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SERVICE MANUAL No.326 NP5A2X Chassis

Contents

1. through improper servicing SYMBOL STOCK 23 10114139 Carbon film 2200 5 SRDAP D2 8917 0110271 Metal oxide film 12k2 5 RD2PB C6 315 0114041 Carbon film 100 5 SRD P 5 R541 0114167 Carbon film 1 8 5 sRDuP E5 R724 0114165 Carbon film 1 5kQ 5 SRDXP E2 921 0114281 Carbon film 100kQ 5 SRDYP 0114147 Carbon film 4700 5 SRDMP 5 R542 0114061 Carbon film lesn 15 snpuP E5 R725 0114283 Carbon film 120kQ 5 5 D2 8925 0114281 Carbon film 100kQ 5 SRDYP 0114145 Carbon film 13900 5 SRDXP x A5 R550 0114131 Carbon film 1000 25 srDuP R726 0114217 Carbonfilm 47kQ 5 5 D2 R926 0114281 Carbon 100kQ 5 SRDYP 0114057 Carbon 470 25 SRDYP AA7 544 0159276 Control 10k9 B COLOR E5 R727 0114181 Carbon film 6 8kQ 5 SRDYP 02 R927 0114161 Carbon film 1kQ 5 SRDXP 0114165 Carbon film 1 5k2 45 SROXP 7 9545 0151264 Control 10k2 B Sub COL ADS R729 0119505 Metal oxide film 2 22 5 E2 R928 0137611 Carbon film 2 7k2 5 SRDYSD B5 R321 0114211 Carbon 27kQ 5 SRDXP R601 0114175 Carbon film 32kQ 25 SRDXP AES R730 0114281 Carbon film 100k2 5 SRD P AE2 929 0134129 Composition 2200 5 RCAGF 85 R322 0114217 Carbon fim 47kQ 25 SRDXP 9602 0114173 Car
2. CR501 2331351 Silicon 1S2076 182473H B1 L201 2140885 Mold IFT id i B7 502 12331351 Silicon 1S2076 1S2473H B1 1202 2140885 Mold IFT 2730063 Earphone CR 320 A7 CR503 2331351 Silicon 152076 192473H 1206 2141454 Mold IFT 2670671 Earphone jack CR 320 A7 CR505 2331351 Silicon 1152076 152473 B4 1207 2141562 Fixed inductor 18 B7 506 2331351 Silicon 152076 192473H B5 1209 2121204 Filter coil 45MHz 2720058 Fuse 4A UL A7 CR507 2331351 Silicon 12076 152473H L210 2121203 Filter coil 83MHz 3218351 Front frame assembly 316 5 CR601 2330351 Silicon 152076 B5 L211 2141544 Trap coil 4 5MHz 3218352 Front frame assembly CR 320 USA E4 CR602 12330307 Silicon AWO1 08 C6 L301 2121304 Peaking 1 8uH 3218353 Front frame assembly CR 320 E6 CR603 12330251 Silicon VO6C C6 L303 2121699 Peaking 39uH CANADA 701 0575001 Germanium IN34A C6 1305 2121702 Peaking 56uH r CR702 0575001 Germanium IN34A 11306 2121221 Peaking 2 2 3258331 Knob Auto 316 3 5 CR703 2330564 Silicon 11307 2120251 Peaking 3256972 Knob Auto CR 320 2 05 CR704 2330191 Silicon SB 2C C5 L308 2120482 Filter coil 1004H 3257303 Knob Volume 316 5 705 2330351 Silicon 192076 11401 12121693 Peaking 12uH 3257303 Knob Tint Color Bright contr
3. PETRA Cer E 3 rS i UAM T in 00 ies E Wu au zo 3er ATI i 1 gengan aW cae mee mreana A i TERE p 3 ed UP 2622 R604 2 2 3307 AWO 966 22 IUW 4 T 4 wor nen SU HB 5 ROI 19K 603 1729149 gt E 129 me 1 0068 aw 8 eg gano can T hoop i J TREO3 TR706 i TREO TR605 _ 2SB546A Q L 25 458 GG y SET 25698 nv v BLANKING bi i x y 4 ROOM EUREN URN Seri gt ole TRTOB j MVLIMT SWITCH 7 re arcam i rt pe 08 HATOI HD Ero ND ie M VDET MODULE 190 E m FIR z a R902 BH m m 27730 152076 9733 33 200 45 erm amend 2 18 Pwe E CR 905
4. N ict h 1 picture on the screen SIGNAL ALIGNMENT ALIGNMENT ALIGNMENT PROCEDURE i HI A CIRCUIT V LINEALTY AN Antenna terminal Chroma Color VR R544 Adjust the color tint cont to click position s 8 Tint VR R523 d E AN Tightening ring Color i Cont VR R334 b 8 FOCUS ADJUSTMENT E i generator i Receive broadcasting and adjust the focus VR R751 so SE magnet rings B 7 Pa that the best focus can be obtained for all over the Purity magnet rings C 4pole magnet rings A Connect the TP43 and P1 by jamper wire also connect the 22k between TP45 and ground surface of the image in a bright condition for static convergence poene EN Chroma 53 i 1 Loon Release the jamper wire and 22k41 1 d 10 surface 2 Disconnect G plug from P3 on the signal PWB and bring the magenta belt in the center of the screen Fig 6 A Reduce the color impurity areas on the right and left sides sliding the deflection yoke back ward Fig 6 3 After minimizing the magnetic intensity of the purity magnet bring the long and the short tabs together turn the purity magnet ring so that the color impurity areas on both sides become equal Fig 6 4 Insert the wedge between the deflection yoke and color impurity on the right and left sides disappear roughly at the same time and lock the yoke in tha
5. Suiustnent V 7 deflection yoke or down and right or left Then i 0 lock SUD 2 i E the 4 pole and 6 pole magnet rings of C F magnet fix the deflection yoke with three wedges that the deflection yoke is fixed securely assembly The 4 pole magnet rings are used for red At first slowly insert a wedge between the deflection and blue alignment and the 6 pole magnet rings for yoke and the CPT funnel rightly from the direction of the adjustment of red blue and green 12 o clock and merge the red and blue vertical lines a 2 Perform the following adjustment while paying cese PE FINA NA j at top and bottom of the screen and merge the red i in t otatin a IAEA ee ke and blue horizontal lines on the right and left sides toward or away from each other rings together of the screen Fig 7 3 Prepare three wedges and fill their grooves with silicon gum Wedgelwith silicon rubber 4 When blue is outside of red on the right side of the Fig 9 8 screen and a lt b insert a wedge with its groove filled More thea with silicon gum between the deflection yoke and a _ OMY the CPT funnel from the direction of 3 o clock so that a b Fig 9 5 When red is outside of blue on the left side of the screen and a gt b insert a wedge with its groove filled with silicon gum from the direction of 9 o clock so that a b Fig 10
6. uada ud Ud D E R629 0114181 Carbon film 6 8 0 5 SRD P R861 0114141 Carbon film 12700 45 SRDXP ES TR706 2320591 Silicon 28458 8 0 50 SRDAP R630 0114221 Carbon film 68k2 5 SRDLP C7 R862 0151286 Control 5000 8 RV 16 05 707 2320647 Silicon 2sc1213 ae eos eri m DM ES R631 0114223 Carbon film 82k2 5 SRDYP C7 863 0114169 Carbonfilm 2 2kQ 45 SRD P D6 TR708 2390022 Silicon M21C Y AGE Ee i e SRDMP 05 R632 0114203 Carbon film 12kQ 25 SRDXP R864 10114169 Carbon film 2 2kQ 5 ISRDAP 287 TR851 2321221 Silicon 2SC1514 Bes neg E un p SRDAN E4 R633 0114001 Carbon film 2290 5 SRDLP 2 08 865 0151288 Control 2kQ B RV 16 588 852 2321221 Silicon 25 1514 d sad ei Xue SRDMP 6 R634 0119508 Metal oxide film 562 25 R867 0134099 Composition 5 6kQ 5 RC GF B7 853 2321221 Silicon 25 1514 6 R512 10114143 SOAT E R635 0114175 Carbon film 3 9 5 SRDXP amp B8 868 0134091 Composition 2 7k2 5 RCAGF 4 E2 TR901 2321264 Silicon CU12E ce SROMP ae R636 0119507 Metal oxide film 100 5 87 R869 0134091 Composition 2 7kQ 5 502 TR903 2321322 Silicon 2 844 E m s R637 0110151 Metal oxide film 1 8k2 5 RD1PB c8 R870 0134177 Composition 470kQ 5 RCA4GF A
7. M2IC Y Ea ral 0 014300 TOUR EE HO 5535 00 uy T 70 rc 79704 C720 PTOL TR70 08704 2268 4 0 5 SE NS L S R736 PTO R632 tev T C7 0 5 12K fo TRTOS grar T C717 718 K TROT s901 Tery s C8 0039 630 x2 halb CENTER 220P 4 000P iK I P T703 00 crs 8 ARA A 0 5 ne 680 0 01 crtal IMS RTI sh 0 820 500 d f j 0 032 9031 022 as 4 el I pem TERTIO 150 iw QUA um bii vee 9 1902 E o eni M90 HMSIOI VSI C736 VOLTAGE SETTING MODULE SS E ec Peps i 25C1 62WTOYD 6K J 12V REG l wE Qa wd FR EI MET C604 SOKA H 01 EL ee AT ni TR903 904 TR9OS TREO EIN 2548440x 2 280401A 296458 y 254673 6 0 22 90 2900974 2s 46A O 2585464 B D ascase HASI POWER REG 22 2T D 2 oe ay V PRE ORIVE V DRIVE OUT OUT BLANKING Lom THEO gt ccena nasi commis E 2 2 E 4 5 6 PRODUCT SAFETY NOTE SHADED COMPONENTS HAVE SPECIAL CHARACTERISTICS IMPORTANT TO SAFETY BEFORE REPLACING ANY OF THESE COMPONENTS READ CAREFULLY THE PRODUCT SAFETY NOTICE OF THIS SERVICE MANUAL DON T DEGRADE THE SAFETY OF THE RECEIVER THROU
8. MSO R740 FROM SIGNAL PWB 75 yose R921 IK HMSIOI VSI 5503 SK B 33 ENS A 5 uw VOLTAGE SETTING MODULE 1 25 HS 7 a7 330 25 Jd f 7 760 CRON peos K 7 6 iw 84 SOTE E C916 R926 R603 2 x E 4 100K 39K 9 21 C92 SOK A A y co ii ou Bes lei DSS teno Sw s J TR903 904 TR905 TREO NN TR602 wt Y 8 CR Si6 js without CS CBIG C30 R580 E 254844 Dx 2 250401 280958 25 673 0 Res REZO TR603 R604 TR605 TR7O6 PL SOI F 050 D T402 J451 CONNECTOR 0 22 1514 25D40A amp D 298546A 25 458 TOR PHASE DEL POWER REG v osc PEOR V PRE DRIVE E 2 mE v OUT 0 2 v 0Y R539 540 R541 RAZ EEE ih de Da ee m 2 3 4 5 6 7 8 21 LACEMENT PARTS LIST NOTE PLACE means the place of each part in the circuit diagram PRODUCT SAFETY NOTE Components marked with a A have special characteristics important to safety Before replacing any of REPLAC E these components read carefully the PRODUCT SAFETY NOTICE of this Service Manual Don t degrade the safety of the receiver marked parts are only use for CR 320 i through improper servicing SYMBOL STOCK NO NO 0244565 STOCK NO SYMBOL STOCK N
9. or 119 2076 25V Te x Focus BOX T TREO NC 2 jd depo 00 00 220 1 A m i3 TK t T ri 2 nus NEA CRNO i io 47 E d ie EPA i 221 0033 E ru 33 160 WR it H lade L E s TESA ddr Lt T TR 905 5 3 ne Aa e Rx Fiore MI E wf y AO CRM 7 1 oT su s MO a TO SIONAL li PWB 83 E 10dK 9 3 4 HM 9101 VS mm VOLTAGE SETTING MODULE 5 3 THO e N TRIOI TR903 904 TRIOS TR907 TR7OS SABT2A D P esCue2wTIC D 1 a brao 2546444 2 2809A ERROR E i2v o D Sy 2 3 SIGNAL BOARD Mem me 1893 C403 226294 y 120 Mc Esami ve cci ter p iato LL YO POWER B DEF oF Roos 14404 con 215 Lom caon 8807 0 ico Ging nm Mum o WS 940 10 25 m 8094 op 19 Re qoa p
10. 10 PURITY ADJUSTMENT 1 12 If the movement is too large the focus will CENTER OF THE SCREEN 6 Slide the deflection yoke slowly backward until the Vertical 4 pole adjust by sliding Horizontal 4 pole adjust by rotating i Blue and Red magnet rings B R and Green magnet rings See that all the lines are converged at the center part if not repeat step 1 and 2 pale grae m 12 DYNAMIC CONVERGENCE ALIGNMENT which was inserted in Step 4 or Step 5 that is Fio 6 B The outer edges of the picture from the directions of 7 o clock and 11 o clock in Lan the case of Step 4 and 1 o clock and 5 o clock in 1 When the static convergence alignment is completed the case of Step 5 fix the wedges by means of the misconvergence on the screen appear as shown in 1 Fig 9 A adhesive tape The wedges and tape should be more 11 STATIC CONVERGENCE ALIGNMENT W 2 1 pt ch ev G RG than 20mm 3 4 away from the anode cap e ae b dM dea d 9 7 Pull out the wedge that was inserted from the The center part of the screen Mn at the outer edges of the picture is done by tilting EN i
11. and consequently the power T hod 7 056 TRIOS 904 TRIOS 254844 D 2 PHASE OFT 250409 POVLA supply voltage voltage drops to 30 50V The SCR TR708 has a property of continuing to conduct as long as a holding current is present once it is caused to conduct That is to say that once TR708 is caused to conduct it will remain conductive and continue the action of this hold down circuit until the power supply is switched off Fig 2 nnn m SHEER YS Use HITACHI specified components for replacements of such components which have some effect more or less over high voltage rising Further confirm without fail that hold down circuit can operate correctly Components High Voltage hold down Circuit C716 C721 FBT TR708 C746 C717 M901 DY M701 C747 C718 C728 R710 CR714 C748 C719 C729 R711 CR910 R748 C720 C743 R732 912 R749 Caution never disassemble M701 but exchange M701 all at once when you replace M701 2 Check of High Voltage hold down Circuit Condition AC Input 95 to 150V It must be variable Step 1 Set the AC Input voltage approximately 95V Step 2 Connect Equipment B as shown in Fig 3 and connect jumper wire between terminal of C908 and chassis earth Step 3 Connect DC Voltmeter presion 2 as shown in Fig 3 Step 4 Turn the receiver on and fully rotate BRIGHTNESS and CONTRAST VR counter clockwise Step 5 Slowly increas
12. 6 Insert wedges at the angles of 120 from the wedge gt ite ae adi 13 WHITE BALANCE ALIGNMENT 1 Receive broadcasting In the case of color broadcast ing put out colors turn COLOR LOK Switch to OFF CR 320 only turn contrast control R334 fully counter clockwise and turn Brightness control R333 fully clockwise 2 Turn Screen control R871 and BKG Background control R853 red R859 green and R865 blue of CPT P W board fully counterclockwise 3 Disconnect 1 pin connector from P5 of the signal P W board 4 Stop vertical oscillation by jamp wire between the terminal side of R602 and CHASSIS EARTH 5 Gently turn Screen control clockwise and set it to a point where a horizontal line of any one of red green and blue can be dimly seen Then adjust BKG control so that all of red blue and green can be dimly seen 6 After generating vertical oscillation by release the jamp wire connected at Step 4 connect the 1 pin connector to P5 of the signal P W board 7 Achieve white balance for the high brightness part by means of the Drive control R856 green and R862 blue of CPT P W board 8 Ensure that white balance for the low brightness part is held by reducing the brightness In case the white balance is deviated regulate it by turning BKG control slightly Depending on the content of receiv ing program there are cases in which brightness cannot be reduced enough In that case carry out
13. SERVICE MANUAL wo 326 NP5A2X Chassis CAUTION Before servicing this chassis it is important that the service technician read the Safety Precaution and Product Safety Notices in this Service Manual CONTENTS SPECIFICATIONS 1 SEFETY PRECAUTIONS 2 PRODUCT SAFETY NOTICE 3 TECHNICAL FEATURES 4 CONTROLS 4 TECHNICAL CAUTIONS 5 INSTALLATION AND ALIGNMENT 8 PRINTED WIRING BOARD CIRCUIT 15 TUNER CIRCUIT SCHEMATIC DIAGRAM 20 j BASIC CIRCUIT SCHEMATIC DIAGRAM 21 REPLACEMENT PARTS LIST 22 TECHNICAL SPECIFICATIONS ANTENNA INPUT IMPEDANCE 300 ohm balanced 75 ohm for Coaxial Cable TELEVISION R F FREQUENCY RANGE All 12 VHF Channels 54 MHz to 88MHz 1 174MHz to 216MHz All 70 UHF Channels 470MHz to 890MHz INTERMEDIATE FREQUENCIES Picture 1 Carrier Frequency 45 75MHz Sound 1 Carrier Frequency 41 25MHz Color I F Frequency 42 17 MHz nominal Sound 1 Frequency 4 5 MHz Color Sub Carrier Frequency 3 58MHz POWER INPUT woe 120 volts 60Hz POWER RATING 80W CONVERGENCE Self convergence FOCUS iie secre Electrostatic PICTURE TUBE 370CFB22 SOLID STATE COLOUR TELEVISION July 1976
14. SRD P 83 R216 0114057 Carbon film 479 5 SRD P 83 R217 10114137 Carbon film 1802 5 SRD P B4 C415 0275013 Polyester film 0 022uF 10 DCSOWV A4 416 0252532 Electrolytic 220uF DC16WV A4 417 0252631 Electrolytic 100uF DC25WV 4 C418 0244165 Ceramic 4700pF 21909 DCSOWV 217 10244103 Ceramic 1500pF 10 A4 C419 10252811 Electrolytic 1 DC50WV A D5 C720 10299924 Polypropylene 0 068 10 DC200WV B4 R218 0114165 Carbon film 1 5k2 5 SRDXP B3 218 0244101 Ceramic 1000pF 10 DCSOWV B5 C501 0248682 Ceramic 82pF 596 DC50NV ADS iC721 0299924 Polypropylene O 068uF 10 DC200WV B4 R219 0114059 Carbon film 560 5 5 C219 0244101 Ceramic 1000pF 10 DCSOWV A5 C503 0248680 Ceramic 68 5 ES C722 0279859 Polyester film O 1uF 10 100 B4 R220 0114141 Carbon film 2700 5 B3 220 0244103 Ceramic 1500pF 1096 DCSOWV A5 C504 0248686 Ceramic 120pF 5 DC50WV 05 723 0243505 Ceramic 220pF 10 DC500WV B4 18221 0114176 Carbon film 4 3k2 5 SRDXP 83 C221 0248637 Ceramic 7pF 0 25 DC50WV C505 0244171 Ceramic Q 01uF 15029 05 725 10258589 Electrolytic 100uF DC160WV B4 18222 0114183 Carbon film 8 2kQ 5 SRD P B4 R223 0114161 Carbon film 1 0k2 5 SRD P B4 R224 0114207 Carbon film 18k 5 SRDXP C222 10252621 E
15. SRDXP C1 C259 0252613 Electrolytic 3 3uF DC25WV C602 0277025 Polyester film O 1uF 10 DC50WV E1 904 0277029 Polyester film 0 22uF 10 DC100WV C3 R274 0114145 Carbonfilm 3909 5 5 C261 0252525 Electrolytic 47uF DC16WV C603 0251087 Electrolytic 20 DC25WV E2 C905 0257535 Electrolytic 1uF DC160WV C3 275 0137569 Carbon film 5600 5 SRDUSD C3 C263 0244102 Ceramic 1200pF 10 C604 0277123 Polyester film 0 068uF 20 DCSOWV D2 C906 0277029 Polyester film O 22uF 10 DC100WV C1 8276 0114137 Carbon film 1800 5 C301 0244101 Ceramic 1000pF 10 DC5OWV C605 0251090 Electrolytic 100F 20 DC25WV D2 907 10277029 Polyester film O 22uF 10 DC100WV C5 R301 10114167 Carbon film 1 8kQ 5 SRDYP C5 C302 C252531 Electrolytic 100uF DC16WV C606 0251075 Electrolytic 4 7uF 20 DC16WV D2 C908 0259828 Electrolytic 1000uF DC160WV C5 R302 0114143 Carbon film 3300 5 SRDAP C6 C305 0252811 Electrolytic 1 DC50W V C607 0252333 Electrolytic 3300F DC10WV E2 C912 0299926 Polypropylene O 14F 10 DC200WVi C5 R303 10114049 Carbonfilm 220 5 SRDYP C6 C306 0252523 Electrolytic 33uF DC16WV E4 C608 0275830 Polyester film 2200pF 20 DC100WV D2 C913 0257523 Electrolytic 2 2uF DC160WV C6 R308 0114281 Carbon film 100kQ 45 SRDYP C307 025
16. CIO 12 08 0 75P Bo TRI 25C684RD CRIO 15516 TCiO TCiO vCi03 LINE snare VHF TUNER HT 354J 25 1856 rt CRIO2 y 152076 RIO 820 woot 220 C124 ea i000 000 1000 000 AGE TERNA 8 TERMINAL OUTPUT 35v 6v 62 TERMINAL B 15v St 685 1 mL i AFC TERMI 290v BASIC CIRCUIT SCHEMATIC DIAGRAM CR 316 CR 320 SHADED REPLACING AN OF THIS SERVI PROPER SERVIC 2 5 4 5 6 en p E2 p ap Stn FOR CANADA FOR U S A ROO 00 5 43 1650 e 002 020 0003 w KC580CI HA11580 2 jPa P4 y 4049140 9405 Sua r E UHF TUNER AS Suhr CF40 PO
17. Roa 122 iN 34A cus F i 00 Me REN cine 49 crass 3 7 15 207601524739 6296 R261 E eee 1000 TR25 POM TR254 47 29 TRA 2510950 ius R274 ie enia 25C4588 25467380 SNC SEP ma TR25 TR30 To pown e AOC ANP aire 5 4588 25 458 p Pest NONE CANCELER IST vi0 O TO POWER deus mmm m pn aem 330 7 a2 Oe n h 5 TRas IC SOI P302 v a T RTE KC5BOCI HAI580 T SUB COLOR 525 5 9 2 TINT cs22 esa wal 1 i Woso z e 33 1 Tene E SVA MS 1 908 1 cie meer ud ees aS 1 als 3 R308 C908 A ale 470K on L Ld 5 s s i 1 z 5 V Y pe Jour To TUNER RIO 465072 cou 2 p 60 i b i oor Tasso poo uw Twas ah so Ms B20 12301 9 Laun 5050 0 aaro Wears sw i rA TO TUNER 180 L d M iu gt C820 Act T erem uM T C524 i 6d ras oe 123 a i i arr mre rr D i R526 R929 8324 RON bc caia 0520 i are 94 8 2f nuo Cao ETE Bd Mr 1001 oem
18. Silicon 254673 C5 R331 0114063 Carbon film 820 5 SRDLP R610 0151255 Control 20k2 B V LIN Macs usum ic x 0114165 Carbon film 1 5kQ 5 SRDXP E E6 R742 0119505 Metal oxidefiim 2 20 5 C3 TR253 12320631 Silicon 254673 C O DEM occa gears ee Sub BRIT E ue 0181254 Control 5k0 B V SIZE Be D6 R748 0114133 Carbon film 1202 5 SRDXP C2 TR254 2320591 Silicon 25 458 B O Hase DBA a BRIGHT 0114183 Carbon film 8 2kQ 5 SRD P AD6 R749 0134202 Composition 1MQ 5 RCYGF C5 TR301 12320596 Silicon e ale N CONTRA 14 0114175 Carbon film 39kQ 5 SRDXP R751 0153251 Control 15M9 10 FOCUS B6 TR302 2320596 Silicon 2sc458 Es 0114205 Carbon 15kQ 5 SRD4P E4 R616 0110125 Metaloxidefilm 1502 53 1 AE 9752 0134409 Composition 1MQ 10 RC GF TR303 2321351 Silicon 25A844 254836 id ied icu e T 1000 5 SRDAP rs 0114147 Carbon film 4700 25 SRDYP C7 R850 0114139 Carbon film 12200 5 5 TR304 2320637 Silicon 254673 O Aa nano 2004368 Rui jd SADAR ES 8 10174209 Carbon film 22kQ 5 SRDXP R851 0114169 Carbon film 2 200 696 SRDP TR601 2320591 Silicon 250458 da pacc E TG Dd bie s 5 SRDAP i iiis 0114049 Carbon film 220 5 SRDP 852 0114169 Carbon film 2 2k2 5 SRDXP E4 TR602 2320631 Silicon 2 673 8
19. i m Me Ms 18 ge T i t bow 4 i on Er QS i Ebr RORIS E A m gH Nez 2325 195224 sus 3 i ial AM 13 Bye 1 M eee 97 302 503 606 606 507 DUK AKENT i b aM lt H um 1920767182473 16 2 228 unc mt P T XN 4 Sus sd Wo n 7 iensor 1 lw wor Re cam PRR TR302 cme R990 0 52076 AEE TERES i u 330 lea 25 458 T P0 O IS2479 8 ne PEDESTAL RM 1306 i R832 C927 Pz x LAMP qu S 306 220 270 lewsos crso ROSS x DE any 1 mo Dr Looe i 1 d rel 6 CuSO d SEES EC honda e iai wars d n sansi a ICEN ZEAE Ga a CONT cance n Ox sl DV bane ASL ae ack ere i TR303 1 2548440 0 TR304 1 TO POwER TO POWER Man a 25A673Q 0 TO POwtR T CPT OEF Pwa 05 BOEF a3 55A836 D E zwovoroawe 38D VIDE BOEF A4 PWBSPS 18 19 St TUNER CIRCUIT SCHEMATIC DIAGRAM ANT INPUT 0 R101 10M 001 L 02 vCIO 4 24 2 vcio CiO 26P UHF TUNER HU 354C iF OuTPUT RIO 2 7K R3 39
20. 0 N ed idt Ms SRDP 620 0114051 Carbon film 270 5 SRDXP AC8 853 0151288 Control 2k2 B RV 16 E4 TR603 2321221 Silicon 2SC1514 aaa aoe ad SROUP R621 0114139 Carbon film 2201 45 SRD P R854 0114135 Carbon film 1500 5 SRD P 4E4 TR6O4 2321592 Silicon 250401 aa nase lC ES e 5 E4 9622 0110157 Metal oxide film 33kQ 5 RDIPB C8 R855 0114141 Carbon film 2709 5 jSRDY P A E4 TR605 2321386 Silicon 258546 0 258546A O O real rcs ee a o ilm 218 5 E4 R623 0110157 Metal oxide film 3 3kQ 5 RDIPB 8856 0151286 Control 5000 8 RV 16 D3 TR701 12320591 Silicon 2sc458 B C RR M c E x DN VOLUME E4 R624 0114135 Carbon film 1500 5 SRD P amp C8 R857 0114169 Carbon film 2 200 5 SRDAP 304 TR702 2321321 Silicon 25 844 D E B Rio Cole pire ee E4 R625 0134017 Composition 109 5 RCAGF R858 0114169 Carbon film 2 2k2 5 SRDMP 04 TR7O3 2321412 Silicon 28C17228K WE es on film Q 5 SRDP E4 626 0134024 Composition 220 5 A CB 9859 0151288 Control 2kQ B RV 16 5 D5 TR704 2320299 Silicon 25 937 YL BK 0114177 Carbon film 5 SRDAP E5 R627 0114179 Carbon 5 6 0 5 SRDP dis ydo bp 05 R628 0114141 Carbon film 2700 5 SRDXP C7 860 0114135 Carbon film 1509 5 SRDP TR705 2320845 Silicon 25 1162
21. 41 25 MHz and adjust AEE Marker gener RN D voltage supply end connections ESN 1 Apply 12 0V to the terminal P1 3 Marker generator 35 50 MHz 45 75MHz 2 Apply 3 5V to the terminal TP 14 4 Sweep generator 35 50 MHz 3 4 Connect to the terminal of Oscilloscope Seq 5 Connet Oscilloscope to the terminal A3 TR202 so output of waveform E i become as in Fig F OSCILLOSCOPE ALIGNMENT ALIGNMENT PROCEDURE Marker gener Tuner TP Deos nd Adjust the L002 so output voltage of F2 becomes 7 0 1 0V 45 75 MHz on Oscilloscope DC voltage range Sweep gener Tuner TP ov 47 25 MHz min Marker gener 39 75 MHz min Sweep gener 41 25 MHz min Tuner TP Adjust the TOO1 so output of signal as Fig Marker generator Sweep generator e a Tuner TP 2 Adjust the levels of 4l 25MHz 4725MH Marker gener 45 75 MHz 42 17 MHz t 0 5 6010 4545 Sweep gener to be as shown in Fig 96 96 45 75MHz 3 SIF CIRCUIT ALIGNMENT Voltage supply 1 Apply 12 0V to the terminal P1 See Fig 4 ALIGNMENT V T V M CIRCUIT SIGNAL ALIGNMENT ALIGNMENT PROCEDURE TP21 R406 S IF T401 PINK Adjust the T401 PINK amp BLUE so output of signal becomes Signal generator T401 BLUE maximum 4 5 MHz 400 Hz FM 25 KHz d
22. 625 01511871 Control diui 5 Nera 0134103 Composition 8 2kQ 5 RCMGF AD1 j R901 0139007 Composition 10 RC GF C2 CR255 0575001 Germanium 4 xum En ibus Carbon film 6800 45 SRDXP AD1 R902 0139007 Composition 1MQ 10 RC4GF CR256 0575001 Germanium IN34A set lesen Ise lie 2o 179 Carbon film 5 6k2 5 5 AEI R903 0142261 Wire wound 270 5 RWH20 C6 301 2331351 Silicon 152076 152473H Cebonim li Enna CIR 18941 0114221 Carbon film 68k2 5 SRDXP R904 0114168 Carbon film 200 5 SRDXP C5 CR302 2331351 Silicon 152076 152473H BF sade Gasca Yum Doe ace Suc Bo 0110173 Metaloxidefilm 15kQ 5 RD1PB D2 R906 0114164 Carbon film 1 3k2 45 C6 CR303 2331351 Silicon 152076 192473H po fiato E E d eds 0114053 Carbon film 330 45 SRDYP D2 R907 0114281 Carbon film 1000 5 SRDYP 304 2331161 Silicon HZ a eee e a 05 iy 0114147 Carbon film 4700 35 SRDYP D2 R908 0114180 Carbon film 6 2kf 5 SRDYP C6 CR305 2331351 Silicon 152076 192473H donde tI R716 10114151 Carbon film 6800 5 SRDUP 4 02 R909 0114281 Carbon film 100kN 596 SRDXP CR306 2331161 Silicon HZ 11 hye R717 0114145 Carbon film 3902 5 SRDYP D2 R910 0114215 Carbon
23. 8 A 852 2340187 Lamp Neon lamp D5 L707 2120333 HFC heater choke 0 35uH 53 2340181 Lamp Neon tamp C1 TH251 2340371 Thermistor 112301 9 87 L851 2121708 Peaking 120uH 2201 L801 2121673 Line filter coil S050 2630771 Switch Push switch E4 TH601 2340351 Thermistor 112351 2 A E1 L902 12121811 Filter coil 0 26mH A 5901 2630833 Switch ON OFF switch E6 TH602 2340341 Thermistor 11D4H C1 L903 2161487 Degaussing coil SP451 2410421 Speaker 80 x 120mm TH901 2340263 Thermistor PTC thermistor RRR TT 56850 2340032 Spark gap E ICs ia E GEMPOUNDEDMPOPENIS 56851 2340032 Spark gap A1 CPO51 2790161 Capristor A 50852 2340032 Spark gap 1 001 2360511 HA1126DW A1 52 2790161 Capristor 50853 2340032 Spark gap A4 1C401 2360291 KC583C A1 CP053 2790162 Capristor 2654542 Socket C P T socket AG 1 501 2360431 KC580C HA11580 A Ai CPO54 2790162 Capristor MODULES 70 B2 CP201 2141714j Compound trap coil 47 25MHz v1 2351071 Tube C P T 370CFB22 B2 CP202 2141715 Compound trap coil 41 25MH2 ue 2422262 Tuner VHF tuner HT 354J 2 06 M701 2370152 HM7101HD B2 203 2141716 Compound trap coil 39 75 2 EE 2421535 Tuner UHF tuner HU 354C 2 03 901 23701411 4M9101VS 1 C5 CP301 2121571 Compound trap coil 3 58MHz ERANS FORMENS MUSCEELANEGUS SC CS 2440792 Yoke Deflecti
24. SAFETY PRECAUTIONS NOTICE Comply with all cautions and safety related notes located on or inside the cabinet and on the chassis or picture tube WARNING Since the chassis of this receiver is connected to one side of AC power supply during operation whenever the receiver is plugged in service should not be attempted by anyone unfamiliar with the precautions necessary when working on this type of receiver The following precautions should be observed 1 Do not install remove or handle the picture tube in any manner unless shatterproof goggles are worn People not so equipped should be kept away while picture tubes are handled Keep picture tube away from the body while handling 2 When service is required an isolation transformer should be inserted between power line and the receiver before any service is performed on a chassis receiver 3 When replacing a chassis in the receiver all the pro tective devices are put back in place such as barriers non metallic knobs adjustment and compartment cover shields isolation resistor capacitor etc 4 When service is required observe the original lead dress Extra precaution should be taken to assure correct lead dress in the high voltage circuitry area 5 Always use the manufacturer s replacement components Especially critical components as indicated on the circuit diagram should not be replaced by other manufacture s Furthermore where a short circuit has occurred
25. clockwise Step 3 Turn the receiver ON Step 4 Eliminate the sync signal by grounding P251 with a 0 1MF 50V Step 5 Obtain horizontal synchronization by turning the core of H OSC Coil T701 clockwise Step 6 Turn the receiver OFF Step 7 Release the capacitor connected at Step 4 Step 8 Fix the H OSC Coil with glue as shown below DGlue Q HOSCCoii Tron 2 H OSC Coil 2161342 Step 9 Confirm that the high voltage hold down circuit works correctly refer to the checking method of the high voltage hold down circuit R713 C709 R714 C710 T701 OSE INSTALLATION AND ALIGNMENT 1 VIF CIRCUIT ALIGNMENT Voltage supply and connections See Fig 4 1 Apply 3 5V to the terminal TP14 4 Marker generator 35 50 MH SOUND OSCILLOSCOPE 2 Apply 12 0V to the terminal P1 5 Sweep generator 35 50 MHz SHIELO CASE 3 Connect Oscilloscope to the terminal TP 12 SIGNAL ALIGNMENT ALIGNMENT GENERATOR OSCILLOSCOPE CIRCUIT PROCEDURE WAVEFORM Collecter of TP12 T203 Get rid of L206 out of TR202 T204 its band range by 1 206 alignment i SG 4 5MHz SWEEP 1 Adjust the T203 T204 Marker gener Sweep gener So out put of waveform MOV become as in Fig mme e T Collecter of Adjust the T203 T204 Collecter of V IF Adjust the marker to TR202 Final Trap
26. is smaller in the power supply circuit and the reliability is so much higher 3 Even if there occurred any load short circuits as the short circuiting of the horizontal output transistor it causes no chain breakdown 4 Since no transformer is used the power loss is so much smaller and less in weight 5 The use of the voltage setting module in the error detection section has eliminated the necessity of voltage adjustment CIRCUIT OPERATION The circuit diagram is shown in Fig 1 This power supply circuit consists of the phase angle contro section and the series type constant voltage control section 1 Phase Angle Control Section The phase control transistors TR903 and TR904 form a differential amplifier and have such a switching characteristic that the one with a higher base voltage than the other s is switched off and oppositely the other with a lower base voltage is switched on A reference voltage of OV is applied to the base of TR904 through R913 R921 and R926 while the voltage across the smoothing condenser C908 divided between R907 and R908 is applied to the base of TR903 To make it easier to understand it will be explained about the circuit operation on direct current Now suppose that the voltage across the smoothing condenser C908 has increased The base voltage of TR904 will be larger than that of TR903 and then TR904 will be As a result there will be no current flowing to the gate of TR901 SCR and
27. replace those components that indicate evidence of overheating 6 Before returning a serviced receiver to the customer the service technician must thoroughly test the unit to be certain that it is completely safe to operate without danger of electrical shock and be sure that no protective device built into the receiver by the manufacturer has become defective or inadvertently defeated during servicing Therefore the following checks are recommended for the continued protection af the customer and service techni cian Leakage Current Cold Check With the AC plug removed from the 120V AC 60Hz source place a jumper across the two plug prongs Turn the AC power switch on Using an insulation tester 500V connect one lead to the jumpered AC plug and touch the other lead to each exposed metal part anten nas screwheads metal overlays control shafts etc par ticularly any exposed metal part having a return path to the chassis Exposed metal parts having a return path to the chassis should have a minimum resistance reading of and a maximum resistance reading of 4MQ Any resistance value below or above this range indicates an abnormality which requires corrective action Exposed metal parts not having a return path to the chassis will indicate an open circuit Leakage Current Hot Check Plug the AC line cord directly into a 120V AC 60Hz outlet do not use an isolation transformer for this check Turn the AC powe
28. the alignment watching the dark part in the image 14 COLOR and BRIGHTNESS ALIGNMENT This alignment should be carried out after finishing alignment of the white balance The brightness around the set should be made about the same as that at night with a television set turned ON 1 Receive color broadcasting and turn COLOR LOK Switch to OFF CR 320 only 2 Turn Cont contro R334 and Color control R544 counterclockwise Set Brightness control R333 and Tint control R523 to the click positions respectively 3 Turn and set the sub brightness control R332 to that the black part of the screen including human hairs can be properiy seen 4 With COLOR LOK Switch set to ON CR 320 only set Cont control R334 and Color control R544 to the click positions respectively In this state set Sub Color Saturation control R545 so that a proper color depth can be obtained 5 Furthermore even with COLOR LOK Switch set to ON Color control R544 and Tint contro R523 can be fineiy regulated CR 320 only So when the color tone is not proper regulate it by turning Tint control R523 15 AGC ADJUSTMENT Set the channel selector dial to a channel 7 13ch and apply a signal 1 3mV to the VHF terminal on the antenna terminal board Next set the fine tuning control correctly Then connect a voltmeter across CR256 with on the cathode side and adjust R265 so that the voltage across CR256 becomes OV The AGC adjustment must be perf
29. 0 in parallel between the terminal 3 and 8 The tolerance of R930 has little effect on B voltage variation Caution never disassemble M901 but exchange M901 all at once when you replace M901 3 Load Short Circuit If the load is short circuited TR907 and TR905 will be OFF and the electric charge of the smoothing condenser C908 is discharged through R916 On the other hand in the phase contro section TR904 and TR901 become OFF and C908 is charged through large resistance of R929 Since R916 is smaller than R929 the voltage of the smoothing condenser C908 drops below 30V so that R916 will not be heated abnormally TROUBLE SHOOTING First take the following steps to check to see if the series type constant voltage control section is working properly 1 Set AC input power supply to 100 105V 2 Make short circuit R920 across the anode and the cathode of 901 3 Switch on the power supply 4 Check to see if the output voltage B voltage has a normal value 110V 3 Judgement If the output voltage has a value the trouble is likely to be located in the phase angle control section Remove the short circuit in Step 2 above and proceed to check the phase angle control section If the output voltage is found abnormal the trouble is likely to a fault in the constant voltage control section or a load short circuit POWER 8 PWB ur rash cago o 1 m
30. 04 C706 0277017 Polyester film 0 022uF 10 DCSOWV 004 02490911 Ceramic 110pF 5 DC50WV C005 0244101 Ceramic 1000pF 10 DCSOWV C006 0248668 Ceramic 22pF 5 DC50WV B3 C007 0244101 Ceramic 1000pF 10 DCSOWV A2 8 0248684 Ceramic 100pF 5 DC50WV C7 C317 0274012 Polyester film 1500pF 10 DC50WV B3 401 0248632 Ceramic 2pF 0 25 DC50WV C402 0248650 Ceramic 10pF 0 5pF C403 0248680 Ceramic 68pF 5 DC50WV A4 C404 0244171 Ceramic 0 01uF 5 95 C010 0252811 Electrolytic 122 DC50WV A4 C405 40275013 Polyester film 0 022uF 105 DCS0WV D4 C707 0252621 Electrolytic 10uF DC25WV 82 R205 10114149 Carbon film 5600 5 SRDY P A2 051 02526211 Electrolytic 10uF DC50WV A4 C406 0252621 Electrolytic 10uF DC25WV D4 C708 0252613 Electrolytic 3 3uF DC25WV B2 R206 0114138 Carbon film 2002 5 5 A2 052 0251079 Electrolytic 22uF 20 iDC16WV 4 407 0252525 Electrolytic 47uF DC16WV D4 C709 10299963 Polypropylene O O1uF 5 DC630WV B2 8207 0114171 Carbon film 2 7kQ 5 SRDY P 81 C201 0248639 Ceramic pF 0 25pF DCSOWV 81 C202 0249026 Ceramic 56pF 5 DC50WV A4 408 0252621 Electrolytic 1OuF DC25WV B3 C409 0244171 Ceramic Q 01uF 5 996 DC50WV 710 0299961 Polypropylene 0 1uF 5 DC200WV D4 C711 0277021 Polyester film 0 047 21096 DC50WV B2 R208 0114
31. 131 Carbon film 1000 5 SRDXP B2 R209 0114149 Carbon film 56002 5 SRD P 83 C410 0248052 Ceramic 82 5 DC50WV 81 C203 0248761 Ceramic 2 5pF 0 25pF DC50WV A4 C411 0248052 Ceramic 82pF 5 DC50WV 0277013 Polyester O O1uF 10 DCSOWV B3 R210 10114139 Carbon 2202 5 SRD P B1 C204 0249025 Ceramic 33pF 5 DCSOWV B4 C412 10244113 Ceramic 330pF 10 DCSOWV D4 C713 0299914 Polypropylene O 014F 10 DC200WV 83 18211 10114165 Carbon film 1 5k2 5 SRD P B1 C205 0248675 Ceramic 43pF 5 DCS0WV 84 413 10275014 Polyester film 0 033uF 10 D4 C714 0243512 Ceramic 820pF 10 DC5O0WV B3 212 0114131 Carbon film 1002 5 SRDXP B2 212 0244101 Ceramic 1000pF 10 DC50WV B4 C414 0252331 Electrolytic 100uF DC10WV 05 C715 10215296 Paper 0 068 uF 1096 B3 9213 0114171 Carbon film 2 7k2 5 SRD P B2 213 0248684 Ceramic 100pF 5 j DC50WV B2 214 0244103 Ceramic 1500pF 10 DCSOWV B2 215 0244101 Ceramic 1000pF 10 DC50WV 82 C216 0244101 Ceramic 1000pF 10 DCSOWV ADS C716 0299920 Polypropylene 0 033uF 10 DC200WV ADS C717 0299632 Polypropylene 0 033uF 10 DC630WV A D5 718 0299632 Polypropylene 0 033 10 DC630WV ADS 719 0299631 Polypropylene 0 027 1055 DC630WV 83 R214 0114153 Carbon film 8200 5 SRD P B3 R215 0114137 Carbon film 1800 5
32. 2 470K ROS R262 I 1 li Less RB60 Be Wes a STEAD 150 TR254 TR252 mss io TR251 TR30I L308 gf wet ex 2504588 0 254673 124 ap ascase 0 0 250458 0 0 7 90 AGC as SYNC SEP 5 6552 NOISE CANCELER SY VIDEO ANP ami raes ce me 0 a ED VALUE OF C90lA 908 13 i I cox e r TRIO TRO TRIOS TR7D4 lm Lus 022 wmo 2548724 O H 2sc458 8 0 25 844 SCIT 2BK 2SC937YL BK RB 2 2K Hoc SCR ol Tor ERROR SYNC AMP H OSC DRIVE 88706 2 2K O educ quf 62 m MLV DET MODULE EDEN TON erem K 5 mn CRTOS Mele lY VIN HSE 3 SWITCH 7 220 16 TRATOS C20 pro TR TROSI TR852 CR704 0068 ske P703 T S aeg 251236 0 25 1514 25 1514 25 1514 74 o 4 9 270 SIDE HCC ment in 8116 s LS n736 Proz nex 76 D Qu cnr 05 Hid I CITI K TRTO Terss ak 0034630 x2 27 40 2208 de 1 RTI 390 3 bpp Selo rn n ans pk n Tet FOCUS Box 1 1704 To cPT i 00M n E 6 01 Le ADS a OTM ama AM 1 yn S RM2 E 1 150 1 10 FR e 22 FR 008 100 0 E qel ie t me wm d Si P602 I vor ach Focus
33. 2621 Electrolytic 10uF DC25WV E4 C609 0258584 Electrolytic 10 DC160WV E2 916 0252563 Electrolytic 330uF DC16WV C6 R312 10114140 Carbon film 2402 45 SRDYP C308 0275023 Polyester film 1500 10 DC5OWV E4 C610 10244565 Ceramic 4700pF 110995 DCSOOWV D1 918 0244541 Ceramic O 01uF 10 DC500WV C6 R313 0114167 Carbon film 1 8kQ 5 SRDXP 0252523 Electrolytic 33uF DC16WV 611 0258589 Electrolytic 100uF DC160WV 0257536 Electrolytic 3 3uF DC160WV C6 R314 0114169 Carbon film 2 2k9 5 soe 2299 2 23 PRODUCT SAFETY NOTE Components marked with a A have special characteristics important to safety Before replacing any of the PRODUCT SAFETY NOTICE of this Service Manual Don t degrade the safety of the receiver PRODUCT SAFETY NOTE Components marked with a A have special characteristics important to safety Before replacing any of these components read carefully through mpruper servicing these components read carefully the PRODUCT SAFETY NOTICE of this Service Manual Don t degrade the safety of the receiver
34. 4 D2 TR904 2321322 Silicon 2SA844 E B amp hasta Garban fim E R638 0151254 Control 5kQ B a Ac8 R871 0153223 Control 1MQ B RV 24 2 TR905 2321591 Silicon 2504014 gee leaner ewes ae iru d e E R701 0114205 Carbon 15kQ 5 SRDYP 8872 0134181 Composition 680k2 5 RC4GF 02 907 2321521 Silicon 25 872 0114137 Gabon Eit p e R702 10114165 Carbon film 1 5k 5 SRDP C8 9873 0134177 Composition 470kQ 5 RCAGF n is SDF R703 10114147 Carbon film 4700 SRDYP A7 9874 0134169 Composition 220kQ 5 i RCYGF CR201 0575005 Germanium IN6O jm XB ned B R704 0114203 Carbon film 12kQ 25 SRDYP 4 A8 R875 0134161 Composition 100k2 45 RCAGF CR251 0575005 Germanium IN6O a m Jk 28 R705 0114203 Carbon film 12k 5 SRDXP r1 tego 5 pedo 88 E en EX cil e bis 0114145 Carbon film 139002 5 SRDYP 3 B7 876 0110271 Metal oxide film 12k2 5 RD2PB C4 CR252 2331351 Silicon 1 2076 1S2473H FE erie iade foe 5 A ieee 0114177 Carbon film 4 SRDXP R877 0110271 Metal oxide film 1200 5 RD2PB C4 CR253 2331351 Silicon 12076 152473H B wee 0114177 Carbon film 4 7 0 5 SRDXP 87 878 0110271 Metal oxide film 12kQ 5 RD2PB C2 CR254 0575001 Germanium IN34A B5
35. 5 6kQ 5 SRDY P C3 C252 0252523 Electrolytic 33uF DC16WV B5 C524 0252615 Electrolytic 4 7uF DC25WV D6 C746 0252621 Electrolytic 10uF DC25WV C2 R264 0114177 Carbon film 4 7kQ 5 SRDYP C253 10252525 Electrolytic 474F DC16WV B5 C525 0275819 Polyester film 0 022uF 10 DC5OWV D6 C747 0275023 Polyester film 1500pF 5 DC50WV C2 R265 0151187 Control 5kQ B AGC 87 C531 0252523 Electrolytic 33uF 10 DC25BWV C3 254 0275822 Polyester film 0 068uF 1076 DC100WV C526 0244136 Ceramic 270pF 10 DC50WV E6 C748 0257536 Electrolytic 3 3uF DC160WV R266 0114167 Carbon film 1 8k2 5 SRDXP C3 C255 0244117 Ceramic 680pF 10 DC50WV A7 C527 0244136 Ceramic 270pF 10 E5 C750 0243504 Ceramic 180pF 10 DCSOWV C1 R267 0114153 Carbonfilm 8200 5 SRDXP C2 C256 10274490 Polyester film O 1uF 10 DC100WV C528 10244136 Ceramic 270pF 10 DCSOWV C8 C850 0243425 Ceramic 100pF 10 DCT1 5kWM C1 R268 0114131 Carbon film 1000 5 SRDXP C2 1C257 0252615 Electrolytic 4 7uF DC28WV 85 C529 0248738 Ceramic 470pF 10 DC5OWV C901 0279723 Polyester film 0 22uF 20 125 C1 R269 0114177 Carbonfilm 47kQ 5 SRDUP C2 C258 0252817 Electrolytic 2 2uF DCSOWV C601 0277025 Polyester film O 1uF 10 OCSOWV AC2 902 10244541 Ceramic 0 01uF 10 DC500WV C1 R270 0114169 Carbon film 2 2kQ 5
36. 55 0137569 Carbon film 56092 5 590780 05 C734 0244436 Ceramic 1000pF 20 DCTkWV B4 256 0114137 Carbon film 18002 5 SRDAP E7 1C735 0277019 Polyester film O OG3uF 21096 C3 R257 0114205 Carbon film 15kQ 5 SRDAP C2 C231 0244101 Ceramic 1000pF 10 DCSOWV A6 517 0252811 Electrolytic luF DC50WV E6 736 0277007 Polyester film 3300pF 10 DCSOWV R258 0114179 Carbon film 5 6kQ 5 SRDXP C2 C232 0244101 Ceramic 1000pF 10 1 519 0276013 Polyester film 0 22uF 10 DCSOWV DS C737 0243837 Ceramic 330pF 10 DC2 5kWV C3 R259 0114138 Carbon film 2000 5 SRDXP 0249043 Ceramic 100pF 5 DCS5O0WV C520 0248676 Ceramic 47pF 5 DC50WV E7 C740 0252663 Electrolytic 330uF DC25WV R260 10114153 Carbon film 18200 5 SRDXP C521 0244171 Ceramic 0 01uF 14009 DCSOWV E7 741 0252331 Electrolytic 100uF DC10WV C3 R261 0114183 Carbon film 82kQ 5 SRDXP C235 0248637 Ceramic pF 0 25pF DC5OWV C522 0248674 Ceramic 39pF 5 E5 C742 0244107 Ceramic 3300pF 10 DC50WV C2 R262 0114165 Carbonfilm 1 5kQ 5 SRDXP C4 C251 0252811 Electrolytic IWF BCSOWV 86 C523 0275819 Polyester film 0 022uF 10 05 10743 0299920 Polypropylene 0 033uF 10 DC200WV C2 R263 0114179 Carbon film
37. GH IM PROPER SERVICING BASIC CIRCUIT SCHEMATIC DIAGRAM CR 316 CR 320 2 3 4 5 6 7 8 ex L304 cgo 1C50 PRODUCT SAFETY NUTE 1 Tp 3001 aee TN SEO T SHADED COMPONENTS HAVE 3 ou ion R005 aoa aces LI ss aa eaves aber HAVE SPECIAL CHARACTERISTICS IMPORTANT TO SAFETY UHF TUNER 000 e nop 62K pH iid B6 haoi 302 303 905 08 dOY BEFORE REPLACING ANY OF THESE COMPONENTS READ CAREFU HU 354C S H THE PRODUCT SAFETY NOTICE OF THIS SERVICE MANUAL 1207 DONT DEGRADE THE SARETY OF THE RECAIVER THROUGH IMPROPER SERVICE a 1 w FE CAUTION NO ATTEMPT SHALL MADE TO nu DEFEAT 1701 Bettas FROM 2 POWER DEF PWB Fer T2 SP45I 503 HEATER C052 a 22 CH S 5 OO ie pe A COLOR 32 n pr KILLER P2 o 7 T 3 R874 elf fi ll mm E E T poppe EE RA wr lli 82 45y 35v 55v kel REP OL I
38. O NO SYMBOL STOCK NO NO 0248696 DESCRIPTION DESCRIPTION DESCRIPTION DESCRIPTION Ceramic 4700pF DCSOOWV Ceramic 330pF 5 DC50WV RESISTORS CAPACITORS ie RT a B6 C312 0252615 Electrolytic 4 7uF DC25WV D5 C614 0251073 Electrolytic 2 2uF 20 DC16WV A2 C001 0249092 Ceramic 160pF 5 DC50WV C5 C314 0252531 Electrolytic 100uF DC16WV 5 615 0252525 Electrolytic 47uF DC16WV R001 0114133 Carbon film 1200 5 SRDAP B3 C002 0248632 Ceramic 2pF 0 25pF DC50WV XC1 315 0244105 Ceramic 2200pF 10 DC50WV E5 C616 0244103 Ceramic 1500pF 10 DCSOWV B3 R002 0114207 Carbon film 18k 2 5 SRDAP B3 C003 0244101 Ceramic 1000pF 10 DC50WV X C1 C316 0244105 Ceramic 2200pF 10 DC50WV 4 620 0252525 Electrolytic 47 nF DC16WV A3 R003 0114181 Carbon film 6 8BkN 5 SRDYP A3 R005 0114220 Carbon film 62k2 5 SRDXP 06 10114224 Carbon film 91kQ2 5 SRDXP B1 R201 0114062 Carbon 750 5 5 B1 R202 0114049 Carbon film 222 5 SRDXP B2 R203 0114015 Carbon film 8 20 5 SRDAP 701 02770131 Polyester film 0 01uF 10 DCSOWV D3 C702 0277013 Polyester film 0 01uF 10 DCSOWV D3 C703 0277013 Polyester film O O1uF 10 DCSOWV D3 C704 0277017 Polyester film 0 022uF 10 DCSOWV
39. TR901 will be OFF On the other hand if the voltage across the smoothing condenser has lowered TR904 will be and a gate current will flow so that TR901 will be and operate to increase the voltage across C908 In actuality the AC signal that is generated by the integration circuit of C905 C906 C907 R909 and R925 is superimposed on the DC signal so that the conduction angle may be changed as to maintain the voltage across the smoothing condenser C908 at a constant level That is to say that if the voltage across the smoothing condenser C908 increases the con juction angle of TR901 is narrowed to allow a smaller charging current to flow However if the voltage across the smoothing condenser C908 decreases the conduction angle of TR901 become wider to permit a larger charging current to flow This is the way the voltage across C908 remains constant In this way the phase control section functions to keep the voltage across the smoothing condenser C908 constant at all times irrespective of the variations of the AC input voltage and load current 2 Series Type Const Voltage Control Section This is similar in circuit configuration to the series type constant voltage control system previously in use NP5A2X chassis uses the voltage setting module M901 in its error detection section so that it eliminates the necessity of output voltage adjustment The specified B voltage can be obtained by con necting the resistor R93
40. WER DEF 7 n EE D CREE j CR402 W8 B6 T 8540 R345 HU 354C 95 z 680 452 wer ket 1 40 T 300 ohm A Qov ay PME R 22 R3 27K cs VHF TUNER 0 69 PT Manz m 07 1 18K 7 P RS 2 TR203 4125 25 682 25 717 heo eden B 157 VIF A FA T f cs RSIS CSI C4 R520 WE eo soa Tool 472 68 1 a f is R333 56 500 8 qe 7 Lr 3e WS ANE CR30 SUB BRIGHT 7 z S p se TR253 R239 e SET 288675 MEO 200 gay TR303 x 376 DES Gebet yy I 1 ix 254844 uum mom VN eov E SE 209 R316 TR304 caasa TR253 254636070 19 2546730 b 3RO VIDEO 35 5 3 Ae ym PaRI CR293 193 4 CR s 152076 152475 330 1 ELT 3 9292 00301 CR303 t R33 R327 L303 TR252 TR2SI ig 9 Eo 256458 2 673 250458 Sis 00 3 z L AOC SYNC NOISE E ea ED sare i tem 1 3K SIGNAL PW B A00 COIL 5 6 oF a M gt 1903 7 C904 68018 TR907 TR702 TR703 TR704 W Lu 022 1 25 672 gt POWER amp DEF RWB 1 4 canada 0i enl 25 458 2 5 844 25 17228 SCSYTYL GK ge Tae om EL e a aM m A P902 L90 ial 90 M70 FRAT HATIOIH ne ca H V DET
41. agnetize CPT signal 4 08 MHz 7 VERTICAL CIRCUIT ADJUSTMENT od 9 Sweep gener becomes maximum chassis and peripheral parts by means of the d demagnetizing coil 5 ALIGNMENT TTA Tuner TP Band pass Adjust the marker to CIRCUIT ALIGNMENT ALIGNMENT PROCEDURE 6 Check the horizontal size vertical linearity and 3 58 MHz and adjust vertical size and then turn the contrast control fully to T501 so output of f signal at 3 58 MHz SUB V HOLD Turn R605 fully clockwise the right and adjust the focus VR R751 so that the Sweep gener becomes flat and then turn fully best focus is obtained in the center of the picture counter clockwise Connect 7 Set the contrast VR to the click point and roughly the 8 2kQ between the ter Tuner TP Band pass Adjust the L501 minal P601 and P602 adjust the static convergence Refer to Static Con T501 so output of 3 08MHz Turn slowly R605 counter vergence Adjustment Marker gener waveform become as clockwise watching picture 8 Now make sure that more than 10 minutes have Sweep gener in Fig on the screen and stop it at passed after the TV set was switched on for warming 6 the point that the picture is up starting to roll up Then release the resistor 8 2kQ Different level and turn R607 clockwise to obtain sync Tightening Screw Tightening screw 0 5 CHROMA SYNC CIRCUIT ADJUSTMENT 5 Adjust to obtain the ideal
42. ast E4 CR706 j 2330551 Silicon VO9C B3 L402 2121203 Filter coil 83MHz i CR 316 3256605 Knob Tint Color Bright contrast E5 CR707 12331152 Silicon HZ 12 B L403 2121204 Filter coil 45MHz CR 320 4 06 CR708 2330551 Silicon VO9C B3 L404 2121698 Peaking 33H 3 3258242 Knob VHF cahnnel selector CR 316 CR709 2330551 Silicon vooc L405 2121203 Filter coil 83MHz 3258241 Knob VHF cahnnel selector 320 CR710 2330551 Silicon i VO9C A5 L501 12141531 Band pass coil 3258051 Knob VHF preset fine tuning E7 CR 711 2330551 Silicon VO9C B6 L502 2121706 Peaking 100uH 3258222 Knob UHF cahnnel selector CR 316 AEG CR714 12330551 Silicon VO9C A5 L504 2121692 Peaking 10uH 3258221 Knob UHF channel selector CR 320 2 02 CR901 12330773 Silicon 0056 85 1505 2160831 Fixed coil 15mH 3257122 Knob V hold D2 CR902 2330351 Silicon 152076 B6 1506 2120231 Peaking 5 6uH 3256992 Knob Pull switch D2 CR905 2330351 Silicon 152076 D4 L701 12120483 Filter coil 390uH 3258191 Knob UHF indicator A E2 CR906 2330252 Silicon VOGE D4 L702 2120811 Filter coil 5258181 Knob UHF indicator B E2 CR908 233025 Silicon VO6C 1703 2120486 Filter coil 4 7mH 2 03 iCR910 2330251 Silicon VO6C D7 1704 2120811 Filter coil A NE851 2340181 Lamp Neon lamp D2 CR912 2330251 Silicon VO6C E6 L705 2120482 Filter coil 1004H
43. bon film 33kQ 5 SRDXP E5 R731 0110175 Metal oxide film 18kQ 5 RDIPB E3 R930 0114223 Carbon film 82kQ 5 SRD P B6 R323 10114293 Carbon 330k 5 SRDXP 9603 0114215 Carbon film 39k2 5 SRDXP AEG R732 0119504 Metal oxide film 0 50 5 m EMT e 86 R324 0114153 Carbon film 8200 5 SRDXP R604 0114171 Carbon film 2 7k2 5 ide fi 5 RN eee 5 SRDXP AD6 18733 0119505 Metal oxide film 2 2 5 86 9325 10114179 Carbon film 5 6kQ 5 SRD P 605 0151254 Control 5k2 B Sub V HOLD R734 0190022 Wire wound 14 70 10 RG2P 82 TR201 0573474 Silicon 2SC682 R326 0114151 Carbon film 6800 5 SRDXP 19806 0114207 Carbon film 18kQ 5 SRDXP D6 18735 0110129 oxide film 2702 5 RDIPB B3 TR202 0573474 Silicon Sne C5 R327 0134083 Composition 1 2k2 5 E3 R607 0159239 Control 50kQ A V HOLD D5 R736 0119504 Metal oxide film 0 52 5 TR203 2320141 Silicon 250717 C5 R329 0114165 Carbon film 1 5kQ 5 SRD P R608 0114201 Carbon fiim 10k2 5 SRDXP A E7 740 0119505 Metal oxide film 2 2 5 251 2320591 Silicon 25 458 8 0 C5 R330 0114143 Carbon film 3300 5 SRDXP R609 0114183 Carbon film 182 0 5 SRDXP A D6 R741 0119505 Metal oxide film 2 22 5 C3 TR252 2320631
44. e the AC Input Voltage and confirm that picture on the screen disappeares at the indication of DC voltmeter under 141V DC Step 6 Turn the receiver off and disconnect Equipment B DC Voltmeter and jumper wire between C908 and chassis earth then turn the receiver on again Step 7 Connect Equipment C as shown in Fig 3 and confirm that the picture is steady and does not disappear at that time JUMPER WIRE K SQUARE TERMINAI POWER DEF PWB Fig 3 CHECKING METHOD Step 8 Turn the receiver off and disconnect Equipment C Specification of Equipment B Diode VO6C Registor 300K t596 Condenser 3 3MF 160V Lead Length approx 200mm Specification of Equipment C Registor 33KQ 45 AW Lead Length approx 100mm 3 FIXED HORIZONTAL OSCILLATION COIL AND ADJUSTING PROCEDURE OF HORI ZONTAL HOLD Horizontal Oscillation Coil H OSC Coil is fixed with glue at the factory to prevent to be turned for lower frequency resulting in making abnormal high voltage in the receiver Therefore when you service the receiver don t try to adjust or break the fixed H OSC Coil and perform the following procedure when you adjust H HOLD 1 Conditions where adjustment is needed Adjustment is needed when the following parts have been replaced TR702 R711 R709 R712 2 Adjusting procedure Step 1 Replace the fixed OSC Coil 701 with new one Step 2 Turn the core of H OSC Coil fully counter
45. evi 300 100mV rms output 6 HORIZONTAL CIRCUIT ADJUSTMENT 9 PREPARATION OF PURITY AND 4 BAND PASS CIRCUIT ALIGNMENT CONVERCENCE ALIGNMENT ALIGNMENT Voltage supply and connections circuit ALIGNMENT ALIGNMENT PROCEDURE 1 Install the deflection yoke to the CPT and press full up 1 Apply 3 5V to the terminal 14 d s x to the funnel of the CPT 2 Apply 12 0V to the terminal P1 E Refer to the Technical 2 install the C F magnet convergence free magnet E Caution Page 6 7 assembly in a position 35mm 1 3 8 from the N A end of the CPT neck as shown in Fig 5 and align STEP SIGNAL OSCILLOSCOPE ALIGNMENT ALIGN LIGNMENT WAVEFORME i GENERATOR 1 CIRCUIT MENT PROCEDURE horizontally the six tabs of purity magnet 4 pole j am magnet and 6 pole magnet The tab of the purity point of L209 TP12 45MHz L211 Adjust the L211 so out BOX HD b yuan ja magnet should be on a different level C229 V T V MI trap put of signa becomes i POE EEE 3 Attach the CPT PWB to the CPT When doing this A5MHz 8 6 minimum H CENTER ADJ pin make sure that the CPT ground connector P31 is of H connected zenti 4 Switch on the power supply to the TV set to warm Tuner Band pass Adjust the marker to it up Wait more than 10 minutes before proceeding oo paced to make purity adjustment Marker gener 5 Face the TV set to the north and dem
46. film 39k2 5 SRD P CR307 2331351 Silicon 1S2076 192473H D4 R718 0114175 Carbon film 3 90 5 SRDWP i D2 R912 10114164 Carbon film 1 3k2 5 SRDMP C7 CR308 0575005 Germanium INGO Ge eee 4P 4 R719 0110359 Metal oxide film 3 9k2 5 RD3PB 02 913 10114218 Carbon film 51k2 5 SRDXP CR401 0575005 Germanium INGO arbon film 5 6 5 SRDXP D4 R720 0114057 Carbon film 470 5 SRDXP 0110145 Carbon film 1kQ2 5 RD1P8 CR402 12330631 Silicon HZ 7A 9539 0114143 Carbon film 3300 5 SRDXP D4 R721 0134093 Composition 3 3kQ 5 RCXGF 0114151 Carbon film 6809 SRDXP 0110151 Metal oxidefilm 1 8k2 5 RD2PB 25 24 PRODUCT SAFETY NOTE Components marked with a A have special characteristics important to safety Before replacing any of i these components read carefully the PRODUCT SAFETY NOTICE of this Service Manual Don t degrade the safety of the receiver through improper servicing PRODUCT SAFETY NOTE Components marked with a A have special characteristics important to safety Before replacing any of these components read carefully the PRODUCT SAFETY NOTICE of this Service Manual Don t degrade the safety of the receiver through improper servicing
47. h impedance H V meter Connect to chassis earth and to the CPT anode button See the following connection diagram pu e ANODE HIGH IMPEDANCE HV METER CHASSIS EARTH Connection diagram of H V meter NOTE Turn power switch off without fail before the connection with Anode button is made AENEA Aux X Ray Radiation TUBE The primary source of X Ray radiation in this receiver is the picture tube The tube utilized for the above mentioned function in this chassis is specially constructed to limit X RAY radiation emissions For continued X RAY radiation protection the re placement tube must be the same type as the original HITACHI approved type PRODUCT SAFETY NOTICE Many electrical and mechanical parts in HITACHI television receiver have special safetyrelated character istics These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage wattage etc Replacement parts which have these special safety characteristics are identified in this Service Manual Electrical components having such features are identified by shading on the schematics and on the parts list in this Service Manual The use of a substitute replacement component which does not have the same safety characteristics as the HITACHI recommended replacement one shown in the parts list in this Service Manual
48. ignals assure fine picture c High performance AGC circuit and noise canceller circuit need no adjustment against a change of field strength Furthermore these circuits stabilize the receiver under the most difficult reception condi tions and minimize aeroplane flutter and signal fading 5 HIGH RELIABILITY Highly printed circuits stabilized power supply and various protection circuits assures highly reliable receiver performance AUTOMATIC DEGAUSSING This receiver is equipped with an automatic degaussing coil which effectively demagnetizes the picture tube each time the receiver is turned ON LOW POWER CONSUMPTION Power consumption is only 80 watts CONTROLS TELESCOPIC ANTENNA PUSH FOR VHF PRE SET FINE TUNING CHANNEL SELECTOR PULL ON SWITCH PUSH FOR UHF FINE TUNING UHF CHANNEL SELECTOR VOLUME CONTROL APS AFC SWITCH O PC 9 CONTRAST 10 BRIGHTNESS 11 COLOR 12 TINT 13 EARPHONE amp RECORDING JACK 14 UHF ANTEENA TERMINAL 15 VHF ANTENNA TERMINAL 16 H HOLD tees aiia MORS Rap Pe AERE e mme TECHNICAL CAUTIONS 1 POWER SUPPLY CIRCUIT The power supply circuit uses the phase angle control system and the constant voltage circuit system basically similar to that used in NPASX but more simplified in circuit configuration This power supply circuit has the following outstanding features 1 The contro range is wide 2 Power loss
49. lectrolytic 10uF DC25WV 84 C223 0244101 Ceramic 1000pF 10 DC50WV D5 C726 0252532 Electrolytic 220uF DC16WV E6 C727 0252536 Electrolytic 1000uF DC16WV 5 506 0244171 Ceramic 0 01uF 19996 DCSOWV A5 507 0248698 560pF 5 B6 508 0246444 15pF 596 DC50WV j B4 224 0246594 Ceramic 100pF 5 DCSOWV B6 C509 0246448 Ceramic 22pF 5 DC50NV 0299607 Polypropylene 0 22uF 10 DC400WV C4 R251 0114217 Carbon film 47k2 5 SRD P 84 225 0249042 Ceramic 91pF 5 DCSOWV B6 C510 0246598 Ceramic 150pF 5 DCSOWV A D C729 0299605 Polypropylene 0 15uF 10 DC400WV C4 R252 0114209 Carbon film 22k 15 SRDAP C4 R253 0114169 Carbon film 2 209 5 SRDAP R254 0114203 Carbon film 12k0 5 SRDYP B4 C226 0246582 Ceramic 33pF 5 DCSOWV B4 C227 0244101 Ceramic 1000pF 10 DCSOWV B4 C228 0248650 Ceramic 1OpF 0 5pF DC50WV B5 C229 0248650 Ceramic 10pF 0 5pF DC50WV 85 C230 0248054 Ceramic 100pF 5 DC50WV B6 C511 0244171 Ceramic 0 01uF 25909 DC50WV B6 C512 0248680 Ceramic 68pF 5 DC50WV B6 C513 0248670 Ceramic 27pF 5 DC50WV B6 514 0244171 Ceramic 0 01uF 15979 DCSOWV A6 515 0259808 Electrolytic 33uF 20 DC16WV C730 0257539 Electrolytic 3 3uF DC200WV E5 C731 0279859 Polyester film O 1uF 10 DC100WV D6 C732 0257535 Electrolytic 1uF DC160WV C4 R2
50. m i CR 402 1 ecne Kor 4 IC405 904 t E MEUM Soo 0002 1 7 bi 1 1 j 49 D 2 S d qn KC5B3C HAI26D t SM sU ve Pa D Be Ye Wew f n o 0010 ur i s 714 T P d 5 QUF FEX AMP r z ge 1 i 1 100720 caor 4 10 vei HA looo 220 7 i 7 Bi 4 220 16 R S a mft Ru coor ur 002 Too 16 e YO TUNER AFC ee mm meeen Memo pM tmm as ouo C228 4206 TR20 TR202 C549 74 R20 n220 120 1209 5 682 25 682 ray ING 275 IST VENT Oen 202 mA v Wis 4 e TTL Lee 12202 71 ren iu kd To 29 aa r zQM nne ar 20226 ee aya hs EXE I We Wer inl 2H 4 RO ERAT LU i 221 ER E au ELI LL E las M 227 t T c28 222 R209 500 ga AE 7P 9219 aK t21 pid z iub quiim I 5 x R256 0605 190 E pus MO Pein en R202 259 CR 291 R292 R260 200 mi vir IRE eo 15207 2232 0060 ise 29 38 2 ve 82473 000 Bev ners A 38D VIF ave can oa ain ae 560 2 790 CR 235 Ei melo 5 LUE Gag Wr x z Manut
51. may create shock fire X Ray radiation or other hazards Product Safety is continuously under review and new instructions are issued from time to time For the latest information always consult the current HITACHI Ser vice Manual A subscription to or additional copies of HITACHI Service Manual may be obtained at a nominal charge from your HITACHI SALES CORPORATION TECHNICAL FEATURES 1 ALL TRANSISTORIZED CIRCUIT HITACHI transistor television has always taken the lead in black and white TV and established its high reliability in the market With this experience of solid state technology and the developments of color television skill HITACHI present the finest color television in the solid state world 2 NEW COLOR PICTURE TUBE New HITACHI KEYED O LINE color tube has been developed with high precision technology and skill Precision gun whose grids are unitized in a one piece incorporates large ciameter lens in a narrow neck picture tube This picture tube presents a crisp with its unitized gun and large lenses and bright picture 3 QUICK START CPT Quick start CPT succeeds QUICK START feature without preheating method After turning on the mains switch the picture comes out in five seconds 4 HIGH QUALITY CIRCUITS a Newly designed scanning system and thoroughly studied circuitry produce the beautiful picture and minimize the geometrical picture distortion b Cathode drive circuit by primary color R G B s
52. n 905 sae fmi cya c e 2 2 HIGH VOLTAGE HOLD DOWN CIRCUIT CIRCUIT OPERATION For its high voltage hold down circuit as shown Fig 2 NP5A2X chassis uses a system in which an abnormal high voltage is detected to stop the horizontal oscillation so that the high voltage output may be zero Wher there occurs an abnormal high voltage in the receiver negative pulses on FBT secondary winding are enlarged with the peak voltage at the terminal 1 of the high voltage detective Module M701 increased by clamping the nagative pulse by means of CR714 and C748 Due to this the output voltage of the VOLTAGE DIVIDER the terminal 2 in M701 also rises and it develops a voltage at the terminal 3 through the DETECTOR As result a voltage is applied to the gate of the SCR silicon controlled rectifier TR708 to cause to conduct and its anode voltage becomes roughly zero On the other hand sice the anode of TR708 is connected to the base of the horizontal oscillation transistor TR702 through R748 R710 and R711 when TR708 is caused to conduct the horizontal oscillation will stop and the high voltage output will become OV Since the anode of the SCR TR708 is connected to the emitter of the error amplifier transistor TR907 of the power supply circuit through R748 and CR910 when TR708 is caused to conduct the emitter potential of TR907 drops lower than the base potential and TR907 becomes OFF
53. on yoke TN Nob PEAK NUMERO m gt A2 T001 2141081 AFC tuning transformer 2750011 Antenna telescopic antenna iv 4613543 Wedge B2 T201 2141144 IFT 58MHz i 9413926 Silicon gum for wedge B3 T202 2140143 IFT 58MHz 2750051 Antenna Loop antenna 4782841 Tape for wedge B4 T203 2141355 M10X type of transformer 2685772 Antenna terminal board assembly B4 T204 2141354 M10X type of transformer 1 CANADA 4761722 Operating guide book CR 320 USA 84 T401 2141372 Ratio Det transformer 2683952 Antenna terminal board assembly USA 4761723 Operating guide book CR 320 x B4 T402 2250321 Sound output transformer CANADA A5 501 2141533 Band pass transformer 2507002 Board Signal P W board CR 316 4761724 Operating guide book CR 316 USA 2 04 7701 2161342 H OSC transformer 2507003 Board Signal P W board CR 320 4761725 Operating guide book CR 316 A D4 7702 2260021 drive transformer 2507022 Board Power Def P W board CANADA A D6 T703 2270491 Pincushion H ASS 2507511 Board C P T P W board 316 A 2760404 Lamp Color lok CR 320 1 86 7704 2431521 Flyback transformer 2507513 Board C P T P W board CR 320 COILS eo CF401 2140631 Ceramic filter ee E X501 2783071 Crystal L001 2121203 Filter coil 83MHz 2771382 C F magnet L002 2141455 Mold IFT 2742271 Coad AC line coad L603 21212031 Filter coil 83MHz 3158591 Cover Back cover assembly USA 3158704 C
54. ormed two minutes after the power supply was turned on If the signal voltage is not certain you may adjust R265 with watching picture on the screen as to be obtained the least noisy picture Then confirm the picture does not wind when power switch is turned on If the picture winds turn R265 clockwise a little D PRINTED WIRING BOARD CIRCUIT 1 CPT BOARD TO SIGNAL 4 TO TO SIGNAL P5 PS TO POWER amp DEF TO POWER ADEF 7 x2 f i 72V 40 PW B P4 M SIONAL d PREIS Ree R G DRIVE POWER 8 HEATER R662 500 8 B ORIVE R88 270 Ra6O 150 Ov wee 320ARB22 6851 2 Ra869 GRID Focus 2K 8 G BXG R858 2K 5 C890 TO POWER OEF Rass 59850 2 099E 704 FBT R BKG E 470K TO POWER amp DEF KI TO CPT wa TO SGNAL Pwa 2 POWER DEF BOARD a TR 70 TR 703 TR 704 250454 B C 254844 6 0 2SCI722BK 2SC937YL BK SYNC ANP M DRIVE OUT x i m am Do L V b erm VEIN n TU am ga ed 22006 635 2 Boos m o doom PI l 2 Im Po o 3soe cna cm x 9035 83012 001 IN 34A cre CRTO4 mer nem 1 C703 m Pu 47K
55. over Back cover assembly CANADA i 26 M rum C HITACHI HITACHI SALES CORPORATION OF AMERICA NATIONAL HEADQUARTERS OFFICE 401 West Artesia Blvd Compton Calif 90220 Tel 213 537 8383 Western Regional Office 401 West Artesia Blvd Compton Calif 90220 Tel 213 537 8383 Eastern Regional Office 48 50 34th St Long Island City N Y 11101 Tel 212 361 3090 Mid Western Regional Office 1400 Morse Ave Elk Grove Village Chicago 111 60067 Tel 312 593 1550 South Western REgional Office World Trade Center 183 2050 Stemmons Freeway Dallas Texas 75207 Tel 214 747 3547 I HITACHI SALES CORPORATION OF HAWAII INC 743 G Waiakamilo Rd Honolulu Hawaii 96817 Tel 841 0431 es HITACHI SALES CORPORATION DE PANAMA S A Apartado 7657 Panama 5 Calle Ramon Arias Y Calle B Edificio Brasil 100 Nuevo Reparto el Carmen Republic de Panama Tel 61 3100 bd M M M u HITACHI SALES CORPORATION OF CANADA LTD 3300 Route Trans Canada Pointe Claire Qu HOR IBI Tel 514 697 9150 CR 316 511 501 CR 320 511 501 Printed in Japan NR R P
56. r switch on Using a leakage Current Tester measure for current from all exposed metal parts of the cabinet antennas screwheads metal overlays control shaft etc particularly any exposed metal part having a return path to the chassis to a known earth ground water pipe conduit etc Any current measured must not exceed 0 5mA ANY MEASUREMENTS NOT WITHIN THE LIMITS OUTLINED ABOVE ARE INDICATIVE OF A POTEN TIAL SHOCK HAZARD AND MUST BE CORRECTED BEFORE RETURNING THE RECEIVER TO THE CUS TOMER High Voltage This receiver is provided with a hold down circuit for clearly indicating that voltage has increased in excess of a predetermined value Comply with all notes described in this Service Manual regarding this hold down circuit when servicing so that this hold down circuit may correctly be operated Serviceman warning With minimum brightness and Contrast operating high voltage in this receiver is lower than 25 0KV In case that components having any influence upon high voltage is replaced confirm that high voltage with minimum brightness and Contrast is lower than 25 0KV if the high voltage is higher than 25 0KV reconnect size adjustment 1P plug in POWER DEF PWB from S terminal to M termina or from M to L terminal and reconfirm that the high voltage is lower than 25 0KV components influencing the high voltage C716 C78 C720 C728 C743 R710 C717 C719 C721 C728 FBT 711 M901 DY R732 To measure H V use a hig
57. t C007 2 D 869 Il 11260 R002 gaor tuo 1 E cs29 T E 2 0053 R537 R 105V il 8 t pet ICAO 470 T S 6K R516 220 CRS06 P3 D Hbi KC583c TM 180 E bre TR203 216 CR20 L20 1209 41 058 14 Ys fia xo ene gt 25 717 47 IN6O 270 83 4SMHx PIN TOV 5 6k TR20 SRO VIF giv mus RB 9 TR652 ios T R203 29 P2 yny i IF AMP TR203 Woo C523 RSH RSIS CSl2 CSl4 n 20 at S 20 AP 5n 1 0022 R10 Too 470 6 001 470 Y K 8 2 S c233 wem 0 iw Bu m Res t i Reis s QV E a oat e ped 9 L 4 Ts 50 8 1 25c458 D E P oii y s 2212 2 2 R214 C253 R256 O CR306 TR852 GRID 5 um 9 Ex ped 1 8 8 6 RBS REESE TE Treo ie Su 296708 lene o a TR303 EN ES E TE 8287 252 2 8 DRIVE DRIVE DET oa pr 15K i JI 34430 254844 aan E E 5 R275 5 sz 5 6 TR304 duos T ez o rum Dy CR254 CI TR253 2NO VIDEO 9 Jon Rer SN 60 NAA 5v C255 hd R255 SRO VIOEO t cur 853 e 680P 82V 560 TR RB6I Re55 2K B 50850 I TR252 9 270 To R_BKG 256 R261 Sy za CR253 R302 rra OO 0 1 100 8 2K 152076 152475 330 100 6 85
58. t position by lightly tightening a screw Fig 5 Pull out B plug P4 and check the red purity If we PE a impurity still remains slightly move the deflection yoke backward and forward until the impurity disappears Make a similar check of the blue purity B plug P4 and the green purity G plug P3 7 The above adjustments were made with the TV set facing northward Turn the set so that it faces southward and demagnetize by means of the demag CPT funnel from right above to prevent the deflection netizing coil and then check the red green and blue purity respectively If some impurity is seen still yoke from tilting excessively ud 5 Make sure that the vertical center line is within remaining move the deflection yoke backward and Vertical 6 pole adjust by sliding 5mm_ 21 5 from the geometric center line If forward to make adjustments and make a similar magnet rings this condition is not satisfied turn the purity magnet check again with the set turned to face northward rings to make adjustment without disturbing the 8 The purity adjustment is now completed Fasten equality in size of the color impurity areas on both the deflection yoke by tightening the screw Fig 5 sides In doing this the amount of movement in a while paying attention to the tilting of the picture vertical direction should be limited to within 32mm Heddon 6 pole adjust by rotating

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