CONTENTS SAFETY PRECAUTIONS GENERAL SAFETY INFORMATION SERVICING PRECAUTIONS TECHNICAL INFORMATION GENERAL INFORMATION PIN CONNECTOR CAUTIONS FOR ADJUSTMENT AND REPAIR OPERATION AND ADJUSTMENT ALIGNMENT PROCEDURE TROUBLESHOOTING HINTS BLOCK DIAGRAM PCB LAYOUT SCHEMATIC DIAGRAM EXPLODED VIEW & MECHANICAL PARTS LIST INFORMATION OF PART DESCRIPTION ELECTRICAL PARTS LIST...
X-Ray, shock, fire or other hazards. Do not modify the original design without getting written permission from DAEWOO ELECTRONICS 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.
GENERAL SAFETY INFORMATION Terms in the manual CAUTION Statements identify conditions or practices that could result in damage to the equipment or other property. WARNING Statements identify conditions or practices that could result in personal injury or loss of life. Terms as marked on equipment CAUTION Statements indicate a personal injury hazard not immediately accessible as one reads the...
SERVICING PRECAUTIONS CAUTION: Before servicing instruments covered by this service manual, its supplements, and addendum, please read and follow the SAFETY PRECAUTIONS of this manual. NOTE: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions on page 1 of this manual, always follow the safety precautions. Remember: Safety First.
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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.
FIGURE 1. USE SOLDERING IRON TO PRY LEADS IC Removal/Replacement Some utilized chassis circuit boards have slotted (oblong) holes through which the IC leads are inserted and then bent flat against the circuit foil. When holes are slotted, the following technique should be used to remove and replace the IC.
4. Securely crimp each connection and solder it. 5. Inspect the solder joints of the two “original” leads on the circuit board copper side. If they are not shiny, reheat them and apply additional solder if necessary. TECHNICAL INFORMATION Model Names 720D 905D CDT Size 17-inch 19-inch Diagonal visible image area 16.2-inch...
GENERAL INFORMATION This color monitor automatically scans all horizontal frequencies from 30KHz to 95Hz, and all vertical frequencies from 50Hz to 160Hz. This color monitor adopted the OSD (On Screen Display), it shows the sync polarity and frequency and it provides that easily adjust control. 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, Super VGA, VESA and XGA and Apple Macintosh Video Card).
PIN CONNECTOR Signal Green Blue GND - Red GND - Green GND - Blue 5Vdc Arrangement of 15-pin D-sub connector GND - H.Sync GND - V.Sync Bi-directional Data (SDA) Horizontal Sync Vertical Sync (VCLK) Data Clock (SCL) CAUTIONS FOR ADJUSTMENT AND REPAIR •...
OPERATION & ADJUSTMENT Control Panel • Move cursor to the right window on the OSD window. • Increase the value of any selected function. • Move cursor to the left window on the OSD window. • Decrease the value of any selected function. •...
OSD Functions ICON CONTROL FUNCTIONS Select language for OSD (5 languages). LANGUAGE H. CENTER & Adjust the position of the display horizontally(left or right) and vertically (up or down). V. CENTER Choose different preset color temperatures or set your own customized color COLOR TEMP parameters.
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ICON CONTROL FUNCTIONS Adjust the left and right margins for more convex or more concave margins. PINCUSHION Adjust the trapezoid of the screen by moving the lines inward or outward. TRAPEZOID Adjust the side balance when the sides of the screen are bowed towards left or PIN BALANCE right.
ALIGNMENT PROCEDURE Standard Adjustment Conditions 1. Power source voltage : AC 100 - 240Vac, 50/60Hz. 2. Aging : Take at least 15 minutes warm-up time. 3. Signals. Video : Analog 0.7Vpp 75Ω terminal positive polarity Synchronizing : Composite H+V Sync : 1.0Vpp ~ 5.0Vpp (Positive / Negative) Separate H, V Sync : TTL Level (Positive / Negative) Deflection frequency Horizontal Frequency : 30KHz - 95KHz...
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5. Static Convergence Adjustment (a) Apply a magenta cross hatch pattern on display. (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 angles between the two tabs of the 4-pole magnets.
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9. Abnormal Picture 9-1. Horizontal Size * At first, adjust controls in the OSD Menu The B+ are as follows: MODE Scan B+ 43KHz 68KHz 79KHz 112V 91KHz 127V...
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% ±...
These should be replaced only with the types specified in the parts list. PART-CODE PART-NAME PART-DESC NOTE 00020 W3475N731- CORD POWER 3 H05VV-F 3X0.75 1.8 IV 00160 5M20000003 COIL TILT TC-17B-1 720D only B002 5PB13857-- COIL BEAD BI3857(AXIAL) B301 5PB13857-- COIL BEAD BI3857(AXIAL) B502 5PB13857-- COIL BEAD BI3857(AXIAL)
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BUP 3KV 2200PF J C542 CMXH3L222J C MYLAR BUP 3KV 2200PF J C543 CCXB3A102K C CERA 1KV B 1000PF K (TAPPING) 720D only C543 CCXB3A152K C CERA 1KV HIKB 1500PF K 905D,905DF only C543 CCXB3A222K C CERA HIKB 1KV 2200PF K...
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HIKE 2KV 0.01MF P C565 CMXF2G104J C MYLAR MPP 400V 0.1MF J 905DS,905DF only C565 CMXF2G124J C MYLAR MPP 400V 0.12MF J 720D,905D only C566 CMXF2G124J C MYLAR MPP 400V 0.12MF J C571 CCXF1H104Z C CERA 50V F 0.1MF Z C577...
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905D,905DF only CS803 9979300007 SOCKET CRT ISDS08S CT002 9970710246 CRT GND AS 0.16*3*16+BL102NG=740 905DS only CT002 9970710251 CRT GND AS 0.16*3*16+BL102NG=730 720D only CT802 9979617042 M41KXU200XX061 (0.26) 720D only CT802 9979619007 M46QCE261X112(T4) 905D only CT802 9979619008 M46QCY261X112(SHORT) 905DS only CT802 9979619011...
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1N4148 AUTO 52MM D865 DZN4148--- DIODE 1N4148 AUTO 52MM D891 DBAV20---- DIODE BAV20 DG001 5MG0000069 COIL DEGAUSSING DG-905D 905D only DG001 5MG0000069 COIL DEGAUSSING DG-905D 905DF only DP001 5MG0000064 COIL DEGAUSSING DG-712D 720D only DP001 5MG0000069 COIL DEGAUSSING DG-905D 905DS only...
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1/2 3.9 OHM J J330 RD-4Z479J- R CARBON FILM 1/4 4.7 OHM J J389 RD-4Z479J- R CARBON FILM 1/4 4.7 OHM J 720D only J389 RD-AZ479J- R CARBON FILM 1/6 4.7 OHM J 905D,905DS,905DF only J556 RD-4Z100J- R CARBON FILM...
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PART-CODE PART-NAME PART-DESC NOTE R022 RD-AZ471J- R CARBON FILM 1/6 470 OHM J R023 RD-AZ103J- R CARBON FILM 1/6 10K OHM J R025 RW01Z128JN R WIRE WOUND 1W 0.12 OHM J NON-INDUCT R026 RX05V122J- R CEMENT 5W 1.2K OHM J VERTICAL R027 RD-AZ563J- R CARBON FILM...
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R414 RD-2Z229J- R CARBON FILM 1/2 2.2 OHM J 905DS only R414 RD-2Z249J- R CARBON FILM 1/2 2.4 OHM J 720D,905D only R414 RD-2Z279J- R CARBON FILM 1/2 2.7 OHM J 905DF only R416 RD-AZ682J- R CARBON FILM 1/6 6.8K OHM J...
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R528 RD-AZ153J- R CARBON FILM 1/6 15K OHM J 905DF only R528 RD-AZ393J- R CARBON FILM 1/6 39K OHM J 720D,905D,905DS only R530 RD-AZ244J- R CARBON FILM 1/6 240K OHM J R531 RS02Z201J- R M-OXIDE FILM 2W 200 OHM J...
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PART-CODE PART-NAME PART-DESC NOTE R572 RD-AZ151J- R CARBON FILM 1/6 150 OHM J R573 RD-AZ471J- R CARBON FILM 1/6 470 OHM J R574 RD-AZ471J- R CARBON FILM 1/6 470 OHM J R576 RD-4Z304J- R CARBON FILM 1/4 300K OHM J R578 RS01Z129J- R M-OXIDE FILM...