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Pioneer VSX-49TXi Service Manual

Audio/video multi-channel receiver
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Download this manual See also: Service Manual
AUDIO/VIDEO MULTI-CHANNEL RECEIVER
VSX-49TXi
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Model
Type
VSX-49TXI
KU/CA
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 2002
http://receiverfaq.ru/
STANDBY/ON
OFF
ON
INPUT SELECTOR
Power Requirement
AC120V
4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan
AUDIO/VIDEO MULTI-CHANNEL AMPLIFIER
VSX-49TXi
LISTENING MODE SELECTOR
MAC3
STANDBY
VIDEO
AUDIO
CD-R/
MULTI CH
DVD/LD
TV/DVD
SAT
VIDEO
VCR
VCR2
VCR3
CD
TAPE1/MD
TUNER
PHONO
INPUT
MASTER VOLUME
DOWN
UP
VSX-49TXi
ORDER NO.
RRV2644
Remarks
T-ZZR AUG. 2002 printed in Japan

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Summary of Contents for Pioneer VSX-49TXi

  • 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 2002 T-ZZR AUG.

  • Page 2: Block Diagram And Schematic Diagram

    DIR & DIT IC3441 AK5383VS DSP 1 & 2 IC3601-2/2 C/SW IC3602-2/2 DSP U-COM D/A Converter SBLOUT CN707 RF Demodulator ADCWDT AC DATA IC3401 TC9163AF A/D Mode Selector IC3481 AK5383VS IC3801-2/2 Back IC3802-2/2 D/A Converter (SB) ADSBDT AB DATA DSP ASSY VSX-49TXi...
  • Page 3 : Audio Signal Route (MR) (REC) : Audio Signal Route (C) : Audio Signal Route (REC) : Audio Signal Route (S) Same as the above circuit. (SB) (SB) : Audio Signal Route (SB) (SBL) : Audio Signal Route (SBL) DAC 10 ASSY VSX-49TXi...
  • Page 4 Selector (CY) +6dB AMP (Cb) 75Ω (Cb) (CY) IC2104 CVOUT (Cb) PDC084A CVIN COMPONENT Q2108 75Ω IC2107 (Cr) (Cr) TC74HC4051AFT (Cr) Video MR Function IC2502 IC2106-1/2 Selector (COMPOSITE) TC74LVX4052FT COMPOSITE ASSY OPA2652U Video Function +6dB AMP Selector (Cb, Cr) VSX-49TXi...
  • Page 5 TK15420M 0dB Buffer (OSD) (OSD) (CY) IC2859-3/3 TC74LVX4053FT IC2858-2/2 TK15420M 0dB Buffer IC2857-2/2 IC2853 TK15420M (Cb) TA1270BF V-CONVERT Chroma Decoder (CY) ASSY IC2858-1/2 (Cb) TK15420M 0dB Buffer 0dB Buffer (Cr) (Cr) IC2857-1/2 TK15420M (CY) (CY) (Cb) (Cb) (Cr) (Cr) VSX-49TXi...
  • Page 6 (11P) CN4811 CN5005 NJM78M15FA V+16 (8P) (8P) V-20 CN5003 CN5819 POWER REG. A+20 (24P) (24P) AMP (C) REG. ASSY V-16 IC5003 CN4804 CN4810 NJM79M15FA (9P) (9P) POWER AMP POWER AMP VR & PRE OUT (R) ASSY (BR) ASSY ASSY VSX-49TXi...
  • Page 7 V+20 V+5Z A-20V V-20 V-5Z V-CONVERT A-20V ASSY CN5816 CN3403 (30P) (30P) VC15I VC15I VC15 ANALOG IN & A/D VE15I VE15 ASSY VC5A VC5A VC5AA VC5F V+5D VE15I L3401 L3421 VC5D VC5D VC3A VC3F L3402 L3422 REG. IC3402 PQ3DZ13 VSX-49TXi...
  • Page 8 SACD_D0-D5 10-13 AYW7022 IC203 19,20 BU2370FV Flash ROM VCO (PLL) MCLK IC306 IC101 PE9014A PD5787A PROM RS232C 63-68 HOST CPU CN103 (7P) IC302 K4S641632F-TC75 IC401 64M SDRAM SM5816AF DSD Converter (SACD → LPCM) CLKC XTAL IC405 CY22381FC 512fs PLL VSX-49TXi...
  • Page 9 (SB) CN401 (22P) 1394_SPDIF IC405 TC74VHC257FT Multiplexer (SB) (SB) IE_BDT IE_CDT IE_SDT IE_FDT IC405 TC74VHC257FT Multiplexer IE_MCK : Audio Signal Route (F) : Audio Signal Route (C) : Audio Signal Route (S) (SB) : Audio Signal Route (SB) VSX-49TXi...

  • Page 10: Overall Wiring Diagram

    MIC AMP ASSY DSP DIODE ASSY (AWX7872) VOL ASSY (AWX7958) (AWX7870) POWER AMP (R) ASSY (AWX7883) POWER AMP (C) ASSY (AWX7884) POSISTER (R) ASSY (AWX7846) POWER AMP (G) ASSY (AWX7886) POWER AMP (BR) ASSY (AWX7885) VIDEO CONNECT ASSY (AWX7876) VSX-49TXi...
  • Page 11 TRANS (A) ASSY (AWX7838) POWER SW ASSY (AWX7840) POWER AMP (L) ASSY (AWX7882) AC PRIMARY ASSY (AWX7834) HEADPHONE ASSY (AWX7874) SP (B) ASSY SP (A) ASSY (AWX8151) (AWX8148) AC INLET ASSY FU1 : AEK-306 : ADX7395 (12A/125V) MOTHER ASSY (AWX8142) VSX-49TXi...

  • Page 12: Fm/Am Tuner Module

    3.3 FM/AM TUNER MODULE FM/AM TUNER MODULE (AXQ7237) (AM) (FM) (FM) (FM) (FM) (FM) (FM) (FM) (AM) (AM) (FM) (AM) VSX-49TXi...
  • Page 13 (TX) : AUDIO SIGNAL ROUTE (TUNER) (AM) : AM SIGNAL ROUTE (FM) : FM SIGNAL ROUTE CN2705 (AM) (AM) (TX) (TX) CN5802 (TX) (TX) (FM) (TX) : The power supply is shown with the marked box. VSX-49TXi...
  • Page 14 3.4 A/V I/O ASSY (MR) MR MUET ON : +4.3V (MR) OFF : -20V (MR) Volume (DVD) (DVD) (MIC) (MIC) (FV) (DVD) (DVD) (DVD) (REC) A/V Function Selector (REC) (REC) VSX-49TXi...
  • Page 15 Selector (DVD) : AUDIO SIGNAL ROUTE (DVD) (REC) : AUDIO SIGNAL ROUTE (REC) CN5820 (MR) : AUDIO SIGNAL ROUTE (MR) (MIC) : AUDIO SIGNAL ROUTE (MIC) : AUDIO SIGNAL ROUTE (F) (FV) : AUDIO SIGNAL ROUTE (FV) (REC) (REC) VSX-49TXi...
  • Page 16 3.5 COMPOSITE ASSY COMPOSITE ASSY (AWX7942) (DVD) (DVD) Video Function Selector (Composite) I/O Selector (Composite) Video MR Function Selector (Composite) Clamp REC OUT Selector (Composite) VSX-49TXi...
  • Page 17 (DVD) : VIDEO SIGNAL ROUTE (DVD) : VIDEO SIGNAL ROUTE (OSD) : VIDEO SIGNAL ROUTE (OSD) 6dB AMP. Input-Selector (OSD) (OSD) Port Expander (OSD) Port Expander : The power supply is shown with the marked box. CN5822 VSX-49TXi...

  • Page 18: S-Video Assy

    3.6 S-VIDEO ASSY Video Video Function Function Selector Selector Port Expander Sync. Sep. REC OUT REC OUT Selector (C) Selector (Y) VSX-49TXi...
  • Page 19 : Y SIGNAL ROUTE : C SIGNAL ROUTE (OSD) (OSD) : VIDEO SIGNAL ROUTE (OSD) S-VIDEO ASSY (AWX8159) S/OSD SW 6dB AMP. S/OSD SW DC SW (OSD) CN3302 CN5823 : The power supply is shown with the marked box. VSX-49TXi...
  • Page 20 3.7 V-CONVERT ASSY MN1093NF Y/C Sep. Clock Gen. (CY) 0dB Buffer (Cb) (OSD) (Cr) (CY) (Cr) CHROMA Decoder (Cb) (CY) (Cb) 0dB Buffer VSX-49TXi...
  • Page 21 (Cr) (CY) (Cr) : Y SIGNAL ROUTE (COMPONENT) (Cb) : Cb SIGNAL ROUTE (COMPONENT) 0dB Buffer (Cr) : Cr SIGNAL ROUTE (COMPONENT) (OSD) : VIDEO SIGNAL ROUTE (OSD) : The power supply is shown with the marked box. CN5825 VSX-49TXi...
  • Page 22 3.8 COMPONENT ASSY (CY) (CY) (CY) (CY) (Cb) (Cb) (Cr) Video Function Selector (CY) (CY) (Cr) (Cb) (Cb) (Cr) (Cr) (Cr) (Cb) Video Function Selector (Cb, Cr) Port Expander CN5824 : The power supply is shown with the marked box. VSX-49TXi...
  • Page 23 (CY) : VIDEO SIGNAL ROUTE : Y SIGNAL ROUTE (COMPONENT) (Cb) : Cb SIGNAL ROUTE (COMPONENT) : VIDEO SIGNAL ROUTE (Y) (Cr) : VIDEO SIGNAL ROUTE (C) : Cr SIGNAL ROUTE (COMPONENT) CN3303 (OSD) : VIDEO SIGNAL ROUTE (OSD) VSX-49TXi...
  • Page 24 CN1206 PHONES (FV) : AUDIO SIGNAL ROUTE (FV) MIC & OPT ASSY (AWX7875) DIGITAL CN5804 (MIC) SETUP MIC AMP (MIC) (MIC) (MIC) (MIC) (FV) (FV) (FV) (FV) (FV) (FV) (FV) FRONT A/V ASSY (AWX8189) GNDS H I J K VSX-49TXi...
  • Page 25 VIDEO CONNECT ASSY (AWX7876) CN2852 MIC AMP ASSY (AWX7872) (MIC) (MIC) (MIC) (MIC) (FV) (FV) CN5806 (FV) VSX-49TXi...
  • Page 26 3.10 ANALOG IN & A/D ASSY(1/3) ANALOG IN & A/D ASSY (AWX7878) (PH) (PH) (PH) (TX) (TX) (TX) (CD) (PH) (CD) (CD) (CD) (TX) (TX) (TX) (TX) (REC) (REC) (REC) Audio Function Selector VSX-49TXi...
  • Page 27 : AUDIO SIGNAL ROUTE (PHONE) (SB) (CD) : AUDIO SIGNAL ROUTE (SBL) : AUDIO SIGNAL ROUTE (CD) (TX) (MR) : AUDIO SIGNAL ROUTE (MR) : AUDIO SIGNAL ROUTE (TUNER) (FL) (REC) : AUDIO SIGNAL ROUTE (FL) : AUDIO SIGNAL ROUTE (REC) VSX-49TXi...
  • Page 28 3.11 ANAALOG IN & A/D ASSY(2/3) ANALOG IN & A/D ASSY (AWX7878) INPUT ON : +15V OFF : -15V : The power supply is shown with the marked box. VSX-49TXi...
  • Page 29 +3.3V Front A/D Converter (SB) (SB) C/SW A/D Converter : AUDIO SIGNAL ROUTE (F) : AUDIO SIGNAL ROUTE (SL) (SB) : AUDIO SIGNAL ROUTE (C) : AUDIO SIGNAL ROUTE (SBL) VSX-49TXi...
  • Page 30 3.12 ANAALOG IN & A/D ASSY(3/3) INPUT ON : +15V OFF : -15V (SB) (SB) (SB) (SB) (SB) (SB) (SB) VSX-49TXi...
  • Page 31 ANALOG IN & A/D ASSY (AWX7878) : AUDIO SIGNAL ROUTE (SL) (SB) : AUDIO SIGNAL ROUTE (SBL) Surround A/D Converter (SB) (SB) (SB) (SB) Surround Back A/D Converter (SB) (SB) VSX-49TXi...
  • Page 32 S3090 : TAPE2 MONITOR S3091 : VIDEO SELECT S3092 : DIGITAL NR S3093 : CLASS S3094 : - STATION TUNER S3095 : + S3096 : LISTENING CH SELECT S3097 : CONTROL MULTI ROOM S3098 : ON/OFF & SOURCE CN1903 CN5807 VSX-49TXi...
  • Page 33 DISPLAY ASSY (AWX8140) FL DISPLAY MULTI JOG ASSY (AWX7869) VOL ASSY (AWX7870) REMOTE RECEIVER UNIT Remote Signal Control INPUT SEL ASSY (AWX7868) M N O P VSX-49TXi...
  • Page 34 3.14 VR & PRE OUT ASSY(1/3) VR & PRE OUT ASSY (AWX7888) (SB) (SB) (SB) Analog Phantom (SB) (SB) (SB) (SB) (SB) VSX-49TXi...
  • Page 35 : The power supply is shown with the marked box. J4004 CN4811 (SB) (SB) Mode Selector CN5819 2/3, 3/3 : AUDIO SIGNAL ROUTE (F) (SB) : AUDIO SIGNAL ROUTE (C) : AUDIO SIGNAL ROUTE (S) (SB) : AUDIO SIGNAL ROUTE (SB) VSX-49TXi...
  • Page 36 3.15 VR & PRE OUT ASSY(2/3) VR & PRE OUT ASSY (AWX7888) Pre-Amp. Front Main Volume C/SW Main Volume VSX-49TXi...
  • Page 37 : AUDIO SIGNAL ROUTE (F) : AUDIO SIGNAL ROUTE (C) AMUTE2 ON : +3.4V OFF : -20V VSX-49TXi...
  • Page 38 3.16 VR & PRE OUT ASSY(3/3) Pre-Amp. Surround Main Volume (SB) (SB) (SB) (SB) (SB) (SB) Surround Back Main Volume VSX-49TXi...
  • Page 39 : AUDIO SIGNAL ROUTE (C) : AUDIO SIGNAL ROUTE (S) (SB) VR & PRE OUT ASSY (AWX7888) : AUDIO SIGNAL ROUTE (SB) AMUTE2 ON : +3.4V OFF : -20V (SB) (SB) (SB) Surround Back Selector (SB) (SB) (SB) (SB) (SB) (SB) VSX-49TXi...
  • Page 40 : AUDIO SIGNAL ROUTE (F) (FV) : AUDIO SIGNAL ROUTE (FV) : AUDIO SIGNAL ROUTE (C) : AUDIO SIGNAL ROUTE (S) (SB) : AUDIO SIGNAL ROUTE (SB) (TX) : AUDIO SIGNAL ROUTE (TUNER) MOTHER ASSY (AWX8142) (TX) (TX) Reset CN3201 CN3207 CN3001 VSX-49TXi...
  • Page 41 (MR) (SB) (SB) (FV) (REC) (SB) CN2101 (MR) (MIC) (TX) (SB) (SB) CN2002 (SB) Mute Control (SB) 3V → 5V Converter (SB) Buffer : The power supply is shown with the marked box. VSX-49TXi...
  • Page 42 3.18 DSP ASSY(1/5) CN4005 CN5809 DSP ASSY (AWK7762) 3.3V Port Expander Port Expander (SB) CN5810 CN5811 VSX-49TXi...
  • Page 43 (SB) Flash ROM : AUDIO SIGNAL ROUTE (DIGITAL) : AUDIO SIGNAL ROUTE (F) : AUDIO SIGNAL ROUTE (C) : AUDIO SIGNAL ROUTE (S) (SB) : AUDIO SIGNAL ROUTE (SB) : The power supply is shown with the marked box. VSX-49TXi...
  • Page 44 3.19 DSP ASSY(2/5) VSX-49TXi...
  • Page 45 DSP ASSY (AWK7762) : AUDIO SIGNAL ROUTE (DIGITAL) RF Demodulator SRAM VSX-49TXi...
  • Page 46 3.20 DSP ASSY(3/5) DSP ASSY (AWK7762) Selector VSX-49TXi...
  • Page 47 : AUDIO SIGNAL ROUTE (C) : AUDIO SIGNAL ROUTE (DIGITAL) : AUDIO SIGNAL ROUTE (S) (SB) : AUDIO SIGNAL ROUTE (F) : AUDIO SIGNAL ROUTE (SB) Counter Selector Selector (SB) (SB) (SB) Selector Selector (SB) VSX-49TXi...
  • Page 48 3.21 DSP ASSY(4/5) DSP ASSY (AWK7762) (SB) (SB) VSX-49TXi...
  • Page 49 (SB) (SB) : AUDIO SIGNAL ROUTE (F) : AUDIO SIGNAL ROUTE (C) : AUDIO SIGNAL ROUTE (S) (SB) : AUDIO SIGNAL ROUTE (SB) : The power supply is shown with the marked box. VSX-49TXi...
  • Page 50 3.22 DSP ASSY(5/5) (SB) (SB) (SB) (SB) (SB) (SB) Selector (SB) Selector (SB) (SB) (SB) VSX-49TXi...
  • Page 51 DSP ASSY (AWK7762) SRAM SRAM 3.3V (SB) 1.8V DSP2 (SB) : AUDIO SIGNAL ROUTE (F) : AUDIO SIGNAL ROUTE (C) : AUDIO SIGNAL ROUTE (S) (SB) : AUDIO SIGNAL ROUTE (SB) VSX-49TXi...
  • Page 52 3.23 DSP3 ASSY DSP3 ASSY (AWK7727) 3.3V (SB) (SB) (SB) (SB) CN708 CN709 VSX-49TXi...
  • Page 53 : AUDIO SIGNAL ROUTE (F) : AUDIO SIGNAL ROUTE (C) : AUDIO SIGNAL ROUTE (S) (SB) : AUDIO SIGNAL ROUTE (SB) (SB) (SB) : The power supply is shown with the marked box. VSX-49TXi...
  • Page 54 3.24 DAC10 ASSY(1/2) 3.3V DAC 10 ASSY (AWK7725) D/A Converter D/A Converter Front Digital Filter D/A Converter (SB) D/A Converter C/SW Digital Filter (SB) VSX-49TXi...
  • Page 55 : AUDIO SIGNAL ROUTE (F) : AUDIO SIGNAL ROUTE (C) : AUDIO SIGNAL ROUTE (S) : The power supply is shown with the marked box. (SB) : AUDIO SIGNAL ROUTE (SB) Gain Control Volume (SB) (SB) VSX-49TXi...
  • Page 56 3.25 DAC10 ASSY(2/2) D/A Converter D/A Converter Surround Digital Filter D/A Converter (SB) (SB) (SB) (SB) D/A Converter Surround Back Digital Filter (SB) VSX-49TXi...
  • Page 57 DAC 10 ASSY (AWK7725) : AUDIO SIGNAL ROUTE (S) (SB) : AUDIO SIGNAL ROUTE (SB) Gain Control Volume (SB) (SB) (SB) (SB) (SB) (SB) (SB) VSX-49TXi...
  • Page 58 3.26 POWER AMP(L) and POWER AMP(C) ASSYS POWER AMP (L) ASSY (AWX7882) Voltage Amp. AMUTE1 ON : +4.2V OFF : -20V Voltage Amp. (SB) Voltage Amp. (SB) (SB) (SB) (SB) POWER AMP (C) ASSY (AWX7884) CN4806 VSX-49TXi...
  • Page 59 : AUDIO SIGNAL ROUTE (SB) Load Current Amp. Det. Current Amp. Over Load Det. Current Amp. DC Det. Current Amp. To C1 To C2 Over Load Det. (SB) (SB) (SB) Current Amp. (SB) (SB) (SB) Current Amp. Over Load Det. Current Amp. VSX-49TXi...
  • Page 60 3.27 POWER AMP(R), POWER AMP(BR) and POWER AMP(G) ASSYS POWER AMP (R) ASSY (AWX7883) Voltage Amp. AMUTE1 ON : +4.2V OFF : -20V Voltage Amp. Voltage Amp. CN5005 J1201 POWER AMP (G) ASSY (AWX7886) POWER AMP (BR) ASSY X Y Z (AWX7885) VSX-49TXi...
  • Page 61 : AUDIO SIGNAL ROUTE (C) Over Load Current Amp. Det. Current Amp. Over Load Det. DC Det. Current Amp. Current Amp. To C1 To C2 Over Load Det. Current Amp. Current Amp. Over Load Det. Current Amp. J1902 VSX-49TXi...
  • Page 62 3.28 LOCAL SUPPLY ASSY LOCAL SUPPLY ASSY (AWX7887) 10.6V 11.7V -12.1V 11.7V -12.2V 26.6V -26.7V 63.4V -63.4V VSX-49TXi...
  • Page 63 REPLACE ONLY WITH SAME TYPE NO. 491001 FOR IC4036 J5806 MFD, BY LITTELFUSE INC. CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE ONLY WITH SAME TYPE NO. 4911.25 FOR IC4035 MFD, BY LITTELFUSE INC. CN5805 -20V CN5004 -56V VSX-49TXi...
  • Page 64 3.29 AC PRIMARY, POWER SW, SP(A), FL SUPPLY and STANDBY ASSYS CN5801 POWER SW ASSY (AWX7840) AC PRIMARY ASSY (AWX7834) 60Hz Port Expander CN1001 CN1005 J3301 CN1803 +46.6V FL SUPPLY ASSY (AWX7871) AB AC AE VSX-49TXi...
  • Page 65 : AUDIO SIGNAL ROUTE J4801 J4802 : AUDIO SIGNAL ROUTE (F) : AUDIO SIGNAL ROUTE (C) : AUDIO SIGNAL ROUTE (S) (SB) : AUDIO SIGNAL ROUTE (SB) SP (A) ASSY (AWX8148) Speaker Relay (SB) (SB) J4804 CN3002 STANDBY ASSY (AWX7901) VSX-49TXi...
  • Page 66 (AWX7958) AEK-306 (12A/125V) J4002 POSISTER (L) ASSY (AWX7844) CN4812 POSISTER (R) ASSY (AWX7846) CN4813 • NOTE FOR FUSE REPLACEMENT FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. CAUTION - REPLACE WITH SAME TYPE AND RATINGS ONLY. AG AH AI AJ VSX-49TXi...
  • Page 67 FU6 2A Speaker Relay FU7 2A FU8 2A FU5-FU8 : VEK1019 TRANS (B) ASSY DIODE ASSY (AWX8057) TRANS (A) (AWX7841) ASSY POWER FU10 1A/125V TRANSFORMER (AWX7838) : VEK1014 (ATS7320) To C1 FU9 1A/125V : VEK1014 To C2 5.9V AC VSX-49TXi...
  • Page 68 3.31 1394 MODULE(1/2) ASSY VSX-49TXi...
  • Page 69 1394 MODULE (AXQ7243) POWER SUPPLY, GND : The power supply is shown with the marked box. VSX-49TXi...
  • Page 70 3.32 1394 MODULE(2/2) ASSY 1394 MODULE (AXQ7243) (SB) (SB) (SB) (SB) VSX-49TXi...
  • Page 71 : The power supply is shown with the marked box. (SB) (SB) (SB) (SB) (SB) : AUDIO SIGNAL ROUTE (F) : AUDIO SIGNAL ROUTE (C) : AUDIO SIGNAL ROUTE (S) (SB) : AUDIO SIGNAL ROUTE (SB) VSX-49TXi...