ViewSonic E70F - 17" CRT Display User Manual Download

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Model No.

VCDTS23125

”

Digital Controlled Color Monitor

Service Manual

ViewSonic

SB-

ViewSonic

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

(E70f+SB-3_SM_832

Rev. 1a –

May 2004

)

Summary of Contents for E70F - 17" CRT Display

Page 1: ...Model No VCDTS23125 17 Digital Controlled Color Monitor Service Manual ViewSonic E70f SB 3 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 E70f SB 3_SM_832 Rev 1a May 2004...

Page 2: ...eof 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 ti...

Page 3: ...uble Shooting Flow Chart 9 Block Diagram 10 Schematic Diagrams 7 Recommended Spare Parts List 1 Precautions and Safety Notices 5 Adjusting Procedure 8 Exploded Diagram And Spare Parts List 11 PCB Layo...

Page 4: ...igh 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...

Page 5: ...ATION 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 precauti...

Page 6: ...NDED PERIODS OF OPERATION WITH LINE VOLTAGE REDUCED BELOW THE SPECIFIED MINIMUM 9 AN ISOLATION TRANSFORMER SHOULD BE USED WHEN PERFORMING ALIGNMENT AND TESTS PORTIONS OF THE POWER SUPPLY BOARD ARE HOT...

Page 7: ...TION INPUT MODE 1 12 ADJUST V POSITION H POSITION SUCH THAT THE PICTURE IS CENTERED WITH THE SCREEN I A B I 2mm I C D I 2mm 3 4 GEOMETRY ADJUSTMENT 3 4 1 INPUT MODE 1 12 3 4 2 PINCUSHION AND BARREL DI...

Page 8: ...PEC 1 5m m 1 5m m 1 5m m 1 5m m 230m m 310m m h 1m m 230m m 310m m 9300 O K x 0 283 0 003 y 0 297 0 003 Y 45 2FL For TEXT SPREADSHEET mode 9300O K x 0 283 0 003 y 0 297 0 003 Y 85 3FL For GRAPHIC GAME...

Page 9: ...ESETS 6 1 BRIGHTNESS SET 50 CONTRST SET 100 6 2 INPUT FULL WHITE PATTERN 6 3 WARM UP ALLOW 30 MINUTES WARM UP PRIOR TO TEST 7 POWER SUPPLY TEST 7 1 INPUT CHARACTERISTICS 7 1 1 INPUT VOLTAGE RANGE 90VA...

Page 10: ...STABILITY H SIZE 2mm V SIZE 2mm 8 1 5 THERMAL STABILITY SIZE VARIATION H SIZE 2mm V SIZE 2mm NOTE TEMP 0o C 40o 8 2 GEOMETRY 8 2 1 APPLY SIGNAL D AT EACH MODE 8 2 2 PINCUSION AND BARREL DISTROTION 8...

Page 11: ...I C D I 4mm H Linearity Hmax Hmin 100 Hmax Hmin V Linearity Vmax Vmin 100 Vmax Vmin 4 4 Primary Primary d5 Others C D B A PICTURE BAZEL Prima Other 9 HORIZONTAL SWEEP 9 1 PULL IN RANGE 9 1 1 APPLY SIG...

Page 12: ...1 APPLY SIGNAL A FULL WHITE FIELD AT 69K MODE 11 4 2 SET BRIGHTNESS 50 CONTRAST 100 PRESET SIZE 11 4 3 POWER CONSUMPTION MUST BE LESS THAN 75WATTS 12 CRT PARAMETERS 12 1 PURITY 12 1 1 INPUT FULL WHITE...

Page 13: ...NESS 50 CONTRAST 100 13 1 3 WHEN THE ZD405 PARALLEL WITH 27K RESISTOR THE MOITOR MUST BE SHUTDOWN AND NO SPOT 13 1 4 TURN POWER OFF AFTER TURN ON AGAIN MONITOR MUST BE OPERATED NORMAL NOTE THIS TEST M...

Page 14: ...URE VIDEO RISE FALL TIMES AT EACH CATHODE WITH A LOW CAPACITANCE 100X PROBE AND 150MHZ MINIMUM BW OSCILLOSCOPE 14 7 3 ADJUST CONTRAST TO CATHODE OUTPUT 40V 14 7 4 RISE AND FALL TIMES MUST BE AS FOLLOW...

Page 15: ...And 30HZ V 48HZ OR V 160HZ THE OSD SHOW 17 7 2 AS NO H SYNC H 10KHZ 17 7 3 AS NO V SYNC V 10KHZ 17 7 4 AS NO H SYNC AND V SYNC H 10 AND V 10KHZ 17 7 5 AS DISCONNECTED SIGNAL CABLE OR PC IS OFF THE OSD...

Page 16: ...THAN 0 1Mr HR 19 4 6 THE NORMAL ADJUST SHOULD BE RECOVERED AFTER THIS TEST IS FINISHED 19 5 X RAY RADIATION TEST 19 5 1 TO SIMULATE S RAY PROTECTION CIRCUIT USE 18K 5 RESISTOR TO PARALLED WITH R476 1...

Page 17: ...26 1KV AT MAX BEAM 4 4 X RAY PROTECTION TEST 4 4 1 WHEN THE R455 PARALLEL WITH 27K RESISTOR THE MONITOR MUST BE SHUTDOWN AND NO SPOT 4 4 2 TURN POWER OFF AFTER TURN ON AGAIN MONITOR MUST BE OPERATED...

Page 18: ...RANGE NOMINAL LINE 15 15 FLUCTUATION TIEM 1 MINUTE INTERVAL 1 MINUTE TEST PERIOD 10 MINUTES NO SIGN OF FAULTS OR MALFUNCTIONS SHALL BE OBSERVED UNDER THE ABOVE TEST CONDITIONS 5 1 AC LINE NOISE TEST T...

Page 19: ...ASE X RAYS SHOULD NOT MEASURE MORE THAN 0 5 MR HR MILLIRONTGEN PER HOUR AT A DISTANCE OF TWO INCHES ANYWHERE AROUND THE MONITOR G APPENDIX APPEDNDIX A ALL SIGNALS MUST BE AVAILABLE WITH CHROMA 2135 22...

Page 20: ...07 1 907 3 175 3 810 2 222 3 232 3 911 PIXELS 48 48 96 120 80 160 224 D H ACTIVE us 25 422 25 422 21 164 20 317 12 778 16 162 14 528 PIXELS 640 640 640 640 640 800 832 E H FRONT PORCH us 0 636 0 636 2...

Page 21: ...2 176 176 248 208 D H ACTIVE us 14 222 13 003 12 8 11 852 10 836 PIXELS 800 1024 1024 1280 1024 E H FRONT PORCH us 0 569 0 23 0 4 0 444 0 508 PIXELS 32 16 32 48 48 VERTICAL FREQ HZ 85 75 029 74 927 60...

Page 22: ...42 20 317 20 317 22 222 20 16 22 806 PIXELS 720 640 640 800 800 800 1024 E H FRONT PORCH us 0 931 0 762 1 016 0 667 1 1 12 0 178 PIXELS 32 24 32 24 40 56 8 VERTICAL FREQ HZ 88 000 72 809 85 080 56 250...

Page 23: ...us 13 653 15 754 11 852 10 667 20 317 20 282 PIXELS 1024 1024 1280 1152 640 720 E H FRONT PORCH us 0 32 0 369 0 889 0 593 1 016 1 014 PIXELS 24 24 96 64 32 36 VERTICAL FREQ HZ 70 069 60 004 60 000 75...

Page 24: ...raBrite 3x and UltraBrite 5x modes NORMAL TEXT SPREADSHEET displays a standard CRT brightness of 120 ULTRABRITE 3x GRAPHICS GAME displays up to 300 nits of brightness for applications and games ULTRAB...

Page 25: ...age up or down Vertical Size adjusts the height of the screen image Pincushion curves the vertical sides of the screen image Pin Balance curves the vertical edges of the screen image to the left or ri...

Page 26: ...tion Zoom expands and contracts the entire screen image H V Moire reduces interference patterns that appear as ripples waves or unwanted background color textures Interference patterns of this type ar...

Page 27: ...oes not affect changes made with the User Color control Viewmeter displays information regarding the current input signal coming from the graphics card of the computer See Setting the Timing Mode on p...

Page 28: ...C205 1 1 8 TP204 voltage output from T101 pin18 and is rectified by D206 C206 1 1 9 TP205 voltage output from TP203 is rectified by Q206 ZD201 and D208 1 1 10 TP207 voltage output from TP204 and is r...

Page 29: ...it horizontal and vertical sync through IC401 TDA9113 transmit Deflection controller IC401 TDA9113 1 1 The control O P V position H position V size H size Pincushion Pin Balance Trapezoid Parallelogra...

Page 30: ...to pass through ZD405 and C444 integration DC voltage and through D418 to IC401 pin25 when anode voltage abnormal increase FBT pin5 and IC401 pin25 voltage to be increased too As IC401 IC401 X RAY pro...

Page 31: ...EN PROPER ALIGNMENT IS COMPLETED 8 THE MONITOR IS NOT REQUIRED TO MEET SPECS DURING THE FOLLOWING BUT MUST TOLERATE WITHOUT DAMAGE TO THE CRT OR CIRCUITS ANY SEQUENCY OR COMBINATION OF POWER ON AND OF...

Page 32: ...o the left bezel edge is within 2mm of the distance from the midpoint of the right display edge to the right bezel edge 3 2 Picture size Input mode 1 12 signal adjust V size H size to achieve H size 3...

Page 33: ...RN ADJUST R DRIVER B DRIVER TO MEET FOLLOWING CHROMATICALLY SPEC 6500O K x 0 313 0 003 y 0 329 0 003 Y 45 2FL For TEXT SPREADSHEET mode 6500O K x 0 313 0 003 y 0 329 0 003 Y 85 3FL For GRAPHICS GAME m...

Page 34: ...P401 VR401 VR403 LED301 IC501 T401 WP603 SW101 VR101 IC101 C101 T101 X101 Adjust raster center Adjust TP201 77V IC303 Q409 Q202 Q401 D401 P301 Q101 WP602 IC602 IC604 IC601 IC603 P603 P602 P601 31 Vie...

Page 35: ...scription Connect sync cable first 1 Push 2 key and turn on monitor enter burn in mode then power off 2 Push 1 key and turn on monitor enter service mode as below 32 ViewSonic Corporation Confidential...

Page 36: ...33 ViewSonic Corporation Confidential Do Not Copy 70f SB 3 E...

Page 37: ...34 ViewSonic Corporation Confidential Do Not Copy 70f SB 3 E...

Page 38: ...35 ViewSonic Corporation Confidential Do Not Copy 70f SB 3 E...

Page 39: ...by pressing hot key on the front panel 2 Monitor in DPMS mode show below OSD 5 seconds 3 H sync or V sync is out of pull in range show below OSD 25 seconds H 30kHz 72kHz 1 5kHz V 50Hz 160Hz 1Hz 36 Vie...

Page 40: ...ate in which OSD can be opened press key 1 and about 10 seconds show OSD LOCK then OSD is locked and can t be opened 6 if moniotr is in the state in which OSD is locked press key 1 and about 10 second...

Page 41: ...es the power indictor LED light once and the go out Check horizontal circuit and power on again Is the power indicator LED light normally Check vertical circuit and power on again Is the LED normal Ch...

Page 42: ...of Q401 BASE normal Is the diode modulatic circuit normal Is the voltage on terminal TP201 75V Check power supply circuit Check H sync input Q402 is defective Horizontal drive is defective T402 Q401...

Page 43: ...p Turn the FBT screen clockwise FBT is defective R457 D420 are defective Is the voltage at the heater pin9 of CRT socket normal D206 Q208 are defective Heater voltage approx 6 3V Video circuit Q419 Q4...

Page 44: ...Check the dflection Yoke Is the waveform at pin6 of IC501 normal Check V sync of IC301 pin33 or signal cable Is the IC501 pin2 14V pin5 12V Is the waveform of IC401 pin13 pin23 normal Check power sup...

Page 45: ...ive The raster don t appear Check the signal cable or computer IC601 its buffer or its drive circuit clamping pulse blanking pulse is defective Video optput circuit defective IC602 pin1 pin2 pin3 CRT...

Page 46: ...0414 0106 720840115 RELAY 125VAC 12VDC 10A SPDT RL401 833H 1C C 2 WEEKS 24c Added 04 19 04 E RL 0414 0123 720840115 RELAY 125VAC 12VDC 10A SPDT RL401 833H 1C C 2 WEEKS 25 E T 0408 0519 2801427200 X FM...

Page 47: ...LG121 2 WEEKS 72 Added 04 19 04 E L 0407 1427 2921050700 CORE BEAD 2 5 3 1 0 W5 T R L202 W5 RH2 5 3 1 0 T R 2 WEEKS 73 Added 04 19 04 E L 0407 1602 2921050782 CORE BEAD 2 5 3 1 0 W5 T R L202 LB2 5 3...

Page 48: ...0242301 R C ABS 41 S7RB1AT 1 36 N A 4020363814 PLASTIC ABS 94V0 EP32 PA 765A PA 765A EP32 1 5 37 N A 3368306501 F B ASSY J770SBM00A S7PFB1AT 1 38 M MS 0808 4204 3240494100 RUBBER PAD 12 6 10 P532U HAR...

Page 49: ...SMALL R409 R638 RD1 4WSJ 2R2 T52 2 105 N A 0013243000 RES CF 1 4W 24K J R475 1 106 N A 0013243800 RES CF 1 4W 24K J SMALL R485 1 107 N A 0013270800 RES CF 1 4W 27 J SMALL R124 1 108 N A 0013271800 RE...

Page 50: ...5 5955 143271000 RES MOF 2W 270 J R408 1 186 E R 0405 6454 143271200 RES MOF 2W 270 J VDK R425 1 187 N A 143391200 RES MOF 2W 390 J VDK R117 MOR2WJ 390R F1 1 188 E R 0405 6840 143569200 RES MOF 2W 56...

Page 51: ...0 C420 MEF 225J0063DB4102 1 255 E C 0404 5327 1751121C26 CAP MP DP 250V 1U J KI10 C415 MPA104J2EB 1 256 E C 0404 2096 1751131C26 CAP MP DP 250V 22U J KI10 C413 C414 MPA224J2EB 2 257 N A 1751171F06 CAP...

Page 52: ...IC602 LM2460TA 1 250 E IC 0401 2731 2530211226 IC MASK OSD CONTROLLER DIP 20P IC604 NT68295 90049 1 251 E IC 0401 2852 2610185342 IC EEPROM 8K 8PIN IC302 M24C08BN6 1 252 E IC 0401 2762 2610561018 IC...

Page 53: ...1 N A 4158000200 CORE FERI SQ20 A07 U7000 UT 20 1 332 M MS 0808 5084 3132010200 BOBBIN BASE PBT 94V 0 2 333 E L 0407 1136 4158000100 CORE FERI SQ 20 u 7000 MA070 UT 20A 1 334 M MS 0808 5084 3132010200...

Page 54: ...3227000100 TUBE HS POLYOLEFIN 7 25 BLACK VERAFIT 7 2 5 BLK 0 015 406 M MS 0808 5739 3227001900 TUBE HS POLYOLEFIN 5 25 BLACK VERSAFIT 5 0 25 BLK 0 02 407 M MS 0808 7803 3240291900 INSULATOR SIRUB 12 2...

Page 55: ...8 Exploded Diagram And Spare Parts List 52 ViewSonic Corporation Confidential Do Not Copy 70f SB 3 E...

Page 56: ...CW 0824 0006 3109020201 SCREW T p4 1 4 16 PAN C S18C ZN YEL 2 16 C BS 0303 0541 3360318700 SWIVEL ABS EP32 S7SB1EL 1 17 C BS 0303 0397 3360425000 BASE ABS 41 S7SB1EL 1 18 M SW 0815 0176 3000091816 SWI...

Page 57: ...54 ViewSonic Corporation Confidential Do Not Copy 70f SB 3 E...

Page 58: ...55 ViewSonic Corporation Confidential Do Not Copy 70f SB 3 E...

Page 59: ...56 ViewSonic Corporation Confidential Do Not Copy 70f SB 3 E...

Page 60: ...57 ViewSonic Corporation Confidential Do Not Copy 70f SB 3 E...

Page 61: ...58 ViewSonic Corporation Confidential Do Not Copy 70f SB 3 E...

Page 62: ...59 ViewSonic Corporation Confidential Do Not Copy 70f SB 3 E...

Page 63: ...9 Block Diagram Model No E70f SB 3 60 ViewSonic Corporation Confidential Do Not Copy 70f SB 3 E...

Page 64: ...Model No E70f SB 3 10 Schematic Diagrams 61 ViewSonic Corporation Confidential Do Not Copy 70f SB 3 E...

Page 65: ...Model No E70f SB 3 62 ViewSonic Corporation Confidential Do Not Copy 70f SB 3 E...

Page 66: ...Model No E70f SB 3 63 ViewSonic Corporation Confidential Do Not Copy 70f SB 3 E...

Page 67: ...Model No E70f SB 3 64 ViewSonic Corporation Confidential Do Not Copy 70f SB 3 E...

Page 68: ...Model No E70f SB 3 65 ViewSonic Corporation Confidential Do Not Copy 70f SB 3 E...

Page 69: ...or Q101 1 Pin 2 VFB IC101 2 Pin 4 RT CT IC101 5 7 6 1 Pin 5 COMP IC101 2 Pin 6 SENSE IC101 1 FB 10 8 9 1 Pin 19 DAC ABL IC301 2 Pin 18 ROTATION IC301 1 Pin 29 BRIGHT IC301 66 ViewSonic Corporation Con...

Page 70: ...Pin 8 OSD O IC301 2 Pin 9 OSD I IC301 17 14 18 15 1 Pin 3 HLOCK IC401 2 Pin 4 FC IC401 1 Pin 41 H SYNC I IC301 2 Pin 34 H SYNC O IC301 21 19 20 22 1 Pin 6 CO IC401 2 Pin 5 HREF IC401 1 2 Pin 8 RO IC40...

Page 71: ...in 9 PLL1 IC401 2 Pin 10 HPOS IC401 26 27 28 1 Pin 31 SDA IC401 2 Pin 30 SCL IC401 1 Pin 13 PLL2 IC401 29 31 30 1 Pin 28 BOUT IC401 2 Pin 26 HDRV IC401 1 Pin 25 XRAY IC401 68 ViewSonic Corporation Con...

Page 72: ...IC401 2 Pin 10 REF IN IC501 38 36 39 37 1 Pin 19 VRB IC401 2 Pin 16 ISENSE IC401 1 Pin 22 VCAP IC401 2 Pin 20 VAG IC401 40 42 41 43 1 Pin 18 VEHT IC401 2 Pin 17 HEHT IC401 1 Pin 9 VCC H IC501 2 Pin 6...

Page 73: ...FLY GEN IC501 2 Pin 1 VIN IC501 1 VDY 2 G1 50 48 49 51 1 COLLECTOR Q402 2 Pin 1 T402 1 BASE Q401 2 COLLECTOR Q4O1 52 54 53 1 COMMON RL401 1 CENTER VR 401 2 HDY 70 ViewSonic Corporation Confidential Do...

Page 74: ...n 5 FBT3 T401 1 COLLECTOR Q409 60 58 59 1 Pin 1 GIN P601 2 Pin 3 RIN P601 1 Pin 5 BIN P601 62 80 64 78 63 79 1 Pin 14 DAC3 IC601 1 Pin 16 DAC1 IC601 2 Pin 15 DAC2 IC601 71 ViewSonic Corporation Confid...

Page 75: ...Pin 6 RIN IC601 1 Pin 7 GIN IC601 70 68 69 71 1 Pin 10 VREF REXT IC601 2 Pin 23 CLAMP IC601 1 Pin 24 HFLY IC601 2 Pin 22 ABL IC601 73 72 1 Pin 7 HBL P603 1 Pin 21 VREF OUT IC601 72 ViewSonic Corporati...

Page 76: ...in 7 VOUT 2 IC603 2 Pin 6 VOUT3 IC603 1 Pin 1 VIN1 IC603 2 Pin 8 VOUT1 IC603 88 86 87 89 1 Pin 11 KB CRT 2 Pin 8 KG CRT 1 Pin 9 VIN1 IC602 2 Pin 1 KR CRT 73 ViewSonic Corporation Confidential Do Not C...

Page 77: ...11 PCB Layout Diagrams 74 ViewSonic Corporation Confidential Do Not Copy E70f SB 3...

Page 78: ...E70f SB 3 Service Manual m e t I t n e l l e c x E d o o G r i a F d a B 1 2 3 t i n U r i a F d a B in the USA at facsimile 1 909 839 7943 You may also e mail any suggestions to the Director Quality...

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