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ViewSonic E70F - 17" CRT Display Service Manual

17" digital controlled color monitor
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Service Manual

ViewSonic E70f+SB-3
Model No. VCDTS23125
17" Digital Controlled Color Monitor
(E70f+SB-3_SM_832 Rev. 1a – May 2004)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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  • Page 1: Service Manual

    Service Manual ViewSonic E70f+SB-3 Model No. VCDTS23125 17” Digital Controlled Color Monitor (E70f+SB-3_SM_832 Rev. 1a – May 2004) ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583...

  • Page 2: Revision History

    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.

  • Page 3: Table Of Contents

    4. Circuit Description 5. Adjusting Procedure 6. Trouble Shooting Flow Chart 7. Recommended Spare Parts List 8. Exploded Diagram And Spare Parts List 9. Block Diagram 10. Schematic Diagrams 11. PCB Layout Diagrams Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...

  • Page 4: Precautions And Safety Notices

    (as shown in Fig.1). Use an AC voltmeter with 1000 ohm/volt or more sensitivity and measure the AC voltage across the combination 1500 ohm resistor and 0.15uF capacitor. Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 5 X-RADIATION, shock, fire, or other hazards. Do not modify the original design or this will void the original parts and labor guarantee. Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...

  • Page 6: Specification

    FORM THE MIDPOINT OF THE LEFT DISPLAY EDGE TO THE LEFT BEZEL EDGE IS WITHIN 2MM. OF THE DISTANCE FROM MIDPOINT OF THE RIGHT BEZEL EDGE. I A-B I < 2mm RASTER BEZEL Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 7 P I N C U S IO N < 1 m m (A ,B ,C ,D ) B A R R E L < 1 m m (A ,B ,C ,D ) Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 8 = 0.346 + 0.003, y = 0.359 + 0.003, Y = 85+ 3FL For GRAPHICS/GAME mode 5000 x = 0.346 + 0.003, y = 0.359 + 0.003, Y = 130+ 4FL For VIDEO/MOVIE/DVD mode Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 9 -13.5 V + 5% 7.3 DIELECTRIC WITHSTAND VOLTAGE: 7.3.1 PRIMARY TO SECONDARY: 2545VDC FOR 1 SEC. 7.3.2 PRIMARY TO SAFETY GROUND: 2545VDC FOR 1 SEC. 7.3.3 LEAKAGE CURRENT: 0.75mA. MAXIMUM AT 110/220VAC Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 10 8.2.1 APPLY SIGNAL D AT EACH MODE. 8.2.2 PINCUSION AND BARREL DISTROTION PINCUSION < 2mm (A,B,C,D) BARREL < 1.5mm (A,B,C,D) 8.2.3 TRAPEZOID AND PARALLOGRAM DISTROTION 310mm 230mm TRAPEZOID <2.0mm (A,B,C,D) PARALLELOGRAM <2.0mm (A,B,C,D) Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 11 9.1.1 APPLY SIGNAL D WITH A HORIZONTAL FREQUENCY OF 30KHZ MODE, MONITOR MUST BE IN SYNC. 9.1.2 APPLY SIGNAL D WITH A HORIZONTAL A HORIZONTAL FREQUENCY OF 70KHZ MODE, MONITOR MUST BE IN SYNC. Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 12 12.4.1 APPLY SIGNAL E (ALL “ ME “ PATTERN) AT 1024x768 85Hz MODE. 14.4.2 ADJUST CONTRAST FOR AN AREA OF LUMINANCE OF 28FL. 12.4.2 FOCUS MUST BE SET SUCH THAT INDIVIDUAL CHARACTER CAN BE DISTINGUISHED OVER THE ENTIRE DISPLAY AREA. Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 13 14.2.1 APPLY SIGNAL 69KHZ/ 85Hz, PATTERN: 70x70mm WINDOW BLOCK. 14.2.2 SET BRIGHTNESS 50%. 14.2.3 SET COLOR TEMPERATURE 9300 14.2.4 WITH CONTRAST AT MAXIMUM, 45 + 3FL FOR TEXT SPREADSHEET MODE 85+5 FL FOR GRAPHICS/GAME MODE 150+5 FL FOR VIDEO/MOVIE/DVD MODE Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 14 17.2 PRESS THE AUTO SIZING KEY , THE PICTURE WILL BE MUTE AROUND 2~4 sec , THEN PICTURE WILL BE IN THE CENTER OF THE MONITOR AND PICTURE CAN’T OVER THE FRONT BEZEL. 17.3 The PICTURE SIZE ARE AS FOLLOWING : H-SIZE : 310 + 5 mm V-SIZE : 230 + 5 mm Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 15 18. DDC TEST: CONNECTS SIGNAL CABLE INTO DDC TESTER TO PROGRAM EDID DATA SAVED IN IC303 18.1 THE EDID DATA SAVED IN IC302 SHOULD BE SAME AS SPECIFIED IN APPENDIX-D 18.2 EACH PRODUCTION UNIT SHOULD HAVE IT’S OWN SERIAL NEMBER, WEEK OF MANUFACTURE. Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 16 V ± 5% TP204 = 7.5 V ± 5% TP205 = 12 V ± 5% TP206 = 6.3 V ± 5% TP207 = 5.5 V ± 5% TP208 =-13.5 V ± 5% Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 17 B. THE TREE RADIATING EDGES FROM THAT CORNER. C. SIX FLAT SURFACES OF THE PACKAGE. 2.2.2 DROP HEIGHT: 76.2CM. 2.2.3 ACCEPTANCE CRITERIA THE MONITOR SHALL HAVE NO DEGRADATION IN MECHANICAL OR FUNCTION PERFORMANCE ERROE AFTER BEGIN SUBJECTED THERE TESTS. Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 18 TEMPERATURE OF 25 C CALCUTION SHALL BE PER MIL-HDBK-217F WITH GROUND BEGIN. 7. BURN-IN A> AC LINE: 110V/ 60HZ OR 230V / 50HZ. B> TEMPERATURE: 25 + 5 C> BRUN-IN TIME: 24 HOURS. Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 19 ASIA : BH = 400 + 10MG, BV = 270 + 10 MG. AUSTRALIA : BH = 270 + 10MG, BV = -570 + 10 MG. CHINA DOMESTIC : BH = 340 + 10MG, BV = 360 + 10 MG. Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 20 0 . 021 0 . 021 S V.FRONT PORCH (ms) ( 12 ) ( 10 ) ( 3 ) ( 1 ) ( 1 ) ( 1 ) ( 1 ) (LINES) Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 21 (LINES ) 11.179 12.795 12.749 16.005 11.183 R V.ACTIVE (ms) (600 ) (768 ) (768 ) (1024 ) (768 ) (LINES ) 0.019 0.017 0.05 0.016 0.015 S V.FRONT PORCH (ms) (LINES ) Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 22 R V.ACTIVE (ms) (LINES ) 0 . 027 0 . 237 0 . 845 0 . 028 0 . 026 0 . 77 0 . 014 S V.FRONT PORCH (ms) (LINES ) SCANTYPE INTERLACED Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 23 10 . 546 R V.ACTIVE (ms) (LINES ) 0 . 053 0 . 062 0 . 017 0 . 015 0 . 026 0 . 026 S V.FRONT PORCH (ms) (LINES ) SCANTYPE INTERLACED Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...

  • Page 24: Front Panel Function Control Description

    Power button Displays the Main Scrolls through Power light: Menu or exits and options or adjusts green = on saves settings orange = power save Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 25 Parallelogram they are parallel. adjusts the top corners of the screen image. Top Hook adjusts the bottom corners of the screen image. Bottom Hook Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 26 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. ViewSonic Corporation Confidential - Do Not Copy 70f+SB-3...
  • Page 27 10.) Exception: This control does not affect changes made with the User Color control. automatically adjusts horizontal and vertical size Auto Sizing and position of the screen image. Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...

  • Page 28: Circuit Description

    (pin34) and vertical sync (pin33) of positive polarity to IC401 TDA9113 pin1, pin2. 2. PWM Control. The PWM control of IC301 is pin29 (Brightness), pin19 (DAC ABL), and pin18 (Rotation), the PWM output via R, C after rectified may control each function Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 29 Take a pulse from FBT pin5 and accumulates to become a DC voltage via D423, C437, then transformed by VR403 to a conjunction to IC401 pin15 ( 5V) outputs pulse by pin28 via Q202 to boost converter circuit. Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 30 5-2 Horizontal blanking pulse are fed to IC601 pin24 and let video O/P amp cut off during the period of horizontal retrace, while mode change, IC301 pin16 will pull high to turn off. The G1 voltage will down to –180V then CRT will cut off the video output. Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...

  • Page 31: Adjusting Procedure

    10. DISCHARGE OF CRT ANODE SHOULD BE DONE ONLY TO CRT GROUND STRAP. 11 . GEOMETRIC MEASUREMENT IS ASSUMED TO BE MAKING ALONG A STRAIGHT SURFACE WITH A FLAT RULE OR TEMPLATE. ViewSonic Corporation Confidential - Do Not Copy 70f+SB-3...
  • Page 32 3.4.2 Pincushion and barrel distortion. 3.4.3 Trapezoid and parallelogram distortion trapezoid Pinchshion 1mm (A’,B’,C’,D’) / parallelogram 1.5mm. Barrel 1mm (A,B,C,D) 3.4.4 Rotate adjustment. Pincushion / Barrel distortion h ¡Ø 1mm 230mm 310mm Rotation ViewSonic Corporation Confidential - Do Not Copy 70f+SB-3...
  • Page 33 4.15 USER COLOR MUST BE DEFAULTED AS 9300OK. Focus adjustment. 5.1 APPLY SIGNAL ALL “ME” PATTERN AT 1024*768 69K MODE. 5.2 SET BRIGHTNESS 50% CONTRAST 100%. 5.3 SET FOCUST CONTROL FOR BEST FOCUS. ViewSonic Corporation Confidential - Do Not Copy 70f+SB-3...
  • Page 34 Q401 SW304 P401 P601 P602 SW303 P603 Q202 IC604 T401 IC501 IC601 SW302 IC603 IC602 SW301 WP603 P301 WP602 IC303 T101 LED301 IC301 Adjust TP201=77V IC302 VR101 IC101 Q101 SW101 X101 C101 ViewSonic Corporation Confidential - Do Not Copy 70f+SB-3...
  • Page 35 D. Service mode brief Description. Connect sync cable first 1. Push & key and turn on monitor, enter burn-in mode then power off; Push & key and turn on monitor, enter service mode as below ViewSonic Corporation Confidential - Do Not Copy 70f+SB-3...
  • Page 36 ViewSonic Corporation Confidential - Do Not Copy 70f+SB-3...
  • Page 37 ViewSonic Corporation Confidential - Do Not Copy 70f+SB-3...
  • Page 38 ViewSonic Corporation Confidential - Do Not Copy 70f+SB-3...
  • Page 39 1. Super Brightness OSD Expression(looply-select 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 ViewSonic Corporation Confidential - Do Not Copy 70f+SB-3...
  • Page 40 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 seconds, show OSD UNLOCK, then OSD can be opened again ViewSonic Corporation Confidential - Do Not Copy 70f+SB-3...

  • Page 41: Trouble Shooting Flow Chart

    R112 normal? R111, R112 Check video circuit Check horizontal and vertical circuit Are TP201~TP209 voltage normal? Check D202, D203, D205, D206, D207, Q203, Q206, Q208, Q210 Is the T101 normal? Replace T101 Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 42 Is the waveform of Q401 defective T402, Q401, "BASE" normal? T401 0.8Vp-p Diode modulation circuit is Is the diode modulatic defictive C401, D401, circuit normal? C413, C414, C415, C417, Q409, C416 CRT is defictive Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 43 Heater voltage approx. 6.3V Turn the FBT screen clockwise Video circuit Q419, Q420 Does the entire screen IC301 pin29 brightness light up? control are defective FBT is defective Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 44 Is the waveform at pin6 Is the IC501 pin2=14V 45Vp-p of IC501 normal? pin5=-12V? Is the waveform of IC401 Check the dflection Yoke pin13, pin23 normal? IC401 is defective Check power supply 14V, -12V Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 45 Are the voltage on heater, heater, power supply circuit G1,G2 of CRT socket D206, G1, G2, FBT, IC603 and normal? its drive circuit Heater: 6.3VDC G1: -65V G2: 550V The CRT is defective. Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...

  • Page 46: Recommended Spare Parts List

    7. Recommended Spare Parts List E70f+SB-3 RSPL Recent Revision(s) Item Reference P/N ViewSonic P/N Descr. of revision(s) 720840115 E-RL-0414-0106 Removed from RSPL 720840115 E-RL-0414-0123 Added to RSPL 736000026 E-YK-0413-0060 Removed from RSPL 736000026 E-X-0415-0134 Added to RSPL 3080421200 A-VC-0101-0344 Removed from RSPL...

  • Page 47: Viewsonic Corporation

    Item Revision History ViewSonic P/N Reference P/N Description Location Universal number# Lead time Added 04/19/04 E-D-0403-1395 200131610020 DIO BRD 4A 600V 3S(KBJ) CR101 D3SB60 2 WEEKS Added 04/19/04 E-D-0403-2797 201300620034 DIO FRD 1A 800V DO-41 100nS D108 UF108G T/B 2 WEEKS...
  • Page 48 E70f+SB-3 BOM Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty E-L-0407-1493 2840003906 * DEGAUSSING COIL 14.4 OHM K 62-0101-06 A-PC-0106-0150 3090107600 * AC POWER CORD L=1800 BLACK UL/CSA M-SCW-0824-0410 3100300600 * SCREW M M3*0.5*6 PAN C S+P S20C ZN...
  • Page 49 E70f+SB-3 BOM Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty #N/A 0013102000 RES CF 1/4W 1K J R120,R128,R202,R481, RD 1/4W 1K JT #N/A R482 #N/A 0013102800 RES CF 1/4W 1K J SMALL R212,R220,R340,R495, RD16ST52 1K J #N/A R618,R619,R621,R622,...
  • Page 50 E70f+SB-3 BOM Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 143 #N/A 0013821000 RES CF 1/4W 820 J R433 RD 1/4W 820 JT 144 #N/A 0013821800 RES CF 1/4W 820 J SMALL R430 145 #N/A 0013822800 RES CF 1/4W 8.2K J SMALL...
  • Page 51 E70f+SB-3 BOM Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 218 E-C-0404-3655 1142930800 * CAP CD 1KV 100P K Y5P TP5 C116 219 E-C-0404-3729 1142938800 * CAP CD 1KV 220P K Y5P TP5 C214 BM5221KG1H 220 E-C-0404-3656 1142945800...
  • Page 52 E70f+SB-3 BOM Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty #N/A D503 E-D-0403-1937 204322000207 * DIO SW 0.25A 200V SOD-27(DO-35) D111,D112,D411,D412, BAV21,133 #N/A D423,D607,D609,D611, #N/A D613,D614,D615 292 E-D-0403-1977 205012420137 DIO SI 5A 1500V/600V LF664(TO-220F D401 FMQ-2FUR 293 #N/A...
  • Page 53 E70f+SB-3 BOM Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 293 M-MS-0808-7442 3500536300 * EPE PAD 265*230*13 0.013 294 P-BX-0601-0594 3510050400 * CARTON D-2 495*295*267 0.002 295 M-MS-0808-5289 3510120800 * TRAY CS-2 A 0.013 296 M-MS-0808-7046 3510134300 * PAPER PAD 485*270*8 0.002...
  • Page 54 E70f+SB-3 BOM Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 371 #N/A 4010170500 * WIRE CU 0.1#*30 2UEWN 372 M-MS-0808-5351 4020103000 * EPOXY TWO COMPONENT CLEAR C907 0.068 373 M-MS-0808-5352 4020200300 * SOLVENT XYLENE 0.058 374 M-MS-0808-5150 4020201200...

  • Page 55: Exploded Diagram And Spare Parts List

    8. Exploded Diagram And Spare Parts List Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 56 E70f+SB-3 Exploded Part List Item ViewSonic P/N Reference P/N Decription C-FP-0301-0958 3361088601 F/B ABS SILVER E71F+SB-3 S7PFB1AT PL-NB-0707-0196 3360625100 POWER KNOB ABS 41 S7PFB1AT M-MS-0808-7805 3360506500 LED LENS PMMA NAT Y0-487 S7FB2AT M-MS-0808-7806 3462003900 SPRING COMPRESSION SUS304 ID6.5 L12 PL-FK-0709-0120...
  • Page 57 ViewSonic Corporation Confidential - Do Not Copy 70f+SB-3...
  • Page 58 Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 59 Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 60 Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 61 Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 62 Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 63 9. Block Diagram Model No. E70f+SB-3 ViewSonic Corporation Confidential - Do Not Copy 70f+SB-3...
  • Page 64 10. Schematic Diagrams Model No. E70f+SB-3 ViewSonic Corporation Confidential - Do Not Copy 70f+SB-3...
  • Page 65 Model No. E70f+SB-3 ViewSonic Corporation Confidential - Do Not Copy 70f+SB-3...
  • Page 66 Model No. E70f+SB-3 ViewSonic Corporation Confidential - Do Not Copy 70f+SB-3...
  • Page 67 Model No. E70f+SB-3 ViewSonic Corporation Confidential - Do Not Copy 70f+SB-3...
  • Page 68 Model No. E70f+SB-3 ViewSonic Corporation Confidential - Do Not Copy 70f+SB-3...
  • Page 69 2=> Pin 4 (RT\CT) IC101 1=> Pin 5 (COMP) IC101 1=> FB+ 2=> Pin 6 (SENSE) IC101 1=> Pin 19 (DAC ABL) IC301 1=> Pin 29 (BRIGHT) IC301 2=> Pin 18 (ROTATION) IC301 Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 70 1=> Pin 41 (H-SYNC I) IC301 2=> Pin 4 (FC) IC401 2=> Pin 34 (H-SYNC O) IC301 1=> Pin 6 (CO) IC401 1=> 2=> Pin 5 (HREF) IC401 2=> Pin 8 (RO) IC401 Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 71 2=> Pin 10 (HPOS) IC401 1=> Pin 13 (PLL2) IC401 1=> Pin 31 (SDA) IC401 2=> Pin 30 (SCL) IC401 1=> Pin 28 (BOUT) IC401 1=> Pin 25 (XRAY) IC401 2=> Pin 26 (HDRV) IC401 Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 72 1=> Pin 22 (VCAP) IC401 2=> Pin 16 (ISENSE) IC401 2=> Pin 20 (VAG) IC401 1=> Pin 18 (VEHT) IC401 1=> Pin 9 (VCC-H) IC501 2=> Pin 17 (HEHT) IC401 2=> Pin 6 (VO+) IC501 Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 73 1=> Pin 4 (FLY-GEN) IC501 1=> VDY- 2=> Pin 1 (VIN-) IC501 2=> G1 1=> COLLECTOR Q402 1=> BASE Q401 2=> Pin 1 T402 2=> COLLECTOR Q4O1 1=> COMMON RL401 1=> CENTER VR 401 2=> HDY- Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 74 1=> Pin 1 (GIN) P601 1=> Pin 5 (BIN) P601 2=> Pin 3 (RIN) P601 62,80 64,78 63,79 1=> Pin 16 (DAC1) IC601 1=> Pin 14 (DAC3) IC601 2=> Pin 15 (DAC2) IC601 Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 75 1=> Pin 10 (VREF REXT) IC601 1=> Pin 24 (HFLY) IC601 2=> Pin 23 (CLAMP) IC601 2=> Pin 22 (ABL) IC601 1=> Pin 7 (HBL) P603 1=> Pin 21 (VREF OUT) IC601 Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 76 1=> Pin 1 (VIN1) IC603 2=> Pin 6 (VOUT3) IC603 2=> Pin 8 (VOUT1) IC603 1=> Pin 11 (KB) CRT 1=> Pin 9 (VIN1) IC602 2=> Pin 8 (KG) CRT 2=> Pin 1 (KR) CRT Confidential - Do Not Copy ViewSonic Corporation 70f+SB-3...
  • Page 77 11. PCB Layout Diagrams ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3...

  • Page 78: Block Diagram

    Company: Add.: Fax: Tel: E-mail: After completing this form, please return it to ViewSonic Quality Assurance in the USA at facsimile 1-909-839-7943. You may also e-mail any suggestions to the Director, Quality Systems & Processes (marc.maupin@viewsonic.com) ViewSonic Corporation Confidential - Do Not Copy...

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