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Onkyo TX-SR55 Service Manual

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Download this manual See also: Instruction Manual
SERVICE MANUAL
SERVICE MANUAL
AV RECEIVER
TX-SR55
MODEL
Black model
BMDD
120V AC, 60Hz
SAFETY-RELATED COMPONENT
WARNING!!
COMPONENTS IDENTIFIED BY MARK
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ONKYO
PARTS WHOSE PART NUMBERS APPEAR AS SHOWN
IN THIS MANUAL.
MAKE LEAKAGE-CURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE
SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE TO THE CUSTOMER.
Ref. No. 3855
RC-591M
ON THE
TX-SR55
122004

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  • Page 1 COMPONENTS IDENTIFIED BY MARK ON THE SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE THESE COMPONENTS WITH ONKYO PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL. MAKE LEAKAGE-CURRENT OR RESISTANCE...
  • Page 2 TX-SR55 SPECIFICATIONS Amplier Section General Power Output Power Supply AC 120 V, 60 Hz (2 channels driven): 85 W + 85 W (8 ,20Hz–20kHz, FTC) Power Comsumption 6.7A 120 W +120 W (6 ,1kHz,DIN) Stand-by Power 150 W + 150 W (6 ,1kHz,JEITA) Comsumption 1.0 W...
  • Page 3 TX-SR55 SERVICE PROCEDURES 1. Replacing the fuses This symbol located near the fuses indicates that the fuse used is fast operating type. For continued protection against fire hazard, replace with same type fuse. For fuse rating refer to the marking adjacent to the symbol.
  • Page 4 TX-SR55 EXPLODED VIEW A161 A189 A031 A037 A059 A033 A042 A031 A187 P761 A043 A031 A070 A046 A045 A211 A031 A031 A031 A091 A161 F903 Q6050A A188 Q6055 F901 A161 P7501 A031 A036 A031 A101 A031 A031 A031 Q6050 A031...
  • Page 5 TX-SR55 BLOCK DIAGRAM Amplifier section MIC AMP TUNER PACK VIDEO4 NJW1157 -6dB TAPE OUT TAPE IN TC9162 VIDEO3 IN Z2_L MIX_L Z2_R MIX_R VIDEO2 OUT VIDEO2 IN RECOUT_L VOLIN_SBL RECOUT_R VOLIN_SBR VIDEO1 OUT VIDEO1 IN SOURCE_L SOURCE_R MSL/MSR TONE MC/MSW...
  • Page 6 TX-SR55 BLOCK DIAGRAM Amplifier section HEADPHONES POWER AMPLIFIER SPEAKER TERMINALS +29dB FRONT LEFT +29dB FRONT RIGHT +29dB CENTER FL_PO TONE +29dB SURR. LEFT FR_PO TONE +29dB SURR. RIGHT CT_PO +20.2dB SW_PO +29dB SUUR. BACK LEFT SL_PO +29dB SUUR. BACK RIGHT...
  • Page 7 TX-SR55 BLOCK DIAGRAM Video section COMPONENT VIDEO INPUT SDET*{OSD+(OSD*SI)} OSD*(SDET+SI) COMPOSITE VIDEO INPUT LC74763-9836 SDET*{OSD+(OSD*SI)} VIDEO1 NJM2595 SDET*OSD VIDEO2 VIDEO3 DIGITAL VIDEO DECODER DIGITAL VIDEO ENCOD ADV7183A ADV7172 DACA VIDEO4 AIN1 DACB -6dB DACC AIN2 COMPOSITE / Y2 -6dB AIN3...
  • Page 8 TX-SR55 BLOCK DIAGRAM Video section COMPONENT VIDEO OUTPUT COMPOSITE VIDEO OUTPUT MONITOR LA7106M VIDEO1 VIDEO2 LA7106M SDET*{OSD+(OSD*SI)} ENCODER S VIDEO OUTPUT SDET*{OSD+(OSD*SI)} DACA DACB SDET*{OSD+(OSD*SI)} DACC DACD MONITOR DACE SDET*{OSD+(OSD*SI)} DACF SDET*OSD VIDEO1 SDET*OSD VIDEO2...
  • Page 9 TX-SR55 BLOCK DIAGRAM HEADPHONES MIC AMP POWER AMPLIFIER SPEAKER TERMINALS TUNER PACK +29dB FRONT LEFT VIDEO4 +29dB FRONT RIGHT NJW1157 +29dB CENTER FL_PO TONE +29dB SURR. LEFT -6dB TAPE OUT FR_PO TONE +29dB SURR. RIGHT CT_PO TAPE IN +20.2dB TC9162...
  • Page 10 TX-SR55 BLOCK DIAGRAM Video section COMPONENT VIDEO INPUT COMPONENT VIDEO OUTPUT SDET*{OSD+(OSD*SI)} OSD*(SDET+SI) COMPOSITE VIDEO INPUT LC74763-9836 COMPOSITE VIDEO OUTPUT SDET*{OSD+(OSD*SI)} MONITOR VIDEO1 NJM2595 LA7106M SDET*OSD VIDEO1 VIDEO2 VIDEO2 LA7106M SDET*{OSD+(OSD*SI)} VIDEO3 DIGITAL VIDEO DECODER DIGITAL VIDEO ENCODER ADV7183A ADV7172...

  • Page 11: Naar-8365

    TX-SR55 SCHEMATIC DIAGRAM 1 TO NAVD-8409(SCH. 7) TO NADG-8366 (SCH. 9) Front NAAR-8365-1(1) Preamplifier section AIN_L Q303 AIN_R 78L07 SOURCE_R C375 SOURCE_L C374 10/16 10/16 ADRT+ ADRT- 79L07 Q304 ADLT+ ADLT- C301 104Z R304 CD_R L1IN REC_B2R R303 CD_L MIC_L...
  • Page 12 TX-SR55 SCHEMATIC DIAGRAM 1 TO NAPS-8389 (SCH. 6) C391 R499 SYSIN 103J P424 Q901B Q909 2SA1726 PURE AUDIO 1SS352 D901 R905 Q911 R913 78L05HF Q908 RN2402 VPOWER JL9502B Q907 Q910 RN1402 +24V 79M05FA D902 R906 -24V TRG12V 100 2W 1SS352...

  • Page 13: Naar-8365

    TX-SR55 SCHEMATIC DIAGRAM 2 DSP section +5VDSP +12VA -12VA NAAR-8365-1(2) L921 -12VA +12VA ADLT+ ADLT- ADRT+ ADRT- DAC_FL DAC_FR DAC_CT DAC_SW DAC_SL DAC_SR DAC_SBL DAC_SBR R620 R580 R596 R588 R572 1.5K Q516:A Q515:A Q514:A DAC_SBR NJM4565M-D NJM4565M-D NJM4565M-D NJM4565M-D C541...

  • Page 14: Schematic Diagram

    TX-SR55 SCHEMATIC DIAGRAM 2 DSP section P120B JL7503B +5VDSP Q922 MPD2925T Q921 MPD2933T R682 ADCRST_3V R683 DSPCS_3V ADCRST R684 220 DSPRST_3V DSPCS R685 DIGSDO_3V DSPRST R686 DIGSDO DIGCLK_3V DIGCLK R688 220 DSPFCS_3V DSPFCS C681 104Z DIGSDI DSPINT TC74HCT7007AF Q682 OUT4...

  • Page 15: Naaf

    TX-SR55 SCHEMATIC DIAGRAM 3 Driver section TO NAAR-8365 NAAF-8383 (SCH. 1) P308C [53.0V] R5163 120 (1/4W) R5113 [52.5V] R5183 R5093 Q5033 100K [52.0V] (1/4W) [1.1V] [51.5V] C5103 C5053 P6003A C5013 10/63 47/50 R5003 Q5003 Q5013 C5083 10/50 [-0.1V] 040C [0V]...
  • Page 16 TX-SR55 SCHEMATIC DIAGRAM 3 Driver section TO NAAR-8365 (SCH. 1) TO NAAR-8365 P308A P308C (SCH. 1) [53.0V] R5160 120 (1/4W) R5110 [52.5V] R5180 R5090 Q5030 100K [52.0V] (1/4W) [1.1V] [51.5V] C5100 C5050 P6000A C5010 47/50 10/63 R5000 Q5000 Q5010 C5080 47/50 [-0.1V]...

  • Page 17: Naetc

    TX-SR55 SCHEMATIC DIAGRAM 4 Power amplifier section NAAF-8397 R6063 2.2 [53.0V] Q6033 (1/4W) R6163 R6083 Q6053 R6033 [1.1V] (1/4W) [1.0V] Q6073 R6143 [0.6V] R6003 [0.6V] R6203 5.6K P6083 R6073 R6103 R6013 (1/4W) 0.22 X2 3.9K D6003 Q6013 (5W) R6153 [-0.3V]...
  • Page 18 TX-SR55 SCHEMATIC DIAGRAM 4 Power amplifier section R6060 2.2 [53.0V] Q6030 (1/4W) R6160 R6080 Q6050 R6030 [1.1V] [1.0V] (1/4W) Q6070 R6140 R6000 [0.6V] [0.6V] R6200 5.6K P6080 R6070 R6100 R6010 (1/4W) 0.22 X2 3.9K D6000 +24V Q6010 (5W) +24V [-0.3V]...

  • Page 19: Naetc

    TX-SR55 SCHEMATIC DIAGRAM 5 Power amplifier and Speaker terminal sections NAAF-8391 Refer to the list of SCH. 4 for semiconductors. R6065 2.2 [53.0V] Q6035 (1/4W) R6165 R6085 Q6055 R6035 [1.1V] [1.0V] (1/4W) Q6075 R6145 R6005 0.6V [0.6V] R6205 5.6K [0.6V]...

  • Page 20: Naetc

    TX-SR55 SCHEMATIC DIAGRAM 5 Power amplifier and Speaker terminal sections JL6200B SBRSP SBLSP IPRO NAETC-8402 THERMAL SENS. R6380 PTFL04BF 471Q2N34B0 +24V +24V THERMAL PROT. R6381 PTFL04BC 471Q2N34B0 NAETC-8401 NAETC-8400 RL6600 D6600 C6600 103J RL6602 D6602 C6602 103J JL6805A P6804B TO NAAF-8397...

  • Page 21: Naetc

    TX-SR55 SCHEMATIC DIAGRAM 6 Power supply section NAPS NOTE THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY REPLACE ONLY WITH PART NUMBER SPECIFIED. . VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL) . ELECTROLYTIC CAPACITORS ( ) ARE IN F/WV.

  • Page 22: Naps

    TX-SR55 SCHEMATIC DIAGRAM 6 Power supply section NAPS-8389 C9003 D9001 D9002 1000/35 C9001 J9019 334J D9001-9004: RL1N4003 C9004 470/35 C9002 D9003 D9004 -24V 334J S3GND Q9001 NJM78M56FA +24V D9005 TA78057S +12V D3SBA20 D9010 C9011 S2GND C9005 RL1N4003 1000/25 +5.6V 334J...
  • Page 23 TX-SR55 SCHEMATIC DIAGRAM 7 Display section NADIS-8406 Q7501 HNA-16SM10T Q7503 2SC2712 Q7502 M66005-0001AFP U7501 PIC-37043TH2 D7508 1SS352 R7588 OR 1SS355 REMIN Q7581 Q7582 LEDPURE KRC102S OR RN1402 R7611 KRC102S LEDZ2 OR RN1402 LEDSTBY R7621 NASW-8411 R7631 R7641 Q7584 S7501 LEDVOL...

  • Page 24: Naps

    TX-SR55 SCHEMATIC DIAGRAM 7 Display section P7502A TO NAPS-8389 (SCH. 6) NAETC-8412 -26V C7534 473Z R7808 L7801 022M P7801 L7802 C7801 R7805 C7805 022M Q7801 10/16 D7501 10/16 R7806 Q7802 ANALYZER UDZS8.2B R7809 5.6V C7802 RN1241-A C7505 330J NJM4565M-D 473Z...
  • Page 25 TX-SR55 SCHEMATIC DIAGRAM 8 Video section TO NADG-8366 (PART-9) TO NADG-8366 P2004 NAVD-8464 P2201 4.7M RL2201 RL2204 C2202 JL6802A 102K P2201 RL2202 RL2205 RL2203 P2201 Q2004 D2202 LC74763-9836 Vdd1 C2061 X2001 R2057 D2201 SYNCDET 0.47/50 C2041 14.32MHZ XTALIN1 R2205 R-S2...
  • Page 26 TX-SR55 SCHEMATIC DIAGRAM 8 Video section NADG-8366(PART-9) P2005 C2072 C2071 104Z 104Z R2083 R2071 100K 100K R2082 R2072 100K 100K R-S3 R2073 R2086 100K R-S4 100K R2074 R2085 100K 100K R2081 L-S5 R-S5 R2075 100K Q2006 R2080 L-S6 100K R-S6...
  • Page 27 TX-SR55 SCHEMATIC DIAGRAM 9 Microprocessor section NADIS-8406 (SCH. 7) P121A IRIN +56S GNDCPU 12VTRGC +12VTRG 12VTRGB R837 12VTRGA NADG-8366 2.7K IRABUS R838 2.7K R839 Z2PLMUTD 2.7K Z2_R R840 2.7K Z2_L -12VA GNDA +12VA 5VCPU 232TX 232RX R805 GNDCPU P103A 104Z...
  • Page 28 TX-SR55 SCHEMATIC DIAGRAM 9 Microprocessor section H. 7) +5VMUT R843 R841 R845 2.2K 2.2K 2.2K 102J Q709 C716 C714 102J Q705 Q707 102J RN1404 RN1404 RN1404 C717 C715 102J GNDCPU 102J C718 SBZ2MUTD 102J C719 R833 4.7K Z2PLMUTD 102J C720...
  • Page 29 TX-SR55 SCHEMATIC DIAGRAM 10 I/O termianl sections NADG-8368 L115 VQ112 022M R125 U114 TORX179L R124 U113 L116 VOPT 022M TORX179L C119 R123 080D U112 R119 L114 022M TORX179L U111 TOTX179L R117 R114 L113 C117 R118 022M C118 104K 080D C120...

  • Page 30: Naetc

    TX-SR55 SCHEMATIC DIAGRAM 10 I/O termianl sections NAETC-8367 DC12V IN P113 C135 C133 R133 NJM4565M-D 10/16 2.2/50 Q133:B RL1N4003 R141 C141 1SS355 101J C137 A-Bus for Q131 R139 10/35 RN1441 6.8K Z2OUT 6.8K R140 RN1441 D131 C142 Q132 D132 C138...
  • Page 31 TX-SR55 SCHEMATIC DIAGRAM 1 TO NAVD-8409(SCH. 7) TO NADG-8366 (SCH. 9) TO NAPS-8389 (SCH. 6) Preamplifier section Front NAAR-8365-1(1) C391 R499 SYSIN 103J P424 Q901B AIN_L Q303 AIN_R 78L07 Q909 SOURCE_R 2SA1726 SOURCE_L C375 PURE AUDIO C374 1SS352 D901 R905...
  • Page 32 TX-SR55 SCHEMATIC DIAGRAM 2 DSP section +5VDSP +12VA -12VA NAAR-8365-1(2) P120B JL7503B +5VDSP Q922 MPD2925T Q921 L921 MPD2933T R682 -12VA ADCRST_3V +12VA R683 ADCRST DSPCS_3V DSPRST_3V R684 220 DSPCS DIGSDO_3V R685 DSPRST R686 DIGSDO DIGCLK_3V DIGCLK R688 220 DSPFCS_3V DSPFCS...
  • Page 33 TX-SR55 SCHEMATIC DIAGRAM 3 Driver section TO NAAR-8365 NAAF-8383 (SCH. 1) TO NAAR-8365 P308A P308C (SCH. 1) [53.0V] R5163 [53.0V] R5160 120 (1/4W) 120 (1/4W) R5113 R5110 [52.5V] [52.5V] R5183 R5180 R5093 R5090 Q5033 Q5030 100K 100K [52.0V] [52.0V] (1/4W) (1/4W) [1.1V]...

  • Page 34: Naetc

    TX-SR55 SCHEMATIC DIAGRAM 4 Power amplifier section NAAF-8397 R6063 2.2 R6060 2.2 [53.0V] [53.0V] Q6033 Q6030 (1/4W) R6163 (1/4W) R6160 R6083 R6080 Q6053 Q6050 R6033 R6030 [1.1V] [1.1V] (1/4W) [1.0V] (1/4W) [1.0V] Q6073 Q6070 R6143 R6140 [0.6V] R6003 [0.6V] R6000 [0.6V]...

  • Page 35: Table Of Contents

    TX-SR55 SCHEMATIC DIAGRAM 5 Power amplifier and Speaker terminal sections NAAF-8391 Refer to the list of SCH. 4 for semiconductors. R6065 2.2 Q6035 [53.0V] (1/4W) R6165 R6085 Q6055 R6035 [1.1V] [1.0V] (1/4W) Q6075 R6145 JL6200B R6005 [0.6V] 0.6V R6205 5.6K [0.6V]...
  • Page 36 TX-SR55 SCHEMATIC DIAGRAM 6 Power supply section NAPS-8389 C9003 D9001 D9002 1000/35 NOTE C9001 J9019 ARE CRITICAL FOR SAFETY 334J THE COMPONENTS IDENTIFIED BY MARK D9001-9004: REPLACE ONLY WITH PART NUMBER SPECIFIED. RL1N4003 C9004 . VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL) 470/35 .
  • Page 37 TX-SR55 SCHEMATIC DIAGRAM 7 Display section P7502A TO NAPS-8389 (SCH. 6) NADIS-8406 NAETC-8412 Q7501 -26V HNA-16SM10T C7534 473Z R7808 L7801 022M P7801 C7801 L7802 R7805 C7805 022M Q7801 10/16 D7501 10/16 R7806 Q7802 Q7503 UDZS8.2B ANALYZER 2SC2712 R7809 5.6V C7802...
  • Page 38 TX-SR55 SCHEMATIC DIAGRAM 8 Video section TO NADG-8366 (PART-9) TO NADG-8366(PART-9) P2004 NAVD-8464 P2005 P2201 4.7M RL2201 RL2204 C2202 JL6802A P2201 102K RL2202 RL2205 RL2203 P2201 Q2004 D2202 LC74763-9836 Vdd1 X2001 R2057 C2061 D2201 SYNCDET 0.47/50 C2072 C2071 C2041 14.32MHZ...

  • Page 39: Nadis

    DTR-5.5 SCHEMATIC DIAGRAM 9 NADIS-8406 (SCH. 7) +5VMUT Microprocessor section P121A IRIN +56S R841 R843 R845 2.2K 2.2K 2.2K GNDCPU 12VTRGC 102J Q709 C716 C714 102J Q705 Q707 102J RN1404 RN1404 RN1404 C717 C715 102J +12VTRG GNDCPU 102J 12VTRGB C718 SBZ2MUTD 102J 12VTRGA...
  • Page 40 TX-SR55 SCHEMATIC DIAGRAM 10 I/O termianl sections NAETC-8367 NADG-8368 DC12V IN P113 C135 C133 R133 NJM4565M-D 10/16 2.2/50 Q133:B RL1N4003 VQ112 L115 R141 C141 101J C137 1SS355 022M Q131 A-Bus for R139 10/35 RN1441 6.8K U114 R125 Z2OUT 6.8K R140...
  • Page 41 TX-SR55 WIRING VIEW AC inlet PC board NAETC-8399 Speaker terminal PC b P6602 P6600 P6803 P6802 NAETC-8388 NAETC-8400 NAETC-8401 SCH. 6 Speaker terminal P6691 Soldering side P901B F/C PC board SCH. 5 JL6802B JL6805B JL6803B JL6805A Soldering side SCH. 5...

  • Page 42: Nasw

    TX-SR55 WIRING VIEW PC board NAETC-8367 SCH. 10 Control terminal PC board Digital input/output terminal PC board SCH. 10 Video circuit PC board NADG-8368 P2201 P2002 P2003 P2001 P6802 P6803 P6801 P424 P423 P422 P304 P301 P305 P303 P302 P2501A...

  • Page 43: Naetc

    TX-SR55 WIRING VIEW AC inlet PC board NAETC-8399 Speaker terminal PC board P6602 P6600 P6802 P6803 NAETC-8388 NAETC-8400 NAETC-8401 SCH. 6 Speaker terminal NAETC-8367 P6691 Soldering side P901B F/C PC board SCH. 5 SCH. 10 JL6805B JL6803B JL6802B Control terminal PC board...
  • Page 44 TX-SR55 PRINTED CIRCUIT BOARD VIEW 1 FROM COMPONENT SIDE NAAR-8365 DSP and preamplifier PC board(NAAR-8365)
  • Page 45 TX-SR55 PRINTED CIRCUIT BOARD VIEW 2 FROM SOLDERING SIDE R5126 C5006 R5125 C5005 J5164 J5153 R5196 R5195 R5006 R5005 JL6006A R5226 JL6005A R5225 R5166 R5165 C5056 C5055 R5206 R5205 C5106 Q5036 C5105 Q5035 J5163 C5036 J5152 C5035 R5116 R5115 C5016...
  • Page 46 TX-SR55 PRINTED CIRCUIT BOARD VIEW 3 FROM SOLDERING SIDE Q6064 Q6054 Q6063 Q6053 Q6062 Q6052 Q6061 Q6051 Q6060 Q6050 Q6014 Q6013 Q6012 Q6011 Q6010 J6164 J6145 J6127 J6099 J6049 SBRSP J6166 J6156 J6150 J6136 J6135 J6116 J6101 J6083 J6066 J010A...
  • Page 47 TX-SR55 PRINTED CIRCUIT BOARD VIEW 4 FROM SOLDERING SIDE P6600 P6602 P6600 C6652 C6642 C6650 C6640 P6602 Q6056 P6383 NCETC-8401 C6651 Q6066 Q6065 Q6055 Q6016 Q6015 25138401 R6610 J6600 R6383 J6603 R6382 J6611 L6600 J6615 J6614 J6602 J6601 J6618 J6616...
  • Page 48 TX-SR55 PRINTED CIRCUIT BOARD VIEW 5 FROM SOLDERING SIDE NCPS-8382 25138382A AC-G AC-H P901A P915 P916 P911 (DJW) J920 J902 AC-G AC-H POWER J900 SEC1H P6953B R9008 J915 J921 +13VS SPRLZ2 F903 C9014 P921 C9008 +10VS J9007 C9009 J9013 SPRLSB...
  • Page 49 TX-SR55 PRINTED CIRCUIT BOARD VIEW 6 Side A S7618 S7621 MULTICH S7631 S7632 S7634 S7635 S7636 S7638 R7641 Side A Side B Volume PC board S7611 S7611 25138406B STAND (NASW-8411) NCDIS-8 -8406 -84 4 06 LEDVO C7808 C7808 Side B...
  • Page 50 TX-SR602/E PRINTED CIRCUIT BOARD VIEW 7 P P 2009A Side A S BL Side A Side B Video 4 termin l C board Side B Side A Front optical terminal PC board (NADG-8410) Video circuit PC board Side B (NAVD-8464)
  • Page 51 TX-SR55 PRINTED CIRCUIT BOARD VIEW 8 FROM COMPONENT SIDE Digital input/output terminal PC board (NADG-8368) NADG-8366 Control terminal PC board Main connector PC board (NAETC-8367)
  • Page 52 TX-SR55 PRINTED CIRCUIT BOARD VIEW 1 FROM COMPONENT SIDE NAAR-8365 DSP and preamplifier PC board...
  • Page 53 TX-SR55 PRINTED CIRCUIT BOARD VIEW 1 FROM COMPONENT SIDE NAAR-8365 DSP and preamplifier PC board...
  • Page 54 TX-SR55 PRINTED CIRCUIT BOARD VIEW 2 FROM SOLDERING SIDE C5004 Q5034 R5004 R5194 R5224 J5144 C5014 R5044 C5114 R5204 R5164 R5014 R5134 R5024 J5140 C5094 R5104 C5044 J5143 C5024 Q5054 R5084 R5074 Q5014 R5174 R5154 R5144 J5142 J5141 C5003 Q5033...
  • Page 55 TX-SR55 PRINTED CIRCUIT BOARD VIEW 3 FROM SOLDERING SIDE Q6064 Q6054 Q6063 Q6053 Q6062 Q6052 Q6014 Q6013 Q6012 J6164 J6145 J6127 J6166 J6156 J6150 J6136 J6135 J6165 J6157 J6146 J6144 J6128 THRM J6170 J6161 J6155 J6143 J6139 J6123 J6148 J6126...
  • Page 56 TX-SR55 PRINTED CIRCUIT BOARD VIEW 3 FROM SOLDERING SIDE Q6052 Q6061 Q6051 Q6060 Q6050 Q6012 Q6011 Q6010 J6127 J6099 J6049 SBRSP J6135 J6116 J6101 J6083 J6066 J010A SBLSP J6128 J6117 J6100 J6084 J6048 IPRO J6016 J6123 J6115 J6095 J6082 J6047...
  • Page 57 TX-SR55 PRINTED CIRCUIT BOARD VIEW 4 FROM SOLDERING SIDE Q6056 P6383 Q6066 Q6065 Q6055 Q6016 Q6015 J6600 R6383 J6603 R6382 J6611 J6615 J6614 J6602 J6601 J6618 J6613 J6612 J6619 J6616 J6617 J6622 D6015 J6610 R6106 J6606 C6036 R6105 J6620 SBRSP...
  • Page 58 TX-SR55 PRINTED CIRCUIT BOARD VIEW 4 FROM SOLDERING SIDE P6600 P6602 P6600 C6652 C6642 C6650 C6640 P6602 NCETC-8401 C6651 25138401 R6610 L6600 J6615 R6600 L6602 J6632 L6600 L6601 J6616 P6691 J6645 JL6805A J6623 C6600 J6625 J6619 J6605 RL6600 D6600 J6620...
  • Page 59 TX-SR55 PRINTED CIRCUIT BOARD VIEW 5 FROM SOLDERING SIDE NCPS-8382 25138382A AC-G AC-H P901A P915 P916 P911 (DJW) J920 J902 J900 AC-G AC-H J915 J921 F903 P921 J909 J901 F903A F903B (DJW) J918 J917 5A 125V P918 10A 125V (PSW)
  • Page 60 TX-SR55 PRINTED CIRCUIT BOARD VIEW 5 FROM SOLDERING SIDE POWER SEC1H P6953B R9008 +13VS SPRLZ2 C9014 C9008 +10VS J9007 C9009 J9013 SPRLSB VOLH C9008 SPRLF C9009 SPRLCS THRM FLAC1 P6931A FLAC2 D9006 SEC3-2 D9008 S3GND C9006 D9013 SEC3-1 D9009 C9018...
  • Page 61 TX-SR55 PRINTED CIRCUIT BOARD VIEW 6 Side A MULTICH VIDEO1 VIDEO1 VIDEO2 VIDEO2 VIDEO4 VIDEO4 TAPE TAPE R7621 R7621 R7622 R7622 R7623 R7623 R7624 R7624 R7625 R7625 R7617 VIDEO3 R763 STANDBY Side B Q7581 NADIS-8406 Display circuit PC board...
  • Page 62 TX-SR55 PRINTED CIRCUIT BOARD VIEW 6 Side A TUNER TAPE D7 7 SETUP S7643 NASW-8411 Side B Volume PC board LEDVOL Side A Side B Side A HPDE HPDET L7704 C7704 NADIS-8406 Side B Display circui P board NAETC-8412 Headphone terminal PC board...
  • Page 63 TX-SR55 PRINTED CIRCUIT BOARD VIEW 7 P P 2009A Side A 501B Side B NAVD-8409 Video 4 terminal PC board Side B Side NADG-8410 Front optical terminal PC board...
  • Page 64 TX-SR55 PRINTED CIRCUIT BOARD VIEW 8 C2045 R2041 C2046 R2042 R2043 C2047 C2048 D2001 R2070 R2044 C2060 R2068 C2059 R2069 C2041 R2057 R2084 R2056 R2078 R2079 R2077 C2042 R2080 R2055 C2043 R2081 R2076 R2054 R2085 R2075 R2053 R2086 R2074 R2052...
  • Page 65 TX-SR55 PRINTED CIRCUIT BOARD VIEW 7 C6882 D6801 Side B NAVD-8464 R2088 R2001 R2087 Video circuit PC board R2003 R2004 R2007 R2011 C2010 R2010 C2026 R2013 L2104 R2089 Q2013 L2101 R2017 L2103 C2022 L2102 L2105 C2016 R2016 C2030 R2064 R2019...
  • Page 66 TX-SR55 PRINTED CIRCUIT BOARD VIEW 8 FROM COMPONENT SIDE NADG-8366 Main connector PC board...
  • Page 67 TX-SR55 PRINTED CIRCUIT BOARD VIEW 9 FROM COMPONENT SIDE NAETC-8367...
  • Page 68 TX-SR55 PRINTED CIRCUIT BOARD VIEW 9 FROM COMPONENT SIDE NADG-8368 Digital input/output terminal PC board...
  • Page 69 TX-SR55 IC BLOCK DIAGRAMS AND DESCRIPTIONS ADV7172KSTZ(Digital PAL/NTSC Vidoe Encoder with Six DACs) FUNCTIONAL BLOCK DIAGRAM CLOCK PAL NTSC CLAMP SCLOCK SDATA ALSB 10-BIT FIELD/ YUV TO VIDEO TIMING C MPU PORT DAC A GENERATOR MATRIX 10-BIT DAC B LEVEL...
  • Page 70 TX-SR55 IC BLOCK DIAGRAMS AND DESCRIPTIONS ADV7172KSTZ(Digital PAL/NTSC Vidoe Encoder with Six DACs) PIN FUNCTION DESCRIPTION Mnemonic Input/Output Function P7–P0 8-Bit 4:2:2 Multiplexed YCrCb Pixel Port (P7ÐP0) P0 represents the LSB. CLOCK TTL Clock Input. Requires a stable 27 MHz reference clock for standard operation. Alter- natively, a 24.5454 MHz (NTSC) or 29.5 MHz (PAL) can be used for square pixel operation.
  • Page 71 TX-SR55 IC BLOCK DIAGRAMS AND DESCRIPTIONS ADV7183AKST(Multiformat SDTV Video Decoder) DATA CLAMP AIN1–AIN12 PREPROCESSOR INPUT CLAMP CVBS DECIMATION AND S-VIDEO DOWNSAMPLING YPrPb FILTERS CLAMP SYNC AND CLK CONTROL SYNC PROCESSING AND CLOCK GENERATION CONTROL SCLK AND DATA SERIAL INTERFACE CONTROL AND VBI DATA...
  • Page 72 TX-SR55 IC BLOCK DIAGRAMS AND DESCRIPTIONS ADV7183AKST(Multiformat SDTV Video Decoder) Pi n Function Descri ptions Pin No. Mnemonic Type Function 3, 9, 14, 31, 71 DGND Digital Ground. 39, 40, 47, 53, 56 AGND Analog Ground. 4, 15 DVDDIO Digital I/O Supply Voltage (3.3 V )
  • Page 73 TX-SR55 IC BLOCK DIAGRAMS AND DESCRIPTIONS CS42518(110dB,192kHz 8-Ch Codec with S/PDIF Receiver) TXP VARX AGND LPFLT DGND DGND VD VD RXP0 C&U Bit RXP1/GPO1 RXP2/GPO2 Data Buffer S/PDIF Control AD0/CS Clock Data RXP3/GPO3 Decoder Port AD1/CDIN Recovery RXP4/GPO4 Format SDA/CDOUT...
  • Page 74 SAI0 Serial External Memory SAI1 Audio Interface SAI2 Interface SAI3 Compressed DSP C Digital Digital DAO 0 Interface Audio Programmable Frame Output 32-Bit DSP Multi-Standard DA01 Shifter Digital Audio Decoder Audio Input GPIO and I/O Controller DSP AB Input Paraller or Serial Paraller or Serial Buffer PLL Clock...
  • Page 75 TX-SR55 IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS IC42S16100 (16-Mbit Synchronous Dynamic RAM) BLOCK DIAGRAM COMMAND DECODER MEMORY CELL & ARRAY ADDRESS 2048 CLOCK BUFFER GENERATOR MODE BANK 0 REGISTER DATA IN SENSE AMP I/O GATE BUFFER I/O 0-15 COLUMN DECODER...
  • Page 76 TX-SR55 IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS IC42S16100 (16-Mbit Synchronous Dynamic RAM) TERMINAL DESCRIPTION Pin No. Pin name Function 20 to 24 A0-A10 A0 to A10 are address inputs. A0-A10 are used as row address inputs during active command input 27 to 32 and A0-A7 as column address inputs during read or write command input.
  • Page 77 TX-SR55 IC BLOCK DIAGRAMS AND DESCRIPTIONS LA7106MFP(75 ohm video driver) +VCC VIN1+ VOUT1 NFB1 MUTE1 VOUT2 VIN2+ DR CTL NFB2 VOUT3 -VCC1 MUTE2 VIN3+ -VCC2 NFB3 NJM2595M(Video Selector Switch) Vin1 75Ohm Driver Vin2 Vout1 Vin3 75Ohm Driver Vout2 Vin4 Vin5...
  • Page 78 TX-SR55 IC BLOCK DIAGRAMS AND DESCRIPTIONS LC74763-9836(On-screen and controller) 8 BITS SERIAL LATCH PARALLEL COMMAND CONVERSION DECODER INDICATOR HORIZONTAL HORIZONTAL VERTICAL ON/OFF RAM WRITE VERTICAL SCLK CHARACTER INDICATION INDICATION INVERSION CHARACTER CONTROL ADDRESS POSITION POSITION CONTROL SIZE SIZE REGISTER REGISTER...
  • Page 79 TX-SR55 IC BLOCK DIAGRAMS AND DESCRIPTIONS M66005-0001AFP(FL tube drive IC) Vcc1 Vcc2 SEG36 DISPLAY CODE RAM CGROM (8 bits 16) (35 bits 160) SEG28 SEG27 SERIAL RECEIVE CGRAM CIRCUIT (35 bits 16) SEG01 SDATA write DIG16/SEG40 DIG13/SEG37 INDICATOR CONTROL RESET...
  • Page 80 DTR-6.5 IC BLOCK DIAGRAMS AND DESCRIPTIONS uPD4721GS (RS-232C Driver/ Receiver) Block diagram Truth table Driver STBY Remarks Standby mode (DC/DC converter is stopped) Space level output Mark level output Receiver Remarks STBY STBY Standby mode (DC/DC converter is stopped) Space level input 300 ohm OUT1 Space level input...
  • Page 81 TX-SR55 IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS MX29LV040 (4M-Bit CMOS Single Voltage 3V Only Equal Sector Flash Memory) BLOCK DIAGRAM PROGRAM/ERASE CONTROL WRITE INPUT HIGH VOLTAGE STATE LOGIC MACHINE (WSM) STATE REGISTER MX29LV040 FLASH ARRAY ADDRESS ARRAY LATCH SOURCE A0-A18...
  • Page 82 TX-SR55 IC BLOCK DIAGRAMS AND DESCRIPTIONS NJW1157(8-Channel Electronic Volume with Input Selector) LAIN RAIN CAIN LSAIN RSAIN LBAIN RBAIN Supply SWAIN Voltage LATCH uCOM DATA L1IN Interface CLOCK Multi-channel DCLA1 DCLA2 R1IN L2IN TONE L OUT R2IN DCRA1 DCRA2 L3IN...
  • Page 83 TX-SR55 IC BLOCK DIAGRAMS AND DESCRIPTIONS NJW1157(8-Channel Electronic Volume with Input Selector) PIN FUNCTION SYMBOL FUNCTION SYMBOL FUNCTION LOUT Lch output L1IN "Input selector" Lch input 1 ROUT Rch output R1IN "Input selector" Rch input 1 COUT Cch output L2IN "Input selector"...
  • Page 84 TX-SR55 IC BLOCK DIAGRAMS AND DESCRIPTIONS TC9162BFG(Function Switch) COM1 COM1 COM2 COM2 COM3 COM3 COM4 COM4 DATA SHIFT REGISTER Symbol Pin No. Function Negative power supply Ground Positive power supply S1~S7 Input/output terminals 2,3,5,6,8,9,11 S1~S7 Input/output terminals 27,26,24,23,21,20,18 COM1 ~ COM4...
  • Page 85 TX-SR55 IC BLOCK DIAGRAMS AND DESCRIPTIONS TC9164AF(Function switch) COM1 COM1 COM2 COM2 COM3 COM3 DATA SHIFT REGISTER Pin No. Symbol Function Negative power supply Ground Positive power supply 2,3,4,6,7,8,10,11 Input/output terminals S1~S8 27,26,25,23,22,21,19,18 S1~S8 Input/output terminals 5,9,12 Common terminals COM1 ~ COM3...
  • Page 86 TX-SR55 IC BLOCK DIAGRAMS AND DESCRIPTIONS TC74HCT7007AF(Hex buffer) Truth table (TOP VIEW) TC74VHC541FT(Octal bus buffer) INPUTS OUTPUT X :Don't care Z :High impedance 74HCU04F(Hex Inverters) Truth table (TOP VIEW)
  • Page 87 TX-SR55 MICROPROCESSOR-CONNECTION DIAGRAM 12V TRIGGER A 12V TRIGGER B 12V TRIGGER C TRIGGER CONTROL Q2106,7 VIDEO MUTE SW LA7106M --> Vref Q7501 --> AVcc Q7502 FL <-- FLCS <-- FLUORESCENT TUBE TUBE DRIVER FLSDO <-- FLCLK M66005 <-- ~FLRST HNA-16SM10T P93/DA0/TB3IN <--...
  • Page 88 TX-SR55 MICROPROCESSOR-CONNECTION DIAGRAM RL7701 RELAY S7501,S7502 VOLUME Q7701 Q7583 Q7582 Q7581 MUTING SWITCH Q401 Q402 FROM POWER Q403 Q404 AMP. OUTPUT RL6901 RL6902 Q405 Q6703 Q6901 CURRENT Q406 GATE BIAS DET. CIRCUIT SELECT SW PURE AUDIO Q6701,2 POWER DC DET.
  • Page 89 TX-SR55 MICROPROCESSOR-TERMINAL DESCRIPTIONS No. Terminal Symbol Act. Description Vref Vref Connect to Vcc. Reference voltage input terminal for A/D converter. AVcc AVcc Connect to Vcc. Power supply terminal for A/D converter. P97/~ADTRG/SIN4 FLCS Chip selector output terminal for FL tube driver...
  • Page 90 TX-SR55 MICROPROCESSOR-TERMINAL DESCRIPTIONS No. Terminal Symbol Act. Description 65 P47/~CS3 VLTNSTB Strobe signal output terminal for selector, volume and tone control IC. 66 P46/~CS2 VLTNCLK CLK Clock output terminal for selector, volume and tone control IC. 67 P45/~CS1 VLTNDAT Data output terminal for selector, volume and tone control IC.
  • Page 91 TX-SR55 ADJUSTMENT AND CONFIRMATION PROCEDURES 1.Idling current adjustment Before Idling adjustment, turn the trimming resistors R6040 to R6045 counter-clockwise fully. Connect the DC voltmeter to sockets P6080 to P6086. After turn POWER to ON, adjust the trimming resistors R6040, R6041 and R6042 so that the reading of voltmeter becomes 1.25mV.
  • Page 92 TX-SR55 Confirmation of protection circuit 1. Confirmation of speaker relay Confirm that the speaker relays turn ON approximately 5 seconds after the power switch is turned ON. Confirm that the speaker relays turn OFF immediately after the power switch is turned OFF.
  • Page 93 TX-SR55 4. Operation check of voltage sensor and thermal protector 1. Enter Test-4 mode. 2. Press and release the right arrow key repeatedly until "TEST-4-36" is shown on the front display. 3. Confirm that the FM STEREO indicator lights on and the relays of RL6901 and RL6902 turn OFF.
  • Page 94 TX-SR55 PACKING PROCEDURES A650 A616 A606 A616 A601 Bottom A611 A655 A611 A811 A850 A602 A620 P901 Accessory Printed matters A821 A831 Put the label A656 between A670 page 2 and page 3 of instruction manual E. A820 A656 A851...
  • Page 95 TX-SR55 EXPLODED VIEW-PARTS LIST NOTE: THE COMPONENTS IDENTIFIED BY MARK ! ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE ONLY WITH PART NUMBER SPECIFIED. CAUTION: Replacement for transistor of mark *, if necessary must be made from the same beta group (h ) as the original type.
  • Page 96 TX-SR55 REF. NO. PART NO. DESCRIPTION P901 253297KAW or ! AS-UC-2 or 253352TES AS-UC-2,Power supply cord Q6050A 223024 AC238,Isolated sheet Q6050~Q6052 2202843 or 2SC5242-O or 2202842 2SC5242-R,Transistor Q6053~Q6056 2203663, MN130S-O, 2202842, 2SC5242-R, 2202843, 2SC5242-O, 2203664 or MN130S-Y or 2203666 MN130S-P,Transistor...
  • Page 97 TX-SR55 REF. NO. PART NO. DESCRIPTION A601 29092217A Pad L A602 29092218A Pad R A606 29100153 1020x770,Polybag A611 29110149 Tape, cellophane A616 29110148 Tape PP A620 29100097-1A 350*250,Polybag A650 29054276 Carton box A655 29363900 Label UPC A656 29363059A Label,speaker cable...
  • Page 98 TX-SR55 PRINTED CIRCUIT BOARD-PARTS LIST NOTE: THE COMPONENTS IDENTIFIED BY MARK ! ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE ONLY WITH PART NUMBER SPECIFIED. CAUTION: Replacement for transistor of mark *, if necessary must be made from the same beta group (hFE) as the original type.
  • Page 99 TX-SR55 PART NO. CIRCUIT NO. DESCRIPTION Diodes D861,D862,D863 223234R2 or 1SS352 or D864,D865,D866 223269R2 1SS355 D867,D868,D901 223234R2 or 1SS352 or D902 223269R2 1SS355 Coils L201,L202 231237K022R2 NCH-1471 L203,L204,L205 233533M022R2 or NCH-1587-022M or L861,L862,L863 231237K022R2 NCH-1471 L211,L865 230959R1 BK1608LL241-T L864,L866 233533M022R2 or...
  • Page 100 TX-SR55 PART NO. CIRCUIT NO. DESCRIPTION C403,C404 393344707 CE04W16V-47M(VX),Elect. C405,C406,C407 393344707 CE04W16V-47M(VX),Elect. C408 393381007 CE04W50V-10M(VX),Elect. C411,C412 393341007 CE04W16V-10M(VX),Elect. C415,C416 373044724R2 ECHU16V-472J,Chip film C417,C418 373041044R2 ECHU16V-104J,Chip film C419,C420 373041044R2 ECHU16V-104J,Chip film C421,C422,C423 393341007 CE04W16V-10M(VX),Elect. C424,C425,C426 393341007 CE04W16V-10M(VX),Elect. C427,C428 393341007 CE04W16V-10M(VX),Elect. C431,C432...
  • Page 101 TX-SR55 CIRCUIT NO. PART NO. DESCRIPTION Resistors R217,R218 435032214R1 RN72K1J-221JE,Chip carbon R219 435033324R1 RN72K1J-332JE,Chip carbon R221,R222,R223 435034704R1 RN72K1J-470JE,Chip carbon R224,R225,R226 435034704R1 RN72K1J-470JE,Chip carbon R227,R228 435034704R1 RN72K1J-470JE,Chip carbon R229 435031034R1 RN72K1J-103JE,Chip carbon R230,R231,R232 435034704R1 RN72K1J-470JE,Chip carbon R233,R234,R235 435034704R1 RN72K1J-470JE,Chip carbon R236,R237,R238...
  • Page 102 TX-SR55 CIRCUIT NO. PART NO. DESCRIPTION Resistors R501,R502,R503 435033324R1 RN72K1J-332JE,Chip carbon R504,R505,R506 435033324R1 RN72K1J-332JE,Chip carbon R507,R508,R509 435033324R1 RN72K1J-332JE,Chip carbon R510,R511,R512 435033324R1 RN72K1J-332JE,Chip carbon R513,R514,R515 435033324R1 RN72K1J-332JE,Chip carbon R516 435033324R1 RN72K1J-332JE,Chip carbon R517,R518,R519 435036814R1 RN72K1J-681JE,Chip carbon R520,R521,R522 435036814R1 RN72K1J-681JE,Chip carbon R523,R524,R525...
  • Page 103 TX-SR55 CIRCUIT NO. PART NO. DESCRIPTION Resistors R872,R873,R874 435035604R1 RN72K1J-560JE,Chip carbon R875,R876,R877 435035604R1 RN72K1J-560JE,Chip carbon R878,R879 435035604R1 RN72K1J-560JE,Chip carbon R880,R881 435031024R1 RN72K1J-102JE,Chip carbon R882 435032224R1 RN72K1J-222JE,Chip carbon R883,R884,R909 435031024R1 RN72K1J-102JE,Chip carbon R885,R886 435035604R1 RN72K1J-560JE,Chip carbon R887 332121045R1 CK725B1C-104K1,Chip ceramic R890,R891...
  • Page 104 TX-SR55 PART NO. CIRCUIT NO. DESCRIPTION Oscillators X701 3010397R2 CSTCR6M0055-R0 Choke coils L701 233533K470R2 or NCH-1587-470K or 231237K470R2 NCH-1479 Capacitors C701,C702,C703 394680107 or CE04W50V-1M(VR) or 394780107 CE04W50V1.0M(SC),Elect. C704 3000126 or FM0H224Z or 3000079 DX-5R5L224,Super C705 332121045R1 CK725B1C-104K1,Chip ceramic C706,C708,C709 332161040R1...
  • Page 105 TX-SR55 PART NO. CIRCUIT NO. DESCRIPTION Resistors R794,R795,R796 435032214R1 RN72K1J-221JE,Chip carbon R797,R798,R799 435034724R1 RN72K1J-472JE,Chip carbon R800,R801,R802 435034724R1 RN72K1J-472JE,Chip carbon R803,R804 435034724R1 RN72K1J-472JE,Chip carbon R805,R806,R809 435031034R1 RN72K1J-103JE,Chip carbon R810 435034734R1 RN72K1J-473JE,Chip carbon R811 435031054R1 RN72K1J-105JE,Chip carbon R812,R813 435031024R1 RN72K1J-102JE,Chip carbon R814...
  • Page 106 TX-SR55 PART NO. CIRCUIT NO. DESCRIPTION Transistors Q153,Q156,Q157 2216175R2 or KTC3875-GR or Q158 2213145R2 2SC2712-GR Q159 2216185R2 or KTA1504-GR or 2214375R2 2SA1162-GR Q171,Q172,Q173 2212855 or 2SB1068-U or 2212853 2SB1068-K Q178,Q179 2216190R2 or KRC102S or 2214470R2 RN1402 Diodes D131,D133 22380260 or...
  • Page 107 TX-SR55 Digital input/output terminal PC board (NADG-8368-1U) PART NO. CIRCUIT NO. DESCRIPTION Q101 22241537R2 MPD4721GS Q111,Q112 222740046R2 74HCU04F Photo couplers U111 24120102 TOTX179L U112,U113,U114 24120101 TORX179L Coils L101 230948R2 BLM21A102F L112,L113,L114 233533M022R2 or NCH-1587-022M or L115,L116 231237K022R2 NCH-1471 Capacitors C102,C121 394621017 or CE04W6.3V-100M(VR) or...
  • Page 108 TX-SR55 CIRCUIT NO. PART NO. DESCRIPTION Resistors R921 453630824 RNU1WCJ-8.2,Metal R922 417341034 R16J-10K,Carbon R923 417341024 R16J-1K,Carbon R926 417344724 R16J-4.7K,Carbon Power transformer T902 2301775 NPT-1504D Fuse holders F901A,F901B 25052133 NSCT-1P2031 F903A,F903B 25052133 NSCT-1P2031 AC outlet P902 25051126 NSCT-4P913 Socket P931B 25051230...
  • Page 109 TX-SR55 C5022,C5023 394681007 CE04W50V-10M(VX),Elect. CIRCUIT NO. PART NO. DESCRIPTION Capacitors C5024,C5025 394681007 CE04W50V-10M(VX),Elect. C5026 394681007 CE04W50V-10M(VX),Elect. C5040,C5041 393342217 CE04W16V-220M(VX),Elect. C5042,C5043 393342217 CE04W16V-220M(VX),Elect. C5044,C5045 393342217 CE04W16V-220M(VX),Elect. C5046 393342217 CE04W16V-220M(VX),Elect. C5050,C5051 394684707 CE04W50V-47M(VR),Elect. C5052,C5053 394684707 CE04W50V-47M(VR),Elect. C5054,C5055 394684707 CE04W50V-47M(VR),Elect. C5056 394684707 CE04W50V-47M(VR),Elect.
  • Page 110 TX-SR55 CIRCUIT NO. PART NO. DESCRIPTION Resistors R5094,R5095 417341044 R16J-100K,Carbon R5096,R5106 417341044 R16J-100K,Carbon R5100,R5101 417341044 R16J-100K,Carbon R5102,R5103 417341044 R16J-100K,Carbon R5104,R5105 417341044 R16J-100K,Carbon R5110,R5111 417341024 R16J-1K,Carbon R5112,R5113 417341024 R16J-1K,Carbon R5114,R5115 417341024 R16J-1K,Carbon R5116 417341024 R16J-1K,Carbon R5130,R5131 417342234 R16J-22K,Carbon R5132,R5133 417341834 R16J-18K,Carbon...
  • Page 111 TX-SR55 CIRCUIT NO. PART NO. DESCRIPTION Capacitors C9001,C9002 375523344 MMT50V-334J,Plastic C9003 394661027S CE04W35V-1000M(VR),Elect. C9004 394664717 CE04W35V-470M(VR),Elect. C9005 375523344 MMT50V-334J,Plastic C9009 394662217 CE04W35V-220M(VR),Elect. C9010 394644727S CE04W16V-4700M(VR),Elect. C9011 394651027S CE04W25V-1000M(VR),Elect. C9012 335622230 CK45F50V-223Z,Ceramic C9013 394641007 CE04W16V-10M(VR),Elect. C9014 394674717S CE04W63V-470M(VR),Elect. C9015,C9016 335622230 CK45F50V-223Z,Ceramic...
  • Page 112 TX-SR55 CIRCUIT NO. PART NO. DESCRIPTION Resistors R6005,R6006 417345624 R16J-5.6K,Carbon R6015,R6016 417343924 R16J-3.9K,Carbon R6035,R6036 417341024 R16J-1K,Carbon R6045,R6046 5210258 N06HR1KBC,Trimming R6055,R6056 417343924 R16J-3.9K,Carbon R6065,R6066 415470224 R25J-2.2,NF carbon R6075,R6076 415472214 R25J-220,NF carbon R6085,R6086 415470224 R25J-2.2,NF carbon R6095,R6096 415470224 R25J-2.2,NF carbon R6105,R6106 4000201 or...
  • Page 113 TX-SR55 CIRCUIT NO. PART NO. DESCRIPTION Diodes D6000,D6001 223163 or 1SS133 or D6002,D6003 223205 or 1SS270A or D6004 223222 WG713A D6005,D6006 223163 or 1SS133 or 223205 or 1SS270A or 223222 WG713A D6010,D6011 223163 or 1SS133 or D6012,D6013 223205 or 1SS270A or...
  • Page 114 TX-SR55 CIRCUIT NO. PART NO. DESCRIPTION Resistors R6100,R6101 4000201 or RF-5EGKR22 or R6102,R6103 4500245 or BPR55FK0.22 or R6104 4000132 RGC55 0.22,Metal plate R6140,R6141 417342234 R16J-22K,Carbon R6142,R6143 417342234 R16J-22K,Carbon R6144 417342234 R16J-22K,Carbon R6150,R6151 417341234 R16J-12K,Carbon R6152,R6153 417341234 R16J-12K,Carbon R6154 417341234 R16J-12K,Carbon...
  • Page 115 TX-SR55 CIRCUIT NO. PART NO. DESCRIPTION Plugs P6080,P6081 25055038 NPLG-2P29 P6082,P6083 25055038 NPLG-2P29 P6084 25055038 NPLG-2P29 P6301 25055042 NPLG-3P32 P6804A,P931A 25055701 NPLG-5P657 P6953A 25055806 NPLG-17P762 Retainer P6011A 27141860 (BUS-D) Heat sink D6904A 27160499 RAD-164 Screws D6904B,D6905B 82143010 3P+10FN(BC) Secondary circuit PC board (NAETC-8398-1R) CIRCUIT NO.
  • Page 116 TX-SR55 Video terminal PC board ass'y (NAVD-8464-1R) CIRCUIT NO. PART NO. DESCRIPTION Q2001,Q2002,Q2003 22241946R2 NJM2595M Q2004 22241779 LC74763-9836 Q2011 22241221R2 TC9164AF Q2101 22242154R3 ADV7183A Q2102 22278033DR2NE or MPC2933T or 22278033DR2JR NJM2391DL1-33 Q2103 22278018ER2NE MPC2918T Q2104 22242155R3 ADV7172 Q2106,Q2107 22241465R2 LA7106MFP...
  • Page 117 TX-SR55 CIRCUIT NO. PART NO. DESCRIPTION Capacitors C2053,C2065 394621017 or CE04W6.3V-100M(VR) or 394721017 CE04W6.3V100M(SC),Elect. C2054 394683397 CE04W50V-0.33M(VR),Elect. C2055 332101225R1 CK725B1H-122K1,Chip ceramic C2056 374726824 ECQ-B50V-682J,Plastic film C2058 374722234 ECQ-B50V-223J,Plastic film C2059 342102204R1 CC725CH1H-220J1,Chip ceramic C2060 342102704R1 CC725CH1H-270J1,Chip ceramic C2061 394684797 or CE04W50V-0.47M(VR) or...
  • Page 118 TX-SR55 CIRCUIT NO. PART NO. DESCRIPTION Resistors R2049 435033324R1 RN72K1J-332JE,Chip carbon R2050,R2058,R2059 435032214R1 RN72K1J-221JE,Chip carbon R2051 435038244R1 RN72K1J-824JE,Chip carbon R2052 435031524R1 RN72K1J-152JE,Chip carbon R2054 435031214R1 RN72K1J-121JE,Chip carbon R2056,R2061 435032724R1 RN72K1J-272JE,Chip carbon R2060 435031234R1 RN72K1J-123JE,Chip carbon R2062 435033334R1 RN72K1J-333JE,Chip carbon R2063...
  • Page 119 TX-SR55 CIRCUIT NO. PART NO. DESCRIPTION Relays RL2201,RL2202 25065645 or NPL-2P1A-DC4.5-169 or RL2203,RL2204 25065654 or NRL-2P2A-DC4.5-172 or RL2205 25065658 NRL-2P2A-DC4.5-173 Terminals P2001,P2002 25045729 NPJ-10PDBY517 P2003 25045727 NPJ-15PDBY515 P2201 25045813 NPJ-12PDGLR593 P6803 25045720 NPJ-1PDP510 Sockets JL6802A,JL6802B 25051088 NSCT-4P875 P2004 25051239 NSCT-14P1029...
  • Page 120 TX-SR55 CIRCUIT NO. PART NO. DESCRIPTION Resistors R7506,R7507 435031024R1 RN72K1J-102JE,Chip carbon R7581 435032214R1 RN72K1J-221JE,Chip carbon R7582 435038204R1 RN72K1J-820JE,Chip carbon R7583 435031814R1 RN72K1J-181JE,Chip carbon R7588 435038204R1 RN72K1J-820JE,Chip carbon R7611,R7621 435033314R1 RN72K1J-331JE,Chip carbon R7612,R7622 435034714R1 RN72K1J-471JE,Chip carbon R7613,R7623 435035614R1 RN72K1J-561JE,Chip carbon R7614,R7624...
  • Page 121 TX-SR55 Video 4 terminal PC board (NAVD-8409-1R) CIRCUIT NO. PART NO. DESCRIPTION Capacitors C2501,C2502 342104714R1 CC725CH1H-471J1,Chip ceramic C2503,C2504 332161040R1 CK725F1E-104Z1,Chip ceramic Resistors R2501,R2502 435033314R1 RN72K1J-331JE,Chip carbon R2503,R2504 435037504R1 RN72K1J-750JE,Chip carbon R2505 435037504R1 RN72K1J-750JE,Chip carbon Terminal P2503 25045680 NPJ-7PDB477 Sockets JL2501B...
  • Page 122 TX-SR55 Headphone terminal PC board (NAETC-8412-1R) CIRCUIT NO. PART NO. DESCRIPTION Q7801 22241383R2 NJM4565M-D Transistor Q7802 2215410R2 RN1441 Diode D7801 224550560R2 or UDZS5.6B or 224660564R2 HZU5.6B Coils L7701,L7703 233533M022R2 or NCH-1587-022M or L7704 231237M022R2 NCH-1471 L7801,L7802 233533M022R2 or NCH-1587-022M or...
  • Page 123 18 Park Way, Upper Saddle River, N.J. 07458, U.S.A. Tel: 201-785-2600 Fax: 201-785-2650 http://www.onkyousa.com ONKYO EUROPE ELECTRONICS GmbH Liegnitzerstrasse 6, 82194 Groebenzell, GERMANY Tel: +49-8142-4401-0 Fax: +49-8142-4401-555 http://www.onkyo.net ONKYO EUROPE UK Office Suite 1, Gregories Court, Gregories Road, Beaconsfield, Buckinghamshire, HP9 1HQ UNITED KINGDOM Tel: +44-(0)1494-681515 Fax: +44(0)-1494-680452...

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