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- Daewoo
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- 710C
- Service Manual
Daewoo 710C Service Manual
Summary of 710C
Page 1
Service manual xga color monitor model : 710c daewoo electronics co., ltd overseas service dept..
Page 2
4 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...
Page 3
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 replac...
Page 4: Technical Information
6 power ic, transistor or devices removal/replacement 1. Heat and remove all solders from the device leads. 2. Remove the heatsink mounting screw (if applicable). 3. Carefully remove the device from the circuit board. 4. Insert new device in circuit board. 5. Solder each device lead, and clip off ex...
Page 5: General Information
7 general information this color monitor automatically scans all horizontal frequencies from 30khz to 86khz, 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. T...
Page 6: Pin Connector
8 pin connector cautions for adjustment and repair • degaussing is always required when adjusting purity or convergence. • the white balance adjustment has been done by a color analyzer in factory. The adjustment procedure, described in the service manual is made by a visual check. • allow 20 minute...
Page 7: Operation & Adjustment
9 operation & adjustment 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 8
10 adjustment process menu select menu menu menu menu select select select menu menu osd off contrast 50% brightness 50% pincushion 50% trapezoid 50% color temp. K 9300 6550 red gain k 50% status h : +31.5khz v : +70.5 hz z z z test test pattern no z z z yes menu menu r g b r g b r g b r g b r g b r...
Page 9
11 osd(on-screen display) menu 1 adjust the contrast of image, the difference 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 size). Adjust th...
Page 10
12 osd(on-screen display) menu 2 adjust the left and right margins for more convex or more concave margins. • image turns to by . • image turns to by . Adjust the trapezoid of the screen by moving the lines inward or outward. • image turns to by . • image turns to by . Adjust parallelogram when the ...
Page 11
13 osd(on-screen display) menu 3 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. 9300 6550 color temp. Red gain 50 50 green gain...
Page 12
14 osd(on-screen display) menu 4 self diagnosis display horizontal & vertical frequency and polarity. Display a rgb color bar to determine whether the screen color is expressed normally or not. Yes : vesa dpms operation. No : no dpms operation. Select language for osd. No signal screen is displayed ...
Page 13: Troubleshooting Hints
15 troubleshooting hints 1. No character are the contrast & brightness controls maximum? Change the contrast & brightness control to maximum no raster refer to no raster check the peripheral circuit of crt board check the video output circuit and ic803 (pin 1, 3, 5) and their ambient circuit trouble...
Page 14
16 2. No raster trouble in power supply circuit trouble in power supply circuit trouble in g1 line of main pwb trouble in fbt high voltage trouble in fbt trouble in 80vdc line of power supply unit refer to trouble in p.S.U refer to trouble in power supply unit. Is crt heater red-hot? No no no no no ...
Page 15
17 3. A missing color is input signal normal? One color is missing crt cathode (rk, gk, bk) is normal? Is video output ic803 waveform normal? Each grid (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 ic80...
Page 16
18 4. Abnormal osd font is menu key selected? Is osd font exist? * if menu key selected. Is heater voltage (crt pwb) about 6v? Abnormal osd font is the output of ic802 (pin 21, 22, 23) normal? Trouble in heater voltage line. Refer to trouble in p.S.U troubie in ic802 or its ambient circuit trouble i...
Page 17
19 5. Horizontal output circuit is the drain waveform of q510 normal? Is the h-out waveform of ic501 normal? Trouble in step down circuit (check the step down of ic501, check q510 and its ambient circuit). Trouble in ic501 trouble in horizontal output circuit yes no are the collector waveform of q50...
Page 18
20 6. Unstable 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 4 of ic501 5v? Check the value of c505, r503 yes yes no no trouble in ic501.
Page 19
21 6-2. V.Osc/deflection circuit unstable or abnormal picture is ± 12vdc 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 45vpp is the output pulse of ic501 (pin 23) normal? Trouble in ic401...
Page 20
22 7. Focus monitor remains unfocused adjust finely focus vr in fbt is focus acceptable? Trouble in focus circuit (fbt) yes ok no.
Page 21
23 7-1. Dynamic focus focus is poor is the waveform of the df pin in fbt correct? Nec : 300v 120v samsung : 300v 120v 1. Check the crt socket or connector wire 2. Trouble in fbt or crt 1. Check the waveform of the pin 1 of fbt. 2. Check d614 * check after adjusting the static focus finely by vr in f...
Page 22
24 8. Convergence 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 convergence.
Page 23
25 9. Abnormal picture 9-1. Horizontal size it isn't out of order. Is the h.Size about 295mm at vga mode and min. H.Size on osd menu? No yes 1.Check b+ section of tda9110 and its ambient circuit. 2.Check ic503 and its ambient circuit. Abnormal h.Size.
Page 24
26 9-2. Vertical size is changeable the 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 changeable the dc level of pin 23 of the ic501? Yes abnormal v.Size.
Page 25
27 10. High voltage circuit trouble in q602 or fbt is q602 base waveform normal? Yes yes trouble in q612, q613 12v line is q601 collector waveform normal? Yes no trouble in q601 is q503 emitter waveform normal? Yes no trouble in q503, q504 is ic501 pin 26 waveform normal? Yes no trouble in power sup...
Page 26
28 11. Side-pincushion circuit side-pincusion distortion is excessive or barrel o.K select the side-pincushion icon on osd menu, and adjust acceptable position. Yes check q501 or its ambient circuit. Is the pin 24 waveform of ic501 correct ? Yes no check ic501 or its ambient circuit. Trouble in h.V ...
Page 27
29 12. Power supply unit (p.S.U) is the voltage of ic001 pin 4 more than 14.5v? Replace dz001, q001, q002 and d003 no is voltage of c101 210vdc? No is voltage of c117 5vdc? No is voltage of t001 pin 6 130v (370v)? Trouble in th001, c014, bd001, d003, d004, d008 no is the waveform of ic001 pin 3 corr...
Page 28
30 is voltage of c124 8.7vdc? Trouble in d109 or crt no is voltage of c115 12vdc? No yes yes yes is voltage of c116 -12vdc? Trouble in d107, ic104 or vertical part. P.S.U o.K trouble in d105, d106, ic102, ic103, ic701 or horizontal part. No a.
Page 29: Alignment Procedure
31 alignment procedure standard adjustment conditions 1. Power source voltage : ac 120v, 60hz./ac 220v, 50hz 2. Aging : take at least 20 minutes warm-up time. 3. Signals. Video : analog 0.7vpp 75 Ω terminal positive polarity synchronizing : ttl level negative/positive separate/composite deflection f...
Page 30
32 (k) repeat (c),(d),(e),(f),(g). Just a difference from 9300°k mode is color coordinates. Set color coordinates in x=0.313, y=0.329 6. Static convergence adjustment (a) apply an magenta cross hatch pattern on display. (b) adjust the focus from the best over all focus on the display. Also adjust th...
Page 31: Block Diagram
33 block diagram usb (option) emi filter (03me3d) 15pin d-sub line filter (dlf-3060) degaussing circuit pfc (option) control (mc34262) smps control (str-f6656) smps transformer sync trans (dst-601) eprom (24lc08) video preamp (ka2500) video output amp (lm2403) video dc-bias circuit osd ic lsc4523p2 ...
Page 32
Schematic diagram 37.
Page 33
Exploded view diagram 38.
Page 34: Replacement Parts List
Fig & part no description index capacitors c102 ccxf1h104z ceramic 50v z c402 ccxb1h331k ceramic 50v k c105 cbslh200j ceramic 50v j resistor description example: capacitor description example: important safety notice components identified with the international symbol have special characteristics im...
Page 35: Electrical Parts List
00001 9979800464 pcb main t1.6*246*330 00001 9979800465 pcb crt t1.6*136*105 b002 5pb13857— coil bead bi3857(axial) b547 5pb13857— coil bead bi3857(axial) b890 5pb13857— coil bead bi3857(axial) b891 5pb13857— coil bead bi3857(axial) b893 5pb13857— coil bead bi3857(axial) b895 5pb13857— coil bead bi3...
Page 36
C119 cmxl2d104j c mylar meu 200v 0.1mf j(tp) c120 cexf2a470v c electro 100v rss 47mf (10x16) tp c123 cmxm2a472j c mylar 100v 4700pf j (tp) c124 cexf1c471v c electro 16v rss 470mf (10x12.5)tp c130 ch1fdf472m c cera ac hikb ac400v 4700pf m c140 cczf1h104z c cera 50v hikf 0.1mf z c141 cczf1h104z c cera...
Page 37
C517 cxch1h120j c cera 50v ch 12pf j (tapping) c518 cexf1h470v c electro 50v rss 47mf (6.3x11) tp c519 cmxm2a473j c mylar 100v 0.047mf j (tp) c520 cexf1e101v c electro 25v rss 100mf (6.3x11) tp c521 cczf1h104z c cera 50v hikf 0.1mf z c522 cczf1h104z c cera 50v hikf 0.1mf z c523 cexf1h220v c electro ...
Page 38
43 c577 cczf1h104z c cera 50v hikf 0.1mf z c578 cexf1e221v c electro 25v rss 220mf (8x11.5) tp c579 cmxb2a122g c mylar eu 100v 1200pf g c581 czch1h390j c cera ch 50v 39pf j axial 52mm c582 cczb1h391k c cera 50v b 390pf k c583 cexf1h100v c electro 50v rss 10mf (5x11) tp c584 cexf1h109v c electro 50v ...
Page 39
44 c628 cmxl2a224j c mylar 100v meu 0.22mf j c631 cmxm2a104j c mylar 100v 0.1mf j (tp) c632 cexd1h100f c electro 50v rnd 10mf (8x11.5) tp c641 cexd1e220f c electro 25v rnd 22mf 6.3*11(tp) c642 cexf1c331v c electro 16v rss 330mf (8x11.5) tp c701 cczf1h103z c cera 50v f 0.01mf z c702 czsl1h330j c cera...
Page 40
45 c852 cmxm2a103j c mylar 100v 0.01mf j (tp) c853 hczk104zca c chip cera z5u 50v 0.1mf z 2012 c854 cexf1e101v c electro 25v rss 100mf (6.3x11) tp c857 hczk104zca c chip cera z5u 50v 0.1mf z 2012 c858 cexf1h100v c electro 50v rss 10mf (5x11) tp c859 cczb1h101k c cera 50v b 100pf k c860 cexf2e339c c ...
Page 41
46 d001 dzn4148—- diode 1n4148 auto 52mm d002 d1n4937gp- diode 1n4937gp (tapping) d003 d1n4937gp- diode 1n4937gp (tapping) d004 dru1p——- diode ru 1p (tapping) d008 d1n4937gp- diode 1n4937gp (tapping) d101 ds3l60—— diode s3l60 d102 ds3l60—— diode s3l60 d104 drg2av1—- diode rg2av1 d105 drg4——— diode r...
Page 42
47 d604 d1ns4——- diode 1ns4 d605 dzn4148—- diode 1n4148 auto 52mm d606 dzn4148—- diode 1n4148 auto 52mm d607 dzn4148—- diode 1n4148 auto 52mm d611 ds2l60—-r diode s2l60 d614 dru1p——- diode ru 1p (tapping) d643 dzn4148—- diode 1n4148 auto 52mm d644 dzn4148—- diode 1n4148 auto 52mm d645 dzn4148—- diod...
Page 43
48 dz703 dgdzj5r6b- diode zener gdzj 5.6b dz704 dgdzj5r6b- diode zener gdzj 5.6b dz705 dgdzj5r6b- diode zener gdzj 5.6b dz706 dgdzj5r6b- diode zener gdzj 5.6b dz707 dgdzj5r6b- diode zener gdzj 5.6b dz851 dgdzj5r6b- diode zener gdzj 5.6b dz852 dgdzj5r6b- diode zener gdzj 5.6b dz853 dgdzj5r6b- diode z...
Page 44
49 led01 dal151rgw- led al-151rgw lf001 5pdlf3060l filter line dlf-3060l p001 9979500010 receptacle 03me3d/ filter emi p101 4857417500 term pin da-ib0214(d2.3/dy pin) p102 4857417500 term pin da-ib0214(d2.3/dy pin) p501 4857417500 term pin da-ib0214(d2.3/dy pin) p502 4857417500 term pin da-ib0214(d2...
Page 45
50 q515 tztc3198y- tr ktc3198y-(1815y) (auto) q516 t1rf640—- fet irf640 q518 t1rf640—- fet irf640 q520 t1rf640—- fet irf640 q522 t1rf640—- fet irf640 q530 tztc3198y- tr ktc3198y-(1815y) (auto) q532 t2n3904—- tr 2n3904 q533 tzta1270y- tr kta1270y(auto)(562y) q601 t2n3904—- tr 2n3904 q602 t2sk2847— fe...
Page 46
51 r008 rd-4z100j- r carbon film 1/4 10 ohm j r009 rs01z333j- r m-oxide film 1w 33k ohm j (tapping) r010 rs02z473j- r m-oxide film 2w 47k ohm j (tapping) r011 rd-2z105j- r carbon film 1/2 1m ohm j r012 rd-2z105j- r carbon film 1/2 1m ohm j r013 rs02z333j- r m-oxide film 2w 33k ohm j r014 rd-2z474j- ...
Page 47
52 r409 rd-az153j- r carbon film 1/6 15k ohm j r411 rd-az432j- r carbon film 1/6 4.3k ohm j r412 rd-az103j- r carbon film 1/6 10k ohm j r413 rd-4z471j- r carbon film 1/4 470 ohm j r414 rd-az152j- r carbon film 1/6 1.5k ohm j r415 rd-az103j- r carbon film 1/6 10k ohm j r416 rd-az303j- r carbon film 1...
Page 48
53 r531 rd-4z152j- r carbon film 1/4 1.5k ohm j r532 rs02z229j- r m-oxide film 2w 2.2 ohm j(tapping) r533 rd-az101j- r carbon film 1/6 100 ohm j r534 rd-az512j- r carbon film 1/6 5.1k ohm j r535 rd-az103j- r carbon film 1/6 10k ohm j r536 rs02z750j- r m-oxide film 2w 75 ohm j (tapping) r537 rn-az475...
Page 49
54 r573 rs02z309j- r m-oxide film 2w 3 ohm j (tapping) r574 rd-4z561j- r carbon film 1/4 560 ohm j r576 rd-2z229j- r carbon film 1/2 2.2 ohm j r577 rd-az512j- r carbon film 1/6 5.1k ohm j r578 rd-az152j- r carbon film 1/6 1.5k ohm j r579 rn-az1212f r metal film 1/6 12.1k ohm f r580 rd-az303j- r carb...
Page 50
55 r615 rn-az4700f r metal film 1/6 470.0 ohm f r616 rd-az122j- r carbon film 1/6 1.2k ohm j r617 rd-az103j- r carbon film 1/6 10k ohm j r618 rd-az821j- r carbon film 1/6 820 ohm j r619 rd-az473j- r carbon film 1/6 47k ohm j r620 rd-2z472j- r carbon film 1/2 4.7k ohm j r621 rd-az332j- r carbon film ...
Page 51
56 r684 rd-az102j- r carbon film 1/6 1k ohm j r685 rd-4z433j- r carbon film 1/4 43k ohm j r701 rd-az472j- r carbon film 1/6 4.7k ohm j r702 rd-az472j- r carbon film 1/6 4.7k ohm j r703 rd-az473j- r carbon film 1/6 47k ohm j r704 rd-az102j- r carbon film 1/6 1k ohm j r705 rd-az472j- r carbon film 1/6...
Page 52
57 r804 rd-az100j- r carbon film 1/6 10 ohm j r806 rd-az181j- r carbon film 1/6 180 ohm j r807 rc-2z470j- r carbon comp 1/2 47 ohm j r808 rd-az330j- r carbon film 1/6 33 ohm j r809 rd-az330j- r carbon film 1/6 33 ohm j r810 rd-az330j- r carbon film 1/6 33 ohm j r812 rd-az823j- r carbon film 1/6 82k ...
Page 53
58 r862 rd-az101j- r carbon film 1/6 100 ohm j r863 hrft391jca r chip 1/10 390 ohm j 2012 r864 rd-az100j- r carbon film 1/6 10 ohm j r866 rd-az181j- r carbon film 1/6 180 ohm j r867 rc-2z470j- r carbon comp 1/2 47 ohm j r868 hrft000jca r chip 1/10 0 ohm j 2012 r869 hrft000jca r chip 1/10 0 ohm j 201...
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59 r958 rd-az102j- r carbon film 1/6 1k ohm j r963 hrft823jca r chip 1/10 82k ohm j 2012 rl001 5sc0101005 sw relay hr-cr313 dc12v 1c-1p s001 9970800019 cable signal as 15p+2c/ddc=1.5m(ivy) sg801 dwsp201m— surge absorber wsp-201m sg831 dwsp201m— surge absorber wsp-201m sg861 dwsp201m— surge absorber ...