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Service Manual - International Arcade Museum

1. 2 2 24 29 DIMENSIONS 20 406 x 17 716 D x 14 281 H FOR KGR H V TYPE DIMENSIONS FRONT 16 562 x 17 716 D x 18 218 FOR KGR V TYPE WARNINGS AND CAUTIONS A BEFORE YOU START You should never attempt to work on a monitor chassis if you are not familiar with servicing procedures and precautions necessary for high voltage equipment Any television or monitor has three sources of possible danger Strong electric shock due to high voltage or unisolated AC line voltages X ray radiation and implosion Therefore please read this chapter carefully You should NEVER ATTEMPT to modify any circuit in this monitor You should do service work only after you are thoroughly familiar with all of the warnings and safety measures printed in this chapter WARNINGS HIGH VOLTAGE Fhis monitor contains high voltages capable of delivering lethal gauntities of energy To avoid danger do not attempt to service the chassis until you have observed all precautions necessary for working on high vollage equipment X RADIATION This chassis has been designed for minimum X radiation hazard However to avoid possible exposure to soft X radiation it is imperative that you NEVER modify the high voltage circuitry IMPLOSION HAZARD if you drop the monitor and the picture tube breaks IT WILL IMPLODE Shattered glass and the y
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3. PARTS LIST ARE USED TO PREVENT SHOCK FIRE HAZARD AND EXCESSIVE X RADIATION ALL THESE SPECIAL COMPONENTS MUST BE REPLACED ONLY WITH THE SAME TYPE IDENTICAL TO THOSE IN THE SCHEMATIC DIAGRAM ANO PARTS LIST modified slightly for better performance 5 All valves of comporrents shown in diagrom am valid for both model All resistors are 14 watt unless otherwise noted All capacitors MFD unless otherwise noted This is standard schematic diagram some sets may be except C514 27 615 033 616 043 8722 1000 2Wi 8723 800 LL j LIW 8615 100K amp 23 524 3 SK ITW 618 33 B 108V for model IOHA PWB 1378A VOLTAGE MEASUREMENT CONDITIONS RED DC voltages are measured with VIVM placed between points GREEN OUTPUT indicated and chassis ground line voltage set at 120V AC and BLUE OUTPUT controls set for normal picture unless otherwise indicated 2 Voltages without parenthesis measured with 1000 V B amp W or Color signat 13K 56801 5680 510YT82 8523 2 4 7K 124 R878 3 31 aw HV234N 011 mc 0501 25D401AK 0502 250 256207350 VERT OUTPUT C51 1 j PWB 1377 m C620 250V 0602 0602 2505008 160 2 n 0 nae lt 4 1 FBT HV SCREEN 3 us Te ORI wow Soo 60 R623 1 10
4. Tg s NS y x 5 9 We 58 9 i i 13 ges 74 a __ oan res 2 Q fers Is s zir TEMEA 4 2089 5 8 jo 15 5 836 840 93989 5 c 9159 1 Jal 9 su 00 o 5504 7 BIBS 5905 1 4 1198 m gt 09 o e 2082 003 isis F ay 858 n 8 gr rosu 9 528H vESH Zr 3 Wo a 9 4 Q 9085 108 2 HF M Solo 8292 2 1080 8 TZ8H ol 2 vosy otal 5598 10802 Gp E 4 985 D F7 2293 5159 599 er son lg 9 2 lS 4 Oe zr 92 2052 4 286 FONE 3 AEE 8 Ox 5698 gt 228 2091 zi 3 5 u 10941 8 E lt 184 1M s gi 7090 7090 E S19H 4t 0152 oso A c 9 3 S To O QUE IN 595 2 ff 9090 9 T OES9H o c eosa 9 2218 20202 0165 N lt lt 1020 9010 8199 sir 9t E 1027 199 wo x ODE pos x 1027 EI o 0 o 0 5 c 10283 5025 o 5 52 p cou NE W uu du 10 4 59 A i 20783 sola 057 129 N gt 5 19 5 19 4 il 4 N 83 51 10153 46 d N 2
5. 1377 0601 68 00 3 3 RUN Id 800 36 9388 RARE 084 OV 7786927 i 390 mm j nd sep EE CAUTION Resistors R619 R623 are factory selected components Refer d OM Wr ui to service manual HIGH VOLTAGE HOLD DOWN CIRCUIT 1 Negative sync signal of peak to poak applied at 12 13 ADJUSTMENT WARNING for proper replacements SCHEMATIC DI CHASSIS CG 1 BLANKING BEAM LIMITER 0801 2501815 0802 2SCiBIS Y VIDEO 0803 25 1815 VIDEO AMF 222 15K 1 W 3802 18K Q 0805 Rs03 OKB coo 9605 agoz 937 V HOLD 1 7 47 42 5 823 58829 GREEN 58 BLUE HORIZ SYNC 1 1 1 1 VERT 2 M 0807 25C1815 Y 1 0809 254101500 R722 SYNC AMP 822 R628 R HORIZ CU iue 4719 20702 244 5 R833 ICON 124 POS SYNC 1 2 2K C808 810 ul 275 29839 160029 VERT e 5 404 1 5 6K 28845 2 tl 0808 9837 0808 25018151 T 3 3 1 2 350 9810 25A1015 0 iav 00v C707 R704 R703 day 1000P 1 10K 620 Tu gt 25N 8712 1508 020703 0704 2502482 u OWER ORIVER 8713 120K 0702 22 6709 DE 680 2720701 amp 2V R706 576 25865 INVERTOR
6. 2 Carbon Film 68 ohm 4W 2 Carbon Film 5 ohm 10W 1095 Cement 27K ohm 2W 5 Oxide Film 33K ohm 2W Film 6 8K ohm 2W 5 Oxide Film 3 3K ohm 2W 5 Oxide Film 56 ohm 1W 5 Oxide Film 10K ohm 2W 5 Oxide Film 1 2W 5 120K ohm 2 Carbon Film 4 7K ohm AW 2 2 2K ohm 1 4W 5 Cabron Film 5 Oxide 1 8K ohm 1 4W 5 Carbon Film 2 7K ohm 1 4W 5 Carbon Film 3 3K ohm 1 4W 5 Carbon Film 4 7K ohm 1 4W 2 Carbon Film 4 7K ohm 1 4W 5 Carbon Film 5 6K ohm 1 4W 5 Carbon Film 6 8K ohm 1 4W 5 Carbon Filme 8 2K ohm 1 4W 5 Carbon Film REF NO PART NO DESCRIPTION REF NO PART NO DESCRIPTION R611 R819 R821 R715 R519 R840 R841 R626 R638 R709 R834 R816 R818 R835 R878 R880 R866 R863 R865 R869 R871 R639 R616 R523 R875 R877 R870 R514 R516 R628 R717 R614 R524 R725 R828 R830 R501 R813 R815 R510 R518 R604 R517 R609 R633 R836 R837 R825 R827 R610 R634 R523 R524 R622 R641 R643 R627 R705 R712 R704 58 1 4P 681J AU 29 1 4P 821J AU 08 1 4P 122J AU 78 1 4P 102J AU 71 1 2P 332J AU 68 1 4P 820J AU 71 1 4P 151J AU 79 1 4P 102J AU 74 1 PHU 153J H 14 1 4M 100K 48 1PHU 822J H 07 2 103 87 MAPSF 102J 51 1 2P 546J AU 07 1 2P 6R8J AU 51 1 2P 153J AU 71 1 2P 332J AU 54 1 2P 682J AU 68 1 4P 180J AU 21 1 4P 150J AU 08 1 4P 680J AU 06 1 4P 101J
7. 0802 2SC1815 Y VIDEO 0805 2SA1015 0 VIDEO 0605 25 1015 0 BEAM LIMITER 0803 2501815 0805 25 1015 0 47P QI 420628 9635 390 10K ov 50 0805 25031 0B 02 V HOLD eK R823 58829 GREEN er 22k 15 nt RBOB C805 3 RBI7 55 i 1K RB27 3927 amp D803 655 235v Kas C803 97806 0803 9 38 02 P RBIS 8824 48830 BLUE e 68 2 2K 215 tt 404 C806 R809 689 9816 61 tat HORIZ 9 13 NEG SYNC 1 1 VERT e 0807 25018155 3 of 0809 25410150 PHASE 1501 HA 1423 SYNC AMP OSC amp ORIV x 5 8625 HORIZ OSC 8 8 Ll HORIZ R833 E gt 100 1241 POS SYNC 1 2 2K AJN C810 25V 17 10 R839 50 U KS 50 T 5 6K 59845 VERT 0808 9837 0808 2SCIBIS Y f 3 3K a A 8v 4 390 2810 25A 015 0 18V 5706 SYNC ov 070 25094504 INVERTOR 0702 2569450 ERROR AMP 715 0703 2547338 820 PULSE SHAPER 1 166 396 CROSS HATCH s poak to applied at 4 sync signal of peak applied at 12 13 ACT2OV 60H7 c Bes ATIC DIAGRAM SSIS NO CG 19B CRITICAL COMPONENT WARNING NOTE THESE CRITICAL COMPONENTS THAT ARE SHADED ON The unit of resistance ohm is omitted 1000 ohms THE SCHEMATIC DIAGRAM AND ASTERISKED ON THE
8. Carbon Film 120 ohm 1 4W 596 Cabron Film 33K ohm 1 4W 596 Carbon Film 820PF 50V 1096 Discap 82PF 50V 596 Discap MODEL LABEL Automatic Degaussing DESCRIPTION H CENTER Q 602 heat sink RAD P 1105 Focus amp Screen Power Rectifier 18 ohm 5W 1096 Cement So 1085 cover MODEL LABEL Automatic Degaussing LUG 301UL Horiz output width size 1 ohm 1 2W 596 Fusable 39uF 400V 5 polypro 50V 596 polypro 047 uF 50V 5 polyester 820PF 50V 10 Discap 82PF 50V 5 Discap Rectifier 100 ohm 3W 596 Oxide Film 220 ohm 3W 5 Oxide Film 3009 H Center 39uF 400V 4 596 Polypro 160V Decouple PWB 1498 Smait 3 PIN 15K ohm 1 2W 5 Carbon Film 18K ohm 1 2W 5 Carbon Filrn 120 ohm 1 4W 5 Carbon Film 33K ohm 1 4W 5 Carbon Film CHASSIS LABEL F KGR 1902H PARTS DIFFER FROM KGR 1902HA PARTS REF No L602 R627 R722 R524 R523 C614 C615 C616 C614 G KGR 1902H PARTS DIFFER FROM KGR 1903H PARTS REF No 0708 0709 0705 0701 0701 0702 0703 0701 0709 C503 C628 C807 C808 C503 C628 C807 C808 KGR 1902H PARTS No 32 CHAS TV 1026 71 STOP CORD 016 03 ANG FIX 1222 61 8 45 TB3 5V 12 64 5 8S 16 LABEL 1975 32 ANG HOLD 1076 R 34 ANG HOLD 1076 L 25 6SW 62 6 5W 18 1 65 41 67 205 48 6NA S 31 CHK SHT 1008 47 PACK CASE 1776 NONE 73 CRT 510YTB22 TCO1 69
9. R513 R612 R622 R627 R613 R619 8619 H620 R621 R623 R701 R702 R718 R719 R720 R722 R875 R877 R617 R706 R708 R721 R509 R711 R714 R716 R822 R824 R832 R833 R630 R504 R625 R844 R845 R613 R721 R624 R804 R805 R806 R807 R809 R838 R839 R606 R710 R502 R505 R507 R508 R521 PART NO DESCRIPTION 83 DSL 5 688J AU 79 CU 5 102Y 31 DX 5 156K 55 D 1 4K 105P 81 CU 5 103H 85 ML 5 105J RESISTORS 88 2PHU 152J H 62 3PHU 271J H 48 2PHU 182J H 44 1PHU 561J H 82 2PLU 1R5J H A4P 472G 50 4P 121G 38 P 331J 50 4P 183G 66 4P 822G 61 4P 680G AU 53 10LCU 5ROK W 32 2PHU 273J H 76 2PHU 333J H 75 2PHU 682J H 03 2PHU 332J H 81 1PHU 560J H 07 2PHU 103J H 05 2FRNL 1ROJ 29 4P 124G 44 4P 472G 85 1 4P 222J AU 13 1 4P 182J AU 15 1 4P 272J AU 59 1 4P 332J AU 44 14P 472G AU 80 1 4P 472J AU 82 1 4P 562J AU 42 14P 682J AU 13 1 4P 822J AU 68PF 50V 5 Discap 1 0PF 50V Electrolytic 1500PF 50V 10 Discap 01 F 1 4KV 0 100 Discap 50V Electrolytic 014 50V Electrolytic 1 5K ohm 2W 5 Oxide Film 270 ohm 3W 5 Oxide Film 1 8 ohm 2W 5 Oxide Film 560 ohm 1W 5 Oxide Film 1 5 ohm 2 W 5 Oxide Film Carbon Dilm 4 7K ohm AW 2 Carbon Film 120 ohm ZW 2 Carbon Film 330 ohm W 5 Carbon Film 18K ohm 2 Carbon Film 8 2K ohm
10. REF No F601 KGR 1901H PARTS No NONE 61 85 14 VRB R 1137 NONE NONE NONE NONE 79 STAND PRO 1005 42 LABEL 1829 Automatic Degaussing REF NO PART NO DESCRIPTION MISCELLANEOUS 82 SO 1190 001 16 SO 098A 065 07 SO 078A 106 48 PLUG 025A 32 PLUG 026A 35 PLUG 1147 53 PLUG 1146 89 PLUG 028A 88 TIP 021 134 66 TIP 021 135 44 TIP 021 136 65 TIP 021 131 43 TIP 021 132 87 TIP 021 106 21 TIP 021 133 79 STAND PRO 1005 61 HOLD WIRE 1006 31 CHK SHT 1008 82 BAG DATA 1006 42 HOLD WIRE 1030 KGR 1901V PARTS No 49 CHAS TV 1029 36 ANG HOLD 1094 R 38 ANG HOLD 1094 L 41 LABEL 1861 55 PACK CASE 1724 KGR 190V PARTS No 05 RAD P 1105 A 49 CHAS TV 1029 85 LABEL 1976 36 ANG HOLD 1094 R 38 ANG HOLD 1094 L 19 PACK CASE 1777 KGR 1903V PARTS No 57 CHAS TV 1029 A 45 LABEL 1978 36 ANG HOLD 1094 R 38 ANG HOLD 1094 L 77 PACK CASE 1784 KGR 1902H PARTS No PWB 1498 001 NONE NONE 80 LUG 1071 59 50 151887 81 5LC 180J W 04 COV SOC 1002 NONE 32 LABEL 2023 20 CORD SOCKET V CENTER E MARK SMALL TYPE 3 PIN SMALL TYPE 5 PIN MICRO TYPE 6 PIN MICRO TYPE 3 PIN LARGE TYPE 2 PIN FBT CAP RAD P 1105 DATA BAG DESCRIPTION MODEDL LABEL DESCRIPTION Q 602 heat sink MODEL LABEL DESCRIPTION MODEL LABEL DESCRIPTION RAD P 1105 Focus amp Screen Power Rectifier 18 ohm 5W 10 cement So 1085 FB T Cap CHASSIS LABEL REF R722
11. 02 ST 28C1815Y 02 ST 28C1815Y 02 ST 28C1815Y 22 ST 28A10150 22 5 25 10150 71 TRNS FB 3015 73 3PHU 682J H 76 2PHU 333J H NONE NONE NONE NONE NONE 07 50 151887 AU 49 RECT SI 154 37 3PHU 101J H 43 3PHU 221J H 23 VR R 1012 01 PFC 40 394J 69 CT 16 101Y 61 85 32 LABEL 2023 H KGR 1902V PARTS DIFFER FROM KGR 1903V PARTS REF No D708 D709 R724 Q705 0705 0705 0701 0702 0703 0604 0801 0803 0807 0808 0605 0809 0810 0804 0806 T602 R719 R718 C618 R642 R724 R641 R643 R723 0701 0704 D607 D608 0701 0704 0708 0709 C606 C628 C628 C807 C808 C503 C628 C807 C808 Q701 Q702 Q703 O604 0801 0803 0807 0808 0605 0804 0806 0809 0810 0607 0608 R643 R723 R641 R642 C618 C729 KGR 1902V PARTS No PWB 1377 PWB 1377 21 PWB 1498 001 80 LUG 1071 59 SD 181887 81 5LC 180J W 49 SHAS TV 1029 04 COV SOC 1002 42 HOLD WIRE 1030 85 LABEL 1976 69 COIL ADG 1017B 64 TB3 5V 8S 23 LAY OUT 1047 19 PACK CASE 1777 68 5 250819 27 RAD P 1067 22 TB3P 125 07 RAD P 1068 16 ST 2SC945 Q R 70 5 25 9450 31 ST 28A733 Q R 02 ST 28C1875Y 02 5 25 1815 02 ST 28C1815Y 22 ST 28A10150 22 5 25 10150 71 TRNS FB 3015 73 3PHU 682J H 76 2PHU 333J H NONE NONE NONE NONE NONE 07 50 151887 AU NONE 29 CU 5 103H AU 79 CU 5 102Y AU NONE NONE NONE NONE NONE NONE NONE NONE NONE NONE 49 RECT SI 154 37 3PHU 101J H 43
12. 11 9080 49 M IL 5 AL 477 2 918 e eoo 8 080 t gt ole Jo 1288 2259 91 e 209916 9292 5 2268 2093 5 9099 5 or 9 ol 9 5 Q 19H B om ET a 5 9090 JUR ue 1 2 ee zu gig 201 ajaj H3 1N39 H 90 5 65 9010 1022 102 1021 1881 VS 10 4 Abr o Aly O45 IHE COIT N g 9 c _ 9 o 1129 e 1028 ae Q 1048 5 5 S149 i 4 6079 c e 398 2021 Ser 5 F 6124 gt 5 0124 51 9 IN 8 0001 1418 44 213114 sto 9299 gozo 2 2154 me 8 228z oT amp 3 1091 a 5 EE 91 70209 SC vite 151 A n 5 ToT 1016 1090 arm 3Sna ASZI SWVS HLIA AINO 3813 LSNIVDY NOILO31OHd GSNNILNOD NOILNY LNOAVT LN3NOdWOO REPLACEMENT PARTS LIST PARTS L IST It is recommended to use genuine factory SAMPO replacement parts to assure fine performance HOW TO ORDER REPLACEMENT PARTS To have your order filled promptly and correctly please furnish the following informations 1 MODEL NUMBER 2 REF NO 3
13. 220 ohm 3W 5 Oxide Film 30082 H center 39 uF 400V 5 Polypro 100 uF 160 Decouple PWB 1498 CHASSIS LABEL DESCRIPTION Complete Circuit Except output R G B output H center Power Rectifier Degaussing 50 1085 Cover Wire holder MODEL LABEL Automatic Degaussing ANG FIX 1222 FIX LUG 1071 Power output Radiative plate Radiative plate Invertor Error Amplifier Pulse Shaper Blanking Video Amplifier Invertor Beam Limiter Video Amplifier Horiz output 39 uF 400V 5 Polypro 300Q H center 18 ohm 5W 10 Cement 220 ohm 3W 5 Oxide Film 100 ohm 3W 5 Oxide Film Power Rectifier 1 uF 50V Electrolytic 10uF 50V Electrolytic 1 uF 50V Electrolytic 10 pF 50V Electrolytic Invertor Error Amplifier Pluse shaper Blanking Video Amplifier Invertor Beam Limiter Video Amplifier Rectifier 100 ohm 3W 5 Oxide Film 220 ohm 3W 5 Oxide Film 3009 H center 39 uF 400V 5 Polypro 100 uF 160V Decoupie PWB 1498 CHASSIS LABEL SCHEMATIC DI CHASSIS NO CG 19 0801 25 1815 0804 25 1015 0 0604 2SCIBISIY BLANKING 0802 25 1815 VIDEO 0805 254101510 VIDEO 0605 2SA 015 0 BEAM LIMITER 0803 25 1815 0806 25410150 R625 390 9819 680 chi o 0804 080 Space 0801 APT 4 7 9813 R822 RED 66 22K R828 15 9807 l
14. 478J AU DESCRIPTION 015 200V x 10 Polypro 220PF 50V 5 Discap 1 uF 50V Electrolytic 470PF 50V 10 Discap 1 50V x 595 Polyester 82PF 50V 5 Discap 6800PF 50V 20 Discap 1 50V Electrolytic 0047 630V x 5 Polypro 001 50V 5 Polyester 47 u F 50V Electrolytic 33 10V Electrolytic 680PF 500V 10 Discap 330PF 2KV 10 Discap 022 uF 630V x 595 Polypro 027 630V x 57 Polypro 39 400V x 59 Polypro 4 7 250V Electrolytic 470 25V Electrolytic 2200PF 500V 10 Discap 4 7 F 50V Electrolytic 470PF 500V x 10 Discap 10PF 500V 0 5PF Discap 3900 uF 500V 10 Polyester 10uF 50V Electrolytic 3 3 uF 50V Electrolytic 047 200V 5 Polypro 47 100V Electrolytic 068 50V 5 Polyester 2200PF 500V 10 Discap UL Specy 125V Nonpolar 01 500V 20 Discap 1000PF 50V 20 80 Discap 680PF 50V 10 Discap 4700PF 50V 10 Discap 100 25V Electrolytic 2700PF 500V x 10 Discap 022 50V x 5 5 Polyester 470 200V Electrolytic 220PF 500V 10 Discap 001 630V 10 Polypro 330 160V Electrolytic tang 5 1000PF 500V x 10 Discap 1004F 160V decouple 47PF 50V 5 Discap REF NO C804 C806 C807 C840 C842 C844 C809 C810 C712 R511 R512
15. LABEL FBT EARTH PWB 1378 INSULATION BOARD CORD FIX SOCKET H CENTER CRT EARTH IMRE 0602 ACCESSORY WITH Q602 DESCRIPTION MISCELLANEOUS 28 COIL ADG 1017 F701 62 FUSE 052 82 0 1190 001 79 STAND PRO 1005 38 0 1029 22 0 1085 Fuse 3 5A ST6 AC Cord Socket FBT Cap 20 Pin Socket CRT Socket 56801 56805 74 SPARK AG 20MKT Spark Gap 52806 87 1006 89 RAD P 1112 27 RAD P 1067 78 1117 07 1068 50 RAD P 1105 61 TB P 8S RAD P 1105 22 TB P 125 0705 43 3P 55 Q501 Q502 55 HOLD FS 021 F701 FUSE HOLDER 0705 10 LUG 032A H CENTER 04 LUG 992 TP802 TP801 TP601 TP602 TP701 10 LUG 032A CRT NET WIRE a a CHASSIS NO CG 19A Spark Gap RADIATIVE PLATE RADIATIVE PLATE RADIATIVE PLATE RADIATIVE PLATE Q 602 HEAT SINK A KGR 1901H PARTS DIFFER FROM KGR 1901V PARTS REF No CHASSIS NO CG 19B KGR 1901H PARTS No 32 CHAS TV 1026 32 ANG HOLD 1076 R 34 ANG HOLD 1076 L 62 LABEL 1828 50 PACK CASE 1689 B KGR 1902H PARTS DIFFER FROM KGR 1902V PARTS REF No CHASSIS NO CG 19C KGR 1902H PARTS No 50 RAD P 1105 32 CHAS TV 1026 16 LABEL 1975 32 ANG HOLD 1076 R 34 ANG HOLD 1076 L 47 PACK CASE 1776 C KGR 1903H PARTS DIFFER FROM KGR 1903V PARTS REF No KGR 1903H PARTS No 40 CHAS TV 1026 A 65 LABEL 1977 32 ANG HOLD 1076 R 34 ANG HOLD 1076 L 16 PACK CASE 1783 D KGR 1901H PARTS DIFFER FROM KGR 1092H PARTS
16. PART NO 4 DESCRIPTION CRITICAL COMPONENT WARNING These critical components that are shaded on the schernatic diagram ang gous i Hist are used to orevent shock fire hazard and excessive X radiation must be replaced only with the same type identical to those in the schereate and ME NNNM REF NO PART NO DESCRIPTION REF NO PICTURE TUBE 20702 POR701 CRT 10 CRT 510YTB22 Includ Deflection TC01 Yoke amp Static Conv FB601 Assembly FB701 FB702 F601 TRANSISTORS 0501 0502 55 ST 2SD401AK Vert Output 13 ST 28C2073 SO Q601 05 ST 28C2482 Horiz Driver L601 Q602 72 ST 2SD900B Horiz Output L602 Q604 02 ST 28C1815Y Blanking L701 Q605 22 ST 2SA10150 Beam Limiter L807 Q701 16 ST 2SC945Q R Invertor Q702 70 ST 28C945Q Error Amplifier Q703 31 ST 28A733Q R Pulse Shaper Q704 05 ST 28C2482 Power Driver 66 ST 28C1514BK 0705 68 ST 28D819 Power Output T601 Q801 Q803 02 ST 28C1815Y Video Amplifier T602 0804 0806 22 ST 28A10150 Video Amplifier T701 0807 0808 02 ST 2SC1815Y Invertor T702 22 ST 28C10150 Q811 76 ST 28C1514 15 Red Output Q812 76 5 25 1514 15 Green Output Q813 76 ST 28C1514 15 Blue Output R503 R515 R522 INTEGRATED CIRCUIT R608 R707 R867 R868 1501 57 51 11423 Vert OSC amp Drive Horiz R872 R874 OSC amp X RAY Limiter R525 DIODES 0501 0503 76 SD IN4148 AU Protector 0601 0603 57 RECT SI 1021 AU Rectifier 20V 0604 0605 76 SD IN4148 AU 0606 07 RECT SI 1058 R
17. R605 R615 R706 R708 R640 R713 R801 R803 39 3PHU 101J H 49 180 81 5LC 180J W 39 1 4P 153J AU 63 1 4P 103J AU 69 1 4P 223J AU 43 1 4P 333J AU 48 1 4P 393J AU 26 1 4P 683J AU 47 1 4 104 29 1 4P 124G AU 65 1 4 124 100 ohm 3W 5 Oxide Film 18 ohm 5W 5 Cement 18 ohm 2W 5 Cement 15K ohm 1 4W 5 Carbon Film 10K ohm 1 4W 5 Carbon Film 22K ohm 1 4W 5 Carbon Film 33K ohm 1 4W 5 Carbon Film 39K ohm 1 4W 5 Carbon Film 68K ohm 1 4W 5 Carbon Film 100 K ohm 1 4W 5 Carbon Film 120K ohm 1 4W 2 Carbon Film 120K ohm 1 4W 5 Carbon Film PRINTED WIRING BOARD ASSEMBLIES 77 PWB 1377 81 PWB 1378A 21 PWB 1498 79 PWB 1467 2701 50 80 50805 56806 Complete Circuit Except Output R G B Output Complete circuit Except R G B output Complete circuit Except R G B output MISCELLANEOUS 80 LUG 1071 08 COIL ADG 1017A 69 COIL ADG 1017B 62 FUSE 052 74 SPARK AG 20MKT 87 SPARK 1006 09 LABEL 1830 16 LABEL 1894 73 LABEL 1661 65 LABEL 1896 35 LABEL 1915 01 LABEL 1944 77 EARTH P 1022 41 ISL P 1076 71 STOP CORD 016 79 STAND PRO 1005 61 TIP 002 ACS ST 1001 8 2W 12 0 65 AUTOMATIC DEGAUSSING COIL FOR KGR 1901 H V AUTOMATIC DEGAUSSING COIL FOR KGR 1902 H V FUSE 3 5A SPARK GAP SPARK GAP CRT LABEL WARNING LABEL DHHS LABEL WARNING LABEL CSA CERTIFIED LABEL CSA CERTIFIED
18. high white picture areas Generally these controls will be left at mech centre 9 FRONT VIEW Magenta face declining yoke Figure 5 FRONT VIEW Red Blue Let the red and plue lines come in line Figure 6 by turning two 4 pole magnets FRONT VIEW Green Magenta 4 letthe green and magenta lines come inline by turning two 6 pole magnets Figure 7 FRONT VIEW Red Green Blue A N Biue Green Red Tilting the yoke to the right will move Figure 8 the lines as shown with the arrows 3 7 4 0 5 0 Note When monitor is re connected with the game the screen control may require a slight adjustment to obtain proper black level the black portion of picture just extinguished Power Supply The regulated control R707 has been factory adjusted and normally requires no adjustment However if any repairs have been made to the chassis it is recommended that this adjustment should be made a Allow 5 minutes to warm up b No signal applied c Connect an accurate D C voltmeter to R612 d Adjust R707 and test point for 110V and ensure R513 89 2V Note Should B1 control be set too high it may cause possible component damage Use an accurate D C Voltmeter to set B1 B 4 Focus Adjust focus control for best overall definition and picture detail an average signal applied Highl
19. 070 259650 INVERTOR 0702 2569450 ERROR AMP RNS 0703 25 733 820 PULSE SHAPER LCG 396 CROSS peak to peak 4 Negative sync 1 peak applied at ACI20V 60HZ 28 MATIC DIAGRAM CHASSIS NO CG 19C 3 R525 10KIBI V CENTER 050 0507 256207350 VERT OUTPUT 1423 v RT OSC amp ORIVE HORIZ OSC amp LIMITER 1601 2522462 HORIZ ORIVER Cua Wreur 0602 0607 22013 R620 VER 64 2509008 r R642 30018 A H CENTER 100 3 CRITICAL COMPONENT WARNING THESE CRITICAL COMPONENTS THAT ARE SHADED ON THE SCHEMATIC DIAGRAM AND ASTERISKED ON THE PARTS LIST ARE USED TO PREVENT SHOCK FIRE HAZARD AND EXCESSIVE X RADIATION ALL THESE SPECIAL COMPONENTS MUST BE REPLACED ONLY WITH THE SAME TYPE IDENTICAL TO THOSE IN THE SCHEMATIC DIAGRAM AND PARTS LIST m PWB 1378 5 2811 15 RED OUTPUT 0812 GREEN OUTPUT 9813 BLUE OUTPUT 8879 bl 13K 6801 6 209 876 07280 R870 10K 1 240 t u 510Y1822 TCOWP The of resistance ohm omitted K 1000 ohms M t Megohm All resistors are 4 watt unless otherwise noted All capacitors MFD unless otherwise noted PMMFD This 15 standatd schematic diagram some sets may be modified slightly for better performance VOLTAGE MEASUREME
20. 3PHU 221J H 23 VR R 1012 01 PFC 40 394J 69 CT 16 101J 61 8S 32 LABEL 2023 KGR 1903H PARTS No NONE NONE NONE NONE NONE NONE NONE 47 TRNS FB 3016 07 2PHU 103Y H 81 2PHU 393J H 01 PFC 40 394J 23 VR R 1012 49 5LCU 180J W 43 3PHU 221J H 37 3PHU 101J H 87 RECT SI 154 AU NONE NONE NONE NONE NONE NONE NONE 12 LABEL 2024 KGR 1903V PARTS No PWB 1467 PWB 1467 NONE NONE NONE NONE 57 CHAS TV 1029 A NONE NONE 45 LABEL 1978 08 COIL ADG 1017A NONE 88 LAY OUT 1048 77 PACK CASE 1784 70 ST 28C2979 78 RAP P 1117 61 8 47 TRNS FB 3016 07 2PHU 103J H 81 2PHU 393J H 01 PFC 40 394J 23 VR R 1012 49 5LCU 180J W 43 3PHU 221J H 37 3PHU 101J H 87 RECT SI 154 AU 07 50 151887 AU NONE NONE 29 CU 5 103H AU 79 CU 5 102Y AU 08 ST 28C945 Q R 04 ST 2SC9450 AU E 23 ST 2SA 733 Q R AU E 54 ST 28C1815Y AUJ E 54 ST 2SC1815Y 54 ST 2SC1815Y 74 ST 2SA10150 AU E 745 25 10150 NONE NONE NONE NONE NONE NONE NONE 12 LABEL 2024 DESCRIPTION Error Amplifier Pulse Shaper Blanking Video Amplifier Invertor Beam Limiter Video Amplifier Horiz output 39HF 400V 5 Polypro 3000 H center 18 ohm 5W 10 Cement 220 ohm 3W 5 Oxide Film 100 ohm 3W 5 Oxide Film Rectifier 100 ohm 3W 5 Oxide Film
21. 4 1 2P 121J 08 1 4P 122J AU 43 1 4P 333J AU 42 LABEL 1829 KGR 1902H PARTS No 12 2PHU 820J H 48 2PHU 272J H 73 3PHU 682J H 43 1 4P 391J 29 2PHU 222J H 24 2PHU 472J H 05 1 2 FRNL 1ROJ NONE 15 ML 5 475J NONE 23 LAY OUT 1047 47 PACK CASE 1776 18 COIL H SIZE 1008 43 20L 820Y 48 1PHU 182J H 23 COiL H LINE 1025 NONE NONE NONE 09 1 2P 183J AU NONE 23 1 4P 332G 0 72 NONE 11 1 4P 104G AU 72 D 5 827K AU NONE 42 HOLD WIRE 1030 16 LABEL 1975 65 SCHEME DIA 1321 69 COIL ADG 1017B KGR 1902V PARTS No PWB 1498 001 05 RAD P 1105 A NONE NONE 80 LUG 1071 59 50 151887 81 5LC 180J W 04 COV SOC 1002 NONE 42 HOLD WIRE 1030 85 LABEL 1976 65 SCHEME DIA 1321 69 COIL ADG 1017B 64 TB3 5V 8S 23 LAY OUT 1047 19 PACK CASE 1777 71 TRNS FB 3015 18 COIL H SIZE 1008 43 201 820 48 1PH 182J H 12 2PHU 820J H 48 2PHU 272J H 73 3PHU 682J H 43 1 4P 391J 29 2PHU 222J H 24 2PHU 472J H 05 1 2FRNL 1ROJ NONE NONE NONE 72 D 5 827K AU NONE 49 RECT SI 154 37 3PHU 101J H 43 3PHU 221J H 23 VR R 1012 01 PFC 40 394J 69 CT 16 101Y 61 85 11 1 4P 104G 09 1 2P 183J AU 23 1 4P 332G AU NONE 32 LABEL 2023 21 DESCRIPTION 1 ohm 1 2 W 5 50V 5 polyester OTuF 50V 5 polyester Small Type 3 Pin width size Horiz Linearity SO 1085 cover 15K ohm 1 2W 596 Carbon Film 18K ohm 1 2W 596
22. ASE 10K 470 uF 16V Electrolytic 022 50V 10 Polyester 1 UF 50V Electrolytic 01 50V 10 Polyester 1 35V 10 Electrolytic 10 50V 10 Electrolytic 10 63V Electrolytic 22 LF 100V Electrolytic 100 F 160V Electrolytic 022 uF 50V 5 Polyester C511 C513 C601 C602 C603 C604 C605 C606 C607 C608 C609 C610 C611 C613 C614 C615 C616 C618 C620 C622 C623 C624 C625 C626 C627 C628 C808 C629 C630 C632 C633 C634 C702 703 705 C707 C709 C710 C711 C719 C713 C714 C706 C715 C716 C717 C718 C729 C801 C803 PART NO 06 PFA 20 155K 75 DSL 5 227J AU 81 CU 5 103H 52 D 5 A77K AU 30 ML 5 104J 62 DSL 5 828J AU 02 O 5 686M AU 33 CU 5 103H AU 52 PFA 63 476J 87 ML 5 106J 43 CU 5 472J 54 CU 1 332Y 17 D 50 687K AU 65 DK 2K 337K 10 PFB 63 225J 09 PFB 63 275J 01 PFC 40 394J 83 CU 25 473H 17 CU 2 5 471Y 76 D 50 226K AU 82 CU 5 473H 55 D 50 477K AU 02 DSL 50 108D AU 48 DSL 50 398K AU 79 CU 5 102Y AU 61 CU 5 333H 33 PFA 20 475J 48 CU 16 472Y 66 ML 5 85J 76 D 50 226K 73 MPFK 12 5 104K UIC 09 MPF 12 5 104M UL 62 DX 50 105M 35 DX 5 106Z 20 D 5 687K AU 66 D 5 476K AU 16 CU 2 5 101Y 06 D 50 276K AU 05 MLO 5 225J 23 20L 470Y 86 DX 50 227K 29 PFA 63 106K 04 16L 330Y A 70 D 50 106K AU 69 CT 16 101 Y 38 DSL 5
23. AU 24 1 4P 121J AU 75 1 4P 331J AU 80 1 4P 391J AU 07 1 4P 571J AU 09 1 4P 561J AU 48 1PHU 822J H 29 2PHU 222J H 48 1PHU 182J H 43 3PHU 221J H 37 3PHU 101J H 82 2PLU 1R5J H 23 1 4P 154J AU 31 1 4P 105J AU 680 ohm 1 4W 5 Carbon Film 8200hm 1 4W 5 Carbon Film 1 2K ohm 1 4W 5 Carbon Film 1 0K ohm 1 4W 5 Carbon Film 3 3K ohm 1 2W 5 Carbon Film 820 ohm 1 4W 5 Carbon Film 150 ohm 1 4W 5 Carbon Film 1 0K ohm 1 4W 5 Carbon Film 15K ohm 1W 5 Oxide Film 10 ohm 1 4W 10 Carbon Comp 8 2K ohm 1W 5 Oxide Film 10K ohm 2W 5 Oxide Film 1 2K ohm 1 4W 5 Carbon Film 5 6 ohm 1 2W 5 Carbon Film 6 8 ohm 1 2W 5 Carbon Film 15K ohm 1 2W 5 Carbon Film 3 3K ohm 1 2W 5 Carbon Film 6 8K ohm 1 2W 5 Carbon Film 18 ohm 1 4W 5 Carbon Film 15 ohm 1 4W 5 Carbon Film 68 ohm 1 4W 5 Carbon Film 100 ohm 1 4W 5 Carbon Film 120 ohm 1 4W 5 Carbon Film 330 ohm 1 4W 5 Carbon Film 390 ohm 1 4W 5 Carbon Film 470 ohm 1 4W 5 Carbon Film 560 ohm 1 4W 5 Carbon Film 8 2K ohm 1W 5 Oxide Film 2 2K ohm 2W 5 Oxide Film 1 8K ohm 1W 5 Oxide Film 220 ohm 3W 5 Oxide Film 100 ohm 3W 5 Oxide Film 1 5 ohm 2W 5 Oxide Film 150K ohm 1 4W 5 Carbon Film 1000K ohm 1 4W 5 Carbon Film R723 R724 R724 R842 R843 R607 R635 R636 R703 R620 R506 R637 R629 R631
24. CED ONLY 2 All capacitors unless otherwise noted P MMFD WITH THE SAME TYPE IDENTICAL TO THOSE IN THE 4 This is a standard schematic diagram some sets may be SCHEMATIC DIAGRAM AND PARTS LIST modified slightly for better performance VOLTAGE MEASUREMENT CONDITIONS 5 OC voltages are measured with VIVM placed between points indicated and chassis ground line voltage set at 120V AC and PWB 1378 controls set for normal picture unless otherwise indicated t3 aem 2 Voltages without parenthesis measured with T0005 V B amp W or 25 1514 15 RED 2 M 25 1514 15 GREEN OUTPUT olor signe p 28 1514 15 BLUE OUTPUT LAL R523 2 O W S10Y1B22 ICO 6 sDOWN ented ICENTER HV234KV ot 1 PWB 1377 OSC amp ORIVE 5 amp X RAY LIMITER 0602 2509008 0501 O A 15 R620 1 R67 20601 R62 E sociam j OV 2 25V nov 1 LCG 396 CROSS HATCH signal of 2V peak to psak applied at K1 K2 4 Negative sync signal of 4V peak to peak applied at 12 13 CAUTION Resistors R619 R623 are factory selected components Refer 10 service manual HIGH VOLTAGE HOLD DOWN CIRCUIT ADJUSTMENT WARNING tor proper replacements 25 SCHEMATIC DIA CHASSIS CG 19B 0801 2SC B 5 Y 0804 254101510 Q604 25CIBI5 Y BLANKING
25. COIL ADG 1017B 61 SPRING 002 42 HOLD WIRE 1030 22 HOLD WIRE 1031 64 TB3 5V 8S 55 125 29 4SW 81 4 2 12 1 05 18 COIL H SIZE 1008 82 2PLU 1R5J H 12 2PHU 820J H 29 2PHU 222J H 24 2PHU 472 H 10 PFB 63 225J 09 PFB 63 275 NONE 61 8S 32 LABEL 2023 KGR 1902H PARTS No PWB 1377 PWB 1377 PWB 1498 001 80 LUG 1071 59 50 151887 81 5LC 180J W 32 55 1026 04 COV SOC 1002 42 HOLD WIRE 1030 16 LABEL 1975 65 SCHEME DIA 1321 69 COIL ADG 10178 64 TB3 5V 8S 23 LAY OUT 1047 47 PACK CASE 1776 68 ST 2SD819 27 RAD P 1067 22 TB3P 12 07 RAD P 1068 16 ST 28C 945 Q R NONE NONE NONE NONE 29 CU 5 103H AU 79 CU 5 102Y AU NONE NONE KGR 1902HA PARTS No NONE NONE NONE NONE NONE NONE 11 LABEL 2006 NONE NONE NONE NONE NONE NONE 07 CHK SHT 1009 NONE 71STOP CORD 016 NONE NONE NONE NONE NONE NONE NONE NONE NONE 61 8S 64 TB3 5V 85 42 HOLD WIRE 1030 51 PACK CASE 1794 58 PACK AD 1381 34 PACK AD 1382 75 PACK AD 1384 10 PACK AD 1383 09 SPONGE 1027 58 TPE PP 75 KAK 914M 87 COIL H SIZE 1013 34 2PLU IR8J H 39 2PHU 101J H 08 2PHU 392J H NONE 65 PFB 63 335J 09 PFB 63 275 60 3PHU 181J H NONE 32 LABEL 2023 KGR 1903H PARTS No PWB 1467 PWB 1467 NONE NONE NONE NONE 40 CHAS TV 1026 A NONE NON
26. E 65 LABEL 1977 35 SCHEME DIA 1322 08 COIL ADG 1017A NONE 88 LAY OUT 1048 16 PACK CASE 1783 70 5 25 2979 78 RAD P 1117 NONE NONE NONE 08 ST 2SC945 Q R AUIE 04 5 25 9450 AUJE 23 ST 2SA733 Q R 07 50 151887 AU NONE NONE 29 CU 5 103H AU 79 CU 5 102Y AU 99 DESCRIPTION CORD FIX socket Fix angle CHAS TV 1026 CHAS TV 1026 ANG FIX 1222 MODEL LABEL ANG HOLD 1076 ANG HOLD 1076 ANG HOLD 1076 CORD Fix socket Automatic Degaussing Spring Wire holder Wire holder LUG 1071 CHAS TV 1026 CHAS TV 1026 CHAS TV 1026 PWB 1498 Fix LUG 1071 Wire hoider MAIN CHAS MAIN CHAS MAIN CHAS MAIN CHAS MAIN CHAS CRT PCB width size 47 ohm 2W Oxide Film 180 ohm 3W Oxide Film PWB 1498 CHASSIS LABEL DESCRIPTION Complete circuit Except R G B output R G B output H center Power Rectifier Degaussing SO 1085 cover Wire holder MODEL LABEL Automatic Degaussing LUG 1071 Power output Radiative plate FIX Q 705 Rad ative plate Invertor Invertor Error Amplifier Pulse shaper Power Rectifier 50V Electrolytic 10 uF 50V Electrolytic 1 uF Electrolytic 10 uF 50V Electrolytic 0702 0703 0604 Q801 0802 0803 Q807 807 0605 0804 0806 0809 0810 T602 R719 R718 C618 R642 R724 R641 R643 R723 D607 D608 D607 D608 R643 R723 R641 R642 C618 C729 KGR 1902H PARTS No 70 5 25 9450 31 ST 28A733 Q R
27. H25S 010 Q10H A NIT A 3ZIS A S204 9095 0GH 2284 a 1 88666941 50 9 3SVHd H Y3LNID A amp 99 2 M 9099 091 7030 184 2 999091 7099 e e H ie 13 8029 9022 LOL 1041 1043 2041 09 2030 BD 1S Q 20 9 D 700 2048 079 30 8 92 1798 355 143 9 LOOL CZELAOLS 149 12 LAYOUT FOR KGR 1903 F Q10H H NITA 3ZIS A 8098 2054 2244 468 3SVHd H 8 32 Naan 8080 183 1050 3090 1080 OSI 9030 2 SOLO ee ev 9 3 5089 On O 212 0 L De 00 20 1 1024 LT 5 T Rai UI m 2 9 70 9 2044 1049 AIBW3SSV 189 1021 2281 015 145 13 PCB COMPONENT LAYOUT 1279 PWB 1378A gt R877 R863 m b R876 ENS o gt asii h nese 2 5680 2 e 50 0 asiz 49 5 6 T A 5 Ub 3 8 o L 5 650 i g c z R869 g er c 2 lo 69 Olo O 9 50805 oo One K7 C844 J3 V s Q L807 5 H CENTER CONTROL PCB LAYOUT WS 31N39 H p Q30H A NI1 A 3215 LL Md B 80984 umop saqueo 5055 ZZSH SISH 4 pt ia LLL a 1 3E E
28. NG PARTS When discharging go from ground to anode and use a well insulated piece of wire D COMPONENT REPLACING It is important for you to maintain the specified values of all components in the high voltage circuits and anywhere else in the monitor that could cause a rise in high voltage or in operating supply voltages Refer to the parts lists in the back of this manual and use ONLY EXACT REPLACEMENT PARTS especially for the picture tube semiconductors transrormers coils and fuses E FINAL TESTING Before installing the color monitor you must check the following 1 Inspect all harness wiring on the monitor and be sure none of it is pinched between the chassis and other metal parts in the monitor 2 Replace all protective devices such as insulating fishpaper compartment covers and shields A INPUTS SPECIFICATIONS 1 INPUT VOLTAGE 120 volts 60Hz KGR 1901 120 volts AC 47 63 HZ KGR 1902 2 INPUT VOLTAGE RANGE 102 VAC to 132 VAC 3 INPUT POWER AT 120V AC 55 watts typical 4 Input Pin Assignments for K PLUG Pin No K2 K3 K4 K5 Positive K6 Positive 11 12 Negative 13 Negative Description Red input Green input Blue input Ground Vertical sync pulse Horizontal sync pulse Ground Vertical sync pulse Horizontal sync pulse B BANDWIDTH 5 5MHz at 3dB point C HIGH VOLTAGE 25 5KV typical at 120V AC and 0 zero beam D CONTROLS See adjustable contro
29. NT CONDITIONS DC voltages are measured with VIVM placed between points indicated and chassis ground line voltage set at 120V AC and all controls set for normal picture unless otherwise indicated Voltages without parenthesis measured with 10005 V B amp W or Color signal R668 2009 B DRIVE Ay 6520 47 250 0602 LI T602 R616 10 KS 6613 330P 0601 R623 6816 LCG 396 CROSS HATCH signal of 2V peak to peak applied at K2 4 Negative sync signal of 4V peak to peak applied at 12 13 FBT 3016 PWB 1377 HV234KV ot 1 FBT SCREEN FOCUS 8517 zt FR E CAUTION Resistors R619 R623 are tactory selected components Refer to se ce manual HIGH VOLTAGE HOLD DOWN CIRCUIT MENT WARNING for proper replacements SAMPO CORPORATION OF AMERICA Headquarters 1050 Arthur Ave Elk Grove IL 60007 Service Dept 5550 Peachtree Industrial Blvd Norcross GA 30071 Printed in Taiwan PRINTED IN TAIWAN SEP 1982
30. R612 R719 R619 R524 R617 C603 L602 C706 R622 L601 R628 R604 R519 R629 R706 R708 C604 KGR 1901H PARTS No 81 2PHU 560J H 46 2PHU 182J H 75 2PHU 682J H 38 1 4P 331J 48 1PHU 822J H 10 LUG 032A NONE 30 ML 5 104 J NONE 48 PLUG 025A 47 LAY OUT 1046 50 PACK CASE 1689 30 COIL H SIZE 1012 23 20L 470Y 44 1PHU 561J H 23 COIL H LINE 1006 04 COV SOC 1002 42 HOLD WIRE 1030 51 1 2P 153J AU NONE 24 1 4P 121J AU 08 1 4P 122J AU 43 1 4P 333J AU 29 1 4P 124G AU NONE 62 DSL 5 828J AU NONE 62 LABEL 1828 10 SCHEME DIA 1287 08 COIL ADG 1017A E KGR 1901V PARTS DIFFER FROM KGR 1902V PARTS REF No D701 D704 T602 L602 C706 R622 R722 R612 R719 R619 R523 R524 R617 C618 C603 C633 C604 D607 D608 R643 R723 R641 R642 C618 C729 R640 R713 801 803 8519 R721 R729 R627 R706 R708 KGR 1901V PARTS No NONE 50 RAD P 1105 61 TB3P 8S 14 VRB R 1137 NONE NONE NONE NONE 79 STAND PRO 1005 82 SO 1190 001 41 LABEL 1861 10 SCHEME DIA 1287 08 COIL ADG 1017A NONE 47 LAY OUT 1046 55 PACK CASE 1724 73 TRNS FB 3008 30 COIL H SIZE 1012 23 20L 470Y 44 1PHU 561J H 81 2PHU 560J H 46 2PHU 182J H 75 2PHU 682J H 38 1 4P 331J 48 1PHU 822J H 10 LUG 032A NONE 01 PFC 40 394J 30 ML 5 104J 15 ML 5 475J NONE 62 DSL 5 828J AU NONE NONE NONE NONE NONE NONE NONE 29 1 4P 124G AU 48 PLUG 025A 51 1 2P 153J AU NONE 2
31. Service Manual 19 R G B COLOR MONITOR CHASSIS NO CG 19A MODELS KGR 1901H KGR 1901V CHASSIS NO CG 19B MODELS KGR 1902H KGR 1902V KGR 1902HA KGR 1902VA CHASSIS NO CG 19C MODELS KGR 1903H KGR 1903V SAMPO CORPORATION OF AMERICA TABLE OF CONTENTS DESCRIPTION PAGE MECHANIC 6 2 WARNING 3 4 5 68 4 4 24 24 4 2222 224 24 422 5 ADJUSTABLE 8 6 REPLACEMENT OF MAJOR 5 7 SERVICE SET UP 8 10 LAYOUT FOR 1901 11 LAYOUT FOR 1902 12 LAYOUT 1908 2 13 PCB COMPONENT LAYOUT ccc cece cece 14 H CENTER CONTROL 14 MAIN COMPONENT 15 16 PARTS 5 2224 24 2 11 23 SCHEMATIC
32. c8049agi 56 J pute RB26 Lo 390 680 m 10 osos 0802 58805 557 Pav 2 2 8823 58829 GREEN e 68 2 2K 15 mie 8808 8059817 56K e 1K 8827 0803 R621 6554 80 6 92v 1 8824 48830 BLUE 2 2K 215 rt a 144146 Home 0804 Mi SYNC 0807 ik gt R832 VERT 22k C809 2 638 0807 2SC1815 Y m 0809 25 1015 0 osc i 8835 7841 843 SC 43 HORIZ 55 IK 15 zisio 1719 20702 1 R833 7 0805 02V Pos SYNC 1 2 2 C808 ceio 25 0706 1 K 10 9839 1 16 giis 164 T 5 6K 28845 VERI A 0808 g 0808 zscieisiy 3 3K 18V 0519 2541015 0 11390 41015 CO m 0702 707 R70 1000 so CEND 070 2SC9430R INVERTOR 0702 2569450 ERROR AMP 8715 0703 2SA733R 820 PULSE SHAPER 66 396 CROSS HAI peak to peak applies 2 Negative sync signa peak applied at l2 CIO 120 60 7 a E IATIC DIAGRAM 1ASSIS NO CG 19A CRITICAL COMPONENT WARNING NOTE IHESE CRITICAL COMPONENTS THAT ARE SHADED ON 2 lt THE SCHEMATIC DIAGRAM AND ASTERISKED ON THE he unit of resistance ohm is omitted 1000 ohms M PARTS LIST ARE USED TO PREVENT SHOCK FIRE 7 HAZARD AND EXCESSIVE X RADIATION ALL THESE 2 All resistors are 1 4 watt unless otherwise noted SPECIAL COMPONENTS MUST BE REPLA
33. e rear of picture tube 2 Unplug the 5 pin connector on the Deflection Coil 3 Using a 7 16 inch phillips head torque wrench remove the four screws that hold the picture tube in the steel frame Carefully remove the tube by pulling it out toward the front 4 IMPORTANT Note that after replacing a picture tube you will have to re converge the picture and readjust the grey level tracking These adjustment procedures are covered in service set up procedure of this manual B YOKE REPLACEMENT 1 Discharge the high voltage from the tube Unplug the neck board at rear of picture tube 2 With a 1 4 inch phillips head torque wrench and your fingers loosen the screws that tighten the two neck clamps around the picture tube neck 3 Now slide the magnet assembly then the yoke assembly off the end of the picture tube 4 IMPORTANT Note that after replacing a yoke you will have to re converge the picture This adjustment procedure is covered in service set up procedure C POWER TRANSISTOR REPLACEMENT When replacing any of the power transistors observe the following precautions 1 Hold the insulated transistor socket in its proper location It is not or mounted onto the metal chassis instead the transistor s mounting screws secure the socket 2 Apply silicone grease evenly to both sides of the mica insulator when replacing an output transistor 3 Make sure that the transistor mounting screws are tight before apply
34. ectifier D607 76 SD IN4148 AU D701 D704 07 SD i S1887 AU Power Rectifier D705 57 RECT SI 1021 AU Damper C501 D706 64 RECT SI 1001 AU Protector C502 0801 0807 76 SD IN4148 AU 0503 76 SD IN4148 AU C503 C606 0708 0709 59 SD 181887 positive coef thermister C504 D607 608 49 RECT SI 154 H center C505 C506 ZENER DIODES AND OTHER PARTS C507 C508 C509 ZD601 32 SZ HZ20 04 AU 20V 0 5W C510 ZD701 58 SZ RD6 2EB3 6 2 0 5W CG 19A CG 19B CG 19C PART NO 03 43 SZ RD12bB AU 50 0020 28 28 14 1004 BEAD CORE 1004 VRB R 1137 COILS 23 30 14 75 COIL H LINE 1006 COIL H SIZE 1012 COIL FIL 1019 PLKA 680K TRANSFORMER TRNS DRIVE 1016 TRNS FB 3008 TRNS DRIVE 1016 CHOKE RF 1013 48 73 48 67 CONTROLS VR SF 1019 VR SF 1198 VR SF 1198 VR SF 452 VR SF 1049A 85 VR SF 453 14 VR SF 452 86 VR SF 1019 23 VR R 1012 86 VR SF 1019 86 12 12 14 36 CAPACITORS 13 CU 1 6 471Y 02 ML 5 225K 29 85 CU 5 103H AU ML 5 105K 09 DTLL 3 5 103K 47 KU 5 102K 77 32 65 05 CU 6 3 102Y CU 10 222Y CU 16 101Y MLO 5 225J DESCRIPTION 12V 400mw Positive Coef Thermistor ADG Harmonic Filter Harmonic Filter Focus amp Screen Horiz Linearity Width Size Line Filter Shunt Peaking 68H Horiz Driver Horiz Output Power Driver HF Choker V HOLD 10KB V SIZE 100 2 V Linear 100 9 H HOLD 5KB 1KB 300 2B 5K V center 10K H center 300 ohm H PH
35. ights should be favoured HA 11423 6 0 Circuit diagram and Description of High Voltage Hold Down or Safety Circuit a Circuit Diagram in Fig 9 b The high voltage hold down circuit is used to mal function the horizontal oscillation circuit and cut off high voltage if the HV at 1100 A beam current in cluding CRT beam current and focus current reaches between 28 5KV and 30 5KV serviceman should check if the hold down circuit acts in the specified voltage range as follows Receive cross hatch pattern 2 Connect the HV meter HV Range 40KV to CRT Anode 3 Connect a voltmeter across R626 i e between TP601 and TP602 4 Parallel a 20K ohms variable resistor with TP701 R707 5 Rotate SCREEN VR fully clockwise i e beam current is maximun Turn on the set with power input voltage 120V AC Adjust 20K ohms variable slowly increase B with the voltage across R626 keeping at 1 1V 1100 by rotating SCREEN control until the HV suddenly comes down to zero record this hold down HV 8 Check the hold down H V if it is between 28 5KV and 30 5KV ZD601 20V Figure 9 10 LAYOUT FOR KGR 1901 N33u5s 51904 H3IN H3IN32 718 1 AIBN3SSV 189 1031 4281 018 149 9094 60584 7254 SIS A AZIS A D Q 7020 LOLY 020 q 2049 11 LAYOUT FOR KGR 1902 N33
36. ing power to the monitor This insures proper cooling and electrical connections Use a Phillips torque wrench and torque the mounting screws 7 to 10 inch lbs NO MORE Excessive pressure will strip the threads causing a poor electrical and mechanical connection SERVICE SET UP PROCEDURE NOTE All monitors are equipped with automatic degaussing coils which effectively demagnetize the picture tube each time the monitor is turned on The degaussing coils will operate any time the set is turned on after having been off for at least five minutes The degaussing effect is confined to the picture tube since the coils are mounted on the ferrous tube shield Should any part of the chassis or cabinet become magnetized it will be necessary to degauss the affected area by means of a manual degaussing coil Move the coil slowly around the CRT face area then slowly withdraw for a distance of six feet before disconnecting the coil from the AC power supply Normally little if any adjustment should be necessary However when a picture tube yoke or similar component is replaced YOKE CLAMP SCREW preliminary static convergence should be done before attempting LOOKING RING purity adjustment and so on 4 POLE CONVERGENCE MAGNETS Set up should be done in a north south direction Horizontal and vertical centering taps should be set to the centre position if a major component has been changed 10 Purity 1 1 Loosen yoke retaining clamp SCEREW Fig 2 rem
37. ion circuit and off high voltage if the HV at 1100 uA beam current including CRT beam current and focus current reaches between 28 5 KV and 30 5 KV Serviceman should check if the hold down circuit acts in the specified voltage range as follows Connect the HV meter HV range 40K V to CRT anode Connect a voltmeter across R626 ie between TP601 amp TP602 Parallel a LOOK ohms variable resistor with R706 Rotate screen control fully clockwise ie beam current is maximum Turn on the set with power input voltage 120V AC Adjust the external VR to slowly increase B with the voltage across R626 keeping at 1 1V it means the beam current is 1100 by rotating screen control until the HV suddenly comes down to zero 7 Check the hoid down If it is less than 28 5KV turn off the set and remove R619 330 ohms then repeat steps 6 and 7 to make sure the hold down HV is in the specified range 8 If tne hoi down is higher than 30 5 turn off the set and replace R619 with a higher resistance Pb ew h 27 than 220 gt REPLACEMENT OF MAJOR ASSEMBLIES Tools required to replace all assemblies Covered in This Chapter 7 16 inch hex socket wrenches and a Phillips head torque wrench A PICTURE TUBE REPLACEMENT Discharge the high voltage from the tube Remove the large high voltage connector anode wire near the top of the picture tube Unplug the neck board at th
38. ls E OPERATING TEMPERATURES AND Ambient temperature 0 to 55 C 32 to 131 F Impedence SK nom 5K nom 5 nom 35K nom 35K nom SK nom 5K nom HUMIDITY Signal Range 4V 0 to 4 0 to 4V 2V to 2V to 2V to 2V to 4V 4V 4V 4V ADJUSTABLE CONTROLS Remember to observe the precautions regarding high voltages when you make adjustments on this monitor To make the following adjustments keep the game in the attract or play mode Note that before you adjust the brightness the monitor should be turned on for at least 5 minutes A FOCUS This control changes the sharpness of the screen image Turn this control until you get the optimum screen sharpness possible B SET UP CONTROLS Adjust R707 for 110V DC Vertical Linearity R522 Vertical hold control R503 Horizontal Frequency control R608 Vertical Height control R515 Vertical centering tabs 3 positions Horizontal centering tabs 3 positions CRT bias controls See fig 3 Red bias R873 Green bias R872 Blue bias R874 9 Video drive controls See fig 3 Red drive R867 Blue drive R868 10 Horizontal width coil 1 602 11 Focus control F601 12 Screen Control See P 9 3 2 t G C HIGH VOLTAGE HOLD DOWN CIRCUIT ADJUSTMENT HIGH VOLTAGE HOLD DOWN CIRCUIT ADJUSTMENT WARNING Ihe high voltage hold down circuit is used to malfunction the horizontal oscillat
39. nd left right to GREEN BLUE Lines In Fig 8 converge RED When converence of 3 colors is optimized apply stripe of paint to converence magnet rings to prevent movement If applicable tighten locking ring carefully Tit yoke in up down and left right direction for best circumference convergence and install 3 wedges 3 7 11 clock direction Simply pull off tape slide wedge in place and press outer flap down firmly For more permanency apply small quantity of silastic or similar material at junction of wedges and picture tube Do not disturb while material is setting White Balance Grey Scale Tracking Refer to figure 3 Do the following in subdued light Note this adjustment can be accomplished with no signal connected eg input connector open or if a signal generator is connected switch off al inputs at signal of the generator Set red and blue drive controls to their mechanical center and turn the common screen control and 3 Bias controls to minimum fully counterclockwise then rotate screen con trol clockwise until a dim raster of one pronounced color RED GREEN BLUE is obtained Slowly turn up the other two color Bias controls in turn to white color Slowly turn screen counterclockwise until appear the faintest grey screen cut off point Turn on the signal generator with all inputs on a crosshatch pattern would be appropriate Adjust the red and blue drive controls for neutral white on
40. oke can tly 6 feet or more from the implosion Use care when replacing any monitor B SAFETY MEASURES Develop good safety habits so when you re rushed with repair work you ll still automatically take precautions A good practice when working on any monitor is to first ground the chassis and USE ONLY ONE HAND when testing circuitry This will avoid the possibility of carelessly putting one hand on the chassis or ground and the other on an electrical connection DOING SO COULD CAUSE A SEVERE ELECTRICAL SHOCK To prevent fire or shock hazard NEVER EXPOSE THIS MONITOR TO RAIN OR MOISTURE Also check periodically for frayed insulation on wires If you need to service the monitor observe the original lead dress routing and length of harness wires Use extra precaution in the high voltage circuitry area of the monitor Whenever a short circuit occurs replace those components that indicate they have overheated PICTURE TUBE HANDLING Use extreme care when handling the picture tube since rough handling may cause it to implode due to a vacuum inside Do not nick or scratch the glass or subject it to any undue pressure when removing or installing it Wear safety goggles and heavy gloves for protection when handling the picture tube Keep others without safety goggles away Never lift the tube by its neck Discharge the high voltage in the picture tube by shorting the anode connection to chassis ground NOT THE CABINET OR OTHER MOUNTI
41. ove FRONT PURITY MAGNETS adhesive material fixing wedges to CRT Remove wedges REAR 6 POLE CONVERGENCE MAGNETS completely and clean off dried adhesive from picture tube and wedges Figure 2 12 Lossenlooking ring and remove wedges 13 Connect appropriate signal source eg LEADER LCG 396 CRT SOCKET P C B generator producting a raster field 1 4 Turn off the green field and adjust setup controls to ri RED BIAS produce a magenta field See Fig 3 RED puve GREEN BIAS 1 5 Pull the deflection yoke back so that a magenta band siue orive P BLUE BIAS appears in the centre of the screen 16 Spread the tabs apart as little as necessary and rotate both rings together to center the magenta band horizontally on the face of the CRT approximate See Fig 4 Figure 3 1 7 Slide the yoke towards the bell of the picture tube slowly to obtain a uniform magenta field pure in Fig 5 color across the entire tube face Juggle back and forth slightly as necessary Lightly tighten yoke retaining clamp FRONT VIEW 1 8 Momentarily switch on a cross hatch signal and rotate yoke to level the pattern on the face of CRT 1 9 Return generator to regain magenta 1 10 Turn off red and blue fields and check for pure field for the green and blue field Reposition yoke if necessary to obtain optimum purity on all fields CENTRE 1 11 Tighten yoke retaining clamp to prevent yoke shift or BRING THE MAGENTA BAND TO THE CENTRE Figure 4
42. rotation Do not install wedges at this time 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2 3 3 3 4 3 5 3 6 Static and Dynamic Convergence NOTE Static convergence is achieved by four magnets located on the neck nearest the base of the picture tube Fig 2 The front pair of magnetic rings are adjusted to converge the blue and red crosshatch lines The middle pair of convergence rings closest to the base of the picture tube are adjusted to converge the magenta to the green crosshatch lines Dynamic convergence is achieved by tilting the deflection yoke up down and left right Ensure that the controls misadjusted during purity setup screen cut off etc are set to give white balance See 3 0 below Assume half position of the RED DRIVE AND BLUE DRIVE controls Switch generator to the crosshatch pattern Turn off green input and turn on the red and blue input Rotate the 4 pole front pair of magnets as a unit to minimize separation of the red and blue crosshatch lines around the center of the screen Fig 6 Variation of the angle between the tabs adjusts convergence of red and blue Rotate the 6 pole middle pair of magnets as a unit to minimize separation of the magenta and green lines Fig 7 Vary angle between the two tabs and further rotate as a unit to finalize Adjust convergence around the edges of the picture tube by tilting the yoke up down a

Service Manual - International Arcade Museum

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