Related Manuals for Neotec NT-431HR
Summary of Contents for Neotec NT-431HR
- Page 1 SERVICE MANUAL 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...
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Page 4: Product Safety Notice
impedance high voltage meter. (SENSITIVE RESEARCH MODEL: ESH or Equivalent). Connect (-)to chassis earth and (+)to the CRT anode button. NOTE: Make sure to turn power switch off before making the connection to the Anode Button. X-RADIATION TUBE: The primary source of X-radiation in this monitor is the picture tube. The tube utilized in this chassis is specially constructed to limited X-radiation emissions. -
Page 5: Signal Connector
MODEL NT-431 HR11438 SIGNAL INPUT 0 7Vpp, 75 OHM, POSITIVE ANALOG 0 7Vpp, 75 OHM, POSITIVE SYNC SEPARATE, i T L LEVEL H8V SYNC, 3 4Vpp+/- SEPARATE, l T L LEVEL HBV SYNC, 3 4Vppii- GENERAL SCAN FREQUENCY 10% MAX) RESOLUTION 1024 X 768 (INTERLACED) 1024 X 768 (INTERLACED) -
Page 6: Final Alignment
FINAL ALIGNMENT B+l Voltage Adjustment: Input 31.5KHz (640 x 480) Crosshatch pattern. Adjust VR601 (B+1 ADJ) to make the pattern of the wave from the negative point of D606 be 24V. B+2 Voltage Adjustment: Adjust VR403 (B+2 ADJ) to make the pattern of the wave from the negative point of D401 be 108 +/- 0.5VDC. - Page 7 Turn VR903, VR904 to the center point. The color temperature should be 80 - 90FL, 281 +/- 20Fi, y 311 +/- 20FL Input 3 1.5KHz (640 x 480) full white pattern. Contrast VR to the maximum. The color temperature Turn Brightness should be 281 +/- 20FL, y 3 11 +/- 20FL...
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- Page 11 NEOTEC CRT k WOE0 CIRCUIT...
- Page 14 PRE-AMPLIFIER AMPLIFIER X-RAY PROTECTION PARABOLA VERTICAL DEFLECTION AMPLIFIER GENERATOR CONTROL CONTROL V. CENTER V. SIZE CONTROL CONTROL HORIZONTAL VERTICAL DEFLECTJON BLOCK DJAGRAM...
- Page 18 ASSEMBLY NAME: MAIN PWB ASSY NO. LOCATION ITEM NAME SPEC ITEM PART NUMBER 0010 JUMPER WIRE 83206005000 0020 JUMPER WIRE 83206005000 0030 J003 JUMPER WIRE 83206005000 0040 J004 JUMPER WIRE 83206005000 0050 J005 JUMPER WIRE 83206005000 J006 0060 JUMPER WIRE 83206007500 0070 J007...
- Page 19 ASSEMBLY NAME: MAIN PWB ASSY NO. LOCATION ITEM NAME ITEM SPEC PART NUMBER 0520 J052 JUMPER WIRE 83206007500 0530 J053 JUMPER WIRE 83206007500 0540 J054 JUMPER WIRE 83206015000 0550 J055 JUMPER WIRE 83206007500 0560 J056 JUMPER WIRE 83206007500 0570 J057 JUMPER WIRE 83206010000 J058...
- Page 20 ASSEMBLY NAME: MAIN PWB ASSY NO. LOCATION ITEM NAME ITEM SPEC PART NUMBER 1030 R303 RES. CARBON 1040 R304 RES. CARBON R308 RES. CARBON 1050 1060 R309 RES. CARBON 1070 R310 RES. CARBON R311 RES. CARBON RD 118PY 120HJT RDEPY 120H JT R312 1090 RES.
- Page 21 ASSEMBLY NAME: MAIN PWB ASSY NO. LOCATION ITEM NAME ITEM SPEC PART NUMBER 1540 R430 RES. METALOXIDE 1550 R431 RES. CARBON 1560 R432 RES. CARBON 1570 R433 RES. CARBON 1580 R434 RES. CARBON 1590 R435 RES. CARBON 1600 R437 RES. CARBON 1610 R438 RES.
- Page 22 ASSEMBLY NAME: MAIN PWB ASSY NO. LOCATION ITEM NAME ITEM SPEC PART NUMBER 2050 R703 RES. CARBON RDEPY 1 OOHJT 2060 R704 RES. CARBON 2070 R705 RES. CARBON 2080 R706 RES. CARBON 2090 R707 RES. CARBON 2100 R708 RES. CARBON 2110 R709 RES.
- Page 23 ASSEMBLY NAME: MAIN PWB ASSY NO. LOCATION ITEM NAME ITEM SPEC PART NUMBER 2560 CAP. ELEC 2570 CAP. ELEC C E4B 1 H 1 OOMT c112 2580 CAP. ELEC 2590 C113 CAP. CERAMIC C K5B 1 H 1 04ZT 2600 c201 CAP.
- Page 24 ASSEMBLY NAME: MAIN PWB ASSY NO. LOCATION ITEM NAME ITEM SPEC PART NUMBER 3070 C423 CAP M.P. 3080 C424 CAP. PP 3090 C425 CAP. PP 3100 C426 CAP. MYLAR 31 10 C427 CAP. CERAMIC 3120 C501 CAP. ELEC 3130 C502 CAP.
- Page 25 P W B ASSEMBLY NAME: MAIN ASSY NO. LOCATION ITEM NAME ITEM SPEC PART NUMBER 3580 VER SEMI FIX 3590 VER SEMI FIX 3600 VER SEMI FIX 361 0 T401 COIL CHOKE 351 11000070 3620 8515 35003330050 T403 3630 T501 TRANS, H-DRIVE 35011410020 3640...
- Page 26 ASSEMBLY NAME: MAIN PWB ASSY PART NUMBER NO. LOCATION ITEM NAME ITEM SPEC 4080 DIODE SI FR107 4090 DIODE SI HER305 4100 D607 DIODE S I HER103 4110 HER305 DIODE SI HER306 4120 D609 DIODE Sl 4130 DIODE SI DSOOl N41480 DIODE SI 4140 D611...
- Page 27 ASSEMBLY NAME: MAIN PWB ASSY SPEC NO. LOCATION ITEM NAME ITEM PART NUMBER 4590 Q404 TRANSISTOR 4600 Q405 TRANSISTOR 4610 Q406 TRANSISTOR 4620 HEAT SINK 21 5200100 4630 SCREW TAPPING TRANSISTOR TIP122 4640 Q409 4650 HEAT SINK 21520001 10 4660 SCREW TAPPING 4670 Q410...