Onkyo T 405 TX Service Manual
This is the 16 pages manual for Onkyo T 405 TX Service Manual.
Read or download the pdf for free. If you want to contribute, please upload pdfs to audioservicemanuals.wetransfer.com.
Extracted text from Onkyo T 405 TX Service Manual (Ocr-read)
Page 1
2. T o in it ia liz e th e u nit T his d evic e e m plo ys a m ic ro pro ce sso r to p erfo rm v a rio us fu nctio ns a nd o pera tio ns. If in te rfe re nce g enera te d b y a n e xte rn al p ow er s u pply , r a dio w ave , o r o th er e le ctr ic a l s o urc e r e su lt s in accid ent w hic h c a use s th e s p ecif ie d o pera tio ns a nd fu nctio ns to o pera te a bnorm all y . T o p erfo rm a r e su lt , p le ase fo llo w th e p ro ce dure b elo w . 1.S et th e u nit to th e s ta ndby m ode 2.P re ss a nd h old d ow n th e M EM ORY b u tto n, th en p re ss th e D IS PLA Y b u tto n. 3.T he s e gm ents o f th e F .L .tu be lig ht o n a nd th e u nit is s e t to th e te st m ode. 4 .'C le ar' is d is p la ye d w hen th e p ow er s w it c h is p re sse d in th e s ta te o f th e te st m ode a nd th e m em ory is c le are d. 1. R epla cin g th e fu se T his s ym bol lo ca te d n ear th e fu se s in dic a te s th at t h e fu se u se d is fa st o pera tin g ty p e. F or c o ntin u ed p ro te ctio n a gain st fir e h aza rd , r e pla ce w it h s a m e ty p e fu se . F or fu se r a tin g r e fe r to th e m ark in g a dja ce nt to th e s ym bol. C e s ym bole in diq ue q ue le fu sib le u tlis e e st a r a pid e. P our u ne p ro te ctio n p erm anente , n 'u ntilis e r q ue fu sib le s d e m em e ty p e. C e d arn ie r e st la q u le p re se nt s ym bol e st a ppse . C IR C UIT N O . P A R T N O . D ESC R IP TIO N F901 252075 2.5 A -S E-E AK,F use F M Tunin g R ange: 87.9 0 - 1 07.9 0 M Hz, 2 00 k H z s te ps ( U .S . & C anadia n m odels )8 7.5 0 - 1 08.0 0 M Hz, 5 0 k H z s te ps ( O hte r a r ea m odels ) U sa ble S ensit iv it y : M ono : 1 2.8 d B f 1 .2 µ V , 7 5 O hm s IH F Ste r eo: 1 9.2 d B f 2 .5 µ V , 7 5 O hm s IH F 50dB Q uie tin g S ensit iv it y : M ono : 1 8.0 d B f 2 .2 µ V , 7 5 O hm s Ste r eo: 3 8.0 d B f 2 2 µ V , 7 5 O hm s Captu r e R atio : 1 .5 d B Im age R eje ctio n R atio : 8 5 d B IF R eje ctio n R atio : 9 0 d B S ig nal- to -N ois e R atio : M ono: 7 3 d B IH F Ste r eo: 6 6 d B IH F Sele ctiv it y : 5 0 d B D IN ( ± 300 k H z, 4 0 k H z d ev .) A M S uppr essio n R atio : 5 0 d B Tota l H ar m onic D is to rtio n : M ono: 0 .5 % S te r eo: 0 .8 % F requency R esp onse : 3 0 - 1 5,0 00 H z ( ± 1.5 d B ) Ste r eo S epara tio n : 4 0 d B a t 1 k H z 30 d B a t 7 0 - D 1 0,0 00 H z O utp ut L eve l : 0 .5 V ( U .S .& C anadia n m odels ) 0 .7 5 V ( O th er a r ea m odels ) M utin g L eve l : 1 7.2 d B f 2 .0 µ V , 7 5 O hm s AM Tunin g R ange : 5 30 - 1 ,7 10 k H z, 1 0 k H z s te ps U sa ble S ensit iv it y : 3 0 µ V Im ag e R eje ctio n R atio : 3 0 d B IF R eje ctio n R atio : 4 0 d B S ig na l- to -N ois e R atio : 4 0 d B Tota l H arm on ic D is to rtio n : 0 .8 % O utp ut L eve l: 0 .1 5 V G enera l P ow er S up ply : A C 1 20 V , 6 0 H z AC 2 30 -2 40 V , 5 0 H z Pow er C onsu m ptio n : 9 W D im ensio ns ( W x H x D ) : 2 05 x 7 6 x 2 79 m m 8-1 /1 6" x 3 " x 1 1" Weig ht : 1 .7 k g , 3 .7 lb s. A M r e ce ptio n is a va il a b le o nly o n t h e U .S . a nd C an adia n m odels . S pe cif ic a tio ns a nd e xte r nal a p pea ra n ce a r e s u bje ct to c h ange w it h out n o tic e a s a r e su lt o f p r o duct im pr ovem ent. S PEC IF IC ATIO NS SER VIC E P R O CED URES T-4 05T X
Page 2
BLOCK DIAGRAM FMANTENNA TA N K CIRCUIT TR1 RF AMP TR2 MIXERIFT Q101.Q102 FM IF AMP L101.L102 FM IF TRANSFORMER Q103 FM IF SYSTEM/MPX AND AM RADIO SYSTEM LA1837L103 L.P.F Q105 MUTE SWITCH Q107 GATE CIRCUIT Q106 MUTE SWITCH L104 L.P.F TR3 BUFFER TR4 FM LOCAL OSCILLATOR Q174 FM+B SWITCH Q701 PLL SYNCHESIZER AND CONTROLLER LM7001 Q702.Q703 L.P.F X701 7.2MHz RESONATORQ901 REGLATOR Q902 REGLATORT901 NPT-1102 P902 X751 4.19MHz RESONATOR Q753 RESET Q752 F L TUBE 10-BT-167GK Q754 BUFFER49 SYS OUT 46 SYS IN RI IN/OUT DIDIGT SEGMENT 41 DATA 40 CLK 39 PLL 23 SD 22 STEREO 24 SIG 17 34 35 27 28 12V 5.6V -VP F L TUBERight Left 19 MUTE 54312 15118 FM 9 10 7 1921 19 17 16 18 20 30 15 14 11 7 6 MUTE OUT STEREO SIGNAL AUTO/MONO R101 FM MUTE LEVEL TUNED CIRCUIT T-405TX