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Onkyo TX-8222 Service Manual
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Onkyo TX-8222 Service Manual

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Download this manual See also: Instruction Manual
SERVICE MANUAL
SERVICE MANUAL
STEREO RECEIVER
MODEL
Black and Silver models
BMDD,BMDC
BMPP,SMPP,BMPA
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-8222
120V AC, 60Hz
230-240V AC, 50Hz
ON THE
TX-8222
Ref. No. 3945
062006
RC-666S

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Summary of Contents for Onkyo TX-8222

  • 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-8222 SPECIFICATIONS Amplifier Section General Rated Output Power (FTC) (North American) Power Supply North American: AC 120 V, 60 Hz All channels: 50 watts minimum continuous power European: AC 230-240 V, 50 Hz per channel, 8 ohm loads, 2 channels...
  • Page 3 In the unlikely event that this happens, unplug the power cord from the wall outlet, wait at least Þve seconds, and then plug it back in again. To reset the TX-8222 to its f actor y defaults, turn it on and, while holding down the VIDEO button, press the ST ANDBY/ON button.
  • Page 4 TX-8222 EXPLODED VIEW A003 P704 P901 x 2 pcs. A003 A301 A302 x 21 pcs. A300 A023 A003 P501B x 2 pcs. A220 Q522 Q524 x 2 pcs. A003 A201 U013 U014 D911 A607 Q523 Q521 A018 U026 x 5 pcs.

  • Page 5: Block Diagram

    TX-8222 BLOCK DIAGRAM VOLUME Q301 ANALOG BALANCE PHONO SWITCH R641 R393 EQUALIZER Q302 Q401 PHONO PHONO R415 R409 Q491 REC1 Q402 MUTING TAPE-1 PLAY1 PLAY Q481 LINE1 TREBLE BASS MOTOR DRIVE LINE2 TUNER TUNL VOLTAG REC2 +12V TAPE-2 PLAY PLAY2...
  • Page 6 TX-8222 BLOCK DIAGRAM POWER AMP SPEAKERS SP-A RELAY RL591 POWER AMP SPEAKER-A TO POWER AMP SP-B RELAY P501 RL592 RELAY SPEAKER-B Q591 Q581/582 DRIVE RELAY Q525/6 PHONES DRIVE PROTECT Q592 P503 VOLTAGE REGULATOR Q921 Q6380 D915~8 +12V THERMAL SENSOR -12V...
  • Page 7 TX-8222 SCHEMATIC DIAGRAM 1 AUDIO SECTION NAAF-8886 Q301:B C305 C303 152J NJM4558D-X PHONO 47/25 C313 EQUALIZER C309 C311 10/50 682J R305 182J R301 R309 220K 470K R311 R303 C307 100/10 C301 R313 C345 471K R307 100K 223Z R308 R314 C302...
  • Page 8 TX-8222 SCHEMATIC DIAGRAM 1 AUDIO SECTION R593 NAAF-8886 (1/2W) SPEAKERS C582 Q583 R573 223Z P501 2SA970 2SA949Y See Extended Q507 R521 [57.6V] R517 R519 R523 figure 1-2 J102 (1/2W) (1/2W) Q517 Q531 R591 2SC5171 [56.3V] Q527 2SC1740S_S [1.2V] (1/4W) Q521...
  • Page 9 TX-8222 SCHEMATIC DIAGRAM 1-2 Power amplifier section 2SA949Y Q507 R521 [57.6V] R517 R519 R523 (1/2W) (1/2W) R591 Q517 [56.3V] Q531 Q527 2SC5171 (1/4W) [1.2V] 2SC1740S_S Q521 2SC2229-Y R551 R565 R577 2SC5197 R581 120K 120K Q513 5.6K 2SA949Y C523 [0.6V] R579...
  • Page 10 TX-8222 SCHEMATIC DIAGRAM 2 DISPLAY SECTION NADIS-8877 U012 Q852 16-BT-128GNYK C868 223Z C870 C869 223Z 223Z R885 C867 R886 223Z C865 33/50 R884 100K SEG2 SEG1 SEG19 SEG20 SEG0 SEG21 VCC2 SEG22 DIG15/SEG39 SEG23 Q851 DIG14/SEG38 SEG24 DIG13/SEG37 SEG25 M66005-...
  • Page 11 TX-8222 SCHEMATIC DIAGRAM 2 DISPLAY SECTION U012 NADIS-8877 C868 223Z C870 C869 223Z 223Z R885 C867 R886 223Z C865 33/50 L852 022K +5VDIS MPUGND SEG19 SEG20 SEG21 +5VCPU SEG22 SEG23 MPUGND SEG24 REMIN SEG25 KEY0 SEG26 KEY1 KEY2 SEG27 KEY3...
  • Page 12 TX-8222 SCHEMATIC DIAGRAM 3 MICROPROCESSOR SECTION NADG-8876 C716 101J R850 D703 1SS355 D702 C717 +5VCPU 3.3/50 (VX) RDSSIG 1SS355 RDSDAT D713 +5VTU C718 100/16 Q701 (VR) J701/J702:(P/A) D701 S-812C56 L701 R722 J701 1SS355 AUA-C3K 470M +5VMPU R721 J702 +9V_TU R674 10K...
  • Page 13 TX-8222 SCHEMATIC DIAGRAM 3 MICROPROCESSOR SECTION NADG-8876 Q705 R719 RN2402 R720 4.7K R705 Q603 AMUT C609 104Z RN2402 R714 2.2K C610 104Z Q703 RN1404 C611 104Z C612 104Z R720* SYSIN R674 10K R673 10K R653 R652 TU_R C606 TU-GND 104Z...
  • Page 14 TX-8222 SCHEMATIC DIAGRAM 4 POWER SUPPLY SECTION CAUTION POWER TRANSFORMER T901 FOR CONTINUED PROTECTION U016 AGAINST FIRE HAZARD, REPLACE NPT-1544D(D) ONLY WITH FUSE OF SAME TYPE NAPS-8880 AND RATING INDICATED. NPT-1544P(P/A) 5A-UL/T-233(D) F903 2.5A-SE-EAK(P/A) U015 ATTENTION F901 AFIN D'ASSURER UNE PROTECTION...
  • Page 15 TX-8222 WIRING VIEW AC IN PRIMARY CIRCUIT PC BOARD (NAPS-8880) P501 P303 P910 SCH.4 P512 P912A U015 P911A P901A JL261B P913A T902 JL911A R588 SCH.1 FUSE TERMINAL PC BOARD (NAPS-8889) P914B P915B U024 JL918B P911B P913B P912B U016 SCH.4 TRANSFORMER TERMINAL...
  • Page 16 TX-8222 WIRING VIEW P302 P301 P707 P706 FM/AM TUNER PACK P704A P212B P211B L261B P705A P702B MAIN CIRCUIT SCH.3 JL911B P702A PC BOARD JL703A (NAAF-8886) SCH.1 JL703B P701B SCH.3 P701A U013 MICROPROCESSOR PC BOARD THERMAL (NADG-8876) DETECTOR SCH.1 PC BOARD...
  • Page 17 TX-8222 PRINTED CIRCUIT BOARD VIEW 1 Reversal letter: :Soldering side parts COMPONENT SIDE SOLDERING SIDE MICROPROCESSOR PC BOARD (NADG-8876)
  • Page 18 TX-8222 PRINTED CIRCUIT BOARD VIEW 1 COMPONENT SIDE Reversal letter: :Soldering side parts SOLDERING SIDE U015 PRIMARY CIRCUIT PC BOARD (NAPS-8880)
  • Page 19 TX-8222 PRINTED CIRCUIT BOARD VIEW 2 Reversal letter: :Soldering side parts COMPONENT SIDE U012 DISPLAY CIRCUIT PC BOARD (NADIS-8877)
  • Page 20 TX-8222 PRINTED CIRCUIT BOARD VIEW 2 COMPONENT SIDE Reversal letter: :Soldering side parts SOLDERING SIDE U012 DISPLAY CIRCUIT PC BOARD (NADIS-8877)
  • Page 21 TX-8222 PRINTED CIRCUIT BOARD VIEW 3 MAIN CIRCUIT PC BOARD (NAAF-8886)
  • Page 22 TX-8222 PRINTED CIRCUIT BOARD VIEW 3 MAIN CIRCUIT PC BOARD (NAAF-8886)
  • Page 23 TX-8222 PRINTED CIRCUIT BOARD VIEW 4 TRANSFORMER TERMINAL U022 PC BOARD (NAPS-8887) VOLUME PC BOARD U023 U016 TRANSFORMER TERMINAL (NAAF-8888) PC BOARD (NAETC-8881) Reversal letter: :Soldering side parts COMPONENT SIDE SOLDERING SIDE U017 HEADPHONE TERMINAL PC BOARD (NAETC-8882)

  • Page 24: Seg32

    TX-8222 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) SDATA SEG01 write DIG16/SEG40 DIG13/SEG37 INDICATOR CONTROL RESET...
  • Page 25 TX-8222 IC BLOCK DIAGRAMS AND DESCRIPTIONS TA7291S(Volume motor driver) Vref INPUT OUTPUT MODE OUT1 OUT2 STOP CW/CCW CCW/CW BRAKE REGU- OUT1 CCW: Counter-clockwise LATOR CW: Clockwise OUT2 PROTECTOR TC9273CNG(Analog Switch Array) Pin No. Symbol Description (R-ch) Negative power supply pin...
  • Page 26 TX-8222 MICROPROCESSOR-CONNECTION DIAGRAM OPERATION Q851 Segment FL TUBE Q852 DRIVER Digit FL TUBE M66005 D853 STANDBY IND. U851 REMOTE CONTROL SENSOR IR IN IR OUR VSWA P96/ANEX1/SOUT P10/D8 VSWB P95/ANEX0/CLK4 P11/D9 P94/DA1/TB4IN P12/D10 RI IN/OUT P93/DA0/TB3IN P13/D11 ~STEREO P92/TB2IN/SOUT3 P14/D12...
  • Page 27 TX-8222 MICROPROCESSOR-TERMINAL DESCRIPTION 1 No. Terminal Signal Name Act. Description P96/ANEX1/SOUT4 VSWA Not used. P95/ANEX0/CLK4 VSWB Not used. P94/DA1/TB4IN Not used. P93/DA0/TB3IN Z2SELCLK Not used. P92/TB2IN/SOUT3 Z2SELDAT Not used. P91/TB1IN/SIN3 Z2SELLAT Not used. P90/TB0IN/CLK3 Not used. BYTE BYTE External bus select pin. Connect to Ground.
  • Page 28 TX-8222 MICROPROCESSOR-TERMINAL DESCRIPTION 2 No. Terminal Signal Name Act. Description P31/A09 Not used. VCC2 Vcc2 Power supply pin. P30/A8(/-/D7) SEC1H Not used. Ground pin. P27/AN27/A7(/D7/D6) PROTECT Abnormal voltage and current detection input pin P26/AN26/A6(/D6/D5) VOLH A/D Output signal level detection pin...
  • Page 29 TX-8222 ADJUSTMENT AND CONFIRMATION PROCEDURES 1 Idling current adjustment Before Idling adjustment, turn the trimming resistors R587 and R588 to counter clockwise. Connect the DC voltmeter to terminals P511 and P512. After turn POWER to ON, adjust the trimming resistors R587 and R588 so that the reading of voltmeter becomes 2.5 mV.
  • Page 30 TX-8222 ADJUSTMENT AND CONFIRMATION PROCEDURES 2 3. Confirmation of Current detection circuit Set the unit to "TEST-1-00". Connect the differentiating circuit and apply the 50Hz square signal to CD terminal of each channel. Adjust the attenuator or Volume so that the output level becomes 30V p-p.
  • Page 31 TX-8222 PACKING VIEW A804 P501A A803 A604 A802 A820 A611 A603 P501C A836 A610 A835 A821 A609 A822 A823 A609 A602 A601 A605 A606...

  • Page 32: Nadis

    TX-8222 EXPLODED VIEW-PARTS LIST NOTE: <B>: Black model NOTE: THE COMPONENTS IDENTIFIED BY MARK ! <S>: Silver model ARE CRITICAL FOR RISK OF FIRE AND <D>: USA model ELECTRIC SHOCK. REPLACE ONLY WITH <P>: European model PART NUMBER SPECIFIED. <A>: Australian model CAUTION: Replacement for transistor of mark *, if necessary <C>: Canadian model...
  • Page 33 TX-8222 F903 FUSE 2.5A-SE-EAK or 252075GR or ! <P/A> FUSE 2.5A-SE-TL250V 252275GR ! <P/A> P501B P RIVET JB-407A-C 880052 <P/A> P704 NCFC7-131012 2047131012 P715 2047242012 NCFC7-242012 AC CORD AS-UC-2 or 253368LTK or ! <D/C> AC CORD 253368YUN or AS-UC-2 or ! <D/C>...

  • Page 34: L852

    TX-8222 Q851 M66005-0001AHP 22242208R3 Q855 LM61CIZ 22242212 Q602,Q703 RN1404 2214490R2 Q603,Q705 RN2402 2214530R2 Q853 2SC2712-GR 2213145R2 Q912 KTC3199-GR 2215864 D601,D602 C-DIODE 1SS352 or 223234R2 or D603 C-DIODE 1SS355 223269R2 D604 ZENER D UDZS5.1B 224550510R2 D701,D702,D703 C-DIODE 1SS352 or 223234R2 or...
  • Page 35 TX-8222 C912 IS C RE275V-103M 3500196 R601,R602 C-CARBON R RN72K1J-221JE 435032214R1 R608 C-CARBON R RN72K1J-221JE 435032214R1 <P> R609,R610,R614 C-CARBON R RN72K1J-103JE 435031034R1 R612,R615,R616 C-CARBON R RN72K1J-473JE 435034734R1 R613 C-CARBON R RN72K1J-105JE 435031054R1 R618,R619,R620 C-CARBON R RN72K1J-221JE 435032214R1 R621,R622,R624 C-CARBON R...

  • Page 36: R887

    TX-8222 R870,R877 C-CARBON R RN72K1J-471JE 435034714R1 R871,R878 C-CARBON R RN72K1J-561JE 435035614R1 R874,R891 C-CARBON R RN72K1J-222JE 435032224R1 R875,R892 C-CARBON R RN72K1J-392JE 435033924R1 R879,R880 C-CARBON R RN72K1J-332JE 435033324R1 R881,R882 C-CARBON R RN72K1J-221JE 435032214R1 R883 C-CARBON R RN72K1J-273JE 435032734R1 R884 C-CARBON R RN72K1J-104JE...
  • Page 37 TX-8222 Q921 NJM78M12FA or 222780125JRC or MPC78M12HF 222780125NEC Q922 79M12HF 222790125 RN1241-A(TPE4_F) or 2213631 or Q491,Q492 RN1241-B 2213632 KRA102M or 2215770 or Q493 DTA114ES 2213510 Q501,Q502 2SC2240-BL(TPE2_F) 2211406 Q503,Q504 2SC2240-BL(TPE2_F) 2211406 2SC2240-BL(TPE2_F) or 2211406 or Q505,Q506 2SC2240-GR 2211405 Q507,Q508,Q509 2SA949-Y(TPE6_F) or...
  • Page 38 TX-8222 C391,C392 TF C ECQ-B50V-101K 374721015 C401,C402,C403 VX C CE04W25V-47M(VX) 393354707 C404,C407,C408 VX C CE04W25V-47M(VX) 393354707 C405,C406 TF C ECQ-B50V-101K 374721015 C409,C410 TF C ECQ-B50V-101K 374721015 <P/A> C411,C412 VX C CE04W25V-47M(VX) 393354707 C415,C416 VR C CE04W16V-220M(VR) 394642217 C421,C422 TF C...
  • Page 39 TX-8222 R349,R350 CARBON R R16J-22K 417342234 R351,R352,R353 NF CARBON R R25J-10 415471004 R354,R441,R442 NF CARBON R R25J-10 415471004 R391,R392 CARBON R R16J-1K 417341024 R393 VARI R N11RLC250KWT20Z 5104288 R401,R402 CARBON R R16J-1K 417341024 R403,R404,R435 CARBON R R16J-220K 417342244 R405,R406 CARBON R...
  • Page 40 TX-8222 R924 METAL O R RS1/2WBJ-560 443525614 R931 NF CARBON R R25J-3.3K 415473324 R932 CARBON R R16J-330K 417343344 R933 METAL O R RS1/2WBJ-22 443522204 R934 METAL O R RS1/2WBJ-100 443521014 R951,R952 METAL R RNU1/2WCJ-2.2 453530224 R953 CARBON R R16J-100K 417341044...
  • Page 41 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...