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Regency MCA-611, Руководство по обслуживанию

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Содержание MCA-611

Страница 1: ...R SERUIGE MAilUAL 01 GALI ATERT RECEIVER M IDET M0A 6II g a G0ilMut lcATl0l ls lJlc 1227 S PATRICK DRIVE SATELLITE BEACH FLA ...

Страница 2: ...ecifications SEqTION 2 CIRCUIT DESCRIPTION 2 L Crysta1 Select Circuit 2 2 RF Front End 2 3 OscilLator Multiplier 2 4 r F 2 5 auaio 2 6 two Tone Sequential Decoder 2 7 Larp logic and Igniter Drives 2 8 Decoder Reset SECTION 3 ALIGNMENT PROCEDT RE 3 l Final Test Procedure TP L4 254 3 2 Test Procedure Two Tone Seguential Decoder TP 14 2I9 3 3 Schenratic 3 4 Top View 3 5 Bottom View SECTION 4 PARTS LI...

Страница 3: ...ifications SECTION 2 CIRCUIT DESCRIPTION 2 L Crystal Select Circuit 2 2 RE Front End 2 3 Oscillator Multiplier 2 4 r F 2 5 audio 2 6 Two Tone Sequential Decoder 2 7 Lanp Iogic and Igrniter Drives 2 8 Decoder Reset SECTION 3 ALIGNI ENT PROCEDURE 3 1 Final Test Procedure TP L4 254 3 2 Test Procedure Trro Tone Sequential Decoder Tp 14 2I9 3 3 Schernatic 3 4 Top Vi ew 3 5 Bottom View _ SECTION 4 PARTS...

Страница 4: ...ws for trrc first tones or A tones which can be either the sane or d ifferent depending on the owner s requireaents the MCA 611 utilizes silicon transistors for reliability as well as ten integrrated circuits the tone decoder is a digital device unlike older modelg that used reeds In add ition both a c ystal first I filter and a ceramic second I F filter are eryloyed This provides superi or perfot...

Страница 5: ...hreshold 3 Uv I EF light 34Uv trtP Adjacent channel Low Vtll 30 50 MEz 60 High VIIF 145 170 82 65 uIrF 450 500 MEz 45 Spr rious rejection except primary inage sOdB Inte anodulation attenuation 2mB QUfETXNG 12dB SINAD 43 65 5e 4s ss 46 MAB 8 5 KHz Freq stab teup 0006t fHF Freq stab volt 001t VIIF Audj o response EIA 2 e 6dBloctave de emphasis Audio out power nax 5 Squelch blockj ng Meets EIA specs ...

Страница 6: ...s D12 RST i agut tCA 611 onlyl 9V nax K5 lticrophone hang uB r O enable open reset Outputs DO MSG laq driver ICAO O i 2 rray only 30na sink D1t MSc latch Q output 1 CA 6L1 only l3ua source K7 sq conteol MrcRo oM 2 r qy ody l5oa sorgce Sensitivity decoder ryjth ar dio l2dB sinad IOO detecr 6dB sinad 75t detect I l lcA 611 3 SECTION 1 ...

Страница 7: ...tainers and slide it fonsard r ntiJ it trakes good contact Then attach tbe battery retaining bracket cn the back of the battery and snug it forrrard untIl the battery is held firmly tighten tlre bracket screw C rzstal Installation The follorring Regency Part Nurnber c ystals are used Low VIIF 3C 542 High v HF 3OL 532 UHF 301 603 Crysta1 socket 01 XIL socket frrrthest from speaker corresponds to th...

Страница 8: ...propriately equipped radio to decode either AB and AC or ZE and ZF An interna l corurection will allow the radio to decode A8 AC O ZF regardless of the duty sritch position Alert and Ex Pwr Liqht Steady light indicates AC Poner ON No light indicates radio is on battery Slon Elashing Iow battery Fast FLashing a sj gmal has been received Rear Panel For convenience of srcbiLe operation we have includ...

Страница 9: ...85 Mffz 33 48 2833 ffiz UHF Band CtYStal frequency channel frequ ncy lO 7MIIz 9 Exauple Crysta1 frequency 458 0 MIIz 10 7 l lHz _333 lgJS 49 70000 f tEz 2 Frequency tolerance of O 00Lt on lligh Band and UIIF Eand 0 0O2t on Low Band 3 UIIF Band 3rd overtone load capacity of 18pf drive level of 2 nillj qratts 4 vEl Bands 3rd overeone series resonance minus 450 Hz 5 Ma i uum i mpedance of 35 ohms 6 I...

Страница 10: ...RoNT END Q201 is the l ow Band rHF a4rlifier varactor tuni ng is used in the input and output circuits to detenine wtretlrer the circuits are tuned to the upper or lower segnent of the low band The RF signal fron Q201 is coupled to the input of the low band mixer Q2O2 Q203 is the lligh Band r EF RF anplifier lhe input circuit is dor rble tuned varactor tuning is used to tr ne both parts of the dou...

Страница 11: ...ified outirut appears at Pin 1 of IC304 The voltage has to be 4 rmp in order to trigger the detector in IC3O3 The audio is fr rther auftlified by IC304 and the output PiJr 7 IC304 is fed to the ha monic detector of IC303 Pin 5 the ha monic detector wi l stop the decoder from detecting any ha monics of tlre tone to be decoded When the correct tone is present the detector output after being delayed ...

Страница 12: ...Q2l1 i rto conduction 2 8 DEcoDER RESET Resetting the decoder is accougrlished by driving Pin 13 of IC303 to less ttran lV for at least 25os Xhis uay be done in three eraysr the carrier controlled reset tlre t ine out reset and front panel sltiteh Sl 405 The front panel switch j s t re only way to reset botb the signal light and the decoder a junper is i nstalled at the factory fro fiI Dls to IU D...

Страница 13: ...SECTION 3 ALIGNIiIENT PROCEDURE ...

Страница 14: ...ieve the lower band sensitivity por the low VI F bands tune for the best cornbined sensitivity Some compromise in sensitivity rnay be necessarv betrveen any two bands f f only one frequencv is bej nc r used for a given preselector then tune up the radio for best sensitivity on that particular frequency nariio Preset L Connect DC power suppllr to DC power connection top nin of 3 pin connec tor on t...

Страница 15: ... signal Generator output until the AC voluneter reading is mid range 5 Ad just L208 for maxinn m AC voltmeter reading Re ad just the signal Generator s output to maintain voltmeter reading near mid range Note ff the RF segnents refuse to tune up or will not al1ow fuIl rated sensitivity check the position of the band select pin with respect to the frequency of the crystal and the band select jurnpe...

Страница 16: ...enerator accurately to the frequency being used for aligrunent Connect generator f output to antenna in5rut jack Adjust Signal Generator s output until AC Vcltmeter readi ng is mid ranqe 5 Adjust C226 C228 and C245 in that order for maximum AC Voltmeter reading Re adjust Siqnal Generator s output to maj ntain voltmeter reading near mid ranqe Receat adjustments until no further irnorovemint can be ...

Страница 17: ... adjusted by varying R293 The llSG LED will be flashing at a very fast rate and will reqain flashing when the decoder has been reset 5 he ltSG L ED can be reset by pushing the reset srritch to the riqbt Battery Voltage l arning AdjusUnent for battery equipped models only v 1 Place a DC Voltmeter probe on test point ltll and adjust R296 for 4 0 volts trhe slow flash rate alar n will trigoer when th...

Страница 18: ...TETIT T P Qczec sAr o OLll SELECT f1o ao C aao2 C azo6 fluXa l o o e228 6o oP n 1206 C o2o3 Ottou Oo2or Otaae L 203 uo to FROi T OF RADIO RECEIVER AIIO CHRYSTAL SECTIOT Lzil o PoozoE PART fiUXEER 1 P14 254 DO NOT SCALE O G FIGURE I ...

Страница 19: ...ER l_ ouT Tlo nr qrT ADTIUSTIEilT ru Dl5 caRRtER CONI ECTED TO RgSET rU Dl3 ICT ITER DRIYER PULSED fionmeu v D G TAL FtLTEF lcNrTER DR VESTLOt BATT IHD CATOR CARR ER T ME OUT RESET RGURE 2 rc20 ORAWN OATE srzE A PAPJ HUHEER TP14 254 REV A APPROVED 7 f J iJ l 3 MTE l t t r DO NOT SCALE DIIJG SCALE snEel 6 ...

Страница 20: ... E O SLUG FLUSH I I POSITIVE NUMEERS ARE COUIITED AS NUTE R OF TURfttS CLOCKWIS FROil FLUtil r POSITTOI LOU VHF TUNITIG CHAR HIGH VHF TUNIIIG CHART FIGURE 3 PART f UX8ER TPL4_254 APPRovEo _ r Jr t DO NOT SCALE DVJG ...

Страница 21: ...IN POStTtOil OF rtx c ALL YALUEs ARE CIVEII III DEGREES 27A Fior IAX C COUtlTEn CLOCrrtSE c22e o Oo 475 IHr ttSO ilHr 4E5 IH eO IHz 4EOTH SOgllHz EO o 90 360 r80 160 27o t80 jgoo 278 3600 o 270 90 oo UHF TUNIIE CHART FIGURE 4 REV A P14 2 54 Sheet I ...

Страница 22: ... he DC power supply can be substituted by using the radio s own AC supply 117v 6OHz Set radio controls as folloqrs a Voh me comfortable listening level b Squelch upper mst slide position c Alert nonitor switch in alert position d Duty switch in normal position e I requency switch in nor utal position f an Off switch in ON position Set the frequency of the RF signal generator to the norral crysta1 ...

Страница 23: ... read on ttre frequency counter i REplace JO3OI on tlre pla 2 Using an osciLloscope a Connect probe of oscilloscope to Pin I of fC3O1 Set vertj cal sensiti vity to lv per division r b Adjusc R302 so that the period of the oscillation displayed on the oscitrloscope is as follows toscA l 8 x fO where fO is the frequency of Trone A c Put in enouEh signal to quiet the receiver and modulate the sigmal ...

Страница 24: ...just R318 for eight times one of the otlrer tones say Tone C 8 x 41C 8 Hz 3 286 4 Ez Norr gror nd the junper against the case and adjust a32O for I x 389 0 llz 3 112 IIz Norr adjust the inter tone tining according to ycur requi remeits Suppose tlre pe iod of the first tone is 75 sec and the pe iod between tones is 5 sec the final tone is also 75 sec then One shot neriod period of lst tone period d...

Страница 25: ... rt Res t Option a TuJrt up RF signal enough to quiet the receiver b Modulate the signal generator with the proper tao tone sequence c The squelch should open allowing the receiver to operate nomally for a given geriod of time This time period can be adjusted by vary ng R293 The t SG LED will be flashing at a rery fast rate and wj ll remain fla ring when the decoder has been reset d he t4SG tED ca...

Страница 26: ...f RAoro I _ _ HIGR PSDA CE ATP TEST TNTERCON FIGI t r I TWO Tof lE I I sEouerrro I eerenaron I 7 I powen supeuv I I FREOUETTCY I t g l i NECTIOil DIAGRAT JRE I 0RAWll OATE SIZE A PART flUTBER TP14 219 REV A o soueo r ffi D rE I tf L DO NOT SCALE 0 c SCAL lsl ET l3 ...

Страница 27: ...FRONT OF RADIO rc303 _lrcaoz R3IE R320 n3 7 R30r f t t rc30t I l o ro 3or prr ilrc3o4 TPl4 219 DO NOT SCALE DWG ...

Страница 28: ...Lt5r af D I 420 l I ir I l la6 ll 00 lr oot It rlzar ttD i I I I I l I sr4ol l I lmm_l n250 roI n25t DI ...

Страница 29: ...L___ f m L_Jro u c li eo r ol rox I t3o2 I t305 G w I r2ox I 2K e If I LeTl r6v l T 2l JU 6 l rzl oo L l 91 I e I u LBorl l R43 l l sxq l l lo l l cror l l arorl l Jrorl l sPror I roror im 1_39 Its l i I ruzl tzo tnt rr4 l lr 1r 1 trlnTr rrr I L J n269 l0 fis lmh _ae 16v l_ __Jiil IM W RB I tc2ila I m4 l dLw L px GXm flEi uiru E 503 R306 I TEG f rox r EXER EJ I si l6r 6lrcc rto m il w osLl ot w rd...

Страница 30: ...3 4 TOP VIEW ...

Страница 31: ......

Страница 32: ...Po 50v 1trrf 8 2 50V 47mf 15v 2Q PARf NI MBER c201 c202 c203 c204 c205 c206 c207 c208 c209 c2LO c211 c2l2 c213 c2 4 c215 c2L6 c217 c218 c2L9 c220 c22L c222 c223 c224 c225 c226 c227 c22A c229 c230 c23L c232 c233 c234 c235 c236 c237 c238 c239 e240 e24I c242 c243 c244 c245 c246 c247 c24A c249 c250 I ICA 611 L500 0270 650 L500 0220 605 1500 0279 20s 1500 0270 550 1503 0102 003 1500 0399 905 1510 0478 ...

Страница 33: ...hoke LM 2 RF fnput coil coil coil RF wht coil Loop T coil Osc 450MlIz choke 12 Uhy choke 12 Uhy coil T 4R coil PART NTIMBER 1508 0102 6ro 1503 0104 010 1500 0330 505 1523 O471 002 1502 0204 oo6 1503 0103 007 1500 0829 905 I503 O103 007 1508 0472 610 1505 0151 550 1508 0102 510 1508 O102 610 1513 O050 O03 1508 0683 610 1508 0332 610 1503 0103 007 1502 0503 003 1513 O Q2 002 1513 0101 002 1502 q2n4 ...

Страница 34: ...4704 OLO2 O32 4704 0101 032 4704 0I03 032 4704 OI03 032 4704 OLO2 O32 4704 OTOI 032 4 704 0182 032 4704 0393 O32 4404 O182 032 4704 OW3 O32 4704 0223 032 4104 A223 O32 4704 OLA2 O32 4704 0103 032 4704 0223 032 4704 O101 032 4704 027t O32 4704 0222 A32 4704 O103 032 4704 0680 032 4704 0222 O32 4704 0393 032 4704 01_03 c32 4704 A223 O32 4704 0680 032 4704 OLO2 032 4704 0222 032 4704 0393 O32 4704 AL...

Страница 35: ... 470K var DESCRIPTIQN PART NUMBER 4704 O39L O32 4704 0393 O32 4704 047L 032 4704 0393 032 4704 0393 O32 4751 0103 002 4704 O103 032 47A4 O473 032 4704 O393 O32 4704 OL84 O32 4704 OLO4 O32 4704 0684 032 4 IO4 O274 032 4704 0155 032 4704 O155 032 4704 0473 A32 4704 0474 032 4704 r Jg_22 032 47O4 O474 032 4704 0273 032 4704 O273 032 4704 A274 032 4704 0339 032 4704 O121 034 4704 OIA3 O32 4794 A683 O3...

Страница 36: ...P sM 4306 5 sPS 952 2 not used sPS 952 2 MPS AO5 l4PS A05 sPS 952 2 MVIl72 lfi I172 t ff220I MV2201 l IV220I ry2201 rN4148 rN4L48 rN4148 IN4I48 MVLl72 MV220L rN4148 rN4148 rN4148 rN4I48 IN4I48 rN4148 rN4148 rN4148 rN4148 rN4L48 rN4148 rN4148 rN4002 rN4002 rN4002 rN4002 Zener 5 1V rN4148 rN4148 rNA148 rN4148 IN4I48 4809 0000 001 48oe oooo ooi 4809 0000 004 4809 O000 o04 4809 0000 o04 4809 0oto 004 ...

Страница 37: ...CRIPTION PART NI MBER A CRYSTAL x2o3 crystal 10 245 l4Hz 2301 3151 601 CRYSTAL F ILTER xF2Q1 Xtal filt 2P 10 7 Mttz 27O5 3232 2OO c ERAM I C F I LTER CF201 cer filter CIU455D2 27OO 32O9 5OO Lif t4cA 611 6 SECTION 4 ...

Страница 38: ... 1508 0473 610 1508 0473 610 1508 0473 610 1508 0473 610 1508 0473 610 I508 0473 610 1502 0104 006 1515 O010 003 1513 O100 001 1513 0010 002 1506 0471 550 1506 0471 550 I515 00L0 003 15r5 0478 003 Is01 0100 001 3130 6050 700 3130 5050 700 3130 6062 000 3130 3167 909 475t 5429 AA5 4704 0L24 A32 4704 0103 032 4704 0682 032 4104 0223 O32 4704 0105 032 4704 0105 032 4704 0103 032 4704 0274 032 4704 02...

Страница 39: ...704 0474 O32 4751 0105 002 475L 5429 AO5 41O4 0682 Q32 475L 5429 OO5 47A4 0682 032 4704 0683 O32 4704 0L53 032 4704 O472 032 4704 O105 032 4794 9335 032 4704 0103 032 4704 0103 032 sPs 1475 sPS 1476 sPS 952 2 sPs g52 2 rN4148 rN4148 Diode Gsm Diode Ge m Diode Gsm Diode Ge m rN4148 rN4148 Blue op BIue Top 4801 0000 003 4801 0000 003 4801 O000 015 4801 0000 o16 4805 1241 200 480s 1241 20d 480 1233 9...

Страница 40: ...rn tvl 5K var 7 5K var switch switbh switch switch switch slide slide slide slide SPDT SPDT SPDT CONTRO L BOARD are Lw 5 r nless othsrrise noted 4704 047L A34 4752 5L35 302 4752 5L35 307 51I3 323I 60I 5113 323I 601 5113 5135 203 5113 5 135 203 5113 3231 501 4810 1282 900 Diode LED Red MCA 611 9 SECTION 4 ...

Страница 41: ... f 41 I CHASSIS LOCATION DESCRIPTION R10t resistor 1 meg T10l transfor rner SP10l spkr2x6Sohm r4cA 611 PART NUMBER 4701 0105 044 5604 5100 600 1301 5101 000 10 SECTION 4 ...

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