Onkyo TX-8255 Service Manual Download Page 62

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PCB2

R566 CARBON

R16J-120K

417341244T

PCB2

R567 CARBON

R16J-22

417342204T

PCB2

R568 CARBON

R16J-22

417342204T

PCB2

R569 CARBON

R16J-22

417342204T

PCB2

R570 CARBON

R16J-22

417342204T

PCB2

R571 CARBON

R16J-33K

417343334T

PCB2

R572 CARBON

R16J-22K

417342234T

PCB2

R573 CARBON

R16J-10K

417341034T

PCB2

R574 CARBON

R16J-47K

417344734T

PCB2

R575 CARBON

R16J-220K

417342244T

PCB2

R577 CARBON

R16J-120K

417341244T

PCB2

R578 CARBON

R16J-120K

417341244T

PCB2

R579 CARBON

R16J-100

417341014T

PCB2

R580 CARBON

R16J-100

417341014T

PCB2

R581 CARBON

R16J-5.6K

417345624T

PCB2

R582 CARBON

R16J-5.6K

417345624T

PCB2

R583 CARBON

R16J-3.9K

417343924T

PCB2

R584 CARBON

R16J-3.9K

417343924T

PCB2

R585 CARBON

R16J-820

417348214T

PCB2

R586 CARBON

R16J-820

417348214T

PCB2

R587 TRIM

N06HR2KBC

5210390T

PCB2

R588 TRIM

N06HR2KBC

5210390T

PCB2

R589 CARBON

R16J-3.3K

417343324T

PCB2

R590 CARBON

R16J-3.3K

417343324T

PCB2

R591

NF CARBON R

R25J-2.2

415470224T

PCB2

R592

NF CARBON R

R25J-2.2

415470224T

PCB2

R593 METAL

RNU1/2WCJ-2.2

453530224T

PCB2

R594 METAL

RNU1/2WCJ-2.2

453530224T

PCB2

R595

METAL O R

RS1/2WBJ-10

443521004T

PCB2

R598

METAL O R

RS1WBJ-390

443623914T

PCB2

R599

METAL O R

RS1WBJ-390

443623914T

PCB2

R641 VARI

N16RGL100KBT25F

5104334

PCB2

R643 CARBON

R16J-8.2K

417348224T

Summary of Contents for TX-8255

Page 1: ...NG 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...

Page 2: ...2008 05 09 Model TX 8255 Ref No 4088 Component Printed service manual is not prepared Title Approve Date Attached file Cover 2008 05 29 Specifications Panel view Remote controller Refer to instructio...

Page 3: ...Ref No 3945 FL tube Microprocessor terminal descriptions Refer to service manual of TX 8222 Ref No 3945 Service procedure 2008 08 04 Operation check 2008 09 02 2 Pages p 1 DC voltafe detection Thermal...

Page 4: ...x 8 pcs A025 x 3 pcs A025 x 3 pcs A031 x 5 pcs A035 x 2 pcs A035 x 2 pcs A203 x 6 pcs A521a x 4 pcs A023 x 3 pcs A009 x 4 pcs A011 x 4 pcs A213 x 3 pcs A039 A212 A204 A013 A216 A211 A201 P715 P704 P90...

Page 5: ...IO IN OUT MOTOR DRIVE Q481 DISPLAY CONTROL MAIN MICROPROCESSOR Q601 FL DRIVER Q851 FL DISPLAY Q852 FM AM RDS TUNER UNIT CONTROL KEYS TO SELECTOR PHONO EQ Q302 PHONO CD REC1 SELECTOR 240V Q591 RELAY DR...

Page 6: ...IO IN OUT MOTOR DRIVE Q481 DISPLAY CONTROL MAIN MICROPROCESSOR Q601 FL DRIVER Q851 FL DISPLAY Q852 FM AM RDS TUNER UNIT CONTROL KEYS TO SELECTOR PHONO EQ Q302 PHONO CD REC1 SELECTOR 240V Q591 RELAY DR...

Page 7: ...N OUT MOTOR DRIVE Q481 DISPLAY CONTROL MAIN MICROPROCESSOR Q601 FL DRIVER Q851 FL DISPLAY Q852 FM AM RDS TUNER UNIT CONTROL KEYS TO SELECTOR PHONO EQ Q302 PHONO CD REC1 SELECTOR 240V Q591 RELAY DRIVE...

Page 8: ...2 3 4 5 6 7 8 9 RL591 4 3 6 1 2 5 R931 3 3K 1 4W R933 22 1 2W R904 NC R905 NC R901 NC R900 NC Q922 79M12 3 O 2 I 1 G C923 10 50 C922 33 50 C921 223Z C920 223Z J901 C926 100 50 J595 NC J903 P702B 1 2 3...

Page 9: ...2 3 4 5 6 7 8 9 RL591 4 3 6 1 2 5 R931 3 3K 1 4W R933 22 1 2W R904 NC R905 NC R901 NC R900 NC Q922 79M12 3 O 2 I 1 G C923 10 50 C922 33 50 C921 223Z C920 223Z J901 C926 100 50 J595 NC J903 P702B 1 2 3...

Page 10: ...4 5 6 7 8 9 RL591 4 3 6 1 2 5 R931 3 3K 1 4W R933 22 1 2W R904 NC R905 NC R901 NC R900 NC Q922 79M12 3 O 2 I 1 G C923 10 50 C922 33 50 C921 223Z C920 223Z J901 C926 100 50 J595 NC J903 P702B 1 2 3 4 5...

Page 11: ...22 47K R721 47K C714 10 50 R712 1 2W 0 22 Q710 2SA1930 2 C606 104Z D603 1SS355 X601 6 000MHz C716 101J C708 474K R701 1K R667 47K R666 220 C603 104Z C602 104Z D708 J702 J701 C720 NC C718 100 16 C717 3...

Page 12: ...22 47K R721 47K C714 10 50 R712 1 2W 0 22 Q710 2SA1930 2 C606 104Z D603 1SS355 X601 6 000MHz C716 101J C708 474K R701 1K R667 47K R666 220 C603 104Z C602 104Z D708 J702 J701 C720 NC C718 100 16 C717 3...

Page 13: ...7K R721 47K C714 10 50 R712 1 2W 0 22 Q710 2SA1930 2 C606 104Z D603 1SS355 X601 6 000MHz C716 101J C708 474K R701 1K R667 47K R666 220 C603 104Z C602 104Z D708 J702 J701 C720 NC C718 100 16 C717 3 3 5...

Page 14: ...55 DIG13 SEG37 56 DIG12 SEG36 57 DIG11 58 DIG10 59 DIG9 60 DIG8 61 DIG7 62 DIG6 63 DIG5 64 64 DIG4 1 DIG03 2 DIG02 3 DIG01 4 DIG00 5 _RESET 6 _CS 7 SCK 8 SDATA 9 P1 10 P0 11 VCC1 12 XOUT 13 XIN 14 VS...

Page 15: ...C1815 GR UNLESS OTHERWISE NOTED ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED ELECTROLYTIC CAPACITORS ARE IN uF WV ALL CAPACITORS ARE IN pF 50WV UNLESS OTHERWISE NOTED EX 030 3pF 330 33pF...

Page 16: ...R TX 8255 A824 A823 A822 A801 A802 A803 A804 Front side Front side Front side marking Right side marking Front side marking A605 A821 A603 A604 A605 A605 A602 A606 A702 A702 A606 A701 A605 A601 L R L...

Page 17: ...TX 8222 PRINTED CIRCUIT BOARD VIEW 1 U01 MICROPROCESSOR PC BOARD NADG 8876 COMPONENT SIDE SOLDERING SIDE A 1 2 3 4 5 B C D Reversal letter D 9 0 1 Soldering side parts...

Page 18: ...TX 8222 PRINTED CIRCUIT BOARD VIEW 1 U015 PRIMARY CIRCUIT PC BOARD NAPS 8880 COMPONENT SIDE SOLDERING SIDE A 1 2 3 4 5 B C D Reversal letter D 9 0 1 Soldering side parts...

Page 19: ...TX 8222 PRINTED CIRCUIT BOARD VIEW 2 U012 DISPLAY CIRCUIT PC BOARD NADIS 8877 COMPONENT SIDE Reversal letter D 9 0 1 Soldering side parts A 1 2 3 4 5 B C D...

Page 20: ...TX 8222 PRINTED CIRCUIT BOARD VIEW 2 U012 DISPLAY CIRCUIT PC BOARD NADIS 8877 SOLDERING SIDE COMPONENT SIDE A 1 2 3 4 5 B C D Reversal letter D 9 0 1 Soldering side parts...

Page 21: ...TX 8222 PRINTED CIRCUIT BOARD VIEW 3 U02 MAIN CIRCUIT PC BOARD NAAF 8886 A 1 2 3 4 5 B C D...

Page 22: ...TX 8222 PRINTED CIRCUIT BOARD VIEW 3 U02 MAIN CIRCUIT PC BOARD NAAF 8886 A 1 2 3 4 5 B C D...

Page 23: ...ONE TERMINAL PC BOARD NAETC 8882 COMPONENT SIDE SOLDERING SIDE U022 TRANSFORMER TERMINAL PC BOARD NAPS 8887 U023 VOLUME PC BOARD NAAF 8888 U016 TRANSFORMER TERMINAL PC BOARD NAETC 8881 A 1 2 3 4 5 B C...

Page 24: ...OPROCESSOR PC BOARD NADG 8876 U015 PRIMARY CIRCUIT PC BOARD NAPS 8880 COMPONENT SIDE COMPONENT SIDE SOLDERING SIDE SOLDERING SIDE A 1 2 3 4 5 B C D E F G H Reversal letter C 7 1 9 Soldering side parts...

Page 25: ...TX 8222 PRINTED CIRCUIT BOARD VIEW 2 U012 DISPLAY CIRCUIT PC BOARD NADIS 8877 COMPONENT SIDE SOLDERING SIDE A 1 2 3 4 5 B C D E F G H Reversal letter R 8 9 1 Soldering side parts...

Page 26: ...TX 8222 PRINTED CIRCUIT BOARD VIEW 3 U02 MAIN CIRCUIT PC BOARD NAAF 8886 A 1 2 3 4 5 B C D E F G H...

Page 27: ...D CONTROL CIRCUIT INDICATOR CONTROL REGISTER CLOCK GENERATOR CIRCUIT DISPLAY CONTROLLER RAM write code selector CGROM 35 bits 160 CGRAM 35 bits 16 SEGMENT OUTPUT CIRCUIT DIGIT OUTPUT CIRCUIT SEG36 SEG...

Page 28: ...SHIFTER SHIFT REGISTER CIRCUIT R ch 10bit Latch Circuit Same as L ch Circuit L ch 10bit Latch Circuit 2 3 4 5 6 7 8 9 10 11 12 27 26 25 24 23 22 21 20 19 18 17 13 14 15 16 1 28 TC9273CNG Analog Switch...

Page 29: ...4 3 4 4 4 5 4 1 5 2 5 3 5 4 5 5 5 1 6 2 6 3 6 4 6 5 6 1 7 2 7 3 7 4 7 5 7 P1 P2 P3 P4 P5 P6 P7 P8 P9 P10 P11 P12 P13 P14 P15 P16 P17 P18 1 1 2 1 3 1 4 1 5 1 1 2 2 2 3 2 4 2 5 2 1 3 2 3 3 3 4 3 5 3 1...

Page 30: ...O L Reset control output pin for Sirius 27 P73 CTS2 RTS2 TA1IN V TUXMSELA O H Not used 28 P72 CLK2 TA1OUT V TUXMSELB O H Not used 29 P71 RXD2 SCL2 TA0IN TB5IN SIRIUSRX I H Not used 30 P70 TXD2 SDA2 TA...

Page 31: ...3 D11 SD I L Broadcast detection input pin 78 P12 D10 I L Not used 79 P11 D9 I L Not used 80 P10 D8 I L Not used 81 P07 AN07 D7 O L Not used 82 P06 AN06 D6 LEDZONE2 O H Not used 83 P05 AN05 D5 LEDPURE...

Page 32: ...n when the unit is powered on 2 After Clear Clear is displayed the preset memory and each mode stored in the memory are initialized and will return to the factory settings 5 To check version of Main m...

Page 33: ...terminal And check speaker relays RL591 and RL592 is immediately Turned off Turned off and power indicator blinks 5 Check Rch according to the same procedure 6 Press ON ON STANDBY STANDBY button 7 Di...

Page 34: ...cillator and this signal is input to the CD via the differentiation circuit 6 Adjust for the output wave form of the SPEAKERS A Lch terminal to become 30 Vp p 30 Vp p by master volume 7 Connect the 2...

Page 35: ...imming resistors fully to counter clockwise 2 Connect the dc voltmeter to test points using two 100 ohm resistors between the poles of the jig terminal and the DC voltmeter terminals 3 Connect the AC...

Page 36: ...PLODED A009 LEG 4 27175419 EXPLODED A010 CUSHION LEG 4 28141660 EXPLODED A011 SCREW 3TTB 8B 3BC 4 838430088GR EXPLODED A013 F BRACKET AS B 1 27111516A B EXPLODED A013 F BRACKET AS S 1 27111517A S EXPL...

Page 37: ...1 28184964AZ B MDC EXPLODED A202 REAR PANEL 82DC 1 27123872 MDC EXPLODED A202 REAR PANEL 82PP 1 27123873 MPP EXPLODED A203 SCREW 3TTB 8B 3BC 6 838430088GR B EXPLODED A203 SCREW 3TTB 8B 3CM SR 6 801637...

Page 38: ...P 1 2301871 MPP EXPLODED P501A P RIVET JB 407A C 8 880052 MPP EXPLODED P704 FFC NCFC7 131012 1 2047131012 EXPLODED P715 FFC NCFC7 242012 1 2047242012 EXPLODED P901 AC CORD AS UC 2 1 253368BLTK MDC EXP...

Page 39: ...RMINAL PC board ass y NCETC 8881 1N 1 NSP MPP EXPLODED U07 HEADPHONE JACK PC board ass y NCETC 8882 1M 1 NSP MDC EXPLODED U07 HEADPHONE JACK PC board ass y NCETC 8882 1N 1 NSP MPP EXPLODED U08 AMPLIFI...

Page 40: ...1 Q851 IC M66005 0001AHP 1 22242208R3 PCB1 Q852 FL TUBE 16 BT 128GNYK 1 212258A PCB1 Q852A HOLDER FL 1 27191222C PCB1 Q853 TR 2SC2712 GR 1 2213145R2 PCB1 Q855 IC LM61CIZ 1 22242212 PCB1 Q855A RETAINER...

Page 41: ...ST3F 1 225456 PCB1 D901 C DIODE 1SS355 1 223269R2 PCB1 D901 or C DIODE 1SS352 1 223234R2 PCB1 D902 C DIODE 1SS355 1 223269R2 PCB1 D902 or C DIODE 1SS352 1 223234R2 PCB1 D903 C DIODE 1SS355 1 223269R2...

Page 42: ...L855 CHOKE COIL NCH 1477 1 231237K220R2 PCB1 L857 CHOKE COIL NCH 1479 1 231237K470R2 PCB1 C601 C CERA C CK725F1H 104Z1 1 332151040R1 PCB1 C602 C CERA C CK725F1H 104Z1 1 332151040R1 PCB1 C603 C CERA C...

Page 43: ...F1H 104Z1 1 332151040R1 PCB1 C712 VR C CE04W16V 100M VR 1 394641017T PCB1 C716 C CERA C CC725CH1H 101J1 1 342101014R1 PCB1 C717 VR C CE04W50V 3 3M VR 1 394680337T PCB1 C718 VR C CE04W16V 100M VR 1 394...

Page 44: ...196S PCB1 C991 C CERA C CK725F1H 104Z1 1 332151040R1 PCB1 R601 C CARBON R RN72K1J 221JE 1 435032214R1 PCB1 R602 C CARBON R RN72K1J 221JE 1 435032214R1 PCB1 R608 C CARBON R RN72K1J 221JE 1 435032214R1...

Page 45: ...N R RN72K1J 000JE 1 435030004R1 PCB1 R644 C CARBON R RN72K1J 470JE 1 435034704R1 PCB1 R645 C CARBON R RN72K1J 470JE 1 435034704R1 PCB1 R646 C CARBON R RN72K1J 000JE 1 435030004R1 PCB1 R647 C CARBON R...

Page 46: ...N R RN72K1J 224JE 1 435032244R1 PCB1 R679 C CARBON R RN72K1J 470JE 1 435034704R1 PCB1 R680 C CARBON R RN72K1J 470JE 1 435034704R1 PCB1 R681 C CARBON R RN72K1J 470JE 1 435034704R1 PCB1 R682 C CARBON R...

Page 47: ...C CARBON R RN72K1J 333JE 1 435033334R1 MPP PCB1 R721 C CARBON R RN72K1J 473JE 1 435034734R1 PCB1 R722 C CARBON R RN72K1J 473JE 1 435034734R1 PCB1 R729 C CARBON R RN72K1J 105JE 1 435031054R1 PCB1 R733...

Page 48: ...N R RN72K1J 471JE 1 435034714R1 PCB1 R871 C CARBON R RN72K1J 561JE 1 435035614R1 PCB1 R872 C CARBON R RN72K1J 821JE 1 435038214R1 PCB1 R873 C CARBON R RN72K1J 122JE 1 435031224R1 PCB1 R874 C CARBON R...

Page 49: ...1 S681 1 25035718T PCB1 S859 PUSH SW NPS 111 S681 1 25035718T PCB1 S860 PUSH SW NPS 111 S681 1 25035718T PCB1 S861 PUSH SW NPS 111 S681 1 25035718T PCB1 S862 PUSH SW NPS 111 S681 1 25035718T PCB1 S863...

Page 50: ...r SOCKET NSCT 24P1820 1 25052033 PCB1 P715B SOCKET NSCT 24P1655 1 25051868 PCB1 P715B or SOCKET NSCT 24P1857 1 25052070 PCB1 P715B or SOCKET NSCT 24P2154 1 25052257 PCB1 P901A PLUG NPLG 2P631 1 250556...

Page 51: ...BOARD NAETC 8891 2M 2N PCB2 PCB2 CIRCUIT NO PART NAME DESCRIPTION Q TY PART NO SN REMARKS PCB2 Q301 IC NJM4558D X 1 222502 PCB2 Q302 IC TC9273CNG 010 1 22242335 PCB2 Q401 IC NJM2068L D 1 22240250 PCB...

Page 52: ...9 O TPE6_F 1 2211353T PCB2 Q515 TR 2SC2229 Y TPE6_F 1 2211634T PCB2 Q515 or TR 2SC2229 O TPE6_F 1 2211633T PCB2 Q516 TR 2SC2229 Y TPE6_F 1 2211634T PCB2 Q516 or TR 2SC2229 O TPE6_F 1 2211633T PCB2 Q51...

Page 53: ...5T PCB2 Q583 or TR KTA1268 BL 1 2215886T PCB2 Q591 TR DTC123JS 1 2213640T PCB2 Q591 or TR KRC105M 1 2215830T PCB2 Q592 TR DTC123JS 1 2213640T PCB2 Q592 or TR KRC105M 1 2215830T PCB2 Q921 IC 78M12HF NJ...

Page 54: ...1SS133 1 223163T PCB2 C301 TF C ECQ B50V 471J 1 374724714T PCB2 C302 TF C ECQ B50V 471J 1 374724714T PCB2 C303 VX C CE04W25V 47M VX_BLK 1 397354707T PCB2 C304 VX C CE04W25V 47M VX_BLK 1 397354707T PCB...

Page 55: ...4 VR C CE04W50V 22M VR 1 394682207T PCB2 C391 TF C ECQ B50V 101K 1 374721015T PCB2 C392 TF C ECQ B50V 101K 1 374721015T PCB2 C401 VX C CE04W25V 47M VX_BLK 1 397354707T PCB2 C402 VX C CE04W25V 47M VX_B...

Page 56: ...81007T PCB2 C513 VX C CE04W25V 47M VX_BLK 1 397354707T PCB2 C514 VX C CE04W25V 47M VX_BLK 1 397354707T PCB2 C515 TF C ECQ B50V 101K 1 374721015T PCB2 C516 TF C ECQ B50V 101K 1 374721015T PCB2 C517 TF...

Page 57: ...CB2 C921 CERA C CK45F50V 223Z 1 335622230T PCB2 C922 VR C CE04W50V 33M VR 1 394683307T PCB2 C923 VX C CE04W50V 10M VX_BLK 1 397381007T PCB2 C924 TF C ECQ V50V 334J 1 374723344T PCB2 C925 TF C ECQ V50V...

Page 58: ...341054T PCB2 R319 CARBON R R16J 2 2K 1 417342224T PCB2 R320 CARBON R R16J 2 2K 1 417342224T PCB2 R321 CARBON R R16J 1M 1 417341054T PCB2 R322 CARBON R R16J 1M 1 417341054T PCB2 R323 CARBON R R16J 330...

Page 59: ...PCB2 R401 CARBON R R16J 1K 1 417341024T PCB2 R402 CARBON R R16J 1K 1 417341024T PCB2 R403 CARBON R R16J 220K 1 417342244T PCB2 R404 CARBON R R16J 220K 1 417342244T PCB2 R405 CARBON R R16J 22K 1 417342...

Page 60: ...RBON R R16J 47 1 417344704T PCB2 R511 CARBON R R16J 5 6K 1 417345624T PCB2 R512 CARBON R R16J 5 6K 1 417345624T PCB2 R513 CARBON R R16J 56K 1 417345634T PCB2 R514 CARBON R R16J 56K 1 417345634T PCB2 R...

Page 61: ...43522214T PCB2 R545 CARBON R R16J 22K 1 417342234T PCB2 R546 CARBON R R16J 22K 1 417342234T PCB2 R547 METAL PR RGC55 0 22 1 4000132 PCB2 R547 or METAL PR MPR5W 5W 0R22 1 4000233 PCB2 R548 METAL PR RGC...

Page 62: ...CARBON R R16J 5 6K 1 417345624T PCB2 R582 CARBON R R16J 5 6K 1 417345624T PCB2 R583 CARBON R R16J 3 9K 1 417343924T PCB2 R584 CARBON R R16J 3 9K 1 417343924T PCB2 R585 CARBON R R16J 820 1 417348214T P...

Page 63: ...RL591 or RELAY NRL 2P5A DC24 129 1 25065563 PCB2 RL591 or RELAY NRL 2P5A DC24 193 1 25065703 PCB2 RL592 RELAY NRL 2P5A DC24 158 1 25065618 PCB2 RL592 or RELAY NRL 2P5A DC24 129 1 25065563 PCB2 RL592 o...

Page 64: ...SCRIPTION Q TY PART NO SN REMARKS PACKING A601 PAD L R 1set 1 29092400 PACKING A602 POLY BAG w850 x d650 1 29100245 PACKING A603 POLY BAG w250 x d350 1 29100250A PACKING A604 POLY BAG w250 x d350 1 29...

Page 65: ...DS A2X US 1 29380150 MDC PACKING A807 HANDBILL DS A2X EU 1 29380151 MPP PACKING A821 REMO CON RC 666S 1 24140666 PACKING A822 BATTERY R6 AA UM 3 2 3010194 PACKING A822 or BATTERY R6 AA UM 3 2 3010054...

Page 66: ...tp www us onkyo com ONKYO EUROPE ELECTRONICS GmbH Liegnitzerstrasse 6 82194 Groebenzell GERMANY Tel 49 8142 4401 0 Fax 49 8142 4401 555 http www eu onkyo com Sales Product Planning Div 2 1 Nisshin cho...

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