Daewoo 710B Manual de Serviço

Service ManualXGA COLOR MONITORModel : 710BDAEWOO ELECTRONICS CO., LTDOVERSEAS SERVICE DEPT.

PIN CONNECTORCAUTIONS FOR ADJUSTMENT AND REPAIR• Degaussing is always required when adjusting purity or convergence.• The white balance adjustment has

OPERATION & ADJUSTMENT9ADJUSTMENT KEYLaunch OSD(On-Screen Display) menusSelect the next functionIncrease the value of any selected functionDecreas

10ADJUSTMENT PROCESSWhen you choose the icon on the OSD window, you can exit the OSD screen.BRIGHTNESS50%TRAPEZOID50%COLOR TEMP.K9300 6550RED GAINK50

11OSD(On-Screen Display) Menu 1CONTRAST50%BRIGHTNESS50%H.POSITION50%H.SIZE50%V.POSITION50%V.SIZE50%Adjust the contrast of image, the difference betwee

12OSD(On-Screen Display) Menu 2TRAPEZOID50%PIN BALANCE50%V. MOIRE50%PARALLELOGRAM50%Adjust the left and right margins for more convex or more concavem

13OSD(On-Screen Display) Menu 3OSD(On-Screen Display) Menu 4RED GAIN50%GREEN GAIN50%BLUE GAIN50%RED BIAS50%GREEN BIAS50%BLUE BIAS50%Choose different p

14Self DiagnosisNo Signal screen is displayed when the D-Sub signal connector is notconnected or the status of the monitor is on DPMS mode.Out of Rang

TROUBLESHOOTING HINTS151. No CharacterAre theContrast &Brightness ControlsmaximumChange the Contrast &Brightness control tomaximumNo RasterRef

162. No RasterTrouble inpower supplycircuitTrouble in powersupply circuitTrouble in G1line of Main PWBTrouble in FBTHigh Voltagetrouble in FBTTrouble

173. A missing ColorIs input signalnormal?One color ismissingCRTCathode (Rk, Gk, Bk)is normal?Is videooutput IC803 waveformnormal?Each grid (G1, G2)vo

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

184. Abnormal OSD FontIs menukey selected?Is OSD Fontexist?* If menu key selected.Is HeaterVoltage (CRT PWB)about 6V?Abnormal OSD FontIs theoutput of

195. Horizontal Output CircuitIs theB+line voltageover 45V?Is the H-outwaveform of IC501normal?Trouble in B+ Booster Circuit(Check the B+section of IC

206. Unstable Picture6-1. HorizontalUnstablepictureIs H.Syncinput pin of IC501correct?Check H.Sync Out ofMicom or its ambientcircuits.Is the pin 3 of

216-2. V.OSC/Deflection CircuitUnstable orAbnormal pictureIs± 13V DC linecorrect?Trouble inpower supply unitNoYesIsthe outputwaveform of IC401(pin 6)

227. FocusMonitor remainsunfocusedCheckFocus VR in FBTIsfocusacceptable?Trouble in Focuscircuit (FBT)YesOKNo

237-1. Dynamic FocusFocus is poorIs thewaveform of theDF pin in FBTcorrect?PHILIPS : 440V 180VNEC : 300V 120VSAMSUNG : 300V 120V1. C

248. ConvergenceIsconvergenceon the center areabad?Isconvergence on thefringe area bad?Adjust staticconvergenceRefer toAdjustmentprocedure ofconvergen

259. Abnormal Picture9-1. Horizontal SizeWhenthe VR601 ischanged, is the H.sizechanged?NoYesCheck pin 15 of IC501and its ambient circuit(D604, R605, R

269-2. Vertical SizeIschangeable theDC voltage ofIC401 pin 1?Check the IC401and itsambient circuitCheck the IC501 andits ambient circuitNoNoTrouble V.

2710. High Voltage CircuitTrouble in Q574 or FBTIs Q574base waveformnormal?YesYesTrouble in Q572, Q57312V LineIs Q571collector waveformnormal?YesNoTro

SAFETY PRECAUTIONS1Safety CheckCare should be taken while servicing this analog color display because of the high voltages used in the deflectioncircu

2811. Side-Pincushion CircuitSide-Pincusion distortionis excessive or barrelO.KSelect theside-pincushionicon on OSD menu,and adjust acceptableposition

2912. Power Supply Unit (P.S.U)Is thevoltage of IC001pin 3 16V?Replace R004Replace C005NoIsvoltage of C10180V DC?Trouble in D101 orVideo PartNoIsvolta

30Is voltageof C1068.7V DC?Trouble in D106 or Q103NoIs voltageof C104 13V DC?NoYesYesYesIs voltage of C105 -13V DC?Trouble in D105 or vertical Part.P.

31ALIGNMENT PROCEDUREStandard Adjustment Conditions1. Power source voltage : AC 120V, 60Hz./AC 220V, 50Hz2. Aging : Take at least 20 minutes warm-up t

32(l) Repeat (e),(f),(g),(h),(i),(j).Just a difference from 9300°K mode is color coordinates.Set color coordinates in X=0.313, Y=0.3296. Static Conver

33BLOCK DIAGRAMROSD ICMICOMLSC4525P2 68HC705BD32H.VSDA SCLH.V SDA120V,80V,45V12V, –12VSCLSCL SDAOSDVIDEOPREAMPEEPROM24C08BTILT ICL272MV.DRV AMPV.DYVID

34PCB LAYOUTMain PCB Component Side

Main PCB Solder Side35

36Video PCB Component SideVideo PCB Solder Side

GENERAL SAFETY INFORMATIONWarning: This product includes criticalmechanical and electrical parts which areessential for x radiation safety. For contin

EXPLODED VIEW DIAGRAM38

RESISTOR DescriptionExample:CAPACITOR DescriptionExample:Fig &Part No DescriptionIndexR101ResistorsRE-42820J Cabron: 82JAllowanceF±1%J±5%K ± 10%M

LOC PART-CODE PART-NAME PART-DESC10010 PCFMCAJ046 COVER FRONT AS CMC-710BCT801 9979617018 CDT M41QAR361X124(E)CT802 9970710176 CRT GND AS 0.12*5*24+BL

41LOC PART-CODE PART-NAME PART-DESCD504 DDTV32F--- DIODE DTV32FQ504 T2SC5387-- TR H.OUT 2SC5387Q574 TKSC5386-- TR KSC5386Q551 T1RF630ATS FET IRF630A-T

42LOC PART-CODE PART-NAME PART-DESCC802 HCFK104ZCA C CHIP CERA 50V Y5V 0.1MF Z 2012C803 HCFK104ZCA C CHIP CERA 50V Y5V 0.1MF Z 2012C812 HCFK104ZCA C C

43LOC PART-CODE PART-NAME PART-DESCR506 HRFT272JCA R CHIP 1/10 2.7K OHM J 2012R508 HRFT472JCA R CHIP 1/10 4.7K OHM J 2012R513 HRFT153JCA R CHIP 1/10 1

44LOC PART-CODE PART-NAME PART-DESCC531 CEXF1C102V C ELECTRO 16V RSS 1000MF (10X20) TPC551 CMXF2D204J C MYLAR MPP 200V 0.2MF J (TP)C552 CMXF2D184J C M

45LOC PART-CODE PART-NAME PART-DESCP401 9977410800 TERMINAL PIN BSP1(SN) L=15MMP402 9977410800 TERMINAL PIN BSP1(SN) L=15MMP403 9977410800 TERMINAL PI

46LOC PART-CODE PART-NAME PART-DESCC011 CEXF1H109V C ELECTRO 50V RSS 1MF (5X11) TPC013 CEXF1H109V C ELECTRO 50V RSS 1MF (5X11) TPC014 CCXF1H223Z C CER

47LOC PART-CODE PART-NAME PART-DESCC515 CMXM2A104J C MYLAR 100V 0.1MF J (TP)C516 CCXF1H104Z C CERA 50V F 0.1MF ZC517 CEXF2A100V C ELECTRO 100V RSS 10M

SERVICING PRECAUTIONS3General Servicing Precautions1. Always unplug the AC power cord from the AC power source before:a. Removing or reinstalling any

48LOC PART-CODE PART-NAME PART-DESCQ201 TKSD471ACY TR KSD471ACYQ202 TKSD471ACY TR KSD471ACYQ203 TZSR1006-- TR KSR1006 (AUTO)Q204 TZSR1006-- TR KSR1006

49LOC PART-CODE PART-NAME PART-DESCB881 5PB13857-- COIL BEAD BI3857(AXIAL)C009 CCZB1H102K C CERA 50V B 1000PF KC201 CCZB1H181K C CERA 50V B 180PF KC20

50LOC PART-CODE PART-NAME PART-DESCD572 DZN4148--- DIODE 1N4148 AUTO 52MMD574 DZN4148--- DIODE 1N4148 AUTO 52MMD578 DFDH400--- DIODE FDH400D601 DZN414

51LOC PART-CODE PART-NAME PART-DESCR212 RN-AZ9091F R METAL FILM 1/6 9.09K OHM FR213 RN-AZ8252F R METAL FILM 1/6 82.5K OHM FR214 RN-AZ1502F R METAL FIL

52LOC PART-CODE PART-NAME PART-DESCR522 RD-AZ203J- R CARBON FILM 1/6 20K OHM JR524 RD-4Z101J- R CARBON FILM 1/4 100 OHM JR525 RD-4Z121J- R CARBON FILM

53LOC PART-CODE PART-NAME PART-DESCR607 RD-AZ153J- R CARBON FILM 1/6 15K OHM JR611 RD-AZ103J- R CARBON FILM 1/6 10K OHM JR751 RD-AZ153J- R CARBON FILM

54LOC PART-CODE PART-NAME PART-DESCR998 RD-AZ471J- R CARBON FILM 1/6 470 OHM JR999 RD-AZ433J- R CARBON FILM 1/6 43K OHM JTP1 85801052GY WIRE COPPER 1/

55LOC PART-CODE PART-NAME PART-DESCB0001 9979800463 PCB VIDEO T1.6*244*246B803 5PB13857-- COIL BEAD BI3857(AXIAL)B805 5PB13857-- COIL BEAD BI3857(AXIA

56LOC PART-CODE PART-NAME PART-DESCR864 RD-4Z271J- R CARBON FILM 1/4 270 OHM JR865 RD-4Z101J- R CARBON FILM 1/4 100 OHM JR867 RC-2Z470J- R CARBON COMP

Serv ce Manual DAEWOO ELECTRONICS CO., LTDOVERSEAS SERVICE DEPT.DAEWOO ELECTRONICS CO., LTD686, AHYEON-DONG MAPOGU,SEOUL, KOREA.C.P.O. BOX 8003 SEOUL

4Electrostatically Sensitive (ES) DevicesSome semiconductor (solid state) devices can be damaged easily by static electricity.Such components commonly

5FIGURE 1. USE SOLDERING IRON TO PRY LEADSIC Removal/ReplacementSome utilized chassis circuit boards have slotted (oblong) holes through which the IC

6Power IC, Transistor or Devices Removal/Replacement1. Heat and remove all solders from the device leads.2. Remove the heatsink mounting screw (if app

GENERAL INFORMATION7This color monitor automatically scans all horizontal frequencies from 30KHz to 69KHz, and all verticalfrequencies from 50Hz to 16