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CAUTION:
Before servicing this chassis, it is important that the service technician read the "Safety
Precautions" and "Product Safety Notices" in this service manual.
ATTENTION:
Avant d'effectuer l'entretien du châassis, le technicien doit lire les «Précautions de sécurité»
et les «Notices de sécurité du produit» présentés dans le présent manuel.
VORSICHT:
Vor Öffnen des Gehäuses hat der Service-Ingenieur die „Sicherheitshinweise" und „Hinweise
zur Produktsicherheit" in diesem Wartungshandbuch zu lesen.
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
SERVICE MANUAL
MANUEL D'ENTRETIEN
WARTUNGSHANDBUCH
October 2005
SM0092
AX-M79
«MODEL NAMES»
Data
contained
within
this
manual is subject to alteration for
improvement.
Les données fournies dans le présent
manuel d'entretien peuvent faire l'objet
de modifications en vue de perfectionner
le produit.
Die
in
diesem
Wartungshandbuch
enthaltenen Spezifikationen können sich
zwecks Verbesserungen ändern.
Service
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Summary of Contents for Hitachi AX-M79
- Page 1 SM0092 AX-M79 «MODEL NAMES» SERVICE MANUAL MANUEL D'ENTRETIEN WARTUNGSHANDBUCH CAUTION: Before servicing this chassis, it is important that the service technician read the “Safety Precautions” and “Product Safety Notices” in this service manual. Data contained within this Service manual is subject to alteration for improvement.
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Page 2: Table Of Contents
Service manual （AX-M79） Contents 1． Triode integrated circuits outline drawing -------------------------------1 2． Debug element scheme --------------------------------------------------------2 3． Troubleshooting check list ---------------------------------------------------3-4 4． Items of safety attention ------------------------------------------------------5-7 5． Fundamental block scheme --------------------------------------------------8 6． PCB layout ----------------------------------------------------------------------9-12 7． Elements layout ----------------------------------------------------------------13-16 8．... -
Page 3: 2． Debug Element Scheme
Debug element scheme )0UHFHLYHUIUHTXHQF\FRYHU /$ /& PHGLXPZDYH$0IUHTXHQF\FRYHU... - Page 4 Triode integrated circuits outline drawings (%& & 37 ,& 7'$ 37 37 /$ .%8 /& .$ & /0 0% $0& ; 37 %$ 7'$,& %$6...
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Page 5: 3． Troubleshooting Check List
Troubleshooting Check List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age 6 Troubleshooting Check List 1RSRZHU &KHFNLIORFDOSRZHULVQRUPDO 9ROWDJHLVQ¶WDFFRUGDQW &KDQJHIXVH &KHFNLISULPDU\IXVHIRUWUDQVIRUPHULVFRQQHFWHG &KHFNLIWUDQVIRUPHUKDVYROWDJHRXWSXW &KDQJHWUDQVIRUPHU <HV &KHFNUHFWLI\LQJFLUFXLW...
- Page 7 6$)(7<$77(17,21 $OXPLQLXP VXUIDFH SUHYHQWLQJ DFFXPXODWLQJ VWDWLFFKDUJHVWRGDPDJHWKHSDUWV 2QO\XVHDQWLVWDWLFFKDUJHVJURXQGHGVROGHULQJ &RPPRQ&RQWUROOLQJ LURQV WR GLVFKDUJH WKH SDUWV DQG FRQQHFWLQJ (6 'XULQJ PDLQWHQDQFH SOHDVH WDNH FRPPRQ SDUWVDQGFRQQHFWLQJ(6SDUWV FRQWUROOLQJ WR SURWHFW FRPSRQHQW V\VWHP DQG 6RPH VROGHULQJ SDGV FDOOHG ³$QWLVWDWLF HOHFWURQLF SDUWV DQG SUHYHQW GDPDJHV WR WKH FLUFXLW FKDUJHV´ FDQ DOVR JHQHUDWH FKDUJHV WR GDPDJH GXHWRLPSURSHURSHUDWLRQ (6SDUWV...
- Page 8 HOHFWURSODWLQJFRSSHU FLUFXLWERDUGVKRUWFLUFXLW 1RWHV 4XLFNO\ RSHUDWLQJ DYRLG KHDWLQJ 3RLQWWKHILUVWHQGWRPDNHVROGHUHDVLO\ HOHFWURQLFSODWLQJ FRSSHU RI SULQWHG FLUFXLW 7RSUHYHQWGDPDJHVIRUSDUWVDQGFLUFXLWERDUG ERDUG SOHDVHFRQILUPGDPDJHGSDUWV G &KHFN WKH VROGHULQJ ]RQH VWULFWO\ XVH LURQ 'XULQJ VROGHULQJ FKHFN WKH VROGHULQJ EUXVKWRFOHDQPRUHVSUD\HGVROGHULQJWLQ FRQQHFWLQJVSHFLDOO\IRUPDQ\SLQVVPDOOSDUWV &KHFNLQJ LV YHU\ LPSRUWDQW DIWHU FKDQJLQJ XVH ,&¶VGLVFKDUJLQJFKDQJLQJ HQODUJHUVROGHULQJOHDNDJHIDOVHVROGHULQJVKRUW ,& SLQV LQVHUWLQJ FKXWH VRPH SULQWHG FLUFXLW...
- Page 9 VNLSZLUHVRQFLUFXLWERDUG 8VH VKDUS NQLIH WR VFUDSH ZURQJ VNLS ZLUH RI HOHFWURQLFSODWLQJ FRSSHU DW OHDVW LQFK¶V FRSSHUWRHQVXUHRQFHVNLSZLUHZRUNLQJ )URP ERWK VLGHV RI EURNHQ HOHFWURSODWLQJ FRSSHUVROGHULQJOHG ZLUHZLWKWKHQHDUHVWSDUWV DORQJWKHHOHFWURQLFSODWLQJFRSSHUZLUH 8VHLQVXODWLQJZLUHVROGHULQJWKHQHDUWZRSDUWV ZLUH 1RWHV (QVXUHLQVXODWLQJZLUH¶V LQVXODWLRQQRW KDSSHQHG WRSDUWVRUVKDUSHGJH &KHFNLQJSURJUHVVRI'9' SDUW :KHQ WKH '9' LV SOD\LQJ LI PXVLF FRQWLQXRXV XQVWDEOHRUZLWKRXW VRXQG WKDW PHDQV WKH '9'SDUW LVRXWRIRUGHUDQGLWVKRXOGEHFKHFNHGDQGUHSDLUHG 1RWHV '9'SDUWFKHFNLQJSURJUHVV...
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Page 10: 5． Fundamental Block Scheme
Fundamental block scheme &(1 7'$ 7'$ 1( :22) 9 1( .$ $8; 1( 7'$ $8; 9781(5 $8;,1 $8;,1 781(5,1 781(5 37 37 '9',1 %/2&. 7'$ ,& /& $03087( /$ & & '9'9 '9'9 &389 9 9 9)9 /$1'5 67%< 087( 9,'(2 0(3* ),/7(5 &21752/ 6(/(1,80... -
Page 11: 6． Pcb Layout
PCB layout... - Page 12 PCB layout...
- Page 13 PCB layout...
- Page 14 PCB layout...
- Page 15 Elements layout ,& %$ ,& %$ ,& %$ & & & & & & 0/,1 05,1 . . . . . & & . & & & 0 0 0 0 . 0 & & . & & & 0 & X) &...
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Page 16: 7． Elements Layout
Elements layout ,& 7'$ ,& 7'$ ,& 7'$ 7'$ 7'$ 7'$ 9HH ' & ' & 5 X) & 5 &1 & . X) )5287 X & & & 5 & X) X) )/287 X) &(1287 65287 6/287 5 5... - Page 17 Elements layout &1 3,1 &25' &1 - &25' 6 - & & O O 9 5 5 9*1' 5 &. &. 5 5 . &/. & '$7$ X)9 5 . & 9)' 9*1' 67% 9)' 67% 5 .
- Page 18 Elements layout &1 3 3 &1 &1 / -5+ *5((1 / -5+ %/8( / -5+ 287*1' / -5+ -$&. $9 / -5+ 6< 6& / -5+ & 287*1' & / -5+ &9%6 / -5+ -$&. 69,'(2 / & -5+ / -5+ 5 5...
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Page 19: 8． Wiring Diagram
Wiring diagram... -
Page 20: 9． Exploded View
Exploded view HEAT SINK AMP BOARD TRANSFORMER TRANSFORMER HOLDER DVD MECHANISM MECHANISM HOLDER VFD CONTROL BOARD EQ KNOB EQ KNOB BUTTON PLASTIC FRONT COVER FRONT COVER LENS(U) DIGITAL DECODE ROTARY KNOB EQ KNOB TRIMMING PIECE FRONT COVER LENS(D) DVD DOOR PHONE JACK EQ KNOB BUTTON... -
Page 21: Specification
specification SPECIFICATIONS MODE L : DVD/AM/FM/AMP 15WX5 + 50 W AX-M7 9 NE-1501D6 ED I T E D : A P P R O V E D : CH E C K E D : Page: 1 of 5 T E S T I N G C O N D I T I O N S : Ver : 1. - Page 22 specification Page) 2 of 5 S ECTI O N LIMITING STANDARD DATA COMMENTS TEST ITEMS U NI T VALUE VALUE M H z L O W 8 7 . 5 8 7 . 5 FREQUENCY RANGE 1 0 8 1 0 8 H I G H 9 0 M H z d B u...
- Page 23 specification Page) 3 of 5 D V D / V C D / C D S E C T I O N T E S T D A T A STANDARD LIMITING TEST ITEMS U N I T VALUE VALUE T D V - 5 2 1 - 8 SCRATCHES 1 .
- Page 24 specification Page) 4 of 5 OTHER SECTION TEST DATA STANDARD LIMITING TEST ITEMS U NI T VALUE VALUE MAX POWER OUTPUT (INPUT A U X ± 3 SIGNAL PRESSURE:1KHz/1V) A U X ± 1 ± 2 RESPONSE (40Hz ~ I.6 KHz) A U X 0 .
- Page 25 specification Page) 5of 5 OTHER SECTION T E S T D A T A TEST ITEMS U NI T N O M . L I MI T L/R OUTPUT POWER( 1KHz OdB,VOL MAX 15 % - 1 0 % T H D ) HEADPHONE 32 , MAX(THD <17%) + 2 0 / - 1 0 AUX TO DVD...
- Page 26 Part list Part list 1('$/) 1('$/) 1('$/) 1('$/) 1(' :3 62&.(7 &20021 3$576 1(' :3 62&.(7 &20021 3$576 1(' :3 62&.(7 &20021 3$576 1(' :3 62&.(7 &20021 3$576 6(7 '$/) '$/) '$/) '$/) 1(' &38 3&% $66 < 1(' &38 3&% $66 < 1(' &38 3&% $66 < 1(' &38 3&% $66 <...
- Page 27 Part list...
- Page 28 Part list...
- Page 29 Part list '$/) '$/) '$/) '$/) 1(' $03 3&% $66 < 1(' $03 3&% $66 < 1(' $03 3&% $66 < 1(' $03 3&% $66 < 6(7...
- Page 30 Part list...
- Page 31 Part list '$/) '$/) '$/) '$/) 1(' 9)' ',63/$< 3&% $66 < 1(' 9)' ',63/$< 3&% $66 < 1(' 9)' ',63/$< 3&% $66 < 1(' 9)' ',63/$< 3&% $66 < 6(7...
- Page 32 Part list '$/) '$/) '$/) '$/) 1(' 287387 3&% $66 < 1(' 287387 3&% $66 < 1(' 287387 3&% $66 < 1(' 287387 3&% $66 < 6(7 '$/) '$/) 1(' +($'3+21( 3&% $66 < 1(' +($'3+21( 3&% $66 < 6(7 '$/) '$/) 1(' +($'3+21( 3&% $66 <...
- Page 33 Part list 1('$/) 1('$/) 1('$/) 1('$/) 1(' 121&20021 3$576 1(' 121&20021 3$576 1(' 121&20021 3$576 1(' 121&20021 3$576 6(7 /) /) 1( %5$&.(7 $66 < 1( %5$&.(7 $66 < 6(7 /) /) 1( %5$&.(7 $66 < 1( %5$&.(7 $66 <...
- Page 34 Part list $/0/) $/0/) $/0/) $/0/) $/0 63($.(5 %2; $66 < $/0 63($.(5 %2; $66 < $/0 63($.(5 %2; $66 < $/0 63($.(5 %2; $66 < 6(7...
- Page 35 Part list $/0&/) $/0&/) $/0&/) $/0&/) $/0& 63($.(5 %2; $66 < $/0& 63($.(5 %2; $66 < $/0& 63($.(5 %2; $66 < $/0& 63($.(5 %2; $66 < 6(7...
- Page 36 Part list $/0+/) $/0+/) $/0+/) $/0+/) $/0+ 63($.(5 %2; $66 < $/0+ 63($.(5 %2; $66 < $/0+ 63($.(5 %2; $66 < $/0+ 63($.(5 %2; $66 < 6(7...
- Page 37 Part list 6:/) 6:/) 6: 683(5 :22)(5 63($.(5 %2; $66 < 6: 683(5 :22)(5 63($.(5 %2; $66 < 6(7 6:/) 6:/) 6: 683(5 :22)(5 63($.(5 %2; $66 < 6: 683(5 :22)(5 63($.(5 %2; $66 <...
- Page 38 Part list '$/) '$/) 1(' 0(7$/ 3$576 1(' 0(7$/ 3$576 6(7 '$/) '$/) 1(' 0(7$/ 3$576 1(' 0(7$/ 3$576...
- Page 39 Part list '$/) '$/) '$/) '$/) 1(' 3/$67,& 3$576 1(' 3/$67,& 3$576 1(' 3/$67,& 3$576 1(' 3/$67,& 3$576 6(7 5(/) 5(/) 5(/) 5(/) 5( 5(027( +($'6(7 $66 < 21/< )25 '9' 86( 5( 5(027( +($'6(7 $66 < 21/< )25 '9' 86( 5( 5(027( +($'6(7 $66 < 21/<...
- Page 40 Part list '$/) '$/) 1(' :,5( 3$576 :3 62&.(7&+ 1(' :,5( 3$576 :3 62&.(7&+ 6(7 '$/) '$/) 1(' :,5( 3$576 :3 62&.(7&+ 1(' :,5( 3$576 :3 62&.(7&+ ...
- Page 41 Part list $/) $/) 781(5 3&% $66 < /$/& 781(5 3&% $66 < /$/& 6(7 $/) $/) 781(5 3&% $66 < /$/& 781(5 3&% $66 < /$/&...
- Page 42 Part list...
- Page 43 Part list...
- Page 44 Fax: +46 (0) 8 562 711 13 Tel: +39 02 38073415 Servizio Clienti Email: csgswe@hitachi-eu.com Fax: +39 02 48786381/2 Email: customerservice.italy@hitachi-eu.com HITACHI EUROPE S.A.S HITACHI EUROPE LTD (Norway) AB Lyon Office STRANDVEIEN 18 B.P. 45, 69671 BRON CEDEX 1366 Lysaker FRANCE...