SERVICE MANUAL
Contents
1. 012v CNB06 7 CS yaw R101 12V WA CN101 80803 og we T iom x um R CUT GAIN 0 008 erg E ROUT O O e E kO SEN e sev mz 88 bass beers ren 1 9 S 194 R105 250V 1 22 56 256 256 Ic1e1 1 7 Leg 102 0103 eg Vd nyy 6 00 16 60 eov 0 0150 M 0210 52. 10 1 MAIN 247mm 4 41 gt i 10 2 VIDEO apa OGG 98mm 128mm pen 5 6 voam 130v
3. YES pe 501 1 502 Pin8 and pin8 wave MO Check and replace form are right X501 C512 C513 yes 1 502 Pin 5 is over than NO 4 5Volt Check and replace R507 YES All input output value T Check replace 1C502 are right YES Done 5 2 13 No Raster Does fly back pulse NO Check D712 D715 collector of 0712 appear and 80V Line emer nel 1301 26pin Check the Pin 26 of IC301 Does NO Check and replace 1 301 12Vp p pulse appear YES D h f Mat NO Check and replace CH Di E SE 0714 0715 0713 YES 703 8pin Check the voltage PIN 7 of NO Check the IC701 Does 12V DC appear 12V line YES Does the wave form at NO Check and replace pin 4 of IC701 appear o 701 Yes Check heater voltage 6 3V 24 5 2 14 No Video Check signal cable and connector YES IC802 Pin6 Pin8 Pin10 video input are right YES IC802 Pin16 Pin19 Pin22 video output are right WES Q806R G B video output are right R G B cathode wave forms are right YES Y G2 voltage are right 550 50V YES Y G1 voltage are right 45 10 YES Check and replace CPT Check R G B Cable conector Check and replace 802 0803 12V 80V Line
4. Q BACK PORCH R ACTIVE TIME S FRONT PORCH CGA EGA VGA SVGA 640 200 640 200 640 400 6407480 8007600 f KHz 15 750 15 750 24 827 31 469 37 88 A uS 63 5 63 5 40 28 31 778 26 40 4 B uS 8 671 8 672 3 04 3 813 3 20 C uS 7 272 7 272 3 8 1 907 2 20 D 40 836 40 836 30 399 25 422 20 00 E us 6 72 6 72 3 04 0 636 1 00 POL POS POS POS NEG POS f Hz 50 60 115 55 609 59 940 60 317 O mS 20 0 16 63 17 98 16 683 16 58 P mS 0 444 0 444 0 322 0 064 0 11 V Q ms 0 825 0 825 1 26 1 048 0 61 R mS 18 603 15 302 16 111 15 253 15 84 S mS 0 128 0 06 0 282 0 318 0 03 POL POS POS POS NEG POS 3 Operating Instruction 3 1 FRONT FRAME 3 3 Function of Control t e e e MENU SELECT TE EXIT DEGAUSSING Control Function LED Power Indicator The light of power LED changes according to each state on mode Green LED power saving mode green LED blinking MENU Sellect When you press this button the MENU appears The MENU will disappear in 10 seconds if you don t operate any button When you press EXIT button again the MENU disappears This button is In MENU the this button used to select the control item on the MENU control item could be selected and unselected by EXIT This button is used to exit the value of any selected control UP This button This button S
5. 5 2 10 Dynamic Focus Failure or poor Focus YES Try Readjusting double Focus D Check the wave form at 50601 NO Collector Does appear parabola wave form T701 wave form is right ves Replace the CPT and verify focus 22 Done Check and replace R712 T701 Check and replace T701 5 2 10 Visible Retrace Is Screen voltage 600 20V right WES Does 0201 collector pulse 85Vp p exist es Does Q201 base drive wave form exist NO Check Screen control voltage gt and FBT Check 80V Line Check The G1 YES Check and replace 1 201 oe 5 2 11 ACL Failure Input full white pattern to monitor 5 Check the voltage at pin 2 of IC502 PWM WAVE FORM LLL 1 0201 COLLECTOR G1 NO Check replace 502 YES T NO Q605 Q607 base input exists YES Q605 12V Y Check and replace pin 12 of the 108027 m m m P 23 mm U s En Y 66 502 2 PWM 5 2 12 Micom Failure Does 5V appear Pin6 of 1 5022
6. Check R839R G B and Q805R G B Check screen CPT socket and FBT A Chi 37 27 7 800 R G B Cathode wave form 25 5 2 15 Abnormal 4 Invariable H size Check and replace IC301 and 12V 80V Line Check and replace T303 IC 301 Pin24 output NO parabola level variable YES Does T303 Pin8 pulse NO is appear YES Check some parts around T702 are they OK YES Check and replace Q710 5 2 16 OSD failure Check CN401 VES 801 Pin5 10 wave forms are right YES When you click on the MENU botton 801 Pin13 Pin14 Pin15 Pin12 wave forms are right YEs When you click on the MENU botton 502 Pin10 Pin11 wave forms are right YES Check and replace 1 802 M4 0066 7 anv CRAL IC301 24pin Check and replace Q802 Q803 Check and replace 801 5 Line NO 1 502 SDA SCL Line 26 5 2 17 V deflection failure Does 12V DC appear at Pin2 of IC201 NO Refer to No power supply Does 12V DC appear at Pin5 of 1C201 301 13 Pin 23 Check and replace 16301 output exist YES IC 502 Pin 33 output NO 2 exist gt Check and replace 165027 YEs Ch
7. 16v 16v 0137 4 0 DE pi 220 50v 0103 SUSPEND Ne om s CGA EGA COMPOSTE SIGNAL INPUT 130788 4 7K 15P D SUB Rist MC33260 WAWA 0 aerch R403 1M 174w 15 1 48 5V _ k h VIDEO LEVEL woes uem te e 9 9 10501 1 n CN404 CN405 CN406 CN409 CN407 xxxix 501 2 5 1 8 503 SHE 62919010101 0000 10K R501 57 7 2 7 50 C406 4 sw 2 2 2 560 338 sc 582 dM 4 sS lt 1 idis wrezet m ND 503 s 4 7 80V 1 42 R524 190 S SYNC KE SIE E R514 505 5 4 R OUT 5 CA SI 516 VS 1 1 50V lt cour gt 0 4 3 oUr gt 3 20502 mem va H Jusen Car San 4 NR 6517 39kF C504 C403 9411 8412 6405 B OUT T SH EN es H SZE ssp sev xw 4 50 120 wO ipi R516 50v ar 50 qe PME Si A 4 4 vu wo R519 0403 9 Be m m m m ces Kat iv 2 sl 56 5 120 120 120 wo xe 100 100 5208 Ges R205 ei IER gt 50v ss 217 ech 8 2K mme EET ROTATION gt mom 7 7 7 K 0801 00 5 0 F SYNC 2 1 4 R523 100 e C702 CN401 CN403 pun 4 B V SYNC 2 gt o 0703 9 150 250 MPP 4 saz ws c2es C204 Sa qu E E lt DEGAUS 4 zl R525 18K 1 44 T 4700 2 9 8 8 8 9
8. 407 409 406 GGA EGA CN407 405 8 404 VGA SVGA bes maa 0 1 BN rdf a Th 4 SIGNAL IN i Ca 1 6 o o 29 250V 14 14 1 o euer R CUT GAIN 2 c G CUT GAIN B CUT GAIN
9. 1 2 Some electrical and mechanical parts have special safety related characteristics which are often not evident from visual inspection The protection they give may not be obtained by replacing them with components rated for higher volt age wattage etc Parts that have special safety characteristics are identified by A on schematics and parts lists A substitute replacement that does not have the same safety characteristics as the recommended replacement part might create shock fire and or other hazards Product safety is under review continuously and new instructions whenever appropriate Servicing Precautions WARNING 1 First read the Safety Precaution section of this manual if unforeseen circumstances create conflict between the servicing precautions and safety precautions always follow the safety precautions WARNING 2 A High Voltage volume replaced in the wrong direction may cause excessive X ray emissions WARNING 3 An electrolytic capacitor installed with the wrong polarity might explode 1 Servicing precautions are printed on the chassis and should be followed closely 2 Always unplug the units AC power cord from the AC power source before attempting to remove or reinstall any component or assembly b disconnect PCB plugs or connectors c connect all test components in parallel with an electrolytic capacitor 3 after servicing always check that the screws components and wiring have been correctly rei
10. 3 Ze 5 roue HAV ADS R712 E sev 16v gt FREED Ge Ke DICH oe 0704 Die 400v 14 29 945 D FOCUS dodi SUSPEND suspend Pu oss oor va 72 is L304 uF4904 1 DY LED Dien pwa 28 1 827 25 gt 4 See 220P 2k 3 4 7 SW E 10U R505 16 27 1 2K 3 206 2200 P ow 705 jJ 3 40 NOK IPEA 0 20 250v D702 22 ee 4 C207 R210 m 25 1N4007 C208 e2UM 15 PROTECTION 5 een 4 M 0706 0 00470 M 123 19 dnd R531 _ 51 52 55 gt ane 180 R211 R213 R209 zl wm 50 0707 ET mE R212 8215 470 22 5 9 27kF 0 62 1W CN201 XS KEY A B C m 2 IT 0701 10 50V A R530 20501 dk 3 29 4 We R214 C209 R217 22K 5 6V Hi 709 47KF 4 70 8 2K 512 C513 0 680 250v 4 34K 38L H H JH mo 22 Sov 229 Sov WO 1 R728 R535 51 8727 oe 0704 gt A 4 A E H DY 6 3v 242 9709 12 ane em Ser R730 2 2 517 1 502 gt 4 1 2 SCH ues CN202 WA R724 6 270 250 SCT 820 L602 12 2 1 2K 100k cni 1 T 12 6 9 Ka 5v 1703 350V 87 m BEAD ee IT 32 A oia Ld 8 1 301 22422 BEAD er 5 57 9118 Taser 18883 0582 R301 R302 I 104148 2 560 C607 4 1601 H SYN
11. 4 2 Display Control Adjustment Click on the MENU button OSD MENU This menu is user s OSD manual user s manual 210 11 1 27 LIKI BRIGHTNESS 31 4KHz 60Hz 1 Click on the MENU button 2 Click on the UP or DOWN and move any function control 3 Press the MENU SELECT button UP or DOWN button is used to control the value of any function A 5 When you press exit button the MENU disappears 4 2 1 Screen center adjustment width 520mm height 400mm signal 640 480 60Hz 4 0mm C D lt 4 0mm DISPLAY AREA SQUARE CORNER a Horizontal size adjustment adjustment use to H SIZE 520 3mm 11 b Vertical size adjustment adjustment use to V SIZE 400 3mm c Horizontal position adjustment adjustment use to H POS d Vertical position adjustment 4 2 2 Trapezoid adjustment frequency all mode signal pattern cross hatch A MCN A B lt 2 5mm 4 2 3 Pin balance adjustment frequency all mode signal pattern cross hatch D1 102 1mm 7 7 4 2 4 Parallelogram adjustment frequency all mode signal pattern cross hatch 5mm 12 4 2 5 Side pin cushion adjustment C2 frequency all mode signal pattern cross hatch brightness MIN cut off contrast MAX D1
12. Consumption Nomal Operation Input Current at 120V Input Current at 240V lt 100 Watts Operating 1 5 rms Turn on lt 30Amps Peak Operating lt 0 8Amps rms Turn on lt 60Amps Peak Linearity Cross Pattern Horizontal 8 Vertical 10 Environment Temperature Humidity Operating 0 to 40 Storage 40 to 60 C Operating 10 to 85 Storage 5 to 95 2 2 D SUB SIGNAL CABLE SPECIFICATION VGA SVGA CONNECTION D SUB 15PIN IBM PC WIRE COLOR ep CONN 6P conn 1 RED RED COAX IN 6P 4 2 GREEN COAX IN 6P CONN 5 3 BLUE BLUE COAX IN 6P CONN 6 4 N C 5 BLACK 6P CONN 3 6 RED GND 7 GREEN GND RING WIRE 8 BLUE GND 5 9 N C 10 ID 11 N C 3 12 SDA 13 H SYNC C S ORANGE 6P CONN 1 14 V SYNC WHITE 6P CONN 2 15 SCL SHELL GND RING WIRE CGA EGA CONNECTION CGA SLOT ZAMMA _ WIRE COLOR 6P CONN 6P Conn P MARK 1 H SYNC WHITE 6P CONN 1 16 V SYNC YELLOW 6P CONN 2 28 f GND amp SHELL BLACK 6P CONN 3 T BLUE BLUE 6P CONN 4 17 GREEN GREEN 6P CONN 5 U RED RED 6P CONN 6 2 3 TIMING CHART HORIZONTAL LINE TIME TOTAL BACK PORCH FRONT PORCH FRAME TIME TOTAL VERTICAL HORIZONTAL SYNC WIDTH D ACTIVE TIME VERTICAL SYNC WIDTH
13. D2 C1 11 1 2 1 x20mm D1 1 102 lt 2 0mm 4 2 6 Tilt adjustment frequency all mode signal pattern cross hatch brightness MIN cut off contrast MAX 4 2 7 Degaussing adjustment Don t adjust the degaussing Degaussing is possible in OSD adjustment menu After using this function once You must use again after at least 30minutes 4 2 8 SAVE ADJUSTMENT CONDITION amp REMOVE USER MODE 13 4 3 Color adjustment 4 3 1 color temperature Set condition measuring instrument color analyzer CA 100 frequency 640 480 60Hz display pattern full white one square 25 window brightness cut off contrast MAX specification 9300K x 0 281 0 02 0 311 0 02 6500K 0 313 0 02 y 0 329 0 02 4 3 2 color adjustment 9300 a Back raster color adjustment Set condition frequency 640 480 60 display pattern back raster pattern brightness MIN cut off contrast MAX Select factory mode Select COLOR TEMP with UP DOWN key Select 9300K Adjust back raster brightness to 0 01 0 02 F L with VR601 Select with UP DOWN adjust 0 311 and do the next selection with EXIT key Select R B with UP DOWN adjust x 0 281 and do the next selection with EXIT key white balance ACL adjustment Set condition frequency 640 480 60Hz display pattern one square 25 window full white brightness MIN cut
14. and compartment cover or shields isolation resistor capacitor networks mechanical insulations etc 3 To be sure that no shock hazard exists check for leakage current in the following manner a Plug the AC line cord directly into a 120 or 230 Volt AC outlet Do not use an isolation transformer for this test Using two clip leads connect a 1 5K9 10Watt resistor paralleled by a 0 15Uf capacitor in serial with an exposed metal chassis part and a known earth ground such as an electrical conductor and electrical ground connected to a earth ground Use a SSVM or VOM with 1000 ohms per volt or sensitivity to measure the AC voltage drop across the resistor Connect the resistor to an exposed metal part having a return path to the chassis metal cabinet screw heads knobs shafts escutcheon etc and measure the AC voltage drop across the resistor Any reading of 5 25 volt RMS this corresponds to 3 5 milliampere AC or more is excessive and indicates a potential shock hazard Correct the shock hazard before returning the monitor to the user READING SHOULD NOT BE ABOVE 0 5mA LEAKAGE TEST ALL UNDER EXPOSED METAL TESTER TEST SURFACES 2 WIRE CORD ALSO TEST WITH PLUG REVERSED USING ADAPTER PLUG AS REQUIRED ari Earth ground Figure 1 1 Leakage Current Test Circuit 1 1 3 Product safety notices
15. focus of whole screen to be the best fitted with FOCUS V R in FBT 4 3 6 PURITY adjustment Purity is that unnecessary colors appear in the screen except displayed color Don t appear unnecessary colors divided with the naked eye at a distance of 50cm from CRT surface 16 set condition direction east frequency included timing chart display pattern full white brightness MIN cut off display center Most suitable RED x 0 640 0 015 y 0 323 0 015 GREEN x 0 295 0 015 y 0 594 0 015 BLUE x 0 142 0 015 y 0 066 0 015 17 5 1 Troubleshooting Guide NOTES 1 If picture does not appear fully rotate the brightness and contrast controls clockwise 2 Check the following circuits No raster appear power circuit Horizontal output circuit High voltage control circuit and output circuit High voltage develops but no raster appears Video output circuit High voltage does not develop Horizontal output circuit 5 2 1 No Raster No Video No Power Measure 80V output between cathode of D110 and Ground Does appear 80V DC NO Check and replace F101 IC103 5 2 2 S Correction failure YES Check the other secondary outputs 250V 130V 80V 12V 12V 12V 6 3V 5V Lines Does each output appear p Check and replace D104 D105 D106 l ges D108 1C103 1C101 Horizontal circuits Check V
16. 00v N4148 144148 144148 RB03 100 15K 1 2uH 2 X N ar AN E GC 14 14 1 140 m ESA los 3 2 M zm rer 12 R 80 15 a AM Aen deeg can onn gt 09 B OUT Q Q 5 uk 100V 100 1 24 102 L101 lios 199 RB18R p 2200pF 2200pF 5 14 0104 sech 1 1 Tee E cus 10 1748 Oger 250VAC oc 18 Ugen Or aa Ba MEET AM N T Log gt 17 16000 224pF 275VAC 2 0105 16 4 et 02 6 t UF5404 100 caos Zoe qe 174 cus R111 we 223 m Gs 2200 soav 3111 8 0166 0 5404 pu 22 e o 6 3V t 1 44 d RB3SR T102 15 RIS lt 308229 08228 je 56k 3 1 48 at owl 2 0187 p 10118 22 28 ver F 120F F 120F zg 1N4148 1 sov 1 2511 6 jee CH Ze 1 t KSP2222A sti 4700 14V Lee 16v ho m mom t 100 0807 oses razor Razin cazar 1 20 en 0121 KSP44 nase S iin fe EN aw Em I lon 2206 2K 8 31676 130V 2 58 afa 4 68 1 40 160v S 0120 3154 0 220 527 1 48 0109 0 4004 12 1 R108 L 27 1105 160v 150 EH 88196 mon TUA 0114 BEA
17. C 2 1 12244 1 4w H FLY R733 0696 1 R612 LC606 R613 R609 5 1K 470 22K FFA 76418U 9 IB SYNC 2 jH S v Focus f T os cne 750 4 4 5 6k MEA so DE spat UFAQD4 100P 1k 50V 5 4 8614 1 8304 100 e l 4 ene sav Se aun 470 63V MP 8733 Scour e FCt ya 12V 0 0033 0705 0611 Aa 4 1 9822 0608 100k 0605 cses data Seng Ii 720 M Y put 2N3904 m Eech me bees ee 0470 63V C609 0604 Sher ff 0607 5551050 E 0305 6 27 5 MP a56U M T 21390 5 b HE 1004 nud m C302 Tee teav pp 59 o ES 12777 0788 HIS 0610 51025008 TU SON HGND gt V IRC 8736 lt 8737 E C613 R621 Zem open s R307 S R738 ZS 1704 75 6 8K 0613 6 8K 0612 za R617 1 R306 S x ray C724 1703 047 2W 0712 BEAD 123 144148 4 ter afte UF4004 9 1 2K C307 R309 330 50v HDT 82 wu 26820 cs T en 1 5 XL pur ew our f e pcs 2737 9714 2 10 2 0470 6 2 1 E CN ATSSYC 144148 1 KA75008 dicm SE 1 wl ps 330 50 _ ger 91976 1 R752 0708 H E 667 0 0616 0 0560 M ZS C7 0728 127 1245 C614 C616 3 0 Vineet R622 oar S A V CAP A 34 900470 9 0047 8910 0723 Soa Sie 2200 E IR S
18. COLOR MONITOR KI 2914DF 5 MANUAL CONTENTS 1 PRECAUTIONS 2 2 PRODUCT SPECIFICATION 5 3 OPERATING INSTRUCTION 8 4 ADJUSTMENTS 10 5 TROUBLE SHOOTING GUIDE 18 6 BLOCK DIAGRAM 33 7 CONNECTING DIAGRAM 34 8 SCHEMATIC 35 9 PRINT CIRCUIT BOARD 37 1 1 Safety precautions Warnings Service should not be attempted by anyone unfamiliar with the necessary on this Monitor The followings are the necessary precautions to be observed before servicing 1 For continued safety do not attempt to modify the circuit board 2 Disconnect the AC power before servicing 3 When the chassis is operating semiconductor heat sinks are potential shock hazards 1 1 1 Servicing the high voltage volume are CRT Warnings A High Voltage volume replaced in the wrong direction may cause excessive X Ray emissions 1 Adjust in order to 26 5KV with signal at Anode 2 When the troubleshooting a monitor with excessively High Voltage avoid being unnecessarily close to the monitor Do not operate the monitor for longer than is necessary to locate the cause of exces
19. D 1 4 196 to OH E T m owe 27065 YF 5 125 T103 184148 Sens BEAD 1 2 wrese2 ime 1 ic weut 1952 4 ribs pile 0 80V gt s t g Too S eo Vi i 3E pe eas 887 oy iiit 7 G CUT GAIN PM REI 7 190 2 gt FO PP Yk SDA 1 270 100v 2TETS7 J E 2 pe 172w 51888 Van EB er an mzs 0112 0113 4 i Cisev gt 81 E care 2580052 e 6 31666 g DES v Zei 38 12 130V KSP44 0115 551 250V 2 4 en Ay Rai 129 d 1 1 Ze V FLY OF V FLY_ gt june mu chi db EX B CUT GAIN Ej 25000 HEALY LO gt D Jem p n 12 17 1 4007 8 S d E A 27885 15 H our Ux gt Le pesh ue Im T 140 SCH act gt BO in t E 556 0117 user 6 gt SE EEN Go me R126 a811 ran Zem gt 150KF 109 Beo R125 Wet 59 390 172W 53 BO Ow gt nen Yoo 222522 5128 1M 172W 1 J 4 7 GBUGJL R124 C106 On mus 1 20 E Wy 4 W R8228 8238 heap M NOT RB27 zer UK C138 C135 1K 2N3904 0801 2200 5127 s d 23904 O 20
20. S used to increase the value of any selected control used to locate to the next control item for select DOWN This button This button select S S used to decrease the value of any selected control used to locate to the previous control item for 4 1 Adjustment Control 4 1 1 Before making Adjustments 1 Orientation When servicing always face the monitor to east 2 Warm up time The monitor must be on for 30 minutes before starting alignment Warm up time is especially critical in color temperature and white balance adjustments 3 Signal Analog 0 714Vp p positive at 750 internal termination 4 High Voltage Adjustment Signal without signal Adjustment 26 5KV 0 5 PROCEDURE D Disconnect the AC line cord from the power source 2 Connect positive end of High Voltage probe to anode cap of CRT negative end of to GND main chassis 3 First of all Disconnect AC cord and than disconnect High voltage probe 5 Screen Voltage signal 640 480 60Hz Full white Bright max Contrast max Adjustment SAMSUNG SDI 600 20V 4 1 2 TURN ON THE FACTORY OSD MANUAL METHOD 1 press on the UP key 2 connect the AC line cord from the power source 3 At this time OSD menu changed factory mode Ae Lunge p EVE HV AC Jos oer VF 5 Ies 4 BRIGHTNESS 31 4KHz 10
21. eck and replace 1 201 emm 7 3 Sr 7 11v moa 4 7 07 190 201 5 pin 201 1 97 ME SWITCHING Imre mL SSC SOCKET T 8912698 SWITCHING 93V INPUT MODE o CNN POWER 14V pete PROCE R LINE BRIDGE m gt 14V WT6802 FILTER supply Pav 74 7 uu 2221 FEEDBACK m gt 130V 3 DEGAUSSING CONTROL 7 250 1 E I 2 I DPM S OUTPUT DPMS OUTP VERTICAL SUSPEND SYNC DEFLECTION YOKE I FF _ _ OUTPUT J TON ORE Linn PROCESSOR OUTPUT HIGH MICRO TDA8172 VOLTAGE LED noL CONTROLLER STV6888 CONTROL BRIT or SCREEN UN SYNC TDA9116 HORIZONTAL eb DRIVE ___ ____ Lee s CIRCUIT y DYNAMIC P ADIIT DES CIRCUIT ADJUST KEY gt EE 2 ON wm mg 2 1 BRIGHT aa CONTROL DDC ap o 2 SIZE POSI eus e 1 5 VOLTAGE mea CONTROL PARA i CON HIGH VOLTAGE HIGH M PIN BAL EN 2 DRIVE OUTPUT VOLTAGE ACL MEME STAGE 2 REGULATION 1 TILT COIL DEG mM ONE 28
22. eege d 8745 2 0714 T 501 16v 50 2 R310 wp FOCUS L 0220 17 1 6 ZS 5 Y nias 4 0615 wi 27 eg Ki Ba R601 za 0 47 IC601 A Rosa UF4007 ht lt la at we cap 23 veau Ka Cs Us SE apne 06145 ia 0312 470 Sev pend 12 0 00470 1 fcon weee R746 54 pr 36 9 p 2 xl e NA EA L301 VRB D LR 63V 74 wie 4 7 174W Soe 2 5 fe ACL OU Koch 5 REG IN 7 1 R632 m iz R312 2 7K Isense our 300 R 03 77 ek C021 R634 cu D FOCUS R631 lt R629 C618 7 q sese HEHT 4 5 e72 470 C620 2 4 4 Gm 4 SK 3 30 50 3 30 50V 4 27K wm 6313 R308 3 0759 1 Mw 4 56601 120P 6 8K 2 R749 C734 SE 2200 0617 bat ai id xe T 0 GN 1N4148 EN 5 0736 6735 75K sov 100v PP
23. ferent values Q403 Q401 Q402 ES Check and replace R COIL of the CPT 5 2 5 Misconvergence Failure Try readjusting convergence Is the convergence YES now within spec Done NO SN YES Readjusting convergence Done 20 5 2 6 H Linearity Failure Check pin 36 of IC502 output YA varies with different value Check and replace 1 502 DC 0V 5V ES Check Q702 Q701 output NO varies with different value 0702 0701 ES I gt Check L304 output LAN ZN varies with different value 1304 5 2 7 High Voltage Failure Does 900Vp p fly back pulse NO Check and replace appear on pin 1 of FBT Q704 D708 R716 yYES Sei Q602 606 base driving pulse exist Check 12V Q602 606 zs 0603 drain pulse exist Check and replace Q603 YES 0603 gate pulse exist Check and replace D608 610 Pin 9 of 602 pulse exist Replace IC602 72077 J 7 08 72077 160 A 17 9 20 10 00 10 00 Q602 Q606 BASE FBT 1pin 2 5 2 8 User control Failure Others Check the voltage at pin 21 of 502 Normal 5V Push the EXIT Key 0 5V Push the SEL Key 1 5V Push the UP Key 3 5V Push the DOWN Key 2 5V wo Check and replace R406 R408 R409 R410
24. ideo and y Check 51 52 53 signals refer to S correction table on the schematic 5 TABLE emi 4 51 52 53 Li P H 1 e PETTEE Safes 2 17 28K L L H aec IC103 1pin 29 344K 4 34 40K H 51 52 53 signal are right at each frequency block NO le Check and replace es Check and replace Q704 707 709 703 706 708 18 5 2 3 Degaussing failure Check degauss Connector CN102 yes Check output voltage at pin 12 of 12502 Mo Normal Degaussing 5V Replace 16502 Does DC voltage right Check and replace Q101 D101 RL101 R101 5 2 3 Purity failure Degaussing Purity is YES Done NO Degaussing circuit NQ is right Refer to 5 2 2 Le Replace CRT and verify purity 19 5 2 4 Rotation Failure Check tilt connection CN402 IC 502 pin 35 output varies Is the convergence now within spec Change CPT and readjusting convergence with different values 502 DC 0 5 Q403 Q401 Q402 NO Check and replace varies with dif
25. nstalled Make sure that the area around the serviced part has not been damaged 4 Check the insulation between the blades of the AC plug and accessible conductive parts examples metal panels input terminals and earphone jacks 5 Never defeat any of the B voltage interlocks Do not apply AC power to the unit or any of its assemblies unless all solid state heat sinks are correctly installed 6 Always connect a test instruments ground lead to the instrument chassis ground before connecting the lead always remove the instruments lead last 2 1 SPECIFICATION CDT Tube Dyna flat option Size 73cm 29 diagonal Viewable Image Size 60 5cm 24 Dot Pitch 0 76mm H Deflection Angle 110 Focusing Method Single Focusing static amp dynamic Bandwidth Maximum 50MHz Scanning Frequency Horizontal 15 40KHz Auto Scanning Vertical 50 120Hz Display Area Normal 550 400 580 410 Microprocessor User Saving Mode 6 Modes User Control Display OSD CONTROL Position Size Pincushion Trapezoid H Vcorner Pin B Trapezoid Parallel Tilt Moire Zoom Color Temperature Recall Manual Degauss Eng Ger Fra Esp Port Display color Color Temperature 9300 K 6500 K User Color Resolution Maximum Mode 800 X 600 60Hz Signal Input Connect 15 pin D sub Female or Option Safety amp EMC Safety cUL CE EMC FCC CE Power Free Voltage 90 264 60 50 2 Power
26. off contrast MAX 14 Select factory mode Select COLOR TEMP with UP DOWN key Select 9300K Select B G with UP DOWN adjust y 0 311 and do the next selection with EXIT key Select R G with UP DOWN adjust x 0 281 and do the next selection with EXIT key 7 Select contrast icon with UP DOWN key adjust contrast to 50 60 with UP DOWN key front cabinet a 20 window pattern 8 Select ACL key A C in full white pattern and adjust ACL to 28 301 front cabinet full white back raster x attention If 50 doesn t adjust in 20 window adjust G G again with DOWN key 4 3 3 color adjustment 6500 a white balance adjustment 1 Select factory mode 2 Select COLOR TEMP with UP DOWN key 3 Select 6500K 15 4 Select B G with UP DOWN adjust 0 329 and do the next selection with EXIT key 6 Select R G with UP DOWN adjust x 0 313 and do the next selection with EXIT key 4 3 4 brightness uniformity adjustment set condition frequency 640 480 60 display pattern 9 ball pattern brightness MIN cut off contrast MAX Measure nine brightness display in the screen front cabinet e 4 3 5 Focus adjustment set condition frequency 640 480 60Hz display pattern H character brightness min cut off contrast max 1 Adjust in
27. sive voltage 3 Excessive High Voltage can produce potentially hazardous X Ray RADIA TION To avoid such hazards the high voltage must be above the specified limit The nominal value of the High voltage of this Monitor is 26 5KV 0 3KV at zero beam current minimum brightness under a 120V AC power source The High Voltage must not under any circumstances exceed 29KV Each time a monitor requires servicing the High Voltage should be checked following the High Voltage check procedure on this manual It is recommended the reading of the voltage be recorded as a part of the service record It is important to use an accurate and reliable High Voltage meter 4 When the High Voltage regulator is operating properly there is no possib of an X Ray problem 5 The CRT is especially designed to prohibit X ray emission To ensure continued X ray protection replace the CRT only with one that is the same or equivalent type as the original 6 Handle the CRT only when wearing shatterproof goggles and after completely 7 Do not lift the CRT by the neck 1 1 2 Fire and Shock Hazard Before returning the monitor to the user perform the following safety checks 1 Inspect each lead dress to make certain that the leads are not pinched or that hardware is not lodged between the chassis and other metal parts in the monitor Inspect all protective devices such as nonmetallic control knobs insulating materials cabinet backs adjustment
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