Neotec NT-3500 Service Manual Download | Manualshive

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Summary of Contents for NT-3500

Page 1: ...SERVICE MANUAL 38999 39 CGA EGA VGA COLOR MONITOR MODEL NT 3500 NT 3501 NT 3602 NEOTEC GRAPHIC INTERNATIONAL INC 2721 NORTH TOWNE AVENUE POMONA CA 91767 TEL 909 626 9889 FAX 909 626 0990 ...

Page 2: ...circuit diagram should not be replaced by other manufacturr s Furthermore where a short circuit has occurred replaced those components that indicate evidence of overheating 5 Before returning a serviced monitor 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 de...

Page 3: ...ial safety related 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 etc Replacement parts that have these special safety characteristics are identified in this Service Manual Electrical components having such feature are identified by marking with on the ...

Page 4: ...80 FREQUENCY 15 75 I liz 25 Khz 31 5 Khz POWER SUPPLY 120 220 VAC 120 220 VAC 120 220 VAC 50 60Hz 50 60Hz 50 60Hz POWER CONSUMPTION 90W 115W 120W CONTROLS BRIGHTNESS CONTRAST H POSITION V SIZE V POSITION V HOLD PINCUSHION SIGNAL CONNECTOR NT 3500 PIN 1 RED PIN 2 GREEN PIN 3 BLUE PIN 4 GROUND PIN 5 N C PIN 6 SYNC NT 3501 PIN 1 RED PIN 2 GREEN PIN 3 BLUE PIN 4 SYNC PIN 5 GROUND PIN 6 N C NT 3602 15 ...

Page 5: ...BUFFER I I OUTPUT DRIVER BUFFER CONTS BRIGHT V 19 IC 401 LA 7850 2 IC 301 11 8 12 3 LA 7836 _6 PIN V POSI H PHASE H HOLD V SIZE V LIN H POSI H FREQ 4 1 G3 T402 G2 H DRIVER H OUTPUT 9 165 4 12V 5 EMI SWITCHING FILTER DRIVER CONVERTER 125V AC 120V T TRANSFORMER 26V 220V Osc I B ADJ I 4 ...

Page 6: ...nal Generator Set it to the crosshatch pattern video signal 5 2 3 Adjust the Ru 11 to set the horizontal deflection B the connection point of D106 tolOO 00 0 50 VDC 5 2 4 Check all the other output DC voltages or AC wave to meet the following specs 1 The connection point ofDlO9 140V 2 OVDC 2 The connection point of D107 26 5V 1 OVDC 3 The connection point of R130 12 OV 0 5 DC 4 The connection poin...

Page 7: ...the compatible Signal Generator video signal to a 350 line crosshatch pattern video signal NT 3 602 480 LINE 5 6 2 Adjust R5 15 Pin Ad to modify the left right side pincushion distortion to meet the specs of 1 00mm 0 25mm 5 7 BACKGROUND BRIGHTNESS SETTING 5 7 1 Change the compatible Signal Generator video signal to a 350 line blank pattern video signal Set the Brightness VR R602 to the maximum pos...

Page 8: ... the compatible Signal Generator video signal to a 350 line full white crosshatch pattern video signal NT 3 602 480 LINE 5 10 3 Adjust the Focus VR to get an optimized focus for the total screen 5 11 MISCONVERGENCESETflNG 5 11 1 Change the compatible Signal Generator video signal to a 350 line crosshatch pattern NT 3602 480 LINE 5 11 2 Open the knobs of the two 4 pole magnets and make the blue and...

Page 9: ...IRA le le r r ir I iiiIFTTTL rr vj ...

Page 10: ...7 C fm cu U I eu ar 0 11 Ile cd cu pJ ka ccvu 4m cu M 4 r6 1L LRrj IJrj It o co f mf _______ CY I I cu clu I I LI I TT I S S S w A rn T HF so PC 2 ru I 1 uIij 1 Ifl 4 It 0 H 8 11403 is AZT S d Y13 S H 5 ...

Page 11: ...i r L 4 u c 1I I I I Loa 0 I ma z I N va ON IOU FADS 0 LL H Ln N LP N Z 10 ...

Page 12: ...0 0 j 0 h 2 a i 5 7771 L __ __ t 11 ...

Page 13: ...r i i q r r j je i l l Z T q hk q Ls 0 O AA IN 0 1 eel oil 4 oJo o o 11W 00 rim u1ri I Ll L J 12 ...

Page 14: ...920 R942 R948 T 2 R941 C90 L902 i J G2 1 C917 I I I 902 l1 II 4i 11911 14 41 C911 C910 C908 C907 I 0907 __ R945 J901C9 9 _ J_ J B 1C923 1 J902 I I 02 T C912 C901 U fo T R90 R9041 P905 R912 I R907 R955 __ J900 __ R9 Do GND 904R 2 Z fljjR9fj L90 7 R905 I I IR910 C957 P 90L R950 c96o 1 J R95 I 1 11 C951 L 0 1 1 HB 0NG1 I2VSCL_H_vC958VHE EBEGR r T IT NT 9710 L905 ____________ T P903 P902 P901 13 ...

Page 15: ... V R H E I CON AST JR303 JR504 V HOLD 0 P c V SIZE BRIGHT FULL FAMILY 02 VO A I28 CFIl i i cria VAi 1 k i E Vvv HI If2T TPI 17 7 I L __ H L JrI one ol V4T mw H 3 S P xx 0 cc R9 C3 ç 0 RS E UA2 c12Q 1 3 D 4_O DP 2001 0 R3 EU ki 1øR8 UR1 FULL FAMILY 02 VOA 14 ...

Page 16: ...1 4W 30K R406 25 109433390 RESISTOR CF 1 4W 33K 2 R410 R324 26 109439390 RESISTOR CF 1 4W 39K 3 R310 RS06IR520 27 109447390 RESISTOR CF 1 4W47K 3 R407 R408 28 109468390 RESISTOR CF 1 4W 68K 1 R307 29 109410490 RESISTOR CF 1 4W lOOK 5 R391 R512 R514 R608 R609 30 109412490 RESISTOR CF 1 4W120K I JR304 31 109418490 RESISTOR CF 1 4W 180K 2 R302 R511 32 109413390 RESISTOR CF 1 4W 13K 1 R535 33 10941089...

Page 17: ...2683529 CAPACITOR 3J 1 00V 1 C302 79 221222529 CAPACITOR 2J 1 00V 2 C402 C409 80 221682529 CAPACITOR 2J IOOV 1 C405 81 221103529 CAPACITOR I 3J IOOV I C408 82 222224529 CAPACITOR 224J IOOV 2 C107 C315 83 231271560 CAPACITOR 271J IKV 1 C109 84 231122829 CAPACITOR 122G IOOV 1 C410 85 231272829 CAPACITOR 272G IOOV 1 C108 86 231273550 CAPACITOR 273J 630V 1 C421 87 234332560 CAPACITOR 332J11KV 1 C105 8...

Page 18: ... 970302 1 TIOl 131 340004550 TRANSFORMER MRCFT 455 I T402 132 197730200 VARIABLE RESISTOR VZO67TLI B3K I Rill 133 197750200 VARIABLE RESISTOR VZ067TLI B5K 3 R414 4515 R404 134 197710300 VARIABLE RESISTOR VZ067TLI BIOK 2 R313 R429 135 197750300 VARIABLE RESISTOR VZ067TLI B50K I 315 136 430230300 SILICON INSULATOR T03P3 I RFPE50 137 511006731 TRANSISTOR A673 4 02 Q303 Q304 Q601 138 510012131 TRANSIS...

Page 19: ...5 PC VR 173 620423010 SCREW TBV3XIO 3 174 610324010 SCREW TP24XI0 2 4X12 I FBT 175 718200050 UC 0 5 2 176 JUMPER 46 J101 J146J150 177 JUMPER 15MM 1 J3 178 861001000 CONNECTOR ASSY ULI007 22 1000MM 9P 1 P301 179 860201000 CONNECTOR ASS Y UL1185 22 1000MM 2P P402 180 860401150 CONNECTOR ASSY UL1007 22 1150MM4P P601 181 860700351 CONNECTOR ASSY ULI007 22 350MM 7P 1 P602 182 860600350 CONNECTOR ASSY U...

Page 20: ...937 R938 19 250221509 CERAMIC CAPACITOR 221J 50V 4 C913 C918 C919 C958 20 250103609 CERAMIC CAPACITOR 103K 50V 3 C954 C955 C956 21 250104309 CERAMIC CAPACITOR 104Z 50V 11 C902 C907 C908 C909 C910 C911 C912 C914 C951 C953 C959 22 250102650 CERAMIC CAPACITOR 102K 2KV I C922 23 250472630 CERAMIC CAPACITOR 472K 500V I C923 24 250103630 CERAMIC CAPACITOR 103K 500V I C960 25 200106749 EC CAPACITOR I OUF...

Page 21: ... VZ067TLI B20K 4 VRO1 RVRO2 VRO3 VRO4 18 507041481 DIODE 1N4148 2 DF03 DF05 19 506000263 FAST RECOVERY DIODE BYV26G 4 DF02DF0I DFO4 DFO7 20 501030322 ZENER DIODE HZ3C2 1 ZD1 21 250151609 CERAMIC CAPACITOR 151K150V 1 CF02 22 250104309 CERAMIC CAPACITOR 104Z150V 2 CF05 CF18 23 250103350 CERAMIC CAPACITOR I03ZI2KV 4 CF09 CF10 CF11 CF2 24 221103509 CAPACITOR 103J 50V I CF03 25 271224519 CAPACITOR 224J...

Page 22: ...800 PBP XH02 2 5MM 2P 1 P400 6 400202504 WAFER 1800 PBP XH02 2 5MM 4P 1 P600 7 400202510 WAFER 1800 PBP XHI0 2 5MM lop i P300 8 198020200 VARIABLE RESISTOR VZ084SLI B2K I R405 9 198010300 VARIABLE RESISTOR VZ084SL1 BIOK 3 R321 R504 R613 10 197450300 VARIABLE RESISTOR VZO84SLI B50K 2 R309 R503 Ii 197420400 VARIABLE RESISTOR VZO84SLI B200K 2 R602 R303 12 411197090 PC BOARD NT 9709 I ICEM1 13 7151000...

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