Daewoo 901D Service Manual
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Daewoo 901D Service Manual

Daewoo 901D Service Manual

Xga color monitor
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Service Manual
XGA COLOR MONITOR
Model : 901D
DAEWOO ELECTRONICS CO., LTD
OVERSEAS SERVICE DEPT.

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Summary of Contents for Daewoo 901D

  • Page 1 Service Manual XGA COLOR MONITOR Model : 901D DAEWOO ELECTRONICS CO., LTD OVERSEAS SERVICE DEPT.

  • Page 2: Table Of Contents

    CONTENTS SAFETY PRECAUTIONS GENERAL SAFETY INFORMATION SERVICING PRECAUTIONS TECHNICAL INFORMATION GENERAL INFORMATION PIN CONNECTOR CAUTIONS FOR ADJUSTMENT AND REPAIR OPERATION & ADJUSTMENT ALIGNMENT PROCEDURE TROUBLESHOOTING HINTS BLOCK DIAGRAM PCB LAYOUT SCHEMATIC DIAGRAM EXPLODED VIEW & MECHANICAL PARTS LIST INFORMATION OF PART DESCRIPTION ELECTRICAL PARTS LIST...

  • Page 3: Safety Precautions

    It is essential that these critical parts should be replaced with manufacturer’s specified parts to prevent X-radiation, shock, fire or other hazards. Do not modify the original design without getting a written permission from DAEWOO ELECTRONICS CO. or this will void the original parts and labor warranty. X-Radiation WARNING: The only potential source of X-Radiation is the picture tube.

  • Page 4: General Safety Information

    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...

  • Page 5: Servicing Precautions

    SERVICING PRECAUTIONS CAUTION: Before servicing instruments covered by this service manual, its supplements and addendum, 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.
  • Page 6 Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. The examples of typical ES devices are integrated circuits, some field-effect transistors and semiconductor “chip” components.
  • Page 7 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.

  • Page 8: Technical Information

    Diode Removal/Replacement 1. Remove defective diode by clipping its leads as close as possible to diode body. 2. Bend the two remaining leads perpendicularly to the circuit board. 3. Observing diode polarity, wrap each lead out of the new diode around the corresponding lead on the circuit board.

  • Page 9: General Information

    GENERAL INFORMATION This color monitor automatically scans all horizontal frequencies from 30KHz to 95KHz, 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).

  • Page 10: Pin Connector

    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 •...

  • Page 11: Operation & Adjustment

    OPERATION & ADJUSTMENT ADJUSTMENT KEY • Launch OSD(On-Screen Display) MENU window • Move cursor to the FUNCTION window from the MENU window • Select a FUNCTION among 8 FUNCTIONs on the FUNCTION window • Move cursor to the next MENU on the MENU window •...

  • Page 12: Osd Menu

    OSD MENU MENU WINDOW CURSOR FUNCTION WINDOW ADJUSTMENT WINDOW ADJUSTMENT PROCESS MENU MENU MENU When you choose the icon on the OSD window, you can exit the OSD screen.
  • Page 13 Main Menu Functions Adjust the contrast of image, the difference between light and dark areas on the screen. Range : 0 -100 % Adjust the brightness of the entire image. Adjust the position of the display horizontally (left or right). Adjust the display width (horizontal size).
  • Page 14 Geometry Menu Functions Adjust the left and right margins for more convex or more concave margins. • Image turns to • Image turns to Adjust the trapezoid of the screen by moving the lines inward or outward. • Image turns to •...
  • Page 15 Color Menu Functions Choose different preset color temperatures or set your own customized color parameters. Adjust the red gain. Adjust the green gain. Adjust the blue gain. Adjust the red bias. Adjust the green bias. Adjust the blue bias. Return to the Color Menu Window.
  • Page 16 Utility Menu Functions Display horizontal & vertical frequency and polarity. Degauss the display and restore image quality. YES : VESA DPMS operation. NO : NO DPMS operation. Select language for OSD. Select a Input Signaling Type between D-Sub and BNC connector. Display a RGB Color Bar to determine whether the screen color is expressed normally or not.
  • Page 17 Special Menu Functions Adjust the horizontal linearity. Adjust the vertical linearity. Adjust the horizontal picture moire cancellation. Adjust the vertical picture moire cancellation. Adjust the focus image. Return to the Special Menu Window.

  • Page 18: Self Diagnosis

    Self Diagnosis When the monitor doesn’t display, if you press any key, Self Diagnosis screen is displayed. Self Diagnosis function checks if the status of the monitor is No Signal or Out of range. No Signal screen is displayed when the D-Sub signal connector is not connected or the status of the monitor is on DPMS mode.

  • Page 19: Alignment Procedure

    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 : H+V Sync on Green : 0.286Vpp ± 5% (Negative) Composite H+V Sync : 1.0Vpp ~5.0Vpp (Positive / Negative) Separate H, V Sync : TTL Level (Positive / Negative) Deflection frequency...
  • Page 20 (m) Check if the x,y coordinates of color analyzer is in x=0.281 ± 0.015, y=0.311 ± 0.015. If the color coordinates is out of range, adjust the R.G.B Bias & Gain to get the coordinates in X=0.281, Y=0.311. Make sure that the coordinates is in range by using contrast control. (n) Check the screen luminosity up to 30 Ft/L in brightness &...

  • Page 21: Troubleshooting Hints

    TROUBLESHOOTING HINTS 1. No Character...
  • Page 22 2. No Raster...
  • Page 23 3. A missing Color...
  • Page 24 4. Abnormal OSD Font...
  • Page 25 5. Horizontal Output Circuit MODE P6 Voltage VGA (31.5KHz) S.VGA (37.8KHz) XGA 46K CAD 68K 109V 81KHz 129V 93KHz 144V...
  • Page 26 6. Unstable Picture 6-1. Horizontal...
  • Page 27 6-2. V.OSC/Deflection Circuit...
  • Page 28 7. Focus...
  • Page 29 7-1. Dynamic Focus...
  • Page 30 8. Convergence...
  • Page 31 9. Abnormal Picture 9-1. Horizontal Size *At first, adjust controls in the OSD MENU. *The B+ are as follows: MODE Scan B+ S.VGA XGA 46K CAD 68K 109V 129V 144V...
  • Page 32 9-2. Vertical Size...
  • Page 33 10. High Voltage Output Circuit MODE B+ (P6) SVGA XGA 46K CAD 68K 109V 129V 144V...
  • Page 34 11. Side-Pincushion Circuit...
  • Page 35 12. Power Supply Unit (P.S.U)

  • Page 37: Block Diagram

    BLOCK DIAGRAM...

  • Page 38: Schematic Diagram

    SCHEMATIC DIAGRAM Main...
  • Page 39 Video...

  • Page 40: Exploded View & Mechanical Parts List

    EXPLODED VIEW & MECHANICAL PARTS LIST...

  • Page 41: 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 42: Electrical Parts List

    W1173D831- CORD POWER SP30+IS14(I) 00090 9970K00016 CORE FERRITE OP-18(B) 00100 9979500015 RECEPTACLE 03GEEG3B/FILTER EMI 10000 9979800466 PCB MAIN CMC-901D T=1.6*330*246 10000 9979800467 PCB VIDEO CMC-901D T=1.6*246*120 10000 9979800468 PCB CRT CMC-901D T=1.6*68*68 10000 9979800470 PCB CONTROL CMC-901D T=1.6*193*35 B001 5PB13857—...
  • Page 43 PART-CODE PART-NAME PART-DESC C021 CEYP2G331C C ELECTRO KMH 400V 330MF 30*45 C023 CCYB3A103K C CERA 1KV B 0.01MF K C024 CEXF1E331C C ELECTRO 25V RUS 330MF 10*12.5(TP) C025 CEXF2C220C C ELECTRO 160V RUS 22MF (10X20)TP C026 CMXH3A102J C MYLAR BUP 1KV 1000PF J(TP) C027 CCZB1H471K C CERA...
  • Page 44 PART-CODE PART-NAME PART-DESC C163 CMXL2D473J C MYLAR MEU 200V 0.047MF J(TP) C164 CEXF2E330C C ELECTRO 250V RUS 33MF (13*25) C165 HCQK471JCA C CHIP CERA 50V CH 470PF J 2012 C166 HCFK104ZCA C CHIP CERA 50V Y5V 0.1MF Z 2012 C168 CCZB1H471K C CERA 50V B 470PF K...
  • Page 45 PART-CODE PART-NAME PART-DESC C313 CCZB1H221K C CERA 50V B 220PF K C315 CEXE1H100C C ELECTRO 50V RU 10MF (5X11) TP C316 HCFK104ZCA C CHIP CERA 50V Y5V 0.1MF Z 2012 C317 CEXE1H100C C ELECTRO 50V RU 10MF (5X11) TP C318 CEXE1H100C C ELECTRO 50V RU 10MF (5X11) TP...
  • Page 46 PART-CODE PART-NAME PART-DESC C516 HCFK104ZCA C CHIP CERA 50V Y5V 0.1MF Z 2012 C517 CEXF1C471C C ELECTRO 16V RUS 470MF (10X12.5)TP C518 CEXF1C471C C ELECTRO 16V RUS 470MF (10X12.5)TP C519 CMXE2A102J C MYLAR PL 100V 1000PF J C520 CEXE1H229C C ELECTRO 50V RU 2.2MF (5X11) TP C521 CEXE1H229C...
  • Page 47 PART-CODE PART-NAME PART-DESC C578 CEXF1E470C C ELECTRO 25V RUS 47MF (5X11) TP C579 CMXF2G274J C MYLAR MPP 400V 0.27MF J C580 CMXF2D154J C MYLAR 200V MPP 0.15MF J C581 CMXF2D224J C MYLAR MPP 200V 0.22MF J C582 CMXF2D564J C MYLAR MPP 200V 0.56MF J C583 CMXF2D394J...
  • Page 48 PART-CODE PART-NAME PART-DESC C825 CMXM2A223J C MYLAR 100V 0.022MF J TP C826 CCXB1H181K C CERA 50V B 180PF K (TAPPING) C827 CCXB1H181K C CERA 50V B 180PF K (TAPPING) C828 CEXD1H339F C ELECTRO 50V RND 3.3MF (5X11) TP C829 CEXD1H339F C ELECTRO 50V RND 3.3MF (5X11) TP C830...
  • Page 49 PART-CODE PART-NAME PART-DESC C865 CEXF1E470C C ELECTRO 25V RUS 47MF (5X11) TP C866 HCFK103ZCA C CHIP CERA 50V Y5V 0.01MF Z 2012 C867 HCFK103ZCA C CHIP CERA 50V Y5V 0.01MF Z 2012 C869 CEXD1H339F C ELECTRO 50V RND 3.3MF (5X11) TP C870 HCFK103ZCA C CHIP CERA...
  • Page 50 PART-CODE PART-NAME PART-DESC CA303 99707C0008 CONN AS SMH250-3/9+1007#24=350 CA701 9970740037 CONN AS YMH250-4+1007#24=250 CA801 9970710177 CONN AS 35740-1410+9712=100 CA804 9970760040 CONN AS SMH250-6+US2990=130 CA901 9970710178 CONN AS 0.12*6*16+35072-9712=130 CA902 9970710178 CONN AS 0.12*6*16+35072-9712=130 CT001 9970710173 CRT GND AS 0.12*5*24+BL101NG=810 CT002 9979619003 M46LLQ683X01(PU) CW001...
  • Page 51 PART-CODE PART-NAME PART-DESC D155 DS2L60—-R DIODE S2L60 D156 DZN4148—- DIODE 1N4148 AUTO 52MM D191 DRLS4148— DIODE CHIP RLS4148 D192 D1N4002A— DIODE 1N4002 D201 DZN4148—- DIODE 1N4148 AUTO 52MM D221 DRU3AM—— DIODE RU3AM(HIGH SPEED) D231 DRF1——— DIODE RF-1 D241 DRU1P——- DIODE RU 1P (TAPPING) D242 DRU1P——-...
  • Page 52 D867 DZN4148—- DIODE 1N4148 AUTO 52MM D868 DFDH400—- DIODE FDH400 DL701 DAL151RGW- AL-151RGW DP001 5MG0000061 COIL DEGAUSSING DG-901D DSUB 9979200181 D-SUB 15P STRAIGHT 15P DDC BLUE W/OUT SCREW DZ021 DDZ15BM—- DIODE ZENER DZ15BM DZ101 DDZ8R2BM— DIODE ZENER DZ8.2BM DZ152 DDZ12BM—-...
  • Page 53 PART-CODE PART-NAME PART-DESC DZ401 DDZ5R1B—- DIODE ZENER DZ-5.1B DZ531 DDZ5R1B—- DIODE ZENER DZ-5.1B DZ541 DDZ12BM—- DIODE ZENER DZ12BM DZ561 DDZ15BM—- DIODE ZENER DZ15BM DZ801 DDZ6R2BM— DIODE ZENER DZ6.2BM DZ802 DDZ6R2BM— DIODE ZENER DZ6.2BM DZ803 DDZ6R2BM— DIODE ZENER DZ6.2BM DZ804 DDZ6R2BM— DIODE ZENER DZ6.2BM DZ805...
  • Page 54 PART-CODE PART-NAME PART-DESC L502 5MC0000027 COIL CHOKE L-60 ( 60 UH ) L991 5CPZ228K02 COIL PEAKING 0.22UH K(AXIAL 3.5MM) L993 5CPZ228K02 COIL PEAKING 0.22UH K(AXIAL 3.5MM) L995 5CPZ228K02 COIL PEAKING 0.22UH K(AXIAL 3.5MM) LF001 5PDLF403— FILTER LINE DLF-403 9977410800 TERMINAL PIN BSP1(SN) L=15MM 9977410800 TERMINAL PIN...
  • Page 55 PART-CODE PART-NAME PART-DESC Q221 T2SA1371— 2SA1371 Q222 TZTC3198Y- KTC3198Y-(1815Y) (AUTO) Q223 TZTC3198Y- KTC3198Y-(1815Y) (AUTO) Q228 T2SA1371— 2SA1371 Q229 T2SA1371— 2SA1371 Q231 TZTC3198Y- KTC3198Y-(1815Y) (AUTO) Q232 TZTA1266Y- KTA1266Y- (AUTO)(1015Y) Q241 TZTA1270Y- KTA1270Y(AUTO)(562Y) Q242 TZTC3198Y- KTC3198Y-(1815Y) (AUTO) Q243 T2SC4634— 2SC4634 Q244 T2SC4634— 2SC4634 Q301 TZTC3198Y-...
  • Page 56 PART-CODE PART-NAME PART-DESC Q584 T1RF640—- IRF640 Q802 TZTC3198Y- KTC3198Y-(1815Y) (AUTO) Q803 T2SC2407A- 2SC2407A Q804 TZSC1009Y- KSC1009-Y (AUTO) Q805 TKSA910Y— KSA910Y Q807 TZSR1006— KSR1006 (AUTO) Q833 T2SC2407A- 2SC2407A Q834 TZSC1009Y- KSC1009-Y (AUTO) Q835 TKSA910Y— KSA910Y Q863 T2SC2407A- 2SC2407A Q864 TZSC1009Y- KSC1009-Y (AUTO) Q865 TKSA910Y—...
  • Page 57 PART-CODE PART-NAME PART-DESC R112 RD-AZ473J- R CARBON FILM 1/6 47K OHM J R115 RD-AZ103J- R CARBON FILM 1/6 10K OHM J R118 RS02Z339J- R M-OXIDE FILM 2W 3.3 OHM J R119 RS02Z339J- R M-OXIDE FILM 2W 3.3 OHM J R121 RS01Z471J- R M-OXIDE FILM 1W 470 OHM J (TAPPING)
  • Page 58 PART-CODE PART-NAME PART-DESC R172 HRFT471JCA R CHIP 1/10 470 OHM J 2012 R173 RD-2Z100JS R CARBON FILM 1/2 10 OHM J SMALL R174 HRFT103JCA R CHIP 1/10 10K OHM J 2012 R175 RS02Z229J- R M-OXIDE FILM 2W 2.2 OHM J(TAPPING) R181 RD-2Z224JS R CARBON FILM...
  • Page 59 PART-CODE PART-NAME PART-DESC R232 RD-AZ124J- R CARBON FILM 1/6 120K OHM J R233 HRFT563JCA R CHIP 1/10 56K OHM J 2012 R234 RD-AZ102J- R CARBON FILM 1/6 1K OHM J R235 RD-AZ104J- R CARBON FILM 1/6 100K OHM J R236 HRFT103JCA R CHIP 1/10 10K OHM J 2012...
  • Page 60 PART-CODE PART-NAME PART-DESC R318 HRFT472JCA R CHIP 1/10 4.7K OHM J 2012 R319 HRFT473JCA R CHIP 1/10 47K OHM J 2012 R321 HRFT333JCA R CHIP 1/10 33K OHM J 2012 R327 RD-AZ122J- R CARBON FILM 1/6 1.2K OHM J R328 RD-4Z151J- R CARBON FILM 1/4 150 OHM J...
  • Page 61 PART-CODE PART-NAME PART-DESC R401 RN-AZ1500F R METAL FILM 1/6W 150 OHM F R402 RN-4Z5621F R METAL FILM 1/4 5.62K OHM F R403 RD-4Z309J- R CARBON FILM 1/4 3 OHM J R404 RD-4Z309J- R CARBON FILM 1/4 3 OHM J R405 RS02Z101J- R M-OXIDE FILM 2W 100 OHM J (TAPPING)
  • Page 62 PART-CODE PART-NAME PART-DESC R531 RS02Z820J- R M-OXIDE FILM 2W 82 OHM J (TAPPING) R533 HRFT103JCA R CHIP 1/10 10K OHM J 2012 R534 RS01Z271J- R M-OXIDE FILM 1W 270 OHM J (TAPPING) R535 RD-AZ102J- R CARBON FILM 1/6 1K OHM J R536 HRFT472JCA R CHIP...
  • Page 63 PART-CODE PART-NAME PART-DESC R575 RD-2Z229JS R CARBON FILM 1/2 2.2 OHM J SMALL R576 HRFT103JCA R CHIP 1/10 10K OHM J 2012 R577 RD-AZ103J- R CARBON FILM 1/6 10K OHM J R580 HRFT102JCA R CHIP 1/10 1K OHM J 2012 R581 HRFT102JCA R CHIP...
  • Page 64 PART-CODE PART-NAME PART-DESC R820 RD-AZ513J- R CARBON FILM 1/6 51K OHM J R821 RD-AZ103J- R CARBON FILM 1/6 10K OHM J R822 RD-AZ203J- R CARBON FILM 1/6 20K OHM J R823 RD-AZ123J- R CARBON FILM 1/6 12K OHM J R824 RD-AZ123J- R CARBON FILM 1/6 12K OHM J...
  • Page 65 PART-CODE PART-NAME PART-DESC R862 RD-AZ750J- R CARBON FILM 1/6 75 OHM J R863 RD-AZ100J- R CARBON FILM 1/6 10 OHM J R864 RD-AZ220J- R CARBON FILM 1/6 22 OHM J R865 HRFT202JCA R CHIP 1/10 2K OHM J 2012 R866 RD-AZ221J- R CARBON FILM 1/6 220 OHM J...
  • Page 66 KPT-1115AM SW702 5S50101Z10 SW TACT KPT-1115AM SW703 5S50101Z10 SW TACT KPT-1115AM SW704 5S50101Z10 SW TACT KPT-1115AM T001 5RM0000091 TRANS SMPS DMT-901D T002 5RY0000005 TRANS SYNC DST-604 T151 5R50000004 TRANS BUCK DBT-402 T501 5RD0000038 TRANS DRIVE DDT-901 T502 5R50000003 TRANS BUCK...
  • Page 67 DAEWOO ELECTRONICS CO., LT D 686, AHYEON-DONG MAPOGU, SEOUL, KOREA. C.P.O. BOX 8003 SEOUL KOREA TELEX: DWELEC K28177-8 CABLE: "DAEWOOELEC" FAX: 02) 590-6291 TEL: 02) 360-7114/590-6151~5 http://www.dwe.daewoo.co.kr PRINTED DATE: DEC.1998...

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