Pioneer VSX-D912-S Service Manual
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Pioneer VSX-D912-S Service Manual

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AUDIO/VIDEO MULTI-CHANNEL RECEIVER
VSX-D912-S
VSX-D812-K
VSX-D812-S
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Model
Type
VSX-D912-S
MYXJIEW
VSX-D812-K
MYXJIEW
VSX-D812-S
MYXJIEW
VSX-D812-S
MYXJIFG
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
DVD/LD
TV/SAT
VCR/DVR
CD-R/
CD
TAPE/MD
TUNER
STANDBY
STANDBY / ON
PHONES
Power Requirement
AC220-230V
AC220-230V
AC220-230V
AC220-230V
4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan
VIDEO
ENTER
AUX
MASTER VOLUME
DOWN
PULL OPEN
VSX-D912-S
MULTI JOG
UP
ORDER NO.
RRV2745
Remarks
T-ZZK APR. 2003 printed in Japan

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Summary of Contents for Pioneer VSX-D912-S

  • 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 2003 T-ZZK APR.

  • 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-D912-S...

  • Page 4: Table Of Contents

    7.3 EXPLANATION ............................83 7.3.1 POWER ON AND OFF INITIAL TIMING CHART.................. 83 7.3.2 IC DATA TRANSMISSION TIMING CHART ..................85 7.3.3 DETECTION CIRCUIT.......................... 86 7.3.4 AMPLIFIER SYSTEM PROTECTION OPERATION SPECIFICATION ..........87 7.4 CLEANING............................... 87 8. PANEL FACILITIES ............................88 VSX-D912-S...

  • Page 5: Specifications

    [DIN (Continuous rated power output/50 mW)] CD, VCR/DVR, CD-R/TAPE/MD, DVD/LD, TV/SAT..96 dB • Video Section Input (Sensitivity/Impedance) VCR/DVR, DVD/LD, TV/SAT......1 Vp-p/75 Ω Output (Level/Impedance) VCR/DVR, MONITOR OUT........1 Vp-p/75 Ω Frequency Response VCR/DVR, DVD/LD, TV/SAT ⇒ MONITOR......5 Hz to 7 MHz –3 Signal-to-Noise Ratio............55 dB VSX-D912-S...

  • Page 6: Cleaning The Unit

    SETUP SLEE P RETURN BAND RF ATT DISPL AY CLASS D.ACCESS DISC ENTER TV CONTROL CHANNEL CHANNEL VOLUME RECEIVER AM loop antenna FM wire antenna AA size IEC R6 Remote control unit (ATB7009) (ADH7030) Dry cell batteries (x2) (XXD3054) VSX-D912-S...

  • Page 7: Exploded Views And Parts List

    XRC3082 NSP 8 Literature Bag AHG1180 (French/German) Packing Sheet AHG7069 Left Pad R6 XHA3134 (2) CONTRAST TABLE VSX-D912-S/MYXJIEW, VSX-D812-K/MYXJIEW, VSX-D812-S/MYXJIEW and MYXJIFG are constructed the same except for the following: VSX-D912-S/ VSX-D812-K/ VSX-D812-S/ VSX-D812-S/ Mark Symbol and Description MYXJIEW MYXJIEW...

  • Page 8: Exterior Section

    2.2 EXTERIOR SECTION EXCEPT VSX-D812-K 62 55 27 58 34 35 42(2/2) NON-CONTACT SIDE CONTACT SIDE Refer to "2.3 FRONT PANEL SECTION". 42(1/2) VSX-D912-S...
  • Page 9 J43 19P F.F.C/30V XDD3126 Screw BBT30P100FCC J31 17P F.F.C/30V XDD3118 J35 19P F.F.C/30V XDD3101 (2) CONTRAST TABLE VSX-D912-S/MYXJIEW, VSX-D812-K/MYXJIEW, VSX-D812-S/MYXJIEW and MYXJIFG are constructed the same except for the following: VSX-D912-S/ VSX-D812-K/ VSX-D812-S/ VSX-D812-S/ Mark Symbol and Description MYXJIEW MYXJIEW...

  • Page 10: Front Panel Section

    2.3 FRONT PANEL SECTION Lubricating Oil VSX-D912-S ONLY GYA1001 VSX-D812-K, VSX-D812-S ONLY VSX-D912-S ONLY VSX-D912-S...
  • Page 11 PPZ30P100FMC Panel Stay See Contrast table(2) Earth Plate R5 HP XNG3066 Door Spring R6 XBK3002 (2) CONTRAST TABLE VSX-D912-S/MYXJIEW, VSX-D812-K/MYXJIEW, VSX-D812-S/MYXJIEW and MYXJIFG are constructed the same except for the following: VSX-D912-S/ VSX-D812-K/ VSX-D812-S/ VSX-D812-S/ Mark Symbol and Description MYXJIEW...

  • Page 12: Block Diagram And Schematic Diagram

    MOTOROLA IC104 (for DECODE) IC8201 AK4114VQ IC104 IC8601 IS61LV6416 -12T(S-RAM) IC8602 CN951 IS63LV1024 -12T(S-RAM) IC106 IC8603 CN1902 PD8116A (ROM) CN1901 CN8017 CN8007 CN109 IC303 CN307 CN105 IC302 IC302 IC304 IC352 NJM2595M (Y SEL) CN901 NJM2595M IC351 (C SEL) CN354 VSX-D912-S...
  • Page 13 IC301 POWER AMP Q702 IC601, IC602 +BVL D51-D54 (COMPONENT SEL) D702 RY51 NJM2595M -BVL CN901 CN301 FL AC AC IN CN401 FL AC T+12V IC805 +12V POWER IC801 D801–D804 TRANSFORMER CN101 -12V IC802 D721–D724 D+5V IC803 CN101 A+5V IC804 VSX-D912-S...

  • Page 14: Overall Wiring Connection Diagram

    (AWX1082) ASSY ASSY BOARD (XWZ3660) (VSX-D912 ASSY : XWK3101) (XWZ3665) (VSX-D812 1/2, : XWK3096) 1/3, VIDEO 2/3, ASSY (XWZ3647) REGULATOR ASSY DIGITAL IN (XWZ3676) ASSY (VSX-D912 FM/AM TUNER : XWZ3659) MODULE (VSX-D812 6CH IN ASSY (AXQ7232) : XWZ3658) (XWZ3650) VSX-D912-S...
  • Page 15 POWER SW ASSY (XWZ3651) VSX-D912 Only H.P. ASSY (XWZ3654) TRANS4 TRANS3 ASSY ASSY (XWZ3662) (XWZ3687) TRANS1 TRANS2 ASSY ASSY (XWZ3684) (XWZ3681) 1/2, AMP& PRIMARY ASSY (XWZ3670) PRE-OUT ASSY (XWZ3663) VDG1080 VSX-D912-S...

  • Page 16: Main Assy (1/3)

    3.3 MAIN ASSY (1/3) VSX-D812, only VSX-D912 only CN804 VSX-D912-S...
  • Page 17 MAIN ASSY (VSX-D912 : XWK3101) (VSX-D812 : XWK3096) : The power supply is shown with the marked box. VSX-D912-S...

  • Page 18: Main Assy (2/3)

    3.4 MAIN ASSY (2/3) MAIN ASSY (VSX-D912 : XWK3101) (VSX-D812 : XWK3096) VSX-D912-S...
  • Page 19 VSX-D912-S...

  • Page 20: Main Assy (3/3)

    3.5 MAIN ASSY (3/3) VSX-D812, only VSX-D812/MY VSX-D912/MY : The power supply is shown with the marked box. CN802 VSX-D912-S...
  • Page 21 CN401 MAIN ASSY (VSX-D912 : XWK3101) (VSX-D812 : XWK3096) CN8012 VSX-D912-S...

  • Page 22: Dsp Assy (1/2)

    3.6 DSP ASSY (1/2) NO USE NO USE NO USE NO USE NO USE VSX-D912-S...
  • Page 23 AWX1082 : NO USE DSP ASSY (AWX1082) CN805 : The power supply is shown with the marked box. VSX-D912-S...

  • Page 24: Dsp Assy (2/2)

    3.7 DSP ASSY (2/2) CN112 VSX-D912-S...
  • Page 25 DSP ASSY (AWX1082) AWX1082 : NO USE VSX-D912-S...

  • Page 26: Amp & Primary (1/2), Trans2 And Trans3 Assys

    3.8 AMP & PRIMARY (1/2), TRANS2 and TRANS3 ASSYS AMP&PRIMARY ASSY (XWZ3670) MYXJI MYXJI VSX-D912-S...
  • Page 27 CN1575 REPLACE ONLY WITH SAME TYPE NO. 491010 FOR IC604, IC605, IC606, AND IC607 MFD, BY LITTELFUSE INC. • NOTE FOR FUSE REPLACEMENT FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. CAUTION - REPLACE WITH SAME TYPE AND RATINGS ONLY. VSX-D912-S...

  • Page 28: Amp & Primary (2/2), Reg. , Amp Input And Trans1 Assys

    3.9 AMP & PRIMARY (2/2), REG. , AMP INPUT and TRANS1 ASSYS REGULATOR ASSY (XWZ3676) CN8007 CN302 VSX-D912-S...
  • Page 29 NO. 491.500 FOR IC52 MFD, BY LITTELFUSE INC. TRANS1 ASSY (XWZ3681) REK1027 (T3.15A) LIVE NEUTRAL AC POWER CORD VDG1080 AMP&PRIMARY ASSY (XWZ3670) • NOTE FOR FUSE REPLACEMENT FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. CAUTION - REPLACE WITH SAME TYPE AND RATINGS ONLY. VSX-D912-S...

  • Page 30: Video, 6Ch In, Board To Board And S. Video Assys

    3.10 VIDEO, 6CH IN, BOARD TO BOARD and S. VIDEO ASSYS VIDEO ASSY (XWZ3647) CN105 6CH IN ASSY CN104 (XWZ3650) VSX-D912, VSX-D812 VSX-D912-S...
  • Page 31 BOARD TO BOARD ASSY (XWZ3665) CN901 S. VIDEO ASSY (XWZ3660) MYXJIEW, MYXJIFG VSX-D912-S...

  • Page 32: Front, R. Encoder And Power Sw Assys

    3.11 FRONT, R. ENCODER and POWER SW ASSYS R.ENCODER ASSY S511 : ENTER VSX-D912, S512 : MULTI JOG DIAL VSX-D812 R.ENCODER ASSY S513 : MASTER VOLUME (XWZ3653) FRONT ASSY (XWZ3648) CN101 VSX-D912-S...
  • Page 33 S459 : STANDARD S460 : TUNING + S461 : TUNING - MYXJI S462 : STATION + S463 : STATION - S464 : TUNER EDIT S465 : CLASS S466 : EON MODE S467 : PTY SEARCH S468 : MPX S469 : BAND VSX-D912-S...

  • Page 34: Trans4, F.video, H.p., Pre., D.in And F.opt&Mic Assys

    REPLACE ONLY WITH SAME TYPE NO. 491.630 FOR IC891 AND IC892 MFD, BY LITTELFUSE INC. CN251 H.P. ASSY (XWZ3654) TRANS4 POWER ASSY TRANSFORMER (XWZ3662) PRE-OUT ASSY DIGITAL IN ASSY (XWZ3663) (VSX-D912 : XWZ3659) (VSX-D812 : XWZ3658) VSX-D912 Only P Q R S T VSX-D912-S...
  • Page 35 FRONT OPTICAL & MICASSY (XWZ3656) VSX-D912 Only CN1902 VSX-D912-S...

  • Page 36: Fm/Am Tuner Module

    3.13 FM/AM TUNER MODULE FM/AM TUNER MODULE (AXQ7232) FM FRONT END (FM) (FM) (FM) (FM) (AM) (AM) (AM) MW RF TUNING BLOCK (FM) (AM) VSX-D912-S...
  • Page 37 : The power supply is shown with the marked box. (TX) : AUDIO SIGNAL ROUTE (TUNER) (AM) : AM SIGNAL ROUTE (FM) : FM SIGNAL ROUTE CN103 (AM) (TX) (FM) (TX) (TX) (TX) (FM) (FM) (TX) (AM) VSX-D912-S...

  • Page 38: Pcb Connection Diagram

    W643 GNDA W644 IC803 C807 CN111 CN109 C801 W646 D +5V C802 CN302 W657 C804 CN803 W633 REG -B IC802 W743 W631 -12V W645 C806 W632 W634 REG +B C803 IC801 CN801 W611 +12V W610 CN53 CMKS-P3X KNIFE SPACE VSX-D912-S...

  • Page 39: Trans2, Trans3, Trans1 And Trans4 Assys

    SIDE A (XNP3064-C) (XNP3064-C) SIDE A SIDE B POWER TRANSFORMER TRANS1 XWZ3681 TRANS2 ASSY REMPLACER LE IC LINKS COMME INDIQUE. DE CHEZ LITTELFUSE INC. (XNP3066-B) ATTENTION SIDE A BROWN BLUE PRIMARY (XNP3066-B) TRANS1 ASSY SIDE A D E H P VSX-D912-S...

  • Page 40: Main Assy

    C322 XWK3091 C326 GNDA XWK3092 XWK3099 Q322 R328 R324 GNDA Q322 C324 R326 XWK3093 XWK3100 GNDA C139 XWK3094 XWK3101 GNDA GNDA XWK3095 XWK3102 XWK**** XWK3096 XWK3104 I.C.T. XWK**** XWK3097 XWK3105 CMKM-P3X XWK3098 XWK**** CN106 CN108 CN107 CN254 CN952 CN901 VSX-D912-S...
  • Page 41 R294 C218 C208 R322 R296 C205 R206 C133 R298 R207 C204 C322 C298 C207 R204 C155 GNDA R205 R202 C203 C136 R203 C167 C165 Q322 R201 GDAC C135 C138 F.C. CN111 CN109 GNDA C137 CN109 CN111 (XNP3067-B) CN804 CN802 VSX-D912-S...
  • Page 42 MAIN ASSY CN104 CN105 CN103 Q5003 Q5004 XNP3067 IC5001 Q386 GNDU Q9003 Q5002 Q361 IC109 IC109 IC107 Q230 IC107 Q230 Q229 Q229 Q9001 Q231 Q231 Q232 Q232 Q9002 IC101 IC101 Q9007 Q168 Q167 Q168 Q167 GNDA C191 CN111 CN109 VSX-D912-S...
  • Page 43 GNDU NECK GNDU DC. DET OL.DET B.DET GNDA AMUTE Q9002 GNDA F.L. GNDA GNDA GNDA F.R. GNDA XWK3096 Q9007 GNDA GNDA XWK3101 XWK3097 XWK3102 XWK3093 XWK3098 XWK**** XWK3094 XWK3104 XWK3091 XWK3099 XWK**** XWK3095 XWK3105 XWK3092 XWK3100 XWK**** CN107 (XNP3067-B) VSX-D912-S...

  • Page 44: Dsp Assy

    4.4 DSP ASSY SIDE A SIDE A DSP ASSY (ANP2022-B) VSX-D912-S...
  • Page 45 R8515 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 C8013 C8606 C8605 C8608 C8607 (ANP2022-B) VSX-D912-S...

  • Page 46: Amp & Primary And Amp Input Assys

    Q651 Q652 Q631 C664 GNDA GNDA Q603 IC604 IC606 GNDA Q632 R688 GNDA R689 C657 Q653 C607 IC603 W508 GNDA C634 D682 R631 W507 C684 IC602 IC601 W512 C658 IC602 W505 D681 W509 W502 C631 W501 26 25 W504 VSX-D912-S...
  • Page 47 REPLACE IC LINKS R752 D751 AS MARKED.MFD.BY LITTELFUSE INC. R616 D752 R618 ATTENTION D723 D604 C608 C607 D602 C770 REMPLACER LE IC W512 IC601 D721 LINKS COMME INDIQUE. KN601 DE CHEZ LITTELFUSE INC. D722 W513 W511 CN53 CN53 CN801 D724 VSX-D912-S...

  • Page 48: Front, R. Encoder, Power Sw And H

    XWZ3651 1551 2 GNDU 1 FUNCAV HCI40HI XWZ3654 S504 S503 S502 S501 1551 R1552 DVD/LD VCR/DVR VIDEO TV/SAT HP R KN1551 S506 S508 S509 S507 JA1551 HP L R1551 CDR/TAPE TUNER (XNP3064-C) HCI40HI (XNP3064-C) S505 POWER M O R VSX-D912-S...
  • Page 49 QUICK SETUP DIRECT SELECT LOUDNESS (XNP3064-C) R.ENCODER 1 LED 2 ENTER S512 3 FENC A 4 FENC B 5 GNDU 6 VENC B 7 VENC A S511 W291 ENTER W289 HCI40HI D512 XWZ3652 XWZ3653 W292 W293 S513 R.ENCODER ASSY (XNP3064-C) VSX-D912-S...
  • Page 50 MIDNIGHT/ SIGNAL QUICK SETUP TONE SBch MODE SPEAKER STEREO/ LOUDNESS SELECT DIRECT (XNP3064-C) R.ENCODER 1 LED 2 ENTER 3 FENC A 4 FENC B 5 GNDU 6 VENC B 7 VENC A ENTER HCI40HI XWZ3652 XWZ3653 R.ENCODER ASSY (XNP3064-C) VSX-D912-S...
  • Page 51 1 FUNCAV XWZ3654 R504 R503 R502 VIDEO VCR/DVR TV/SAT DVD/LD Q1551 Q1551 R1556 R1557 C1552 R507 R508 R506 HPSW uGND uGND TUNER CDR/TAPE R1555 Q1552 C1557 HP GND Q1552 R501 C1558 C1556 (XNP3064-C) (XNP3064-C) POWER R505 M O R VSX-D912-S...

  • Page 52: Board To Board, Digital In, Video And 6Ch In Assys

    SB OUT 4053A W139 FURNITURE W169 jp150a CN104 SRIN C338 SROUT SWDET AMUTE CN803 C310 Q302 Q302 Q301 CN301 Q301 CN301 (XNP3064-C) CN390 BOARD TO BOARD HCI40HI BOARD TO BOARD ASSY CN390 CN391 CN351 CN392 (XNP3064-C) I J K T VSX-D912-S...
  • Page 53 C304 R301 C333 R306 C378 Q304 Q303 R393 IC301 -12V C339 +12V SW OUT C340 SB OUT 4053INH D304 4053A FURNITURE SRIN SROUT SWDET AMUTE C311 D303 (XNP3064-C) CN301 CN390 BOARD TO BOARD ASSY (XNP3064-C) I J K T VSX-D912-S...

  • Page 54: S.video, F.video, F.opt&Mic And Pre-Out Assys

    CN391 CN952 CN951 CN901 Q952 FRONT VIDEO C905 XWZ3655 IC952 CN951 CN901 C903 XWZ3696 CN952 JA902 XWZ3699 W238 W214 W215 HCI40HI FRONT OPTICAL (XNP3064-C) FRONT VIDEO ASSY & MIC ASSY L Q S V L Q S V (XNP3064-C) VSX-D912-S...
  • Page 55 FRONT VIDEO XWZ3655 XWZ3696 C915 R906 R960 R904 R907 R961 C916 C965 R903 R901 IC951 R905 R902 C901 C902 C913 C914 XWZ3699 FRONT OPTICAL (XNP3064-C) FRONT VIDEO ASSY & MIC ASSY (XNP3064-C) L Q S V L Q S V VSX-D912-S...

  • Page 56: Fm/Am Tuner Module

    4.9 FM/AM TUNER MODULE SIDE A SIDE B FM/AM TUNER MODULE SIDE A CN103 CN201 (ANP7338-B) Q202 FM/AM TUNER MODULE SIDE B (ANP7338-B) Q201 IC201 Q203 Q205 IC202 Q204 VSX-D912-S...

  • Page 57: Pcb Parts List

    Not used R9040 Not used RS1/16S473J CN108 5P FFC CONNECTOR 52045-0545 Not used DIGITAL IN ASSY XWZ3659 and XWZ3658 are constructed the same except for the following : Mark Symbol and Description XWZ3659 XWZ3658 CN1902 CONNECTOR POST B5B-PH-K-S Not used VSX-D912-S...
  • Page 58 Mark No. Description Part No. Mark No. Description Part No. C213, C214, C249, C250 CEAT100M50 • PARTS LIST FOR VSX-D912-S C269, C270, C290, C301–C306 CEAT100M50 C321, C322, C341, C342 CEAT100M50 COMPLEX ASSY C361, C362, C380, C382, C384 CEAT100M50 OTHERS C5015...
  • Page 59 ACG7020 C8608,C8609,C8702,C8705,C8901 CKSRYB104K16 C611–C614, C636, C637 CCPUCH6R8K50 C8903 CKSRYB104K16 C661–C664, C686, C687 CCPUCH6R8K50 C8110,C8516 CKSRYB105K6R3 C615, C616, C638, C665, C666 CEANP2R2M50 C8514 CKSRYB333K16 C688 CEANP2R2M50 C8203 CKSRYB473K50 C775, C776 CEANP470M50 C712 CEAT101M10 RESISTORS C609, C610, C635, C659, C660 CEAT101M16 VSX-D912-S...
  • Page 60 851 7P CABLE HOLDER XKP3047 SEMICONDUCTORS IC301 NJM2595M TRANS3 ASSY Q302 2SA1515 Q303 2SC3326 TRANS3 ASSY has no service part. Q301 2SC3377 D301, D302, D305, D306 1SS355 REGULATOR ASSY D307 UDZS5.1B SEMICONDUCTORS D303, D304 UDZS6.2B IC803, IC804 NJM78M05FA IC801, IC805 NJM78M12FA VSX-D912-S...
  • Page 61 R. ENCODER ASSY S. VIDEO ASSY SEMICONDUCTORS SEMICONDUCTORS D512 SLR-343BBT IC351, IC352 NJM2595M D511 UDZS5.6B D351–D354 1SS355 SWITCHES AND RELAYS CAPACITORS S511 ASG7013 C375, C376 CCSRCH470J50 S513 ROTARY ENCODER XSX3005 C352, C355, C358, C361–C363 CEAT470M25 S512 ROTARY ENCODER XSX3006 VSX-D912-S...
  • Page 62 RS1LMF151J KN951 WRAPPING TERMINAL VNF1084 > R1551,R1552 RS2LMF331J Other Resistors RS1/16S###J FM/AM TUNER MODULE OTHERS SEMICONDUCTORS 1551 6P CABLE HOLDER 51048-0600 IC201 BA1451F JA1551 HEADPHONE JACK RKB1014 IC202 LC72131MD KN1551 EARTH METAL FITTING VNF1084 Q201, Q204, Q205, Q601 2SC2412K VSX-D912-S...
  • Page 63 RD1/4PU391J R103, R104 RS1/10S221J Other Resistors RS1/16S###J OTHERS CN201 13P CONNECTOR 52044-1345 BN201 2P TERMINAL WITH PAL AKA7002 (SHIELD CASE T) ANK7072 (SHIELD CASE B) ANK7073 X201 CRYSTAL RESONATOR ASS1093 (7.2MHz) FM FRONTEND AXF7005 AM RF TUNING BLOCK AXX7072 VSX-D912-S...

  • Page 64: 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-D912-S...

  • Page 65: General Information

    Diagnosis REGULATOR Assy AMP&PRIMARY Assy Heat Sink ×3 Note : The unit does not operate when the screws of Speaker Terminal are taken off from Rear Panel. Even if the FM/AM TUNER MODULE is disconnected, other functions can operate. VSX-D912-S...

  • Page 66: Pcb Location

    MAIN Assy AMP INPUT Assy FRONT VIDEO Assy TRANS 1 Assy TRANS 3 Assy TRANS 4 Assy R. ENCODER Assy FRONT Assy FRONT OPTICAL & MIC Assy (VSX-D912-S Only) H.P. Assy POWER SW Assy NOTE : This photograph is VSX-D812. VSX-D912-S...

  • Page 67: Parts

    RY-AC Boad DET P76/TA3OUT P35/A13 HP DET MIC DET P75/TA2IN/W P36/A14 RY_A 1394 RST P74/TA2OUT/W P37/A15 RY_C/R P40/A16 1394 CS P73/CTS2/RTS2/TA1IN/V RY_B 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 INPUT_ATT /TA0OUT VSX-D912-S...
  • Page 68 DIR DO Data input signal for communication with DIR/DAC P50/WRL/WR DIR CS Chip select signal for communication with DIR/DAC P47/CS3 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-D912-S...
  • Page 69 P02/D2 P01/D1 P00/D0 P107/AN7/KI3 P106/AN6/KI2 P105/AN5/KI1 P104/AN4/KI0 P103/AN3 P102/AN2 SIMUKE1 lnput 1 to switch region P101/AN1 SIMUKE2 lnput 2 to switch region AVSS AVSS Connect to VSS P100/AN0 VREF VREF Connect to VCC AVcc AVCC Connect to VCC P97/ADTRG/SIN4 VSX-D912-S...
  • Page 70 P20/SCK3 C-MOS P-CH FIP31/P37 DISP EN P00/INTP0 C-MOS P-CH FIP32/P40 NC(PD)(MULTIROOM SRIN) P01/INTP1 C-MOS P-CH FIP33/P41 STANDBY LED SR IN P02/T1 C-MOS P-CH FIP34/P42 AVSS P-CH FIP35/P43 KEY IN4 ANI3 COPM P-CH FIP36/P44 KEY IN3 ANI2 COMP P-CH FIP37/P45 VSX-D912-S...
  • Page 71 MULTI JOG(Left) P61/FIP49 EN B VOLUME JOG1(-) P60/FIP48 EN A VOLUME JOG1(+) P57/FIP47 P56/FIP46 TEST test mode input for checker P55/FIP45 P54/FIP44 P53/FIP43 P52/FIP42 1W WUP output wakeup signal to main u-com P51/FIP41 P50/FIP40 P47/FIP39 VOL LED LED Output P46/FIP38 VSX-D912-S...
  • Page 72 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-D912-S...
  • Page 73 7 BD3813KS (MAIN ASSY : IC108) • 6.1ch Audio Sound Processor Block Diagram GND8 INFRA TONE OUTSW INFLA GND7 INSWA OUTSR INSRA GND6 INSLA OUTSL INCA GND5 INSBA OUTC INFRB GND4 INFLB OUTSB INSWB INSRB GND3 INSLB INCB LOGIC INSBB VSX-D912-S...
  • Page 74 Rch treble filter terminal SRch DSP input terminal VINFR INSLB Rch volume Input terminal SLch DSP input terminal GOUTFR INCB Rch input gain output terminal Cch DSP input terminal VINFL INSBB Lch volume Input terminal SBch DSP input terminal VSX-D912-S...
  • Page 75 F 2ch input terminal BIAS Bias input terminal ING1 G1ch input terminal (-)Power supply terminal ING2 G2ch input terminal Serial date anlatch input terminal INH1 H 1ch input terminal Serial clock input terminal INH2 H 2ch input terminal Digital ground terminal DGND VSX-D912-S...
  • Page 76 Vin2 Vin2 MUTE MUTE Vin2 MUTE Vin3 Vin3 Vin3 MUTE Vin3 Vin3 Vin4 Vin4 Vin4 MUTE Vin4 Vin4 Vin4 Vin4 MUTE MUTE Vin4 MUTE Vin5 Vin5 Vin5 MUTE Vin5 Vin5 Vin5 Vin5 MUTE MUTE Vin5 MUTE MUTE MUTE MUTE VSX-D912-S...
  • Page 77 SDOUT SDOS BICK LOUT3 DATT SDTO SDIN SDTI1 SDOUT1 SDIN1 ROUT3 DA C DATT SDTI2 SDIN2 SDOUT2 SDTI3 SDIN3 SDOUT3 SDTI4 SDIN4 SDOUT4 LOUT4 DA C DATT ROUT4 DATT AK4529 Block Diagram (DIR and AC-3 DSP are external parts) VSX-D912-S...
  • Page 78 If the state of P/S or CAD0-1 changes, then the AK4529 must be reset by PDN. Test Pin This pin should be connected to DVSS. CAD1 Chip Address 1 Pin CAD0 Chip Address 0 Pin LOUT4 DAC4 Lch Analog Output Pin ROUT4 DAC4 Rch Analog Output Pin VSX-D912-S...
  • Page 79 2. The group 1 and 2 can be selected by DZFM3-0 bits if P/S = "L" and DZFE = "L". 3. This pin becomes OVF pin if OVFE bit is set to "1" at serial control mode. 4. All input pins should not be left floating. VSX-D912-S...
  • Page 80 Vref (16) RCLK Analog Power supply QUAL Bi-phase Differential 57kH decoder RDATA 1187.5Hz decoder (12) RDS/ARI Digital Power supply (11) Measurement Reference circuit clock (13) (14) (10) Pin Arrangement (Top View) Pin Function y t i VSX-D912-S...

  • Page 81: Display

    ANALOG DTS MPEG ADV.SURR. MPEG LOUDNESS MONO • Grid Assignment SIGNAL AUTO DIGITAL VIR.SB DIRECT SLEEP RFATT DIGITAL DIGITAL PROLOGIC MIDNIGHT STEREO TUNED ANALOG DTS MPEG Neo:6 ADV.SURR. MPEG LOUDNESS MONO • Segment Designation SIGNAL (10G) (1G) (2G to 9G) (1G) VSX-D912-S...
  • Page 82 6) Field of vision is a minimum of 21.8° from the lower side. • Anode Connection 9G-2G RFATT AUTO √ DIGITAL TUNED ANALOG DIGITAL (L) MPEG MPEG DIGITAL (R) PROLOGIC ∏ Neo:6 VIR.SB ADV.SURR. DIRECT MIDNIGHT LOUDNESS SLEEP STEREO MONO VSX-D912-S...

  • Page 83: Explanation

    7.3 EXPLANATION 7.3.1 POWER ON AND OFF INITIAL TIMING CHART VSX-D912-S...
  • Page 84 (port) FUNCTION SW full open (IC101 : BD3841) VIDEO system mute (IC301 : NJM2595) TUNER mute (IC202 : LC72131) E-VOLUME mute (IC108 : BD3813) (IC8501 : DSPD56367) DIR/CODEC (IC8201 : AK4114/AK4628) SPEKER relay (port) OVERLOAD DETECT AMP ERROR DETECT VSX-D912-S...

  • Page 85: Ic Data Transmission Timing Chart

    1) when tuner mute during Tuner function 2) when communicate to DSP 3) when initial processing 4) when detect trouble of AMP DC 5) when detect overload of AMP 6) when Power off 7) when muting by key input VSX-D912-S...

  • Page 86: Detection Circuit

    L : ON H : OFF Fan Stop DET. Q253 Fan Stop R265 Fan - Fan + -12V +12V 4. PCB Board Protection Circuit Diagram Main Assy Amp & Primary Assy Amp Input Assy Speaker u-con IC9001 Pin 24 VSX-D912-S...

  • Page 87: Amplifier System Protection Operation Specification

    The power is shut off even if the The power is shut off. unit recovers. 7.4 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-D912-S...

  • Page 88: Panel Facilities

    SAT) ASSIGNABLE COAX T V / MONITOR DIGITAL FRONT S I N G L E (CD) D V D SEE INSTRUCTION 7.1CH MANUAL COAX INPUT WOOFER DVD / CD-R PREOUT (DVD / TAPE /LD) / MD S-VIDEO PLAY AUDIO VSX-D912-S...
  • Page 89 Use Loudness to boost the bass and treble at low volume. 14 SPEAKERS Use to cycle through the speaker system: A → B → A+B. 15 SB CH MODE Selects the Surround back channel mode and the Virtual Surround Back (VSB) mode. VSX-D912-S...
  • Page 90 - 0 dB indicates the maximum level. SLEEP Depending on your level settings for each channel, the Lights when the receiver is in sleep mode. maximum volume can range between –10 dB and –0 dB. VSX-D912-S...

  • Page 91: Remote Control Unit

    D.ACCESS EFFECT +/– Adds or subtracts the amount of effect with different advanced surround modes. FL DIMMER DISC Dims or brightens the display. ENTER MASTER VOLUME +/– Use to set the listening volume. TV CONTROL CHANNEL CHANNEL VOLUME RECEIVER VSX-D912-S...
  • Page 92 DISPLAY Use to switch the display between the station preset name, frequency and RDS data when using the tuner. CLASS Switches between the three banks (classes) of radio station presets. VSX-D912-S...

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