Daewoo Lucoms 719BF-3 Technical Information

17163. A Missing ColorIs input signalnormal?One color ismissingCRTCathode (Rk, Gk, Bk)is normal?Is videooutput IC802waveform normal?Each grid (G1, G2)

19185. Horizontal Output CircuitIs theB+line voltageover 50V?Is the H-outwaveform of IC501normal?Trouble in IC501Trouble in Horizontaloutput circuit(N

21206-2. VerticalUnstablepictureIs the14V,-13V line voltage iscorrect?Refer to P. S. UIs thepulse of pin 5 ofthe IC401 correct?Trouble in vertical D.

23228. ConvergenceIsconvergenceon the center areabad?Isconvergence on thefringe area bad?Adjust staticconvergenceRefer toAdjustmentprocedure ofconverg

25MODE B+ Voltage31KHz 60Vdc37KHz70Vdc43KHz 80Vdc54KHz 105Vdc60KHz 120Vdc68KHz 145Vdc249-2. Vertical SizeIschangeable theWaveform ofIC401 pin 1?Troubl

272611. Power Supply Unit (P.S.U)Is theIC001O.K?Replace IC001NoIsvoltage of C13350Vdc?NoIsvoltage of D002130V (270V)?Trouble in switchingpower transfo

2928BLOCK DIAGRAM Is voltageof C1358Vdc?Trouble in D132NoIs voltageof C136

SCHEMATIC DIAGRAMPower & Connection Section(531X-3)30

Video Section(531X-3)31

Horizontal Section(531X-3)32

CONTENTSSAFETY PRECAUTIONS 1GENERAL SAFETY INFORMATION 2SERVICING PRECAUTIONS 3TECHNICAL INFORMATION 6GENERAL INFORMATION 7PIN CONNECTOR 8CAUTIONS FOR

33Power & Connection Section(531B-3)

34Video Section(531B-3)

35Horizontal Section(531B-3)

EXPLODED VIEW DIAGRAM36

37RESISTOR DescriptionExample:CAPACITOR DescriptionExample:Fig &Part No DescriptionIndexCapacitorsC102 CCXF1H104Z Ceramic 50V 0.1µF ZC402

38PCB1 9979800610 PCB MAIN T=1.6*246*247PCB2 9979800611 PCB CRT T=1.6*108*82YP100 W1173D831- CORD POWER SP30+IS14(I)B001 5PB13857— COIL BEAD BI3857(AX

39C601 CEXF2C479V C ELECTRO 160V RSS 4.7MF (8X16) TPC602 CMXM2A103J C MYLAR 100V 0.01MF J (TP)C801 CCXB1H102K C CERA 50V B 1000PF K (TAPPING)C802 CCXB

41R222 RD-AZ101J- R CARBON FILM 1/6 100 OHM JR223 RD-AZ562J- R CARBON FILM 1/6 5.6K OHM JR224 RD-AZ101J- R CARBON FILM 1/6 100 OHM JR225 RD-AZ562J- R

43B002 5PB13890— COIL BEAD BI3890B003 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATINGB004 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATINGC015 CH1FDF22

32Warning: This product includes critical mechanical and electrical parts which are essential for x rayprotection. For continued safety, replace criti

54◆ Electrostatically Sensitive (ES) DevicesSome semiconductor (solid state) devices can be damaged easily by static electricity.Such components are

7This color monitor automatically scans all horizontal frequencies from 30KHz to 54KHz, and all vertical frequencies from50Hz to 160Hz. This color mon

98Pin Signal1 Red2 Green3 Blue4 GND5 GND6 GND - Red7 GND - Green8 GND - Blue9 +5Vdc (optional)10 GND - H.Sync11 GND - V.Sync12 Bi-directional Data (SD

1110OSD FunctionsICON CONTROL FUNCTIONSHot KeyBRIGHTNESS POWER LIGHTCONTRASTThe screen w

13ALIGNMENT PROCEDURE◆ Standard Adjustment Conditions1. Power source voltage : 100-240Vac 50/60Hz2. Aging : Take at least 20 minutes warm-up time.3.

1514TROUBLESHOOTING HINTS1. No CharacterChange the Contrast &Brightness control value tomaximumNo RasterRefer toNo RasterCheck the peripheral circ