Related Manuals for Daewoo 531X-3
Summary of Contents for Daewoo 531X-3
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Page 1: Service Manual
Service Manual XGA COLOR MONITOR Model : 531X-3/532X-3 531B-3/532B-3 DAEWOO LUCOMS CO., LTD. http://www.lucoms.com Nov., 2003... -
Page 2: Table Of Contents
X-Ray, shock, fire or other hazards. Do not modify the original design without getting written permission from DAEWOO LUCOMS CO. or this will void the original parts and labor warranty. X-Ray WARNING: The only potential source of X-Ray is the picture tube. -
Page 3: Safety Precautions
GENERAL SAFETY INFORMATION SERVICING PRECAUTIONS Terms in the manual CAUTION: Before servicing instruments covered by this service manual, its supplements, and addendum, please read and follow the SAFETY PRECAUTIONS of this manual. CAUTION Statements identify conditions or practices that could result in damage to the equipment or other property. - Page 4 Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components are commonly called Electrostatically Sensitive (ES) Devices. The typical examples of ES devices are integrated circuits, some field-effect transistors, and semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity.
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Page 5: Technical Information
GENERAL INFORMATION This color monitor automatically scans all horizontal frequencies from 30KHz to 54KHz, and all vertical frequencies from Power IC, Transistor or Devices Removal/Replacement 50Hz to 160Hz. This color monitor supports IBM PC, PC/XT, PC/AT, personal System/2 (PS/2), Apple Macintosh, and compatible users crisp text and vivid color graphics display when using the following graphics adapters : (VGA, 8514/A, 1. -
Page 6: Pin Connector
PIN CONNECTOR OPERATION AND ADJUSTMENT Control Panel Signal Green Blue GND - Red GND - Green GND - Blue +5Vdc (optional) Arrangement of 15-pin D-sub connector GND - H.Sync GND - V.Sync Bi-directional Data (SDA) Horizontal Sync • Increase the value of any selected function. Vertical Sync (VCLK) •... - Page 7 OSD Functions Hot Key ICON CONTROL FUNCTIONS BRIGHTNESS Adjust the left and right margins for more convex or more concave PINCUSHION margins. POWER LIGHT Adjust the trapezoid of the screen by moving the lines inward or TRAPEZOID outward. When there is no OSD, if you press this Adjust the side balance when the sides of the screen are bowed PIN BALANCE BRIGHTNESS button, you can adjust the...
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Page 8: Alignment Procedure
ALIGNMENT PROCEDURE Standard Adjustment Conditions 1. Power source voltage : 100-240Vac 50/60Hz ICON CONTROL FUNCTIONS 2. Aging : Take at least 20 minutes warm-up time. 3. Signals Video : Analog 0.7Vpp 75Ω terminal positive polarity Synchronizing : TTL level Negative/Positive Separate Adjust the position of the display horizontally (left or right) . -
Page 9: Troubleshooting Hints
TROUBLESHOOTING HINTS 1. No Character 6. Static Convergence Adjustment (a) Apply a magenta cross hatch pattern on display. No Character (b) Adjust the focus from the best over all focus on the display. Also adjust the brightness to the desired condition. (c) Vertical red and blue lines are converged by varying the angle between the two tabs of the 4-pole magnets. - Page 10 2. No Raster 3. A Missing Color No Raster One color is missing Is Heater Is CRT Trouble in Voltage (CRT PWA) heater red-hot? Is input signal Check video signal about 6V? normal? cable or video card. 0.7Vpp Trouble in Turn the Brightness Refer to trouble in &...
- Page 11 4. Abnormal OSD Font 5. Horizontal Output Circuit MODE B+ Voltage 31KHz 60Vdc Trouble in Horizontal output circuit 37KHz 70Vdc (No Raster Abnormal OSD Font * If menu key selected. 43KHz 80Vdc 54KHz 105Vdc 60KHz 120Vdc Is menu Is the H/V Check the Is the key selected?
- Page 12 6-2. Vertical 6. Unstable Picture 6-1. Horizontal Unstable picture Unstable picture Is the 14V,-13V Refer to P. S. U line voltage is correct? Is the Trouble in IC501 pulse of pin 1 of or its ambient the IC501 circuit correct? Is the pulse of pin 5 of Trouble in...
- Page 13 7. Focus 8. Convergence Monitor remains Poor convergence unfocused Check Focus VR in convergence Adjust static on the center area convergence bad? Refer to Adjustment procedure of convergence focus convergence on the Adjust D.Y acceptable? fringe area bad? Location Trouble in Focus circuit (FBT)
- Page 14 9. Abnormal Picture 9-2. Vertical Size * At first, adjust controls in the OSD Menu 9-1. Horizontal Size Abnormal V.Size Abnormal H.Size Is changeable the changeable the Trouble in R407, C404 DC level of pin Waveform of 23 of the IC501? IC401 pin 1? Check IC501 the DC level...
- Page 15 11. Power Supply Unit (P.S.U) 10. Side-Pincushion Circuit Pincusion distortion Trouble in P.S.U is excessive or barrel Select the power switch Switch on side-pincushion icon in OSD menu, and adjust acceptable position. Check the power cord outlet fuse F001 and diode D001,D002,D003,D004 O.K? Is the Check the Base...
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Page 16: Block Diagram
BLOCK DIAGRAM Is voltage Trouble in D133 of C136 14Vdc? or horizontal part Trouble in D134 voltage of C137 or vertical part -13Vdc? Is voltage Trouble in D132 of C135 8Vdc? P.S.U O.K... -
Page 17: Schematic Diagram
SCHEMATIC DIAGRAM Power & Connection Section(531X-3) - Page 18 Video Section(531X-3)
- Page 19 Horizontal Section(531X-3)
- Page 20 Power & Connection Section(531B-3)
- Page 21 Video Section(531B-3)
- Page 22 Horizontal Section(531B-3)
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Page 23: Exploded View Diagram
EXPLODED VIEW DIAGRAM... -
Page 24: Information Of Part Description
INFORMATION OF PART DESCRIPTION Important Safety Notice Components identified with the International Symbol have special characteristics important for safety. When replacing any components, use only manufacturer’s specified parts. Abbreviation of Description RESISTOR Description Allowance ± 1% ± 5% ± 10% ±... -
Page 25: Electrical Parts List
ELECTRICAL PARTS LIST The components identified by mark have special characteristics important for safety and x-ray radiation. These should be replaced only with the types specified in the parts list. PART-CODE PART-NAME PART-DESC PART-CODE PART-NAME PART-DESC PCB1 9979800610 PCB MAIN T=1.6*246*247 C206 CCXB1H221K C CERA... - Page 26 PART-CODE PART-NAME PART-DESC PART-CODE PART-NAME PART-DESC PART-CODE PART-NAME PART-DESC PART-CODE PART-NAME PART-DESC C601 CEXF2C479V C ELECTRO 160V RSS 4.7MF (8X16) TP D130 DUF4007—- DIODE UF4007 DZ201 DDZ5R6BM— DIODE ZENER DZ5.6BM Q516 TZTA1266Y- KTA1266Y- (AUTO)(1015Y) C602 CMXM2A103J C MYLAR 100V 0.01MF J (TP) D131 D31GF6——...
- Page 27 PART-CODE PART-NAME PART-DESC PART-CODE PART-NAME PART-DESC PART-CODE PART-NAME PART-DESC PART-CODE PART-NAME PART-DESC R823 RD-AZ101J- R CARBON FILM 1/6 100 OHM J SG803 DWSP201M— SURGE ABSORBER WSP-201M R222 RD-AZ101J- R CARBON FILM 1/6 100 OHM J R525 RD-AZ101J- R CARBON FILM 1/6 100 OHM J R223 RD-AZ562J- R CARBON FILM...
- Page 28 DIFFERENT ELECTRICAL PARTS LIST PART-CODE PART-NAME PART-DESC PART-CODE PART-NAME PART-DESC B002 5PB13890— COIL BEAD BI3890 B002 5MBFD3512R COIL BEAD BFD 3512 R2 B003 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING B003 5MBFS3550R COIL BEAD BFS 3550 R2 B004 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING B004 5MBFS3550R...
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