Onkyo TX-7430 Service Manual Download Page 1 | Manualshive

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Summary of Contents for TX-7430

Page 1: ...ENTS TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTA BLY INSULATED FROM TH E SUPPLY CIRCUIT BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER TABLE OF CONTENTS Specifications 2 Service procedures 3 Exploded...

Page 2: ...t 4 ohrns 1kHz DIN 2 x 78 watts at 8 ohms 1kHz DIN 2 x 70 watts at 4 ohms 1kHz DIN 2 x 55 watts at 8 ohrns 1kHz DIN 0 08 at rated power 0 08 at 1 watt outpur 0 08 at rate d power 0 08 at 1 watt ouput...

Page 3: ...33 10 0711 on th e displuy PC board 3 Memory preservation This un it does 1I0t req uire memory pr eservat ion baucries A hu ilt in me mory power back up sy stem prese rves co nten ts 01 th e memory du...

Page 4: ...TX 1430 o 0 Q C W W C o I a w 4...

Page 5: ...screw 3P 6 FN B C Pan hcad screw 4TTC 8C BC Tapping screw 2P 4 F BC Pan hcad screw 3TTP 8P BC Tapping screw Rivet 4TTC I 0C BC Tapping screw REF NO Bll F90 2 F90 3 1 904 1 905 F906 P304 P901 Q508 Q60...

Page 6: ...pti on ill No Code X t al Ccr unic rcso ua tor I Pr oset STATION U sigIlai o utput termin al O utput L during pu shing o f rc mo tc co n tro l ST AT IO N LiI KEY 2 ST ur l res ct STATION D OWN sig na...

Page 7: ...ce condiiion input terminal connccts to POWER output POWER ON with H 15 PH 16 T U 17 1 1 18 1 2 21 G ND 22 REMIN 23 T 2CTL 24 PROTECr 25 CO NT IN 26 POWER Power so u rce control outpur terminal Switch...

Page 8: ...RCUIT I in No I Sym bo l J P Te rmi nal O utp ut term inal Ior sound Dcscri ption I E E 2 8 S l SI Segme nt Oll I put s Displ ay tube s i g n 1 te rmina l ou tp u r an d kc y rc ruru signa l source te...

Page 9: ...ion r uio of Q70 1 to 1 10 or 1 17 whe n rhc pu lse swa llow meihod is used or division FM only 29 GNO Grou nd 30 SHIFT Pre set rcve rsc indieatio n ou tpur Te rmina l for ind iennon ou tp ul whei her...

Page 10: ...o trou e r rc 070 2 ri1 12 Lch from TKC 0204 8 0 106 011 2 0 7 15 R7 5 3 MONO R e h 01 03 FM IF AM rad io svstam 16 0 20 1 S tereo decoder The rnuting circuit o perat es in the following case s 1 Wb i...

Page 11: ...mbined in the contro counter an d the presca ler s divi sion Iac ror is switch ed 1 16 or 1 7 ac co rding to ex ternal co ntro l I 6 whe n th e PSC terminal is H and 1 17 when it is L The stat ion osc...

Page 12: ...TX 7430 z o z o z oe a Cl oe 0 U 0 J m I z Z 0 f U w CI er w u J Q IOtfJN O l Ol J l l UJ J U I I S TW S l NI t lH l O t l J NO ll C t 1f 1 11 0 Q 0 2 C c r u I U 12...

Page 13: ...TX 7430 I I I I I I I z 0 I I I u UJ CI L_ 0 UJ Z z 2 c a J 0 I 0 I...

Page 14: ...1MC1L _ 01 o o z 8 o u w w l o JOD I 0 VS V 1 1Sw 1 0 A2 I W8 1 8 1 I SwCl I I C1 rt sw 02 rt sw I I I oE 1 SOUilCE7 11 w G I 1M7 11Sw l I OUf p PC116 1C3 Stereo decoder I IU 11 I t C l l O BCTL o I _...

Page 15: ...L l L H H L H H H H H H H H l I H H H H L H H H H H L H L L H H H H H L H H H H L H L H s H H H H H H L H H H I 6 L H H L L H H H H H H H H H H L H H C L L H H H H H H H H l H H H H H H H H H l H l l...

Page 16: ...art 5 volts Supply FM Jocal oscillator sigual inpu t Check terminal Gro und terminal Prescaler terminal Prescaler control terminal Not con nected IM CHK PSC X NADLE OUI PUl St 1 L j f 17 pvl us 16 PJh...

Page 17: ...l Master car to n box Black mod el Sealing hoo k Pad R Pad L Tap e Dam plon tapc REF NO 1 2 3 4 5 6 7 PART NO 29 100034 2905 145 6 29 0514 58 282301 290911 58A 29091157 2911003 2 260012 Instruetion ma...

Page 18: ...resistor of 8 ohms to the SELECTIVE TONE CONTROL OFF speake r terminal A of Jen and right charmels unless other wise not ed Amplifier section J Idling current adjustment Connect the DC voltmeter to t...

Page 19: ...A 1490 0 2SA I49 0 Y or 2SA 1490 P 0 909 0910 223163 2239631 or 224323 1 ISS133 ROl2EBI or MTZ12A 0911 22 394930r R06 2 EB3 0r 2243 163 MTZ6 2C CAUTION Replaccment for tra nsistor of rnark c if neeess...

Page 20: ...R521 R902 R905 R908 R912 R914 S90 1 RL801 RL902 P1l6 P352 F902a F906a F902 F90 3 F904 F905 F906 Resistars 52 10064 442 522714 441620104 4000063 400 006 3 44 2520824 4425201 04 441 623914 4416 204 74 4...

Page 21: ...Q303 22240025 Q304 Q404 222465 or 222 502 REC Q801 22240024 Q802 222807 Transistors OP I Q101 0102 221 1722 0r 22 11723 Q104 22122940r 22 11293 PLAY Q105 Q l 13 22 11255 PLA I P302 e N T g I REC co PH...

Page 22: ...24 354742209 22 lF 16V Eleel C128 354780479 4 7 l F 50V Eleet C129 354782299 0 22 LF 50V Eleet Cl3 1 35478 4799 OA 7 lF 50 V Eleel C134 3547 8022 9 2 2 lF 50V Elect C135 C137 354741009 IO lF 16V Eleel...

Page 23: ...27 or 0 047F 5V or 0 706 Q707 Q703 Q717 0720 Q712 0 713 Q714 07 16 Q719 22280 1 Transistors 2211255 22107460r 2212485 22 12600 22 11256 22 11705 22 117060r 22 12794 LPA80C 2SCl 815 GR 2SC945A P or JC5...

Page 24: ...itors C351 C451 35478 0229 2 2Il F 50V Eleet C352 C452 35474 1009 10111 16 V Eleet C354 C454 352983 396 0 33111 50V Non polar elect C357 C457 354741009 101lF 16V Eleet C358 C458 3547 81099 O IIlF 50...

Page 25: ...ION CIRCUIT NO PART NO DESCRIPTION R386 R486 6 182003 N25 LGLlOOKROI0Z Var iable JC resistor 0251 22284066 1 4066 B S354 250 35557 NPS 14 2 L5 19 Push switeh Transistors Q25 2 22 11455 2SA IOI5 G R 22...

Page 26: ...DIS 2874 1 CIRCUIT NO PART NO DESCRIPTION D81 0 2252 19 SLC 22U R4 L E D 272 701 03A Space r SPEAKER SWITCH PC BOARD NASW 2876 1A CIRCUIT NO PART NO DESCRIPTION L50 1 L601 231 001 S 1 3 B Co ils VOLUM...

Page 27: ...t panel Rernove th e five screws A holding the ba ck pa nel arid the chassis See Fig 1 Rernove the four screw s an d the two sc rews C See Fig 2 Rernove th e two scr ews 0 holding the cha ssis and th...

Page 28: ...3 5 Nishi Sh imbashi 3 chome Minato ku TOKYO 105 JAPAN Tel 03 432 6987 Fax 03 436 6979 TLX 242 3551 ONKYO J ONKYO DEUTSCHLAND GmbH ELECTRONICS Industriestrasse 18 8034 Germering WEST GERMANY Telex 41...

Page 29: ...ch 1kHz Reh AC voltmeter Minimu rr Stereo f 65dB f 60d B Fig 3 99 IMHz R20 2 Separation 2 Ext modulation Reh 1kHz Lch AC voltrneter Minimurr 99 l MHz Hi blend 35 2dBf 30 dB Fig 3 99 1MHz Hi blend indi...

Page 30: ...ting switc h on Fig I ANT TE R t1SAL Fi 2 OUTPUT EXT lO DE L I f M I _ DIS ORTIO UNIT 1Hz TI I I TORj i L ANT TERMINA L AC I i lOSCI L LOSCOPEI Fi 3 VO L n IIT E R 1 I Maximum and same separaticn atio...

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