Onkyo TX-L55 Service Manual Download Page 20

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TX-LR552

PC BOARD-CONNECTION DIAGRAM

TUNER PACK

401B

5122

R5124

R5126

P5651B

P7001C

P7001B

P4401A

P1101

P7002

P9001B

P9002B

P9101B

P9003B

P7003B

U12

U21

SCH.1

SCH.2/3

SCH.7

SCH.6

SCH.8

P8310A

NAETC-
8351

NAVD-8344

NADG-8338

NAETC-8340

NAETC-
8341

NADIS-8346

P4402B

P4402A

MAIN CIRCUIT
PC BOARD

HEADPHONE
TERMINAL
PC BOARD

FRONT SPEAKER
TERMINAL PC BOARD

BOARD

CONNECTOR
PC BOARD

COMPONENT VIDEO PC BOARD

DISPLAY CIRCUIT PC BORAD

P2004

P2003

P2002

P2001

Summary of Contents for TX-L55

Page 1: ...s TX L55 SAFETY RELATED COMPONENT WARNING 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 ON...

Page 2: ...CB PR CR 0 28 Vp p 75 S Video C 1 0 Vp p 75 composite Component video frequency response 5 Hz 50 MHz Tuning frequency range 87 5 107 9 MHz Usable sensitivity Stereo 17 2 dBf 2 0 V 75 IHF Mono 11 2 dBf...

Page 3: ...5 Setting the AM tuning step frequency Asian models only CIRCUIT NO PART NO DESCRIPTION Note D 120V model only P 230V model only G 220V model only F9001 252254 or 2 5A T UL ST2 or 252160 2 5A UL T 23...

Page 4: ...R552 EXPLODED VIEW T9001 P9301 F9001 L901 P1101 1 2 3 2 3 2 3 2 3 4 4 4 4 5 5 6 4 11 18 29 27 40 40 32 35 37 37 37 41 P850 24 15 17 11 38 17 27 28 28 36 7 9 8 8 31 U6 U1 U3 U4 U5 U8 U9 U11 U13 U21 19...

Page 5: ...CK Q2001 MM1093NF FSC GEN Q2005 3LINE Y C SEP TC90A69F Q2051 6dB MX29LV040 ROM Q7502 M M MUTE MUTE MUTE MUTE MUTE MUTE MUTE MUTE MUTE Q1181 BU1924FS RDS DECODER Q2106 Y C MIX MM1512 V2 IN P2104 P2104...

Page 6: ...V SELECTOR 7V TUNER 5V 5V VIDEO 36V 9V VIDEO D TYPE ONLY SURR L R C SURR B SPEAKER B COMPONENT OUT COMPONENT 1 COMPONENT 2 P2301 P2302 P2303 HEAD PHONE P5511 P5501 FRONT L R P5511 P5512 D TYPE ONLY D...

Page 7: ...122 10 16 L2003 220K L2004 220K R2104 75 R2117 75 R2111 75 C2111 470J C2115 470J C2117 470J R2105 75 R2118 75 R2112 75 R2129 75 R2130 75 R2128 75 D2 1SS D2102 1SS355 5VVD 5VVD 5VVD 5VVD C2156 100 6 3...

Page 8: ...010 101K L2006 220K L2001 330K L2005 220K L2002 220K L2003 220K L2004 220K Q2001 MM1093NF 1 CRPMA 2 ACC 3 APC1 4 XTAL 5 GND1 6 GND2 7 FSC 8 NC 9 R 10 VCC1 11 VCC2 12 C 13 APC2 14 4FSC 15 BST 16 VIDEO...

Page 9: ...C123JKA P7003A 9 8 7 6 5 4 3 2 1 R5861 100 R5862 100 R5863 100 RL5803 C 5 4 RL5803 B 2 3 C5801 104Z C5804 104Z C5802 104Z C5803 104Z R5803 120 1W R5802 120 1W R5804 120 1W C5851 104Z C5852 104Z R5801...

Page 10: ...IN 41 DACVcc 42 CVcc 43 UV CbCrSW 44 fsc 45 1HDL_CONT 46 SECAN_CONT 47 B Y Cb 48 R Y Cr 1 4 43 2 N_PAL 3 3 58 4 APC 5 CGND 6 CROMAIN 7 V_SEP 8 SYNCIN 9 SYNCOUT 10 AFC 11 SYNCGND 12 32fHVCO 13 VDOUT 14...

Page 11: ...41 NAETC 8340 TO NADG 8338 TO NAVD 8344 TO NADG 8338 HEAD PHONE P2002 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 P2003 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 P4402B 5 4 3 2 1 C4604 104Z C4605...

Page 12: ...801 MPD780232GC 091 8BT 61 P4 62 P3 63 P2 64 P1 65 P36 66 NC 67 14G 68 13G 69 12G 70 11G 71 10G 72 9G 73 8G 74 7G 75 6G 76 5G 77 4G 78 3G 79 2G 80 1G 1 5V 2 GND 3 CLOCK 4 CLOCK 5 FRAIC 6 RESET 7 SUBCL...

Page 13: ...60 R8660 0 X8010 5MHz 2 D8330 D8340 S8620 R8770 390 R8760 470 R8750 820 R8740 1K R8730 1 8K R8720 3 9K R8710 10K R8210 2 7K R8711 100 C8711 100 6 3 C8711 100 6 3 C8712 104Z R8712 100 R8620 390 U8711 P...

Page 14: ...22 P43 AD3 23 P44 AD4 24 P45 AD5 25 P46 AD6 26 P47 AD7 27 P50 A8 28 P51 A9 29 P52 A10 30 P53 A11 31 P54 A12 32 P55 A13 33 VSS1 34 P56 A14 35 P57 A15 36 P60 A16 37 P61 A17 38 P62 A18 39 P63 A19 40 P64...

Page 15: ...6 3 5VVD 5VVD C2196 470 6 3 C2136 104Z C2139 100 6 3 C2154 104Z C2151 100 6 3 5VVD 5VVD C2194 470 6 3 C2138 100 6 3 C2135 104Z C2150 100 6 3 C2153 104Z R9609 330 R9506 22 Q2102 NJM2279M 14 V 13 SW2 12...

Page 16: ...3 APC1 4 XTAL 5 GND1 6 GND2 7 FSC 8 NC 9 R 10 VCC1 11 VCC2 12 C 13 APC2 14 4FSC 15 BST 16 VIDEO R2104 75 R2117 75 R2111 75 C2111 470J C2115 470J C2117 470J R2105 75 R2118 75 R2112 75 R2129 75 R2130 75...

Page 17: ...4 NC 5 AGND 6 V5 7 OCD1 8 NC 9 CSS 10 OCD2 11 NC 12 NC 13 Y2 14 Y2B 15 NC 16 Y1B 17 Y1 18 NC 19 NC 20 NC 21 NC 22 NC 23 NC 24 NC 25 NC 26 NC 27 VBOOT2 28 NC 29 NC 30 OCS2LP 31 OCS2LN 32 NC 33 OCS2HP 3...

Page 18: ...3 M1FL20U D5723 M1FL20U D5425 M1FL20U D5435 M1FL20U D5436 M1FL20U D5426 M1FL20U D5735 M1FL20U 5VD B B D5725 M1FL20U D5445 M1FL20U D5446 M1FL20U Q5105 TP2150B 1 NC 2 AGND 3 NC 4 NC 5 AGND 6 V5 7 OCD1 8...

Page 19: ...24 R5123 R5126 R5125 P9502B P5605B P5603B P5601B P5651A P7003A U5 U13 U9 U11 T9001 NPT 1500D SCH 4 SCH 4 5 SCH 6 SCH 1 P P8310B P9302B NAPS 8342 NAETC 8352 NAAF 8350 NASW 8348 SPEAKER TERMINAL PC BOAR...

Page 20: ...U21 U4 U1 U3 U6 U8 SCH 1 SCH 2 3 SCH 7 SCH 6 SCH 8 SCH 8 P8310A NAETC 8351 NAVD 8344 NADG 8338 NAETC 8340 NAETC 8341 NADIS 8346 P4402B P4402A MAIN CIRCUIT PC BOARD HEADPHONE TERMINAL PC BOARD FRONT SP...

Page 21: ...R5122 R5124 R5123 R5126 R5125 P9502B P5605B P5603B P5601B P5651A P7003A P U5 U13 U U11 T9001 NPT 1398P G SCH 4 SCH 4 5 SCH 6 SCH 1 P831B P831A P9302B NAPS 8342 NAETC 8352 NAAF 8350 NAS 834 SPEAKER TER...

Page 22: ...SCH 8 SCH 8 SCH 1 B P851A P851B NAETC 8351 NAVD 8344 NADG 8338 NAETC 8340 NAETC 8341 NADIS 8346 NASW 8345 NASW 8347 P4402B P4402A MAIN CIRCUIT PC BOARD HEADPHONE TERMINAL PC BOARD FRONT SPEAKER TERMIN...

Page 23: ...A 1 2 3 4 5 B C D E F G H 1 1 TX L55 LR552...

Page 24: ...000000 A 1 2 3 4 5 B C D E F G H TX L55 LR552 TX L55 LR552 2 2...

Page 25: ...A 1 2 3 4 5 B C D E F G H TX L55 LR552 PRINTED CIRCUIT BOARD VIEW from Component side NAPS 8342...

Page 26: ...TX L55 LR552 PC BOARD VIEW NAAF 8350 A 1 2 3 4 5 B C D E F G H...

Page 27: ...TX L55 LR552 PC BOARD VIEW NAAF 8350 A 1 2 3 4 5 B C D E F G H...

Page 28: ...41 INDSPSR 42 INDSPSL 43 INDSPCB 44 INDSPSW 45 NC 46 AGND6 47 NC 48 GOUTSW 49 VINSW 50 AGND7 VINFR 80 GOUTFL 79 VINFL 78 AGND11 77 TNF1 76 TNF2 75 BNFA1 74 BNFB1 73 BNFA2 72 BNFB2 71 OUTFR 70 NC 69 O...

Page 29: ...SL VINSL GOUTSR VINSR GOUTC VINC AGND8 NC OUTSW AGND9 OUTCB OUTSL OUTSR OUTC AGND10 OUTFL NC OUTFR BNFB2 BNFA2 BNFB1 BNFA1 TNF2 TNF1 AGND11 VINFL GOUTFL VINFR GOUTFR THGND MUTE CL DA AGND12 CBch input...

Page 30: ...Reference clock 4 7 8 3 16 1 2 5 6 12 11 13 14 10 9 Pin No 1 6 7 8 2 9 10 3 4 11 12 13 14 15 16 5 Pin name QUAL VSS1 RDATA T2 T1 Vref MUX CMP VSS2 VDD2 XI XO N C RCLK VDD1 VSS3 Description Output ter...

Page 31: ...SDATAN0 GPIO24 SDATAN1 GPIO25 SDATAN2 GPIO26 SDATAN3 GPIO27 SCS SCCLK SCDIN SCDOUT SCDIO INTREQ HDATA7 GPIO7 HDATA6 GPIO6 HDATA5 GPIO5 HDATA4 GPIO4 HDATA3 GPIO3 HDATA2 GPIO2 HDATA1 GPIO1 HDATA0 GPIO0...

Page 32: ...rpose I O AUDATA5 GPIO29 Digital Audio Output 5 General Purpose I O AUDATA6 GPIO30 Digital Audio Output 6 General Purpose I O AUDATA7 XMT958B GPIO3 Digital Audio Output 7 S PDIF Transmitter General Pu...

Page 33: ...A7106MFP 75 ohm video driver MM1093NF 4fsc clock generator 4fsc VCO DIVIDER 1 4 SYNC SEP BGP GEN APC2 1st BPA 2nd BPA fsc VCXO ACC DET 9 10 11 12 13 14 15 16 OSCILLATOR R Vcc1 Vcc2 OSCILLATOR C APC2 F...

Page 34: ...E Y DECODER ARRAY SOURCE HV COMMAND DATA DECODER COMMAND DATA LATCH I O BUFFER PGM DATA HV PROGRAM DATA LATCH SENSE AMPLIFIER Q0 Q7 A0 A18 CE OE WE A11 A9 A8 A13 A14 A17 WE VCC A18 A16 A15 A12 A7 A6 A...

Page 35: ...T KILLER TEST12 VDD3 Vss3 VDD2 TEST13 Pin Symbol Function Pin Symbol Function 1 BIAS Bias for ADC 15 SCL Clock input of I2C Bus 2 VRT Maximum bias of D range for ADC 16 SDA Data input output of I2C Bu...

Page 36: ...C TOF SW P N ID CW MATRIX TINT DEMO CHROMA BLK V SEP SYNC SEP APC BPF LPF fsc TRAP SYSTEM fsc 1H DL CONTROL SECAM CONTROL CbCr UV SW 2 Y DL SW DAC1 Y IN DAC Vcc C Vcc UV CbCr SW fsc OUT 1HDL CONT SECA...

Page 37: ...e or a fault 9 12 Y1 Y2 Non inverted switching modulator outputs 10 11 Y1B Y2B Inverted switching modulator outputs 13 NC No connect 14 16 OCD2 OCD1 Over Current Detect pins 15 REF Internal bandgap re...

Page 38: ...Y2B Y1B Inverted switching modulator inputs 27 57 VBOOT2 VBOOT1 Bootstrapped voltage to supply drive to gate of high side FET Channel 2 1 30 31 OCS2LP OCS2LN Over Current Sense inputs Channel 2 low s...

Page 39: ...Inverter TC74HCT7007A Hex Buffer 1A 1Y 2A 2Y 3A 3Y GND 1 2 3 4 5 6 7 14 13 12 11 10 9 8 Vcc 6A 6Y 5A 5Y 4A 4Y TOP VIEW A L H Y L H Truth table G1 A1 A2 A3 A4 A5 A6 A7 A8 GND 1 2 3 4 5 6 7 8 9 10 20 19...

Page 40: ...0 ANO0 6 P131 ANO1 7 AVREF1 8 P70 SO2 RXD2 9 P71 SO2 TXD2 10 P72 SCK2 ASCK2 11 P20 SI1 RXD1 12 P21 SO1 TXD1 13 P22 SCK1 ADCK1 14 P23 PCL 15 P24 BUZ 16 P25 SI0 17 P26 SO0 18 P27 SCK0 19 P40 AD0 20 P41...

Page 41: ...V Negative power supply Description No Symbol Description Positive power supply 5V Ground pin Oscillator connection pin Oscillator connection pin Not used System reset pin Transfer clock input pin fro...

Page 42: ...ion input pin 18 P27 SCK0 I2CCLK FPCLK O CLK Control I2C bus clock and Flash Serial Clock output pin 58 P126 RTP6 SYSIN I H System code input pin 19 P40 AD0 MCRST O L Reset output pin to sub microproc...

Page 43: ...est 1 to 4 when the unit is turned on hold down LISTENING button and then press STANDBY ON button 2 After Test lights on FL tube press INPUT UP to set test 1 00 CR OSCILLATOR DIFFEREN TIATING CIRCUIT...

Page 44: ...2 Left 1 2 3 Speaker Cable 61 Put a label 61 between page 2 and page 3 of instruction manual E Front Left Front Left SP B Zone 2 Left SP B Zone 2 Left Surround Right Surround Right Surround Back Righ...

Page 45: ...B 8B UN Self tapping screw 29 29363767 Label cover 31 27123277A Rear panel 32 838430088 3TTB 8B BC Self tapping screw 35 27212670 Front panel S 27212710 Front panel T 37 838430088 3TTB 8B BC Self tapp...

Page 46: ...1 Carton box S 29054281 Carton box T 57 29363766 Label UPC S 29363994 Label UPC T 61 29363059A Label speaker cable 64 232201 NMA 3064 AM loop antenna 65 292191 FM antenna 67 24140577 RC 577S Remote co...

Page 47: ...2740077R2TO TC74HCT7007AF Q7004 22241778R2 BA33C25FP Q7008 222W0016R3 MPD78F4225GC Q7501 22242039R3 CS494003CQZ Q7502 22242119R3 MX29LV040 Q7503 22240935R2 TC7WU04FU Q7800 22242118R3 AK4588VQ Q9602 Q9...

Page 48: ...M SC or 394680337 CE04W50V 3 3M VR Elect C1104 C1106 342101014R1 CC725CH1H 101J1 Ceramic C1181 394780227 or CE04W50V2 2M SC or 394680227 CE04W50V 2 2M VR Elect P C1182 332101035R1 CK725B1H 103K1 Ceram...

Page 49: ...C2187 C2189 332161040R1 CK725F1E 104Z1 Ceramic D C2194 C2196 394724717 or CE04W6 3V470M SC or 394624717 CE04W6 3V 470M VR Elect D C4300 C4301 374721015 ECQ B50V 101K Plastic D C4300 C4301 374724714 E...

Page 50: ...C7514 C7515 332161040R1 CK725F1E 104Z1 Ceramic C7516 C7517 C7518 332161040R1 CK725F1E 104Z1 Ceramic C7519 C7552 C7568 332161040R1 CK725F1E 104Z1 Ceramic C7551 394722217 or CE04W6 3V220M SC or 39462221...

Page 51: ...14R1 RN72K1J 101JE Carbon D R2073 R2177 435032224R1 RN72K1J 222JE Carbon D R2076 435034714R1 RN72K1J 471JE Carbon D R2102 R2103 435031044R1 RN72K1J 104JE Carbon D R2104 R2105 R2106 435037504R1 RN72K1J...

Page 52: ...rbon R7003 435031034R1 RN72K1J 103JE Carbon T A Q 435033334R1 RN72K1J 333JE Carbon P R7003 R7078 435030004R1 RN72K1J 000JE Carbon D R7008 R7009 R7010 435032214R1 RN72K1J 221JE Carbon R7011 R7012 R7013...

Page 53: ...K1J 470JE Carbon R7527 R7528 R7529 435034704R1 RN72K1J 470JE Carbon R7530 R7531 R7532 435034704R1 RN72K1J 470JE Carbon R7533 R7534 R7535 435034704R1 RN72K1J 470JE Carbon R7536 R7537 R7538 435034704R1...

Page 54: ...LG 9P137 P9001B 25055133 NPLG 3P117 P9002B 25055132 NPLG 2P116 P9003B 25055134 NPLG 4P118 P7002 25055704 NPLG 8P660 P9101B 25055625 NPLG 4P587 Heat sinks Q9602B 27160551 RAD 201 Q9609A 27160472 RAD 14...

Page 55: ...0MG06 D Coils L2701 L2702 231237M022R2 or NCH 1471 or L2750 233533K022R2 NCH 1587 022K L9001 231345 NCH 3643 Power transformer T9002 2301539 NPT 1398P P A 2301465 NPT 1398G T Q 2301780 NPT 1506D D Cap...

Page 56: ...2161040R1 CK725F1E 104Z1 Ceramic C9101 394641007 or CE04W16V 10M VR or 394741007 CE04W16V10M SC Elect Resistors R2202 R2203 R2204 435036804R1 RN72K1J 680JE Carbon D R2205 R8750 435038214R1 RN72K1J 821...

Page 57: ...5034714R1 RN72K1J 471JE Carbon D R8901 435031044R1 RN72K1J 104JE Carbon O R8901 R8902 435031044R1 RN72K1J 104JE Carbon O R8903 R8904 435031044R1 RN72K1J 104JE Carbon R8911 R8912 435031044R1 RN72K1J 10...

Page 58: ...2 RN2402 Q5814 2214530R2 RN2402 D Q5851 2216690R2 DTC123JKA Diodes D5301 D5303 D5305 223269R2 or 1SS355 or D5801 D5802 D5803 223234R2 1SS352 D5421 D5422 D5423 223276R2 M1FL20U D5424 D5425 D5426 223276...

Page 59: ...74721544 ECQ V50V 154J Plastic C5601 C5602 374721024 ECQ B50V 102J Plastic D C5603 C5604 374721024 ECQ B50V 102J Plastic C5605 C5606 374721024 ECQ B50V 102J Plastic C5607 C5608 374721024 ECQ B50V 102J...

Page 60: ...RS1 2WBJ 15 Metal oxide R5414 R5415 R5416 443521504 RS1 2WBJ 15 Metal oxide R5521 R5522 R5523 4000231R2 PMR100HZPFU10L0 R5524 R5525 R5526 4000231R2 PMR100HZPFU10L0 R5531 R5532 R5533 4000231R2 PMR100HZ...

Page 61: ...UL NSAS 18P1421 Plugs P4401 25055158 NPLG 14P142 P9501B 25055166 NPLG 3P150 P9502B 25055132 NPLG 2P116 Isolated sheets Q5401B Q5402B Q5403B 223037 M80 D 2 Q5404B Q5405B Q5406B 223037 M80 D 2 Q5411B Q5...

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