ViewSonic E96f+SB-1, Service Manual

Page 1: ...Service Manual ViewSonic E96f SB 1 Model No VS10794 19 Digital Controlled Color Monitor E96f SB 1_SM Rev 1a Dec 2005 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 ...

Page 2: ...nd specifically disclaims any warranty of merchantability or fitness for any particular purpose Further ViewSonic reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of ViewSonic to notify any person of such revision or changes Trademarks Optiquest is a registered trademark of ViewSonic Corporation ViewSonic is a registered ...

Page 3: ...Description 6 4 Circuit Description 10 5 Adjusting Procedure 13 6 Trouble Shooting Flow Chart 18 7 Recommended Spare Parts List 24 8 Exploded Diagram And Spare Parts List 39 9 Block Diagram 41 10 Schematic Diagrams 50 11 PCB Layout Diagrams 54 ViewSonic Corporation Confidential Do Not Copy E96f SB 1 ii ...

Page 4: ...cing pay attention to original lead dress especially in the high voltage circuit If a short circuit is found replace all parts which have been overheated as a result of the short circuit 3 3 All the protective devices munt be reinstalled per original design 3 4 Soldering must be inspected for possible cold solder joints frayed leads damaged insulation solder splashes or sharp solder points Be cert...

Page 5: ...N WARNING The only potential source of X Radiation is the picture tube However when the high voltage circuit is operating properly there is no possibility of X Radiation problem The basic precaution which must be exercised is to keep the high voltage at the following factory recommended level Note It is important to use an accurate periodically calibrated high voltage meter 7 1 The procedure for a...

Page 6: ...80 640 400 800 600 1024 768 H KHz 31 347 43 269 31 469 53 000 60 023 V Hz 60 85 008 70 086 85 000 75 029 Timing 6 7 8 9 Resolution 1024 768 1280 1024 1600 1200 1152 870 H KHz 69 000 79 976 75 000 68 680 V Hz 85 000 75 025 60 000 75 000 6 Display Size Horizontal Display Size Primary Preset 352 mm 4 mm Horizontal Display Size Other Presets 352 mm 4 mm Vertical Display Size Primary Preset 264 mm 4 mm...

Page 7: ...ckage Width 445 mm 17 6 inches 540 mm Height 424 mm 16 7 inches 378 mm 14 9 inches w o base 530 mm Depth 465 mm 18 3 inches 570mm 16 External Connection 15 Pin D sub Connector AC Power Cord 17 Power Consumption Modes On 75W typical Green LED Sleep 4W Amber LED Off 2W 18 Regulatiory Safety UL CUL FCC B CB CE DHHS ICES 003 NOM TUV GS TUV Ergo MPRII GOST R SASO BSMI CCC PSB Argentina TUV S EPA Energy...

Page 8: ... firm grounding The connector information is as follow 15 Pin Color Display Signal Cable PIN NO DESCRIPTION PIN NO DESCRIPTION 1 RED V 9 5V From PC 2 GREEN V 10 Sync GND 3 BLUE V 11 NC 4 NC 12 SDA 5 GND 13 H SYNC 6 GND R 14 V SYNC 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 display tube warm up The Power On i...

Page 9: ...creen Image Use the buttons on the front control panel to display and adjust the OSD controls The OSD controls are explained at the top of the next page and are defined in Main Menu Controls on page 8 ViewSonic Corporation Confidential Do Not Copy E96f SB 1 6 ...

Page 10: ...unlocked Do the following to adjust the screen image 1 To display the Main Menu press button 1 2 To select a control you want to adjust press the arrow buttons on the front control panel of your monitor and scroll through the choices When the desired control is highlighted press button 2 NOTE Some controls on the Main Menu are listed in pairs such as Contrast Brightness Display control screen samp...

Page 11: ...he screen image Vertical Position moves the screen image up or down Pincushion curves the vertical sides of the screen image Pin Balance curves the vertical edges of the screen image to the left or right Trapezoid adjusts the top and bottom of the screen image until they have equal length Parallel slants the vertical edges of the screen image until they are parallel Tilt rotates the entire screen ...

Page 12: ...dds red to the screen image for warmer white and richer red 5000K Adds blue and green to the screen image for a darker color User Color Individual adjustments for red green and blue Moire reduces interference patterns that appear as ripples waves or unwanted background color textures Interference patterns of this type are most noticeable when viewing images having closely spaced lines or finely de...

Page 13: ... an extensive set of geometry control facilities Further the IC generates the drive waveforms for DC coupled vertical boosters to the TDA4863A H V sync signals processor The functions of the sync processor include polarity detection H SYNC V SYNC signals counting Programmable SYNC signals output free running signal generator Pin52 Pin53 are for the H SYNC and V SYNC input and the polarity are sett...

Page 14: ...be used External capacitors on XTAL1 and XTAL2 are not allowed B Control Function Block The B control block of the SAA4849 has the same behaviour as the TDA4856 with adapted threshol voltages The circuit allows the user to choose the trigger edge of the HDRV signal and the polarity of the output stage via I2 C Bus The B control function block of the SAA4849 consists of an Operational Transconducta...

Page 15: ... Output Voltage IC901 Power IC for Switching Power Control Q937 Q937 Use for Power Saving Q912 Q920 Push Pull Topology to Drive Q911 Q913 Degaussing Switcher Transistor IC903 5V Regulator IC Q403 HOR Driver Transistor Q417 Q418 Q416 Q420 Horizontal s correction control MOSFET Q406 Transistor for H Size Control Q705 Brightness Control CKT Q742 V Dynamic focus CKT Q402 Q403 Driver MOSFET Q901 MOS FE...

Page 16: ...TMENT METHOD 1 14V 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 TP901 and ground then adjust VR903to be 14VDC C Connect a DC Volt meter between TP902 and ground then adjust VR902 to be 65 5 VDC 2 Factory preset Timings Adjustment A Press Key to show OSD window press Up or Down Key to switch the function...

Page 17: ...D 9300 COLOR TEMPERATURE PIN BALANCE 6500 COLOR TEMPERATURE PARALLELOGRAM 50 COLOR TEMPERATURE ROTATION OSD EXIT HD H DRIVER COMPENSATION VG MAX V SIZE GAIN RANGE HG H SIZE GAIN H MOIRE REDUCE HS SUB H SIZE V MOIRE REDUCE TOP CORNER HL H Linearity Modify BOTTOM CORNER VF V FOCUS ADJUST ViewSonic Corporation Confidential Do Not Copy E96f SB 1 14 ...

Page 18: ... menu Key to enter second menu press the down key to select zoom about 10S then enter into factory setting area for modulation B Set R G B gain DAC value for 30 R G B bias DAC value for 30 C Raster Pattern Brightness contrast ratio MAX adjust G2 make Y 3 0 0 3 cd m2 adjust R or B bias make x 260 10 y 290 1 then save it into 9300K 6500K 5000K color temprature D Set the value of LH is 3 E Small whit...

Page 19: ...with the normal specification If not which needs reset REMARK 1 Adjust white Balance fix to G Bias 2 white Balance test spec 4 Focus Adjustment A under 1024 768 Fv 85Hz with character full page B Adjust brightness to center and contrast to max C Then adjust focus VR1 to a fine vertical line D Adjust focus VR2 to a fine horizontal line E Repeat step C D then fix the Focus VR G2 VR 5 Purity Adjustme...

Page 20: ...ing the angle between the two tabs of the 4 pole magnets on the PCM assembly See above diagrams D Horizontal red and blue lines are converged by varying the two tabs together keeping the angle between them 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 a...

Page 21: ...5 26 5KV PLEASE CHECK POWER SAVING CIRCUIT OR POWER SUPPLY CIRCUIT ENTER POWER OR POWER CIRCUIT FAIL CHECK THE HEATER VOLTAGE AT CRT SOCKET ABOUT 6 3V CHECK THE 6 3V SUPPLY CIRCUIT Q906 ZD902 CHECK THE CIRCUIT OF PIN 18 20 OF IC101 CHECK G2 VOLTAGE ABOUT 550 650V CHECK FBT CHECK THE G1 VOLTAGE ABOUT 16V AT BRIGHTNESS MAX CHECK THE G1 CONTROL CIRCUIT Q705 RELATIVE CIRCUIT CHECK THE CATHODE VOLTAGE ...

Page 22: ...CK THE RELATIVE CIRCUIT OF IC802 OK OK OK OK NG NG NG NG NG CHECK THE VOLTAGE AT PIN10 14 17 22 OF IC801 ABOUT 5V CHECK 5V SUPPLY CIRCUIT CHECK THE VOLTAGE OF IC801 PIN23 24 25 ABOUT 4VP P CHECK THE RELATIVE CIRCUIT OF IC801 PIN23 25 24 OR THE IC801 FAIL CHECK THE VOLTAGE OF IC802 PIN12 ABOUT 83V AND IC802 PIN2 ABOUT 12V CHECK THE 83V 12V SUPPLY CIRCUIT OR MAIN BOARD CHECK THE VOLTAGE OF CRT CATHO...

Page 23: ...EO CHECK THE VOLTAGE OF IC101 PIN16 ABOUT 5VDC CHECK RELATIVE CIRCUIT OF IC902 LM7805 CHECK THE WAVEFORM OF IC101 PIN20 ABOUT 3VP P CHECK RELATIVE CIRCUIT OF IC101 PIN20 CHECK THE COLLECTOR VOLTAGE OF Q402 ABOUT 12VP P CHECK Q402 T401 RELATIVE CIRCUIT CHECK THE COLLECTOR VOLTAGE OF Q403 ABOUT 1100V CHECK FBT D408 C418 C419 OK OK OK NG NG NG NG ViewSonic Corporation Confidential Do Not Copy E96f SB...

Page 24: ...VE CIRCUIT NG READJUST V SIZE FUNCTION VALUE CHECK THE VOLTAGE OF IC101 RELATIVE CIRCUIT CHECK IC101 PIN33 34 CHECK THE IC601 PIN1 ABOUT 11 8V PIN 4 ABOUT 12V CHECK D601 C605 READJUST H SIZE FUNCTION CHECK RELATION CIRCUIT OF Q406 CHECK B VOLTAGE ABOUT 125 5V AT H FREQUENCY 68KHZ CHECK B SUPPLY CIRCUIT CHECK THE HIGH VOLTAGE ABOUT 25 5 26 5V REFERENCE TO ITEM7 NG NG OK OK NG ViewSonic Corporation ...

Page 25: ...CUSHION DISTORTION READJUST FOCUS CONTROL NG CHECK FOCUS CONTROL UNIT FOCUS LEAD WIRE CRT SOCKET CRT 6 12 POOR FOCUS READJUST FOCUS CONTROL NG CHECK FOCUS CONTROL FOCUS LEAD WIRE CRT SOCKET CRT CHECK IC101 AND IC601 RELATIVE CIRCUIT ViewSonic Corporation Confidential Do Not Copy E96f SB 1 22 ...

Page 26: ...K NG YES NO CHECK BRIDGE RECTIFIED CHECK START C K T CHECK IC101 CHECK D925 CHECK Q911 Q911 FAILURE CHECK IC901 CHECK AC LINE VOLT 120V OR 220V CHECK F901 SW901 CHECK LINE RECTIFIED SMOOTHED VOLT CHECK SENSE RESISTENCE IC901 FAILURE CHECK T901 O P MAKE SURE THAT THE VARIABLE OK OUTPUT IS NOT SHORTED R936 PIN39 40 41 B DRIVER 6 5V CIRCUIT OUTPUT IC101 PIN30 ABOUT5V CHECK 56V 12V CHECK THE 56V OUTPU...

Page 27: ... 61C 52 27 4W PR901 1 29 FUSE 4A 250V LF 618 004 E 00002695 84A 7H400 SL F901 1 30 CAPACITOR 150UF 450V E 00001201 67C 3015115X C907 1 31 NTCR 10OHM 20 5A THIN E R 0405 0377 61C 58 9T NR901 1 32 DIODE U4KB80R E 00004072 93C 50460 16 BD901 1 33 DIODE SBYV26C E 00004541 93C106050652T D919 1 34 DEGAUSSING COIL E 00004542 750A1697 77BAG NA 1 35 CHOKE COIL E 00004062 73C 253513 H L906 1 36 INDUCTOR 150...

Page 28: ... WAL E 00002725 61C 52 27 4W PR901 1 29 FUSE 4A 250V LF 618 004 E 00002695 84A 7H400 SL F901 1 30 CAPACITOR 150UF 450V E 00001201 67C 3015115X C907 1 31 NTCR 10OHM 20 5A THIN E R 0405 0377 61C 58 9T NR901 1 32 DIODE U4KB80R E 00004072 93C 50460 16 BD901 1 33 DIODE SBYV26C E 00004541 93C106050652T D919 1 34 DEGAUSSING COIL E 00004542 750A1697 77BAG NA 1 35 CHOKE COIL E 00004062 73C 253513 H L906 1 ...

Page 29: ...131 1 30 N A 67C 309220 4T 22UF 20 25V C145 1 31 N A 64C178J103 1T CL21X 0 01UF 100V 5 C401 1 32 N A 65C 450104 7T 0 1UF 80 20 50V Y5V C402 1 33 N A 65C 2K470 1T6921 47PF 2KV C410 1 34 N A 65C 450104 7T 0 1UF 80 20 50V Y5V C411 1 35 N A 64C178J152 1T 1500PF 100V 5 C412 1 36 N A 64C178J224 1T C121X 0 22UF 100V 5 C414 1 37 N A 65C 450104 7T 0 1UF 80 20 50V Y5V C416 1 38 N A 64C178J474 0T CL21X 0 47U...

Page 30: ...828 1 100 N A 65C251K104 2T 0 1UF 250V C829 1 101 N A 64C176J104 1T 0 1UF 5 100V C830 1 102 N A 65C251K104 2T 0 1UF 250V C831 1 103 N A 65C251K104 2T 0 1UF 250V C832 1 104 N A 65C 444102 5T 1000 PF 10 50V Y5P C833 1 105 N A 65C 2K102 5T6921 1000PF 2KV C835 1 106 E 00004474 65C 2K101 5T6921 100PF 2KV C836 1 107 N A 65C 44447113T 470PF 10 Z5P 50V C837 1 108 N A 65C 450104 7T 0 1UF 80 20 50V Y5V C839...

Page 31: ...1 169 N A 93C 220505 DMV1500M AOC D408 1 170 N A 93C 64 1152T IN4148 D409 1 171 N A 93C 64 1152T IN4148 D450 1 172 N A 93C 6450752T BAV21 D460 1 173 E 00002716 93C 6026T52T RECTIFIER DIODE FR107 D463 1 174 E 00001186 93C 6026W52T FR107 D463 0 175 E 00002716 93C 6026T52T RECTIFIER DIODE FR107 D470 1 176 E 00001186 93C 6026W52T FR107 D470 0 177 E 00002716 93C 6026T52T RECTIFIER DIODE FR107 D473 1 17...

Page 32: ... 241 M FT 0827 0085 53A 40 8 FILTER FB801 1 242 M FT 0827 0085 53A 40 8 FILTER FB802 1 243 M FT 0827 0085 53A 40 8 FILTER FB803 1 244 N A 61C175L56452T CFR 560K OHM 5 1 2W FB804 1 245 N A 71C 55 9 T C CORE RF BEAD RH 3 5X6X0 FB805 1 246 N A 71C 55 9 T C CORE RF BEAD RH 3 5X6X0 FB806 1 247 N A 71C 55 9 T C CORE RF BEAD RH 3 5X6X0 FB807 1 248 N A 71C 55 19 T FERRITE BEAD 9X3 5X0 8 FB901 1 249 N A 71...

Page 33: ...61 0 312 E 00003625 95C 90 23 JUMPER J062 0 313 E 00003625 95C 90 23 JUMPER J063 0 314 E 00003625 95C 90 23 JUMPER J064 0 315 E 00003625 95C 90 23 JUMPER J065 0 316 E 00003625 95C 90 23 JUMPER J066 0 317 E 00003625 95C 90 23 JUMPER J067 0 318 E 00003625 95C 90 23 JUMPER J068 0 319 E 00003625 95C 90 23 JUMPER J069 0 320 E 00003625 95C 90 23 JUMPER J070 0 321 E 00003625 95C 90 23 JUMPER J071 0 322 E...

Page 34: ...ER J819 0 385 E 00004074 73C 147542 H COIL L401 1 386 E 00002875 73C 253 69 T 150UH 10 FOR TDK L405 1 387 E 00003625 95C 90 23 JUMPER L805 0 388 N A 73C 5447810T 0 47UH 10 peaking co L807 1 389 N A 73C 5447810T 0 47UH 10 peaking co L808 1 390 N A 73C 5447810T 0 47UH 10 peaking co L809 1 391 N A 73A 174 7 HG LINE FILTER L901 1 392 N A 73A 174 7 SG LINE FILTER L901 0 393 N A 73C 25818110H 180UH L902...

Page 35: ... 456 E 00004071 57C 724502 STP9NK70Z Q901 1 457 N A 57C 446 1 T 2SC1213ACTZ E Q902 1 458 N A 57C 419 P T TRAN 2SC945P NEC TAPING Q903 0 459 N A 57C 419 SG T KSC945C G TA FAIRCHILD Q903 0 460 E 00004376 57C 419503 T 2SC945P Q903 1 461 N A 57C 420 P T TRAN 2SA733P NEC TAPING Q905 0 462 N A 57C 420 SG T KSA733C G TA FAIRCHIL Q905 0 463 N A 57C 420502 T 2SA733P Q905 1 464 N A 57C 446 1 T 2SC1213ACTZ E...

Page 36: ...A 61C 60247152T CFR 470 OHM 5 1 6W R151 1 526 N A 61C 60210252T CFR 1K OHM 5 1 6W R152 1 527 N A 61C 60227252T CFR 2 7K OHM 5 1 6W R153 1 528 N A 61C 60247152T CFR 470 OHM 5 1 6W R154 1 529 N A 61C 17224252T CFR 2 4KOHM 5 1 4W R155 1 530 N A 61C 60236252T CFR 3 6K OHM 5 1 6W R156 1 531 N A 61C 60236252T CFR 3 6K OHM 5 1 6W R157 1 532 N A 61C 60247252T CFR 4 7K OHM 5 1 6W R158 1 533 N A 61C 6021015...

Page 37: ...596 N A 61C 60247152T CFR 470 OHM 5 1 6W R603 1 597 N A 61C 21020252T MFR 2KOHM 1 1 6W R604 1 598 N A 61C 60210052T CFR 10 OHM 5 1 6W R605 1 599 N A 61C 208121 64 120 OHM 1W R606 1 600 N A 61C152M109 64 MOFR 1 OHM 5 2W R607 1 601 N A 61C152M688 64 MOFR 0 68 OHM 5 2W R608 1 602 N A 61C175L27152T CFR 270 OHM 5 1 2W R609 1 603 N A 61C175L10952T CFR 1 OHM 5 1 2W R610 1 604 N A 61C 17212052T CFR 12 OHM...

Page 38: ...52T CFR 6 2K OHM 5 1 6W R905 1 667 N A 61C 17247052T CFR 47 OHM 5 1 4W R906 1 668 N A 61C 208681 64 MOFR 680 OHM 5 1W R907 1 669 N A 61C175L15052T CFR 15 OHM 5 1 2W R908 1 670 N A 61C 17210152T CFR 100OHM 5 1 4W R909 1 671 N A 61C 60291352T CFR 91K OHM 5 1 6W R910 1 672 E 00003625 95C 90 23 JUMPER R911 0 673 N A 61C 60210252T CFR 1K OHM 5 1 6W R912 1 674 N A 61C203S12452T 120KOHM 1 2W R913 1 675 N...

Page 39: ... 00002759 6C 31 4 BRASS RV7 1 741 PL 00002759 6C 31 4 BRASS RV8 1 742 PL 00002759 6C 31 4 BRASS RV9 1 743 N A 77C 260 5 4 RELAY RY401 1 744 N A 77C 260 5 4 RELAY RY901 1 745 N A 77C 260 5 2W RELAY OSA SS 212DM5 RY901 0 746 N A 62A 10 16 W SPARK GAP SG408 1 747 N A 77C411A 2 S MINI PUSH SWITCH SW901 1 748 N A S79C167118VC DRIVER TRANS ASS Y T401 0 749 N A 79C 167118 HC DRIVE TRANSFORMER T401 0 750 ...

Page 40: ...2A CARTON 1 809 P 00004077 44C6932 1 EPS CUSHION 1 810 P 00004078 44C6932 2 EPS CUSHION 1 811 P 00004101 45C 76 20 RN PE BAG FOR MONITOR 1 812 P 00002871 45C 76 28 V3 PE BAG FOR MANUAL 1 813 N A 45C 88539 OUT PE BAG 1 814 N A 45C 88601 C EPE COVER 1 815 N A 50C 500500 CABLE TIE 2 816 N A 50C 500502 CABLE TIE 5 817 N A 50C 502 2 PLASTIC TIE 2 818 N A 50C 502 5 CABLE TIE 1 819 N A 51C 6 4 SILICON 9 ...

Page 41: ... N A 2C6003 1 SCREW NUT 2 868 N A 90C6026506 HEAT SINK 1 869 N A 90C6074 4 HEAT SINK 1 870 N A M1C1730 10128 SCREW M3x10 2 871 E 00003860 750C55372AV SDI 19 DFTM CRT 1 872 E 00003860 750C55372AV SDI 19 DFTM CRT 1 873 HW 00004075 15C5659500 2 Rear Bracket 1 874 N A B1C1140 6128 SCREW 1 875 N A 32C3028 8 MICA 1 876 N A 90C 351511 A HEAT SINK 1 877 N A M1C1730 10128 SCREW M3x10 1 878 N A M1C1730 1012...

Page 42: ...Model E96f SB 1 Title Date Rev ViewSonic Corporation Confidential Do Not Copy E96f SB 1 39 8 Exploded Diagram And Spare Parts List ...

Page 43: ...PAD 1PCS 5 N A 33C6337 1 LENS 1PCS 6 N A 33C6336 FK F POWERKNOB 1PCS 7 N A 1C503 5T 47 SCREW 4PCS 8 N A 85C6027 604 SHIELD 1PCS 9 C 00004524 34C6286FK F REARCOVER 1PCS 10 HW 00002749 Q1C 340 164 7 SCREW 4PCS 11 N A 34C6293 QD L SWIVEL 1PCS 12 C 00004373 34C741 QD L BASE 1PCS 13 E 00003860 750C5537 2AV CRT 1PCS 14 N A 715C1576 2 PCB 1PCS EXPLODED PARTS LIST E96f SB 1G P ViewSonic Corporation Confid...

Page 44: ...9 Block Diagram ViewSonic Corporation Confidential Do Not Copy E96f SB 1 41 ...

Page 45: ...29 SwiChoice ISCL ISDA Mute G1 Hs Vs DSCL ROTA Pro H LIN Unlock CLAMP VsOUT CS1 CS2 NC OFF VSSE VDDD V5V VSSD BDRV HBGND HDRV HFB Iref Vref AGND Bsens Bin BOP Vssa VDDA MODE XTAL1 XTAL2 NC REM EEP W R standby DSDA NC XRAY RST Vfocus Deguss ABLadj KEY2 KEY1 EWdrv VOUT2 VUOT1 EHT DouColor Uvolt SinColor IC101 SAA4849 ViewSonic Corporation Confidential Do Not Copy E96f SB 1 42 ...

Page 46: ...SAA4849 ViewSonic Corporation Confidential Do Not Copy E96f SB 1 43 ...

Page 47: ...6 1 2 3 7 4 VCC ISDA ISCL A0 A1 A2 WP A4 IC601 TDA4863AJ 1 3 2 6 7 4 5 VCC N VF I P I P GND O P 4 7 1 2 6 3 5 AMPLITIER POWER PROTECTION THERMAL GENERATOR FLYBACK ViewSonic Corporation Confidential Do Not Copy E96f SB 1 44 ...

Page 48: ...IC801 LM1276EE ViewSonic Corporation Confidential Do Not Copy E96f SB 1 45 ...

Page 49: ...IC801 LM1246DKA ViewSonic Corporation Confidential Do Not Copy E96f SB 1 46 ...

Page 50: ...ViewSonic Corporation Confidential Do Not Copy E96f SB 1 47 ...

Page 51: ...LATOR LOGIC LOGIC OVER VOLTAGE PROTECTION OVERPOWER PROTECTION short winding soft start S2 OVER TEMPERATURE PROTECTION S Q R UVLO Q MAXIMUM ON TIME PROTECTION POWER ON RESET 1 VALLEY T E A 1507 100 mV clamp DRIVER START UP CURRENT SOURCE 0 75 V 0 5 V 5 I sense 6 DRIVER MGU230 4 DEM 8 DRAIN 7 HVS n c OCP LEB blank I ss 2 5 V burst detect ViewSonic Corporation Confidential Do Not Copy E96f SB 1 48 ...

Page 52: ...M2476 15 19 17 18 16 2 8 14 3 6 4 1 5 13 10 7 9 12 11 OUTD1 OUTD2 OUTD3 N C N C VBB INC3 VCC IND3 INC1 IND1 IND2 GND OUTC3 GNDS INC2 OUTC1 N C OUTC2 ViewSonic Corporation Confidential Do Not Copy E96f SB 1 49 ...

Page 53: ... NC PC5V CHECK EEP W R standby DSDA CS3 XRAY RST Vfocus Deguss HD KEY2 KEY1 EWdrv VOUT2 VUOT1 EHT DouColor Uvolt SinColor KEY1 5 00V 12V 0 057V SAA4849PS 1N4148 D104 100UF 16V C104 SW101 1000 C106 Orange LED4 100 R117 10K R126 5V ZD107 2 2K R131 3 30V 75K R137 Jumper R121 10K R144 12V ROTA 0 68V 4K7 R107 J076 NC 2 67V 0 1UF C103 48MHz X101 KEY1 3 HZ6C2 ZD105 3 283V SW105 0 793V 51K 1 4W R138 Orang...

Page 54: ...909 C906 0 022U R951 1K 4A 250V F901 CPU PIN 53 OFF D923 SB240 68K 3K3 D991 IC902 78L05 O I G O I G 68K CS 12V R989 10 1 4W R980 220 1 4W 6 0 C937 47UF 16V 47n 50V C932 1M 1 2W R901 R909 100 1 4W C939 1000UF 16V 42 4V 1 14 0 47 1 4W R924 R922 JUMPER R970 220K 1 2W 68K 15R R938 0 1UF C911 Q907 TBC548C A733 Q920 240K 1 2W R935 2 5V 1M 1 2W R921 68K 9R R918 3 3K 1 2W 4V 0 R916 240 1 2W 1 12 3V 12V 90...

Page 55: ...5V 0 14V B995D 1VSC 64 4V P802 P801 GND 80V G1 ABL HT CLP VF HF X 12V ISDA GND ISCL 5V 1 2 3 4 5 6 7 8 9 10 11 12 13 14 R834 75 IC802 LM2476 15 19 17 18 16 2 8 14 3 6 4 1 5 13 10 7 9 12 11 OUTD1 OUTD2 OUTD3 N C N C VBB INC3 VCC IND3 INC1 IND1 IND2 GND OUTC3 GNDS INC2 OUTC1 N C OUTC2 100PF 2KV C836 11 100 R802 1 24V 1 96V BEAD FB807 100PF 50V C812 P802 5V GND R I GND B I G I GND NC HS VS DSCL DSDA ...

Page 56: ...40 470 R601 2SC945P EWOUT 15V 1800PF 1000V C419 57C600 14 12 07V 12V J045 2 2K R442 0 01UF 250V C710 27K R717 47K 1 4W R412 2SC1213 Q743 56A584 1A 90C6055 700 47P 1KV C450 1 2K R410 1N4004 D601 4K7 1 2W R459 47K R722 JUMPER R447 4 7U 160V C436 220K 1 4W R479 TP405 4 60V BAV20 D701 CR 180K 1 2W R725 0 616V NC NC R468 2M 1 4W R463 0 1UF 100V C610 100K 1 4W R449 HDRV 57C705 7 120 1W R606 D409 IN4148 ...

Page 57: ...11 PCB Layout 11 1 MAIN PCB LAYOUT ViewSonic Corporation Confidential Do Not Copy E96f SB 1 54 ...

Page 58: ...11 2 CRT BOARD LAYOUT ViewSonic Corporation Confidential Do Not Copy E96f SB 1 55 ...

Page 59: ...rcuit Description 5 Adjustment Procedure 6 Troubleshooting Flow Chart 7 Recommended Spare Parts List 8 Exploded Diagram and Exploded Parts List 9 Block Diagrams 10 Schematic Diagrams 11 PCB Layout Diagrams B Are you satisfied with this Service Manual Item Excellent Good Fair Bad 1 Service Manual Content 2 Service Manual Layout 3 The form and listing C Do you have any other opinions or suggestions ...