ViewSonic VS11262 User Manual Download

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ViewSonic Corporation P76f+-2

Confidential-Do Not Copy

(P76f+-2_SM_884 Rev. 1a – Apr. 2006)

ViewSonic

“

381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

Service Manual

ViewSonic P76f+-2

Model No. VS11262

17” Digital Controlled Color Monitor

Summary of Contents for VS11262

Page 1: ...n P76f 2 1 Confidential Do Not Copy P76f 2_SM_884 Rev 1a Apr 2006 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 Service Manual ViewSonic P76f 2 Model No VS11262 17 Digital Controlled Color Monitor ...

Page 2: ...xpressed or implied with respect to the contents hereof and 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 trad...

Page 3: ... 1 2 Specification 3 3 Front Panel Function Control Description 6 4 Circuit Description 10 5 Adjustment Procedure 13 6 Troubleshooting Flow Chart 17 7 Block Diagram 24 8 Schematic Diagrams 30 9 PCB Layout Diagrams 34 10 Exploded Diagram and Exploded Parts List 36 11 PPL 38 12 Recommended Spare Parts List 39 ...

Page 4: ...nd AC power line before servicing the chassis 3 2 In servicing 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...

Page 5: ...Use only Panasonic replacement picture tubes 7 X RADIATION 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 periodica...

Page 6: ...ry Recall Languages 5 Input Video Signal Timing 1 2 3 4 5 6 Resolution 640 480 VGA 640 480 640 400 VGA 800 600 800 600 1024 768 V Hz 59 943 70 008 70 000 75 000 85 061 75 029 Timing 7 8 MAC 9 MAC 10 11 12 VGA Resolution 1024 768 1024 768 1152 870 1280 1024 1280 1024 1600 1200 VGA V Hz 84 997 75 000 75 00 75 00 85 00 75 00 6 Display Size Horizontal Display Size Primary Preset 310 mm 3 mm Horizontal...

Page 7: ...m Depth 424 mm 540 mm Footprint Width 258 mm Footprint Depth 258 mm Monitor Weight Net 15 0kg 33 1lb 16 8 kg 37 0lb 15 External Connection 15 Pin D sub Connector AC Power Cord 16 Power Consumption Modes ON Mode 75W typical Green LED ACTIVE OFF 2W Orange LED Power off 1W 17 Regulatiory and Safety North America Regulatory Filing Regulatory filing should be made under the VS11262 determined by Compli...

Page 8: ...e and lock both screws 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 From PC 2 GREEN 10 Sync GND 3 BLUE 11 NC 4 GND 12 SDA 5 GND 13 HORIZ SYNC 6 GND R 14 VERT SYNC VCLK 7 GND G 15 SCL DDC CLOCK 8 GND B 3 Apply power to the display by turning the power switch to the ON position and ...

Page 9: ...3 Front Panel Function Control Descriptions Adjusting the Screen 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 ...

Page 10: ...play briefly indicating that the OSD image settings are now 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 p...

Page 11: ...ght of the screen image Horizontal Size adjusts width of the 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 ima...

Page 12: ... in most office settings with fluorescent lighting 6500K Adds 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 wh...

Page 13: ...ith full auto sync Capability a flexible SMPS block and an extensive set of geometry control facilities Further the IC generates the drive waveforms for DC coupled vertical boosters to the E STV9383 H V sync signals processor The functions of the sync processor include polarity detection H SYNC V SYNC signals counting and Programmable SYNC signals output free running signal generator Pin52 Pin53 a...

Page 14: ...48MHz Other quartz crystal frequencies than 48 MHz cannot be used External capacitors on XTAL1 and XTAL2 are not allowed B Control Function Block The B control block of the SAA4848P 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 bl...

Page 15: ...6 Q911 B Transistor 2SJ584LS 17 Q417 CS mosfet CEPF630 Q417 CS mosfet IRF630B 18 Q418 CS mosfet CEPF630 Q418 CS mosfet IRF630B 19 Q416 CS mosfet IRF630B Q416 CS mosfet FQP10N20C 20 Q420 CS mosfet CEPF630 Q420 CS mosfet IRF630B 21 Q406 Size control Mosfet IRF630M 22 D919 Rectifier DIODE BYV26C D919 Rectifier DIODE SBYV26C 23 D918 Rectifier DIODE 31DF4 FC 24 D923 Rectifier DIODE SB240 25 D922 Rectif...

Page 16: ...CB MAIN SW102 DOWN PCB MAIN SW103 5 FUNCTION ADJ SELECT PCB MAIN SW104 5 3 Adjustment Method 1 B 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 TP902 and ground and then adjusts VR902 to make the B is 114 VDC 2 Factory preset Timings Adjustment A Press Key to show OSD window press UP or Down Key to switch the ...

Page 17: ...SS G BIAS PINCUSHION R BIAS TRAPEZOID 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 HR V HV Variation rate adjust TM BURN IN TIME ...

Page 18: ...the size center function then press the 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 50 R G B bias DAC value for 60 C Raster Pattern Brightness contrast ratio MAX fix to G BIAS fix to 60 adjust R or B bias make x 265 10 y 290 10 adjust G2 make Y 3 5 cd m2 and then adjust brightness make ...

Page 19: ...r purity Make minor adjustments if needed RELATIVE PLACEMENT OF TYPICAL COMPONENTS Purity Magnets Deflection Yoke 4 pole Convergence Magnets 6 pole Convergence Magnets 6 Convergence adjustment A Produce a magenta crosshatch on the display B Adjust the focus for the best overall focus on the display Also adjust the brightness to the desired condition C Vertical red and blue lines are converged by v...

Page 20: ...E CHECK THE VOLTAGE OF CRT HEATER ABOUT 6 3V CHECK VOLTAGE OF THE CRT CHECK BRIGHTNESS CIRCUIT Q705 RELATIVE CIRCUIT OK CHECK POWER SAVING CIRCUIT ABNORMAL H SYNC V SYNC SIGNAL CHECK SCREEN VOLTAGE ABOUT LESS THAN 300V CHECK FBT CHECK MAIN PCB POWER SUPPLY CHECK IC101 PIN18 OUTPUT Q907 Q908 Q909 Q910 CHECK CRT S HEATER RELATIVE CIRCUIT Q907 Q908 OF CRT ABOUT 24 5 25 5KV 400V TO 600V REFER ITEM 6 2...

Page 21: ...F IC801 R G B APPROACH STANDARD CHECK SIGNAL CABLE OR INTERFACE CARD CONTRAST SET MAX PIN 10 18 ABOUT 5V CHECK 5V RELATIVE CIRCUIT CHECK THE IC801 PIN 23 RELATIVE CIRCUIT RELATIVE CIRCUIT CHECK IC801 PIN 23 CLAMP PULSE PIN 19 20 21 ABOUT 4Vpp CHECK IC801 PIN19 PIN20 PIN21 6 1 3 Abnormal DDC Plug Play OK NG CHECK IC101 PIN 5 VOLTAGE ABOUT 5V CHECK SIGNAL CABLE CHECK IC902 GOOD OR FAIL OR H802 PIN 2...

Page 22: ...OF CHECK THE VOLTAGE OF CRT CATHODE ABOUT 40Vpp CHECK THE VOLTAGE OF FBT SCREEN CHECK THE RELATIVE CIRCUIT CHECK THE 5V PIN ON MAIN PCB RELATIVE CIRCUIT OF P802 CONNECTOR ABOUT 400V TO 700V EXCEED 700V CHECK FBT CRT RELATIVE CHECK VIDEO IC801 VCC ABOUT 5V OF IC801 PIN 19 20 21 ABOUT 3Vpp CHECK THE IC802 OF IC801 PIN 10 PIN 18 Vcc CIRCUIT CIRCUIT OR REFER ITEM 6 1 VIDEO AMP ABOUT 80V CHECK THE 80V ...

Page 23: ... 4 Hor Osc Def Hv Circuit Fault 6 4 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 ABOUT 3Vpp OF Q403 ABOUT 1200Vpp AT FH 31KHz D408 C418 C419 H DY B CHECK IC101 PIN20 WAVE FORM CHECK IC101 PIN20 CHECK IC101 PIN 16 ABOUT 5 VDC CHECK IC101 PIN 5 RELATIVE...

Page 24: ...1 Abnormal Horizontal Width Of Video NG OK CHECK THE RELATIVE CIRCUIT CHECK THE RELATIVE CIRCUIT OF SMPS READJUST H WIDTH FUNCTION OFQ406 CHECK THE HV OF CHECK FBT B VOLTAGE CRT ABOUT 25KV ABOUT 62V AT FH 31KHz NG OK 6 5 2 Abnormal Horizontal Linearity AND IC101 PIN9 10 11 CHECK L401 Q426 Q420 Q427 ...

Page 25: ...UIT 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 6 6 2 Vertical Center NG READJUST V CENTER RELATIVE CKT CHECK IC101 AND IC601 6 7 Side Pin Cushion Distortion NG READJUST CHECK IC101 Q406 RELATIVE CKT 6 8 Poor Focus READJUST FOCUS CONTROL NG CHECK FOCUS CONTROL UNIT FOCUS LEAD WIR...

Page 26: ...V BEAD SET ABNORMAL VARIABLE OUTPUT NG OK NG OK OK NG NG OK OK OK NG OK 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 R939 R940 D912 ZD903 PIN39 40...

Page 27: ...ION CONTROL Q705 BLANKINGCIRCUIT IC802 LM2476 O P Q406 PINCUSHION H SIZE CONTROL IC801 LM1246DKA PRE AMP Q403 T402 FBT HOR O P Q402 T401 HOR DRIVER IC601 STV9383 VERT O P EHT G1 G2 FOCUS X RA Y PROTECTION 24 5KV H HV CRT R SIGNAL CABLE G B R G B V IC101 SAA4849PS V1016 CRYSTAL 48M ...

Page 28: ... 51 12 55 56 22 23 24 25 26 27 28 35 34 33 32 31 30 29 SwiChoice ISCL ISDA Mute G1 Hs Vs DSCL ROTA Pro H LIN Unlock CLAMP VsOUT CS1 CS2 CS3 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 ...

Page 29: ...VIEWSONIC CORPORATION Confidential Do Not Copy P76f 2G 26 SAA4849 ...

Page 30: ...Not Copy P76f 2G 27 IC102 24LC08 BN6 8 5 6 1 2 3 7 4 VCC ISDA ISCL A0 A1 A2 WP 4 E STV9383 IC601 1 2 3 4 17 18 19 20 5 6 7 8 9 10 11 12 13 14 15 16 VCC VCC VCC OUT VCCP VCC VCC VCC Cfly CFfly BOOT Vreg Feedcap Freq SGND IN IN EAOUT VCC VCCP ...

Page 31: ...ial Do Not Copy P76f 2G 28 IC801 LM1246DKA 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 VBLK CAP_A VDD_1 GND_A R_IN G_IN B_IN GND PLL VCO 5V_PLL SDA SCL CAP_D DA3 DA2 DA1 GND_2 VDD_2 B_OUT G_OUT R_OUT ABL CLAMP HBLK ...

Page 32: ... Do Not Copy P76f 2G 29 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 STR G5643D IC901 56C379 504 1 2 3 4 5 D S GND VCC OCP FB ...

Page 33: ...C1125 575 X IC101 1 2 3 4 52 53 54 5 50 6 7 8 49 9 10 11 13 14 15 16 17 18 19 20 21 36 37 38 39 40 41 42 43 44 45 46 47 48 51 12 55 56 22 23 24 25 26 27 28 35 34 33 32 31 30 29 SwiChoice ISCL ISDA CS0 Hs Vs DSCL ROTA Pro H LIN Unlock CLAMP VsOUT CS1 CS2 NC CR 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 Vfocu...

Page 34: ...953 5K6 1 2W 56C133 5 ST 68K TZX842A ZD901 85Hz 73C253 513 H L906 47n 50V C932 C906 0 022U 100V 6K2 R905 A K G Q935 BT169B 68K 40KHZ 58KHZ 1M 1 2W R901 178 2V R977 200K 1 2W 11 9V BAV21 D915 14 R970 220K 1 2W L905 73C 25818110H 100P 50V C922 8 SW901 0 47 1 4W R923 58KHZ 4 13 Q403 B 13 7V 115 2V Q911 57C751 4 G S D R922 JUMPER IC901 PIN1 1 9 OHM 220V C937 470UF 16V Deg Coil 10 5 41V 1 4V C930 47UF ...

Page 35: ... 500 T L601 79C167 118 LC T401 1 6 3 4 5 57C419 501 T 57C419503 T 15 9V 5 1V ZD701 NC R445 93C1060 6P 52T HD 2K2 1 4W R473 P4 1nF C605 470 1 2W R480 Q423 1200PF 1KV C426 20K R423 10K R604 77C260 5 4 11 9V G1 47K R485 2200P 500V C430 2 2nF C618 JUMPER R738 1 1W R401 57C5210 1 T 26 7V CS0 FR107 D473 0 3V 47PF 2KV C489 HF Page Modify Date B795D 1VSCP TOP VICTORY ELECTRONICS FUJIAN CO LTD MODEL P N Da...

Page 36: ...T J816 53A40 8 FB803 1 29 470UF 16 C826 4 9 JUMP L804 150 1 4W R815 40 3 100P 2KV C835 GND 47UF C819 470 R809 330K 1 4W R837 1N4148 D805 0 1UF 250 C831 FB805 BEAD 0 01UF 2KV C806 0 5 1 21 470 R830 BAV21 D810 560P 500V C801 FB804 560K 1 2W 0 1UF 250V C813 750C5X31 1AV 39 3 0 1UF C816 5 6K R811 0 1UF 100V C838 0 01UF 2KV C852 71 1 0 1UF C804 2 9 1N4148 D814 10P C844 0 68uH R843 39 9 56A366 509 FOCUS...

Page 37: ...VIEWSONIC CORPORATION Confidential Do Not Copy P76f 2G 34 9 PCB Layout Diagrams 9 1 Main PCB Layout ...

Page 38: ...VIEWSONIC CORPORATION Confidential Do Not Copy P76f 2G 35 9 2 CRT Board Layout ...

Page 39: ...VIEWSONIC CORPORATION Confidential Do Not Copy P76f 2G 36 10 Exploded Diagram and Exploded Parts List ...

Page 40: ...CS 6 750A1697504JAG Degaussing coil 1 PCS 7 715C1451 3 CRT Socket board video board 1 PCS 8 085C6027604 CRT Board shield 1 PCS 9 085C6028500 Shield 1 PCS 10 0Q1C 340 16128 Screw M4 16 4 PCS 11 034C 739 F0 1T Back cover 1 PCS 12 0B1C1035 10128 Screw M3 5 10 1 PCS 13 005C600604075S RUBBER WASHER 4 PCS 14 750C5X311AV CRT 1 PCS 15 033C4444 1 POWER LENS 1 PCS 16 715C1576 K 1 PCB 1 PCS 17 034C 824 F0 B ...

Page 41: ...VIEWSONIC CORPORATION Confidential Do Not Copy P76f 2G 38 11 PPL ...

Page 42: ...VIEWSONIC CORPORATION Confidential Do Not Copy P76f 2G 39 12 Recommended Spare Parts List RECOMMENDED SPARE PARTS LIST P76f 2G ViewSonic Model Number VS11262 Rev 1a ...

Page 43: ...VIEWSONIC CORPORATION Confidential Do Not Copy P76f 2G 40 P76f 2G BOM ...

Page 44: ... 4 Circuit Description 5 Adjusting Procedure 6 Trouble Shooting Flow Chart 7 Block Diagram 8 Schematic Diagrams 9 PCB Layout Diagrams 10 Exploded Diagram and Exploded Parts List 11 Recommended Spare Parts List B Are you satisfied with the P76f 2 service manual me tI tnel lecxE dooG riaF daB 1 Service Manual Content 2 Service Manual Layout 3 The form and listing C Do you have any other opinion or s...

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