Onkyo TX-L55 Service Manual
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Onkyo TX-L55 Service Manual

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See also: Instruction Manual
TX-L55
MODEL
Silver models
SMPP,SMPA
SMGQ,SMGR,SMGT
SERVICE MANUAL
SERVICE MANUAL
AV Receiver
TX-L55
230-240V AC, 50Hz
220-230V AC, 50Hz
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.
TX-LR552
MODEL
Titanium and Silver models
TMDD
120V AC, 60Hz
SMDD
120V AC, 60Hz
ON THE
TX-L55/LR552
Ref. No. 3822
082004

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Summary of Contents for Onkyo TX-L55

  • 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: Specifications

    TX-LR552 SPECIFICATIONS Amplifier Section General Power output: Front L/R 65 W + 65 W Power supply: AC 120 V, 60 Hz Center 65 W Power consumption: 110 W Surround L/R 65 W + 65 W Standby power Surround back L/R 65 W consumption: 1.70 W (6 , 1 kHz, FTC)

  • Page 3: Service Procedures

    Press the REMOTE MODE [AMP] wall outlet, wait at least Þve seconds, and then plug it back in again. button followed by the [SETUP] To reset the TX-L55/LR552 to its f actor y defaults, turn it on and, TUNER button.
  • Page 4 TX-LR552 EXPLODED VIEW P9301 P850 P1101 T9001 L901 F9001...

  • Page 5: Block Diagram

    TX-L55/LR552 BLOCK DIAGRAM MUTE Q4301 TUNER PACK AUDIO SEL BD3817 MUTE MUTE TONE MUTE TONE MUTE MUTE MUTE MUTE MUTE PP TYPE ONLY Q1181 DECODER BU1924FS U2701 TORX179L U2702 Q7501 Q7502 Q7800 CODEC TORX179L AK4588 CS494003CQ MX29LV040 D TYPE ONLY...
  • Page 6 TX-L55/LR552 BLOCK DIAGRAM P4602 MUTE HEAD PHONE MUTE Q5001 Q5001 Q5101 P5512 EXCEPT D TYPE MODULATOR DRIVER P5511 D TYPE ONLY TC2001 TP2150B FRONT L/R +/-B MAIN AMP P9301B Q5001 Q5001 Q5101 DRIVER MODULATOR AC_CABLE +/-7V DRIVER TC2001 TP2150B SELECTOR...

  • Page 7: Schematic Diagram

    TX-LR552 SCHEMATIC DIAGRAM 3 DSP section 2 V1COUT V2CIN DVDCIN +5VVD NJM2279M Q2101 NADG-8338 -5VVD P2102 C2127 104Z V2CIN C2119 10/16 R2134 V2YIN V1CIN C2140 470J COUT2 C2120 10/16 V2VIN R2133 COUT1 R2128 75 V1COUT V1YOUT V2YIN R2129 75 V1YOUT DVDYIN R2130 75 V1VOUT...
  • Page 8 TX-LR552 SCHEMATIC DIAGRAM 3 DSP section 2 +5VVD 78L09 +9VD Q9607 R9606 C2012 R2005 0.47/50 +12VA 78M12HF Q9602 R9602 MM1093NF Q2001 C2003 R2006 R9603 C2008 103Z 2.2/50 Q9603 -12VA 79M12HF +18V 78M05HF 78M12HF +5VVD R9510 Q9604 Q9609 R9604 R9513 D9503 D9502 +5VVD RL1N4003...
  • Page 9 TX-LR552 SCHEMATIC DIAGRAM 6 SPEAKER TERMINAL SECTION SP-A SP-B NAETC-8352 P5511 FL_B FR_B P5501 102J 102J 102J 102J 102J 102J 102J 102J C5601 C5602 C5607 C5608 C5603 C5604 C5605 C5606 RL5801:C RL5801:C RL5804:C RL5801:B RL5804:B P5601B RL5802:C G-SL G-SR RL5802:B SL-P P5603B RL5803:B...
  • Page 10 TX-LR552 SCHEMATIC DIAGRAM 7 VIDEO SECTION COAX OPT 1 OPT 2 TO NADG-8338 NAVD-8344 -5VVD D22011SS355 R2750 -5VVD +5VVD C2202 102K L2701 RL2201 +5VDSP C2750 DIN3 022K 101J GNDD DIN2 DIN1 R2722 R2723 R2724 R2725 R2248 10K 150K 100K 150K 100K R2247 10K RL2202...
  • Page 11 L55/LR552 SCHEMATIC DIAGRAM 8 NAETC-8341 P4602 P4402B R4601 HPFL L4601 HPGND L4602 HPFR R4602 L4603 HPIN L4601~L4603: BK1608LM-182T E4601 NAETC-8340 P2002 P2003 DIN1 DIN2 DIN3 +5VDSP GNDD GNDD CPNT CONV +9VVD +5VVD -5VVD GNDV GNDV GNDV...
  • Page 12 TX-L55 SCHEMATIC DIAGRAM 1 DISPLAY SECTION Q802 HFA-12SM50T R8901 100K NADIS-8346 R8902 100K R8903 100K R8904 100K C893 33/50 R877 R876 R874 R873 R872 R875 R871 R828 1.8K 3.9K Q801 100K Q828 2SC2712-GR MPD780232GC-091-8BT LISTENING TU DOWN TU UP TONE...
  • Page 13 TX-LR552 SCHEMATIC DIAGRAM 1 DISPLAY SECTION Q8020 HFA-12SM50T R8911 100K R8912 100K R8913 100K R8914 100K NADIS-8343 C8930 47/50 R8280 100K Q8010 R8750 R8760 R8740 R8730 R8770 R8720 R8710 Q8280 2SC2712-GR 1.8K 3.9K MPD780232GC-091-8BT TU DOWN TU UP R8270 10K R8260 10K AVDD KEY0...
  • Page 14 TX-L55/LR552 SCHEMATIC DIAGRAM 2 DSP section 1 +13V POWER TO NADIS-8346(Other models) FLAC1 FLAC2 TO NADIS-8343(D model) P1101 TO TUNER PACK P7001B 78L07 +12VA Q4321 R4300 R4341 NADG-8338 VMUT1 +5.6V VMUT2 CONV 3.3/50 D model only +5VTU +12VA CPNT R4301...
  • Page 15 TX-L55 SCHEMATIC DIAGRAM 3 DSP section 2 V1COUT V2CIN DVDCIN +5VVD NJM2279M Q2101 NADG-8338 -5VVD +12VA 78M12HF Q9602 R9602 P2102 C2127 104Z V2CIN C2119 10/16 V2YIN V1CIN COUT2 C2120 10/16 V2VIN COUT1 R9603 R2128 75 V1COUT V1YOUT Q9603 -12VA 79M12HF...
  • Page 16 TX-LR552 SCHEMATIC DIAGRAM 3 DSP section 2 V1COUT V2CIN DVDCIN +5VVD 78L09 +9VD Q9607 R9606 +5VVD C2012 R2005 NJM2279M 0.47/50 Q2101 NADG-8338 -5VVD +12VA 78M12HF Q9602 R9602 P2102 C2127 104Z V2CIN MM1093NF Q2001 C2119 10/16 V2YIN V1CIN R2134 C2140 470J COUT2 C2120 10/16 V2VIN...
  • Page 17 C9101 R5901 D9102 MODEL TYPE T9002 10000/50 NPT-1500* 10/16 334J 1SS350 8.2K(1/2W) TX-LR552 MDD NPT-1506D P9001A P9003A T9001 POFF TX-L55 MPP/MPA/MGT/MGQ NPT-1398P/G C5904 R5902 10000/50 D9001 T9002 8.2K(1/2W) S1NB60-4062 NPT-****(See the table above.) POWER -36.5 P9002A P9101A C9003 223J CAUTION THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY.
  • Page 18 TX-L55/LR552 NAAF-8350 SCHEMATIC DIAGRAM 5 Amplifier section 2 VN10 +5VD PAPOWER GNDA VN10 Q5303 RN1441 104K L5703 L5703 C5203 2.2K C5103 100uH 100uH GNDP M1FL20U D5723 2.2/50 NAAF-8350 R5103 R5363 Q5713 IRF9520N D5713 C5743 GNDP R5723 M1FL20U 47/35 C5104 2.2/50 R5104 47/6.3...
  • Page 19 TX-LR552 PC BOARD-CONNECTION DIAGRAM SCH.6 SPEAKER TERMINAL PC BOARD NAETC-8352 P9301B POWER SUPPLY TERMINAL PC SCH.4 BOARD P7003A NAPS-8342 P9302B P9001A NAAF-8350 R5121 P9101A R5122 SCH.4/5 P5601A DIGITAL P4401B AMPLIFIER R5123 PC BOARD R5124 P5603A T9001 P9502B R5125 NPT-1500D R5126 P5605A P8310B STANDBY SWITCH...
  • Page 20 TX-LR552 PC BOARD-CONNECTION DIAGRAM HEADPHONE TERMINAL BOARD PC BOARD FRONT SPEAKER SCH.8 TERMINAL PC BOARD NAETC- NAETC- 8341 8351 TUNER PACK SCH.6 P4402B NADG-8338 MAIN CIRCUIT PC BOARD CONNECTOR PC BOARD SCH.2/3 5122 NAETC-8340 SCH.8 P4402A 401B P4401A P1101 R5124 P7002 P7003B SCH.7...
  • Page 21 TX-L55 PC BOARD-CONNECTION DIAGRAM SCH.6 SPEAKER TERMINAL PC BOARD NAETC-8352 P9301B POWER SUPPLY TERMINAL PC SCH.4 BOARD P7003A NAPS-8342 P9302B P9001A NAAF-8350 R5121 P9101A R5122 SCH.4/5 P5601A DIGITAL P4401B AMPLIFIER R5123 PC BOARD R5124 P5603A T9001 P9502B R5125 NPT-1398P/G R5126...
  • Page 22 TX-L55 PC BOARD-CONNECTION DIAGRAM HEADPHONE TERMINAL PC BOARD FRONT SPEAKER SCH.8 TERMINAL PC BOARD NAETC- NAETC- 8341 8351 TUNER PACK SCH.6 P4402B NADG-8338 MAIN CIRCUIT PC BOARD CONNECTOR PC BOARD SCH.2/3 NAETC-8340 SCH.8 P4402A P4401A P1101 P7002 P7003B SCH.7 NAVD-8344...
  • Page 23 TX-L55/LR552 – 1 – – 1 –...
  • Page 24 TX-L55/LR552 TX-L55/LR552 000000 – 2 – – 2 –...
  • Page 25 TX-L55/LR552 PRINTED CIRCUIT BOARD VIEW from Component side (NAPS-8342)
  • Page 26 TX-L55/LR552 PC BOARD VIEW (NAAF-8350)
  • Page 27 TX-L55/LR552 PC BOARD VIEW (NAAF-8350)

  • Page 28: Ic Block Diagrams And Descriptions

    TX-L55/LR552 IC BLOCK DIAGRAMS AND DESCRIPTIONS BD3817KS (7ch Volume with 10ch input selector) BLOCK DIAGRAM LOGIC AGND1 1 VINFR AGND2 2 GOUTFL Input Input select2 select1 INA1 3 VINFL INA2 4 AGND11 INB1 5 TNF1 TREBLE INB2 6 TNF2 INC1 7...
  • Page 29 TX-L55/LR552 IC BLOCK DIAGRAMS AND DESCRIPTIONS BD3817KS (7ch Volume with 10ch input selector) TERMINAL DESCRIPTION Pin No. Pin Name Description Pin No. Pin name Description AGND1 Analog ground terminal GOUTCB CBch input gain output terminal AGND2 Analog ground terminal VINCB...
  • Page 30 TX-L55 IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS BU1924FS (RDS Decoder) <European model only> BLOCK DIAGRAM 100k 120k 8th Switched 100k capacitor filter comparator anti-aliasing filter Vref RCLK (16) Analog Power supply QUAL RDATA Bi-phase Differential 57kHz (12) decoder 1187.5Hz decoder...
  • Page 31 TX-L55/LR552 IC BLOCK DIAGRAMS AND DESCRIPTIONS CS494003(Audio Decoder DSP) BLOCK DIAGRAM 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...
  • Page 32 TX-L55/LR552 IC BLOCK DIAGRAMS AND DESCRIPTIONS CS494003(Audio Decoder DSP) SD_DQM1 - SDRAM Data Mask 1 FILT1 - Phase-Locked Loop Filter SD_DQM0 - SDRAM Data Mask 2 FILT2 - Phase Locked Loop Filter NV_CS, GPIO14 - SRAM Chip Select, General Purpose I/O...
  • Page 33 TX-LR552 IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS(LR552 only) LA7106MFP(75 ohm video driver) MM1512(Y-C mixer circuit) BLOCK DIAGRAM Bias +VCC VIN1+ 12dB VOUT1 Clamp NFB1 -6dB MUTE1 VOUT2 VIN2+ DR CTL NFB2 VOUT3 -VCC1 MUTE2 VIN3+ -VCC2 NFB3 MM1093NF(4fsc clock generator) OSCILLATOR R Vcc1 fsc OUTPUT...
  • Page 34 TX-L55/LR552 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 35 TX-L55/LR552 IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS NJM2279 (3 Input/2 Output Video Switch) BLOCK DIAGRAM MUTE1 Vin1 DRIVER Vout1 1. Vin3 8. V+ Vin2 2. SW1 9. N.C 4.45k 3 Vin2 10. Vout1 4.14k DRIVER 4. MUTE2 11. MUTE1 Vin3 Vout2 5.
  • Page 36 TX-LR552 IC BLOCK DIAGRAMS AND DESCRIPTIONS TA1270BF(PAL/NTSC Video Chroma and Sync. Processing system for PIP/POP/PAP) DAC2 Y OFFSET PEDESTAL I C BUS PEDESTAL CLAMP TEST CONTROL CLAMP DAC1 SW GND DAC1 SUB- Y DL CONTRAST OFFSET HI:2CH/LOW:24h Y IN ADRS SW PEDESTAL CLAMP DAC Vcc...
  • Page 37 TX-L55/LR552 IC BLOCK DIAGRAMS AND DESCRIPTIONS TC2100(Audio Signal Processor) Pin Connection 28-pin SOIC (Top View) BIASCAP INV2 FBKGND2 OAOUT2 DCM P BBM 0 FBKOUT2 BBM 1 VPW R M UTE FBKGND1 INV1 FBKOUT1 OAOUT1 HM UTE AGND VPPSENSE OVRLDB VNNSENSE...

  • Page 38: Pin Description

    TX-L55/LR552 IC BLOCK DIAGRAMS AND DESCRIPTIONS TC2150(Digital Power Amplifier Driver) Pin Connection 64-pin LQFP (Top View) 51 50 48 47 40 39 38 37 36 35 34 33 45 44 42 41 OCS1LN OCS2LN OCS1LP OCS2LP VBOOT1 VBOOT2 SW-FB SMPSO...
  • Page 39 TX-L55/LR552 IC BLOCK DIAGRAMS AND DESCRIPTIONS 74HCU04F (Hex Inverter) TC74HCT7007A (Hex Buffer) Truth table Truth table (TOP VIEW) (TOP VIEW) TC74VHC541FT(Octal Bus Buffer) INPUTS OUTPUT X :Don't care Z :High impedance TC7WU04FU (Buffer) TK15420(Operation Amplifier) OUT A -IN A OUT B...
  • Page 40 TX-L55/LR552 MAIN MICRO PROCESSOR-CONNECTION DIAGRAM RL901 RL5803 POWER SW RELAY Q5803 Q2101~Q2103 VIDEO SELECTOR SW Q9002 NJM2279M RL5802 Q5802 RL5801 Q5801 RL5804 TUNER PACK Q5804 Q5851,Q5852 SPEAKER DET. RELAY COMPONENT VIDEO HEADPHONE DET. SW SELECTOR SWITCH PRE AMPLIFIER Q4409,Q4410 MUTING SW...
  • Page 41 TX-L55/LR552 Q801:MPD780232GC-091-8BT(Sub-micro processor) Symbol Description Symbol Description Segment output pin P22 Positive power supply (+5V) Ground pin Segment output pin P21 CLOCK Oscillator connection pin Segment output pin P20 CLOCK Oscillator connection pin Segment output pin P19 FARIC Not used.
  • Page 42 TX-L55/LR552 Q7008:MPD78F4225GC (Main microprocessor) No. Symbol Signal Act. Description Symbol Signal Act. Description 1 P15/ANI5 No connection 41 P65/~WR S video detection input pin 2 P16/ANI6 No connection 42 P66/~WAIT Not used 3 P17/ANI7 BAND A/D Tuner frequency setting pin...

  • Page 43: Adjustment And Confirmation Procedures

    TX-L55/LR552 ADJUSTMENT AND CONFIRMATION PROCEDURES 1.Offset voltage adjustment Connect the DC voltmeter to speker terminal. Adjust the trimming resistors R5121 to R5126 so that the reading of voltmeter becomes 0+/-100mV. Note: No load and No signal NAAF-8350 R5121 R5123 R5125...

  • Page 44: Packing View

    TX-L55/LR552 PACKING VIEW Put a label 61 between page 2 and page 3 of instruction manual E. Speaker Cable Put a label 61 between page 2 and page 3 of instruction manual E. Speaker Cable European model only Front side...

  • Page 45: Exploded View Parts List

    TX-LR552 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. NOTE: <S>:Silver model only <T>:Titanium model only REF. NO. PART NO. DESCRIPTION 27100448 Chassis 27175319B 28141494 Cushion...
  • Page 46 TX-LR552 PACKING VIEW-PARTS LIST REF. NO. PART NO. DESCRIPTION 29092209 29100141A 700*600,Polybag 29110149 Tape, cellophane 29110148 W48,Tape PP 29100097-1A 350*250,Polybag 29054221 Carton box <S> 29054281 Carton box <T> 29363766 Label UPC <S> 29363994 Label UPC <T> 29363059A Label, speaker cable 232201 NMA-3064,AM loop antenna 292191...

  • Page 47: Printed Circuit Board-Parts List

    TX-L55/LR552 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. NOTE: <D>:120V model only <T>:Asian model for 220V <P>:European model only <O>: Except 120V model <Q>:Hongkong model only <A>:Australian model only...
  • Page 48 TX-L55/LR552 CIRCUIT NO. PART NO. DESCRIPTION Diodes D7401~D7404 223269R2 or 1SS355 or 223234R2 1SS352 D9502~D9505 22380260 or RL1N4003 or D9507 22380035 GP104003E D9508 224663604R2 or HZU36B or 224553600R2 UDZS36B D9513 22380341F D2SB80A Oscillators X1181 3010203 AF6146CG <P> X2001 3010369 HC-49/U033.579545M <D>...
  • Page 49 TX-L55/LR552 C2025,C2026,C2028 332151030R1 CK725F1H-103Z1,Ceramic <D> C2029,C2037,C2038 332151030R1 CK725F1H-103Z1,Ceramic <D> CIRCUIT NO. PART NO. DESCRIPTION Capacitors C2031,C2043,C2044 332161040R1 CK725F1E-104Z1,Ceramic <D> C2034,C2041,C2042 394721017 or CE04W6.3V100M(SC) or 394621017 CE04W6.3V-100M(VR),Elect. <D> C2035,C2036,C2071 394744707 or CE04W16V47M(SC) or 394644707 CE04W16V-47M(VR),Elect. <D> C2039,C2040,C2160 332151030R1 CK725F1H-103Z1,Ceramic <D> C2108,C2113...
  • Page 50 TX-L55/LR552 C4422 342102214R1 CC725CH1H-221J1,Ceramic C4433,C4434 393321017 CE04W6.3V-100M(VX),Elect. C4435,C4436,C7520 342101014R1 CC725CH1H-101J1,Ceramic CIRCUIT NO. PART NO. DESCRIPTION Capacitors C4437,C4438,C4439 393341007 CE04W16V-10M(VX),Elect. C4440,C4481,C4482 393341007 CE04W16V-10M(VX),Elect. C4450,C4451 394642217 CE04W16V-220M(VR),Elect. C4501,C4503 332132245R1 CK725B1A-224K1,Ceramic C4502,C4504 337394745R1 CK732B1C-474K,Ceramic C4601,C4602 342101024R1 CC725CH1H-102J1,Ceramic C4603 332101025R1 CK725B1H-102K1,Ceramic C7001 3000121, SCDA5R5104A,...
  • Page 51 TX-L55/LR552 394680227 CE04W50V-2.2M(VR),Elect. C9611,C9615 374721044 ECQ-V50V-104J,Plastic C9613 374721044 ECQ-V50V-104J,Plastic <D> CIRCUIT NO. PART NO. DESCRIPTION Capacitors C9614 394741007 or CE04W16V10M(SC) or 394641007 CE04W16V-10M(VR),Elect. <D> C9617 394744707 or CE04W16V47M(SC) or 394644707 CE04W16V-47M(VR),Elect. Resistors R1102,R1103 435032234R1 RN72K1J-223JE,Carbon R1104 435031044R1 RN72K1J-104JE,Carbon R1138,R1139 435032234R1...
  • Page 52 TX-L55/LR552 R4353,R4354,R4431 435034724R1 RN72K1J-472JE,Carbon R4401,R4402,R4403 435032244R1 RN72K1J-224JE,Carbon R4404,R4405,R4406 435032244R1 RN72K1J-224JE,Carbon R4407,R4408,R4409 435034714R1 RN72K1J-471JE,Carbon R4410,R4411,R4412 435034714R1 RN72K1J-471JE,Carbon CIRCUIT NO. PART NO. DESCRIPTION Resistors R4413,R4414,R4415 435032234R1 RN72K1J-223JE,Carbon R4416,R4417,R4418 435032234R1 RN72K1J-223JE,Carbon R4419,R4420,R4421 435032234R1 RN72K1J-223JE,Carbon R4422,R4423,R4424 435032234R1 RN72K1J-223JE,Carbon R4425,R4427,R7000 435031014R1 RN72K1J-101JE,Carbon R4426,R4429 435032234R1 RN72K1J-223JE,Carbon...
  • Page 53 TX-L55/LR552 R7103 435031034R1 RN72K1J-103JE,Carbon <T/Q> 435033334R1 RN72K1J-333JE,Carbon <A> 435035634R1 RN72K1J-563JE,Carbon <P> R7114,R7143 435031034R1 RN72K1J-103JE,Carbon R7120,R7134 435031024R1 RN72K1J-102JE,Carbon R7121,R7409,R7410 435031044R1 RN72K1J-104JE,Carbon CIRCUIT NO. PART NO. DESCRIPTION Resistors R7161,R7311,R7312 435030004R1 RN72K1J-000JE,Carbon R7178 435033334R1 RN72K1J-333JE,Carbon <O> R7179 435033334R1 RN72K1J-333JE,Carbon <D/T/A/Q> R7180 435031034R1 RN72K1J-103JE,Carbon...
  • Page 54 TX-L55/LR552 R9509 435031044R1 RN72K1J-104JE,Carbon R9602,R9603 452530104F RNU1/2WCJ-1,Metal R9604,R9605 452530154F RNU1/2WCJ-1.5,Metal R9606 4500183 RNU1/4WJ-22,Metal <D> R9609 443523314 RS1/2WBJ-330,Metal oxide Fuse R9512 252300 2.5A-ULSE-TL250 CIRCUIT NO. PART NO. DESCRIPTION Terminals P2102 25045729 NPJ-10PDBY517 P2104 25045727 NPJ-15PDBY515 P4301 25045303 or NPJ-4PDBL162 or 25045575...
  • Page 55 TX-L55/LR552 Q2206 2214530R2 RN2402 <D> Q828 2213145R2 2SC2712-GR <O> Q8280 2213145R2 2SC2712-GR <D> Q831,Q832,Q833,Q834 2216470R2 DTC114YKA <O> Q8310,Q8330,Q8340 2216470R2 DTC114YKA <D> Q9002 2216690R2 DTC123JKA Photo couplers U2701,U2702 24120101 TORX179L CIRCUIT NO. PART NO. DESCRIPTION Diodes D2201 223269R2 or 1SS355 or...
  • Page 56 TX-L55/LR552 C2711,C2712 332101035R1 CK725B1H-103K1,Ceramic C2733,C2751 332161040R1 CK725F1E-104Z1,Ceramic C2750 342101014R1 CC725CH1H-101J1,Ceramic C2752 342100802R1 CC725CH1H-080D1,Ceramic C806,C807,C808 342103304R1 CC725CH1H-330J1,Ceramic <O> C8060,C8070,C8080 342103304R1 CC725CH1H-330J1,Ceramic <D> C809,C810 342103304R1 CC725CH1H-330J1,Ceramic <O> C8090,C8100 342103304R1 CC725CH1H-330J1,Ceramic <D> C821,C824,C884 332161040R1 CK725F1E-104Z1,Ceramic <O> CIRCUIT NO. PART NO. DESCRIPTION Capacitors C8210,R8240,R8241 332161040R1 CK725F1E-104Z1,Ceramic <D>...
  • Page 57 TX-L55/LR552 R821,R824 435032724R1 RN72K1J-272JE,Carbon <O> R8210,R8240,R8241 435032724R1 RN72K1J-272JE,Carbon <D> R827,R851,R852 435031034R1 RN72K1J-103JE,Carbon <O> R8270,R8510,R8520 435031034R1 RN72K1J-103JE,Carbon <D> R828 435031044R1 RN72K1J-104JE,Carbon <O> R8280 435031044R1 RN72K1J-104JE,Carbon <D> R832,R833,R834 435033314R1 RN72K1J-331JE,Carbon <O> R8330,R8340 435033314R1 RN72K1J-331JE,Carbon <D> R853,R854,R871 435031034R1 RN72K1J-103JE,Carbon <O> R8530,R8540,R8710 435031034R1 RN72K1J-103JE,Carbon <D>...
  • Page 58 TX-L55/LR552 P8310A 2002E391005UL NSAS-10P1441 <D> P851 200EE390606UL NSAS-6P1437 <O> P9101A 25051088 NSCT-4P875 Plugs P8310B 25055369 NPLG-5P352 <D> P9301B,P9302B 25055675 NPLG-2P631 Label F9001C 29361769 T1.6AL250V <O> Cushions E8020A,E8020B 28141531 <D> E802A,E802B 28141531 <O> DIGITAL AMPLIFIER PC BOARD (NAAF-8350-1B/1D/1F/1H/1I) FRONT SPEAKER TERMINAL PC BOARD (NAETC-8351-1B/1D/1F/1I) SPEAKER TERMINAL PC BOARD (NAETC-8352-1B/1D/1F/1H/1I) CIRCUIT NO.
  • Page 59 TX-L55/LR552 C5021,C5023,C5025 342102214R1 CC725CH1H-221J1,Ceramic C5031,C5033,C5035 374721044 ECQ-V50V-104J,Plastic C5041,C5043,C5045 394624707 or CE04W6.3V-47M(VR) or 394744707 CE04W16V47M(SC),Elect. C5101,C5102,C5103 393380227 CE04W50V-2.2M(VX),Elect. C5104,C5105,C5106 393380227 CE04W50V-2.2M(VX),Elect. C5111,C5112,C5113 332121045R1 CK725B1C-104K1,Ceramic C5114,C5115,C5116 332121045R1 CK725B1C-104K1,Ceramic C5203,C5205 332121045R1 CK725B1C-104K1,Ceramic C5301 342104714R1 CC725CH1H-471J1,Ceramic <P> C5301,C5303,C5305 342101814R1 CC725CH1H-181J1,Ceramic <D/T/A/Q> C5302 342101814R1 CC725CH1H-181J1,Ceramic <P>...
  • Page 60 TX-L55/LR552 R5031,R5033,R5035 435038222R1 RN72K1J-822FE,Carbon R5041,R5043,R5045 435030474R1 RN72K1J-047JE,Carbon R5101,R5102,R5103 435032234R1 RN72K1J-223JE,Carbon R5104,R5105,R5106 435032234R1 RN72K1J-223JE,Carbon R5111,R5112,R5113 435031054R1 RN72K1J-105JE,Carbon R5114,R5115,R5116 435031054R1 RN72K1J-105JE,Carbon R5121,R5122,R5123 5210265 N06HR50KBC,Trimming R5124,R5125,R5126 5210265 N06HR50KBC,Trimming R5131,R5132,R5133 435032232R1 RN72K1J-223FE,Carbon R5134,R5135,R5136 435032232R1 RN72K1J-223FE,Carbon R5291,R5293,R5295 435032234R1 RN72K1J-223JE,Carbon R5292,R5294,R5296 435031034R1 RN72K1J-103JE,Carbon R5301,R5302,R5303 435031024R1 RN72K1J-102JE,Carbon CIRCUIT NO.
  • Page 61 TX-L55/LR552 Relays RL5801,RL5802 25065632 or NRL-2P5A-DC12-160 or RL5803 25065607 or NRL-2P5A-DC12-155 or 25065598 NRL-2P3A-DC12-148 RL5804 25065632 or NRL-2P5A-DC12-160 or 25065607 or NRL-2P5A-DC12-155 or 25065598 NRL-2P3A-DC12-148 <D> RL5851,RL5852 25065664 NRL-2P2A-DC12-178 Terminals P5501 25060408 NTM-8PDML337 P5511 25060407 NTM-8PDML336 <D> P5512 25060385 NTM-4PDMN316 <P/T/A/Q>...

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Tx-lr552

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