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Summary of Contents for Daewoo 103FH
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Page 1: Service Manual
Service Manual XGA COLOR MONITOR Model : 103FH DAEWOO ELECTRONICS CO., LTD. http : //svc.dwe.co.kr November, 2000... -
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
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. -
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, 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. - Page 6 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.
- 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.
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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 107KHz, 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 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. •... - Page 12 Key Process ENGL SH DEUTSCH ESPAÑOL FRANCA S TAL ANO MENU Start • When you choose the icon on the OSD window, you can exit the OSD screen.
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Page 13: Osd Functions
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. - Page 14 ICON CONTROL FUNCTIONS Adjust the display width & height at the same time. ZOOM PINCUSHION Adjust the left and right margins for more convex or more concave margins. 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...
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Page 15: 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 16: 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 17 (l) Select the B - GAIN and adjust the key to get the color coordinates in Y=0.311±0.015. (m) Select the R - GAIN and adjust the key to get the color coordinates in X=0.281±0.015. (n) Adjust the ABL VR to get the screen luminosity up to 26Ft/L. (o) Check if the x,y coordinates of color analyzer is in x=0.281 ±...
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Page 18: Troubleshooting Hints
TROUBLESHOOTING HINTS 1. No Character No Character Are the Change the Contrast & Contrast & Brightness control value to Brightness Controls maximum maximum? Is whole Refer to No Raster screen bright? No Raster Is CRT Check the peripheral circuit Cathode (Rk, Gk, Bk) of CRT signal level Rk, Gk, Bk... - Page 19 2. No Raster No Raster Is Heater Is CRT Trouble in Voltage (CRT PCB) heater red-hot? about 6.3V? Trouble in Turn the Brightness Refer to trouble & Contrast control power supply in P.S.U fully Maximum circuit Is whole Trouble in video screen bright? circuit Check...
- Page 20 3. A missing Color One color is missing Is input signal Check video signal normal? cable or video card. 0.7Vpp Is the output of pre-amp Trouble in IC802 or its (IC802, M52742ASP) ambient circuit. pin 29, 32, 35 all normal? Is CRT Is video Trouble in...
- Page 21 4. Abnormal OSD Font Abnormal OSD Font * If menu key selected. Is menu Is the Trouble in key selected? Fast Blanking signal IC804 or its Is OSD Font normal? ambient circuit. exist? One color is Trouble in missing IC802 or its ambient circuit Is the Trouble in IC804...
- Page 22 5. Horizontal Output Circuit Trouble in Horizontal output circuit (No Raster) Is the B+ line voltage Refer to abnormal H.Size. normal? Is Q505 base waveform Trouble in Q505. 13Vpp normal? Is the Collector waveform of Trouble in Q504, T506. Q502 or Q503 12Vpp normal? 0.7V...
- Page 23 6. Unstable Picture 6-1. Horizontal Unstable picture Is the Trouble in IC501 pulse of pin26 of or its ambient circuits. the IC501 correct? 5Vpp Is the Check IC201 and its pulse of pin 42 of ambient circuits. the IC201 correct? 5Vpp Is the Check IC201 and its...
- Page 24 6-2. V.OSC/Deflection Circuit Unstable or Abnormal picture 1. Trouble in P.S.U. 2. Check the D108(-13Vdc), +17Vdc, -13Vdc line Q106(+17Vdc) and correct? their ambient circuit. 106KHz/85Hz the output 50Vpp V.DY waveform of IC401 failure. (pin 5) normal? 6Vpp 8Vpp Is the output pulse Trouble in IC401 or of IC501 (pin 8)
- Page 25 7. Focus Monitor remains unfocused Adjust finely Focus VR in focus acceptable? Trouble in Focus Refer to focus is poor. circuit (HVG)
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Page 26: Dynamic Focus
7-1. Dynamic Focus Focus is poor HITACHI : 450V 180V SAMSUNG : 370V 180V Is the 1. Check the CRT socket waveform of the or connector wire. DF pin in HVG (pin 1) 2. Trouble in HVG or CRT. correct? Is the 1. - Page 27 8. Convergence Poor convergence convergence Adjust static on the center area convergence bad? Refer to Adjustment procedure of convergence Adjust D.Y convergence on the Location fringe area bad?
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Page 28: Horizontal Size
9. Abnormal Picture 9-1. Horizontal Size *At first, adjust controls in the OSD MENU. Abnormal H. Size Is the changeable the B+ line voltage? Is the gate voltage 226V Trouble in D507, D520. of the Q521 correct? Is the waveform of the Check the Q520, D505 pin6 in IC505 and their ambient circuit. -
Page 29: Vertical Size
9-2. Vertical Size Abnormal V.Size Trouble in changeable the changeable the DC R401, C401. DC voltage of level of pin 8 of IC401 pin 1? the IC501? Check the IC501 and its ambient circuit the waveform of 106KHz/85Hz 1. Trouble in IC401. the pin5 of IC401 2. - Page 30 10. High Voltage Output Circuit Trouble in H.V output circuit Is VB+(+185Vdc), Refer to trouble in R.S.V. 12V lines correct? Is the voltage of the pin3 Trouble in R628, R629. (ON/OFF) in HVG ON level(1.5V~15V)? Check the EHT set (pin 4 in HVG) Is the EHT set : EHT(KV)
- Page 31 11. Side-Pincushion Circuit Side-Pincusion distortion is excessive or barrel When the side pincushion is selected on the OSD menu, is it adjusted at the acceptable position? Is the Check IC504 or waveform of pin9 in its ambient circuit. IC501correct ? Is the Check IC501 or waveform of pin28 in...
- Page 32 12. Power Supply Unit (P.S.U) Trouble in P.S.U power switch Switch on Check the power cord outlet fuse F001 and diode bridge D001. O.K? Is the TH001 OK? 1. Replace Q003. Is TR Q003 2. Replace TH001. Trouble in bridge diode voltage of T001 D001 or peripheral pin 1 130V...
- Page 33 Is voltage Trouble in D105. of C107 28Vdc? Is voltage of C111 Trouble in Q106, D106. 17Vdc? Is voltage Trouble in IC103. of C128 12Vdc? Is voltage of C118 Trouble in D108. -13Vdc? Is voltage Trouble in IC101. of C109 5Vdc? P.S.U O.K...
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Page 34: Block Diagram
BLOCK DIAGRAM... -
Page 35: Pcb Layout
PCB LAYOUT Main PCB Component Side... - Page 36 Main PCB Solder Side...
- Page 37 Video PCB Component Side...
- Page 38 Video PCB Solder Side...
- Page 39 Control PCB Component Side Control PCB Solder Side...
- Page 40 Socket PCB Component Side Socket PCB Solder Side...
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Page 41: Schematic Diagram
SCHEMATIC DIAGRAM Power & PFC Circuit... - Page 42 MCU OSD Key Deflection Dynamic Circuit...
- Page 43 Deflection & H/V Circuit...
- Page 44 Video & Vertical & Convergence & Tilt Circuit...
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Page 45: Exploded View & Mechanical Parts List
EXPLODED VIEW & MECHANICAL PARTS LIST... -
Page 46: 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 Tolerance ± 1% ± 5% ± 10% ±... -
Page 47: 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 00020 9979500017 RECEPTACLE 03GEEG3B-SL/FILTER EMI BD806 5PB13857-- COIL BEAD BI3857(AXIAL) - Page 48 PART-CODE PART-NAME PART-DESC PART-CODE PART-NAME PART-DESC C124 CMXM2A104J C MYLAR 100V 0.1MF J (TP) C250 HCBK104KCA C CHIP CERA 50V X7R 0.1MF K 2012 C125 CEXF1C101C C ELECTRO 16V RUS 100MF (6.3X11) TP C301 HCBK104KCA C CHIP CERA 50V X7R 0.1MF K 2012 C127 HCBK104KCA C CHIP CERA 50V X7R 0.1MF K 2012 C302 HCBK104KCA C CHIP CERA...
- Page 49 PART-CODE PART-NAME PART-DESC PART-CODE PART-NAME PART-DESC C516 CEXF1C471C C ELECTRO 16V RUS 470MF (10X12.5)TP C569 CMYA2G124J C MYLAR MPA 400V 0.12MF J BULK C517 HCQK102JCA C CHIP CERA 50V CH 1000PF J 2012 C570 CMXF2G104J C MYLAR MPP 400V 0.1MF J C518 CEXE1H229C C ELECTRO 50V RU 2.2MF (5X11) TP C571 HCBK104KCA C CHIP CERA...
- Page 50 PART-CODE PART-NAME PART-DESC PART-CODE PART-NAME PART-DESC C803 HCBK103KCA C CHIP CERA 50V X7R 0.01MF K 2012 C845 HCQK220JCA C CHIP CERA 50V CH 22PF J 2012 C8031 HCBK103KCA C CHIP CERA 50V X7R 0.01MF K 2012 C846 CEXD2A109F C ELECTRO 100V RND 1MF(5*11) TP C8032 CEXF1C221C C ELECTRO 16V RUS 220MF (8X11.5) TP...
- Page 51 PART-CODE PART-NAME PART-DESC PART-CODE PART-NAME PART-DESC C903 HCQK221JCA C CHIP CERA 50V CH 220PF J 2012 D202 DZN4148--- DIODE 1N4148 AUTO 52MM C991 CCXE3D103P C CERA HIKE 2KV 0.01MF P D203 DZN4148--- DIODE 1N4148 AUTO 52MM C992 CCXB2H102K C CERA 500V B 1000PF K (TAPPING) D204 DZN4148--- DIODE...
- Page 52 PART-CODE PART-NAME PART-DESC PART-CODE PART-NAME PART-DESC D809 DZN4148--- DIODE 1N4148 AUTO 52MM EF104 5PF1FH104M FILTER LC CFI-06-F-1H-104M D810 D1NS4----- DIODE 1NS4 EF201 5PF1FH104M FILTER LC CFI-06-F-1H-104M D811 DZN4148--- DIODE 1N4148 AUTO 52MM EF202 5PF1FH104M FILTER LC CFI-06-F-1H-104M D812 DZN4148--- DIODE 1N4148 AUTO 52MM EF203 5PF1FH104M FILTER LC CFI-06-F-1H-104M...
- Page 53 PART-CODE PART-NAME PART-DESC PART-CODE PART-NAME PART-DESC Q001 T2SK2676-- 2SK2676 Q801 TBFQ221--- BFQ221 Q002 TKST2222A- TR CHIP KST2222A Q802 TZSC1009Y- KSC1009-Y (AUTO) Q003 TKSC2688-Y KSC2688-Y Q803 TKSA910Y-- KSA910Y Q101 TKST2222A- TR CHIP KST2222A Q804 TKSR1102-- TR CHIP KSR1102 Q104 TKTA1281Y- KTA1281Y Q805 TKST2222A- TR CHIP KST2222A...
- Page 54 PART-CODE PART-NAME PART-DESC PART-CODE PART-NAME PART-DESC R118 HRFT561JCA R CHIP 1/10 560 OHM J 2012 R235 RD-4Z151J- R CARBON FILM 1/4 150 OHM J R119 RD-4Z331J- R CARBON FILM 1/4 330 OHM J R239 HRFT102JCA R CHIP 1/10 1K OHM J 2012 R121 HRFT822JCA R CHIP 1/10 8.2K OHM J 2012 R240 HRFT103JCA R CHIP...
- Page 55 PART-CODE PART-NAME PART-DESC PART-CODE PART-NAME PART-DESC R502 RD-AZ101J- R CARBON FILM 1/6 100 OHM J R556 HRFT104JCA R CHIP 1/10 100K OHM J 2012 R503 RD-AZ101J- R CARBON FILM 1/6 100 OHM J R557 RS01Z154J- R M-OXIDE FILM 1W 150K OHM J(TAPPING) R504 RD-AZ102J- R CARBON FILM 1/6 1K OHM J...
- Page 56 PART-CODE PART-NAME PART-DESC PART-CODE PART-NAME PART-DESC R611 RD-2Z474J- R CARBON FILM 1/2 470K OHM J R803 RD-AZ220J- R CARBON FILM 1/6 22 OHM J R612 RD-4Z100J- R CARBON FILM 1/4 10 OHM J R804 RN-AZ7509F R METAL FILM 1/6 75.0 OHM F R613 RS02Z200J- R M-OXIDE FILM 2W 20 OHM J (TAPPING)
- Page 57 1/10 82K OHM J 2012 SW706 5S50101Z10 SW TACT KPT-1115AM R888 HRFT303JCA R CHIP 1/10 30K OHM J 2012 T001 5RM0000105 TRANS SMPS DMT-103FH R889 RD-AZ474J- R CARBON FILM 1/6 470K OHM J T002 5RY0000003 TRANS SYNC DST-602 R891 RD-4Z513J-...
- Page 58 DAEWOO ELECTRONICS CO., LTD 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX : DWELEC K28177-8 CABLE : "DAEWOOELEC" E-mail : G7F00E@web.dwe.co.kr TEL : 82-32-510-7620 FAX : 82-32-510-7630...