Daewoo 710B Service Manual Download

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Service Manual

XGA COLOR MONITOR

Model : 710B

DAEWOO ELECTRONICS CO., LTD
OVERSEAS SERVICE DEPT.

Summary of Contents for 710B

Page 1: ...ServiceManual XGA COLOR MONITOR Model 710B DAEWOO ELECTRONICS CO LTD OVERSEAS SERVICE DEPT...

Page 2: ...RMATION 6 GENERAL INFORMATION 7 PIN CONNECTOR 8 CAUTIONS FOR ADJUSTMENT AND REPAIR 8 OPERATION ADJUSTMENT 9 TROUBLESHOOTING HINTS 15 ALIGNMENT PROCEDURE 31 BLOCK DIAGRAM 33 PCB LAYOUT 34 SCHEMATIC DIA...

Page 3: ...cal 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 E...

Page 4: ...mage 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 indicat...

Page 5: ...the contacts with a pipe cleaner cotton tipped stick or comparable nonabrasive applicator 10 by volume Acetone and 90 by volume isopropyl alcohol 90 99 strength 6 Do not defeat any plug socket B volta...

Page 6: ...together by conductive foam aluminum foil or comparable conductive material 7 Immediately before removing the protective material from the leads of a replacement ES device touch the protective materi...

Page 7: ...n anti static suction type solder removal device or with desoldering braid before removing the IC Replacement 1 Carefully insert the replacement IC in the circuit board 2 Carefully bend each IC lead a...

Page 8: ...er side If they are not shiny reheat them and apply additional solder if necessary TECHNICAL INFORMATION Picture Tube Type 17 inch Flat Square Tube type 16 2 inch viewing area Dot Pitch 0 28mm Face Tr...

Page 9: ...r VGA VESA and XGA and Apple Macintosh Video Card And so this color monitor has a maximum horizontal resolution of 1280 dots and a maximum vertical resolution of 1024 lines for superior clarity of dis...

Page 10: ...only electrical specification or function Reform the leadwire after any repair work Caution For Servicing In case of servicing or replacing CRT high voltage sometimes remains in the anode of the CRT C...

Page 11: ...OPERATION ADJUSTMENT 9 ADJUSTMENT KEY Launch OSD On Screen Display menus Select the next function Increase the value of any selected function Decrease the value of any selected function...

Page 12: ...icon on the OSD window you can exit the OSD screen BRIGHTNESS 50 TRAPEZOID 50 COLOR TEMP K 9300 6550 RED GAIN K 50 RECALL YES Z Z Z NO CONTRAST 50 PINCUSHION 50 STATUS H 31 5KHZ V 70 5 HZ Z Z Z R G B...

Page 13: ...ce between light and dark areas on the screen Range 0 100 Adjust the brightness of the entire display Adjust the position of the display horizontally left or right Adjust the display width horizontal...

Page 14: ...outward Image turns to by Image turns to by Adjust parallelogram when the screen is leaning left or right Image turns to by Image turns to by Adjust the side balance when the sides of the screen are b...

Page 15: ...ures 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 Display horizontal vertic...

Page 16: ...or is on DPMS mode Out of Range screen is displayed when the applied frequency is under or over normal range Normal range H 30 69 KHz V 50 160 Hz When the monitor doesn t display if you press any key...

Page 17: ...heir ambient circuit Trouble in 12V DC line of the Main PWB Check the clamping pulse circuit Check the signal cable No Character Is whole screen bright Yes Yes Yes Yes Yes No No No No No Yes Yes Rk Gk...

Page 18: ...S U Refer to trouble in power supply unit Is CRT heater red hot No No No No No No No Yes Yes Yes Yes Yes Yes Yes Yes Is Heater Voltage CRT PWB about 6V Turn the Brightness Contrast control to set Maxi...

Page 19: ...G1 G2 voltage normal Is the output of pre amp IC801 KA2500 pin 21 24 26 all normal Check video signal cable or video card Trouble in IC801 or its ambient circuit Trouble in video output circuit IC803...

Page 20: ...Voltage CRT PWB about 6V Abnormal OSD Font Is the output of IC802 pin 13 14 15 normal Trouble in Heater voltage line Refer to trouble in P S U Troubie in IC802 or its ambient circuit Trouble in IC802...

Page 21: ...n of IC501 Check Q603 and its ambient circuit Trouble in IC501 Trouble in Horizontal output circuit No Raster Yes No Is the Collector wave form of Q501 or Q502 normal Yes Yes Yes Trouble in Q503 and i...

Page 22: ...Picture 6 1 Horizontal Unstable picture Is H Sync input pin of IC501 correct Check H Sync Out of Micom or its ambient circuits Is the pin 3 of IC501 5V Check the value of C503 R502 Yes Yes No No Trou...

Page 23: ...Is 13V DC line correct Trouble in power supply unit No Yes Is the output waveform of IC401 pin 6 normal V DY failure Trouble in V Sync line or IC501 failure Yes No 45Vp p Is the output pulse of IC501...

Page 24: ...22 7 Focus Monitor remains unfocused Check Focus VR in FBT Is focus acceptable Trouble in Focus circuit FBT Yes OK No...

Page 25: ...n 3 of FBT 2 Check D575 1 Check the 12V DC line 2 Check Q751 D755 Check after adjusting the static focus finely by VR in FBT DF waveform FVH FVH FVV FVV No Is the base voltage of the Q751 about 2 6V Y...

Page 26: ...onvergence Is convergence on the center area bad Is convergence on the fringe area bad Adjust static convergence Refer to Adjustment procedure of convergence Yes Adjust D Y Location Yes No Poor conver...

Page 27: ...size changed No Yes Check pin 15 of IC501 and its ambient circuit D604 R605 R606 R607 It isn t out of order Isthe H Sizeabout295mm atVGAmodeandMin H Size inOSDMenu No Yes 1 Check B section of TDA9109...

Page 28: ...DC voltage of IC401 pin 1 Check the IC401 and its ambient circuit Check the IC501 and its ambient circuit No No Trouble V OSC Deflection Circuit Refer to V OSC Deflection circuit Yes Is the 3 5Vdc of...

Page 29: ...ble in Q571 Is Q501 emitter waveform normal Yes No Trouble in Q501 Q502 Is IC501 pin 26 waveform normal Yes No Trouble in power supply Is IC501 pin 29 voltage about 12V No No Trouble in IC501 ambient...

Page 30: ...O K Select the side pincushion icon on OSD menu and adjust acceptable position Yes Check IC501 or their ambient circuit pin 14 15 16 Is the pin 24 waveform of IC501 correct Yes No Check IC501 or it s...

Page 31: ...t No Is voltage of T001 pin 6 130V 370V Trouble in D001 D002 D003 D004 C004 and TH001 No Is the waveform of IC001 pin 1correct 400Vpp 620Vpp Trouble in T001 IC001 IC101 PH001 and D005 etc No Trouble i...

Page 32: ...voltage of C106 8 7V DC Trouble in D106 or Q103 No Is voltage of C104 13V DC No Yes Yes Yes Is voltage of C105 13V DC Trouble in D105 or vertical Part P S U O K Trouble in D104 IC102 or horizontal Par...

Page 33: ...ontrol to center and contrast control to MAX b Receive all H character pattern of 60KHz mode signal c Adjust the Focus control of FBT to obtain best Focus static focus and Dynamic focus 4 Geometric Di...

Page 34: ...ition c Vertical red and blue lines are converged by varying the angle between the two tabs of the 4 pole magnets d Horizontal red and blue lines are converged by varying the tabs together keeping the...

Page 35: ...L SDA OSD VIDEO PREAMP EEPROM 24C08B TILT IC L272M V DRV AMP V DY VIDEO OUTPUT LM2407T BIAS CONTROL H VTG SCREEN FOCUS FBT CF1147DW2300 KA2142 H OSC V DRV TDA9109 SMPS TRANS H DRV H DY H VTG B CONTROL...

Page 36: ...34 PCB LAYOUT Main PCB Component Side...

Page 37: ...Main PCB Solder Side 35...

Page 38: ...36 Video PCB Component Side Video PCB Solder Side...

Page 39: ......

Page 40: ...EXPLODED VIEW DIAGRAM 38...

Page 41: ...ntified with the International Symbol have special characteristics important for safety When replacing any components use only manufacturer s specified parts Abbreviation of Description REPLACEMENT PA...

Page 42: ...J C MYLAR MPP 200V 0 82MF J C578 CMXM2A224J C MYLAR 100V 0 22MF J DL001 DLT2462A2D LED LT2462 A2 D51 D102 DS3L60 DIODE S3L60 D103 DS3L60 DIODE S3L60 D104 DS3L60 DIODE S3L60 F001 5F3CB3122L FUSE CERA S...

Page 43: ...0 PCMPJ1J046 PCB SMD AS CMC 710B C015 HCFK104ZCA C CHIP CERA 50V Y5V 0 1MF Z 2012 C117 HCFK104ZCA C CHIP CERA 50V Y5V 0 1MF Z 2012 C119 HCQK101JCA C CHIP CERA 50V CH 100PF J 2012 C120 HCQK101JCA C CHI...

Page 44: ...A C CHIP CERA 50V CH 22PF J 2012 R117 HRFT272JCA R CHIP 1 10 2 7K OHM J 2012 R205 HRFT472JCA R CHIP 1 10 4 7K OHM J 2012 R208 HRFT000JCA R CHIP 1 10 0 OHM J 2012 R209 HRFT472JCA R CHIP 1 10 4 7K OHM J...

Page 45: ...OHM J 2012 R887 HRFT561JCA R CHIP 1 10 560 OHM J 2012 R888 HRFT182JCA R CHIP 1 10 1 8K OHM J 2012 R889 HRFT101JCA R CHIP 1 10 100 OHM J 2012 R890 HRFT472JCA R CHIP 1 10 4 7K OHM J 2012 R936 HRFT244JC...

Page 46: ...05 D002 D2A05 DIODE 2A05 D003 D2A05 DIODE 2A05 D004 D2A05 DIODE 2A05 D005 D1N4937GP DIODE 1N4937GP TAPPING D006 DHER107 DIODE HER107 D101 DRU1P DIODE RU 1P TAPPING D105 DHER107 DIODE HER107 D106 DHER1...

Page 47: ...529 RS01Z159J R M OXIDE FILM 1W 1 5 OHM J TAPPING R532 RS01Z101J R M OXIDE FILM 1W 100 OHM J TAPPING R554 RS01Z471J R M OXIDE FILM 1W 470 OHM J TAPPING R573 RS01Z470J R M OXIDE FILM 1W 47 OHM J TAPPIN...

Page 48: ...C267 CEXD1H220F C ELECTRO 50V RND 22MF 10 11 5 C271 CEXF1H100V C ELECTRO 50V RSS 10MF 5X11 TP C276 CEXF1H100V C ELECTRO 50V RSS 10MF 5X11 TP C277 CEXF1H100V C ELECTRO 50V RSS 10MF 5X11 TP C278 CEXF1H1...

Page 49: ...S 10MF 5X11 TP C591 CMXM2A104J C MYLAR 100V 0 1MF J TP C593 CEXF1H339V C ELECTRO 50V RSS 3 3MF 5X11 TP C601 CEXF1H109V C ELECTRO 50V RSS 1MF 5X11 TP C603 CCXB2H102K C CERA 500V B 1000PF K TAPPING C606...

Page 50: ...KSD471ACY Q601 TKSA539CY TR KSA539CY Q602 TKSD471ACY TR KSD471ACY Q751 TKSP45 TR KSP45 Q752 TKSP92 TR KSP92 Q753 TKSP92 TR KSP92 Q754 TKSP45 TR KSP45 Q755 TKSP45 TR KSP45 Q756 TKSP45 TR KSP45 Q871 TZ...

Page 51: ...1 CCZB1H102K C CERA 50V B 1000PF K C994 CCZF1H104Z C CERA 50V HIKF 0 1MF Z C995 CCZF1H104Z C CERA 50V HIKF 0 1MF Z C997 CCZB1H152K C CERA 50V B 1500PF K AXIAL C999 CCZF1H104Z C CERA 50V HIKF 0 1MF Z D...

Page 52: ...52MM D902 DZN4148 DIODE 1N4148 AUTO 52MM D912 DZN4148 DIODE 1N4148 AUTO 52MM J411 RD AZ101J R CARBON FILM 1 6 100 OHM J L881 5CPZ101K02 COIL PEAKING 100UH K AXIAL 3 5MM R001 RD 2Z105J R CARBON FILM 1...

Page 53: ...M 1 6 1 2K OHM J R294 RD AZ563J R CARBON FILM 1 6 56K OHM J R295 RD AZ331J R CARBON FILM 1 6 330 OHM J R296 RD AZ331J R CARBON FILM 1 6 330 OHM J R401 RD AZ102J R CARBON FILM 1 6 1K OHM J R402 RD AZ10...

Page 54: ...CARBON FILM 1 6 4 7K OHM J R561 RD AZ472J R CARBON FILM 1 6 4 7K OHM J R562 RD AZ472J R CARBON FILM 1 6 4 7K OHM J R571 RD 4Z471J R CARBON FILM 1 4 470 OHM J R572 RD AZ102J R CARBON FILM 1 6 1K OHM J...

Page 55: ...ARBON FILM 1 6 150K OHM J R903 RD AZ623J R CARBON FILM 1 6 62K OHM J R904 RD AZ472J R CARBON FILM 1 6 4 7K OHM J R905 RD AZ752J R CARBON FILM 1 6 7 5K OHM J R906 RD AZ204J R CARBON FILM 1 6 200K OHM J...

Page 56: ...G0D00104 SPARK GAP S 23 1 5KV 40010 PCCTJRJ046 PCB CRT RADIAL AS CMC 710B C805 CEXD1H109F C ELECTRO 50V RND 1MF 5X11 TP C806 CMXM2A222J C MYLAR 100V 2200PF J TP C807 CMXM2A333J C MYLAR 100V 0 033MF J...

Page 57: ...3 5MM L831 5CPZ568K02 COIL PEAKING 0 56UH K AXIAL 3 5MM L861 5CPZ568K02 COIL PEAKING 0 56UH K AXIAL 3 5MM R804 RD 4Z271J R CARBON FILM 1 4 270 OHM J R805 RD 4Z101J R CARBON FILM 1 4 100 OHM J R807 RC...

Page 58: ...1 6 68K OHM J R870 RD AZ224J R CARBON FILM 1 6 220K OHM J R871 RD AZ154J R CARBON FILM 1 6 150K OHM J R872 RD AZ474J R CARBON FILM 1 6 470K OHM J R882 RD 2Z104J R CARBON FILM 1 2 100K OHM J R891 RD 4Z...

Page 59: ...DAEWOO ELECTRONICS CO LTD OVERSEAS SERVICE DEPT DAEWOO ELECTRONICS CO LTD 686 AHYEON DONG MAPOGU SEOUL KOREA C P O BOX 8003 SEOUL KOREA TELEX DWELEC K28177 8 CABLE DAEWOOELEC http www dwe co kr PRINTE...

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