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ViewSonic E70F Service Manual

ViewSonic E70F - 17" CRT Display Manual

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ViewSonic E70F | Service Manual - Page 1
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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of ViewSonic Corporation. All other trademarks used within this document are the property of their respective owners. Revision History Revision Date 1a 05/13/04 Description Of Changes Initial Release DCN- 4412 Approval Angela Lu ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 i
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25 5. Adjusting Procedure 28 6. Trouble Shooting Flow Chart 38 7. Recommended Spare Parts List 43 8. Exploded Diagram And Spare Parts List 52 9. Block Diagram 60 10. Schematic Diagrams 61 11. PCB Layout Diagrams 74 ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 ii
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servicing guide lines. 2. SAFETY CHECK Care should be taken while servicing this CRT display because of the high voltage used in the deflection circuits check. 5-2 Connect a 1500 ohm, 10 watt resistor, paralleled by a 0.15uF capacitor ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 1
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circuit is operating properly there is no possibility of X-Radiation problem immediate service is required CRT displays which are important for safety. These parts are identified ! by the international symbol on the schematic diagram ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 2
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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 OFF, SIGNAL ON AND OFF, ERRATIC, WRONG FREQUENCY OR NOISY INPUTS WHILE AT ANY POSSIBLE UNPLUGGING OF POWER OR SIGNAL, SETTINGS OF USER
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I A - B I < 2mm. I C - D I < 2mm. C A B D P IC T U R E BEZEL 3.4 GEOMETRY ADJUSTMENT 3.4.1 INPUT MODE 1-12. 3.4.2 PINCUSHION AND BARREL DISORTION C PINCUSION < 1m m (A,B,C,D) BARREL < 1m m (A,B,C,D) C' A A' B' B D' D ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 4
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1.5m m 3.4.4 ROTATE ADJUSTMENT 1.5m m 1.5m m 230mm h < 1mm 310mm 4. VIDEO ALIGNMENT / FUNCTION MEMORY RECALL 4.1 INPUT 1024x768 69KHZ FULL BLACK PATTERNS. 4.2 SET CONTRAST 0%, BRIGTHNESS 100%, RGB CUT OFF 0%, RGB DRIVER 50%, TURN THE G2 (SCREEN) KNOB TO OBTAIN RASTER LIGHT O/P ABOUT 0.25FL
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10 APPLY FULL WHITE PATTERN 4.11 ADJUST OSD ABL TO OBTAIN LIGHT O/P = 30+1FL FOR ALL MODE 4.12 APPLY FULL WHITE PATTERN ADJUST CONTRAST FROM 30FL TO 10FL AND CHECK THE CHROMATICALLY MEET FOLLOWING SPEC : 0.75mA. MAXIMUM AT 110/220VAC ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 6
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AND BARREL DISTROTION C PINCUSION < 2mm (A,B,C,D) BARREL < 1.5mm (A,B,C,D) C' A A' B' B D' D 8.2.3 TRAPEZOID AND PARALLOGRAM DISTROTION 310mm 230mm 2mm 2mm 2mm 2mm TRAPEZOID
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BAZEL 9. HORIZONTAL SWEEP 9.1 PULL-IN RANGE 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. ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 8
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10.1.2 OBSERVE THAT PICTURE LOCKS UP IN SYNC. 10.1.3 APPLY SIGNAL D MODE: 69K (CHG fv = 160HZ), MONITOR MUST BE IN SYNC. 11. CRT VOLTAGES / REGULATION / POWER 11.1 FILAMENT MEASUREMENT 11.1.1 APPLY SIGNAL A (FLAT ENTIRE DISPLAY AREA. ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 9
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/ 85Hz, PATTERN: 70x70mm WINDOW BLOCK. 14.2.2 SET BRIGHTNESS 50%. 14.2.3 SET COLOR TEMPERATURE 9300oK 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 ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 10
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14.6 BANDWIDTH RESOLUTION 14.6.1 APPLY 10 17. AUTO SIZING FUNCTION 17.1 INPUT ALL USER MODE AND CROSS PATTERN 17 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 ViewSonic Corporation Confidential - Do Not Copy E70f+SB
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PRESET CONDITION ( SAME AS RECALL ) 17.7 DIAGNOSTIC MESSAGE TEST. 17.7.1 AS 10KHZ
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TO SIMULATE S-RAY PROTECTION CIRCUIT: USE 18K, 5% RESISTOR , FRONT AND BACK SIDE OF THE MONITOR, THEN WRITE DOWN THE READINGS AT CHASSIS ALIGNMENT / TEST SPECIFICATION. 1. POWER SUPPLY V ± 5% V ± 5% V ± 5% V ± 5% V ± 5% V ± 5% V ± 5% ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 13
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CONTRAST ICON ON OSD. 3.2.2 PUSH "MENU 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. ViewSonic Corporation Confidential - Do Not Copy E70f+SB
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THAT NO DAMAGE OCCURS TO THE CRT OR THE MONITOR CIRCUITRY. 5. POWER LINE DISTURDANCE (P.L.D). PERIOD NOMINAL LINE -15%/ -15% 1 MINUTE 1 MINUTE 10 MINUTES. NO. SIGN OF FAULTS OR MALFUNCTIONS SHALL BE OBSERVED -IN TIME: 24 HOURS. ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 15
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: ALL MONITORS MUST COMPLY SIGNALS. INPUT LEVEL SPECIFICATION. A.INPUT LEVEL ANALOG 10 MG. 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. ViewSonic Corporation Confidential - Do Not Copy E70f+SB
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+ 14.268 (449) 0.064 (2) 1.112 (35) 12.711 (400) 0.381 (12) ViewSonic Corporation 2 VGA 640X 480 25.175 31.469 31.778 (800) 3.813 (96) 1.907 ) 59.940 16.684 (525) 0.064 (2) 1.048 (33) 15.254 (480) 0.381 (10) 17 3 MAC 640X 480 30.240 35.00 - 28.571 (864) 2.116 (64) 3.175 (96 Do Not Copy E70f+SB-3
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16.661 (1066 ) 0.047 (3) 0.594 (38 ) 16.005 (1024 ) 0.016 (1) 12 VESA 1024 X 768 94.500 68.677 + 14.561 (1376 ) 1.016 (96 ) 2.201 (208 ) 10.836 (1024 ) 0.508 (48 ) 85.000 + 11.765 (808 ) 0.044 (3) 0.524 (36 ) 11.183 (768 ) 0.015 (1) ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 18
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USER TIMING CHART MODE ) R V.ACTIVE(ms) (LINES) S V.FRONT PORCH(ms) (LINES) + 11.364 421 0.081 3 0.459 17 0.797 400 0.027 1 SCANTYPE INTERLACED NO 2 VESA 640X 480 31.500 37.861 - 26.413 832 1.27 40 4 0.563 20 10.81 384 0.014 0 YES ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 19
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) (LINES) SCANTYPE INTERLACED 8 VESA 1024X 768 75.000 56.476 - 17.707 1328 1.813 136 1.92 144 13.653 1024 0.32 24 70. 29 15.88 768 0.062 3 NO 10 VESA 1280X 960 108.000 60.000 + + 14.815 1600 1.185 128 2.37 256 10.667 1152 0.593 64 75 + 13.333 900 754 445 0.079 3 1.083 41 10.665 400 0.026 1 NO 13
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Adjusting the Screen Image Use the buttons on the monitor control panel to adjust the OnView® controls. CRT brightness of 120 nits for text and spreadsheet applications. "ULTRABRITE 3x: GRAPHICS/GAME": When selected, this UltraBrite ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 21
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adjusts the difference between the image background (black level) and the foreground (white level). Brightness adjusts the background black level of the screen image. Horizontal Hook adjusts the bottom corners of the screen image. ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 22
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menu, press button [2] to degauss the monitor manually. Important: Do not degauss repeatedly. Doing lines or finely detailed patterns. OSD Position allows you to move the User Color - Individual adjustments for red, green, and blue. ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 23
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Timing Mode. (See the table at the bottom of page 10.) Exception: This control does not affect changes made with the User Color control. Auto Sizing automatically adjusts horizontal and vertical size and position of the screen image. ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 24
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rectified by Q206, ZD201 and D208. 1.1.10 TP207 voltage output from TP204 and is manual degauss, IC301 pin20 output high level voltage to turn on Q201, RL101 and activate Degauss. 4. Rotation. IC301 pin18 PWM to rotation circuit ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 25
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5. Key Control: IC301 pin37~pin40 function as DAC switch input to control OSD display function. Pin37 : 2. Pin38 : Ϧ. Pin39 : ϯ. Pin40 FBT pin5 to IC401 for AFC to make pin26 H-Driver output at the same time. b. Pin6 and pin8 circuit. ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 26
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RAY protection circuit immediately active, H-Driver, B-Driver and V-OUT no output. The X-RAY radiation protection circuit used in this monitor is a latching type the monitor will shown to -180V then CRT will cut off the video output. ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 27
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BOARD ARE HOT GROUND. THE REMAINING BOARDS ARE COLD GROUND. 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 E70f+SB-3 28
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at TP201. 2.3 Adjust VR403 until voltage at TP208 = 63V̈́0.3V for LG CRT. 63.5V̈́0.3V for SDI CRT. 3. Size & Geometry Adjustment. 3.1 Raster Centering. 3.1.1 Input cross hatch pattern / Barrel distortion 230mm h ¡Ø 1mm 310mm Rotation ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 29
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VIDEO/MOVIE/DVD mode 4.9 APPLY 70mm x 70mm GREEN WINDOW PATTERN , ADJUST G-DRIVER TO OBTAIN GREEN WINDOW PATTERN LIGHT O/P ABOUT 30FL (5000OK) 4.10 APPLY WHITE WINDOW PATTERN, ADJUST R-DRIVER,B-DRIVER TO MEET FOLLOWING CHROMTICALLY SPEC 5000OK Æ x = 0.346 + 0.003, y = 0.359 + 0.003, Y = 45+ 2FL For
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P301 LED301 IC301 SW101 WP602 IC302 Adjust TP201=77V VR101 IC101 D401 VR401 Q401 Adjust raster center P401 T401 Q202 T101 WP603 Q101 C101 X101 ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 31
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D. Service mode brief Description. Connect sync cable first 1. Push ϭ2 & ϯ key and turn on monitor, enter burn-in mode then power off; 2. Push ϭ1 & Ϧ key and turn on monitor, enter service mode as below ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 32
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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 E70f+SB
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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 seconds, show OSD UNLOCK, then OSD can be opened again ViewSonic Corporation Confidential - Do Not Copy E70f+SB
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? No Check vertical circuit and power on again Is the LED normal? No Check video circuit Yes Are TP201~TP209 voltage normal? No Check D202, D203, D205, D206, D207, Q203, Q206, Q208, Q210 Is the T101 normal? No Yes Replace T101 ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 38
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input Check booster convertor circuit Q202, Q204, Q205 Check IC401 pin26 normal? Q402 is defective Horizontal drive is defective T402, Q401, T401 Diode modulation circuit is defictive C401, D401, C413, C414, C415, C417, Q409, C416 ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 39
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No FBT is defective R457, D420 are defective Is the voltage at the heater No pin9 of CRT socket normal? Heater voltage approx. 6.3V D206,Q208 are defective Video circuit Q419, Q420 IC301 pin29 brightness control are defective ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 40
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Is the IC501 pin2=14V pin5=-12V? Yes No Is the waveform of IC401 pin13, pin23 normal? IC401 is defective Check power supply 14V, -12V ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 41
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IC602 pin1, pin2, pin3 Yes Are the voltage on heater, No G1,G2 of CRT socket normal? CRT drive circuit is defective heater, power supply circuit D206, G1, G2, FBT, IC603 and its drive circuit Yes The CRT is defective. ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 42
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ABS 41 S7PFB1AT FUNCTION KEY ABS 41 S7PFB1AT F/B ABS SILVER E71F+SB-3 S7PFB1AT END BLOCK TOP J770SCM00A 400/40' END BLOCK BOTTOM J770SCM00A 400/40' CARTON 460*459*450 M/P/G--model CD-ROM E70FB J770SBM01C/02C/04C MANUAL VSC E70-10G J770SAM06A MAIN BOARD A(SSY ) D-SUB/HOUSING L=1500 IVO CAP
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T/R CORE BEAD 3.5*1.2*6 T/R CHOKE CD 3.9mH K LINEAR COIL 6uH 0.1*3.0 DIO ZEN 0.5W 17.5-18.3V DO-35 DIO ZEN 0.5W 19.5-20.4V DO-35 DIO ZEN 0.5W 11.9-12 2 WEEKS 2 WEEKS 2 WEEKS 2 WEEKS 2 WEEKS 2 WEEKS 2 WEEKS 2 WEEKS 2 WEEKS 2 WEEKS ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 44
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* PALLET WOOD 1120*940*120 * PALLET FUMIGATE 1120*470*120 CD-ROM E70FB J770SBM01C/02C/04C * CANCEL COIL 1007 #18 WIT L1130 * WIRE WITH TERMINAL 1007 #18 BLK L4 * WIRE WITH TERMINAL 1007 #18 BLK L1 * CRT GROUNDING WIRE J770SBM MANUAL VSC E70-10G J770SAM06A M/V BD ASSY J770 SBM WHITE * RES CF 1/4W 100
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E70f+SB-3 BOM Item ViewSonic P/N #N/A 75 #N/A #N/A #N/A #N/A 76 #N/A #N/A 77 #N/A #N/A #N/A #N/A #N/A 78 #N/A 79 #N/A 80 #N/A 81 #N/A 82 #N/A 1 1 1 1 3 1 1 2 2 1 1 1 1 2 1 1 3 4 5 2 2 1 1 2 1 1 1 1 1 1 2 1 3 5 2 4 1 1 1 2 2 1 2 1 1 1 2 3 3 2 1 5 2 2 1 1 3 1 3 1 Confidential - Do Not Copy E70f+SB-3
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+/-0.1% 2P 10*1 * FUSE TSC 4A 250V UL SEM PIG * PTC R=8 OHM +/-20% 27A 2P * NTC R=10 OHM L 3A 1 6 BA4471KG1H 2 BA4681KG1H 2 BA4102KG1H 2 BA5222KG1H 1 EC0103MG1H 3 BC4101KG1H 2 BC4221KG1H 1 BC5102KG1H 1 CHM0101JG1 1 ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 47
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AL 16V 100U M 5*11 TP5 * CAP AL 16V 1KU M 10*16 TP5 * CAP AL 16V 330U M 8*11.5 TP5 * CAP 4V DO-35 * DIO ZEN 0.5W 17.5-18.3V DO-35 * DIO ZEN 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3 1 1 2 1 1 1 1 3 1 1 1 1 1 1 1 ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 48
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TR 750V 12A TO-3PF 10 * TR 30V 0.1A TO IC WB AMP DRIVER RGB CRT TO-220-9P IC MASK OSD CONTROLLER DIP-20P 17 0.005 9.7 0.097 0.1 0.001 0.001 0.1 0.1 1 1 1 0.319 1.28 0.768 0.739 2.192 2.24 2.811 0.1 0.2 0.1 0.001 0.1 0.08 0.1 1 1 1 2 1 0.003 ViewSonic Corporation Confidential - Do Not Copy E70f+SB
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PAD 260*225*5 * PAPER 280*240*8 * PARTITION 265*230*22.5 10*8=80 * PE SHEET 610*230*0.15 * WIRE 0.1*40 USTC * 0.1 1 1 1 0.042 0.675 0.075 4.135 0.001 0.1 0.1 0.02 0.1 9.7 0.097 0.1 0.001 0.1 0.001 0.1 1 1 0.006 0.001 0.002 0.006 0.006 ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 50
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COIL 6uH 0.1*3.0 * FBT 17" 70KHZ 1.24mH * CORE 0.3A * SOCKET CRT NORMAL DOUBLE FOCUS * SECC 30*10 T1.5 * SPACER SUPPORT ABS 94V0 20.5*10*14 * 1 1 0.131 2 0.131 2 0.131 2 0.131 7 0.131 5 0.131 8 0.131 1 1 1 1 1 1 1 1 1 1 9.5 1.36 5.4 1 ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 51
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8. Exploded Diagram And Spare Parts List ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 52
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M-MS-0808-4206 3421047903 SPACER SUPPORT NYLON 94V-2 14*9*11.8 2 23 M-MS-0808-6945 3470401600 SPACER SUPPORT ABS 94V0 20.5*10*14.45 1 24 M-MS- C S S18C ZN 1 35 E-CRT-0409-0468 0741708210 CRT .25 17" 90D FLAT TCO 184uH 1 ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 53
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9. Block Diagram Model No. E70f+SB-3 ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 60
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10. Schematic Diagrams Model No. E70f+SB-3 ViewSonic Corporation 61 Confidential - Do Not Copy E70f+SB-3
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Model No. E70f+SB-3 ViewSonic Corporation 62 Confidential - Do Not Copy E70f+SB-3
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Model No. E70f+SB-3 ViewSonic Corporation 63 Confidential - Do Not Copy E70f+SB-3
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Model No. E70f+SB-3 ViewSonic Corporation 64 Confidential - Do Not Copy E70f+SB-3
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Model No. E70f+SB-3 ViewSonic Corporation 65 Confidential - Do Not Copy E70f+SB-3
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Drain for Q101 2=> Gate for Q101 5 6 1=> Pin 5 (COMP) IC101 2=> Pin 6 (SENSE) IC101 8 9 1=> Pin 19 (DAC ABL) IC301 2=> Pin 18 (ROTATION) IC301 ViewSonic Corporation 3 4 1=> Pin 2 (VFB) IC101 2=> Pin 4 (RT\CT) IC101 7 1=> FB+ 10 1=> Pin 29 (BRIGHT) IC301 Confidential - Do Not Copy E70f+SB-3 66
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I) IC301 2=> Pin 34 (H-SYNC O) IC301 19 20 13 16 1=> Pin 42 (V-SYNC I) IC301 2=> Pin 33 (V-SYNC O) IC301 17 18 1=> Pin 3 (HLOCK) IC401 2=> Pin 4 (FC) IC401 21 22 1=> Pin 6 (CO) IC401 2=> Pin 5 (HREF) IC401 ViewSonic Corporation 1=> 2=> Pin 8 (RO) IC401 Confidential - Do Not Copy E70f+SB-3 67
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Pin 12 (HFLY) IC401 26 1=> Pin 13 (PLL2) IC401 29 30 1=> Pin 28 (BOUT) IC401 2=> Pin 26 (HDRV) IC401 ViewSonic Corporation 24 25 1=> Pin 9 (PLL1) IC401 2=> Pin 10 (HPOS) IC401 27 28 1=> Pin 31 (SDA) IC401 2=> Pin 30 (SCL) IC401 31 1=> Pin 25 (XRAY) IC401 Confidential - Do Not Copy E70f+SB-3 68
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32 (VFOCUS) IC401 36 37 1=> Pin 22 (VCAP) IC401 2=> Pin 20 (VAG) IC401 40 41 1=> Pin 18 (VEHT) IC401 2=> Pin 17 (HEHT) IC401 ViewSonic Corporation 34 35 1=> Pin 23 (VOUT) IC401 2=> Pin 10 (REF+ IN) IC501 38 39 1=> Pin 19 (VRB) IC401 2=> Pin 16 (ISENSE) IC401 42 43 1=> Pin 9 (VCC-H) IC501 2=> Pin
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44 45 1=> Pin 4 (FLY-GEN) IC501 2=> Pin 1 (VIN-) IC501 48 49 1=> COLLECTOR Q402 2=> Pin 1 T402 52 53 1=> CENTER VR 401 2=> HDY- ViewSonic Corporation 46 47 1=> VDY2=> G1 50 51 1=> BASE Q401 2=> COLLECTOR Q4O1 54 1=> COMMON RL401 Confidential - Do Not Copy E70f+SB-3 70
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55 1=> COLLECTOR Q409 58 59 1=> Pin 1 (GIN) P601 2=> Pin 3 (RIN) P601 62,80 63,79 1=> Pin 16 (DAC1) IC601 2=> Pin 15 (DAC2) IC601 ViewSonic Corporation 56 57 1=> Pin 7 (ABL) T401 2=> Pin 5 (FBT3) T401 60 1=> Pin 5 (BIN) P601 64,78 1=> Pin 14 (DAC3) IC601 Confidential - Do Not Copy E70f+SB-3 71
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) IC601 68 69 1=> Pin 10 (VREF REXT) IC601 2=> Pin 23 (CLAMP) IC601 72 66,84 67,85 1=> Pin 5 (BIN) IC601 2=> Pin 6 (RIN) IC601 70 71 1=> Pin 24 (HFLY) IC601 2=> Pin 22 (ABL) IC601 73 1=> Pin 21 (VREF OUT) IC601 ViewSonic Corporation 1=> Pin 7 (HBL) P603 Confidential - Do Not Copy E70f+SB-3 72
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80 81 1=> Pin 1 (VIN1) IC603 2=> Pin 8 (VOUT1) IC603 86 87 1=> Pin 9 (VIN1) IC602 2=> Pin 1 (KR) CRT 82 83 1=> Pin 7 (VOUT 2) IC603 2=> Pin 6 (VOUT3) IC603 88 89 1=> Pin 11 (KB) CRT 2=> Pin 8 (KG) CRT ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 73
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11. PCB Layout Diagrams ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 74
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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 B.Are you satisfied with the E70f+SB-3 service manual? Item 1. Service Manual