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Neotec NT-1438, Service Manual

The Neotec NT-1438 Service Manual is essential for troubleshooting and maintaining your device. Easily download the manual for free from our website to access detailed instructions and diagrams. Keep your Neotec NT-1438 running smoothly with the help of this comprehensive manual.

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SERVICE MANUAL 

19” VGA 

S-VGA MONITOR 

MODEL: NT-431HR / NT-1438 

                     NT-93lHR / NT-1938 

,/’ 

NEOTEC GRAPHIC INTERNATIONAL INC.

2721 NORTH T O W N E

AVENUE, POMONA, 

CA 

91767 

TEL:  (909) 626-9889  FAX:  (909) 626-0990 

Summary of Contents for NT-1438

Page 1: ...SERVICE MANUAL 14 19 VGA S VGA MONITOR MODEL NT 431HR NT 1438 NT 93lHR NT 1938 NEOTEC GRAPHICINTERNATIONAL INC 2721 NORTH T O W N E AVENUE POMONA CA 91767 TEL 909 626 9889 FAX 909 626 0990...

Page 2: ......

Page 3: ......

Page 4: ...ated characteristics These are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for high voltage wattage e...

Page 5: ...H 1 V50 90Hz LINEARITY 10 MAX 1024 X 768 INTERLACED 65MHz 3db at 30 Vpp H30 39KHz V50 90Hz LINEARIlY 10 MAX 1024 X 768 INTERLACED 65MHz 3db at 30 Vpp 90 264VAG 47 63HZ UNIVERSAL 85 w 85 w EPNDPMS COMP...

Page 6: ...htness FINAL ALIGNMENT 2 1 Bias Adjustment White Balance a Input 31 5KHz 640 x 480 Backgroundpattern Turn Brightness Contrast VR to the maximum Turn counter clockwise of VR905 VR906 VR907 on CRT Board...

Page 7: ...ong with Tapping test Input 31 5KHz 640 x 480 Background patter Adjust 4 FINAL ALIGNMENT 3 1 Sub Brightness Adjustment Adjust VR406 Sub Bright to the center point Focus Adjustment darker Adjust Focus...

Page 8: ...ii u I I I I c w m 0 2 5S J 0 c L i I I 7 V w h 0 w z...

Page 9: ...8...

Page 10: ......

Page 11: ...L l I u n i OM q NEOTEC CRT k WOE0 CIRCUIT BOARD w a r n car l u I U I u I I 1 1 1 1 I I I I111 I I...

Page 12: ...11...

Page 13: ......

Page 14: ...AMPLIFIER AMPLIFIER AFC X RAY PROTECTION v IN VERTICAL DEFLECTION AMPLIFIER 1 I i T V SIZE CONTROL V CENTER CONTROL PARABOLA GENERATOR CONTROL CONTROL I 1 ws HORIZONTAL VERTICAL DEFLECTJON BLOCK DJAG...

Page 15: ...14...

Page 16: ...L 3...

Page 17: ...16...

Page 18: ...MPER WIRE JUMPER WIRE ITEM SPEC 0 6D 5MIM 0 6D 5MIM 0 6D 5MIM 06D 5MIM 0 6D 5MIM 0 6D 7 5MIM 0 6D 5MIM 06D 10MIM 0 6D 7 5MIM OBD 15MIM 06D 7 5MIM 0 6D 7 5MIM 06D 7 5MIM 0 6D 7 5MIM 0 6D 12 5MIM 06D 7...

Page 19: ...M 0 6D 7 5MIM 0 6D 15MIM 0 6D 7 5MIM 0 6D 7 5MIM 0 6D 10MIM 0 6D 7 5MIM 0 6D 7 5MIM 0 6D 7 5MIM 0 6D 7 5MIM 0 6D 10MIM 0 6D 10MIM 0 6D 10MIM 0 6D 7 5MIM 0 6D 7 5MIM 0 6D 12 5MIM 0 6D 7 5MIM 0 6D 7 5MI...

Page 20: ...118PY56KJT RD112PY270HJT RD1 2PY3R3HJT RD118PY2RZKJT RD118PY120HJT RD118PY1R2KJT RD112PYR82HJT RD118PY4R7KJT RD112PYlHJT RS2PB56HJK RDIBPY1OHJT RD118PYlKJT RD118PY3R3KJT RD118PYlKJT RD112PY390HJT RD11...

Page 21: ...D112PY470HJT RD112PY4R7HJT RD118PY1OKJT RD118PYlKJT RD112PY330HJT RD118PY1OOHJT RD118PY18KJT RD118PYlMJT RS3PB27KJK RW5PT1R2KJA RD118PY3R3HJT RD118PY220HJT RD118PY47KJT RD118PY47KJT RD118PY2R2KJT RD11...

Page 22: ...JT RDlBPY3R3KJT RD118PY3R3KJT RD118PY3R3KJT RD1 8PY130KJT RD118PY2RZKJT RD118PYlOKJT RD118PY20KJT RD118PY9RlKJT RD118PY5RlKJT RD118PY5RGKJT RDlI8PY8RZKJT RD118PY330KJT RDlBPY27KJT RDlBPYJT27K RDl18PYl...

Page 23: ...T CQ92M1H103KT CE04B1R102MT CK45B1H104ZT CE04B1HOlOMT CQ92MlH222KT CQ92M2A152KT CE04B1C471MT CE04BlC100MT CE04B1C101MT CQ92M2A222KT CQ93P2A222KT CK45B1H104ZT CE04B1C101MT CQ92M1HI03KT CEO4B1E222MT CE0...

Page 24: ...1H103KT CK45B3A102KT CE04B1H1OOMT CE04BIH1OOMT CE04B1H1OOMT CN04B1C100MT NP CQ92M1H103KT CE04B1H1OOMT CE04BlH IOOMT CE04B1H1OOMT CA45B2G472MA AC CA45B2G472MA AC CE04B2G221MT CE04B1E470MT CQ92M1H222JT...

Page 25: ...DIODE ZENER DIODE SI DIODE SI DIODE SI DIODE ZENER DIODE BRIDGE DIODE SI DIODE SI DIODE SI ITEMSPEC RVGPBPBlOK RVGPBPBlOK RVGPBPBIOK 180UH DI 16x18 8515 El19 ER39 96697 K6R8JT K6R8JT K6R8JT 4 OUH 4 OU...

Page 26: ...ISTOR TRANSISTOR HEAT SINK SCREW TAPPING TRANSISTOR TRANSISTOR ITEMSPEC FR107 HER305 HER103 HER305 HER306 IN4148 FR107 HER208 IN4148 1N4148 FR102 1N4148 IN4148 1N4148 1N4148 1N4148 1N4148 1N4148 1N414...

Page 27: ...BL042X50H PHWM3 24X8TP B 2SA733 2SC945 BD I39 2SC945 2SA733 FS7KM 16A WS DMF317X80H PHWM3 24X8TP B 2SC1213 3 5MHZ LM7812 WS BLO42 X 35H PHWM3 24X8TP B LM7805 74LS123 LM1391 TDA1675 KS3842A LM3080N KS...

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