Summary of 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 http://www.Wjel.Net.
Page 2: 资料库
资料库 转载请注明出处 http:// scwj .8800.Org http:// wjbbs .Mpc.Cn 请保留此页 http://www.Wjel.
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3 servicing precautions ◆ general servicing precautions 1. Always unplug the ac power cord from the ac power source before: a. Removing or reinstalling any component, circuit board, module, or any other instrument assembly. B. Disconnecting or reconnecting any electrical plug or other electrical con...
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4 ◆ 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, ...
Page 5: ◆ Removal
5 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 repl...
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Panel size 17-inch (43.2 cm) diagonal pixel pitch 0.264 x 0.264 mm viewing angle 75°(right/left) 70°(up), 70°(down) contrast ratio 400:1 contrast ratio (typ) brightness 250cd/m 2 brightness (typ) color filter rgb vertical stripe synchronization horizontal 30 - 80 khz vertical 56 - 77 hz video bandwi...
Page 7: ◆ Abbreviations
7 this tft lcd monitor automatically scans all horizontal frequencies from 30khz to 80khz, and all vertical frequencies from 56hz to 77hz. This tft lcd 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 w...
Page 8: ◆ Caution For Servicing
8 arrangement of 15-pin d-sub connector pin signal 1 red 2 green 3 blue 4 gnd 5 gnd 6 gnd - red 7 gnd - green 8 gnd - blue 9 + 5vdc 10 gnd - h.Sync 11 gnd - v.Sync 12 bi-directional data (sda) 13 horizontal sync 14 vertical sync (vclk) 15 data clock (scl) 1 6 10 15 pin connector • the white balance ...
Page 9: Control Panel
9 control panel > operation and adjustment swithes the monitor on and off. Shows both normal operation and power management status with power indicator light. Power indicator power 1 2 3 1 2 6 7 8 4 5 moves cursor to the right or low window in the osd window and increases the value of any selected f...
Page 10: Key Process
10 key process hot key au to t r ac k i n g brightness when there is no osd, if you press this auto button, you can use the best display 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 : inc...
Page 11: Control Panel
11 control panel > moves cursor to the right or low window in the osd window and increases the value of any selected function. Swithes the monitor on and off. Shows both normal operation and power management status with power indicator light. Power indicator power 1 3 4 2 moves cursor to the left or...
Page 12: Key Process
12 when there is no osd, if you press this auto button, you can use the best display 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 au to t r ac k i n g auto brightne...
Page 13: Control Panel
13 control panel > swithes the monitor on and off. Shows both normal operation and power management status with power indicator light. Power indicator power 1 2 1 2 6 7 8 5 4 3 select exit auto 3 4 5 moves cursor to the right or low window in the osd window and increases the value of any selected fu...
Page 14: Key Process
14 when there is no osd, if you press this auto button, you can use the best display 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 key process hot key osd off menu e...
Page 15: Adjustment Procedure
15 adjustment procedure adjust the clock control. Perform the auto position . Is the h.Size 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 cleared....
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16 display horizontal & vertical frequency and polarity. Status reset the screen to the factory preset display settings. Recall auto position choose automatically the proper horizontal position and vertical position & size of the screen image. Contrast adjust the contrast of image, the difference be...
Page 17: Osd Functions (L700Cav)
Adjust the blue color. Adjust the red color. 17 clock sound increase or decrease audio volume. Volume balance audio sound. Balance adjust high frequency response. Adjust low frequency response. Treble bass auto tracking adjust the horizontal & vertical picture image quality and size. Adjust the widt...
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Contrast 18 adjust the display image quality (if the screen proceed to scaling up). Sharpness select language for osd (6 languages). Language adjust the osd position horizontally (left or right) and vertically (up or down). Osd position osd reset the screen to the factory preset display settings. Re...
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Balance audio sound. Color volume brightness contrast adjust the contrast of image. Adjust the brightness of image. Increase or decrease audio volume. 19 > sound adjust saturation of image. Saturation adjust the hues of image. Hue adjust the display image quality (if the screen proceed to scaling up...
Page 20: Self Diagnosis
20 self diagnosis if there is no image, the self diagnosis screen will be displayed. Self diagnosis function checks if the status of the monitor screen is no signal, out of range or none support. “no signal” screen is displayed when the d-sub signal connector is not connected or the status of the mo...
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21 standard check point 1. Power source : 100 - 240vac, 50/60hz. 2. Aging : take at least 20 minutes warm-up time. 3. Signal video input : analog 0.7vpp 75 Ω terminal positive polarity synchronizing : acceptable negative or positive at ttl level max. Resolution : 1280 x 1024 75hz frequency horizonta...
Page 22: 1. Abnormal Mode Detect
22 troubleshooting hints (l700c/l700cm/l701c/l701cm) 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. Trouble in scaler(u9). Yes http://www.Wjel.Ne...
Page 23: 2. Trouble In Power On
23 2. Trouble in power on no no yes yes is 5vs line normal(pin 8 of con2)? Trouble in u7 & q3 and its ambient circuit. Check 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...
Page 24: 3. No Raster
24 3. No raster is 12v plugged in pin 1 of cn4a(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 check the output of q4 or pin 41 of u6. Trouble in q5 or pin 41 of -com. Http://www.Wjel.Net.
Page 25: 4. One Color Is Missing
25 4. One color is missing is the osd color normal? One color is missing no yes check the output signal 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...
Page 26: 5. No Video
26 5. No video has display image only white? No yes next page. 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 well connected at the lcd pane...
Page 27: 5-1. No Video
27 is osd normal? Black no no yes yes is the contrast at its maximum? 3. No raster set the contrast up to max. Next page. Yes no yes is the output 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 i...
Page 28: 6. Power Problem
28 no no yes yes check 5vs, 5vd, 5va 3.3v of cn2a. 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 6. Power problem http://www.Wjel.Net.
Page 29: 1. Abnormal Mode Detect
29 1. Abnormal mode detect 1-1. Abnormal mode detect for pc source 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). Yes troubleshooting hints ...
Page 30: 1. Abnormal Mode Detect
30 1. Abnormal mode detect 1-2. Abnormal mode detect for 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). Trouble in scaler(u9). Yes yes h...
Page 31: 2. Trouble In Power On
31 2. Trouble in power on no no yes yes is 5vs line normal(pin 8 of con2)? Trouble in u7 & q3 and its ambient circuit. Check 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...
Page 32: 3. No Raster
32 3. No raster is 12v plugged in pin 1 of cn4a(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 check the output of q4 or pin 41 of u6. Trouble in q5 or pin 41 of -com. Http://www.Wjel.Net.
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33 4. One color is missing for pc source is the osd color normal? One color is missing no yes check the output signal 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 y...
Page 34: 5. No Video
34 5. No video has display image only white? No yes next page. 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 well connected at the lcd pane...
Page 35: 5. No Video
35 is osd normal? Black no no yes yes is the contrast at its maximum? 3. No raster set the contrast up to max. Next page. Yes no yes is the output 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 i...
Page 36: 5. No Video
36 5. No video 5-2. No video for av source is osd normal? Black no no yes yes is the contrast at its maximum? 3. No raster set the contrast up to max. Next page. Yes no yes is the output of decoder(u5) correct? No yes is the input of decoder(u5) correct? Check the video input signal (or check the co...
Page 37: 6. Power Problem
37 no no yes yes check 5vs, 5vd, 5va 3.3v of cn2a. 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 6. Power problem http://www.Wjel.Net.
Page 38: 7. Sound Problem
38 is audio-in ok? (pin 10, 14 at pc source and pin 9, 13 at av source no sound no no yes yes is vdd(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 2...
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39 video signal digital signal h/v sync. R/g/b signal power on/off dimming control inverter on/off lvds data(12) clock(4) r(8),g(8),b(8) scaler asi311 adc ad9884a tmds sil151 (option) decoder saa7114 (option) lvds(nt7181f) x 2 lcd panel modular l170e3 ec-5 key control pcb u-com mtv312mv64 power modu...
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40 vga analog input section schematic diagram http://www.Wjel.Net.
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Dtf connection tmds section 41 http://www.Wjel.Net.
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Damping networks section 42 http://www.Wjel.Net.
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Ntsl/pal decoder section 43 http://www.Wjel.Net.
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Mysonweltrend microcontroller section 44 http://www.Wjel.Net.
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Asi 311 section 45 http://www.Wjel.Net.
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Asi 311 decoupling caps section 46 http://www.Wjel.Net.
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Lcd panel interface section 47 http://www.Wjel.Net.
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Power distribution section 48 http://www.Wjel.Net.
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Audio interface section 49 http://www.Wjel.Net.
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Analog adc (ad9884a-140) section 50 http://www.Wjel.Net.
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Exploded view & mechanical parts list 51 http://www.Wjel.Net.
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52 resistor description example: capacitor description example: fig & part no description index capacitors c28 hcfk104zba chip cera 50v z c63 hcbk393kba chip cera 50v k c44 hcqk102jba chip cera 50v j tolerance c ± 0.25pf d ± 0.5% f ± 1pf j ± 5% k ± 10% p ± 100% ~ 0% z ± 80% ~ – fig & part no descrip...
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Electrical parts list (l700c/l700cm/l701c/l701cm) 53 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. 1 z1010 pcfmcaj191(192) cover front as cml-700c(l700cm) 2 ca001 9970...
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54 4 c125 hcqk180jba c chip cera 50v ch 18pf j 1608 4 c126 hcfk104zba c chip cera 50v y5v 0.1mf z 1608 4 c127 hcfk104zba c chip cera 50v y5v 0.1mf z 1608 4 c128 hcfk104zba c chip cera 50v y5v 0.1mf z 1608 4 c129 hcedc470mc c chip electro mv 6.3v 47mf 5dx5.2h 4 c130 hcedc470mc c chip electro mv 6.3v ...
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4 c191 hcfk104zba c chip cera 50v y5v 0.1mf z 1608 4 c192 hceef101md c chip electro mv 16v 100mf m 6.3dx5.7h 4 c193 hcfk104zba c chip cera 50v y5v 0.1mf z 1608 4 c194 hcfk104zba c chip cera 50v y5v 0.1mf z 1608 4 c20 hcfk104zba c chip cera 50v y5v 0.1mf z 1608 4 c201 hceef101md c chip electro mv 16v...
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56 4 fb24 hffhh1m601 coil chip bead hh-1m3216-601jt 4 fb25 hffhh1m601 coil chip bead hh-1m3216-601jt 4 fb26 hffhh1m601 coil chip bead hh-1m3216-601jt 4 fb28 hffhh1m601 coil chip bead hh-1m3216-601jt 4 fb29 hffhh1m601 coil chip bead hh-1m3216-601jt 4 fb30 hffhh1m601 coil chip bead hh-1m3216-601jt 4 f...
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4 r136 hrfs102jba r chip 1/16 1k ohm j 1608 4 r14 hrfs332jba r chip 1/16 3.3k ohm j 1608 4 r142 hrfs472jba r chip 1/16 4.7k ohm j 1608 4 r143 hrfs102jba r chip 1/16 1k ohm j 1608 4 r16 hrfs121jba r chip 1/16 120 ohm j 1608 4 r17 hrfs121jba r chip 1/16 120 ohm j 1608 4 r18 hrfs121jba r chip 1/16 120 ...
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58 4 ra24 hrts8e330j r chip array 1/16 8p 33 ohm 3216 4 ra28 hrts8e330j r chip array 1/16 8p 33 ohm 3216 4 ra29 hrts8e330j r chip array 1/16 8p 33 ohm 3216 4 ra30 hrts8e330j r chip array 1/16 8p 33 ohm 3216 4 ra31 hrts8e330j r chip array 1/16 8p 33 ohm 3216 4 ra32 hrts8e330j r chip array 1/16 8p 33 ...
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3 cn2a 99707a0024 conn as 35164+ydh200+2464#24=150 3 cn4a 9970750037 conn as 5264+35164+2464#24=135 3 cn6a 9979200203 conn wafer yw396-03av 3 d801 dd3sba60-- diode d3sba60 3 d811 pchcswj184 heat sink c as cml-700c 4 00010 9977031900 heat sink 319 al t=2.0 4 00020 9976012700 screw special tt2 bin 3*8...
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60 6 d805 dzn4148--- diode 1n4148 auto 52mm 6 d807 duf4007--- diode uf4007 6 d809 dug2d----- diode ug2d 200v 2a 6 dz803 ddz22bm--- diode zener dz22bm 6 dz806 dgdzj18c-- diode zener gdzj 18c 6 j803 85801065gy wire copper awg22 1/0.65 tin coating 6 j805 85801065gy wire copper awg22 1/0.65 tin coating ...
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6 r840 rn-az6491f r metal film 1/6w 6.49k ohm f (tp) 6 r841 rd-az102j- r carbon film 1/6 1k ohm j 6 r854 rd-az102j- r carbon film 1/6 1k ohm j 6 r855 rd-4z512j- r carbon film 1/4 5.1k ohm j 2 z2050 pcdsswj191(192) pcb d-sub as cml-700c(l700cm) 3 ca601 99707c0017 conn as ydh200-12+ybnh200-14+2990 9c=...
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Electrical parts list (l700cav) 62 1 z1010 pcfmcaj184 cover front as cml-700cav 2 ca001 9970703000 conn as 12507hs-30+fi-x30h+20276=220(lvds) 2 ca002 9970710281 conn as 0.12*3*16+35750-0910*2=80 2 lcd 9979617090 lcd panel l170e3 ec-5 2 yf010 99720222a1 cover front as cml-700c c/front as 2 yf020 9977...
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4 c12 hcfh473zba c chip cera 25v y5v 0.047mf z 1608 4 c120 hcfk104zba c chip cera 50v y5v 0.1mf z 1608 4 c121 hcfk104zba c chip cera 50v y5v 0.1mf z 1608 4 c122 hcfk104zba c chip cera 50v y5v 0.1mf z 1608 4 c123 hcqk100jba c chip cera 50v ch 10pf j 1608 4 c124 hcqk100jba c chip cera 50v ch 10pf j 16...
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64 4 c183 hcedc470mc c chip electro mv 6.3v 47mf 5dx5.2h 4 c190 hceef101md c chip electro mv 16v 100mf m 6.3dx5.7h 4 c191 hcfk104zba c chip cera 50v y5v 0.1mf z 1608 4 c192 hceef101md c chip electro mv 16v 100mf m 6.3dx5.7h 4 c193 hcfk104zba c chip cera 50v y5v 0.1mf z 1608 4 c194 hcfk104zba c chip ...
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4 c82 hcfk104zba c chip cera 50v y5v 0.1mf z 1608 4 c83 hcfk104zba c chip cera 50v y5v 0.1mf z 1608 4 c84 hcfk104zba c chip cera 50v y5v 0.1mf z 1608 4 c85 hcfk104zba c chip cera 50v y5v 0.1mf z 1608 4 c86 hcfh473zba c chip cera 25v y5v 0.047mf z 1608 4 c88 hcfh473zba c chip cera 25v y5v 0.047mf z 1...
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66 4 r102 hrfs472jba r chip 1/16 4.7k ohm j 1608 4 r104 hrfs000jba r chip 1/16 0 ohm j 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 hrfs472jba r chip 1/1...
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4 r50 hrfs180jba r chip 1/16 18 ohm j 1608 4 r51 hrfs560jba r chip 1/16 56 ohm j 1608 4 r52 hrfs180jba r chip 1/16 18 ohm j 1608 4 r53 hrfs560jba r chip 1/16 56 ohm j 1608 4 r54 hrfs180jba r chip 1/16 18 ohm j 1608 4 r55 hrfs560jba r chip 1/16 56 ohm j 1608 4 r57 hrfs180jba r chip 1/16 18 ohm j 1608...
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68 4 ra29 hrts8e330j r chip array 1/16 8p 33 ohm 3216 4 ra30 hrts8e330j r chip array 1/16 8p 33 ohm 3216 4 ra31 hrts8e330j r chip array 1/16 8p 33 ohm 3216 4 ra32 hrts8e330j r chip array 1/16 8p 33 ohm 3216 4 ra33 hrts8e330j r chip array 1/16 8p 33 ohm 3216 4 ra34 hrts8e330j r chip array 1/16 8p 33 ...
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3 cn2a 99707a0024 conn as 35164+ydh200+2464#24=150 3 cn4a 9970750037 conn as 5264+35164+2464#24=135 3 cn6a 9979200203 conn wafer yw396-03av 3 d801 dd3sba60-- diode d3sba60 3 d811 pchcswj184 heat sink c as cml-700c 4 00010 9977031900 heat sink 319 al t=2.0 4 00020 9976012700 screw special tt2 bin 3*8...
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70 5 z5040 pcsmjaj198 pcb power axial as cml-700cav 6 b801 5pb13857-- coil bead bi3857(axial) 6 d802 dug2d----- diode ug2d 200v 2a 6 d805 dzn4148--- diode 1n4148 auto 52mm 6 d807 duf4007--- diode uf4007 6 d809 dug2d----- diode ug2d 200v 2a 6 dz803 ddz22bm--- diode zener dz22bm 6 dz806 dgdzj18c-- dio...
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6 r841 rd-az102j- r carbon film 1/6 1k ohm j 6 r854 rd-az102j- r carbon film 1/6 1k ohm j 6 r855 rd-4z512j- r carbon film 1/4 5.1k ohm j 2 z2050 pcdsswj184 pcb d-sub as cml-700cav 3 ca601 99707c0017 conn as ydh200-12+ybnh200-14+2990 9c=175(rgb) 3 ca602 9970780034 conn as ydh200-08+ybnh200-09+1007#26...
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72 4 d608 drls4148-- diode chip rls4148 4 dz601 drlz5r6b-b diode chip zener rlzte-11 5.6b 4 dz602 drlz5r6b-b diode chip zener rlzte-11 5.6b 4 dz603 drlz5r6b-b diode chip zener rlzte-11 5.6b 4 dz604 drlz5r6b-b diode chip zener rlzte-11 5.6b 4 dz605 drlz5r6b-b diode chip zener rlzte-11 5.6b 4 dz606 dr...