLUX L P E D VSX-74TXVi...
Page 203: Contents
Digital Video Converting System Input Output HDMI Terminal Component Terminal S Video Terminal Composite Video Terminal Note: Down converting for component signal is limited with contents with macro vision. HDMI Audio Pass Input Output HDMI → HDMI Pre out SP Out VSX-74TXVi...
Page 204 See "3. How to diagnose the product with the Power Amp Block HDMI input then check it at the SP removed" in "7.1.11 DISASSEMBLY." output. Diagnose the unit by referring to the sections on how to diagnose and troubleshoot the HDMI block, described on the subsequent pages. VSX-74TXVi...
Page 205 (*1) Follow the steps described in "3. How to diagnose the product with the Power Amp Block removed" in "7.1.11 Removal of Each Block." After diagnosis, be sure to remove the solder used for short-circuiting. BRIDGE 2 Assy S VIDEO Assy COMPOSITE V Assy State after all the above-mentioned assys have been removed VSX-74TXVi...
Page 206 Connect a cable between the HDMI connector and the chassis. [Tips] • Some of the DVD players that can transmit LPCM (DVD-AUDIO) through HDMI are as follows: Panasonic: DVD-S97 (Domestic model) DENON: DVD-3910 (Domestic model) • Use an HDMI cable with the HDMI logo. VSX-74TXVi...
Page 207 Connect a cable between the composite connector and the chassis. HDMI OUT Connect a cable between the HDMI connector and the chassis. [Tips] In this diagnosis, the DIGITAL VIDEO CONVERSION setting (ON/OFF) in the AV PARAMETER settings is invalid. VSX-74TXVi...
Page 208 HDMI OUT Connect a cable between the HDMI connector and the chassis. Connect a cable between the composite connector and the chassis. [Tips] In this diagnosis, the DIGITAL VIDEO CONVERSION setting (ON/OFF) in the AV PARAMETER settings is invalid. VSX-74TXVi...
Page 209 [Appearance of diagnosing the component video] Connect a cable between the HDMI connector and the chassis. HDMI OUT INTERFACE Assy W4316 (GND) [Tips] In this diagnosis, the DIGITAL VIDEO CONVERSION setting (ON/OFF) in the AV PARAMETER settings is invalid. VSX-74TXVi...
Page 210: Hdmi Troubleshooting
If soldering has not been done 3.3V? run in all the correctly, replace IC903. correctly, replace CN101. lines? C913 (+ side) 1.8V Check the soldering of IC904. Is the voltage If soldering has not been done 1.8V? correctly, replace IC904. VSX-74TXVi...
Page 211 Check the soldering of IC151. If soldering has not been done IC171 (pin 8) correctly, replace IC151. Check the soldering of D171. Is the voltage If soldering has not been done about 5V? correctly, replace D171. Replace IC171 VSX-74TXVi...
Page 212 If soldering has not been done clock and data? correctly, replace IC101. Replace CN301 IC201 (pins 12-18) Check the soldering of IC201. Are there If soldering has not been done clock and data? correctly, replace IC201. Check the INTERFACE Assy and DIGITAL MOTHER Assy. VSX-74TXVi...
Page 213 COMPONENT IN Is there a Check the INTERFACE Assy signal and COMPONENT & VOL Assy. IC601 (pins 14-16) Check the soldering of IC601. Is there a If soldering has not been done signal correctly, replace IC601. To Step 4-2 VSX-74TXVi...
Page 214 If soldering has not been done signal? correctly, replace IC701. CN1002 (pin 22) Check the soldering of IC801. Is there a If soldering has not been done signal? correctly, replace IC801. Check the INTERFACE Assy and COMPOSITE V Assy. VSX-74TXVi...
Page 215 HDMI & DVC Assy Check Points HDMI & DVC ASSY SIDE A VSX-74TXVi...
Page 216: Flowchart Of Connection Diagnosis Of The Hdmi Block
THROUGH. (With THROUGH, no from the display? sound will be output from the speakers connected to the amplifier.) Turn all the connected equipment off then back on. Disconnect then reconnect the HDMI cable. Recheck the settings of the receiver. VSX-74TXVi...
Page 217 HDMI output may not be available. In such a case, connect the analog video output to the display. Turn all the connected equipment off then back on. Disconnect then reconnect the HDMI cable. Recheck the settings of the receiver. VSX-74TXVi...
Page 218 If it is extremely input? distorted, connect the analog video output to the display. Check the settings of the source equipment and the display. Disconnect then reconnect the HDMI cable. Recheck the settings of the receiver. VSX-74TXVi...
Page 219: Diagnosis Of The 1394 Assy
This is displayed on a playback component when PQLS turns on during playback. The sound may be interrupted momentarily when this happens. UNKNOWN When an i.LINK-equipped component name cannot be recognized, this message is displayed instead of the proper component name. VSX-74TXVi...
Page 220 Remove the rivet that secures the 1394 Assy. Remove the 1394 Assy. 1394 Assy ×2 HDMI Shield 1394 Assy iLink cable Connect a cable between the 1394 connector and the chassis. Connect the source equipment (DVD player), using an iLink cable. DVD player VSX-74TXVi...
Page 221 Is the voltage If soldering has not been done 3.3V? correctly, replace IC1. To Step 5 C428 (+ side) 2.5V Check the soldering of IC401. Is the voltage If soldering has not been done 2.5V? correctly, replace IC401. To Step 3 VSX-74TXVi...
Page 222 If soldering has not been done IC405 (pins 12-18) correctly, replace IC409. Check the soldering of IC405. Are there If soldering has not been done clock and data Check the DIGITAL MOTHER Assy. correctly, replace IC405. Check the DIGITAL MOTHER Assy. VSX-74TXVi...
Page 223 1394 Assy Check Points 1394 ASSY SIDE A 1394 ASSY SIDE B VSX-74TXVi...
Page 224: Ipod Information
Update the version of the software for iPod. MONITOR OUT screen FL display i P o d T o p [Cause] T r a c k No music is recorded in the iPod player. [Measures] Transfer music data to the iPod player. VSX-74TXVi...
Page 225 Check the power line (Pin ?) of (If charging starts, it means the iPod connector. the power line is OK.) Is "Pioneer" Check Pins ?-? of the main displayed on the iPod player? (If it is displayed, microcomputer (IC ?).
Page 226: Xm Radio Information
XXX). (With the XM is in failure. It is possible that the audio antenna disconnected, the 5-V Replace the antenna. output is not available with other power is supplied from this unit.) Operation OK input sources. Check with analog and digital inputs. VSX-74TXVi...
Page 227: How To Rewrite The Dsp Flash Rom By Playing Back A Cd
Connect this unit and a player, as shown in the figure below. • CD or DVD player that can recognize a CD-R Note: List of players that cannot recognize a CD-R DV-U7 (Pioneer) DV-S9 (Pioneer) CD or DVD player This unit...
Page 228 (2) After confirming that "OK" is displayed, stop or pause the player then after 5 seconds set the player to STANDBY OFF. 7. Check the version of the program after rewriting. (1) Check the version by simultaneously pressing and holding the STANDARD SURROUND and STANDBY keys. (2) For confirmation, check basic operations. VSX-74TXVi...
Page 229: Troubleshooting
→ With the receiver in Rewriting mode, be sure to play back the stream track twice. "OK" is not displayed. If an error is generated because of a flaw on the disc, "OK" is not displayed. → In such a case, play back the same stream stored on another track as backup. VSX-74TXVi...
Page 230: How To Rewrite The Flash Roms For Various Microcomputers
13. Check the version. Following the procedures described in "Version indication" Select the baud rate. in "7.1.1 TEST MODE," check that the version has been • Basic speed: 19200 changed to a new one. • Data transfer speed: 57600 VSX-74TXVi...
Page 231 13. Check the version. Following the procedures described in "Version indication" in "7.1.1 TEST MODE," check that the version has been Select the baud rate. changed to a new one. • Basic speed: 19200 • Data transfer speed: 57600 VSX-74TXVi...
Page 232 13. Check the version. Following the procedures described in "Version indication" Select the baud rate. in "7.1.1 TEST MODE," check that the version has been • Basic speed: 19200 changed to a new one. • Data transfer speed: 57600 VSX-74TXVi...
Page 233: Disassembly
ASSY NECK8 Q4201 RN1901 V-12A 52151-0510 Q4202 Q4202 UMD2N UMD2N D4215 13(B) IC4202 AEK7021 D4216 Q4203 Q4203 UMD2N UMD2N 13(B) -67V +58V R4206 R4208 4.7k (1W) 3.3k (1/2W) VH REGULATOR -58V VH TR ASSY C4209 C4210 TRANS 2-1 ASSY VSX-74TXVi...
Page 234 2. Disassembly Bonnet Power Amp Block Remove the four screws. Remove the two screws. Remove the four screws. Remove the four screws. Rear view Power amp block Remove the fourteen screws. Remove the bonnet. Bonnet ×3 ×3 ×2 ×3 ×3 VSX-74TXVi...
Page 235 POWER AMP IN Assy POWER PROTECT Assy POWER PROTECT Assy Remove the two nyron rivets. Remove the POWER PROTECT Assy by removing the two connectors. POWER AMP-L Assy POWER AMP IN Assy POWER PROTECT Assy POWER ANP-R Assy POWER PROTECT Assy VSX-74TXVi...
Page 236 ×2 ×2 ×2 POWER AMP IN Assy Replacing the Power Transistor Remove the POWER AMP IN Assy by removing the four Remove the screw. connectors. POWER AMP-L Assy POWER AMP-R Assy POWER AMP IN Assy Power transistor (IC5301) Replace VSX-74TXVi...
Page 237 FM/AM TUNER Unit Remove the FM/AM TUNER Unit by removing the one Remove the two screws. flexible cable. Remove the four screws. (VSX-74TXVi and VSX-74TXVi-S only) Remove the 45 screws. FM/AM TUNER Unit Remove the rear panel. (VSX-74TXVi and VSX-74TXVi-S only) ×4...
Page 238 BRIDGE 3 Assys from the INTERFACE Assy. HDMI & DVC Assy COMPONENT & VOL Assy Remove the COMPONENT & VOL Assy from the INTERFACE Assy. SIDE B HDMI & DVC Assy COMPONENT & VOL Assy Regulator IC (IC901) Replace VSX-74TXVi...
Page 239 Remove the nyron rivet. Remove the two screws. Disconnect the two flexible cables. Remove the four screws. (VSX-74TXVi and VSX-74TXVi-S only) Release the locking card spacer. Disconnect the two flexible cables. Remove the DIGITAL MOTHER Assy with DSP Assy from Locking card spacer the INTERFACE Assy.
Page 240 Block, discharge the condenser of the ±VL line, by discharging CN4101 or CN4102 on the SP/PS Assy, using a discharging resistor. (It is recommended to make a resistance of 100 ohms or more in the series-parallel connection, using four or more discharging resistors of 100 ohms, 3 W.) VSX-74TXVi...
Page 241 VH line (charges of the electrolytic condenser) before putting the Power Amp Block back. (See "1. How to discharge when the Power Amp Block is removed.") Note: If you connect the connectors without discharging, some parts, such as a resistor, may be damaged by the inrushing current. VSX-74TXVi...
Page 242: Failure Diagnosis Of The Power Amp Block
If these diodes are deteriorated, its distortion/frequency characteristics may be affected. If these diodes are open, the scale of damage on the power transistors may be extended if any abnormality is generated in the amplifier next time. VSX-74TXVi...
Page 243: Parts
− Power supply return Parallel port read enable Parallel port address latch enable AD15 Parrallel port address/Data AD14 Parrallel port address/Data AD13 Parrallel port address/Data − Power supply return − VDDEXT I/O power supply (+3.3V) AD12 Parrallel port address/Data VSX-74TXVi...
Page 244 DAI_P18 (SD5B) Digital audio interface DAI_P19 (SCLK45) Digital audio interface − VDDINT Core power supply (+1.2V) − Power supply return − Power supply return − VDDEXT I/O power supply (+3.3V) DAI_P20 (SFS45) Digital audio interface − Power supply return VSX-74TXVi...
Page 245 138 TRST Test reset (JTAG) 139 TCK Test clock (JTAG) 140 TMS Test mode select (JTAG) − 141 GND Power supply return 142 CLKIN Local clock in 143 XTAL Crystal oscillator pin − 144 VDDEXT I/O power supply (+3.3V) VSX-74TXVi...
Page 246 GND 10 512 x 8 Array I/O4 I/O2 11 I/O5 I/O3 12 I/O4 I/O5 WE 13 I/O6 A5 14 I/O7 A6 15 A7 16 A8 17 Column Decoder A9 18 Power Down 22 23 24 32 33 34 35 VSX-74TXVi...
Page 247 P75/TA2IN/W DISP RDY P40/A16 P74/TA2OUT/W DISP RST P41/A17 P73/CTS2/RTS2/TA1IN/V DISP CLK P42/A18 P72/CLK2/TA1OUT/V DISP DO P43/A19 P71/RxD2/SCL2/TA0IN/TB5IN OPEN DISP DI P44/CS0 P70/TXD2/SDA2/TA0OUT 232C TxD 36 P67/TXD1/SDA1 P45/CS1 EVOL CK Vcc1(5V) Vcc1 P46/CS2 P66/RxD1/ 232C RxD P47/CS3 EVOL DT2 SCL1 VSX-74TXVi...
Page 248 O/L AMUTE power ON/OFF(ON: H) P60/CTS0/RTS0 S-DET S-VIDEO detection (H) P137 WAKE_UPB(XM) For XMDTcommunication P136 XM/iPod SELECT O/L POD/XM path switch (iPod: L,XM: H) P135 EXP ST O/L Communication with expansion IC P134 EXP OE O/L Communication with expansion IC P57/RDY/CLKOUT Vcc(5V) Vcc(5V) VSX-74TXVi...
Page 249 O/L Data input/output of FLASH MEMORY communication P16/D14/INT4 O/L Data input/output of FLASH MEMORY communication P15/D13/INT3 O/L Data input/output of FLASH MEMORY communication P14/D12 O/L Data input/output of FLASH MEMORY communication 100 P13/D11 O/L Data input/output of FLASH MEMORY communication VSX-74TXVi...
Page 250 Always H. Set to L when detecting the abnormal. RDS FM+/XM Power supply ON/OFF of RDS decoder. H at ON. XM RESET. H at RESET. RESET Notes: RESET of XMDTIC is L, but output with the reverse logic so that inverting circuit exists. VSX-74TXVi...
Page 251 Pin Function Active SSW1 S-Video Main Function SSW2 S-Video Main Function SSW3 S-Video Main Function S52A S-Video Through / VC / OSD / Mute select S52B S-Video Through / VC / OSD / Mute select Vacant Vacant SINH IC2201,2202 inhibit VSX-74TXVi...
Page 252 CD4094BNS (COMPOSITE V ASSY: IC2009) • Expansion IC Pin Function Pin Name Pin Function Active CVBS Recout Selector CVBS Recout Selector VINH IC2001 inhibit MUTE Video Mute MRINH IC2002,2205,2206 inhibit CVBS Main Through/OSD/VC/Mute select CVBS Main Through/OSD/VC/Mute select CVBS Main Through/OSD/VC/Mute select VSX-74TXVi...
Page 253 Xout P25/AN25/A5(/D5/D4) XOUT P26/AN26/A6(/D6/D5) P27/AN27/A7(/D7/D6) P30/A8(/_/D7) P85/NMI (USB UNLOCK) P84/INT2 Vcc2 HREQ P83/INT1 P31/A9 POFF P82/INT0 P32/A10 DSP2RST P81/TA4IN/U P33/A11 DSP1RST P80/TA4OUT/U P34/A12 EXOE P77/TA3IN P35/A13 S DATA P76/TA3OUT P36/A14 S CLOCK P75/TA2IN/W P37/A15 P74/TA2OUT/W P40/A16 P73/CTS2/RTS2 P41/A17 /TA1IN/V VSX-74TXVi...
Page 254 XHDMI(RF UNLOCK) P46/CS2 For mute control of HDMI input (for RF UNLOCK detection) P45/CS1 XSPDIF For mute control of DIR input P44/CS0 FLASH MEMORY CE control P43/A19 Address output of FLASH MEMORY communication P42/A18 Address output of FLASH MEMORY communication VSX-74TXVi...
Page 255 DSP MUTE control output − VREF Vref Reference voltage − AVcc Avcc Power supply P97/ADTRG/SIN4 DSP2MISO/DSP CDIN DSP communication data input of Motorola/SHARC P96/ANEX1/SOUT4 DSP2MOSI/DSP CDOUT DSP communication data output of Motorola/SHARC DSP2SCK/DSP CCLK 100 P95/ANEX0/CLK4 DSP communication clock output of Motorola/SHARC VSX-74TXVi...
Page 256 DA chip select (For +2 ch) USB(RST3) USB select (3rd DSP reset: plan) DAX(SP3) DSP3 CS output DSD DIRECT DSD Direct setting DSP X'tal ON/OFF control Crystal clock control of DSP H: 06 High model, L: 05 middle model XIEEE 1394 input select VSX-74TXVi...
Page 257 COMM COMM TX_DIGL_OUT ENGINE Low Spd RX_DIG_IN LSDP_TXRX (M=o; S=i) Data Port (LSDP) TX_EN~ SAII_EN (M=i; S=o) SAII_CLK (M=o; S=i) SAII SAII_DATA (M=o; S=i) OSC_IN OSC_OUT SC_RX_IN Sys Ctrlr SC_TX_OUT SLAVE_SEL RESET~ (CBM) ERR_IRQ~ Bus I/F TEST COMMAND_SEL XMDTIC VSX-74TXVi...
Page 258 S=O, M=I SAII port clock output SAII port clock input − +3.3V supply voltage +3.3V supply voltage SAII_DATA S=O, M=I SAII port data output SAII port data input SAII_REQ S=I, M=O SAII port request input SAII port request output VSX-74TXVi...
Page 259 FAULT 3 ON (ON) SN74LVC1G97DCK (DIGITAL MOTHER ASSY : IC304, IC305, IC318) • Configurable Multiple-function Gate Pin Arrangement (Top view) Truth Table INPUTS OUTPUTS In1 1 GND 2 In0 3 Logic Diagram (positive logic) H: High level L: Low level VSX-74TXVi...
Page 260 DACDVCC18 MCLKOUT DACDGND IOVCC AnBPb IOGND DACVCCB CGND DACGNDB CVCC18 AnGY DACVCCG AUDPVCC18 DACGNDG AUDPGND AnRPr XTALOUT DACVCCG XTALIN DACGNDR XTALVCC COMP REGVCC RSET VREF RSVDL DACAGND RESET# DACAVCCI SCDT DACOVCC IOVCC CVCC18 IOGND CGND VSYNC CLK48B HSYNC IOGND VSX-74TXVi...
Page 261 38,39 AnBPb HS,VS, Video Color PanelLink R0X0± 43,44 Space TMDS 24-bit Data Converter Digital R0X1± 47,48 HSYNC Up/Down Core Sampling VSYNC R0X2± 51,52 Port Detect ODCK R0PWR5V 110-113,116-119, R1PWR5V Q[23:0] 123-126,129-133, 136,137,140-144 CLK48B Auto A/V MUTEOUT Exception Handling SCDT VSX-74TXVi...
Page 262 − AVCC TMDS analog VCC (3.3V) SPDIF S/PDIF audio output − R0XC- TMDS input clock pair of HDMI port 0 CVCC18 Digital logic VCC (1.8V) − R0XC+ TMDS input clock pair of HDMI port 0 CGND Digital logic GND VSX-74TXVi...
Page 263 Input/Output pin VCC (3.3V) 24-bit output pixel data bus 24-bit output pixel data bus 24-bit output pixel data bus 24-bit output pixel data bus 24-bit output pixel data bus 24-bit output pixel data bus 24-bit output pixel data bus VSX-74TXVi...
Page 264 Video Data 49-58,61-65, D[23:0] 67-70,75-79 Capture/ TXC± 26,27 4:2:2 to PanelLink DE Gen./ HSYNC 4:4:4 TX0± TMDS 29,30 656 Logic Digital Block VSYNC TX1± 32,33 Core TX2± 35,36 Control Signals SPDIF Audio Data MCLK Capture Logic Audio Data Block SD[3:0] VSX-74TXVi...
Page 265 12-bit input pixel data bus − AGND Analog GND 12-bit input pixel data bus − PVCC2 Filter PLL power (3.3V) 12-bit input pixel data bus − PGND2 Filter PLL ground 12-bit input pixel data bus − Not connected Data enable VSX-74TXVi...
Page 266 I2C port serial clock input (max 400kHz) − Video pixel output port DGND Digital ground − Video pixel output port DVDDIO Digital I/O supply voltage (3.3V) Video pixel output port SDA2 I2C port serial data input/output Video pixel output port Video pixel input port VSX-74TXVi...
Page 267 Video pixel input port AIN9 Analog video input channel Video pixel input port AIN3 Analog video input channel FIELD/DE Field sync signal output/data enable − No connect pin Vertical sync output signal − AGND Analog ground Video pixel input port VSX-74TXVi...
Page 268 P85/NMI TXINT P84/INT2 P30/A8(/_/D7) RXINT P83/INT1 HD_REQI P82/INT0 P31/A9 VSYNC P81/TA4IN/U P32/A10 RXRST P80/TA4OUT/U P33/A11 RXMUTE P77/TA3IN P34/A12 ACLKOFF P76/TA3OUT P35/A13 TXRST P36/A14 P75/TA2IN/W HD_REQO P74/TA2OUT/W P37/A15 VCINT(NC) P73/CTS2/RTS2/TA1IN/V P40/A16 MUTE P72/CLK2/TA1OUT/V P41/A17 VC_SCL P42/A18 P71/RxD2/SCL/TA0IN/TB5IN VC_SDA P70/TXD2/SDA/TA0OUT P43/A19 VSX-74TXVi...
Page 269 Open P52/RD IC502 (for external Flash) P51/WRH/BHE IC502 open P50/WRL/WR IC502 (for external Flash) P47/CS3 PUSEL IC502 DDC communication 2.7k/4.7k resistor switch P46/CS2 DSCL IC502 I2C for DDC P45/CS1 DSDA IC502 I2C for DDC P44/CS0 IC502 (for external Flash) VSX-74TXVi...
Page 270 P104/AN4/KI0 HPDET0 Plug P103/AN3 HPDET1 Plug P102/AN2 EDID P101/AN1 EDID − AVSS AVSS Ground Connect to VSS. P100/AN0 VINSEL2 − VREF VREF 3.3V Connect to VCC. − AVcc AVCC 3.3V Connect to VCC. 100 P97/ADTRG/SIN4 HD_DI Main controller communication VSX-74TXVi...
Page 271 P23/STB P112/FIP39 p_24s p_sys_clk P22/SCK1 P113/FIP40 p_25s p_sys_do P21/SO1 P114/FIP41 p_26s p_sys_di P20/SI1 P115/FIP42 p_27s P116/FIP43 p_28s AVSS p_gp_out_c_2 P17/ANI7 P117/FIP44 p_29s p_gp_out_c_1 P16/ANI6 P120/FIP45 p_30s p_gp_out_c_0 P15/ANI5 P121/FIP46 p_31s p_test_checker P14/ANI4 P122/FIP47 p_32s p_key4 P13/ANI3 P123/FIP48 p_33s VSX-74TXVi...
Page 272 Positive power supply p_1w_wp Main microcomputer start-up output corresponding to 1W P36/BUZ p_gp_out_c_8 General-purpose output (CMOS_8) for IR2SW (must be tied L) P35/PCL p_xanteck xantec correspondence L: set2 (PIONEER), H: set1 (others) P34/TI2 p_gp_out_c_7 General-purpose output (CMOS_7) P33/TI1 p_input_r MULTIJOG P32/TO2 p_input_l...
Page 273 FL drive FIP8 p_9g FL drive FIP7 p_8g FL drive FIP6 p_7g FL drive FIP5 p_6g FL drive FIP4 p_5g FL drive FIP3 p_4g FL drive FIP2 p_3g FL drive FIP1 p_2g FL drive 100 FIP0 p_1g FL drive VSX-74TXVi...
Page 274 Inputs a vertical synchronization signal created by integrating the SEPOUT pin output signal CTRL2 NTSC/PAL-M switching input CTRL3 Control whether or not the VSYNC signal is input to the SEPIN input System reset input − VDD1 Power supply (+5 V: digital system power supply) VSX-74TXVi...
Page 275: Panel Facilities
8. PANEL FACILITIES Front panel Illustration shows the VSX-74TXVi front panel VSX-74TXVi AUDIO/VIDEO MULTI-CHANNEL RECEIVER STANDBY/ON PHASE CONTROL DIGITAL PRECISION PROCESSING PHASE MCACC AUTO SURR/ HOME STANDARD ADVANCED CONTROL POSITION STREAM DIRECT SURROUND SURROUND INPUT MASTER SELECTOR VOLUME MULTI - ROOM &...
Page 276 Blinks when connecting an HDMI-equipped Selects the surround back channel mode or virtual component; lights when the component is connected. surround back mode. 10 i.LINK indicator (VSX-74TXVi only) 22 STEREO Lights when an i.LINK-Audio-equipped Switches to stereo playback. component is selected.
Page 277 Displays various system information. TUNER indicators TUNED - Lights when a broadcast is being 18 SR+ received. Lights when the SR+ mode is switched. STEREO - Lights when a stereo FM broadcast is being received in auto stereo mode. VSX-74TXVi...
Page 278: Remote Control
TV CONT button. Thus if you only INPUT SELECT have one TV to hook up to this system assign it to the TV CONT input source button. If you have two TVs, assign the main TV to the TV CONT button. VSX-74TXVi...
Page 279 MULTI OP - See Multi Operation and System Off. SYS OFF - See Multi Operation and System Off. DIRECT F - See Direct function. RENAME - See Renaming input source names. ERASE - See Erasing one of the remote control button settings. VSX-74TXVi...
Page 280: Rear Panel
Use for connection to an external remote control 1 Optical digital audio output(s) sensor for use in a multi-room setup, for example. Use the OUT1 and (VSX-74TXVi only) OUT2 jack Connecting an IR receiver. ecording to a CD or MiniDisc recorder.
Page 281 7.1 channel inputs for connection to a DVD player with multichannel analog outputs. Connecting the multichannel analog inputs. 16 Control input/output Use to connect other Pioneer components so that you can control all your equipment from a single IR remote sensor. Operating other Pioneer components with this unit’s sensor.
Page 282 CLEANING Before shipping out the product, be sure to clean the following positions by using the prescribed cleaning tools: Position to be cleaned Cleaning tools Fans Cleaning paper : GED-008 VSX-74TXVi...

This manual is also suitable for:

Vsx-74txvi-s Vsx-72txv Vsx-72txv-s

Pioneer VSX-74TXVi Service Manual

1 Specifications

2 Exploded Views and Parts List

3 Block Diagram and Schematic Diagram

4 Pcb Connection Diagram

5 Pcb Parts List

6 Adjustment

7 General Information

Contents

8 Panel Facilities

Quick Links

Troubleshooting

Related Manuals for Pioneer VSX-74TXVi

Summary of Contents for Pioneer VSX-74TXVi

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Table of Contents