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Pioneer VSX-50 Service Manual
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Pioneer VSX-50 Service Manual

Audio/video multi-channel receiver
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AUDIO/VIDEO MULTI-CHANNEL RECEIVER
VSX-50
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Model
Type
VSX-50
KUXU/CA
This product is a system(s) component.
Component
DVD RECEIVER
AUDIO/VIDEO MULTI-CHANNEL RECEIVER
DVD PLAYER
For details, refer to "Important symbols for good services".
PIONEER CORPORATION
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 2003
STANDBY/ON
PULL-
OPEN
Power Requirement
AC120V
System
EX-500
VSX-50
DV-50A
4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan
MASTER
2
2
DIGITAL
DTS
AUTO
PRO LOGICII
NEO:6
ADVANCED
PHONES
SOUND MODE
INPUT SELECTOR
VOLUME
DOWN
UP
VSX-50
Service Manual
RRV2798
RRV2797
This Manual
RRV2740
ORDER NO.
RRV2797
Remarks
Remarks
T-ZZK JULY 2003 printed in Japan

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  • 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...

  • 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 By following the instructions in this manual, be sure to apply the prescribed grease or glue to proper portions by the appropriate amount.For replacement parts or tools, the prescribed ones should be used. VSX-50...

  • Page 4: Table Of Contents

    7.1.2 Protection Circuit ..........................82 7.1.3 Specifications of Speaker Detection ....................83 7.1.4 Circuit Description ..........................84 7.1.5 Troubleshooting..........................85 7.1.6 Timing Chart ............................87 7.2 PARTS..............................91 7.2.1 IC ............................... 91 7.2.2 DISPLAY............................97 7.3 CLEANING............................... 98 8. PANEL FACILITIES ............................99 VSX-50...

  • Page 5: Specifications

    TV CONTROL ZOOM • Microphone stand FRONT INPUT CHANNEL VOL UME CHANNEL • AM loop antenna SURROUND FRONT (AEB7313) DIMMER (ATB7009) FRONT DVD RECEIVER CENTER • FM wire antenna CENTER (ADH7004) SURROUND SURROUND SURROUND SURROUND SURROUND BACK SURROUND BACK VSX-50...

  • Page 6: 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-50...
  • Page 7 AHA7407 Right Pad 301 AHA7408 Spacer AHB7088 Packing Sheet AHG7015 Packing Case AHD8169 SR+ mini-plug cable ADE7095 Microphone stand AEB7313 Microphone APM7004 Coaxial Cable ADE7087 Audio cable ADE7087 SR mini-plug cable PDE1297 Stereo audio cable VDE1054 Video cable VDE1055 VSX-50...

  • Page 8: Exterior Section

    2.2 EXTERIOR SECTION Refer to "2.3 INTERIOR SECTION". *Serial Number Label is put on bottom of Under Base. Refer to "2.4 FRONT PANEL SECTION". VSX-50...
  • Page 9 Screw BBZ30P140FMC J1905 13P FFC/60V ADD7402 NSP 24 Label VRW1629 VIDEO Assy AWX8248 NSP 26 PCB Spacer AEC7156 NSP 27 Energy Star Label AAX7876 J1911 19P FFC/60V ADD7422 NSP 29 Binder ZCA-BK1 S-VIDEO Assy AWX8185 SP Terminal Label ARW7229 VSX-50...

  • Page 10: Interior Section

    2.3 INTERIOR SECTION VSX-50...
  • Page 11 Core Stay B ANG7448 Jack Stay ANG7450 Trans Frame ANG7446 NSP 26 Under Base ANA7151 PCB Support AEC7365 PCB Mold AMR2533 NSP 29 PC Support VEC1749 Foot REC-434 Screw BBZ30P060FMC Screw BCZ40P060FNI Screw BBZ30P180FMC NSP 34 Fuse Card AAX2374 VSX-50...

  • Page 12: Front Panel Section

    2.4 FRONT PANEL SECTION Accessories of No. 4 ENCORDER ASSY VSX-50...
  • Page 13 AMR7447 Front Frame ANG7445 FL Lens 501 AAK8087 Screw PPZ30P080FMC Door Spring ABK7041 Earth Plate ANG7466 Door 501 AAK8090 LED Plate 501KU AAK8094 FL Filter AAK8104 Rubber Sheet AEB7054 LED Lens Holder AMR7448 Door Sheet AMR7449 Hologram Label ARW7239 VSX-50...

  • Page 14: Block Diagram And Schematic Diagram

    3.1.1 AUDIO BLOCK FRONT IN ASSY (3/3) FM/AM TUNER MODULE AXQ7245 FRONT IN ASSY (1/3) IC702 IC701 IC704 AUDIO INPUT ASSY IC705 KAWA ASSY 28 26 FRONT IN ASSY (2/3) 6 7 8 12 4 5 6 7 ASSY VSX-50...
  • Page 15 AMP KAWA ASSY 6CH AMP ASSY AMP OUT ASSY MOTHER ASSY VSX-50...

  • Page 16: Video And Power Supply Blocks

    VOUT1 VIN2 VIDEO VIN4 S-VIDEO ASSY IC2501 NJM2296M FUNCTION SELECTOR VIDEO INPUT VIDEO OUTPUT VIN1 VOUT3 DVR/VTR TV/BS VIN3 DVR/VTR VIN2 VOUT1 (to TV) VIN4 VIDEO VIN5 VIDEO ASSY CN2501 CN9001 MOTHER ASSY CN1204 CN4102 FRONT FRONT IN ASSY VSX-50...
  • Page 17 POWER LINE PRIMARY ASSY AUDIO MOTHER ASSY INPUT ASSY D622-D625 12V ASSY VHVL ASSY 6CH AMP ASSY DSP ASSY MOTHER ASSY VSX-50...

  • Page 18: Overall Wiring Diagram

    AUDIO INPUT ASSY (AWX8185) (AWX8248) (AWX8228) 12V ASSY (AWX8170) AC POWER CORD ADG7021 AC INLET ASSY VKP2126 1/5- MOTHER ASSY PRIMARY ASSY (AWX8212) (AWX8244) 1/2- DSP ASSY (AWX8239) J4101 ADX7442 FRONT IN ASSY (AWX8246) FRONT ASSY (AWX8214) SW ASSY (AWX8206) VSX-50...
  • Page 19 Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST". AMP KAWA ASSY FM/AM (AWX8223) TUNER AMP OUT ASSY MODULE DC FAN MOTOR (AWX8229) ASSY AXM7025 (AXQ7245) 6CH AMP ASSY (AWM7786) DSP KAWA ASSY (AWX8257) VHVL ASSY (AWX8260) D5V ASSY (AWX8224) ENCODER ASSY (AWX8207) VSX-50...

  • Page 20: Video Assy

    3.3 VIDEO ASSY S-VIDEO ASSY (AWX8185) S-VIDEO BLOCK IC2402 NJM2296M VSX-50...
  • Page 21 VIDEO BLOCK VIDEO ASSY (AWX8248) IC2501 NJM2296M REAR PANEL : VIDEO SIGNAL ROUTE : The power supply is shown with the marked box. VSX-50...

  • Page 22: Audio Input Assy

    3.4 AUDIO INPUT ASSY AUDIO INPUT ASSY (AWX8228) CN1263 VSX-50...
  • Page 23 AGAINST RISK OF FIRE. : AUDIO SIGNAL ROUTE (ANALOG) REPLACE ONLY WITH SAME TYPE NO. 49102.5 FOR IC820 AND IC821 : AUDIO SIGNAL ROUTE (DIGITAL) MFD, BY LITTELFUSE INC. : The power supply is shown with the marked box. VSX-50...

  • Page 24: Mother Assy (1/5)

    3.5 MOTHER ASSY (1/5) CN201 CN2501 : The power supply is shown with the marked box. CN551 VSX-50...
  • Page 25 CN4203 MOTHER ASSY (AWX8212) DC DETECT: 3-4V OVERLOAD DETECT: 2-3V Short-circuit Fan and Power supply circuit: less than 2V (VH/VL) CN8012 VSX-50...

  • Page 26: Mother Assy (2/5) And Dsp Kawa Assy

    3.6 MOTHER ASSY (2/5) and DSP KAWA ASSY NORMAL : 0V OVERLOAD : 5V IATT ON : +12V OFF : -12V INPUT ATT A/D OVERLOAD DETECT DSP KAWA ASSY (AWX8257) CN8017 CN8003 CN8007 VSX-50...
  • Page 27 MOTHER ASSY (AWX8212) : AUDIO SIGNAL ROUTE (ANALOG) LOW PASS FILTER : AUDIO SIGNAL ROUTE (DIGITAL) For SP CONFIG. MIX AMP : The power supply is shown with the marked box. VSX-50...

  • Page 28: Mother Assy (3/5)

    3.7 MOTHER ASSY (3/5) MOTHER ASSY (AWX8212) VSX-50...
  • Page 29 : AUDIO SIGNAL ROUTE (ANALOG) VSX-50...

  • Page 30: Mother Assy (4/5)

    3.8 MOTHER ASSY (4/5) MOTHER ASSY (AWX8212) VSX-50...
  • Page 31 : AUDIO SIGNAL ROUTE (ANALOG) (HP) : AUDIO SIGNAL ROUTE (HP OUT) 15dB ATT (HP) VOLUME -∞ to -15dB : 5V -14dB to 0dB : -12V MUTE ON : +3V OFF : -12V : The power supply is shown with the marked box. VSX-50...

  • Page 32: Mother Assy (5/5)

    NO. 491004 FOR IC203 MFD, BY LITTELFUSE INC. CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE ONLY WITH SAME TYPE NO. 491.630 FOR IC206 MFD, BY LITTELFUSE INC. : The power supply is shown with the marked box. VSX-50...
  • Page 33 J6001 CN4201 VSX-50...

  • Page 34: Dsp Assy (1/2)

    3.10 DSP ASSY (1/2) VSX-50...
  • Page 35 DSP ASSY (AWX8239) CN1811 : The power supply is shown with the marked box. VSX-50...

  • Page 36: Dsp Assy (2/2)

    3.11 DSP ASSY (2/2) CN9005 VSX-50...
  • Page 37 : The power supply is shown with the marked box. DSP ASSY (AWX8239) VSX-50...

  • Page 38: Front In And Amp Kawa Assys

    3.12 FRONT IN and AMP KAWA ASSYS FRONT IN ASSY (AWX8246) : 0V CN1204 No HP : 5V (HP) ADX7442 (HP) (HP) : AUDIO SIGNAL ROUTE (HP OUT) VSX-50...
  • Page 39 CN203 CN1501 : AUDIO SIGNAL ROUTE (ANALOG) : The power supply is shown with the marked box. CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE ONLY WITH SAME TYPE NO. 491007 FOR IC4701 MFD, BY LITTELFUSE INC. VSX-50...

  • Page 40: 6Ch Amp Assy

    3.13 6CH AMP ASSY CN3651 to FAN Motor CN3001 (FL) (SB) (SL) CN3002 VSX-50...
  • Page 41 : FL ch AUDIO SIGNAL ROUTE (SL) : SL ch AUDIO SIGNAL ROUTE : The power supply is shown with the marked box. : C ch AUDIO SIGNAL ROUTE (SB) : Refer to "7. 1. 4 Circuit Description". : SB ch AUDIO SIGNAL ROUTE VSX-50...

  • Page 42: Amp Out Assy

    3.14 AMP OUT ASSY AMP OUT ASSY (AWX8229) (HP) CN252 (HP) (HP) : AUDIO SIGNAL ROUTE (ANALOG) (HP) : AUDIO SIGNAL ROUTE (HP OUT) : The power supply is shown with the marked box. VSX-50...
  • Page 43 VSX-50...

  • Page 44: Encoder, Front And 1P-Sw Assys

    3.15 ENCODER, FRONT and 1P-SW ASSYS ENCODER ASSY (AWX8207) FRONT ASSY (AWX8214) ENCODER ASSY S4451 : INPUT SELECTOR S4452 : MASTER VOLUME Display Microcomputer VSX-50...
  • Page 45 POWER SW ASSY S4501 : STANDBY/ON LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED8 DOLBY DOLBY SOUND AUTO NEO6 ADVANCED PHONES DIGITAL PROLOGIC MODE SW-ON : 0V OTHERS : 5V : The power supply is shown with the marked box. VSX-50...

  • Page 46: Primary, D5V, 12V And Vhvl Assys

    3.16 PRIMARY, D5V, 12V and VHVL ASSYS T1 POWER TRANSFORMER ATS7351 CN202 CN2108 CN203 D5V ASSY (AWX8224) 12V ASSY (AWX8170) VSX-50...
  • Page 47 REPLACE ONLY WITH SAME TYPE NO. 491010 FOR IC201 AND IC202 MFD, BY LITTELFUSE INC. VHVL ASSY (AWX8260) • NOTE FOR FUSE REPLACEMENT FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. CAUTION - REPLACE WITH SAME TYPE AND RATINGS ONLY. VSX-50...

  • Page 48: Fm/Am Tuner Module

    3.17 FM/AM TUNER MODULE FM/AM TUNER MODULE (AXQ7245) FM FRONT END (FM) (FM) (FM) (FM) (FM) (AM) (AM) (AM) MW RF TUNING BLOCK (FM) (AM) OSC : 981 - 2052kHz 9k step VSX-50...
  • Page 49 : The power supply is shown with the marked box. (TX) : AUDIO SIGNAL ROUTE (TUNER) (AM) : AM SIGNAL ROUTE (FM) : FM SIGNAL ROUTE ATF7026 (AM) (TX) (FM) (TX) (TX) (TX) (FM) (FM) (TX) (AM) L201 ATE7003 PLL IC VSX-50...

  • Page 50: 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 P.C.Board Chip Part transistor Resistor array 3-terminal regulator VSX-50...

  • Page 51: Fm/Am Tuner Module

    Printed T-meter Side C211 IC201 CPSC-BS1 94V-0 R221 W107 +10V W108 CN201 W103 BLACK (ANP7458-A) CN201 IC201 Q202 IC202 CN801 SIDE B SIDE B FM/AM TUNER MODULE CN201 CN201 IC201 IC202 (ANP7458-A) Q602 Q201 IC201 Q601 IC202 Q203 Q204 VSX-50...

  • Page 52: Audio Input And 12V Assys

    C729 GDA2 V+12 J620 COAX V+12 V-12 OPT2 W852 GDA2 OPT1 CN901 V+12 W856 GNDD V+5D W857 V+12 CN701 C738 C737 CN901 PYKC F4 (ANP7450-B) CN701 CN901 CN621 CN1262 CN1263 T1 PT 12V ASSY C603 C604 (ANP7450-B) IC601 IC602 VSX-50...
  • Page 53 SIDE B SIDE B IC901 IC704 IC701 IC705 IC702 AUDIO INPUT ASSY CN621 C904 C701 IC901 ÇT IC701 ÇS CN901 CN701 PYKC F4 CN901 CN701 (ANP7450-B) 12V ASSY (ANP7450-B) VSX-50...

  • Page 54: Mother, Dsp Kawa And D5V Assys

    CN4701 CN1207 J701 CN901 Q1301 IC206 IC203 IC205 IC4651 Q1501 Q1502 Q1505 Q1506 Q1510 IC1302 IC210 IC9002 Q1264 IC1501 IC1502 IC1503 IC1504 IC1304 IC1303 Q1102 Q1503 Q1504 Q1508 Q1511 Q1513 IC1241 IC1301 Q1263 Q1101 IC1221 Q1507 Q1514 Q1266 Q1265 VSX-50...
  • Page 55 SL O C1269 SW O C1161 CN201 SB O CN801 (ANP7452-A) CN551 CN701 CN1262 KN1201 (ANP7452-A) CN1263 CN9001 CN2501 CN901 IC9001 Q1264 Q9009 Q9008 Q9011 Q9010 Q1104 Q1103 Q1102 Q9003 IC1101-IC1104 Q1263 Q1101 IC1105 Q9006 Q9007 Q1266 Q1265 IC1261 Q9005 VSX-50...
  • Page 56 SB O GNDC FR O VCOMG FL O CN801 SR O GNDC SL O SW O R1263 C1262 R808 C1261 R1264 R1262 SB O R1286 (ANP7452-A) CN9001 CN1262 CN1263 CN1262 CN9001 CN1263 Q4651 Q4652 Q801 Q9004 Q9001 Q1262 Q1261 VSX-50...
  • Page 57 MENT DES FUSIBLES IC206 N'UTILISER QUE LA REFERENCE 491.630 DE CHEZ LITTELFUSE INC.. C1365 C1364 R1234 R1233 R1230 C9000 R1529 R1242 R1531 R1226 C1215 R1223 C1214 CN1501 R1197 C1185 (ANP7452-A) R1193 CN1501 D1211 C1212 CN1207 R1263 C1261 1263 Q4653 Q1512 VSX-50...

  • Page 58: Dsp Assy

    4.4 DSP ASSY SIDE A SIDE A DSP ASSY CN1811 IC8201 CN1264 Q8504 IC8702 IC8301 Q8341 CN1814 IC8701 Q8501 IC8501 CN9005 IC8502 IC8603 IC8601 (ANP7465-A) VSX-50...
  • Page 59 C8544 R8523 C8520 R8309 C8518 C8542 R8310 C8521 R8311 C8540 R8528 R8312 R8313 R8529 R8314 C8539 R8326 C8538 C8529 C8534 C8535 R8537 L8502 R8603 L8602 C8531 R8801 R8812 R8811 R8813 R8602 C8014 IC8602 C8013 C8606 C8605 C8608 C8607 (ANP7465-A) VSX-50...

  • Page 60: Front In Assy

    NO. 491010 IC201 ,IC202 MFD. BY LITTEL FUSE INC. (ANP7455-A) CN4102 IC4602 CN1204 SIDE B SIDE B FRONT IN ASSY CN4102 C4167 IC4601 C4168 C4166 C4165 D4101 C4606 D4102 C4118 R4608 R4607 R4604 C4605 C4117 C4102 (ANP7455-A) Q4604 IC4601 VSX-50...

  • Page 61: Amp Kawa Assy

    CN4701 CN4705 CN4706 ATTENTION EN CAS DE REMPLACEMENT FUSIBLES IC4701 N'UTILISER QUE LA REFERENCE 491007 DE CHEZ LITTELFUSE SLOUT SLOUT INC. SROUT SROUT COUT COUT SBOUT SBOUT GNDS FLOUT FLOUT GNDP PYKC F4 GNDP FROUT FROUT (ANP7450-B) CN4703 J4702 VSX-50...

  • Page 62: 6Ch Amp Assy

    W151 IC3301 W179 R3322 D3324 D3326 D3393 R3328 R3318 W180 D3328 D3322 Q3383 W181 R3320 W182 GNDP C3308 R3387 C3508 D3394 R3518 C3324 W200 R3520 Q3384 W201 D3387 W155 FROUT D3385 R3388 D3386 W156 W203 D3388 W157 (ANP7459-A) CN3651 VSX-50...
  • Page 63 R3534 R3389 R3540 Q3534 R3510 SWOUT Q3534 Q3532 C3504 SWOUT C3506 R3512 GNDS C3510 FLOUT D3582 R3506 FLOUT D3544 R3538 GNDP R3544 GNDP Q3381 FROUT Q3381 FROUT R3592 R3532 R3381 FROUT R3390 R3382 Q3382 Q3382 FAN SIDE (ANP7459-A) CN3651 VSX-50...

  • Page 64: Amp Out Assy

    R364 R304 FR OUT FR OUT FL OUT FL OUT GNDS C OUT R323 C OUT SR OUT SR OUT SL OUT SL OUT CN4703 SB OUT SB OUT GNDF GNDF V+15 R346 R358 PYKC F4X (ANP7455-A) CN301 CN9010 VSX-50...
  • Page 65 SIDE B SIDE B AMP OUT ASSY C304 Q302 Q301 R305 C316 Q305 Q304 R321 Q313 Q317 Q309 Q310 Q312 (ANP7455-A) CN301 VSX-50...

  • Page 66: Encoder, Front And 1P-Sw Assys

    4.9 ENCODER, FRONT and 1P-SW ASSYS SIDE A CN9006 FRONT ASSY CN4203 CONTACT SIDE D4205 D4203 D4204 D4206 CN4203 AWX8199 AWX8173 AWX8205 AWX8214 X4201 AWX8202 AWX8196 AWX8211 AWX8217 4202 FRONT ASS'Y 4501 4501 J4201A POWER SW ASS'Y AWX8174 AWX8206 HCMK-P3X (ANP7453-C) 1P-SW ASSY VSX-50...
  • Page 67 SIDE A CN207 CN4201 CONTACT SIDE D4210 D4209 D4206 D4207 D4208 CN4201 AWX8214 AWX8217 C4218 4201 L4201 V4301 HCMK-P3X (ANP7453-C) 4401 ENCODER ASS'Y HCMK-P3X AWX8175 S4402 ENCODER ASSY (ANP7453-C) VSX-50...
  • Page 68 R4216 R4224 R4215 R4203 C4215 C4216 R4241 R4214 FENCA FENCB R4213 GNDU R4212 VENCB VENCA R4243 R4211 R4244 HCMK-P3X C4217 IC4201 Q4208 Q4206 4401 HCMK-P3X R4404 R4403 C4401 C4404 R4402 C4405 R4401 C4406 ENCORDER ASSY AWX8175 (ANP7453-C) ENCODER ASSY VSX-50...
  • Page 69 C4221 R4218 R4231 R4230 C4229 R4229 D4211 Q4201 R4210 R4216 R4215 Q4202 Q4211 Q4210 AWX8196 AWX8173 AWX8202 AWX8199 AWX8205 AWX8211 AWX8214 FRONT ASSY AWX8217 (ANP7453-C) Q4204 Q4203 Q4210 Q4202 Q4201 4501 POWER SW ASSY AWX8174 AWX8206 (ANP7453-C) 1P-SW ASSY VSX-50...

  • Page 70: Primary Assy

    CN503 PRIMARY C502 SECONDARY T501 TVMUTE PRINTED SIDE IC551 CN551 (ANP7450-B) J9002 SIDE B SIDE B PRIMARY ASSY CN551 AWX8179- -U AWX8244- -U D557 AWX8190- -U AWX8245- -U AWX8192- -U R555 AWX8222- -U Q551 CN551 CN502 (ANP7450-B) CN502 CN501 VSX-50...

  • Page 71: Vhvl Assy

    IC201 2.GND 1.ACB GNDP IC202 6.VL+ W202 VHVL ASS'Y AWX8178- -U BOND PYKC F4 AWX8165- -U W201 AWX8259- -U AWX8260- -U (ANP7450-B) CN201 CN206 T1 PT J4702 SIDE B SIDE B VHVL ASSY CN206 CN201 PYKC F4 CN252 (ANP7450-B) VSX-50...

  • Page 72: Video Assys

    SIDE B VIDEO ASSY CN2501 R2528 AWX8181- -U CN2501 AWX8191- -U D2505 PYKC F4 AWX8225- -U AWX8247- -U C2515 C2516 R2525 AWX8248- -U D2511 C2508 C2509 R2508 R2522 R2509 R2527 C2519 C2521 C2520 C2506 C2517 (ANP7450-B) Q2505 IC2501 Q2504 Q2503 VSX-50...

  • Page 73: S-Video Assys

    SIDE B SIDE B S-VIDEO ASSY C2417 PYKC F4 R2427 R2418 R2419 R2414 C2422 R2435 V+6V GNDV V-6V C2428 R2431 AWX8181- -U AWX8185- -U C2423 R2436 AWX8247- -U R2438 R2430 R2401 C2425 C2401 DVR/VCR VIDEO S-VIDEO ASS'Y (ANP7450-B) IC2401 IC2402 VSX-50...

  • Page 74: Pcb Parts List

    C2420,C2421 CEAL470M16 IC901 TC7WU04F C2403,C2406,C2409,C2412 CEAT470M25 IC702, IC704, IC705 UPC4570G2 C2401,C2404,C2407,C2410 CKSRYB103K50 D622–D625 1SR154-400 C2402,C2405,C2408,C2411 CKSRYB104K25 D701 DAN217 C2417-C2419 CKSRYB104K25 C2415,C2416,C2422,C2423 CKSRYB473K50 COILS AND FILTERS F620, F621 CHIP BEADS DTF1070 RESISTORS L901 CHIP SOLID INDUCTOR QTL1013 All Resistors RS1/16S###J VSX-50...
  • Page 75 CKSRYB103K50 Q1510-Q1514 2SC3326 C1266 CKSRYB104K16 C1187,C1188,C1237-C1240,C1271 CKSRYB104K25 Q1103,Q1104 2SK208 Q1101,Q1263,Q1266,Q9004 DTA124EK C215, C216, C9023 CKSRYB104K25 Q9008-Q9010 DTA124EK C1272,C803, C805, C9006 CKSRYB105K10 Q1102,Q1265 DTC124EK C1144 CKSRYB223K50 Q1264,Q9001 DTC143EK C1198 CKSRYB471K50 C1133,C1134,C1153,C1154,C1173 CKSRYB472K50 Q9011 DTC143TK D204 1SR154-400 C1235,C1236 CKSRYB472K50 D1101,D1102,D1253,D1254,D801 1SS355 VSX-50...
  • Page 76 CN8007 19P SOCKET AKP7073 IC8501 DSPD56367PV150 CN8017 10P FFC CONNECTOR VKN1414 IC8601 IS61LV6416-12T X8501 CRYSTAL RESONATOR VSS1171 IC8602 IS63LV1024-12T (20MHz) IC8901 NJM2391DL1-33 X8201 CRYSTAL RESONATOR XSS3003 IC8902 NJU7223DL1-18 (24.576MHz) IC8603 PD8116A IC8701 TC74LVX244FT IC8702 TC74VHCT244AFT FRONT-IN ASSY IC8503 TC7WH125FU SEMICONDUCTORS VSX-50...
  • Page 77 Q3652 DTA124TK AMP OUT ASSY > Q3383 IRFI9Z34G > Q3384 IRFIZ34G SEMICONDUCTORS Q3651 RN1901 Q320 2SA1037K Q101, Q103 UMB1N > Q321 2SA1037K Q322 2SA1037K Q102, Q104 UMH1N Q303 2SC2712 > D3321-D3326 1SR139-400 Q301, Q302, Q304, Q305 2SC4081 D3327,D3328 1SR139-400 VSX-50...
  • Page 78 SWITCHES AND RELAYS D554 UDZS5.1B S4451 ASX7044 S4452 ASX7045 COILS AND FILTERS > L501 LINE FILTER ATF7018 RESISTORS All Resistors RS1/16S###J TRANSFORMERS > T501 STANDBY TRANSFORMER ATT7079 OTHERS 4451 5P CABLE HOLDER 51048-0500 SWITCHES AND RELAYS > RY501 ASR7013 VSX-50...
  • Page 79 BN201 TERMINAL 4-P AKA7003 (SHIELD CASE T) ANK7072 RESISTORS (SHIELD CASE B) ANK7073 R362 RD1/2VM332J X201 CRYSTAL RESONATOR ASS1093 > R202 RD1/4MUF100J (7.2MHz) OTHERS FM FRONTEND AXF7003 CN252 2P-VH CONNECTOR B2P-VH AM RF TUNING BLOCK AXX7071 CN201 5P-VH CONNECTOR B5P-VH VSX-50...

  • Page 80: Adjustment

    Pin 21 and Pin 23 of IC201 (Test point Vtm) Adjustment gets within 0 ± 50mV. PRODUCT MPX SG FM SG Voltmeter FM75Ω antenna terminal Fig.1 Adjustment Wiring Diagram FM/AM TUNER MODULE L201 IC201 pin 21 pin 23 SIDE B Fig.2 Adjustment Point VSX-50...

  • Page 81: General Information

    Note : Test mode of No. 1-11 is Preset ID 150. Select are returned to those immediately before Microphone Input Test mode of No. 12-15 is Preset ID 156. Check mode was entered, then Microphone Input Check mode is VSX-50...

  • Page 82: Protection Circuit

    Fan stop XPROTECT port (A/D) Detection method 0.4 Vdd or less Detection start time 1.0 sec after Mute: On Process Speaker Relay: Off Shifting to STBY Display No display Recovery Hold the STANDBY key pressed for 10 sec. Remarks VSX-50...

  • Page 83: Specifications Of Speaker Detection

    5 Detection circuit for the center speaker Check signal from microcomputer Detection of the center speaker 10 kΩ Detection signal to microcomputer 47 kΩ mute Mute About 8Ω Satellite speakers may be connected. POWER AMP (IC3301) VSX-50...

  • Page 84: Circuit Description

    → The microcomputer detects the XPROTECT level and shuts the power to the unit off. (3) When VD+5 is short-circuited The level of the XPROTECT line becomes low. The microcomputer detects the XPROTECT level and shuts the power to the unit off. VSX-50...

  • Page 85: Troubleshooting

    • Check power voltage of IC1501-1503. Check Pins 15 and 17-21 • Check AMUTE. of CN3002. Check Pins 3, 7, 10, 14, • Check power voltage and periphery of IC3301 and IC3401. 18, 22 of CN3001. Check SP OUT. VSX-50...
  • Page 86 (even if you push Power Switch Key) • Pull out the Power Cord from the outlet. • Short-circuits C9003 (MOTHER ASSY) for a moment, and discharge an electric charge. • Turn on the power (Plug in the Power Cord to the outlet.) VSX-50...

  • Page 87: Timing Chart

    7.1.6 Timing Chart VSX-50...
  • Page 88 (IC1211 : NJU7313AM) VIDEO system mute (IC2205 : NJM2296) mute TUNER (IC202 : LC72131) mute E-VOLUME (IC1221 : BD3814FV) (IC8501 : DSPD56367PV150) DIR/CODEC (IC8201 : AK4114VQ / IC8401 : AK4628VQ) SPEAKER relay (port) OVERLOAD DETECT AMP ERROR DETECT FAN ERROR DETECT VSX-50...
  • Page 89 VSX-50...
  • Page 90 VSX-50...

  • Page 91: Parts

    P33/A11 MVRATT P77/TA3IN P34/A12 RY-AC P76/TA3OUT P35/A13 HP DET P75/TA2IN/W P36/A14 RY_SP 1394 RST P74/TA2OUT/W P37/A15 RY_HP P40/A16 1394 CS P73/CTS2/RTS2/TA1IN/V MCACC 1394 CK P72/CLK2/TA1OUT/V P41/A17 AMUTE P71/RxD2/SCL 1394 DO P42/A18 GAIN_SEL /TA0IN/TB5IN 1394 DI P70/TXD2/SDA P43/A19 IATT /TA0OUT VSX-50...
  • Page 92 Data input signal for communication with DIR/DAC P50/WRL/WR DIR CS Chip select signal for communication with DIR/DAC P47/CS3 DIR codec over flag P46/CS2 DIR CDC RST Reset signal for DIR codec P45/CS1 DIR ERR Lock/unlock signal P44/CS0 XTL0 DIR X'tal change VSX-50...
  • Page 93 P103/AN3 "L" fixed P102/AN2 SIMUKE1 lnput 1 to switch region P101/AN1 XPROTECT Ptotection circuit detect for amp. module AVSS AVSS Connect to VSS P100/AN0 "L" fixed VREF VREF Connect to VCC AVcc AVCC Connect to VCC P97/ADTRG/SIN4 "L" fixed VSX-50...
  • Page 94 P20/SCK3 C-MOS P-CH FIP31/P37 DISP EN P00/INTP0 C-MOS P-CH FIP32/P40 LED8 NC(PD)(MULTIROOM SRIN) P01/INTP1 C-MOS P-CH FIP33/P41 LED7 SR IN P02/T1 C-MOS P-CH FIP34/P42 LED6 LED5 AVSS P-CH FIP35/P43 ANI3 COPM P-CH FIP36/P44 LED4 ANI2 COMP P-CH FIP37/P45 LED3 VSX-50...
  • Page 95 TEST Test mode input for checker P55/FIP45 AV DIRECT "L" fixed (Status signal input of SCART(DVD, STB, DVR)) P54/FIP44 P53/FIP43 P52/FIP42 1W WUP Output wakeup signal to main u-com P51/FIP41 P50/FIP40 P47/FIP39 LED1 LED output P46/FIP38 LED2 LED output VSX-50...
  • Page 96 Display FIP18 Display FIP17 Display FIP16 Display FIP15 Display FIP14 Display FIP13 Display FIP12 Display FIP11 Display FIP10 Display FIP9 Display FIP8 Display FIP7 Display FIP6 Display FIP5 Display FIP4 Display FIP3 Display FIP2 Display FIP1 Display FIP0 Display VSX-50...

  • Page 97: Display

    7.2.2 DISPLAY AAV7093 (FRONT ASSY : V4301) • FL Display Pin Assignment Grid Assignment Segment Designation Pin Connection VSX-50...

  • Page 98: Cleaning

    Anode Connection 7.3 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-50...

  • Page 99: Panel Facilities

    Lights when phones surround mode is active. SOUND MODE indicator Lights when one of the Sound Modes is active. Remote control sensor INPUT SELECTOR knob Turn to cycle through the various inputs. The current input is shown in the front panel display. VSX-50...
  • Page 100 The triangular segments and SW (subwoofer) indicate the active speaker output channels. VIR.SB indicator Lights when the Virtual Surround Back effect is on. OVER indicator Lights when an analog input signal is too high, risking distortion. Use the input attenuator to reduce the level. VSX-50...

  • Page 101: Rear Panel

    S-VIDEO TV/SAT IN jack CONTROL IN jack / CONTROL OUT jack S-video jack connection for the TV/SAT input. Use to link Pioneer components together to enable all components in the chain to use just one remote control S-VIDEO DVR/VCR IN jack sensor.
  • Page 102 When the receiver is set to any other input, that signal is output from the DVR/VCR OUT jacks. VIDEO IN jacks RCA/phono jack connections for the VIDEO input. MONITOR OUT video jack RCA/phono video jack connection for your TV. AC IN Connect the supplied AC power cable. VSX-50...

  • Page 103: Remote Control

    Use to select a SURROUND mode for the current source. ADVANCED SURROUND Use to select an ADVANCED SURROUND mode for DVD RECEIVER the current source. MUTE Press to mute all output. Press again (or adjust the volume using the MASTER VOLUME control) to restore the sound. VSX-50...

  • Page 104: Resetting All Remote Control Settings

    15 RECEIVER SETUP select button code (manufacturer) Press to access the RECEIVER SETUP menu to make n/a (020) Pioneer DV-50A detailed receiver settings. (EX-500 DVD player) 16 Cursor keys and ENTER TV/SAT DVD (Pioneer) Use to navigate menus and select options/execute commands.

  • Page 105: Resetting The System

    Center: 0 dB Surround: 0 dB Surround Back: 0 dB Subwoofer: 0 dB SR+ mode Note • The default settings for the remote control to control other components can be found in Using the remote control with other components. VSX-50...

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