Daewoo L700C Service Manual Download

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DAEWOO ELECTRONICS CO., LTD.

http : //svc.dwe.co.kr

Service Manual

XGA COLOR MONITOR

Model :

L700C/L700CM
L701C/L701CM

L700CAV

Sept, 2002

http://www.wjel.net

Summary of Contents for L700C

Page 1: ...DAEWOO ELECTRONICS CO LTD http svc dwe co kr Service Manual XGA COLOR MONITOR Model L700C L700CM L701C L701CM L700CAV Sept 2002 h t t p w w w w j e l n e t...

Page 2: ...http scwj 8800 org http wjbbs mpc cn h t t p w w w w j e l...

Page 3: ...90 by volume isopropyl alchohol 90 99 strength 5 Do not apply AC power to this instrument and or any other of its electrical assemblies unless all the solid state device heat sinks are correctly inst...

Page 4: ...ted together by conductive foam aluminum foil or comparable conductive material 7 Immediately before removing the protective material from the leads of replacement ES devices touch the protective mate...

Page 5: ...refully bend each IC lead against the circuit foil pad and solder it 3 Clean the soldered areas with a small wire bristle brush lt is not necessary to reapply acrylic coating to the area Small Signal...

Page 6: ...only Plug and Play VESA DDC Compatible Power Source 100 240Vac 50 60Hz Free Voltage Power Consumption 45W without speaker Dimension W x H x D 420 x 398 x 194mm with stand without speaker 420 x 360 x 6...

Page 7: ...of 1280 dots and a maximum vertical resolution of 1024 lines for superior clarity of display By accepting analog signal inputs which level is zero to 0 7 Volts This TFT LCD monitor can display 16 7M c...

Page 8: ...e adjustment procedure described in the service manual is made by a visual check Allow 20 minutes warm up time for the display before checking or adjusting only electrical specification or function Re...

Page 9: ...es the value of any selected function 3 4 moves cursor to the left or high window in the OSD window and decreases value of any selected function SELECT EXIT AUTO 5 8 7 moves from top menu to sub menu...

Page 10: ...splay performance fit for a current mode When there is no OSD if you press this BRIGHTNESS button you can adjust the brightness directly decreases brightness increases brightness OSD OFF MENU EXIT EXI...

Page 11: ...ves cursor to the left or high window in the OSD window and decreases value of any selected function MENU EXIT AUTO SELECT BRIGHTNESS 1 3 4 5 6 7 8 2 SELECT EXIT AUTO 5 8 7 moves from top menu to sub...

Page 12: ...there is no OSD if you press this BRIGHTNESS button you can adjust the brightness directly decreases brightness increases brightness AUTO TRACKING AUTO BRIGHTNESS Key Process HOT KEY OSD OFF OSD OSD...

Page 13: ...moves cursor to the left or high window in the OSD window and decreases value of any selected function moves from top menu to sub menu in the OSD window and opens the function window for the selected...

Page 14: ...there is no OSD if you press this BRIGHTNESS button you can adjust the brightness directly decreases brightness increases brightness Key Process HOT KEY OSD OFF MENU EXIT EXIT EXIT OSD OSD SHARPNESS...

Page 15: ...ze proper Is the noise displayed on the screen Perform the AUTO TRACKING Is the noise displayed on the screen yet Is the noise displayed on the screen yet Adjust the CLOCK FINE until the screen is cle...

Page 16: ...or down H CENTER V CENTER Choose different preset color temperatures or set your own customized color parameters Adjust the width horizontal size of the screen image Sharpen the focus by aligning the...

Page 17: ...by aligning the illuminated pixels and adjust until the screen image looks focused crisp and sharp Adjusting the CLOCK FINE after the CLOCK adjustment will produce a clear screen Adjust the green col...

Page 18: ...OSITION OSD Reset the screen to the Factory Preset Display Settings RECALL Choose automatically the proper horizontal position and vertical position size of the screen image AUTO POSITION Display hori...

Page 19: ...or decrease audio volume 19 OSD FUNCTIONS WITH USING VIDEO SOUND Adjust saturation of image SATURATION Adjust the hues of image HUE Adjust the display image quality if the screen proceed to scaling u...

Page 20: ...gnal screen is displayed when the D Sub signal connector is not connected or the status of the monitor is on DPMS mode Out of Range screen is displayed when the applied frequency is under or over norm...

Page 21: ...Sharpness set to 53 2 Contrast set to 92 3 Brightness set to 50 4 Switching to factory alignment mode Press power key with Brightness left key at the power off status 5 Video level adjustment Receive...

Page 22: ...M 1 Abnormal mode detect Is a input H sync of ADC pin 40 U13 correct Abnormal mode detect No No Yes Yes Is waveform of pin 81 of ADC U13 correct Trouble in the H sync input circuit Trouble in ADC Trou...

Page 23: ...ck the power board 5VS of CON2 Check on Scaler U9 Is the Power LED toggled between on and off Off No Yes On Is the power cord well connected Refer to No video or No raster Check if the power switch is...

Page 24: ...A power board No No Yes Yes Is the output of inverter correct Check the output of D811 power board Replace the inverter Replace a LCD panal 2 5 2 5 Check the output of Q4 or pin 41 of U6 Trouble in Q5...

Page 25: ...ler No Yes Is the input signal normal Check the video signal cable or R G B con ass y Trouble in the soldering of R G B data lines from output of ADC to Scaler U9 Yes No Yes Are the R G B Digital valu...

Page 26: ...ge No Yes Connection trouble Check interface to com of scalier pin 71 78 and solding of CON7 No Yes Is pin 5 6 7 8 of Q5 5V Check Q5 its ambient circuit and pin 42 of U6 Check if the CON7 wafer is wel...

Page 27: ...ut of ADC correct No Yes Is the input of ADC correct Check the video input signal Replace the main board or replace ADC Yes Check If the CON 7 wafer is well connected at the LCD panel No Yes Is the ou...

Page 28: ...N2A Check the main board Is the power cord well connected Check if the power cord is correctly connected Is the output of D812 6 2V on power board Yes Check ambient circuit of IC801 on power board No...

Page 29: ...ce Is a input H sync of ADC pin 40 U13 correct Abnormal mode detect No No Yes Yes Is waveform of clock of ADC pin81 U13 correct Trouble in the H sync input circuit Trouble in ADC Trouble in Scaler U9...

Page 30: ...AV Source Is a input signal of Decoder pin 10 at CVBS or pin 14 18 at S Video of U5 Abnormal mode detect No No Yes Is clock of Decoder pin 94 U5 27MHz Check CON 4 and I O Board Trouble in decoder U5 T...

Page 31: ...ck the power board 5VS of CON2 Check on Scaler U9 Is the Power LED toggled between on and off Off No Yes On Is the power cord well connected Refer to No video or No raster Check if the power switch is...

Page 32: ...A power board No No Yes Yes Is the output of inverter correct Check the output of D811 power board Replace the inverter Replace a LCD panal 2 5 2 5 Check the output of Q4 or pin 41 of U6 Trouble in Q5...

Page 33: ...of Scaler No Yes Is the input signal normal Check the video signal cable or R G B con ass y Trouble in the soldering of R G B data lines from output of ADC to Scaler U9 Yes No Yes Are the R G B Digit...

Page 34: ...ge No Yes Connection trouble Check interface to com of scalier pin 71 78 and solding of CON7 No Yes Is pin 5 6 7 8 of Q5 5V Check Q5 its ambient circuit and pin 42 of U6 Check if the CON7 wafer is wel...

Page 35: ...rect No Yes Is the input of ADC correct Check the video input signal Replace the main board or replace ADC Yes Check If the CON 7 wafer is well connected at the LCD panel No Yes Is the output of Scale...

Page 36: ...utput of Decoder U5 correct No Yes Is the input of Decoder U5 correct Check the video input signal or check the CON 4 Replace the main board or replace Decoder U5 Yes Check If the CON 7 wafer is well...

Page 37: ...N2A Check the main board Is the power cord well connected Check if the power cord is correctly connected Is the output of D812 6 2V on power board Yes Check ambient circuit of IC801 on power board No...

Page 38: ...D pin2 of Audio IC IC 601 9V Check Audio in jack CN 11 Check speaker No Yes Is Audio out OK No Is input of 9V regulator IC 602 12V Change 9V Regulator IC 602 Check power board Are SCL pin 28 SDA pin 2...

Page 39: ...VIDEO OPTION R 8 G 8 B 8 AUDIO PROCESSOR OPTION AUDIO OUT I2C 5 V H V SYNC DOT CLOCK AC INLET 100 240V 12V AC IN AD C ON OFF TMDS ON OFF DECODER ON OFF Hsync Pixel CLK 74ACT14 Sync Buffer Hsync I2C I...

Page 40: ...40 VGA Analog Input Section SCHEMATIC DIAGRAM h t t p w w w w j e l n e t...

Page 41: ...DTF Connection TMDS Section 41 h t t p w w w w j e l n e t...

Page 42: ...Damping Networks Section 42 h t t p w w w w j e l n e t...

Page 43: ...NTSL PAL Decoder Section 43 h t t p w w w w j e l n e t...

Page 44: ...Mysonweltrend Microcontroller Section 44 h t t p w w w w j e l n e t...

Page 45: ...ASI 311 Section 45 h t t p w w w w j e l n e t...

Page 46: ...ASI 311 Decoupling Caps Section 46 h t t p w w w w j e l n e t...

Page 47: ...LCD Panel Interface Section 47 h t t p w w w w j e l n e t...

Page 48: ...Power Distribution Section 48 h t t p w w w w j e l n e t...

Page 49: ...Audio Interface Section 49 h t t p w w w w j e l n e t...

Page 50: ...Analog ADC AD9884A 140 Section 50 h t t p w w w w j e l n e t...

Page 51: ...EXPLODED VIEW MECHANICAL PARTS LIST 51 h t t p w w w w j e l n e t...

Page 52: ...K 10 P 100 0 Z 80 Fig Part No Description Index R101 Resistors RD 4Z820J Carbon 82J R30 HRFS472JBA Chip 4 7K OHM J Tolerance F 1 J 5 K 10 M 20 G 2 Important Safety Notice Components identified with th...

Page 53: ...00C L700CM 4 C1 HCFK104ZBA C CHIP CERA 50V Y5V 0 1MF Z 1608 4 C10 HCFH473ZBA C CHIP CERA 25V Y5V 0 047MF Z 1608 4 C101 HCEKF100MC C CHIP ELECTRO MV 16V 10MF D4 0XH5 2 4 C102 HCFK104ZBA C CHIP CERA 50V...

Page 54: ...ZBA C CHIP CERA 50V Y5V 0 1MF Z 1608 4 C153 HCFK104ZBA C CHIP CERA 50V Y5V 0 1MF Z 1608 4 C154 HCEKF100MC C CHIP ELECTRO MV 16V 10MF D4 0XH5 2 4 C155 HCFK104ZBA C CHIP CERA 50V Y5V 0 1MF Z 1608 4 C157...

Page 55: ...A 50V Y5V 0 1MF Z 1608 4 C35 HCFK104ZBA C CHIP CERA 50V Y5V 0 1MF Z 1608 4 C36 HCFK104ZBA C CHIP CERA 50V Y5V 0 1MF Z 1608 4 C37 HCFK104ZBA C CHIP CERA 50V Y5V 0 1MF Z 1608 4 C39 HCFK104ZBA C CHIP CER...

Page 56: ...1608 4 R105 HRFS102JBA R CHIP 1 16 1K OHM J 1608 4 R106 HRFS101JBA R CHIP 1 16 100 OHM J 1608 4 R107 HRFS101JBA R CHIP 1 16 100 OHM J 1608 4 R108 HRFS472JBA R CHIP 1 16 4 7K OHM J 1608 4 R109 HRFS472...

Page 57: ...HM J 1608 4 R73 HRFS472JBA R CHIP 1 16 4 7K OHM J 1608 4 R74 HRFS472JBA R CHIP 1 16 4 7K OHM J 1608 4 R75 HRFS472JBA R CHIP 1 16 4 7K OHM J 1608 4 R76 HRFS472JBA R CHIP 1 16 4 7K OHM J 1608 4 R77 HRFS...

Page 58: ...WC08 IC EEPROM CAT24WC08 J 4 U9 1AS1311 IC LCD CONTROLLER AS1311 4 Y3 5XS14R318F CRYSTAL QUARTZ HC 49 SM5H 14 318MHZ 18PF 2 Z2030 PCPLSWJ184 PCB CONTROL AS CML 700CAV 3 CN901 9970760050 CONN AS SMH200...

Page 59: ...0 9974116800 FRAME E G I T 0 8 3 YFR20 7173300611 SCREW TAPPTITE TT2 BIN 3X6 MFZN 3 Z4010 PCSMJ0J189 PCB POWER ODD AS CML 700C 4 C835 CEXF1E102D C ELECTRO 25V RMU 1000MF 10 20 4 C838 CEXF1C471V C ELEC...

Page 60: ...AWG22 1 0 65 TIN COATING 6 J838 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 6 J839 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 6 J841 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 6 J842 858...

Page 61: ...52MM 5 D606 DZN4148 DIODE 1N4148 AUTO 52MM 5 D607 DZN4148 DIODE 1N4148 AUTO 52MM 5 D608 DZN4148 DIODE 1N4148 AUTO 52MM 5 DZ602 DDZ5R1B DIODE ZENER DZ 5 1B 5 DZ603 DDZ5R1B DIODE ZENER DZ 5 1B 5 DZ604...

Page 62: ...4 C1 HCFK104ZBA C CHIP CERA 50V Y5V 0 1MF Z 1608 4 C10 HCFH473ZBA C CHIP CERA 25V Y5V 0 047MF Z 1608 4 C100 HCFH473ZBA C CHIP CERA 25V Y5V 0 047MF Z 1608 4 C101 HCEKF100MC C CHIP ELECTRO MV 16V 10MF D...

Page 63: ...CHIP CERA 50V Y5V 0 1MF Z 1608 4 C148 HCEKF100MC C CHIP ELECTRO MV 16V 10MF D4 0XH5 2 4 C149 HCFK104ZBA C CHIP CERA 50V Y5V 0 1MF Z 1608 4 C15 HCFK104ZBA C CHIP CERA 50V Y5V 0 1MF Z 1608 4 C150 HCFK10...

Page 64: ...Y5V 0 1MF Z 1608 4 C35 HCFK104ZBA C CHIP CERA 50V Y5V 0 1MF Z 1608 4 C36 HCFK104ZBA C CHIP CERA 50V Y5V 0 1MF Z 1608 4 C37 HCFK104ZBA C CHIP CERA 50V Y5V 0 1MF Z 1608 4 C38 HCQK101JBA C CHIP CERA 50V...

Page 65: ...FFHH1M601 COIL CHIP BEAD HH 1M3216 601JT 4 FB19 HFFHH1M601 COIL CHIP BEAD HH 1M3216 601JT 4 FB2 HFFHH1M601 COIL CHIP BEAD HH 1M3216 601JT 4 FB20 HFFHH1M601 COIL CHIP BEAD HH 1M3216 601JT 4 FB21 HFFHH1...

Page 66: ...0 OHM J 1608 4 R13 HRFS102JBA R CHIP 1 16 1K OHM J 1608 4 R130 HRFS105JBA R CHIP 1 16 1M OHM J 1608 4 R131 HRFS102JBA R CHIP 1 16 1K OHM J 1608 4 R132 HRFS000JBA R CHIP 1 16 0 OHM J 1608 4 R133 HRFS1...

Page 67: ...8 4 R77 HRFS472JBA R CHIP 1 16 4 7K OHM J 1608 4 R8 HRFS102JBA R CHIP 1 16 1K OHM J 1608 4 R83 HRFS472JBA R CHIP 1 16 4 7K OHM J 1608 4 R84 HRFS472JBA R CHIP 1 16 4 7K OHM J 1608 4 R85 HRFS000JBA R CH...

Page 68: ...XS24R576E CRYSTAL QUARTZ HC 49 SMD 24 576MHZ 20PF 4 Y3 5XS14R318F CRYSTAL QUARTZ HC 49 SM5H 14 318MHZ 18PF 2 Z2030 PCPLSWJ184 PCB CONTROL AS CML 700CAV 3 CN901 9970760054 CONN AS SMH200 06 YBNH200 07...

Page 69: ...C 3 TH801 DTP8D13 THERMISTOR TP8D13 3 Z3040 PCSMJ0J198 PCB POWER ODD AS CML 700CAV 4 C835 CEXF1E102D C ELECTRO 25V RMU 1000MF 10 20 4 C838 CEXF1C471C C ELECTRO 16V RUS 470MF 10X12 5 TP 4 C839 CEXF1E10...

Page 70: ...G 6 J848 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 6 J849 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 6 J851 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 6 J852 85801065GY WIRE COPPER AWG...

Page 71: ...K 1608 4 C606 HCEKK229MC C CHIP ELECTRO MV 50V 2 2MF M 4 0DX5 3H 4 C607 HCFK104ZBA C CHIP CERA 50V Y5V 0 1MF Z 1608 4 C608 HCEKK229MC C CHIP ELECTRO MV 50V 2 2MF M 4 0DX5 3H 4 C609 HCEKK229MC C CHIP...

Page 72: ...OHM J 1608 4 R607 HRFS242JBA R CHIP 1 16 2 4K OHM J 1608 4 R608 HRFS242JBA R CHIP 1 16 2 4K OHM J 1608 4 R609 HRFS562JBA R CHIP 1 16 5 6K OHM J 1608 4 R610 HRFS562JBA R CHIP 1 16 5 6K OHM J 1608 1 Z10...

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Daewoo L700C, Service Manual

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