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Pathfinder Radar/Chartplotter Series Service Manual

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3. BOTTOM SIDE CONVENTIONAL COMPONENTS ROME a EES TOP SIDE SURFACE MOUNT COMPONENTS P C B DETAIL 3015 129 RESISTOR 1206 27K 15 0 1254 R146 m m cela 2 ear ee Era q VE cz 23 RESISTOR 1206 1K 1 0 125W R1 4 13 20 33 34 63 64 87 IMS c23 2 R2 cou C18 ux au 101 104 113 115 122 134 142 143
4. TOP SIDE SURFACE MOUNT COMPONENTS TOP SIDE CONVENTIONAL COMPONENTS cases ag mr E Es sp ES ey m e z E MIELE Ltd zf a ov D45 Pu R fe 3 pa RE ka LE ces j Vis R163 R132 R133 5 3 w bape E B B eee alle ZEE EL ae a Deal hie l wale CRT a U evil ES SE KJ z exe Hmmm s Z 1101 Se T kal 16 kal 83 8 a ves l gt FEN CNS CNL c g g DER ge l E E HS NTG te ij ak asi ZS key 279 R309 Riisjerg LE ao Eu wf Sa met ic c ei c63 8 E Sys a a E zle S use A en ES l oe Cas 3 PE kai fele Si lef ele UT Si D68 ho Rawaj 9 p an o ke a P BS a e ws f af ER cn Van c He a H R367 L6 cze qo e ER F lt l 3 e
5. CNS Connector to Ship s heading sensor 3 HT 1 HT2 HT3 2 HEATSINK HEATSINK HEATSINK VX PSU 1 Modulator PSU 1 2 4KW BKN ALI TPLATE SHGND BI MODULATOR X X X vx MOD SENSE 1 MOD SENSE 1 5VB MOD SENSE2 MOD SENSE2 SHP BZ FET INH GND VREF2 MOD_OV MOD_OV S amp MOD ISENSE MOD 300V BE MOD 300V GND CNS on MOD 6 3V E EMOD 6 3V HEAT_EN_N HEATER B HEATER 1 MOD 12V IF 5V HEAT CATH __HEATERZCATHODE 2 L HEATER OK PA Connector from IF 5V IF 26V MCLOCK Connector to ship s supply IF 5V GND Magnetron a 5 IF 12V PWO 2 K a CN1 PSUHV SCH Pwi a 1 PSU2 Receiver PSU 5 2 MCL OCH PRI 3 FET INA BI 4 BATT_IN BATT IN 5 BAT IN BATT IN IF 5V 6 RADAR TX EN 7 pou IF 26v 6 HTGAT MODULAT SCH IF_ 12V EVREF2 GNDB ESTEP 5V IF 5vB 4 PSULV SCH TP376 1 S erz Visual Build Std Identification 4 R368 R369 R370 R371 R372 R373 Connector to 680R 1KO 1KB 3K9 680R 15K IF Board 2 4 6 10 STEP 3 0 CN2 1 IF_ 5v P377 IF 5V I 3 HEATER OK P IF 26V 3 PHASE DRIVE 5 GND CN3 x 6 RTE BER 5VM B 1 v 2 8 PRI_PLS ov E OV 3 9 PWO 7 y 10 STEP IO H3 5 Connector to 3 phase Motor
6. TP61 TP196 TP194 R357 CN5 3 1 1 1 GND SHGND gt R40 CN5 2 R197 NOTE CT1 D16 R85 fitted on 6 and 10KW versions only 330R EE SV 5v an Dosen Pon R179 fitted on entry level only JP14 linked Ba TP58 4 TP495 a U23A P60 CN5 1 R195 1 x NOTE 2 For entry level fit JP1 Bz 1 1 4 SHP do not fit D24 R173 R174 C49 C115 Bajo For n KW f P n v mponen 1 LM358 R199 or 6 and 10 it JP2 and above components BAA pu 470R 8 U23B Ships Heading Interface TP15 vx ete S E GND 6 R200 b 4K7 LM358 R338 TP337 R358 GND 4 10R x CLOSE TO U11 1 GND GND TES C33 C165 A gt o e et O 1U AR iu C31 O o iu You TP241 Le ka 1 ov ov ge BATT TP23 4168 Ei 12 5 TX 10R ES d BS 3030 139 IssB j DA tnofit 1kV MOD 12 2 GRE L Comes C73 gd M MOD 12V gt 2 560 0 1 re ner B gt 108019979 _ C46 ae R104 1 2 100u TP175 R325 ov O 1u eke ov ov 110010 VREF2 100k 2 GND TP186 J22 3 12 2 1 1 comp Q31 o e e MOD 300v gt gt x U11 hy Bceas d 8123 a Jedi Sap tety R367 st ariy 1 38 oR 1 1 4 AW AAA Mod 238 OSWA GAY 4kW 270V 28 eee A325 188 TP187 TP236 SE KADRY Dn LY E b230 5 Ton D97 ac 4
7. TOP SIDE SURFACE MOUNT COMPONENTS TOP SIDE CONVENTIONAL COMPONENTS cessi S glas ss ETE SE 8 Ped s e i 7 n ope JE IYE Inm 3 sr s uzi 83 ma NE D SEE ke g L Le F 3 m T 04 k 3 sd 8 ES ces l T JE R 32 R133 x 2 ij pr sou eg Esq to ZE E ps2jos3 ps pss al lrlol 8 5 Ted R276 au se E S R fa Sex Eud kve kzes o gu e al ala Ze r185 R183 e c61 w R248 Lo N SE ZEN LiLo U2u wa 123 zi feses Fels Bil vas lel css ENS Li CN ce P RER al li EI e SU GE amp gp cii m 2 Fey Revel Ces lt El zlz axes Rusjer La 7 d ui JE z 5 Die RVA Ps e 5 ES SS Ru maj 5 uzi Rires 8312 P e El ks l ET Em l 3 H i A MX c91 b k 83 SI usa LE Li cNi css as ka R30 ried S aje TULIA de z D68 F EE 8 EYE pi a ce Jo 2 RE fag Zei L pes E el s 2 N oe 036 z 3 e cu7 m k Iz L6 038 N u R235 p m D23 D Ee N ee EN c ei ZA Fal Du c67 x te ES rez LAT Gescht m Ii s AN 4 sr Qe Kal E Enareed e c132 c P O m En ose be BADZ nA EXE R33 D88 L VD 3 C98 T 7 3 Rees HA SEE AE i c
8. 64 Bi IF Receiver Top level Lae 65 IF Receiver PCB Layout se 66 Service Manual 83139 1 Ch6 55 Raytheon Pathfinder Radar Chartplotter Series 18 2kW and 24 4kW Scanner Interconnections Les mine mie S 2 OR 4 CORE YA C POWER I co AX 1 DISPLAY lt VIDEO t 7 6 CORE 4 UNIT lt _ CONTROL 7 CN NE B ov BZS 2 N p BATT 5vB N C EPER Na SH ND al 3 CNS OPTO PCB B SHP SENSOR IF RECEIVER amp MICROCONTROLLER MODULATOR amp PSU BLU SSHGND 8 1 RED PX E ta vipeo 5 1 g sv NED Bs N Z 4g eno sv 2 esu i NRN ber 6 B a Y PRI OUT HEATER OK 3 amp HEATER OK ES ts 5 4 4 la ovBI 5 o ska E PRI_OUTB 26v eem 26V gt 4 5 a 5 6 ser 10 GND S gono LeB P 3 6 7 6 H2 g CN3 SER_IOB 12v AA q 12V gt Kor USED 8 AZ_SHP_OUT GND se 7 lacND LIB OPEN ARRAY SYSTEMS ONLY SHP R R 1 ta az sun Doum PRI_PLS BI 8 BPRI PLS H3 E V RE Pwo BE 9 Bpryo 5v B 10 PA CN2 10 n gf STEP 10 STEP IO 1 11 7 Wama GND PWA BIN 11 BPw1 2 12 B 50MHZIF MOTOR ENN Br 12 MOTOR EN N 3 13 RF ATTENV
9. lt ni Addns 18418984 3ufrilv4 AlddNS 43113934 Service Manual 83139 1 Ch3 27 Pathfinder Radar Chartplotter Series Raytheon Aresseoou JI ooe dei ureda1 sewep 10 Ajqwasse ojqeo uoqqu kem g 40840 Ajquesse euuejue adejday einzies Buueaq euuejuy GFZIIS YO 3dl1S ON Linva gId Sd GOW HOLOW Jo Ajquesse ajqeo PA YIddILS uogqu Aem g padsns uids euuejue saoq puey Aq euuajue uidsg TYNDIS ON JOBJUI suono uuo2 e Pd 10 0ouUOD gad 8A881 1 A09 J9AI929J 41 0 GI Uld 1819991 4 99B doH Aajind j eaoway gd ye poof si jeubis dood MES 5eJi lui dus god BUUSJUE yo NSd QON eAowsYy esjnd 42840 19119991 4 pedsns yeg SAP dis yaq SAUP ejqeo 10 god BUUSJUE Jo 1918991 4 12edsng eunzies euu lue juouyoene 189 JO ule qoJd 19q eAup 10 1981109 pue 8AUp ebeyon UBIH Jojouu Jeddajs pedsns uonipuo5 SSES t FJIONVA y9949 avi OS ANNO4 L1nvd ON 61SI1DOUYI god ASd GON eu yo sage indjno GuipesH sdiys pue 90EJIS U UDIIMS 01dQ Josuas BulpeaH sdiys x98u2 Ate inzi s euu lue JO ule qoJd Jaq eAup JO JOJOU Jeddeis 18119981 41 0 10 NSd GON 01 10J98UU09 g9d Josues dius paedsns ale ye o1e 01 BUUSJUE Seop umoplunoo ASQNV LS puooes 02 Buung We qgoud 1012euuoo JO Od dl Od NSd GOW god oido eq pinog 18109 euopei enowoy
10. SHA SLHVLS3H N3H L G33dS NI dN SdNvY ATSNONNILNOO VYNNALNV SJA Aresssao9u J evejday 6 18149840 god NSd GOW 241 JO 9 qe eoejielu JOJOIN Jeddeijs pue 1011009 JOJON Jedda s 49949 1 940v0 lIVd HOSN3S SNIQV3H dIHS 4a deyo c Med 28 Service Manual 83139 1 Ch3 Chapter 3 Fault Finding Raytheon RADAR IMAGE FAULT IDENTIFY SYSTEM FAULT No targets but video noise present See General Note at the beginning of this chapter for definition of video noise No targets and no video noise Reduced target level on any range and or poor long range performance Fault symptoms i Auto tune function not keeping good tune Radar tuning problems ii In manual tune signal a strength indicator bar varying excessively even when at best tune position Fault symptoms i Target strength cannot be equalised by STC preset adjustment ii Sea clutter or rain clutter control not working correctly STC clutter control problem aaa aaa Replace IF receiver PCB Suspect STC curve fault on IF receiver PCB D4077 1 Service Manual 83139 1 Ch3 29 Part 2 Chapter 3 Pathfinder Radar Chartplotter Series Raytheon 1 800 Aiesseoeu se eosjde UOIS01109 aGewep 10 YD8UD 7d 10 Id ye J0 98UU09 18A18981 41 0 O
11. 2 1 2 IF_ iev gt CLOSE TO U12 W BYv27 200 D30 100uH o NoFit c64 VREF2 gt 7 2 o iu zale ELO 6 JO P C69 A 10u Sei TP36 TP372 TP209 TEETE rP206 9 1 1x2 5 9 TP313 c34 TP2805 1 e F V o iu D57 R270 1 1 e S P 3 ned ov R9O 938 BAS16 Ak 10k FET INA X 6 1 nF540 3 2 our R289 6133 2 y 55 D65 STEP 5V gt C454 FB ace B 47R 10k in gl e Ee eege 10n R291 u12 TP312 y asa TP21 TP213 100K s R294 Ky BC846 2 B 1 pa 12k gt ia we dn Tv FA Fe n 2 KEE 2 gt 4 LME IF 5V IF 35v gt TP363 4 R293 R97 100uH 2k7 r1 1 46981 cea c70 C104 Q58 la E P364 R295 ene o iu D Au 10u BCB46 3 348 ac fe e MOCK gt i le 4704 E D UCC3800 trase 1 TP367 CES 47R TP24 4 Sp Boon 9 see a mE L 4 1kV TP C4175 R289 G R93 koo o EO 33n 1K s cs B 2 2 1K R96 c42 c152 R99 D66 33R 1n 1n OR1 Fs PPT ki D20 M not fitted Byv27 100 notfitted TITLE I MODULATOR PSU BOARD LOW VOLTAGE PSU ov DERIVED FROM DRAWING No ISSUE SHEET cul 4346 027 E 2 of 6 58 Service Manual 83139 1 Ch6 Chapter 6 Drawings Raytheon Modulator PSU Board High Voltage PSU
12. Ref Signal Name Function Status during standby Fault Checks CN2 1 IF 5V 5 9V power rail 6 4V to 5 6V If voltages are out of spec unstable or not to receiver present CN2 2 IF 5V 5V power rail 4 7V to 5 3V i Power off and remove modpsu to receiver disconnect IF receiver ribbon cable CN2 4 IF 26V 26V power rail 25 0V to 29 0V ii Connect a 100hm 4W resistor from 5V to receiver pin to GND CN2 6 IF 12V 12V power rail 11 2V to 12 4V iii Power up and Re check voltages to receiver iv If still out of spec then mod psu board low voltage supply is faulty replace mod psu board CN2 5 GND Isolated GND return GND CN2 7 GND from receiver power rails Service Manual 83139 1 Ch3 35 Part 2 c CH EZ G Z o Raytheon Pathfinder Radar Chartplotter Series Magnetron Interface Ref Signal Name Function Status during standby Fault Checks CN6 1 HEATER Magnetron heater 6 0 to 6 6V across If voltage out of spec not present anode power connector i Power off and disconnect magnetron at with magnetron fitted CN6 connect a 12 ohm 4W resistor across CN6 socket CN6 2 HEAT CATH Magnetron heater cathode power ii Power up and re check voltage across connector iii If still out of spec then heater supply on mod psu is faulty replace mod psu iv If OK now then magnetron is faulty Ships Heading Sensor Opto coupler Interface Ref Signal Name Fu
13. A6 S pejoeuuoosip SI ONT Jeu YDNS 8109 8U WOU gOd 49AI999J J 9A0UI9H Od 18418981 41 JO episiepun esodxe 01 J8A09 9AOW9H ONT 10 ejqeo uoqqu J9A1999J J O 20 aq 1snuu YNE4 poob Nsd GOW eunpey A6 G pue AZL god NSd GOW eu JO 8 qe sai ddns 18118981 jesseoeu se eoe deu SOUS Aununuoo J0J QUISSSE ejqeo uoqqu 0840 pue anowsy dood d18VO Guinunuoo eJojeq JUEJSISUO9 SI eJnjie ji 4oeuo 0 souin eJoAes epouu lluisue1 ejua asja 1541 ne yey ensued u ul JIYA s nuaw sonsouBeip u Wid Jeujo Aue J exo ele Ady uaym TIV4 pea K euoiseooo Aew sway AJddnsS 18118994 eu eye wjos I8UUBOS FU LA YUM 3LON ebeyon uBIH t FJINVA 6 1sijypeyo esiou OSPIA ou pue sjeGue JEPEI ON WO dwASs ajqeqoid eu ep Ate J 8dejdeu 18118981 J UO 121 A6 S JO youMS NZL UIM eq JSNU WE HOd 19 18991 A N Ajnej si god 19118901 4 ou 0 Ajddns A6 G eu jeu seleoipuj T UO UOJIMS 0 pelle seu god 19419991 4 eui uo Ajddns Az poyoums lt eu JEU se 8o pul 1IVH LE K JOAIBD91 4 eoejdeu J8AI8981 d UO YAMS AG YM neg esiou o piA ou pue sjeBie 1epe1 ON Woj dwASs qeqoid UO UOJIMS 0 pelle seu gId 19419991 J ou uo Ajddns AS p uoliws eu jeu sejeolpuj AS Ajddns 18118984 lt A6 9 Aiddns 18118984
14. R235 w c D23 e a ose E ferd r Lo m TX1 l C67 M phi 2 as Es fe E L eu E a ZE L x Ee med EE c132 _ di x3 8 8 ZE En se PPI mo a JE BE SE kio R93 zaza RIT LAT voi A in C15 c R365 N el El BE SEE 3 css e dE E e e F E E pw a R231 E m JE mn Le o Auge IN zza LE KE R179 A R295 mE Uli rare L R129 CH 86 paret 3 A ass a LI e ES a RE EN Ney R136 ps8 Red Rev gra Oe ER jm EE i m Rega SE CM1 kaa pre ere lues pi I CNG H 856 837 e D UE EZ erm R319 S18 E Si O HT3 O laga R33 8 ps DE fesso 028 TOP SIDE SURFACE MOUNT COMPONENTS TOP SIDE CONVENTIONAL COMPONENTS 2ND STAGE ASSEMBLY NOTE 10 OPTION 1 TOSHIBA MAGNETRON gt C B DETAIL RESISTOR 1206 270R 1 0 125W R309 3 RESISTOR 0 1R TW PRO SERIES R95 179 335 TRANSFORMER LOW VOLT SUPPLY X2 1 RESISTOR 1206 3R3 52 0 125W HAND FIT R127 1 RESISTOR 1206 1K5 5x 0 125W R161 3 RESISTOR VARIABLE 2K RVI 3 1 RESISTOR WIREWOUND 4R7 2 5W 10 R352 TRANSFORMER MODULATOR PULSE REV C 1X3 2 CAPACITOR RADIAL 47pF 6KV C98 186 2 RESISTOR 1206 1RO 5x 0 125W R331 351 6 CAPACITOR COG 0805 100pF 10 50V C27 76 77 83 161 176 1 RESISTOR WIREWOUND 10R 2 5W 5 R137 CONNECTOR CLAMP AWAY WAGO N 1 TOSHIBA LABEL TO REVERSE OF PCB UNDER IXI 21 RESISTOR 1206 10R 1x 0 125W R40 114 117 119 120 CAPACITOR COG 0805 220pF 10 50V C40 84 153 162 1
15. The scanner is protected from inadvertent reversal of the ships supply by FET Q56 This FET will not connect the ships supply to the board as long as its polarity is reversed When the ships supply is connected correctly the FET will switch on as the internal charge pump formed by D59 D60 etc drives the HIGATE supply to approx 12V greater then the ships supply voltage Part 2 Chapter 2 DC DC1 and Start Shutdown Circuit This is a switch mode power supply unit which derives the low voltage supplies for the receiver assembly It is configured as a flyback converter whereby the ships supply is switched at approx 72kHz across the primary of transformer Tx2 by FET Q38 Pulse width modulation PWM control is by IC U12 which senses the voltage of an internal power rail Vx and drives the FET to maintain voltage regulation With the exception of the internal supply Vx which has the ships supply as its ground reference all other output voltage rails are isolated from the ships supply and therefore must be ground referenced to the secondary side when measured note when fitted within the core assembly the secondary side ground reference is connected to the main metal casting This supply is itself powered from one of its own output rails Vx the power back winding with initial start up current from the ships supply The supply is protected from operation at inadequate ships supply voltages by the start shutdown circuit comprising of Q57 Q58 etc
16. 137 165 209 312 314 316 318 327 330 zle Wes DR EE age ELE Rika pe oan s disi 5 RESISTOR 1206 15K 5 0 125 R91 94 98 303 306 wd Blos fram GIE m ME Eu aS n 5 RESISTOR 1206 330R 5 0 125W R7 30 73 144 211 clea a m vale kle Ze Si roue 3 EL bise ce 2 RESISTOR 1206 180R 5 0 125W R17 155 R za RF a azi re raps e sa ei 2 RESISTOR 1206 220R 52 0 125W R31 334 Sates w D26 velee elg EE 2 m din 3 RESISTOR 1206 330K 52 0 125W R37 50 119 g ol puj E aie DE m t E 8 RESISTOR 1206 680R 5x 0 125W R18 89 93 106 141 217 307 308 qas S RAA Ge piej CR Room FA LL 8 RESISTOR 1206 1K8 5x 0 125W R11 51 53 55 60 74 96 215 3 gms os el fad aL SC pee 9 RESISTOR 1206 470R 5 0 125W R6 12 26 28 70 72 131 203 rag R73 R 1 RESISTOR 1206 3K9 5x 0 125W R100 CHOJES piej EE a 1 RESISTOR 1206 120R 5 0 125W R102 54 L LE 3 6 RESISTOR 1206 22R 5 0 125W R111 112 116 126 127 129 U10 us Zo 5 RESISTOR 1206 47K 5 0 125W R128 304 305 328 329 sal IE RS El 5 amp 1 a R217 0 RESISTOR 1206 470K 5 0 125W R161 csi cus EP GRA m E E 4 RESISTOR 1206 390R 5x 0 25W R25 118 130 208 2 RESISTOR 1206 47R 5 0 125W R14 21 TESS 1206 200 5 01258 li Tele TOP SIDE CONVENTIONAL COMPONENTS 32 CAPACITOR X7R 0805 1000pr 10 50V C4 6 13 15 17 21 22 32 47 52 71 82 87 89 93 103 104 123 204 207 209 210 211 214 215 217 218 223 228 1 CAPACITOR COG 0805 1 5pf 5x 50V C67 2 CAPACITOR COG 0805 12pF 5x 50V c1 90 15
17. CN4 2 STMO5 Power _ 12Vmotor CN4 1 STMO6 Analogue _ Phase B2 switch Ships Heading Sensor Opto coupler Interface Ref Signal Name Type State Function CN5 1 BZ Analogue _ Opto emitter connection CN5 2 5V Power _ 5V to Opto LED anode and collector connection CN5 3 SHGND Power _ Current limited Opto LED cathode GND connection Service Manual 83139 1 Ch2 7 Raytheon Pathfinder Radar Chartplotter Series Magnetron Interface Ref Signal Name Type State Function CN6 1 HEATER Analogue output _ Magnetron heater cathode power and signal connection CN6 2 HEAT CATH Analogue output _ Magnetron heater cathode power and signal connection Note The polarity of these two signals is immaterial The magnetron anode connection is made through the body of the device to the local GND 2 3 Modulator PSU Circuit Description Design Overview The Modulator PSU PCB integrates the modulator power supply and motor drive functions of the radar scanner assembly Part 2 N CH Q g lt o The power supply section provides regulated power to all functions within the scanner unit The modulator drives the magnetron when triggered from a simple logic input with one of three pre set pulse widths selected by the IF receiver The Motor Controller drives the stepper motor which rotates the antenna One common PCB design is used for all current Pathfinder radar systems however the build standard is changed to suit
18. 145 202 322 R16 as R H RESISTOR 1206 68K 1 0 125W R49 ja as S REE Nas os E eee UIBLE ze Fey AJ a cis nfo a R155 amp RESISTOR 1206 5K6 1x 0 125W R212 R7 gef pi o oram Y SRA 7 ez 3 RESISTOR 1206 10R 1 0 125W R210 332 338 z Re a ZEE pe Cte Ga loin 3 T 2 RESISTOR 1206 33K Ix 0 125W R162 331 FE cs m kl E fe R52 Lr S gt da 7 RESISTOR 1206 560R 1 0 125W R24 59 105 125 201 218 310 Ge ES msg la Za 3 RESISTOR 1206 6K8 Ta 0 125W R136 wie RB ou Reig Ka sew SIS SEE 7 RESISTOR 1206 100R 1 0 125W R79 97 103 216 319 321 R3 pie sl uu 818 i5 C212 le R s 4 RESISTOR 1206 ep 5x 0 125W R9 138 220 302 Ul UT Jee e cad SS Er RESISTOR 1206 ORO 0 125W R56 58 62 66 67 y lek pal pe ud 21818 le 68 69 335 337 f Ps Se c128 28 ECH e EN g Raen RESISTOR 1206 220K 5 0 125W R140 uz G ZS erch 23 12 s ETE s U13 czat 4 RESISTOR 1206 22K 5 0 125W R123 124 213 214 x STR HE R136 218 R322 5 RESISTOR 1206 4K7 5x 0 125W R71 78 90 309 311 gt Peel g Ree Ut ils B SE xw N 5 2 RESISTOR 1206 68R 5x 0 125N R23 29 s ere be SIE EE JEG e C111 n s U2 U5 HO ala n STN cx 7 RESISTOR 1206 2K2 5 0 125W R5 15 35 52 65 139 206 R89 hides 81313 j amp F 4 RESISTOR 1206 100K 5 0 125W R19 300 324 326 la us CS uzi ve ME R23 z Sz m 5 21 RESISTOR 1206 10K 1 0 125W R22 32 36 41 42 44 48 75 SE aoe ske mare GEE RSA sn kaki amp ab
19. 3 5mm PITCH C150 VARNISH ANTI TAMPER RED 3 RESISTOR 1206 2X7 5x 0 125W R293 316 317 DIODE ZENER SOT23 BZX84C12 058 3 CAPACITOR ELECTROLYTIC 470uF 10V 20 C57 61 164 2 FIBRE SCREW SEAL RESISTOR 1206 3K3 5x 0 125W R285 DIODE ZENER SOT23 BZX84C18 D50 2 CAPACITOR ELECTROLYTIC 560uF 35V 10 C36 100 2 RIVSCREW RESISTOR 1206 3K9 5x 0 125W R282 DIODE ZENER SOT23 B7X84C5V1 D51 1 DIODE RECTIFIER 11DQ10 100V 1 1A D79 LABEL POWER CONNECTOR LA 10 ESISTOR 1206 4K7 5 0 125W R76 167 185 186 195 200 7 DIODE SMB 10BQ060TR 046 49 65 69 80 2 DIODE BYV26C D23 24 262 263 210 533 0 DIODE SMB 108F20 067 68 71 1 DIODE UF5404 D40 3 RESISTOR 1206 5K6 1x 0 125W R192 329 354 11 TRANSISTOR S0123 BC846 028 30 31 33 46 54 55 58 60 62 63 1 DIODE POWER 1N5404 036 RESISTOR 1206 6K8 ix 0 125W R199 6 TRANSISTOR SOT23 BC856 029 40 48 50 52 57 1 DIODE ZENER BZVC18 D45 21 RESISTOR 1206 10K 1x 0 125W R68 70 128 149 163 236 257 2 IC LOW POWER PWM UCC3800 508 UIT 12 2 DIODE HIGH VOLTAGE SANKEN UX FOB 041 42 269 271 281 292 295 304 306 308 310 312 341 349 C ADJUSTABLE REGULATOR LM317 S08 U17 3 DIODE BYV27 200 029 30 70 2 RESISTOR 1206 12K 5 0 1256 R189 294 2 IC MONOSTABLE 7415221 014 EVER 2 TRANSISTOR POWER ISOLATED MOSFET IRF1540N 037 38 RESISTOR 1206 15K 5x 0 125W 2326 C DUAL MOSFET DRIVER MIC4427CM 508 U22 1 TRANSISTOR POWER MOSFET HEXFET IRFP350 Q42 5 RESISTOR 1206 22K 5x 0 125W R142 147 327 184 37
20. Constant current bias circuitry 5Volts VCO tune compensation Ground 60MHZIF D4056 1 Figure 3 LNC Configuration Ships Heading Sensor Ships Supply P7 LNC Display Unit Mod PSU Motor IF Receiver High voltage CN6 CN1 Ships Supply CN2 P4 Mod IF Interconnect CN4 Stepper Motor CN5 Ships Heading CN6 Magnetron P1 P7 SK1 Inter unit Interconnect LNC Interconnect Stepper Motor Magnetron Circulator Part 2 Chapter 2 4057 1 Figure 4 Scanner Interfaces Service Manual 83139 1 Ch2 5 Part 2 N CH K g lt o Raytheon Pathfinder Radar Chartplotter Series 2 2 Modulator PSU Interface Description The interfaces to the Mod PSU are shown in Figure 4 and the individual signal functions are described below Connectors Connector Function Type CN1 Ships Supply connector 4 way WAGO clamp CN2 Mod lF interconnect 18 way Picoflex ribbon connector CN4 Stepper motor connector 6 way Molex type CN5 Ships heading sensor 3 way Molex type CN6 Magnetron heater connector 2 way Molex type Ship Supply Power Input CN1 Ref Signal Name Type State Funct
21. EEPROM WRITE FAIL p This indicates there is an EEprom of the MOD PSU PCB N memory fault with IF Receiver PCB checklist 9 H See diagnostics menu description in this chapter for more details and EEPROM READ FAIL replace IF Receiver PCB T FAIL FACTORY SETUP IF TUNED I Ly This indicates there is a fault with the setup of the IF Receiver PCB or an untuned replacement PCB has been fitted Replace IF Receiver PCB The displayed value is a failure if on one or more pulse lengths it is outside CHECK the range given in the diagnostics VALUES menu description Figure 26 However MODULATOR CURRENT SP MP LP gt if the scanner software version is 1 14 then the displayed values will be incorrect the measurements can be made directly in the scanner if a fault is suspected see MOD PSU checklist 9 Modulator Control Status table MOD PSU fault suspected replace MOD PSU D4073 1 Service Manual 83139 1 Ch3 25 Pathfinder Radar Chartplotter Series Raytheon 5 Opa Po esta i weubelp yno uld 10 uonduosep ESlUU99 y jo UONJES adejaju ees 8109 y UI 1012euuo2 J8 ul ONT JP GND 0 AG WOJJ HOUS 10 Y99490 peioeuuoosip SI ONT yey uons 8109 y WOU Dd 1818981 J e oueH god 18119991 41 JO episjepun esodxe 0 18A09 SAOUISH ON7 JO 19118981 4 UO uu qoid joadsns avi OS ANNO4 SLIMV4 ON Jejdeyo SIU JO pu
22. RESISTOR 470K 1W 20 7kV R365 HEADER 18WAY MOLEX PICOFLEX o OPTION 2 NJRC MAGNETRON 138 168 175 183 228 258 297 319 320 322 338 340 358 359 CAPACITOR COG 0805 470pF 10x 50V C85 3 RESISTOR 33R 2W PRO2 SERIES R96 136 231 HEADER GWAY MOLEX KK VERTICLE 0 1 PITCH CN 1 RESISTOR 1206 10R 1 0 125W HAND FIT R127 RESISTOR 1206 22R 5x 0 125W R74 84 177 15 CAPACITOR X7R 0805 1000pF 10 50V C30 38 42 82 108 133 1 RESISTOR 100K 2W PRO2 R129 HEADER JWAY MOLEX KK VERTICLE 0 1 PITCH CNS 1 CAPACITOR RADIAL 33pF 6KV C98 186 10 RESISTOR 1206 47R 5x 0 125W R90 97 98 176 178 137 138 139 152 155 156 167 182 187 1 RESISTOR 22R 2W PRO R135 HEADER 2WAY MOLEX MI CNG 1 NJRC LABEL TO REVERSE OF PCB UNDER TXI 298 299 360 362 CAPACITOR X7R 0805 2 2nF 10x 50V C54 117 173 183 1 RESISTOR IK 2 5W 52 R366 2 INDUCTOR RN112 4 02 CMT L6 2 RESISTOR 1206 68R 5x 0 125W R39 187 3 CAPACITOR X7R 0805 4 7nF 10 50V C29 116 174 2 CAPACITOR CERAMIC DISC 100pF 1KV C114 115 1 THERMISTOR PTH9WO4BC222782 PT 9 RESISTOR 1206 100R 1 0 1256 R115 116 181 273 279 5 CAPACITOR X7R 0805 10nF 10 50V C28 147 151 157 166 1 CAPACITOR CERAMIC 220pF 100V 2 54mm PITCH C118 SCREW PAD HEAD STAINLESS STEEL 4x1 2 POZI SC 280 305 318 524 CAPACITOR X7R 0805 33nF 10 50V C175 1 CAPACITOR CERAMIC InF IKV 10x C119 WASHER M3 SINGLE COIL W 2 RESISTOR 1206 220R 5x 0 125W R248 336 38 CAPACITOR X7R 1206 100nF 20 50V C31 33 34 37 51 56 58
23. 2 Le e i vcrc ofit SOLDER PAD Pus 1 2 N EB to 100u D96 S e nofit 10BF20 5 L GND nofit TP335 ECH 1 1 MOD 12V e 9 2 CLOSE TO CN4 pas C158 2 2 2 2 NZ BZV85 C18 AR 10u DSO D84 R345 D91 D85 R346 f Z S 10BF20 OR Z S 10BF20 OR STEP T5V ZO P77 nofit nofit S 3 fa fa Byv27 1do Byv27 1do D92 D93 D94 D95 notfitted notfitted T long BAV70 BAV70 BAV70 BAV70 R14 Teao 22an z 25 Z 25 zx 25 Hk Z TP72 R341 rok 3 e TRZIB yy LL T D R 10K fe 8 R B Le J e i 1 10K i 5 R148 PAZ C109 7 4 100n STEP IO d STEP PA1 CN4 6 BROWN ak Bl eee ao NN 4 SIEL CN4 5 RED 1 TP333 10 vaut 1 e STMO3 CN4 4 BLACK 7 HS PB2 P73 PTA P75 CN4 3 YELLOW R190 TP81 e l A 12 ac ei e A e 1 SIMOS CN4 2 RED MOTOR_EN_N 1 M STMOS CN4 1 ORANGE 270A INH 1 1 1 1 1 B 1 1 R274 e B D190 D46 D101 D47 D10F pag D193 p49 R273 1 R344 Na da Ze A 10BG060 A 10800800 2 10BQ060 lt A 10BG060 1 C167 100R 1k d S 110006 110006 110606 110606 1n TP281 ane Ei nofit BE TP78 D 1u noflit nofit GND GND TRIAS CLP ela preted for stepper motor based system only TITLE MODULATOR PSU BOARD STEPPER MOTOR DRIVE DERIVED FROM DRAWING No ISSUE SHEET ps 4846 027 E 6 of 6 62 Service Manual 83139 1 Ch6 Chapter 6 Drawings Raytheon Modulator PSU Board PCB layout 2kW stepper motor
24. 5 and 3nm 3MHz 12MHz 250ns 1500 Hz gt 500mV pk pk 6nm to max range 3MHz 0 69MHz 700ns 750Hz gt 250mV pk pk Autotune Receiver The autotune receiver provides frequency selective peak detection of high level main bang transmitter pulses This is achieved using a high impedance branch from the main receiver input with a transistor diode based amplifier detector circuit Q31 Q32 D16 Q33 Q37 The detection frequency bandwidth of the autotune receiver is set at the factory using variable inductors L7 L8 and L9 The output of the receiver is buffered U6A and passed to the scanner microprocessor A tuning algorithm is then performed at the display to set the difference frequency between the magnetron and VCO Voltage Controlled Oscillator to a fixed IF frequency of 60MHz using the TUNE V control line P1 pin5 Both coarse and fine adjustment are provided by the microprocessor to allow for initial setting and subsequent fine tuning N B The variable inductor coils L7 L8 and L9 are preset at the factory They require specialist equipment for tuning and must not be adjusted by the service engineer STC Main Bang Suppression MBS The STC circuitry consists of a logarithmic function generator split into four outputs and multiplied by 4 3 2 and 2 to generate the respective R4 sea clutter and rain curves respectively These curves are offset as requested via processor operator demands and then combined to provide an output equal to the greatest
25. CAPACITOR ECE VICA100SR 10uF 20 16V C3 9 10 18 20 24 46 51 81 102 110 128 212 213 4 CAPACITOR ECE VOJA101SP 100uF 20x 6 3V C16 111 114 225 17 CAPACITOR X7R 1206 100nF 20x 50V C5 7 12 29 39 73 112 113 125 129 200 203 224 226 227 TEN 6 CAPACITOR X7R 0805 10nF 10x 50V C25 38 42 69 75 208 6 CAPACITOR COG 0805 100pF 10x 50V 23 43 85 95 219 221 1 CAPACITOR COG 0805 220pF 10x 50V C44 11 CAPACITOR COG 0805 22pF 5x 50V C45 48 50 53 55 74 80 92 94 119 120 3 CAPACITOR COG 0805 27pF 5x 50V C56 65 97 X1 2 CAPACITOR COG 0805 18pF 5 50V C2 83 3 CAPACITOR COG 0805 15pF 52 50V 063 64 220 TOP SIDE SURFACE MOUNT COMPONENTS CONTINUED 2 CAPACITOR COG 0805 470pf 10x 50 KEN 1 IC RS485 422 TRANSCEIVER DS75176 SOB U17 z m I 1 IC EEPROM ST24C01A SOB U18 J 0 IC MAX823 SOT23 5 U19 11 DIODE SOT23 BAS16 D1 3 5 11 12 16 18 22 26 28 1 IC TLASICD 508 U20 1 DIODE 50123 BAV99 D19 2 CHIP INDUCTOR 1210 10uH ELJ FATOOKF2 L1 6 Lit 1 DIODE SOT23 HSMP 3830 131 DIT 2 CHIP INDUCTOR 1210 220nH ELJ FAR22MF2 L2 3 Bi 2 DIODE 50123 BAV7O 07 8 4 SOLID CHIP INDUCTOR 1206 10uH BLM32A07 112 13 16 18 O DIODE ZENER S0T23 BZXBACTAV 032 2 CHIP INDUCTOR 1210 3 3uH NLC322522T 3R3M L15 17 1 DIODE VARACTOR S0D123 88512 D4 1 TRANSISTOR BIPOLAR MSA 1105 AR ya 4 DIODE MOSFET S0123 BF999 031 32 34 35 1 CONNECTOR 20WAY CLH T10 F D DV TR P E 10 RANSISTOR S0123 BSR18A PNP Q2 8 11 12 15 16 19 23 33 38 2 THERMISTOR 1206 2
26. CN4 5 STMO2 Vmotor 11 2V to 12 8V If voltage low or not present as i Disconnect motor connector CN4 and o connect a load of 27 ohms at least 6W rating from pin 5 or 2 to GND chassis ii Re check voltage if still bad then fault with the motor power supply on the mod psu iii If OK then motor faulty replace motor CN4 4 STMO3 Phase A1 switch See CN4 6 See CN4 6 CN4 3 STMO4 Phase B1 switch See CN4 6 See CN4 6 CN4 2 STMO5 Vmotor See CN4 5 See CN4 5 CN4 1 STMO6 Phase B2 switch See CN4 6 See CN4 6 PSU ControlStatus Ref Signal Name Function Status during standby Fault Checks CN2 14 HEATER_EN_N Enable magnetron Should be Logic Low If not Low heater modulator input in standby and i Disconnect ribbon connector at CN2 PSU and stepper transmit modes and check pin 14 on cable is low if not motor PSU then fault on IF PCB ii Check connection to CN2 is sound if OK then fault on mod psu board repair or replace Service Manual 83139 1 Ch3 37 Part 2 c A EZ 2 g lt o Raytheon Pathfinder Radar Chartplotter Series Modulator Control Status Ref Signal Name Function Status during standby Fault Checks CN2 18 RADAR_TX_EN Enable modulator magnetron This is Low during With a dummy load transmission input standby High in transmit attached to CN7 check that from IF PCB mode signal goes High in transmit mode If not faulty IF board CN2 9 PWO Selects modulator pulse width PWO PWI Chec
27. Ch5 Chapter 5 Replacement Parts Raytheon 20 x4 20 x7 Part 2 Chapter 5 20 x5 Stepper motor 12 LNC connector assembly 13 Modulator 2kW 4kW 14 IF PCB 15 Core ribbon cable 16 IF cover 18 Lower cover and insulator 20 Screw M3 8mm x23 26 Screw M3 12mm x2 12 Figure 21 18 amp 24 scanner Service Manual 83139 1 Ch5 53 Raytheon Pathfinder Radar Chartplotter Series Part 2 LO ra a G lt o 54 Service Manual 83139 1 Ch5 Chapter 6 Drawings Raytheon Chapter 6 Drawings List of drawings 18 2kW and 24 4kW Scanner Interconnections 56 Modulator PSU Board Top level kk kk kS 57 Modulator PSU Board Low Voltage PSU 58 Modulator PSU Board High Voltage PSU 59 Modulator PSU Board Modulator sssennnneeeeeeeeenneeeeeeeenennnrnressernnnnnnneeennna 60 Modulator PSU Board 3 Phase DC brushless motor drive 61 Modulator PSU Board Stepper Motor Drive 000000o0ooooooeeeeeeeeeeneennnnnennnn 62 E Modulator PSU Board PCB layout 2kW stepper motor 63 EK Modulator PSU Board PCB layout 4kW stepper motor
28. MOD_SENSE2 13 l amp woD sense srmos B A 14 SN E TUNE V HEAT EN N Bj 14 HEAT EN N STMO5 me 5 15 P41 fe evo SHP_IN eem 15 ezup IN STMO4 BI 6 16 8 5VSWITCHED OD SENSE amp MOD SENSE M NSE 1 6 18 eu NSE1 STMO3 B CNA 7 17 47 5 5v MOD_ISENSE K MOD ISENSE STMO2 B A m 18 18 A 6 RAD R_TX_EN Br RADAR_TX_EN STMO 1 BIL To STEPPER MOTOR RADOME SYSTEM 18 WAY RIBBON CABLE HEATER BL 225 MM LONG N HEAT CATH B ENB ANTENNA 18 2KW 24 4KW GND CHASSIS RECEIVER LNC S 3 TAN WAVEGUIDE MAGNE TRON MICROWAVE I P 3 CIRCULATOR 1 E3581 2KW E3571 4KW N amp GND en 4 N 8 lasowuz 1F 3 B RF_ATTENV HEATER P7 N 4BrTUNE v HEAT CATH N ES b GND N 6E B 5VSWITCHED NB BV TITLE 18 2KW and 24 4KW SCANNER INTERCONNECTIONS DERIVED FROM DRAWING No ISSUE p38532 4346 027 A 56 Service Manual 83139 1 Ch6 Chapter 6 Drawings Raytheon Modulator PSU Board Top level
29. PW4 11 IF_ 5VIN 6 12 MOTOR EN N YA gt 13 MOD SENSE2 8 14 HEAT ERN GND H1 15 ER Ge 16 MOD SENSEI p i MOD ISENSE 18 RADAR TX EN STEP_IO LOB CONTE MOTOR EN N L1 Only one of these is fitted HIGATE DC3PHMOT SCH STEPPER DRIVE CN4 x STMO1 6 MOD 12V 5 STMO2 E 4 Connector to Stepper Motor BSTEP 5V 3 STMO3 B 2 STEP FO 1 STMO4B MOTOR EN N er STM05 TITLE N STMOS B MODULATOR PSU BOARD TOP LEVEL ST BMUTESG DERIVED FROM DRAWING No ISSUE SHEET MOT SCH val 4346 027 E 1 of 6 Service Manual 83139 1 Ch6 57 Raytheon Pathfinder Radar Chartplotter Series Modulator PSU Board Low Voltage PSU TP368p304 TP317 TP149 TP362 e lt HIGATE va FA 1 3 BATT UP BATT_IN D51 HF 10 LC
30. Radome label set 1 Base including W107 24 Radome base Cable clamp Screw M4 x 16 x2 Cable gland Nylon lock nut Cable gland washer Rating label Case Seal R087 Antenna amp Rotary Joint including R088 Rotary joint sub assembly Protection cap Service Manual 83139 1 Ch5 47 Part 2 LO a G lt Raytheon Pathfinder Radar Chartplotter Series Radar Core Assembly When ordering spares quote Spare Description prefixed by Radar for items 4 to 16 and the Part No The Item numbers refer to Figures 20 and 21 18 and 24 Scanner Unit Item Spare Description Part No Comment Core Seals including R089 5 1 Core Seal 5 2 O Ring x4 5 3 Foot seal x4 Also item 19 Magnetron 2kW Toshiba including RO90 6 1 Magnetron 2kW 6 2 Rubber boot Connector housing Terminal x2 Sleeve 175mm Cable screen Magnetron 2kW NJRC including R58006 6 1 Magnetron 2kW 6 2 Rubber boot Connector housing Terminal x2 Sleeve 175mm Cable screen Magnetron 4kW Assy including R091 6 1 Magnetron 4kW 6 2 Rubber boot Connector housing Terminal x2 Sleeve 175mm Cable screen Circulator R094 Stepper motor including R095 Stepper Motor Terminal x6 Connector housing Drive pulley Sleeving 180mm 9 Drive belt R096 10 Opto PCB assembly including R104 Opto PCB amp cable assembly Cable tie 11 LNC PCB Assy including R101 Receiver LNC PCB Receiver RAM LNC scre
31. TP180 Sen 837 D23 1 BAV99 e A R84 IRF540 gt or e 2 P i DANGER ag 1 aan 1 la R171 Byv26c B Cube ei EE ae rs HIGH VOLTAGE T ER 1u n 1u 79 TP178 220b TP235 gt lt 100p P239 3Q30 G A 9 eke e N 3 GAZA D24 SCHEER aa ERE 4n7 oein pa 2 p 1 E 1 R173 Byv2 Gas R275 TP176 TP192 4 R174 CALE ya op T R336220R RAZ a 4KW only tp234 R 004 amp 42 amp sk oniy TP17A4 TP339 TP342 R86 fe 7 2K2 GND 1 E30 1 1 1 D16 BAX12A c182 C29 1n e 1 680R nofit 5 5 1 TP228 t i 1 3 R339TP246 TP226 R69 R70 Ass 4n7 R74 MCE C40 TH191 e 1 19s R73 1 470u 1 2 12 31llCa R28 1 TP223 4708 470R gen 220p R85 CT1 33R 6 TPTY 10R D7810BF20 4 L ji nofi nofit nofit 43 MOD 8 3v gt t ov R337 R335 D81 ov OR27 OR1 10BQ060 1W f R318 nofit Mod Isense Power A IF 5 1008 TR 340 10BQ060 ca 2kw 10R 1u TP250 akw 22R 1 2 R181 mm 6kW ean vx TP344 6V3 1998 MOD ov gt TP251 C6S l a R376 R182 T 4K7 TP308 R147 22K M 470R 1 R183 o iu 470u 22K 3 Jon TP252 poet iv gt OP3 lt NE 10120 d see table R261 Yow c a GND TP345 TP349 l 2 BZXBACSV1 1 6 1 HEAT EN N e 1 M BC846 ov does pout i D55 1 4 gt ean U26 TL431CO MOD_ISENSE gt P5 1 TP249 N 1 1 WK ov mE TP225 2 SEND P184 eti TP346 z 4 BAV70 TP248 ASE w END ov 10R WIRE LOOP lt HEATER_OK TP370 P300 P350 R332 1K ka Ein TITLE vec ve a73 MODULATOR PSU BOARD HIGH
32. This circuit will shut the supply down if the ships supply falls below the minimum scanner operating voltage of 8 7V This supply is configured as the master supply and therefore it must be running before the high voltage supply DC DC2 will function Thus a fault in this unit is likely to shutdown the high voltage supply Scanner operating supply voltage range Parameter Units Min Max Conditions Input Voltage Range V 8 7 32 0 Measured at PCB input terminals Reverse polarity leakage current uA 0 100 Continuous ignoring any initial transient Max Leakage current between uA 0 HA Measured with 32 0V differential imposed between isolated secondary GND and ships BATT_IN and isolated GND BATT_IN CN1 1 4 Service Manual 83139 1 Ch2 9 Part 2 N CH K be lt o Raytheon Pathfinder Radar Chartplotter Series Output Specification DC DC1 Parameter Units Min Nom Max Conditions IF 5V output voltage V 5 6 6 0 6 4 IF 5V load mA 0 125 Load will be reduced to minimum during standby state of IF receiver IF 5V output voltage V 4 7 5 0 5 3 IF 5V load mA 50 350 Load will be reduced to minimum during standby state of IF receiver IF 12V output voltage V 11 2 12 0 12 4 IF 12V load mA 0 300 Load will be reduced to minimum during standby state of IF receiver IF 26V output voltage V 25 0 27 0 29 0 IF 26V load mA 1 2 DC DC2 The operation of this switch mode
33. VOLTAGE PSU VX 1R DERIVED FROM DRAWING No ISSUE SHEET IF BV gt 3862 3 4346 027 E 3 of 6 Service Manual 83139 1 Ch6 59 Raytheon Pathfinder Radar Chartplotter Series Modulator PSU Board Modulator TP125 Pulse Width Adjust Gs evel Power R160 R191 C83 R161 R192 c84 B162 A193 ces MOD 300V DANGER HIGH VOLTAGE 1 I R117 2kW 680R NF 100p 1K5 5K6 220p 2K2 2K2 470p 1 t 4kW 680R NF 100p 2K2 2K7 220p 2K2 NF 470p 10R R137 TP158 HEATER CN6 1 R142 6kW 1K NF 220p 1K8 NF 220p 2K2 NF 470p 10R ai HEATER gt SS TP154 3 C185 AJE 109n HEATER CATHODE CN6 2 C78 TX3 de 4 HEAT CATH gt 1 3030 138 IssB N 1 e9TP18 EE R 2 D42 je t R136 UX FOB 1 cad TP32 C179 res 4 7100 33R 4 1 Note 1 Components in Box fitted on 6 amp 10KW only see table I _ R374 c92 PRO2 P4 o PI
34. a 250ns Pw z SEG 1 Power C98 c185 R127 con c186 R127 adjus 1 Bzx84d18 5 u22 3 an aner 47pF 383 33pF NF on 1 RV2 c79L R ek POT cae c87 akw 33pF NF 3R3 33pF NF 3R3 Olt T Zi ale lec4427 4 5V 1 AE o iu Note C98 C186 must be ceramic Class I dielectric types 6kV rated S TPPB8 Note C179 must be WIMA FKP1 or Phillips 376 polyprop type Note R202 R164 R132 R133 are 1210 types foe T7 Alpe GND A seq table TP183 a CEM R277 CEA 3 vs see table LOCATED AT U22 ME 2 TP1 E Bit 1 e P 1344 ee PTC1 p 1Q50 4 fat R St dei T1P315 e E sYa 3 e r T FET INA TP137 TP136 TP277 e e U21A BC856 R307 4 REXT CEXT 1 t5V 1 470R eise TP TP170 10K n 1d a 7415221 o 13 TOT TP28 C110 1 1 1 2 2 oe a emne Ee R1282 R375 R115 S a 3 J U30A 2 Zo An m Fl 4x P168 R311 ede 2 moggak 0 qou S roK NoFit PWO B 7 10K 1 4 R186 100R I BV 1 i T 1 C17 k 74HC14 1 GND 14 4K7 C76 74HC02 13 13 12 100p P134 12 U300 Le OSA 5v 1 Z 4 GN 3 1 74HC02 k 74HC14 700ns PW adjust DV 4 T 1 KAV3 TP279 HF 4 SK POT 3 12950 4 1 fixing hole i R193 ki EE 1 see table 74HC14 HF 5 fixing hole 2 Q47 3942 TP139 GND GNO IRF740 IRF740 l GND HF 9 Pili cr ag 1 He R278 fixing hole 5V 1 1k CEXT 4 TPL44 see table TP140 TP141 TP278 TP138 U218 AA ce R306 4 4 REXT CEXT 1 YA _ TP316 Option instead of 042 for entry level t9k 9d a 74LS221 a 5 ki R116 2 191 B Modulato
35. each individual scanner unit to provide optimum performance and a good starting value when the Radar system is first operated However the VCO tuning range zero offset and Azimuth zero offset used working values are adjustable from the display during Radar operation Due to temperature variations affecting the LNC the VCO tuning values are adjusted by the display when Auto mode is selected to give optimum tuning The present optimum value is stored when a range change i e transmit pulse length change is made so that when the range is selected again the auto tune function is at a better starting point Normally this adjustment is made just to the fine tune value for each pulse length Occasionally a change in coarse tune may be necessary If tuning problems occur the Tune Preset function in the Advanced Settings Menu provides a manual way of adjusting the coarse tune used working value Part 2 Chapter 2 The Range Zero Offset is adjusted manually from the display Advanced Settings Menu Display Timing as part of the normal Radar installation procedure If the inter unit cable is kept to the supplied length the Display Timing should not normally need adjusting STC preset maximum is set at the factory however the STC preset value can also be changed via the Advanced Settings Menu When a Factory Reset is performed press MENU select SYSTEM SET UP the press and hold MENU for 5 second countdown the scanner copies the Factory set va
36. of the inputs A curve splitter and linearisation circuits are used to match the output control levels to the characteristics of each attenuator Service Manual 83139 1 Ch2 15 Part 2 N CH kum Q lt o Raytheon Pathfinder Radar Chartplotter Series General STC Characteristics MBS Curve amplitude STC R decay variations Decreasing Attenuation Sea clutter R decay Rain clutter R decay Fixed gain Combined curve generated as an output equal to the greatest of the inputs Time gt D4066 1 Figure 14 General STC Characteristics Main bang suppression amplitude and duration controls are configured so as to override these STC controls For low values of attenuation the attenuation is applied to the Monolithic amplifiers in order to preserve system noise figure At higher values of attenuation the attenuation is divided between the IF pin attenuator D17 used to control the first IF amplifier stage and the Monolithic amplifiers Microcontroller The microcontroller subsystem using an NEC 78054 device is integrated onto the IF receiver board and provides the following functions e Generates analogue control voltages via a multi channel Digital to Analogue Connector DAC for all user and automated scanner adjustments Reads the tune indicator input and adjusts tune control voltage as necessary Controls modulator pulse width selection Generates stepp
37. power supply is very similar to DC DC1 This supply generates the magnetron heater supply the modulator high voltage supply 200 300V and the 12V supply for the stepper motor As for DC DC1 a PWM control IC U11 regulates the switching of a FET Q37 which switches the ships supply across the primary of transformer Tx1 U26 and associated components provide voltage feedback from the magnetron heater voltage rail The high voltage modulator supply rail comprises of a number of series connected secondaries The PWM controller switches in synchronisation with DC DC1 at approximately 72kHz This supply is a slave to DC DC1 and will shutdown with DC DC1 This supply is switched on by a low state on the the control signal HEATER EN N CN2 12 In normal operation this supply is disabled only when the radar is switched to standby mode Note This supply requires that a magnetron heater load or a 12 ohm 4W resistor is connected at CNG in order to function correctly if the supply is operated with no connection at CN6 no damage will occur but the supply voltages may be found to be out of specification Also see Stepper Motor Controller Output Specification DC DC2 Parameter Units Min Nom Max Conditions MOD 6 3V output voltage V 6 0 6 3 6 6 Measured as differential voltage at CN6 MOD 6 3V load mA 430 650 MOD 300V output voltage V 196 210 224 2kW systems MOD 300V load mA 0 25 2kW systems MOD 300V output volta
38. transmit mode in standby mode to save power 5V Analogue Output 5 9V nom The 5 9V supply for the LNC 5V GND RF_ATTENV GND 5V TUNE_V N C 60MHzIF D4065 1 Figure 13 LNC Connector P1 connections as viewed from component side of board Mod IF Interconnect P4 This connector P4 is pin to pin identical to CN2 connector on the MOD PSU PCB See MOD PSU interface section for details 2 5 IF Receiver Circuit Description Main Receiver The prime function of the IF receiver is to provide low noise amplification and logarithmic detection of the 60MHz IF Intermediate Frequency Radar received signal to give a video signal output suitable for displaying on the Radar screen after digital processing at the display The receiver provides low noise amplification dynamic IF gain control STC and selectable IF bandwidths to optimise target detection for all ranges and for various sea and weather conditions The following summarises the functions of the circuitry A low noise amplifier AR1 is situated prior to an adjustable gain monolithic microwave integrated circuit MMIC amplifier stage U9 and U10 in order to define the noise figure of the system This incorporates the relevant circuitry to provide fast gain control via the STC generator General amplification and attenuation control is also provided by the cascaded MMIC amplifiers U9 and U10 in conjunction with factory tuned inductors L4 L10 and L11 and capacit
39. widths and PRI rates 15 Autotune Receiver sise 15 STC Main Bang Suppression MBS E keke 15 le ee une 16 Initial Scanner set up EEprom stored values 16 2 6 Antenna Rotary Joint Assembly neeeeeeneeneeeeeeeenennrreeennnnnrnnssernnnnnseeeennne 17 2 7 Scanner Display Connection 18 Chapter 3 Fault Finding sivik ka 19 91 Safely NS aie s Le 19 3 2 General NOS uuu uuu lb KEL be Han eeh uit kipa eiat EE 19 3 3 Built in Testing Diagnostics sio AE WE oca CU HR RR ER REN ER HR du 20 3 4 Master and Repeater LCD Displays 20 GES pie ED M a 21 ae qi EA M ae E N ek ST E RAE 21 Scanner Not Responding message displayed or Start up countdown restarts UNGA oan fen eet ah azi kadeya any A kok po kane AR 21 Extertial Checks Ana Naa a n AOR RAA wi 21 Display Circuit Operation eesesenneeeeeeeennetrnteeeeetnnrnrrrsernnnnnnnrerrennn nn 22 Display Internal ei EE 22 Display Check 1 Display has no power at scanner plug at rear of display EE EE PA 22 Display Check 2 Display communications check 23 Display Check 3 Display countdown restarts unexpectedly 23 Scanner Internal C
40. 1 CAPACITOR RADIAL 4 7nF 400V 10mm PITCH C43 2 SLEEVING SILICONE RUBBER Imm DIA BLK 2x25mm LONG SL1 2 1 RESISTOR 1206 330R 5 0 125W R357 62 65 68 74 78 80 87 88 92 109 120 121 125 128 129 134 136 149 171 172 184 185 1 CAPACITOR POLYPROPYLENE RADIAL 4 7nF 2kV C179 WIRE LINK C47 ML 8 RESISTOR 1206 470R 5x 0 125W R72 73 166 144 182 2 CAPACITOR TANTA luf 10 16V C154 165 2 CAPACITOR CERAMIC DISC 2 2nF 1KV C45 112 WIRE LOOP TPT 190 265 284 3 CAPACITOR ELEC 4 7uF 20 25V 86 95 146 2 CAPACITOR POLYESTER 100nF 250V 10 C48 49 SIL PAD 19x25 1 RESISTOR 1206 510R 1x 0 125W R256 5 CAPACITOR ECE VICA100SR 10uF 20x 16V C101 103 104 110 122 1 CAPACITOR POLYESTER 100nF 400V 10 C67 HEATSINK FE HTS RESISTOR 1206 680R 5x 0 125W R86 160 368 372 CAPACITOR AL ELEC 1uF 20x 50V c10 1 CAPACITOR MKP10 1uF 400V C177 HEATSINK SW25 4 HT 16 RESISTOR 1206 1K 1x 0 125W R69 71 93 110 148 DIODE ZENER SOT23 BZX84C15 099 3 CAPACITOR ELECTROLYTIC 10uF 60V 80 20 C59 148 168 1 HEATSINK REDPOINT PTF750 HT4 226 261 274 276 278 289 296 330 332 348 5 DIODE SOT23 BASI6 057 61 63 77 1 CAPACITOR ELECTROLYTIC 68uF 400V 20 C90 1 HEATSINK RETAINER CLIP 5901 HC RESISTOR 1210 IRO 5x 0 5W R132 135 164 202 8 DIODE SOT23 BAV7O 055 59 60 64 92 95 4 CAPACITOR ELECTROLYTIC 100uf 35V C46 53 60 132 VARISTOR METAL OXIDE V39ZA1 vo ESISTOR 1206 2K2 5 0 1298 R104 109 162 171 174 193 DIODE S0723 BAV99 D97 1 CAPACITOR ELECTROLYTIC 220uf 25V 20
41. 181 273 279 5 CAPACITOR X7R 0805 10nF 10 50V 28 147 151 157 166 RESISTOR WIREWOUND 10R 2 5W 52 R137 TRANSISTOR ISOWATT MOSFET STP60NOSF I Q56 280 305 318 324 1 CAPACITOR X7R 0805 33nF 10 50V C175 RESISTOR 100K 2W PRO2 R129 C STEPPER MOTOR DRIVE UC3517N DIL16 U24 1 ESISTOR 1206 330R 5 0 125W R357 38 CAPACITOR X7R 1206 100nF 20 50V C31 33 34 37 51 56 58 3 RESISTOR 33R 2W PRO2 SERIES R96 136 231 CHOKE 10uH 10A L2 2 RESISTOR 1206 220R 5 0 125W R248 336 62 65 68 74 78 80 87 88 92 109 120 121 125 128 129 134 136 149 171 172 184 185 RESISTOR 22R 2W PRO2 R135 5 CHOKE 100uH 5mm PITCH L3 9 10 RESISTOR 1206 470R 5 0 125W R72 73 144 166 182 2 CAPACITOR TANTA luF 10 16V C154 165 RESISTOR 470K 1W 20 7kV R365 3 DUCTOR FERRITE BEAD BLOTRN1A62 FB1 F1 2 190 265 284 4 CAPACITOR ELEC 4 7uF 20 25V C86 95 146 RESISTOR 1K 2 5W 5 R366 TRANSFORMER T300V REV 8 TX1 1 RESISTOR 1206 510R 1 0 125W R256 5 CAPACITOR ECE VICA100SR 10uF 20z 16V C101 103 104 110 122 2 CAPACITOR CERAMIC DISC 2 2nF 1KV C45 112 TRANSFORMER LOW VOLT SUPPLY TX2 RESISTOR 1206 680R 5 0 125W R86 160 372 5 CAPACITOR RADIAL 33pF 6KV 10mm PITCH C98 TRANSFORMER MODULATOR PULSE REV C TX3 RESISTOR 1206 1K 1 0 125W R69 71 93 110 148 1 CAPACITOR AL ELEC luf 20 50V C102 2 CAPACITOR CERAMIC DISC 100pF 1KV C113 114 CONNECTOR CLAMP 4WAY WAGO CN1 261 274 276 278 289 296 330 332 348 369 5 DIODE SOT23 BAS16 D57 61 63 77 CAPACITOR CERAMIC 220pF 100V 2 54mm PITCH C118 HEADER 18WAY MOLE
42. 2 Technical Description Raytheon 1 Frequency 10us 0 5us PRI_PLS D4059 1 Figure 5 Modulator clock format PRI PLS Motor Control Ref Signal Name Type State Function CN2 12 MOTOR_EN_N Logic input 0 Enable Motor either Stepper or 3 phase 1 Disable Motor CN2 10 STEP 10 Logic input output clock For stepper motor build standard input at 181 Hz 50 a duty cycle Determines stepper motor speed a 5 For all build standards this line acts to identify the type 5 a of build standard in conjunction with the a 8 MOTOR EN N control as follows 5 When MOTOR EN N 1 motor off STEP IO 1 for stepper motor build standard Ships Heading Interface Ref Signal Name Type State Function CN2 15 SHP IN Logic output clock Neg going edge Indicates antenna position is at nominal zero azimuth Receiver Power Supply Ref Signal Name Type State Function CN2 1 IF 5V Power 5V power rail to receiver CN2 2 IF 5V Power 5V power rail to receiver CN2 4 IF 26V Power _ 26V power rail to receiver CN2 6 IF 12V Power 12V power rail to receiver CN2 5 GND Power _ Isolated GND return from receiver power rails CN2 7 GND Stepper Motor Interface Ref Signal Name Type State Function CN4 6 STMO1 Analogue _ Phase A2 switch CN4 5 STMO2 Power _ 12Vmotor CN4 4 STMO3 Analogue _ Phase A1 switch CN4 3 STMO4 Analogue _ Phase B1 switch
43. 2 18 and 24 Scanner Units replacement of parts The following notes supplement the exploded view drawings to assist with access to or replacement of Parts WARNING The scanner unit contains high voltages Before removing the cover switch off the radar and isolate the power source Refer to the scanner units Spare Parts List and the exploded view drawings Figures 20 and 21 Replacement of scanner unit parts fall into two categories Category A Can be accessed with the scanner installed Top cover Case Seal Antenna amp Rotary Joint Magnetron 2kW or 4kW Circulator Drive Belt LNC PCB Assembly Drain Tube Lanyard Radar Cable Connector Receiver Cover and Seal 9 N 9 h E O N Service Manual 83139 1 Ch5 49 Part 2 LO ra a G lt o Raytheon Pathfinder Radar Chartplotter Series Category B Requires the removal of the scanner so that the Core can be separated from the Radome Base 1 Radome Base Core 18 amp 24 Stepper Motor Opto PCB Assembly LNC Connector Assembly Modulator PCB 2kW or 4kW IF PCB Core Ribbon Cable IF Cover 0 Lower Cover and Insulator Oo NDO 101 P CD N Removal of these items requires actions both inside and outside the core Note Fitting and seal kits have been omitted from the above lists Category A 1 Top Cover When refitting the top cover do not over tighten the 4 securing screws 6 Ib in or 0 7 Nm 2 Case Seal Alw
44. 36 E R365 Reg E E e sse R275 i R231 a ER lt SINEN E R335 j 3 8 pey p63 m nm L2 cigg gt EI ke e d ud R179 a pes Ress ke luu EJlesq bsg 3 Rae d RI 8 sse cegl gt 059 n Ex e R323 cha R136 ES Reg RBY 0P3 cie cs 70 m El Ez 7 f Cat Di2 sr 27 g E Slaed psi S CHE 3 33 u 956 837 SIE Em O HT3 O a GES DE u25 Rue D OP SIDE SURFACE MOUNT COMPONENTS 1 P C B DETAIL 1 RESISTOR 1206 270R 1 0 125W R309 3 RESISTOR 1210 0 47R _z 0 25W R132 133 164 3 RESISTOR VARIABLE 2K RV1 3 2 RESISTOR 1206 1R0 5 0 125W R331 351 6 CAPACITOR COG 0805 100pF 10 50V 27 76 77 83 161 176 20 RESISTOR 1206 10R 1 0 125W R40 114 117 119 120 138 4 CAPACITOR COG 0805 220pF 10 50V C40 84 153 162 168 175 183 228 258 297 319 320 322 338 340 358 359 1 CAPACITOR COG 0805 470pF 10 SOV C85 4 RESISTOR 1206 22R 5 0 125W R74 84 177 321 15 CAPACITOR X7R 0805 1000pF 10 50V C30 38 42 82 108 133 0 RESISTOR 1206 47R 5 0 125W R90 97 98 176 178 137 138 139 152 155 156 167 182 187 OP SIDE CONVENTIONAL COMPONENTS 298 299 360 362 4 CAPACITOR X7R 0805 2 2nF 10 50V C54 117 173 183 3 RESISTOR 0 1R 1W PRO1 SERIES R95 179 335 2 TRANSISTOR POWER ISOLATED MOSFET IRF1540N Q37 38 2 RESISTOR 1206 68R 5 0 125W R39 187 3 CAPACITOR X7R 0805 4 7nF 10 50V C29 116 174 1 RESISTOR WIREWOUND 4R7 2 5W 10 R352 TRANSISTOR POWER MOSFET HEXFET IRFP350 Q42 9 RESISTOR 1206 100R 1 0 125W R115 116
45. 5 ohms scanner tous Eve n approximately 1 2ms AZ SHP OUTB D4061 1 10us 0 5us approximately 1 2ms AZ_SHP_OUT D4062 1 Figure 10 AZ_SHP_OUT AZIM_DPOS 10us 0 5us 1 P R Frequency PRI OUT TD Ep Se ml ai Naa won s e a n je REDE raet ege 0 0 5V D4063 1 Figure 11 PRI OUT PRI DPOS 1 P R Frequenc 10us 0 5us n ENN SE ESP ENES Be EEE Si fe Sree ee jag c m e p Snes E 3 5V PRI OUTB TB 0 0 5V D4064 1 Figure 12 PRI OUTB PRI DNEG Service Manual 83139 1 Ch2 13 N N 5 S U as o Raytheon Pathfinder Radar Chartplotter Series LNC Connector P1 Ref Signal Name Type State Function P1 1 GND 60MHz Intermediate N A The down converted received radar signal P1 2 60MHz IF Frequency IF from the LNG at 60MHz carrier frequency Radar received signal input P1 3 Not Connected N A N A N A P1 4 RF ATTENV Analogue control 0 10V A control voltage to apply RF attenuation to voltage output the LNC limiter diodes This function is not used by SL72 and SL74 systems TUNE_V Analogue control 4 24V A control voltage that is applied to the LNC voltage output VCO Voltage Controlled Oscillator to maintain the tuning of the IF input to GOMHZ GND Analogue output OV Analogue ground reference for the LNC supplies 5V Analogue Output OV in standby mode The 5v supply for the LNC It is switched off switchable 5V in
46. 6 C DUAL OPAMP LM358M SOB U23 1 TRANSISTOR ISOMATT MOSFET STPGONOSF 056 TITLE 2 RESISTOR 1206 33K 1 0 125W R196 283 C TL431CD S08 U26 1 IC STEPPER MOTOR DRIVE UC3517N DIL16 U24 5 RESISTOR 1206 47K 5 0 125W R180 194 272 328 344 C HEX INVERTER MM74HC14M S014 U29 1 CHOKE 10uH 10A L2 MODULATOR PSU BOARD 6 SISTOR 1206 100K 5x 0 125W RBB 188 235 291 325 334 C QUAD NOR GATE 74HC02 S014 U30 3 CHOKE 100uH 5mm PITO 13 9 10 PCB LAYOUT 2kW STEPPER MOTOR 2 RESISTOR 1206 220K 5 0 1256 R197 323 2 IC OPTO ISOLATOR PC357 0P3 5 3 INDUCTOR FERRITE BEAD BLOIRN1A62 FB1 F1 2 3 RESISTOR 1206 ORO 0 125W R345 346 367 1 TRANSFORMER T300V REV B MI DERIVED FROM DRAWING No ISSUE SHEET paves 4346 017 V 1 of 1 Service Manual 83139 1 Ch6 63 Raytheon Pathfinder Radar Chartplotter Series Modulator PSU Board PCB layout 4kW stepper motor
47. Absorbent Material is fitted and intact in centre of underside of LNC cover replace cover if necessary 5 That the gasket fitted between circulator and core at the antenna waveguide port is intact replace if necessary 6 That the circular conductive gasket fitted on the underside of the LNC pin is fitted and intact replace if necessary 7 That the L shaped piece of RAM fitted to the core in the IF receiver cavity is fitted and intact replace if necessary Problem is likely to be pulling of the VCO in the LNC due to stray energy from the antenna Part 2 Chapter 3 STILL PROBLEMS Replace LNC D4081 1 Service Manual 83139 1 Ch3 33 Part 2 CH 2 2 G Z o Raytheon Pathfinder Radar Chartplotter Series Check List 9 MOD PSU PCB General Information To allow access to the MOD PSU interface connections in this checklist the following procedure should be used e Turn off the display Disconnect interunit cable at display e Disconnect cable at the Radome and remove Radome to appropriate dry working area or preferably a workshop e Remove core assembly from Radome base N B Circular foam seals around core feet will need replacing on reassembly to ensure watertight seal see general notes at the beginning of this chapter e Remove magnetron connetor CN6 to ensure tramsmission is entirely disabled e Invert unit carefully supporting antenna and remove ba
48. CB To disconnect the opto PCB cable remove the lower cover and insulator see 13 below and the modulator PCB 11 LNC Connector First remove the antenna amp rotary joint see 3 on page 50 the receiver cover and seal and the LNC PCB assembly see 6 on page 50 Next remove the lower cover and insulator see 13 below modulator PCB IF cover and IF PCB 12 IF PCB If anew IF PCB is fitted then the Bearing Alignment and Advanced Settings should be checked and adjusted as necessary as detailed in the Owner s Handbook section 5 5 and 6 9 13 Lower Cover and Insulator When refitting the lower cover to the core ensure that the insulated section is placed over the high voltage part of the modulator PCB Service Manual 83139 1 Ch5 51 Raytheon Pathfinder Radar Chartplotter Series 1 Base 6 1 Magnetron 2kW 4kW 2 Case seal 6 2 Rubber boot 3 7 Circulator 5 1 8 Stepper motor 5 2 9 Drive belt 5 3 10 Opto PCB assembly 11 LNC PCB assembly 12 LNC connector assembly 17 Receiver cover and seal 20 Screw M3 8mm x8 21 Screw M4 8mm x15 22 Washer x6 23 Screw M3 16mm x5 Screw M4 16mm x4 Washer spring x4 Screw M3 12mm x1 23 x5 20 x4 Part 2 Chapter 5 Po 24 x4 25 x4 22 x4 52 53 54 D3857 1 Figure 20 18 amp 24 scanner 52 Service Manual 83139 1
49. F TUNED MODULATOR CURRENT SP MODULATOR CURRENT MP MODULATOR CURRENT LP ROTATION TIME STC PRESET MAX In general the status is updated each time that the menu is selected such that the latest status is shown where appropriate In the description below the timing of when the items are monitored is given Service Manual 83139 1 Ch3 39 Part 2 Chapter 3 Part 2 c EZ 2 g lt o Raytheon Pathfinder Radar Chartplotter Series 1 SCANNER BUILD STD This item indicates the build standard of the Radar scanner radome that the display is connected to Itis in effect a serial number that allows Raytheon to determine the Date of manufacture and exact hardware build standard of the unit It should be quoted on all Fault Feedback Forms returned to Raytheon This item is stored in the EEprom of the IF receiver PCB in the scanner it is read from the scanner once only at power up 2 SCANNER SW VERSION This item indicates the software version number of the microcontroller on the IF receiver PCB in the scanner This item is stored in the EEprom of the IF receiver PCB in the scanner it is read from the scanner once only at power up 3 ESN Display Electronic Serial Number This item indicates the build standard of the Radar display unit It is in effect a serial number that allows Raytheon to determine the Date of manufacture and exact hardware build standard of the unit It should be quoted on all Fault Feedback Forms re
50. HEEKS asian 23 Scanner Check 1 scanner communications checklist 23 Scanner Check 2 scanner power checklist 23 Re c TM PEU A 24 Radar Target Image blank faulty missing radar targets no radar scan poor performance etC auc 24 IS sz qaz CaS BRAN MIN SR DR BA thd nda deca ne CA 24 i e qE ND rm 34 MOD PSU PCG acorns dp kg sey xe pe diana letus vetu koc QU FD ES 34 General Information ssec apa tap Os B ra Dd c cR qom Soa qox Pa RAYS 34 Magnetron Dummy Loan 34 Ship Supply Power MPU oec io ia sika razana ka a ni n kab ape a a e 35 Receiver Power Supply Output ss 35 Magnetron Interface AEN 36 Ships Heading Sensor Opto coupler Interface 36 iv Service Manual 83139 1 TC Contents Raytheon Ships Heading OUIDUEL coo ae kt a nr ME ne 36 Stepper Motor Control ek s te a A AL lem en n 36 Stepper Motor Interfaces nn a Por eo roe E ea nes 37 PSU Control SIGIUS uczta waka ante qu kat pf 37 Modulator Control Status dedii een RE e RE cnt RA 38 3 6 Diagnostics Menu detailed description 39 Chapter 4 Setting up Procedures rrrnnsnnvvnnnnnnnnnnnnnnnvnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnr 45 4 1 Fitting of Replacement IF Receiver PCB 45 4 2 Fitting of Replacement Ma
51. IF Receiver Top level 5v L18 TP255 NN 1 9600 Li I e L 1206 c207 in LNC Connector GND 5VIN L17 BV P1 3u3 l TP256 GND 4 11 i Amon 1 GOMHZIE gt 12 9600 L13 NZC1 3 13 L1210 L 5VSWITCHED RE_ATTENY 3 13 c206 T TUNE 5 15 ti 26V GND 2 15 L16 TP257 GND 1 8 18 fe eege e 9 19 9600 LI 10 20 L1206 ako Gaon T fn TTP15 L15 EVEN i TP230 e d L 12VI GND GND 303 TP258 1 Le 9600 L13 42 SIE c204 TP1 in e Co hn 1 N 1P249 1P248 VERS TP227 GND Q 3 e e 1 e T e CONTROL INTERFACE t IF STRIPS IF DET VIDEO Le U L L B6OMHZIF PA FIC level BFTC level TUNEV BY o 1 LOGIN BI BL OG IN 2 3 HEATER OK BE atten eer atten RF_ATTENV BL 4 5 LGND 8 zi BWselO Bsksel0 7 VIDEO B VIDEO 8 SKO PLS IFBWBI BI FBW TUNIND BF 10 STEP ID Buselt Bayselt 11 Pu 12 MOTOR EN N 13 Mop SENEC TUNE_C_____Jj TUNE C VIDBW B BIFSTC BP VIDBW 14 HE 15 HP IN 16 Man SENSEA KAN SVREF JUNE Fs TUNE F FTCV BY GAI
52. IJFJOUVLON Service Manual 83139 1 Ch3 31 Pathfinder Radar Chartplotter Series Raytheon 108070 ON1 89B dsH ne Joy WU ONT 198dsns poserdai eq pinous JOye NOJIO eui eseo SIY U SINDJO ALINY TILLS eBe3 0A VEH Seoeyns EU BU JO UOISOJ100 HAONVA ensse0xe ji opeJBep ABW JOJejnou1o eui JO eoueuuoped eu 1ou 1ole no1iO uono dsul BUJ8 UI J0J JO e DOJI0 9A0UJ9J QN uoisoJ400 eDeurep 10 J0je noJio pue A qwesse julof Aejoi BUUSJUE uojed pedsuj 6 ISIHO8 UD god NSd GOW eu yo se qe IndinO Alddns Jemoq 18118994 pue SNJEIS 01109 1O EJNPOIN 49840 Ulejqoud Jojejnouio BUUSJUE 10 uoreubeu jopejnpoui ONT u UMOJQ Jeu pedsns uoneuben eoejdeu ine uoneubeN joodsns HVd OS aNnod LINVY4 ON FONVANYOJYId 39NVH DNO 1 HOOd HO GNV T3A31 LADYVL GAONQHH 4a deyo c Hed 32 Service Manual 83139 1 Ch3 Chapter 3 Fault Finding Raytheon RADAR TUNING PROBLEMS ks Check all of the following 1 The fixing screws for the LNC LNC cover circulator and magnetron are tight 2 If the unit is a 24 radome then check that screening can around cable interface on the outside of the core is in place and secure 3 Remove antenna assembly from core and check that the central pin that protrudes from the rotary joint is not bent or damaged if damaged replace antenna assembly 4 Check that the black foam RAM Radio
53. K5 10 R 1 RESISTOR TRIMMER IK R99 16 RANSISTOR S0T23 FMMT3904CTR ND ZETEX 01 3 7 9 10 13 14 18 21 22 36 37 43 OP SIDE CONVENTIONAL COMPONENTS 2 RANSISTOR POWER MOSFET 2SK2103 039 41 6 INDUCTOR TOKO7KWM 220nH L4 7 2 RANSISTOR BC817 Q40 42 S 1 IC DIGITAL ANALOGUE CONVERTER 8 BIT 20PIN SSOP ul 1 HEADER MOLEX 18WAY LOW PROFILE P 4 C AMPLIFIER SL1613 C MPTC 508 U2 5 1 C RESET CHIP DS1255 SV U14 5 IC OPAMP QUAD TLOBACD S014 U6 8 11 21 1 CRYSTAL 4 9152MHz HC49 4 x 2 C AMPLIFIER IF MC1350D S08 09 10 1 IC QUAD TRI STATE DIFF LINE DRIVER DS34C87 S016 U12 BOTTOM SIDE CONVENTIONAL COMPONENTS 1 IC MICROPROCESSOR uPD78P054GC 389 FP80 U13 1 HEADER MOLEX BWAY RIGHT ANGLED SK CE IF RECEIVER PCB LAYOUT DERIVED FROM DRAWING No ISSUE SHEET oo 4346 007 N 1of1 66 Service Manual 83139 1 Ch6 Pathfinder Radar Chartplotter Series Raytheon Service Manual 83139 Raytheon Pathfinder Radar Chartplotter Series Document Number 83139 October 1998 Printed in England Raytheon Marine Company 676 Island Pond Road Manchester New Hampshire 03109 5420 Tel 001 603 647 7530 Fax 001 603 634 4756 Service Manual 83139 Raytheon Marine Company Anchorage Park Portsmouth Hampshire PO3 5TD Tel 01705 69361 1 Fax 01705 694642 http www raytheon com Raytheon
54. Modulator PSU board generates a high voltage pulse of 80nS 250nS or 700nS duration dependant upon the range setting and the corresponding IF Video filter control lines This pulse begins on the rising edge of a negative going trigger at a pulse repetition frequency PRF also defined by the range setting The resulting pulse is output to the magnetron which converts the energy into an RF pulse at a frequency of 9 41 GHz nominal All supply requirements are also provided by the Modulator PSU board The RF pulse is routed to an antenna via a 3 port circulatorwhich propagates microwave energy in only one direction and thereby provides isolation between the transmit source and the low noise converter A rotary joint is used to maintain continuity between a waveguide output from the circulator and a microstrip input to the antenna This is achieved via transitions into and back out of a section of co axial line which is configured with a split perpendicular to the axis of rotation The energy is then radiated by the antenna with a narrow azimuth beam shape 5 2 for the 18 patch 3 9 for the 24 patch with low sidelobe levels lt 22dB The elevation beamwidth is maintained at approximately 25 in order to illuminate targets during pitch and roll of the transmitting vessel Echoes are returned due to reflections from potential targets such as boats buoys land etc and in the form of clutter from sea rain etc The returned energy is col
55. N BrFtcv 17 ISE RADAR TX EN ut 1 Te von L10 STC_GEN1 SCH IF AMPAGC SCH IF _LOGAMP SCH MOD PSU Connector 0 6 adi 48 TUNE C IFO Ao2 H3 A03 aoa 3 n b GND connections 405 A DO DACDAT 17 pr aos 2 on adjacent pins AD7 6 IF 0 13 15 ADB D1 DACLD 15 p ADS 3 A010 16 A011 HE D2 DACCLK16 Lek A012 BWse10 IF11 14 ei pe 7 a TUNIND bro ai GND yon STC GENERATOR MB88346B GND GND TOTRIG N amp roTRIG N IFSTCBI MBS dur EwBs oun Multi Channel D A MBS amp BMBS amp Ga in BA aha paa Sea clut Bsea_ciut SVREF 5vREF B MICROCONTROLLER Bain clut Bnusin ciut DACDAT Ign acpat 1OVNEF A JF gain BIF gain DACLD_ _SDACLD 10VREF B DACCLK _ DACCLK TUNIND STELGENS Sen TOTRIG_N MO Due PKO gt M4 Pwi Wu M HEAT EN N HEAT EN N Inter unit Cable Connector M3 PAI PLS laprI ris To Display SK1 IDEO 8 GND gt PRI QUT PRI OUT 6 PRI DUTB EBT DUTB 5 SER IO SER 10 4 MG OTOR EN N _J MOTOR_EN_N SER IoB SER 108 3 AZ SHP OUT AZ SHP QUI gt AZ SHP OUTB AZ SHP OUTBI HP T GC E Note SHP_OUT and SHP_OUTB HEATER HF 4 E ER_OK are not connected 1 e MOD SENSE2 P SEN Fixing hole Kann SENSE 1 5VSWITCHED DS e MOD ISENSE 5VSWITCHED P N VSW Fixing hole MIRADAR TX EN 12v 1 HES MICRO SCH M e Fixing hole HFA oe TITLE Fixing hole e DFS IF RECEIVER TOP LEVEL GND Fixing hole DERIVED FROM DRAWING No ISSUE SHEET sal 4946 026 F 1 of 6 Serv
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57. NT Padsns INIFSIY TIILS SINOLdINAS LINVA ONT eoe deu oBeyoA Y6IH u35NVG NO 1N3S3ud TILS ANY 0Z NVH L H31V3HO 3 SWOLdWAS LINVA ejeudoudde yi quiesse yun Ajnej eote deyu 6 1SH29U9 NSd GON eu ONT JO uonoubeu uoJjeuBeui eoejdeg joadsng Hvd Jo age smes onuoo ATOM OS ANNOH Jo ejnpow y xoeuo ONIAHVA L ANY 0Z SLINY4 ON NVH L SS31 NIWA SS peoejdei eq pinous JOje n2JIo 9U esto SIU U sunooo seoejns EUuJe ul y JO UOISOJ109 AISS0X ji epeJDep SI NH LIHOO IV INNLOLNV OL NVHL SS31A8 ONIAHVA L 8N1898 J eoe deu ne god 18118981 J 10edsng suoies o piA Jo ureD 18A19981 j uo el 1snuu NNE 940J9J9U BulyJOM ONT pue Bun eq ysnw uoneubew SOU yO reubis Bunoajap aq 1snui noua ounjo ne 19A19991 G3M001 NIWA SS SS HLONIULS euis pue LU 3NNL 10 SenjeA ou ajou ILUSUEJ fue uu 9 UO uo xoq 6ngep youms O Asyyos puey 1uBu esp soes JO HV31O Dou pue sseJd dNLAS yvavy 19 98 ANIN ssaud eouenbes sseid Aay uappiy Aq xoq oyu Bngep eu dn je kew J0je n9JIo ay jo eoueuuoj1ed eu 8 0U 10J21N9119 LN3S3Hd LO N O3GIA ONVE NIVIN ON Kjesseoou se quiesse adejday abewep JO UOISO1109 Joj Aene yoyed euue jue joadsu mojaq ajou ges AIESSO98U JI d0d eoe deu UOISO1109 18N8981 4 eoe doJ Sue JO s sisiod woj dwis J 107e1n9119 1o dsul
58. S TP199 SHIPS in SUPPLY IN a56 BATT IPFET C157 STPSONOSFI 2 3 2 D58 1 vD2 10n L8 fi c134 c138 p BZXB4C12 7 V39ZA1 OPTIONAL C156 SAAN o iu 1n 2 FERRITE RING ezana ka M AR TP310 C36 C38 FITTED TO CABLE 1n 136C1B7 Le ER AI C187 F2 chassis S T 14 vD1 Bsou BATT UH BATT_IN 1 O 2 4 0 4u 1n po V39ZA1 ol c135 C139 IPFET FERRITE BEADS 0 1u 1n l TP35 303 pa TP361 t he vcc vc N ov 5 kel 4 VX SG a lt Ya TP375 TP354 EPIS 2 1 C140 C142 e e 3 O 4u 10n R362 1 47R 1 GND He H ssi 14 4C145 weren ommon secondary N S at secondary 2 bJ a A 0 1u 1n oO A298 TP243 BAS16 3 PHASE C141 C 443 RAGO STARPOINI BLD ONLY O 1u ji 1 TP221 TP222 i Tcfes TP220 C117 C53 C101 T E C172 e 44 100u C58 e C74 AR 10u TP356 ev TP371 D71 4 Se j AM vx 4 2 o iu L9 BATT h TX2 7 1 IF Sv gt A 1 10BF 20 3030 140 IssA 110006 ji R285 D70 gt 53 1 2 4 o 5 124 narz 100uH 3K3 BYV27 20 C150 R283 h notfitte 960980 TP218 TP217 220u 33k e e R296 2 Q57 C148 11 1 1 33C856 C149R 10u LM317LM 1K L D 1u 5 2 1f IN OUT IF 26 Me eu ov j TP244 Nek U174 26 R296 Sues 70374 39 3 1 cris a 7p AR tu 2 M 3 I 5 TP219 ll C59 sov P 1 B177 IT 10u C63 510 BZX84C15 4 ov 32n 1n o iu TP299 CZE 10 ai 0 1u R299 ee eg 1 TP21 YA T TP242 PSSE C132 9 R178 e l c154 C74 car ZI 1u 100u O 4u 8 ds 1 l 4 0 1 du
59. TOR SOT23 BC856 Q29 40 48 50 52 57 CAPACITOR ELECTROLYTIC 220uF 25V 20 3 5mm PITCH C150 WIRE LOOP TPT 2 RESISTOR 1206 12K 5 0 125W R189 294 2 C LOW POWER PWM UCC3800 S08 U11 12 3 CAPACITOR ELECTROLYTIC 470uF 10V 20 C57 61 164 SIL PAD 19x25 RESISTOR 1206 15K 5 0 125W R326 C ADJUSTABLE REGULATOR LM317 S08 U17 2 CAPACITOR ELECTROLYTIC 560uF 35V 10 C36 100 HEATS FET HT3 5 RESISTOR 1206 22K 5 0 125W R142 147 184 327 376 2 C MONOSTABLE 74LS221 S014 U20 21 DIODE RECTIFIER 11DQ10 100V 1 1A D79 IEATS SW25 4 IT 2 RESISTOR 1206 33K 1 0 125W R196 283 C DUAL MOSFET DRIVER MIC4427CM SO8 U22 2 DIODE BYV26C 022 23 IEATS REDPOINT PTF750 IT TITLE 5 RESISTOR 1206 47K 5 0 125W R180 194 272 328 344 C DUAL OPAMP LM358M SO8 U23 DIODE UF5404 D40 HEATSINK RETAINER CLIP 5901 HC MODULATOR PSU BOARD _ 6 RESISTOR 1206 100K 5 0 125W R88 188 235 291 325 334 C TL431CD S08 U26 DIODE POWER 1N5404 036 VARISTOR METAL OXIDE V39ZA1 VD 2 RESISTOR 1206 220K 5x 0 125W 197 323 C HEX INVERTER WM74HC14M S014 U29 DIODE ZENER BZVCIB D45 2 FIBRE SCREW SEAL PCB LAYOUT 4kW STEPPER MOTOR 3 RESISTOR 1206 ORO 0 125W R275 345 346 C QUAD NOR GATE 74HCO2 S014 U30 2 DIODE HIGH VOLTAGE SANKENUX FOB D41 42 2 RIVSCREM DERIVED FROM DRAWING No ISSUE SHEET 1 RESISTOR 1206 3R3 5 0 125W R127 2 C OPTO ISOLATOR PC357 0P3 5 3 DIODE BYV27 200 029 30 70 LABEL POWER CONNECTOR LA ssl 4346 005 s 1 of 2 64 Service Manual 83139 1 Ch6 Chapter 6 Drawings Raytheon
60. The scanner has now been reset to factory settings Check if the fault symptoms have disappeared Part2 c A 2 Q G Z o 3 Checkthat the coarse tune setting of the Radar is correct by adjusting the Tune Preset value in the Advanced Settings Menu If still no targets appear or Radar image is poor then continue with this checklist but firstly restore the Tune Preset to its previous value using the softkey RESTORE PREVIOUS 4 Ifthe fault persists see the Diagnostics Menu flowchart A 5 Iftheunitis still faulty see Radar image fault flowchart E 24 Service Manual 83139 1 Ch3 Chapter 3 Fault Finding Raytheon SYSTEM FAULT FINDING DIAGNOSTIC MENU NOTE It is possible that an item could indicate fail but radar operation is normal For this reason the fault symptoms that POWER UP RADAR When the next 70sec countdown has finished put radar into transmit and set to would be observed if that item has failed are each of 1 8nm 3nm and 6nm ranges for at described Always try to confirm the fault least 5 secs This allows the modulator symptom before proceeding with fault current value in the diagnostics menu to finding In any case all fails should be listed be updated for each pulse length on the service fault report form This indicates there is a bad connection in the PRI and AZ_SHP pairs of wires between the scanner and display Enable the diagnostics menu using the followi
61. V A R248 1n FKP1 376 NoF it 4 6 TP378 veis 220R 14 cExT 4 12us See Note 1 1p259 TP260 1 Pub 1 Da R309 D41 270R 4 T T 2 2 E A rech 18 U20A 2 G41 Q42 Ux FoB 411 TP380 4 REXT CEXT 1 1 R135 D36 nera L td 13 r Bs j es alke A lt 59 A 74LS221 Q TP164 TEFP350 1NS4Q4 PHI 215 TIE BOns PW adjust IRFP350 PRO2 i 10n i CLR ep a L2 RV1 amp TP379 R366 a 2K POT n D40 1KO L 075 UF5404 ACO3 a pa no FE dum 5254 GND 4 x TS x EG See Table 2 5V 1 R160 me ZE G a GND GND TP274 see table R35 R130 R169 L A352 470 a a see table 47h MES R164 2R183 BAS 7k V e D Z o R304 TPd87 R264 gt R265 TP160 10K 1 0 47R 7 TP328 hofit 2408 4458 Chesicig 1 SCREW R305 1 1 TP127 Rida E f M oe ea E n t jn REDZIE TREN R35 R2b1 R202 Riga 7 2u2 HF 7 100R LL 27 ezma C53 47R 0 47R 0 47R 4 p ECK TP324 see table A ofit noflit 100p e S e 20 AS c91 nesa P369 TP130 GND TP276 CEXT 4 68u Se TP314 1 2041309 1 4 TP12B U20B gt GND STAR POINT n138 1 7 REXT CEXT FROSV cas Modulator Build Standards 11 10 9 5 R126 p R202 R164 R R c123 C180 1 B t 109 5 T RAE deka rp18097157 0 1u see table R127 M SE ERE ERE 10R i zaa 119 ch a Hex 4K7 see tabl 2kW 1RO 1RO 1RO 1RO NF NF 4n7 EPer senn L E ya d TPLSS T TP166 4kw NF OR47 OR47 OR47 NF NF 4n7 R119 a 8caas e R pi gt PAST Tosh Mag NJRC Mag l 10R
62. X PICOFLEX CN2 8 RESISTOR 1206 2K2 5 0 125W R104 109 161 162 169 172 8 DIODE SOT23 BAV70 055 59 60 64 92 95 CAPACITOR CERAMIC 1nF 1KV 10 C119 HEADER 6WAY MOLEX KK VERTICLE 0 1 PITCH CN4 4 RESISTOR 1206 2K7 5 0 125W R192 293 316 317 DIODE SOT23 BAV99 D97 CAPACITOR RADIAL 4 7nF 400V 10mm PITCH C43 HEADER 3WAY MOLEX KK VERTICLE 0 1 PITCH CN5 RESISTOR 1206 3K3 5 0 125W R285 DIODE ZENER SOT23 BZX84C12 D58 CAPACITOR POLYPROPYLENE RADIAL 4 7nF 2kV C179 HEADER 2WAY MOLEX MINI CN6 RESISTOR 1206 3K9 5 0 125W R282 DIODE ZENER SOT23 BZX84C15 D99 2 CAPACITOR POLYESTER 100nF 250V 10 C47 48 2 NDUCTOR RN112 4 02 CM1 L6 10 RESISTOR 1206 4K7 5 0 125W R76 167 185 186 195 200 DIODE ZENER SOT23 BZX84C18 D50 CAPACITOR POLYESTER 100nF 400V 10 C67 THERMISTOR PTH9MO4BC222TS2 PT 262 263 270 333 DIODE ZENER SOT23 BZX84C5V1 D51 CAPACITOR MKP10 2 2uF 400V C178 SCREW PAN HEAD STAINLESS STEEL 4x1 2 P021 SC 2 RESISTOR 1206 SK6 1 0 125W 226 329 7 DIODE SMB 10BQ060TR 046 49 65 69 80 5 CAPACITOR ELECTROLYTIC 10uF 60V 80 20 C59 148 168 WAS 3 SINGLE COIL W RESISTOR 1206 6K8 1 0 125W R199 0 DIODE SMB 10BF20 067 68 71 CAPACITOR ELECTROLYTIC 68uF 400V 20 C90 2 SLEEVING SILICONE RUBBER 1mm DIA BLK 2x25mm LONG SL1 2 22 ESISTOR 1206 10K 1 0 125W R68 70 128 149 163 236 1 RANSISTOR SOT23 BC846 Q28 30 31 33 46 54 55 58 60 62 63 CAPACITOR ELECTROLYTIC 100uF 35V C46 53 60 132 WIRE LINK WL 257 269 271 281 292 295 304 306 308 5310 312 341 349 354 6 RANSIS
63. and its series source resistors R132 R133 etc until the FET begins to turn off thus holding the current at a constant level The resulting primary voltage pulse causes an associated secondary pulse stepped up by the transformer turns ratio to several kV When the secondary voltage reaches the magnetron switch on threshold it will fire generating a burst of microwave power at several kW and at a frequency of approx 9 4GHz Part 2 Chapter 2 The FET is protected from operation at excess temperature by a thermistor PT1 screwed to the FET heatsink and its associated circuitry It is further protected from operation with unstable supply voltage by Q54 The control circuitry comprises of a number of monostables Each of which generates one of the three different pulse widths used for different range settings Three variable resistors RV1 RV2 and RV3 set the exact pulse width required These variable resistors are preset at the factory They require specialist equipment for tuning and must not be adjusted by the service engineer Two circuit blocks monitor the performance of the modulator magnetron to provide diagnostic information for service personnel which may be read in the diagnostics menu at the display unit Comparitor Q62 Q63 senses the correct flow of magnetron heater current and provides anoutput HEATER OK which is normally a logic high when the magnetron is connected and the high voltage supply is enabled in transmit mode o
64. anner Red 12 Azimuth and ship s heading pulses from scanner Violet 13 Azimuth and ship s heading pulses from scanner Grey 2 Check the scanner cable for signs of damage corrosion 3 Check the unit is correctly supplied with power Voltage at power cable socket is between 10 7 and 32Volts pins 5 and 3 If not check the integrity of the power cabling to the radar system Service Manual 83139 1 Ch3 21 Part 2 A 2 2 he lt o Raytheon Pathfinder Radar Chartplotter Series 4 With scanner cable removed measure the supply voltage on display cable plug at the rear of the display unit and check it reads between 10 7 and 32 Volts power pins may be identified by their larger diameter compared to the signal pins If not see Display Check 1 on following page 5 Nowcheck scanner communications link With scanner cable disconnected from rear of display measure resistance between pins 6 and 10 of scanner cable plug A reading of approximately 160 W should be obtained If not see Scanner Check 1 on following page 6 Now check display communications link With scanner and power cables disconnected from rear of display measure resistance between pins 6 and 10 of the scanner cable plug at the rear of the display A reading of approximately 160 W should be obtained If not see Display Check 2 on following page 7 Turn the display unit on with the scanner disconnected Wait until the scanner not responding message
65. appears then enter the Diagnostics menu Check the Display Comms test result A pass indicates the display is probably OK and the fault lies in the scanner power supply or communications link 8 Reconnect the scanner cable Remove the radome cover Switch the unit on but ENSURE THE UNIT IS NOT IN TRANSMIT MODE Check that the voltage at CN 1 the power cable connector is greater than 8 7 Volts If it is then see Scanner Check 2 checklist or if the display countdown restarts unexpectedly then see Display Check 3 If less than 8 7 V is measured then the fault could be excessive voltage drop in the inter unit scanner cable due to damage or corrosion Repair or replace cable if necessary 9 Anexcessive voltage drop could also be due to the scanner drawing excess current If there is just a simple communications fault all the scanner functions will be off and it will consume approximately 2 3 Watts e g at 8 7 V it would draw 0 27Amps Use an ammeter to measure the current drawn at CN1 and hence calculate the power If the power is OK then proceed with Scanner Check 1 If the power consumption is excessive then proceed with Scanner Check 2 Display Circuit Operation The ships supply connects on the PSU board via solder buckets to the rear panel connector Power is applied to the units PSU when the internal relay closes The relay is driven by either the power key via circuitry on the CPU board or by the micro itself Thus initial switch on occurs wh
66. avigation Its accuracy can be affected by many factors including equipment failure or defects environmental conditions and improper handling or use It is the user s responsibility to exercise common prudence and navigational judgements This radar unit should not be relied upon as a substitute for such prudence and judgement Warranty When a repair is carried out by an authorised Raytheon service representative some or all of the cost may be covered by the Raytheon warranty Refer to the Limited Warranty Certificate reproduced for guidance at the beginning of Part 1 ii Service Manual 83139 1 PR Contents Raytheon Contents Chapter 1 Introduction EE 1 Chapter 2 Technical Description rrrrnnnnnnvvnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnennnnnnr 3 ae 3 Scanner C nigUrallo e kk z kara te 3 Receiver configuration NET 4 Low Noise Converter Limiter NC 4 2 2 Modulator PSU Interface Description 6 GONNECIONS umasa 6 Ship Supply Power Input CN1 6 W PSU Control Status CN2 dbi 6 5 Modulator Control Status CN2 6 leen te EE 7 Ships Heading Interface ene 7 Receiver Power Supply 7 Stepper Motor Interface 7 Ships Heading Sensor Opto coupler Interfa
67. ays check the condition of the case seal and replace if necessary before fitting the top cover 3 Antenna amp Rotary Joint WARNING The Antenna must not be separated from the Rotary Joint Do not unsolder the antenna probe or release any of the antenna fixings Remove the complete assembly by first releasing the drive belt from the motor pulley wheel Then remove the 4 screws item 20 accessed through the holes in the top of the locking ring which supports the plastic pulley wheel and lift the complete assembly clear of the core Take care not to damage the probe protruding below the rotating joint The bearings must not be packed with additional grease When fitting the antenna amp rotating joint position the drive belt above the plastic pulley wheel align the flat on the bearing retaining plate with the flat on the core casting and then rotate the locking ring so that the 4 screws can be refitted Make certain the drive belt is free from dirt or grease and refit to the pulley wheels 4 Circulator WARNING The Circulator must not be taken apart To remove the circulator slacken the 4 lower screws and remove the 4 upper screws When fitting the circulator replace all the screws loosely and then tighten evenly 5 Drive Belt The Antenna amp Rotating Joint must be removed if the drive belt is to be replaced Ensure the drive belt is free from grease and dirt before fitting 6 LNC PCB Assembly It is recommended that the an
68. ce 7 Magnetron Interface nn 8 2 3 Modulator PSU Circuit Description kek 8 Design Overview nr dui M M EM DM ACE 8 GICUIL Re AE 9 EMG Pile lise no opo ee A O tte 9 Over Voltage Protection ESS ee eee eee tt xe eve 9 Supply Reversal Protection 9 DC DC1 and Start Shutdown Circuit 9 Scanner operating supply voltage range 9 Output Specification DC DC1 10 DEN vd b req bu a k Ka Maa A ciu RA 10 Output Specification DC DC2 10 MOU OU Dee TS 11 Modulator Clock PRL FLS asza Gana D EE b dia 12 Ships Heading Sensor 12 Stepper Motor Controller oa c e torpe EE ue 12 2 4 IF Receiver PCB Interface Description 12 EEGENEN 12 Display Connector RT 13 LNG Connector FI bett ERES ERR ero dak wl zik kaw etes 14 Mod IF Interconnect P4 14 Service Manual 83139 1 TC iii Raytheon Pathfinder Radar Chartplotter Series 2 5 IF Receiver Circuit Description seen 14 WEHY casas a uyu Y NA dedi eee cera DAN a 14 Summary of bandwidths pulse
69. ck List in Part 1 Section 3 5 which will advise on the appropriate course of action 3 1 Safety Notices The following checks are intended only for qualified service technicians When the display unit is powered with the case opened GREAT CARE MUST BE TAKEN as the unit contains DANGEROUS HIGH VOLTAGES in the circuitry and connections to the Cold Cathode Fluorescent Lamp CCFL Voltages in excess of 700 Volts may be present on connector SK9 and its associated cable Part 2 Chapter 3 DANGER The radar scanner also contains DANGEROUS HIGH VOLTAGES in the vicinity of the high voltage power supply unit Modulator and magnetron connections The radar scanner emits non ionising radiation from the magnetron circulator and antenna assemblies There are also low levels of ionising radiation x rays in S close proximity to the magnetron when it is transmitting It should not be operated Non onising Radiation in transmit mode near to any persons or within enclosed buildings 3 2 General Notes 1 IMPORTANT Whenever the microwave core assembly is removed from the radome assembly the 4 foot seals must always be renewed to guarantee the water seal integrity of the radome unit 2 See Replacement of Parts notes and exploded views in Chapter 5 of Parts 2 and 3 for guidance in dismantling of the radar 3 The Connector pin labelling convention used in this manual is as follows J4 6 means connector J4 pin 4 When measurement
70. ction If a FAIL status is indicated check the condition of the inter unit cable and the 8 way 40 Service Manual 83139 1 Ch3 Chapter 3 Fault Finding Raytheon Molex connector at SK1 in the Radome pins 1and 2 5 and 6 See flowchart for further diagnosis This test is performed once at power up only NOTE Failure Symptoms Failure of one of the AZ SHP pair of wires pins 1 and 2 can give an effect in the Radar picture where certain sectors of the screen are updated rapidly while other are frozen or blank If both fail then no radar picture or video noise is seen Failure of one of the PRI links pins 5 and 6 can give a spoke type interference effect in the Radar picture with possibly a blank hole in the centre of the screen up to approximately 0 7nm range If both fail then no radar picture or video noise will be seen 10 11 12 RECEIVER SUPPLY 12V 5 9V and 5V This test checks the presence of the above supply voltages at the IF receiver The test is performed once each time that transmit mode is entered If the diagnostics menu is entered before transmitting then these items will indicate NOT TESTED The 12V and 5V tests are on the switched rails of the IF receiver Failure of 5V indicates an IF board problem the 12V either a MOD PSU ribbon cable or IF Receiver problem and 5 9V most likely a MOD PSU or ribbon cable problem See flowchart for further diagnosis Part 2 Chapter 3 13 SCANNER RESET When t
71. dbook Part 2 CH 2 o 46 Service Manual 83139 1 Ch4 Chapter 5 Replacement Parts Raytheon Chapter 5 Replacement Parts This chapter contains the Spare Parts Lists for the 18 and 24 radar scanner units This is followed by a number of notes on how to obtain access to specific parts and how to replace them Generally identification of parts and their replacement can be caried out by referring to the exploded view drawings at the rear of this chapter 5 1 Spare Parts Lists 18 Radar Scanner Unit When ordering spares quote the Spare Description prefixed by 18 Radar and the Part No The Item numbers refer to Figure 20 18 and 24 Scanner Unit L N to Item Spare Description Part No Comment s Top cover Raytheon including W101 Not illustrated 18 Radome top Square shoulder nut x4 Radome label set 1 Base including W103 18 Radome Base Cable clamp Screw M4 x 16 x2 Cable gland Nylon lock nut Cable gland washer Rating label Case Seal R085 Antenna amp Rotary Joint including R086 Rotary joint sub assembly Protection cap 24 Radar Scanner Unit When ordering spares quote the Spare Description prefixed by 24 Radar and the Part No The Item numbers refer to Figure 20 18 and 24 Scanner Unit Item Spare Description Part No Comment Top Cover Raytheon including W105 Not illustrated 24 Radome top Square shoulder nut x4
72. differing configurations motor type magnetron power etc The figure below shows an overall block diagram of the Mod PSU PCB showing the principal circuit blocks Stepper Motor Drive a 5 Stepper Motor option DC DC2 Mod 12V Modulator EE MOTOR EN N PSU Il FT OTOR EN Mod Ap Mod 300V Modulator Magnetron gt d PRI PLS PWO IF 5V PWI IF 5V STEP l0 RADAR TX EN MOD ISENSE IF 12V HEATER_EN_N sync cock DC DC1 Receiver PSU Il control Se w Startup Shutdown Cct CN1 Ship Supply ly R EMC Filt Sun Ld CN2 Mod IF Interconnect Ship s CNA Stepper Motor Til Ze Supply CN5 Ships Heading CN6 Magnetron TT IF 26V IF Receiver Ships Heading Sensor Sek Ship s Heading Interface Over Voltage Vx is internal 11 5V supply rail primary side ref Protection i iei i i Higate A HiGate is internal supply rail primary side ref w Figure 6 Modulator PSU Overview 8 Service Manual 83139 1 Ch2 Chapter 2 Technical Description Raytheon Circuit Description EMC Filter The EMC filter section comprises of a common mode inductor and associated filter capacitance s to minimise EMC problems with other electronic equipment Over Voltage Protection A varistor VD1 protects the unit from over voltage surges Supply Reversal Protection
73. e eu JE 6 IS 42849 god NSd GOW eu uo 8958JJ9 UI uonoubew pue saijddns 1918991 eu Yoyo ANSIIL 9N1 JO 18118981 4 NSd UHM SI we qoJd pedsns apouous Apr ONT SI ONT 928 dau ONT Aney eBeyon uBIH ua9Nva GOW 10 uoJjeuGeEL god 41 908jdeJ J9A I999J 41 ou uo uiejqoud 18881 oJollu e eq ISN 6 ISIHo8 UD ul SOU UE Y29949 JBUUEOS ul JUNO eNsseoxe pedsns MO 81989 e qeo 99e de1 10 1eday ebewep u0IS01109 JO 8 qeo pue s10 pouuos 398uO egeo yun Jezu ui doup ebeyon OAISS99X9 eq PIN wnululiu syon AL S SI 8LUOPEJ eu u NO Ie s a109 Jamod uo efGejjon jeu 49840 uoneJedo sepes JO MO 00 BBE OA uiejgoud Ajddns sdiys WNWIUILU NLOL SI kejdsip au ye Ajddns sdiys 49840 ONT 10 1819991 j NSd GOW 10 uoau bew Alddns 1emod sdius sq pjnoo wajqold Ajpalosdxeun Buljjesai si Jeuueos au u god 18118991 J 94 uo 10sseooud OJolW BY jeu sejeoipu 13534 H3NNVOS 4a deyo c Med 26 Service Manual 83139 1 Ch3 Raytheon Chapter 3 Fault Finding c Med g 4a deyo p OPa gId ONT 89e d21 ONT AjneJ payoys A6 S ONI SI webrip jno uid JO uonduosep ediUY YaL eu JO uores eoejelul u g eun iJ ees 2109 y u 10J 8UU09JSJUI ONT1E GND 07 A6 S Wouj OUS 10 Y90949 dOd NSd GOW edejday Ajuo emm
74. en lid Conductive washer 12 LNC Connector assembly R105 Moulded connector assembly to IF 13 Modulator PCB 2KW Toshiba R097 13 Modulator PCB 2KW NJRC R58007 13 Modulator PCB 4kW R098 14 IF PCB R102 IF PCB and support control 15 Core ribbon cable R103 18 way modulator to IF 16 IF Cover including R108 IF Cover and Urethane Tape 30mm 48 Service Manual 83139 1 Ch5 Chapter 5 Replacement Parts Raytheon 17 Receiver cover and seal including R106 LNC Receiver cover Receiver cover seal Receiver RAM 18 Lower cover and insulator including R107 Modulator Lower cover and Insulator High voltage label 18 and 24 Scanner common spares When ordering spares quote the Spare Description and the Part No The Item 19 refers to Figure 20 18 and 24 Scanner Unit Item Spare Description Part No Comment l 18 amp 24 Drain tube R123 Not illustrated 19 18 amp 24 Foot seal x4 R124 Also part of item 5 a 18 amp 24 Lanyard comprising R125 Not illustrated Polypropylene lanyard 500mm 18 amp 24 Radar fittings pack including W104 Not illustrated Bolt M8 x 40mm x4 Washer spring M8 x4 Washer M8 x4 Radome fixing screw kit including D346 Not illustrated Case screws x4 O Ring 3 16 inch ID x8 Washer M4 x4 Radar cable connector kit R126 Not illustrated Bitumen washer x4 R141 Not illustrated 4
75. en the power key is depressed causing the relay to close The software then runs and holds the relay closed At switch off the software shuts the unit down then opens the relay Display Internal Checks For all the following internal checks with the display unit opened out and with all connectors still in place attach a ships power cable to the rear panel connector and switch the supply on DANGER Display Check 1 Display has no power at scanner plug at rear of display 1 Checkthat the power reaches the Power NMEA connector solder buckets on the PSU board If not then there is a failure of the power NMEA connector The solder buckets of this connector may be probed with the CPU board in place The connector is visible between CPU connectors J8 and J4 on the PSU board The battery power pins are those with the thick pcb tracks running to them If an incorrect voltage is measured then disassemble the rear cover assembly and check the rear panel connector for signs of corrosion damage 22 Service Manual 83139 1 Ch3 Chapter 3 Fault Finding Raytheon Display Check 2 Display communications check 1 Check resistance at CPU board connector J4 between J4 11 and J4 12 is approx 160 w If so must be cable fault either on rear panel bucket connector on PSU board or ribbon cable to CPU J4 Check for damage or corrosion and replace as necessary Display Check 3 Display countdown restarts unexpectedly 1 Check that the Power cable be
76. er motor pulses Generates Azimuth pulses for display synchronisation Generates the PRI Pulse Repetition Interval pulses to fire the magnetron start the STC cycle and synchronise the display e Buffers the Ships Heading Pulse from the MOD PSU PCB for synchronising the display Communicates with the display via a serial interface Initial Scanner set up EEprom stored values The scanner has non volatile storage EEprom U18 for the following items Optimum VCO coarse and fine tune settings for Short Medium and Long pulses e MBS Duration and Amplitude for Short Medium and Long pulses e Range Zero Offset adjusted by Display Timing function in Advanced settings Menu for Short Medium and Long pulses Stepper motor ramp time and pulse period pre set at factory non adjustable e Azimuth zero offset adjusted by Bearing Alignment function in Radar Set Up Menu 16 Service Manual 83139 1 Ch2 Chapter 2 Technical Description Raytheon e PRI Jitter Offset used to help with interference rejection STC Preset Max a preset level of R clutter curve is set to equalise close target returns Scanner Size storage of the antenna size fitted to the Scanner used to set Max Range for Display e Modulator Power The power of the modulator in kW also used to set Max range for Display The above stored parameters each have a factory set and used working location These values are set at the factory and are optimised for
77. ge V 250 270 288 4kW systems MOD 300V load mA 0 50 4kW systems MOD 12V output voltage V 11 2 12 0 12 8 MOD 12V load mA 350 500 2 phase unipolar stepper motor 10 Service Manual 83139 1 Ch2 Chapter 2 Technical Description Raytheon Modulator IMPORTANT The modulator circuit contains very high voltages and energy levels care should be exercised in all maintenance activities in this area Only those items which appear on the RME spares list may be replaced The modulator s function is to drive the magnetron in order to generate a transmit pulse at approx 9 4GHz to the antenna The modulator is required to generate three different pulse widths as selected by external logic control lines PWO PW1 The modulator is fired when triggered by the rising edge of the PRI_PLS logic level control signal from the micro controller In addition a further control line RADAR_TX_EN is used to over ride PRI PLS and disable transmission when held low Output sense lines indicate correct operation to the external micro controller The modulator comprises a high voltage pulse transformer Tx3 and a switching FET Q42 together with associated control and pulse shaping circuitry In operation the control circuitry selects one of three pulse widths which then drive the FET gate via IC U22 As the FET turns on it switches the high voltage supply MOD 300V across the very low impedance of the pulse transformer primary The current rapidly rises in the FET
78. gnetron or LNG 45 4 3 Bearing Mr elio ae 45 AA Display TING He 45 45 TUNG Preset as ka HS 46 Chapter 5 Replacement Parts 1 kake kk n kk kK AKA KK KAK KK KHK KAKA KHK KH HAWA AKA AA 47 5 1 Spare Parts ISIS uuu W AR AN AS O AR a A pret Eine 47 18 Radar Scanner Unit seen ee kas nt tent etc te deinde kk KH 47 224 Radar Scanner nil snna an aa a n a UP a HERE CAE 47 Radar Core Assembly unn 48 18 and 24 Scanner common spares sssseeesesesssseerrnrrererrrnrnrneserrrreneeeet 49 4 2 18 and 24 Scanner Units replacement of parts 49 KEEN EE 50 Calegory SU a as Oke ee a a Salen a anne 51 Chapter RT E 55 Bee le e 55 18 2kW and 24 4kW Scanner Interconnections 56 Modulator PSU Board Top level E kk kk 57 Modulator PSU Board Low Voltage PSU 58 Modulator PSU Board High Voltage PSU 59 Modulator PSU Board Modulator kk kk 60 Modulator PSU Board 3 Phase DC brushless motor drive 61 Modulator PSU Board Stepper Motor Drive 62 Modulator PSU Board PCB layout 2kW stepper mo
79. hapter 2 range as in Figure 7 in Chapter 2 CN2 16 MOD SENSE1 Analogue voltage indicates N A _ build standard CN2 13 MOD_SENSE2 Analogue voltage indicates N A build standard Note With V1 14 Scanner Micro Software the modulator current readings in the diagnostics menu are incorrect In this case check the voltage at Pin 17 CN2 of MOD PSU PCB The voltage should be within the limits given in the modulator technical description Chapter 2 for MOD_ISENSE The unit must be powered and in transmit mode but ensure magnetron connector CN7 is disconnected and connect dummy load at CN7 Unit must be carefully supported to allow antenna to rotate 38 Service Manual 83139 1 Ch3 Chapter 3 Fault Finding Raytheon 3 6 Diagnostics Menu detailed description The diagnostics menu can be enabled as follows Press MENU Press RADAR SET UP or CHART SET UP gt Press and hold ENTER for 5 seconds gt Press BUILT IN TEST The menu lists the status of the following items 1 o A O OV dw o N o O O N N O DQ gt Q LN 24 SCANNER BUILD STD RC520 or arepeater display will only show data for these items marked SCANNER SW VERSION ESN DISPLAY SW VERSION SCANNER SIZE MODULATOR POWER HEATER HOUR COUNT DISPLAY COMMS CABLE TEST STATUS RECEIVER SUPPLY 12V RECEIVER SUPPLY 5 9V RECEIVER SUPPLY 5V SCANNER RESET SHIP HEADING SENSOR MAGNETRON HEATER EEPROM WRITE EEPROM READ FACTORY SETUP I
80. he Radar system is powered up the scanner is in a reset state which the display acknowledges and then initialises operation If the power supply to the Radar system is interrupted ship s supply fault or the scanners own PSU goes faulty it can Reset again This menu item logs the number of times that the scanner has reset since power up During normal operation this should be zero If itis not zero then a fault with the MOD PSU PCB in the scanner may be the cause or a Magnetron failure causing a short circuit on the PSU s High voltage output and thus causing the PSU to continually reset See Flowchart B 14 SHIP HEADING SENSOR This test checks the presence of Ships Heading Pulses from the opto PCB in the radome which should be once per revolution of the antenna A FAIL status could either be a failure of the opto PCB cable connector etc Or failure of rotation of the antenna possibly a Stepper motor problem belt drive failure or antenna seizure See flow chart for further diagnosis The test is part of a combined Status Report 1 test and is performed once every 4 sec s 15 MAGNETRON HEATER This test detects the presence of current being drawn by the Magnetron heater during standby and transmit operation The detection circuit uses a differential transistor pair Q62 and Q63 sheet 3 of the circuit diagram on the MOD PSU PCB to monitor the current If a FAIL status is indicated the most likely cause is that the magnetron heater wire
81. he alarm will sound on the other unit for about 5 seconds If this unit then shows the message STANDBY it is the Master display It will be possible to use scanner from the master display If the unit remaining powered up is the repeater again a message HSB LOST will be displayed and the alarm will sound for about 5 seconds If the unit then displays SCANNER NOT RESPONDING then it is either a slave or the scanner is faulty Repeat the procedure above on the other unit to determine if the fault is in the repeater or the scanner 3 5 Check Lists Check List 2 SCANNER NOT RESPONDING message displayed or Start up count down restarts unexpectedly Part 2 Chapter 3 External Checks 1 Check the inter unit scanner cable is correctly fitted and pushed home at the rear of the display unit 4 2 olo 1 5 O 3 8 6 11 oNO 9 13 7 10 12 D4083 1 Figure 15 Scanner cable end connector No Function Colour 1 I F Video information from scanner Coaxial inner 2 I F Video ground Coaxial outer 3 Battery negative filtered to scanner Black 4 Transmit trigger pulses from scanner Orange 5 Battery negative filtered to scanner Black 6 Command data link to from scanner Green 7 Transmit trigger pulses Yellow 8 Screen No insulation 9 Battery positive filtered switched to scanner Red 10 Command data link to from scanner Blue 11 Battery positive filtered switched to sc
82. ice Manual 83139 1 Ch6 65 Raytheon Pathfinder Radar Chartplotter Series IF Receiver PCB Layout
83. ided with a compression cable gland push fit connector for signal 8 way and sprung loaded connectors for power 2 4way The cable consists of the following cores 1 75 ohm coaxial cable carrying the 1 75V peak to peak video signal from the scanner pins 7and8 2 Twisted pair cable carrying the 5V differential azimuth and ships heading reset synchronising signal from the scanner pins 1and2 3 Twisted pair cable carrying 5V differential PRI pulse synchronising signal from the scanner pins 5and6 4 Twisted pair cable carrying 5V differential bi directional serial communications signal RS485 between scanner and display pins 3and4 5 8 7V 32V DC at scanner With a standard 1 5 metre power cable the maximum cable length between scanner and display is 35 metres Combinations of inter unit cables and their effect on power cable extensions if any are discussed in Section 6 5 Inter Unit Cable and Power Cable in the HSB Series Pathfinder Radar Owner s Handbook 18 Service Manual 83139 1 Ch2 Chapter 3 Fault Finding Raytheon Chapter 3 Fault Finding This chapter details the fault finding and repair issues for the Radome Scanner Units Please read the 3 1 Safety Notices and 3 2 General Notes below before commencing a service operation You should also read the 3 3 Built in Testing Diagnostics section as this will be of use in many cases Begin the fault finding procedure by refering to the System Trouble shooting Che
84. ion CN1 5 BATT IN Power input _ Ships power i p CN1 6 CN1 1 BATT_IN Power input Ships power return CN1 2 PSU Control Status CN2 Ref Signal Name Type State Function CN2 12 Heater_EN_N Logic input 0 Enable MOD 6 3V MOD 300V MOD 12V outputs i e enable magnetron heater modulator PSU and stepper motor PSU 1 Disable the above Modulator Control Status CN2 Ref Signal Name Type State Function CN2 18 RADAR_TX_EN Logic input 1 Enable modulator magnetron pulses 0 Disable modulator regardless of activity on PRI PLS CN2 9 PWO Logic input PWO PWI Select modulator pulse width as follows CN2 11 PW1 Logic input 0 0 80ns pulse 1 0 250ns pulse 0 1 700ns pulse 1 1 700ns pulse not used CN2 8 PRI PLS Logic input clock 10us 0 5us low Rising edge triggers modulator pulse Frequency will be varied according to pulse width 80ns PRF 2250Hz 200ns PRF 1500Hz 700ns PRF 750Hz See Figure 5 CN2 3 HEATER_OK Logic output 1 Implies magnetron heater is connected and drawing gt minimum current 0 Magnetron heater faulty or magnetron disconnected CN2 17 MOD_ISENSE Analogue output 0 5 0V Indicates peak magnitude of magnetron anode current and thus indicates approximately peak R F power output See Figure 7 CN2 16 MOD_SENSE1 Analogue output 0 5 0V Analogue voltage indicates build standard CN2 13 MOD_SENSE2 Analogue output 0 5 0V Analogue voltage indicates build standard 6 Service Manual 83139 1 Ch2 Chapter
85. is sound if OK then fault on mod psu board repair or replace CN2 10 STEP 10 Clock Input Pulses Input from IF PCB at Motor pulses will only be generated if the IF from IF PCB used by the mod psu to generate Stepper motor drive pulses 189 Hz 50 duty cycle PCB can see the pull up resistor fitted to this line on the mod psu Therefore i Disconnect ribbon connector at CN2 and check pin 10 on the mod psu is high if not then the mod psu is faulty Repair or replace ii Check IF PCB ribbon cable and connector at CN2 are sound iii If sound and still no pulses fault on IF Receiver PCB 36 Service Manual 83139 1 Ch3 Chapter 3 Fault Finding Raytheon Stepper Motor Interface Ref Signal Name Function Status during standby Fault Checks CN4 6 STMO1 Phase A2 switch Whilst motor is enabled see scope trace If E waveform is incorrect or not present check the following 1 Disconnect CN4 Check if motor shaft turns yin E freely by hand If not then motor is seized FE Replace motor 2 2 Use an ohm meter to check motor winding d resistance At motor cable connector measure LL L across om 5 00 B10 0ms 1 94dy chit Sockets 1 and 2 27W Sockets 2 and 3 27w Sockets 4 and 5 27w Sockets 5 and 6 27w If measurement is good then MOD PSU is faulty If measurement is bad then motor is faulty p o s 2
86. it mode is entered within the 1 minute period To save power the motor is stopped after the 1 minute period if the unit is left in stand by mode In this case the motor will re start in the same ramped speed fashion when transmit is entered causing a few seconds delay before the display sweep is in sync with the antenna rotation 7 The Display unit may be powered with the case folded open after the rear case screws have been removed If necessary the CPU PCB may be operated unscrewed from the moulding if great care is taken to ensure it does not short circuit to any other pcb Under no circumstances should the unit be operated without the LCD module plugged in to the CPU assembly connector J8 to do so can damage the CPU PCB assembly 8 Both the scanner and display unit operate from an internally isolated PSU Thus ships battery voltage measurements must be made with reference to the ships battery negative whereas the internally derived PSU outputs must be made with reference to the secondary ground For the display unit this can conveniently be probed at the GND test pad near J7 on the CPU PCB For the scanner unit this can be conveniently probed from the metal casting of the scanner assembly which is connected to the secondary GND Unless otherwise stated measurements given in the text are relative to the secondary grounds 9 When switching the display unit on off repeatedly you will notice that it is necessary to wait for several second
87. j Pathfinder Radar Chartplotter Series Raytheon Pathfinder Radar Chartplotter Series Service Manual 0000 Part 2 Radome Scanner Units Document No 83139 Warning CE Marking of Equipment Replac ement Parts Ifthe Raytheon Autohelm equipment under repair test calibration installation or setting to work carries the European CE mark only parts and components supplied or approved for such use by Raytheon should be used in order to maintain compliance with the relevant CE requirements Incorporation use or attachment by any means of parts or components not supplied for or not approved for such use by Raytheon or if supplied or approved for use by Raytheon not properly fitted in accordance with instructions published provided or recommended by Raytheon may cause the equipment to malfunction and in particular to become unsafe or to no longer meet the relevant CE requirements In these circumstances Raytheon Marine Company excludes liability to the fullest extent permissible in law for any loss or damage including any liability for its contribution to such loss or damage by its negligent acts or omissions Service Manual 83139 1 PR Part2 Raytheon Pathfinder Radar Chartplotter Series Safety Notices This radar chartplotter equipment must be installed and operated in accordance with the instruc
88. k PWO and PWI are CN2 11 PWI as follows of correct status for the 80ns pulse 1 8 to 3 4 nm range 0 0 range selected if not 250ns pulse 1 5 and 3 nm range 1 0 i Check CN2 cable and 700ns pulse 6nm to max range 0 1 connector are sound 700ns pulse not used 1 1 ii If not faulty IF board CN2 8 PRI PLS Normally high 10us 0 5us low This signal is not visible During 60 second on period going pulse Frequency will be during the 70 second if signal is not present varied according to pulse width countdown but is switched i Check CN2 cable and 80ns PRF 2250Hz for the next 60 seconds connector are sound 200ns PRF 1500Hz ii If not faulty IF board 700ns PRF 750Hz Rising edge triggers modulator pulse CN2 3 HEATER OK An output which indicates that Should be a logic High in If signal is Low magnetron heater is connected standby and transmit i Check heater voltage on and drawing minimum current modes CN7 first ii I OK then connect a 120hm 4W resistor across CN7 socket and re check CN2 3 voltage iii If still bad disconnect IF ribbon cable and recheck CN2 3 iv If still bad then Mod psu PCB is faulty if OK then fault at IF receiver short CN2 17 MOD_ISENSE Indicates peak magnitude of This should be low in Connect a dummy load to magnetron anode current and thus standby In transmit mode CN In transmit mode indicates approximately peak R F refer to Modulator Technical check voltage is in the power output Description in C
89. lected by the same antenna used to transmit the original pulse and is routed through the circulatorto the low noise converter LNC These comparatively low level signals are amplified by a low noise transistor in order to maintain signal noise performance and are mixed down to an IF frequency of 60MHz nominal for further amplification and subsequent detection Service Manual 83139 1 Ch2 3 Part 2 N CH g lt o Raytheon Pathfinder Radar Chartplotter Series The IF receiver board provides further low noise amplification and adjustable gain to maximise the dynamic range dynamic attenuation control in the presence of clutter target and range variations The IF board also includes a logarithmic detection stage with approximately 50dB dynamic range which provides a compressed signal output in terms of dB input power versus output Voltage level Various filtering stages are also employed in the IF Receiver to provide optimum signal noise characteristics for the detected pulse and to provide some immunity against the bulk effects of rain The IF Receiver also provides the interface for the up link commands to the scanner including clutter and gain selection stepper motor control and display synchronisation pulse generation Receiver configuration LNCAF The basic configuration of the microwave and IF receiver circuitry is as follows Low Noise Converter LNC De Limiter IF Receiver Board E Filter
90. lues back into the used working locations of the EEprom so the scanner and display are as they were set up when they left the factory The EEprom also stores the scanner Build Standard information that is accessible through the Diagnostics Menu see chapter 4 fault finding 2 6 Antenna Rotary J oint Assembly The scanners use either 18 or 24 microstrip patch arrays The primary specifications for the antenna rotary joint assembly are as follows Parameter 18 Radome 24 Radome Operating frequency 9 410GHz 63MHz 9 410GHz 63MHz Azimuth beam angle 5 2 nom 3 9 nom Elevation beam angle lt 28 nom lt 28 nom Antennae gain across bandwidth 22 3dB nom 22 9dB nom Return loss gt 15 0dB gt 15 0dB Sidelobe levels gt 22 0dBc gt 22 0dBc Bandwidth requirements are defined by the magnetron uncertainty Figure 15 Antenna Outline Performance Service Manual 83139 1 Ch2 17 Part 2 N CH 2 Q g lt o Raytheon Pathfinder Radar Chartplotter Series 2 7 Scanner Display Connection The scanner display interface is a universal link between any display and any scanner It consists of asingle multi core cable with a single moulded plug at the display and multiple connections at the scanner Video Serial bus PRI Azimuth Ships heading pulse Power A moulded plug at the display provides the necessary sealing against the environment whereas at the scanner this is prov
91. n the radar and allow to warm up for ten minutes with the TUNE function in automatic mode in short pulse 3 4 nm range for example Now switch to medium range 1 1 2 nm the display should take a few rotations to reach optimum TUNE Now switch back to short range the display should be tuned instantly a delay in tuning could indicate an EEprom write failure The other write operations occur when the ADVANCED SET UP menu items are adjusted and if the SCANNER SETTINGS hidden menu items are changed A write failure here would be indicated if the newly adjusted value is lost when the unit is powered off and on again In either case the scanner IF Receiver PCB should be replaced 18 19 FACTORY SETUP IF TUNED These tests are performed simultaneously once only when the system is powered up They check thatthe IF receiver PCB in the scanner has been set up correctly at the factory These items should always be PASS unless the EEprom has become corrupted or if by some event an incorrect IF receiver PCB is fitted In any case if either indicate a FAIL then the scanner IF Receiver PCB should be replaced 20 21 22 MODULATOR CURRENT SP MP LP When the Radar is running in transmit mode the display monitors the modulator current that the magnetron is drawing for each pulse length that has been used This value is then displayed next to the appropriate pulse length SP short pulse MP medium pulse LP Long pulse If a particular pul
92. nction Status during standby Fault Checks CN5 1 BZ Opto emitter With antenna rotating No pulse connection signal should normally i check 5V on pin 2 and GND on pin 3 first be high with a low going ii check CN5 connector is sound 100ms pulse once iii If OK then faulty opto PCB every 2 5 secs CN5 2 5V 5V to Opto LED 4 7 to 5 3V If 5V not present anode and collector i Disconnect opto connector and check connection Receiver Supply outputs ii If supply outputs OK and 5V still not present faulty mod psu iii If 5V now OK then must be a short on opto PCB assembly replace opto PCB CN5 3 SHGND Current limited GND Check GND continuity Opto LED cathode GND connection Ships Heading Output Ref Signal Name Function Status during standby Fault Checks CN2 15 SHP IN Output of SHP pulse With antenna rotating If signal not present signal should normally i Check CN5 signals OK first be high with a low going ii If OK then remove IF PCB ribbon cable 100ms pulse once from CN2 and recheck signal at pin 15 every 2 5 sec s iii If OK now then mod psu PCB is good iv If not replace mod psu PCB Stepper Motor Control Ref Signal Name Function Status during standby Fault Checks CN2 12 MOTOR EN N Enable Motor Should be low during If not Low 70 sec countdown and i Disconnect ribbon connector at CN2 and for 60 sec s afterwards check pin 12 on cable is low if not then fault Else will go high to on IF PCB disable motor ii Check connection to CN2
93. ng key sequence Press the MENU key Press the RADAR SET UP softkey Press and hold ENTER for approx 5 seconds Select BUILT IN TEST softkey Probable fault symptom s i No radar picture or video noise bad PRI or AZ_SHP ii Missing or jumping sectors bad AZ_SHP iii Spoke like interference and or blank hole to 0 7nm bad PRI 6 x i NS check all the following items in the order h Check 8 way connector at SK1 in the s shown for PASS FAIL radome and inter unit cable for o NOTE See main text for further damage Pins 1 amp 2 5 amp 6 repair replace as necessary Also check continuity of inter unit cable and from Pins 4 7 and 12 13 of display socket descriptions of diagnostics menu Y to CPU PCB CABLE TEST STATUS i SCANNER RESET 50ANNERAESET LPAILIF VALUE READS 1 OR MORE TIMES i AI RECEIVER SUPPLY FAILURE RECEIVER SUPPLY 12V e T RECEIVER SUPPLY 5 9V SHIP HEADING SENSOR FAIL Probable fault symptom Radar sweep appears 0 erratic repeatedly This indicates that the display is not receiving ships heading pulses RECEIVER SUPPLY 5V stopping SHIP HEADING SENSOR Check Magnetron FAIL Interface section CN7 1 MAGNETRON HEATER _ lll L l wp h d 6 gt CN7 2 and signals j HEATER_EN_N CN2 4 and HEATER_OK CN2 3
94. or LNC is fitted as the result of a service operation the Tune preset setting may need to be adjusted Important The Magnetrons fitted to these radars will be either of Toshiba or NJRC manufacturer If a magnetron is to be replaced one of the same type and same manufacturer must be selected 4 3 Bearing Alignment The bearing alignment is normally set when you first install your system and is described in Section 6 9 Bearing Alignment of the Owner s Handbook It should be checked periodically The bearing alignment corrects for display azimuth error It can be set to a value in the range 180 to 180 in increments of 0 5 4 4 Display Timing If you extended the inter unit cable you should have set the display timing when you first installed your system as described in Section 6 9 Display Timing Adjustment of the Owner s Handbook This will need to be repeated for extended inter unit cables if the Scanner Reset has been carried out If you wish to turn off Main Bang Suppression when adjusting the display timing press the MBS soft key to toggle the setting MBS is resetto ON automatically when you finish adjusting the display timing Service Manual 83139 1 Ch4 45 Raytheon Pathfinder Radar Chartplotter Series 4 5 Tune Preset If the IF receiver PCB LNC assembly or the Magnetron has been replaced then the Tune Preset should be checked and adjusted if necessary as described in Section 5 5 Tune Preset of the Owner s Han
95. ors to tailor the bandwidth characteristics of the circuit 14 Service Manual 83139 1 Ch2 Chapter 2 Technical Description Raytheon IF Bandwidth switching between 12MHz and 3MHZ is configured to provide matched filtering for the shorter 80ns and 250ns pulses respectively which is automatically set when the Radar range is adjusted Gain is increased accordingly to maintain a relatively constant noise power at the receiver output A switched video filter is used in conjunction with the 3MHz IF filter to provide matched filtering for the longest 700nS pulse This is typically 0 69MHz wide Remaining variations in noise power as a consequence of the different signal bandwidths i e noise power is directly proportional to bandwidth are adjusted in the display A fast time constant circuit is used to provide a continuously variable high pass filter to provide some immunity against the bulk effects of rain N B The variable inductor coils L4 L10 and L11 are preset at the factory They require specialist equipment for tuning and must not be adjusted by the service engineer Part 2 Chapter 2 The PRI rates and video noise can be observed at the appropriate connectors see interface section for the different range settings as follows Summary of bandwidths pulse widths and PRI rates Radar Range Setting IFBW Video BW Pulse width used PRI rate Video Noise level 0 125 to 0 75 nm 12MHz 12MHz 80ns 2250 Hz gt 500mV pk pk 1
96. pplies on the Mod PSU See Receiver Power Supply Outputtable in Mod PSU PCB Checklist 9 If OK proceed to next test 2 Check power to IF PCB Remove IF metal cover plate Check if 5 V is present at P4 2 If it is present the IF receiver is assumed to have a faulty communications circuit and should be replaced Otherwise if 5V was not measured then check replace the ribbon cable assembly connected to P4 Service Manual 83139 1 Ch3 23 Raytheon Pathfinder Radar Chartplotter Series Check List 3 Radar Target Image blank faulty missing radar targets no radar scan poor performance etc External Checks 1 Check that the Radome lid is fitted lf the Radome is run in bright daylight with the lid removed the ship s heading Opto PCB may generate additional pulses causing the radar sweep to reset 2 It may be desirable to carry out a full Reset of the Radar system before continuing with the checks indeed this may cure the fault Note however that this will also reset Bearing Alignment Display Timing Tune and STC Preset to their factory defaults and therefore these may need to be set up again as for a new installation To perform a system reset Power up the radar system and allow the 70 second countdown period to complete Press MENU and select SYSTEM SET UP Press and hold the MENU key until the Reset countdown has reached zero Release the key the radar system will reset and restart the 70 second countdown
97. r Build ID 5 6 g J V308 0 f Tig CLA ge apex R35 A354 Power Motor R226 R354 R22 R353 Pwi 29 7 TP150 Ses 2018 100R T Maia X 1TP443 see tabia 2kW stepper 1KO 1X 5K6 1 OR NF A 74HCO2 Ki A436 4 p26pr P268 4kW stepper 5K6 1 10K 1 OR NF 4 5v 2 6kW stepper 6K8 1 5K6 1 OR NF R228 158 MOD_SENSEZ FB1 5v 1 4kw 3 phase OR NF IF 5V 1 60 5vL 108 EE ae BkW 3 phase on NF FB AD BR227 c9 C125 cao SO TAN see table TITLE AR 4 7u o 1u O 1u MODULATOR PSU BOARD MODULATOR GND DERIVED FROM DRAWING No ISSUE SHEET zem 4346 027 E 4of 6 60 Service Manual 83139 1 Ch6 Chapter 6 Drawings Raytheon Modulator PSU Board 3 Phase DC brushless motor drive Part 2 Oo CH c lt o Not applicable to Radome Scanner Radars TITLE MODULATOR PSU BOARD 3 PHASE DC BRUSHLESS MOTOR DRIVE DERIVED FROM DRAWING No ISSUE SHEET D3909 3 4346 027 E 5 of 6 Service Manual 83139 1 Ch6 61 Raytheon Pathfinder Radar Chartplotter Series Modulator PSU Board Stepper Motor Drive R343 47R Rotor TP3341 Enhanced Stepper Motor Drive No Fit TP332 1 8 PI TP330 1 14
98. r during the 70 second warm up period Peak detector D55 etc detects the peak pulsed magnetron current flow and derives the signal MOD_ISENSE which gives some indication of the transmit power Note that the presence of the pulse shaping circuitry alone results in some current flow and so this indicator must be interpreted with care System Parameter Units 80ns PulseWidth 250ns Pulse Width 700ns Pulse Width Conditions Power Min Max Min Max Min Max 2kW MOD ISENSE V 1 9 3 0 2 2 3 0 2 2 3 0 4kW MOD ISENSE V 1 3 24 1 6 24 1 8 24 Figure 7 MOD ISENSE Voltage Service Manual 83139 1 Ch2 11 Part 2 N CH K G Z o Raytheon Pathfinder Radar Chartplotter Series Modulator Clock PRI_PLS 1 P R Frequency 10us 0 5us 3 5V PRI_PLS 0 0 5V Figure 8 Modulator clock PRI PLS Ships Heading Sensor The ships heading sensor is used to indicate that the antenna is aligned with the vessels fore and aft line It provides one output pulse per antenna revolution This information is utilised by the IF receiver to synchronise the radar output to the ships heading A slotted optical transducer is interrupted by the principal gear of the antenna rotary joint assembly This results in a negative going pulse at CN5 1 This pulse is variable in amplitude with ambient lighting level and device tolerance This pulse is conditioned by the interface formed by U23 and reappears as SHP_IN a
99. s P1 LNC connector 20 way SAMTEC CLH 110 F D DV P 7 pins used only P4 Mod IF interconnect 18 way Picoflex ribbon connector 12 Service Manual 83139 1 Ch2 Chapter 2 Technical Description Raytheon Display Connector SK1 Part 2 Chapter 2 Ref Signal Name Type State Function SK1 1 AZ GHP OUTB clock differential pair normally high low going clock A differential output pair providing SK1 2 AZ SHP OUT output normally low high going clock azimuth pulses to synchronise antenna 0 5 0V position with the display 10us duration at approximately 820 Hz The SHP ships heading position pulse is superimposed on the signal once per antenna revolution 30us pulse every 2 5 secs SK1 3 SER_IOB digital comms 2 2V nom DC bias An RS485 Bi directional serial SK1 4 SER 10 differential pair 2 8 V nom DC bias communications link operating at 19 2 bi directional kBaud It provides control of the scanner operation and monitoring functions from the Radar display SK1 5 PRI OUTB clock differential pair normally low high going clock A differential output pair providing PRI SK1 6 PRI OUT output normally high low going clock Pulse Repetition Interval pulses to 0 5 0V synchronise the firing of the transmitter with the display video Rate is according to range setting SK1 7 VIDEO GND Analogue Video AC coupled 1 75V max peak The raw Radar video signal from the SK1 8 VIDEO output signal into 7
100. s are disconnected damaged corroded at connector CN6 of the MOD PSU PCB Alternatively failure of the PSU units 6 3V heater supply is suspected This test is also part of the combined Status Report 1 test and is performed once every 4 secs Service Manual 83139 1 Ch3 41 Part 2 c A EZ g lt o Raytheon Pathfinder Radar Chartplotter Series 16 17 EEPROM WRITE READ If a FAIL status is indicated it means an error has occurred with a read or write operation from the scanner EEprom within the last 4 seconds i e since the test was last performed as this test is also part of the combined Status Report 1 test which is performed once every 4 sec s It is unlikely that an intermittent or occasional error would occur and as the information is updated at 4 sec intervals the service engineer is unlikely to enter the menu at the right time to spot such errors Therefore if a FAIL is indicated check the following Read errors The majority of the EEprom read operations occur at initial power up A read failure would mean that the display would not show correct scanner description information size power build standard etc and the automatic TUNE function would not work Write errors The display writes to the scanner EEprom when the transmit pulse length is changed e g from 3 4 to 1 1 2 nm and from 3nm to 6nm to store the current FINE TUNE value for the automatic tune function To check operation switch o
101. s after switching off before the unit can be switched on again from the POWER key This is quite normal 3 3 Built in Testing Diagnostics The Pathfinder series Radars and Chartplotters incorporate a diagnostics menu to aid the service engineer in finding some of the possible faults that could occur with the system The diagnostics menu can be accessed from either standby or transmit modes by the following key sequence Press the MENU key Press the RADAR SET UP or CHART SET UPsoft key Press and hold ENTER for approximately 5 seconds a new set of soft key options will appear at the bottom of the screen Select BUILT IN TEST Note Although all display variants can access the diagnostic menu a repeater display or a RC520 will only give very limited data See Diagnostics Menu detailed description at the end of this chapter section 3 6 for a full desciption of its features 3 4 Master and Repeater LCD Displays When two displays are connected via the HSB bus it is necessary prior to isolating the fault to the scanner or the display to determine which display is the master i e connected to the scanner In the event that the rear of the units are not easily accessible then this may be determined by powering both displays on and waiting for the WARMING UP banner to count down to zero Power one of the two units off 20 Service Manual 83139 1 Ch3 Chapter 3 Fault Finding Raytheon Amessage HSB LOST will be displayed and t
102. s the SYSTEM SET UP soft key press and hold MENU for 5 seconds Service Manual 83139 1 Ch3 43 Raytheon Pathfinder Radar Chartplotter Series e Nx S U a 2 o 44 Service Manual 83139 1 Ch3 Chapter 4 Setting up Procedures Raytheon Chapter 4 Setting up Procedures 4 1 Fitting of Replacement IF Receiver PCB If anew IF PCB is fitted to the Radar scanner as the result of a service operation it will not have the scanner size and Modulator Power items stored in its EEprom as the IF receiver is supplied as a common Spares item for all Pathfinder Radars In this case the service engineer should set these by using the following procedure Select Scanner Settings Menu by following hidden key press Press MENU Select RADAR SET UP e Press and hold CLEAR for approx 5 secs Select SCANNER SETTINGS soft key Scroll down the Menu using the trackpad and adjust the Scanner Size and Modulator Power using the softkeys For current systems the RL72 RL72RC is 18 and 2KW the RL74 RL74RC is 24 and 4KW Press ENTER to store the values and leave the menu e Check that the maximum selectable Radar range is now 24nm RL72 RL72RC and 48nm RL RL74 RL74RC The IF PCB also stores the Bearing Alignment Display Timing and Tune Preset Data These items should be checked and adjusted as necessary This is described below Part2 Chapter 4 4 2 Fitting of Replacement Magnetron or LNC If a new Magnetron
103. s to Picoflex ribbon cable connectors are specified these can usually be made by carefully probing the slots in the cable connector Pin 1 is marked by the red cable stripe 5 Video Noise tests A number of diagnostic procedures make reference to whether video noise can be observed The procedure for verifying this is as follows With the Sea Clutter and Gain set to manual as the Gain is gradually increased the screen should show increasing speckle corresponding to increased video noise indicating that the IF receiver is driving the video signal Under normal circumstances the range of adjustment over which the screen goes from white to black is around 1096 of Gain adjustment If the video signal is not present this will occur over 1 or 2 96 of Gain adjustment 6 Normal Motor Operation When the radar is switched on the motor commences rotation The motor starts at a reduced speed for a few seconds and then accelerates to full speed 24 r p m The motor runs for the full warm up countdown period and for approximately 1 minute afterwards with the unit in standby This is done to allow the microprocessor on the IF receiver to Service Manual 83139 1 Ch3 19 Part 2 c CH 2 Q g lt o Raytheon Pathfinder Radar Chartplotter Series measure the rotation speed of the antenna and then set the correct rate of Azimuth pulses for synchronising the display This also allows the display sweep to be in sync immediately if transm
104. se cover to expose underside of MOD PSU PCB Support unit e g by holding casting gently in a large vice on its side so that antenna is free to rotate and the MOD PSU PCB interfaces can be probed For tests in stand by mode only the MOD PSU PCB may be removed from the core and placed on a suitable insulated surface and the connections re made to the core remotely if this is more convenient Aspare 10m light interunit cable should now be used to connect the core to the display unit e Turn power on Warning Dangerous high voltages exist in the core assembly avoid touching MOD PSU PCB with fingers whilst powered Magnetron Dummy Load For some of the fault checks in this section it may be required to enable transmit mode to allow proper diagnosis Due to the hazard from the electromagnetic radiation from the magnetron and antenna this should not be done However with the magnetron disconnected at CN6 it is safe to connect a dummy load to CN6 to electrically simulate the magnetron load A dummy load may be constructed and connected to CN6 as follows A DANGER High voltage 12 onm 4W 1 5 kohm 4W CN6 1 CN6 2 GND D4095 1 Figure 17 Magnetron dummy load Note For safety reasons the 1 5k resistor must withstand up to 5 kV pulsed duty cycle 1 2000 Long wire wound parts will usually suffice In addition the load should be suitably insulated to prevent High Voltage shocks The GND connection is to the core ca
105. se length has not been used yet then it indicates NOT TESTED If there are no Radar target returns on the display or poor radar performance is experienced referring to these values may indicate if there is a magnetron problem or not 42 Service Manual 83139 1 Ch3 Chapter 3 Fault Finding Raytheon The readings should lie within the ranges given in the table below Scanner Power Pulse Length PASS Range 2kW SP 96 153 MP 112 153 LP 112 153 4kW SP 66 123 MP 81 123 LP 91 123 Figure 19 Modulator current 23 ROTATION TIME This item shows the measured rotation time of the scanner The scanner rotates at a nominal 24 rpm so the nominal rotation time should be 2 500 milliseconds This provides another useful indication that the antenna is indeed rotating correctly inside the radome A gross error in the timing would indicate the same problems as for the Ship s Heading Sensor item Part2 Chapter 3 24 STC PRESET MAX This item displays the factory set STC curve level If an STC curve problem is suspected e g targets fading as they come closer in range to the vessel then the used STC curve level may be adjusted from the Advanced Settings Menu A factory reset should be performed before making any adjustments to ensure that the scanner is in its correct initial state Ensure that the scanner is connected during this operation To perform a factory reset Put the Radar in stand by mode press the MENU key Pres
106. select logic mE Switched Logarithmic Video gt Filter Detector Filter Lineariser Lineariser Curve Splitter Autotune j Receiver MBS STC Rain Sea Gain Generation and Summing Network LNC Supplies Scanner uplink D4055 1 Figure 2 Receiver Configuration LNC IF Low Noise Converter Limiter LNC The primary function of the LNC is to provide low noise amplification of the low level signal returns and mixing to an IF frequency of 60MHz nominal The low noise amplification is provided by a single low noise FET with bias conditions and associated matching set to minimise noise figure and maximise gain and compression levels Maximum gain is required so as to minimise the noise figure contribution from subsequent stages The mixing function is carried out in an image reject mixer configuration which reduces image noise by 20dB nominal in order to minimise the degradation in overall noise figure Protection is provided in the form of three limiter diodes which are configured to become forward biased in the presence of increasing RF power NOTE There are no user dealer serviceable parts within the LNC due to its high frequency of operation 4 Service Manual 83139 1 Ch2 Chapter 2 Technical Description Raytheon Tune_V HW UP Limiter 5Volts p
107. sting the screw fixing for the magnetron cable screen wire adjacent to CN7 scocket may be used as a convenient attachment point The MOD PSU PCB must be mounted in the core for these tests to ensure adequate grounding 34 Service Manual 83139 1 Ch3 Chapter 3 Fault Finding Raytheon 00000000 00000000 CN5 SHP sensor CN2 IF Receiver connector CN4 Motor connector 12 161412108 6 4 2 123456 GOO e e e 0 e e e e QOOOOO Q Q Q Q Q Q Q 11e ail 783 1 D4093 1 Figure 18 Mod PSU Connector pins Note This PCB is conformally coated thus use of a sharp DVM probe may be required to make a Part 2 Chapter 3 good contact Pin 1 of each connector is marked with a square pad on the PCB In general perform the check in the order given or if a particular fault is suspected go to that section Ship Supply Power Input Ref Signal Name Function Status during standby Fault Checks CN1 5 BATT_IN Ships power i p 10 7 32V i Check Power cores are connected in CN1 6 correct polarity CN1 7 ii Check connector for corrosion poor CN1 8 contacts repair or replace iii If voltage is Low check ship s supply at power cable display socket is within operating spec gt 10 7V and inter unit cable is good corrosion or damaged cores could cause excessive voltage drop CN1 1 BATT_IN Ships power return CN1 2 CN1 3 CN1 4 Receiver Power Supply Output
108. t CN2 15 as a negative going pulse of approximately 5V amplitude If the antenna is rotating normally this pulse will have a repetition rate of approximately 2 5 seconds Stepper Motor Controller A stepper motor is used to rotate the antenna of all radome radar units The stepper motor is a 2 phase unipolar type driving the antenna main gear by means of a flexible belt The stepper motor is mounted to the main casting which provides heat sinking for the motor The motor frequency is determined by the frequency of the external drive clock STEP 10 which originates at the IF board micro controller and is nominally 181Hz The motor drive interface comprises U24 and associated circuitry An enable signal MOTOR_EN_N switches the motor drive on when at logic 0 The motor is connected at CN4 Pins 2 and 5 are the raw 12V motor supply only active when the high voltage PSU DC DC2 is enabled Pins 1 3 4 and 6 carry the motor winding drive signals If any winding drive signal becomes disconnected the motor will normally fail to rotate but will vibrate instead If the magnetron heater at CN6 is disconnected the motor may rotate with reduced torque 2 4 IF Receiver PCB Interface Description The Interfaces to the IF Receiver are shown in Figure 4 The individual signal functions are described below Connectors Connector Function Type SK1 Display connector for serial 8 way Molex C grid socket communications video and syncronisation timing signal
109. tenna amp rotary joint is removed see 3 above to gain access to the receiver cover screws When refitting the LNC PCB assembly take care not to damage the RF probe and ensure that 5 Service Manual 83139 1 Ch5 Chapter 5 Replacement Parts Raytheon the conductive washer is in place on the probe Do not over tighten the 5 securing screws 6 Ib in or 0 7 Nm Anew LNC PCB will require the Advanced Settings to be checked and adjusted if necessary as detailed in the Owner s Handbook in section 5 5 and 6 9 7 Drain Tube Fitting of the drain tube is described in the Owner s Handbook section 6 6 Connecting the Scanner Category B 8 Core 18 and 24 WARNING When working on the underside of the core ensure the antenna is protected from physical damage Replacement of any category B item will necessitate the removal of the core from the radome base Generally the scanner unit should be removed from its mounting to a safe location by disconnecting and removing the inter unit cable and releasing the 4 M8 bolts Protect the end of the inter unit cable Part2 Chapter 5 The core is then removed by releasing the 4 small securing screws item 24 9 Stepper Motor To disconnect the motor cable remove the lower cover and insulator see 13 below and the modulator PCB 10 Opto PCB Assembly It is recommended that the antenna and rotary joint is first removed see 3 on page 50 to obtain access to the opto P
110. tions contained in the Owner s Handbook Failure to do so can result in personal injury and or navigational inaccuracies In particular 1 High Voltage The radar scanner unit contains high voltages The radar should always be A turned off before removing the covers The scanner unit high voltage can Sancen take up to 1 minute to decay The specialised service procedures should only High voltage be Carried out by qualified service technicians 2 Electromagnetic Energy The radar scanner transmits electromagnetic energy It is important that the radar is turned off whenever personnel are required to come close to the scanner to perform work on the scanner assembly or associated equipment DANGER Non ionising Radiation Itis recommended that the radar scanner is mounted out of range of personnel above head height Avoid looking directly at the antenna as your eyes are the most sensitive part of the body to electromagnetic energy When properly installed and operated the use of this radar will conform to the requirements of ANSI IEEE C95 1 1992 Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields 3Hz to 300 GHz 3 Magnetron Persons with cardiac pacemakers must not engage in service or preventative maintenance of the radar in close proximity to the magnetron There is danger of abnormal operation of cardiac pacemakers 4 Navigation Aid This radar unit is only an aid to n
111. tor 63 Modulator PSU Board PCB layout 4kW stepper motor 64 IF Receiver Top level ee 65 IF Receiver PCB Layout EE eels beeen teg ode apte Sb Ae 66 Service Manual 83139 1 TC v Part 2 Raytheon Pathfinder Radar Chartplotter Series vi Service Manual 83139 1 TC Chapter 1 Introduction Raytheon Chapter 1 Introduction This Raytheon Service Manual contains information to assist with maintenance and service It is intended to be used by qualified Raytheon service representatives The contents of this manual as a whole relate to the Raytheon Pathfinder radar series and the associated chartplotter displays The manual is divided into several parts This part relates to the two radome scanner units e 2D 18 radome 2 kW scanner unit e 4D 24 radome 4 kW scanner unit Other parts relate to General matters and small groups of specific units Refer to the Master Table of Contents at the front of the manual for brief details of each of the other parts Further parts will be added to the manual as this family of products grows Part 2 Chapter 1 Overview Chapter 2 Contains the technical description of the radome scanner units and gives a general overview of the complete unit then brief details of each PCB or main circuit Chapter 3 Part 1 Chapter 3 provides information to isolate radar problems to either a scanner or a display
112. turned to Raytheon 4 DISPLAY SW VERSION This item indicates the software version of the PROMs on the CPU PCB in the display unit It is read once only at power up 5 SCANNER SIZE This item indicates the size of the radome antenna in inches This item is stored in the EEprom of the IF receiver PCB in the scanner itis read from the scanner once only at power up 6 MODULATOR POWER This item indicates the output power of the radome modulator and Magnetron in kW This item is stored in the EEprom ofthe IF receiver PCB in the scanner it is read from the scanner once only at power up 7 HEATER HOUR COUNT This item indicates the number of hours that the magnetron heater has been running for throughout the Radar systems life i e the sum of the standby and transmit hours It is incremented every 6 minutes 0 1 hour This item is stored in the EEprom of the IF receiver PCB in the scanner itis read from the scanner once only at power up 8 DISPLAY COMMS A display communications test is performed at power up to check the display to scanner communications link driver is functioning OK If this shows a FAIL status then a SCANNER NOT RESPONDING message will be shown on power up Refer to Checklist 2 for further diagnosis 9 CABLE TEST STATUS This item shows the status of the cable test function This test checks that the PRI differential pair and the AZimuth_SHP pair of wires linking the display to the scanner are making a good conne
113. tween the PSU board PL7 and the CPU board J7 is connected with no breaks in any cores 2 Power the display and press the Power key With a ground reference on J7 2 PGND of the cable check that the voltages shown in Checklist 10 for CPU Power J7 are present If all are correct then proceed to next test else there is a failure of the PSU PCB Scanner Internal Checks A DANGER Part 2 Chapter 3 Switch the system off at the boat s distribution panel and disconnect the scanner cables to allow the scanner unit to be removed to a dry place were it can be worked upon Remove the radome cover and microwave core assembly Note The 4 foot seals must always be renewed to guarantee the water seal integrity of the radome unit IF Receiver connector 1 2 3 4 5 6 7 8 Keel 99000000 Figure 16 IF Receiver connector SK1 D4094 1 Scanner Check 1 Scanner communications checklist 1 Check connections at scanner 8 way connector with the radome cover removed Particularly check pin 3 blue and pin 4 green for damage or corrosion If faulty repair or replace 8 way Molex connector p n R126 2 Measure resistance between 8 way Molex connector SK1 3 and SK1 4 and check for approximately 160 w If resistance measurement wrong then replace IF PCB assembly If correct then fault must lie within the inter unit scanner cable replace Scanner Check 2 Scanner power checklist 1 Check the internal receiver power su
114. unit This Chapter then gives further fault finding procedures specifically for the radome scanner units utilising the built in diagnostics flow charts and monitoring points to reduce the problem to PCB or sub unit level Chapter 4 Contains any setting up that may be necessary after service or fitting of a spare part Chapter 5 Contains the spare parts lists that are cross referenced to the exploded view drawings to aid identification These drawings are also used for dismantling and assembly Additional notes supplement the drawings Chapter 6 Contains the scanner unit interconnection drawing circuit diagrams and their associated layouts Service Manual 83139 1 Ch1 1 Raytheon Pathfinder Radar Chartplotter Series Part 2 wen den Ld a G lt o 2 Service Manual 83139 1 Ch1 Chapter 2 Technical Description Raytheon Chapter 2 Technical Descnption 2 1 Overview Scanner configuration Antenna Rotary joint assembly Motor LG p Transition 2 4kW 60dBm maximum N 5 Ta Low Noise U M agnetron Converter a Circulator 20dB nominal Modulator PSU board lt IF Receiver micro I O board Ships power Scanner uplink connection D4054 1 Figure 1 Scanner Block Diagram The system comprises the functional blocks as shown in the above diagram The basis of operation is as follows The

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