Dell E773c Series, Service Manual

Page 1: ...R REPAIR SERVICE INFORMATION ONLY EVERY REASONABLE EFFORT HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL WE CANNOT GUARANTEE THE ACCURACY OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS LIABILITY FOR CHANGES ERRORS OR OMISSIONS MANUFACTURE DATE MAY 2005 ...

Page 2: ... METHOD 8 11 4 4 EDID CONTENTS 5 CIRCUIT DESCRIPTION 12 5 1 MICRO CONTROLLER CIRCUIT 12 5 2 DEFLECTION CIRCUIT 12 5 3 TRANSISTOR DIODE CIRCUIT 13 6 TROUBLE SHOOTING CHART 14 6 1 NO POWER 14 6 2 NO RASTER NO HIGH VOLTAGE INDICATOR IS ORANGE 15 6 3 NO RASTER INDICATOR IS GREEN 16 18 6 4 H SIZE FAILS TO BE ADJUSTED 19 6 5 BAD FOCUS 19 7 MECHANICAL OF CABINET FRONT DIS ASSEMBLY 20 8 BOM LIST 21 36 9 B...

Page 3: ...esolution 720 400 640 480 640 480 800 600 H KHz 31 327 31 469 43 3 46 875 V Hz 69 616 59 943 85 00 75 00 Factory Preset 5 6 7 8 Resolution 800 600 1024 768 1024 768 1152 864 H KHz 53 674 60 023 68 677 67 500 V Hz 85 061 75 029 84 997 75 000 6 Scanning Frequencies Horizontal 30KHz 70KHz Vertical 50 Hz 160 Hz 7 Factory Preset Timings 8 User Timings 8 8 Video Bandwidth 110 MHz 9 Power Source Switchin...

Page 4: ...owing approvals EN 55022 class B and EN 55024 EN 61000 3 2 EN61000 3 3 Test procedures Standards Requirements frequency range Remarks Conducted power line emission EN 55022 Class B FCC Part 15 Subq B 150 kHz 30 MHz 450 kHz 30 MHz Radiation emission EN 55022 Class B FCC Part 15 Subq B 30 MHz 1 GHz 30 MHz 1 GHz 30 MHz 2 GHz if clock 108 MHz Electrostatic ESD EN 55024 IEC61000 4 2 no functional distu...

Page 5: ... VR etc which were sealed by the manufacturer once their optimum position has been set please don t dismantle them as your likes otherwise you will break or damage the component If you need replace the parts with sealed control please adjust the relative VR to make sure the B voltage about 66 0V and well seal it with A B glue or equivalent which you can not move away with one screw driver 7 Before...

Page 6: ...in damage to the chassis Maintain interconnecting ground lead connections between chassis and picture tube dag when operating chassis Certain HV failures can increase X ray radiation Monitor should not be operated with HV levels exceeding the specified rating for the chassis type The maximum operating HV specified for the chassis used in this monitor is 24 8KV 1KV with a line voltage of 120 240 VA...

Page 7: ...crews on the connector to ensure firm grounding The connector information is as follow 15 Pin Color Display Signal Cable PIN NO DESCRIPTION PIN NO DESCRIPTION 1 RED 9 5V 2 GREEN 10 SYNC GND 3 BLUE 11 NC 4 NC 12 SDA 5 SFTC 13 HORIZ SYNC 6 GND R 14 VERT SYNC VCLK 7 GND G 15 SCL 8 GND B 3 Apply power to the display by turning the power switch to the ON position and allow about thirty seconds for disp...

Page 8: ... 4 3 ADJUSTMENT METHOD 1 B HV voltage adjustment A Chroma 2000 Signal generator or PC equivalent set mode 1 VGA 640X480 pattern 1 0 B Connect a DC Volt meter between D925 cathode and ground then adjust VR902 to be 65 0 VDC for CPT CRT 2 Factory preset Timings Adjustment A Press MENU Key to show OSD window press Up or Down Key to switch the functional controls B Press the Up Key to select the funct...

Page 9: ...GAIN RETURN B GAIN Tm BURN IN TIME 9300 COLOR TEMPERATURE sRGB COLOR TEMPERATURE 6500 COLOR TEMPERATURE FREQUENCY SELECT RETURN D To switches the input signal to the other Timing Mode Please follow step A C to get the optimum picture H V size 312 234mm E Select the RETURN function and press the MENU Key then the Factor Preset window will be returned to the original OSD window user s operating cond...

Page 10: ... 10 Y 80 1 cd m2 then save it into sRGB color temperature then exit factory setting area I After modulation it s necessary to check if the white balance accords with the normal specification If not which needs reset 4 Focus Adjustment A Set mode 6 1024 768 PATTERN 101 Fv 85Hz with character full page B Set for under RECALL state C Then adjust focus VR1 to a fine vertical line D Adjust focus VR2 to...

Page 11: ...m constant E Produce a white crosshatch pattern on the display F Vertical green and magenta lines are converged by varying the angle between the two tabs of the 6 pole magnets G Horizontal green and magenta lines are converged by varying the two tabs together keeping the angle between them constant 4 3 EDID CONTENTS x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 xA xB xC xD xE xF 00 00 FF FF FF FF FF FF 00 10 AC 0...

Page 12: ...MPS block and an extensive set of geometry control facilities Further the IC generates the drive waveforms for DC coupled vertical boosters to the TDA9302A Horizontal Oscillator The oscillator is of the relaxation type and requires a capacitor of C409 at pin6 The free running frequency is determined by a resistor R412 from pin8 to ground PLL 1 Phase Detector The phase detector is a standard one us...

Page 13: ...lse IC901 Power IC for Switching Power Control Build in MOS FET Q907 Q908 Use for Power Saving to Cut off 6 3V Supply Voltage Q909 Q910 Use for Power Saving to Cut off 12 5V Supply Voltage Q912 Q920 Push Pull Topology to Drive Q911 Q913 Degaussing Switcher Transistor Q904 5V Regulator Transistor Q403 HOR Driver Transistor IC403 Horizontal s correction control MOSFET Four in one Q404 Q405 As Differ...

Page 14: ...OUT 6 3V CHECK VOLTAGE OF THE CRT CHECK BRIGHTNESS CIRCUIT OK CHECK POWER SAVING CIRCUIT H SYNC V SYNC SIGNAL Q909 Q910 ABNORMAL DISPLAY CHECK SCREEN VOLTAGE ABOUT LESS THAN 300V CHECK FBT CHECK MAIN PCB POWER SUPPLY 55V 12V 80V 12 5V CHECK FAILSAFE CKT IC401 PIN 25 RELATIVE CKT CHECK CRT S HEATER RELATIVE CIRCUIT Q907 Q908 Q703 Q704 Q705 RELATIVE CKT 400V TO 600V REFER ITEM 6 2 CATHODE ABOUT 55V ...

Page 15: ...15 2 ABNORMAL VIDEO LEVEL ON SCREEN 3 ABNORMAL DDC PLUG PLAY OK NG CHECK IC101 PIN 5 VOLTAGE ABOUT 5V CHECK SIGNAL CABLE CHECK ZD901 GOOD OR FAIL OR P803 HS VS DATA OUTPUT ...

Page 16: ...16 6 2 ABNORMAL DISPLAY 1 NO SIGNAL ON SCREEN ...

Page 17: ...1 NO RASTER DISCONNECT WITH SIGNAL CABLE NG OK OK OK NG NG NG CHECK THE COLLECTOR VOLTAGE CHECK THE COLLECTOR VOLTAGE RELATIVE CIRCUIT RELATIVE CIRCUIT CHECK Q402 T401 CHECK T401 T402 Q402 Q403 D408 ABOUT 10Vpp OF Q403 ABOUT 1200Vpp AT FH 31KHz C418 C419 H DY B Q406 C401 D406 CHECK IC401 PIN 26 WAVE FORM CHECK IC401 PIN 4 6 PIN 13 CHECK IC401 PIN 29 ABOUT 12 VDC CHECK IC401 PIN 29 RELATIVE CIRCUIT...

Page 18: ... OF Q404 Q405 Q406 CHECK THE RELATIVE CIRCUIT OF SMPS READJUST H WIDTH FUNCTION CHECK THE HV OF CRT ABOUT 24 5KV CHECK FBT B VOLTAGE ABOUT 62V AT FH 31KHz NG OK 2 ABNORMAL HORIZONTAL VIDEO CENTER 3 ABNORMAL HORIZONTAL LINEARITY CHECK IC401 PIN5 12 RELATIVE CIRCUIT CHECK L401 AND C430 OR R456 RELATIVE CIRCUIT ...

Page 19: ...PIN19 20 21 22 23 RELATIVE CIRCUIT CHECK IC601 OUTPUT AND CRT RELATIVE CIRCUIT OR DY CHECK THE IC601 PIN 2 ABOUT 11 8V PIN 4 ABOUT 12V CHECK D601 C605 2 VERTICAL CENTER NG READJUST V CENTER RELATIVE CKT CHECK IC401 AND IC601 6 7 SIDE PIN CUSHION DISTORTION NG READJUST SIDEPIN CHECK IC401 Q404 Q405 Q406 RELATIVE CKT 6 8 POOR FOCUS NG READJUST FOCUS CONTROL CHECK FOCUS CONTROL UNIT FOCUS LEAD WIRE C...

Page 20: ...OUTPUT NG OK NG OK OK NG NG OK OK NG OK NG YES NO CHECK BRIDGE RECTIFIED CIRCUIT CHECK IC901 PIN4 VOLAGEABOUT 32V CHECK IC401 CHECK D919 CHECK Q911 Q911 FAILURE CHECK IC901 CHECKAC LINE VOLT 120V OR 220V CHECK F901 SW901 CHECK LINE RECTIFIED SMOOTHED VOLT CHECK T901 O P MAKE SURE THAT THE VARIABLE OUTPUT IS NOT SHORTED OK PIN 14 15 16 28 B DRIVER IC401 29 ABOUT 11 5V CHECK 56V 14V 6 3V 12V CIRCUIT...

Page 21: ...21 7 MECHANICAL OF CABINET FRONT DIS ASSEMBLY ...

Page 22: ... N LABEL 1 PCS 40C 581700 3A6444 CARTON LABEL 1 PCS 40C2064700 1 ID LABEL 1 PCS 41C 68700 A QSG 1 PCS 44C6779 1 6131 EOS CUSHION 1 PCS 44C6779 2 6131 EPS CUSHION 1 PCS 44C6779700 4B CARTON 1 PCS 45C 76 28 RN PE BAG FOR MANUAL 1 PCS 45C 76 34 RN6312 PE BAG FOR BASE 1 PCS 45C 88 7 RN6312 MONITOR PE BAG 1 PCS 50C 502 2 6411 PLASTIC TIE 4 PCS 50C 502 5 6411 CABLE TIC 1 PCS 51C 6 4502 SILICON 9 G 52C 1...

Page 23: ...140 7128 SCREW 4X7 FOR AC 1 PCS M1C1140 6128 SCREW 1 PCS 705C774BC56 1D WT CPU ASS Y 1 PCS 705C774BC5602D IC901 ASS Y 1 PCS 705C774BC57 3D Q911 ASS Y 1 PCS 705C774BC5701D Q403 Q406 D408 ASS Y 1 PCS 705C774BC6101D NR901 ASS Y 1 PCS 705C774BC84 2D F901 ASS Y 1 PCS 705C774BC8701D AC SOCKET ASS Y 1 PCS 705C774BC9301D D919 ASS Y 1 PCS SW10 1 77C 602 1 CJ TACT SWITCH TSVB 2 T NP 1 PCS SW10 2 77C 602 1 C...

Page 24: ... 400V 1 PCS CN902 33C3074 1 2P PLUG 1 PCS CN903 33C3803 3 WAFER EH E 1 PCS D901 93C 5255P52T 1N5408 PEC 1 PCS D902 93C 5255P52T 1N5408 PEC 1 PCS D903 93C 5255P52T 1N5408 PEC 1 PCS D904 93C 5255P52T 1N5408 PEC 1 PCS D922 93C30408AT RG 4S 1 PCS D925 93C30408AT RG 4S 1 PCS DF901 71C 55 2 A A FERRITE BEAD 3 5 1 5 2 PCS DF902 71C 55 2 A A FERRITE BEAD 3 5 1 5 2 PCS DF903 71C 55 2 A A FERRITE BEAD 3 5 1...

Page 25: ... OHM 5 1W 1 PCS R927 61C 208333 64 MOFR 33K OHM 5 1W 1 PCS R929 61C152M228 64 MOFR 0 22 OHM 5 2W 1 PCS R939 61A212Y75452T 750KOHM 1 2W 1 PCS RY901 77C 260 5 4 RELAY 1 PCS SG489 62C 10 16 J SPARK GAP 1KV 500 100V 1 PCS SS1 95C2070548 WIRE 1 PCS SW901 77C411A 2 CJ MINI PUSH SWITCH 1 PCS T401 79C 167125 LS DRIVER TRANSFORMER 1 PCS T402 79A 774 1 BG FLYBACK TRANSFOMER 1 PCS T403 79C 167124 H DRIVER TR...

Page 26: ...C 450104 7T 0 1UF 80 20 50V Y5V 1 PCS C409 64C700J1020AT PEN 0 001UF 50V 5 1 PCS C410 64C178J154 1T C121X 0 15UF 100V 5 1 PCS C411 64C178J104 1T C121X 0 1UF 100V 5 1 PCS C412 65C 44215113T6921 150PF 5 NPO 50V 1 PCS C413 65C 450104 3T 0 1UF 50V Y5V 1 PCS C414 64C178J474 1T C121X 0 47UF 100V 5 1 PCS C415 64C 44J4721AT 4700PF 100V PEI 1 PCS C416 65C 1K102 5T6921 1NF 1KV Y5P 10 1 PCS C417 64C178J224 1...

Page 27: ...5 NPO 50V 1 PCS C701 65C 1K101 5T6921 100PF 1KV Y5P 10 1 PCS C703 64C178J472 1T 4700PF 100V 1 PCS C704 65C 1K151 5T6921 150PF 1KV Y5P 10 1 PCS C710 64C178J473 2T C121X 0 047UF 250V 5 1 PCS C720 65C 1K102 5T6921 1NF 1KV Y5P 10 1 PCS C740 65C 2K102 5T6921 1000PF 2KV 1 PCS C741 65C 444331 5T 330PF 10 50V 1 PCS C743 67C 309100 7T 10UF 20 50V 1 PCS C908 65C 450104 7T 0 1UF 80 20 50V Y5V 1 PCS C910 67C ...

Page 28: ... FR107 1 PCS D427 93C 5247T52T 1N4004 1 PCS D450 93C 64 1152T IN4148 1 PCS D470 93C 6026T52T RECTIFIER DIODE FR107 1 PCS D471 93C 5247T52T 1N4004 1 PCS D472 93C 5247T52T 1N4004 1 PCS D474 93C 6026T52T RECTIFIER DIODE FR107 1 PCS D601 93C 5247T52T 1N4004 1 PCS D602 93C 64 1152T IN4148 1 PCS D603 93C 64 1152T IN4148 1 PCS D706 93C 6044T52T RECTIFIER DIODE FR157S 1 PCS D740 93C1040 252T UF4004 1 PCS ...

Page 29: ...100 61C 60210352T CFR 10K OHM 5 1 6W 1 PCS R101 61C 60210252T CFR 1K OHM 5 1 6W 1 PCS R102 61C 60262152T CFR 620 OHM 5 1 6W 1 PCS R103 61C 60210152T CFR 100 OHM 5 1 6W 1 PCS R104 61C 60247252T CFR 4 7K OHM 5 1 6W 1 PCS R105 61C 60210152T CFR 100 OHM 5 1 6W 1 PCS R106 61C 60220252T CFR 2K OHM 5 1 6W 1 PCS R107 61C 60230352T CFR 30K OHM 5 1 6W 1 PCS R108 61C 60222252T CFR 2 2K OHM 5 1 6W 1 PCS R109 ...

Page 30: ... CFR 2 7K OHM 5 1 6W 1 PCS R182 61C 60239252T CFR 3 9K OHM 5 1 6W 1 PCS R402 61C 17212252T CFR 1 2K OHM 5 1 4W 1 PCS R403 61C 60210152T CFR 100 OHM 5 1 6W 1 PCS R404 61C 60210152T CFR 100 OHM 5 1 6W 1 PCS R405 61C 60210152T CFR 100 OHM 5 1 6W 1 PCS R406 61C 60210152T CFR 100 OHM 5 1 6W 1 PCS R410 61C175L10052T CFR 10 OHM 5 1 2W 1 PCS R411 61C 60256252T CFR 5 6KOHM 5 1 6W 1 PCS R412 61C 21051252T M...

Page 31: ...FR 12K OHM 5 1 4W 1 PCS R604 61C 20056252T MFR 5 6KOHM 1 1 4W 1 PCS R605 61C175L15952T CFR 1 5 OHM 5 1 2W 1 PCS R606 61C175L12152T CFR 120 OHM 5 1 2W 1 PCS R609 61C 21075352T 75KOHM 1 6W 1 PCS R610 61C 17212452T CFR 120K OHM 5 1 4W 1 PCS R611 61C 17212452T CFR 120K OHM 5 1 4W 1 PCS R612 61C 17222252T CFR 2 2KOHM 5 1 4W 1 PCS R613 61C 17210252T CFR 1KOHM 5 1 4W 1 PCS R615 61C 17212452T CFR 120K OHM...

Page 32: ...7K OHM 5 1 6W 1 PCS R958 61C 17210252T CFR 1KOHM 5 1 4W 1 PCS R959 61C 60210352T CFR 10K OHM 5 1 6W 1 PCS R960 61C 17247352T CFR 47K OHM 5 1 4W 1 PCS R962 61C 17247052T CFR 47 OHM 5 1 4W 1 PCS R965 61C 17247952T CFR 4 7 OHM 5 1 4W 1 PCS R966 61C 17230252T CFR 3KOHM 5 1 4W 1 PCS R967 61C175L10252T CFR 1K OHM 5 1 2W 1 PCS R968 61C 17216452T CFR 160KOHM 5 1 4W 1 PCS R969 61C 17212452T CFR 120K OHM 5 ...

Page 33: ...BEAD 3 5 1 5 1 PCS 6C 31 4 BRASS 3 PCS 715C 992 D D CRPC 1 PCS C801 64C178J104 0T CL21X0 1UF 63V 5 1 PCS C802 64C178J104 0T CL21X0 1UF 63V 5 1 PCS C803 64C178J104 0T CL21X0 1UF 63V 5 1 PCS C804 65C 450104 3T 0 1UF 50V Y5V 1 PCS C805 67C 309101 3T 100UF 20 16V 1 PCS C806 67C 309109 7T 1 0UF 20 50V 1 PCS C808 65C 44210013T 10PF 5 NPO 50V 1 PCS C809 67C 309339 7T 3 3UF 20 50V 1 PCS C810 67C 305470 7T...

Page 34: ...F 20 100V 1 PCS C871 67C 309101 3T 100UF 20 16V 1 PCS C873 65C517K102 2T6921 1000PF 10 Z5P 500V 1 PCS C875 65C 450104 7T6921 0 1UF 80 20 50V Y5V 1 PCS C876 65C 44210113T 100PF 5 NPO 50V 1 PCS C877 65C 44210113T 100PF 5 NPO 50V 1 PCS D801 93C 64 1152T IN4148 1 PCS D802 93C 64 1152T IN4148 1 PCS D803 93C 64 1152T IN4148 1 PCS D804 93C 64 1152T IN4148 1 PCS D805 93C 64 1152T IN4148 1 PCS D806 93C 64 ...

Page 35: ...CFR 100 OHM 5 1 6W 1 PCS R818 61C 60210252T CFR 1K OHM 5 1 6W 1 PCS R821 61C 60222252T CFR 2 2K OHM 5 1 6W 1 PCS R823 61C 60210252T CFR 1K OHM 5 1 6W 1 PCS R824 61C 60210252T CFR 1K OHM 5 1 6W 1 PCS R825 61C 60210252T CFR 1K OHM 5 1 6W 1 PCS R826 61C 60210352T CFR 10K OHM 5 1 6W 1 PCS R827 61C 60247252T CFR 4 7K OHM 5 1 6W 1 PCS R830 61C 60239252T CFR 3 9K OHM 5 1 6W 1 PCS R831 61C 17239352T CFR 3...

Page 36: ... 32C3028 8 MICA 1 PCS 90C 231 6 6281 HEAT SINK 1 PCS M1C1730 8128 SCREW M3x8 1 PCS Q911 57C 600512 STP8NS25 E 1 PCS 5C 71 1 TRANSISTOR HOUSING 2 PCS 32C3028504 MICA 2 PCS 90C6069505 HEAT SINK 1 PCS M1C1130 8128 SCREW 3 0X8 2 PCS M1C1730 8128 SCREW M3x8 1 PCS M1C1730 10128 SCREW M3x10 1 PCS M1C1730 12128 SCREW 2 PCS D408 93C 220 17 FMQ 2FUR LF 664 1 PCS HV1 95C2070571 WIRE 1 PCS IC601 56C 574501 E ...

Page 37: ...63C210J6442CC 0 64U 250V CAMEL 1 PCS C450 65C 1K221 1T6052 220PF 1KV 1 PCS R607 61C 208918 64 MOFR 0 91OHM 5 1W 1 PCS R751 61C 60268152T CFR 680 OHM 5 1 6W 1 PCS TP404 95C2070557 WIRE 1 PCS 750C58625AV LPD 17 0 27 TCO CV CR 1 PCS C425 63C210J2443CC 0 24uF 400V 1 PCS C428 63C210J6442CC 0 64U 250V CAMEL 1 PCS C450 95C 90 23 JUMPER 1 PCS R607 61C 208918 64 MOFR 0 91OHM 5 1W 1 PCS R751 61C 60268152T C...

Page 38: ...38 9 BLOCK DIAGRAM IC801 NT6812K ...

Page 39: ...39 9 1 BLOCK DIAGRAM SMPS ...

Page 40: ...7 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 37 12 41 42 W P MUTE B DEG Reset CS2 H LIN NC VCC CS0 V33 GND OSCO G LED OSCI ISDA ISCL VSCL KEY1 KEY2 NC NC NC NC VEHT HEHT NABL H sub Mute G1 DSDA DSCL NC WABL ROT R LED Stand by Off V out H out CS1 VSDA H I P V I P IC101 WT62P4 NT6865 ...

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Page 42: ...42 IC801 NT6812KG ...

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Page 44: ...44 IC901 STR G5643D 1 2 3 4 5 D S GND VCC OCP FB ...

Page 45: ...45 11 PCB LAYOUT ...

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Page 47: ... 47 12 CHEMATIC DIAGRA ...

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