Service Manual ViewSonic VE720m-1 VE720mb-1 Model No. VS10697 17” Color TFT LCD Display (VE720m-1_VE720mb-1_SM Rev. 1b Aug.
Copyright Copyright © 2006 by ViewSonic Corporation. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of ViewSonic Corporation.
TABLE OF CONTENTS 1. Precautions and Safety Notices 1 2. Specification 4 3. Front Panel Function Control Description 8 4. Circuit Description 12 5. Adjustment Procedure 13 6. Troubleshooting Flow Chart 45 7. Recommended Spare Parts List 53 8. Exploded Diagram and Exploded Parts List 57 9. Block Diagram 60 10. Schematic Diagrams 61 11.
1. Precautions and Safety Notices 1. Appropriate Operation (1) Turn off the product before cleaning. (2) Use only a dry soft cloth when cleaning the LCD panel surface. (3) Use a soft cloth soaked with mild detergent to clean the display housing. (4) Use only a high quality, safety approved AC/DC power cord. (5) Disconnect the power plug from the AC outlet if the product will not be used for a long period of time.
4. LCD Module Handling Precautions 4.1 Handling Precautions (1) Since front polarizer is easily damaged, pay attention not to scratch it. (2) Be sure to turn off power supply when connecting or disconnecting input connector. (3) Wipe off water drops immediately. Long contact with water may cause discoloration or spots. (4) When the panel surface is soiled, wipe it with absorbent cotton or other soft cloth. (5) Since the panel is made of glass, it may break or crack if dropped or bumped on hard surface.
Correct methods : Incorrect Methods : Only touch the metal-frame of the panel or the front Surface of the panel is pressed by fingers & this may cover of the monitor. cause “ MURA “ Do not touch the surface of the polarizer . Take out the monitor with cushion Take out the monitor by grasping the LCD panel. That may cause “ MURA“. Place the monitor on a clean & soft foam pad . Place the monitor on foreign objects .
2. Specification introduction FEATURES Size 17” Luminance (Typ, cd/㎡) 350 cd/㎡ Contrast Ratio (Typ) TFTLCD PANEL 350:1 Colors ( 6 bit + 2 bit FRC) 16.2 M colors Response Time (Typ) 8 ms Viewing Angle (H/V) 160 ° / 120 ° Recommend resolution 1280x1024@60Hz Analog (75ohms, 0.7/1.
GENERAL specification Test Resolution & Frequency 1280x1024 @ 60Hz Test Image Size Full Size Factory Default: Contrast and Brightness Controls Contrast = 70%, Brightness = 100% VIDEO INTERFACE Analog Input Connector DB-15 (Analog), refer the appendix A Digital Input Connector N/A Default Input Connector Defaults to the first detected input Video Cable Strain Relief Equal to twice the weight of the monitor for five minutes Video Cable Connector DB-15 Pin out Compliant DDC 2B 1.
SHALL START AND FUNCTION PROPERLY WHEN UNDER FULL LOAD, WITH ALL COMBINATIONS OF INPUT VOLTAGE, INPUT FREQUENCY, AND OPERATING TEMPERATURE SHALL BE ABLE TO WITHSTAND AN EN61000-4-4 ±2KV TRANSIENT TEST WITH NO DAMAGE Power Supply Cold Start Power Supply Transient Immunity Shall be able to withstand ±2KV (L-L) and ±2.
7 640 x 480 @ 72Hz, 37.9kHz Yes 8 640 x 480 @ 75Hz, 37.5kHz Yes 9 640 x 480 @ 85Hz, 43.27kHz Yes 10 720 x 400 @ 70Hz, 31.5kHz Yes 11 800 x 600 @ 56Hz, 35.1kHz Yes 12 800 x 600 @ 60Hz, 37.9kHz Yes 13 800 x 600 @ 75Hz, 46.9kHz Yes 14 800 x 600 @ 72Hz, 48.1kHz Yes 15 800 x 600 @ 85Hz, 53.7kHz Yes 16 832 x 624 @ 75Hz, 49.7kHz Yes 17 1024 x 768 @ 60Hz, 48.4kHz Yes 18 1024 x 768 @ 70Hz, 56.5kHz Yes 19 1024 x 768 @ 72Hz, 58.1kHz Yes 20 1024 x 768 @ 75Hz, 60.
3. Front Panel Function Control Description Front Panel Hardware Controls Power Switch (Front Head) Power Control, soft Power Switch. Power LED (Front Head) Green – ON Orange – Active Off Dark = Soft Power Switch OFF Front Panel Controls (Head) [ ] Power [XX] [ 1 ] [▲] [▼] [ 2 ] [ ] [ 1 ] BUTTON 1 [ 2 ] Button 2 [? ] UP ARROW BUTTON [? ] DOWN ARROW BUTTON [XX] Audio Mute on/off Note: Power Button, Button 1 and Button 2 and Mute Button must be one-shot logic operation. (i.e.
Main Menu Controls Auto Image Adjust*1 Contrast/Brightness*2*4 Audio Adjust Volume*4, Mute*4 Color Adjust sRGB, 9300K, 6500K(default), 5400, 5000, User Color [R, G, B] Information [H Frequency, V Frequency, Resolution, Pixel Clock, Serial Number, Model Number, “www.ViewSonic.com” ] Manual Image Adjust [H. Size*1, H./V.
Memory Recall Actions Memory Recall action on the analog and digital mode as below 1. Recall white balance to factory setting 2. Set the factory defaults as shown in Section 4-8 3. Clean all the mode setting buffer 4. Execute Auto Image Adjust Note: Memory Recall should have no effect for Language, Power Lock, User Color Settings or Input Priority Resolution Notice Actions 1. Resolution Notice OSD should show on screen after changing to non-native mode for 30 sec 2.
OSD Table Layer 1 Layer 2 Layer 3 Auto Image Adjust Contrast (+ / -) Contrast/Brightness Brightness (+ / -) Volume (+ / -) Audio Adjust Mute On/Off sRGB 9300K 6500K Color Adjust 5400K 5000K Red (+ / -) User Color Green (+ / -) Blue (+ / -) Information Horizontal Size +/H Position (+ / -) H/V Position Manual Image Adjust V Position (+ / -) Fine Tune +/- Sharpness +/English French German Spanish Language Select Italian Finnish Japanese Setup Menu Simplified Chinese Traditional Chinese Resolu
4. Circuit Description The TSUM57AK is total solution graphics processing IC for LCD monitors with panel resolutions up to SXGA. It is configured with a high-speed integrated triple-ADC/PLL, a high quality display processing engine, and an integrated output display interface that can support RSDS panel interface format. To further reduce system costs, the TSUM57AK also integrates intelligent power management control capability for green-mode requirements and spread- spectrum support for EMI management.
5. Adjustment Procedure A. Function Test and Alignment Procedure 1. All Modes Reset You should do “All Model Reset” (Refer to Chap 3. Hot Keys for Function Controls) first. This action will allow you to erase all end-user’s settings and restore the factory defaults. 2. Auto Image Adjust The Auto Adjust is aimed to offer a best screen quality by built-in ASIC. For optimum screen quality, the user has to adjust each function manually. A.Turn the computer and LCD monitor on. B.
9. White Box Test Signal: 1280*1024@60Hz Test Pattern: Window standard pattern Inspection Item: Particle, Line Defect, Power, Image Remain & Mura 10. Black Box Test Signal: 1280*1024@60Hz Test Pattern: Window standard pattern Inspection Item: Bright Dot, Line Defect & Power 11. RED Test Signal: 1280*1024@60Hz Test Pattern: Full Screen Red Inspection Item: Bright Dot, Partial & Line Defect 12.
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Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 ViewSonic Corporation 16 Confidential - Do Not Copy VE720m-1_VE720mb-1
B BIOS update procedure 1. To setup ISP environment Hardware: PC or Notebook , Parallel(Printer) cable , ISP tool( Fig 1) Software: ISP driver . If the O.S. was Win2000 or Win XP please have to install PORT95NT.
2. Install ISP 2.1 User could download ISP driver and PORT95NT install file from Myson Century website( //www.myson.com.tw ) 2.2 After extracting the zip file, the total files list as Fig 2.2, and double click the file of setup.exe to install. Fig 2.2 2.3 Press “Next” button to continue., see Fig 2.3 Fig 2.
2.4 Keep default setting or press “Change” button for selecting the path that you want , and then press“Next”button to continue, see Fig 2.4. Fig 2.4 2.5 Press “Install” button to continue, see Fig 2.5 Fig 2.
2.6 The Installer Information shows package warning, press “Ignore” button to continue, see Fig 2.6. Fig 2.6 2.7 Installation has finished, press “Finish” button, see Fig 2.7. Fig 2.
3. ISP security code 3.1 After installation, we could find the shortcut in the setting path or the program bar (default setting), see Fig 3.1. Fig 3.1 2.2 Security file is a key to use ISP function, press “確定” button, see Fig 3.2. Fig 3.
3.3 The warning is used to remind user of that different CPU rate may cause ISP function fail(it is limited by IIC protocol), press “確定” button, see Fig 3.3. Fig 3.3 2.4 Press“Create Security File” button to key in security code. Adjusting bar to decrease speed of IIC bus, see Fig 3.4. Fig 3.
3.5 At least 2 Command No of security code, see Fig 3.5, and different security code between hardware ISP and software ISP. The security code of software ISP is set by user while coding, but the security code of hardware ISP is set by Myson Century. Fig 3.
3.6 Fig 3.6 shows the setting for security code of hardware ISP, it needs 4 Command No, and key in command sequentially for 94, 94, AC, CA, 53. Fig 3.
3.7 Fig 3.7 shows the setting for security code of software ISP, it needs 2 Command No, and key in command sequentially for 7C, 4C, 77. The Command No and command must be set by user while coding. About the detail of setting, please refer to Section 6 Boot code of ISP. Fig 3.
4. Use ISP to program MCU 4.1 Select MTV type first, load the binary or Intel hex file that you want to program into the MCU, and select “Auto” item, then press “RUN” button, see Fig 4.1. 4.2 If user changes the MTV type, it must load file again, or the buffer of load file will be cleared. 4.3 CRC (cyclic redundancy check): the host can check CRC register’s result instead of reading every byte in flash. The message of Check MCU CRC OK means that the Host verify ok for the progress of program. Fig 4.
5 Use ISP to read MCU content 5.1 Only software ISP could read the MCU content, it is according to program the boot code while coding. The limitation is used for the security of customer’s code. Select “Read Target” item, and press“RUN” button, the MCU content will show as Fig 5.1. Fig 5.
5.2 If user uses hardware ISP to read MCU content, it shows as Fig 5.2. Fig 5.
6 Re-entry the ISP Mode When you could not select or click ‘Reset MCU’ button and enter ISP mode again, you refer the message as below: Note: (1)Disable the ‘Enter ISP Mode’ option to avoid the error message display. (2)If you using the MTV312M64 or before MCU serials, the MCU will always in ‘ISP Mode’even programming fail or erase MCU that instead of select or press ‘Reset MCU’.
7. Boot code of ISP 7.1 Hardware ISP (1) Without boot code (2) Fixed security code: 94, 94, AC, CA, 53 (3) Attention to the pin of HSCL (1) and HSDA (1) should keep in enable (4) MTV412M, MTV512M, CS8954 support hardware ISP 7.2 Software ISP (1) With boot code (2) User define the security code (3) Attention to the pin of HSCL (1) and HSDA (1) should keep in enable (4) Only software ISP could read the MCU content (5) MTV212M, MTV312M, MTV230M, MTV412M, MTV512M, CS8954 support software ISP 7.
7.4 The followings show the relationship between the code and the security code.
8. ISP Adaptor Schematic 9.
Packing For Shipping And Disassembly Procedure 1. Packing Procedure 1.1 Paste protection film to protect the monitor. (Figure 1) 1.2 Put the monitor in the PE bag and seal the bag with tape. (Figure 2) Figure 1 Figure 2 1.3 Put the cushions on the monitor. (Figure 3) 1.4 Place the monitor into the carton and then put all the accessories into the carton. As last, close the carton and seal it with tape.
Monitor Assembly and Disassembly 1 Separate Stand Assy 1.
2 Separate Rear Cover (Rear Case Assy) Loosen and remove 5 screws. Separate Bezel hooks to take Bezel and Rear Cover apart. Step 1: Remove Cover Hinges Step 2 : Loose and remove 2 screws. Step 3 : Separate Bezel hooks to take Bezel and Rear Cover apart.
3 Remove Power Board 3.1 Remove the Tinfoil 3.2 Remove FFC 3.
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4 Change New Power Board Step 1 : Insert New Power PCBA Step 2 : Fasten 3 fixed screws of Power PCBA Step 3 : Completed 5 Remove AD PCBA 5.1 Remove FFC Step 1 : Remove 2 FFC from AD PCBA Step 2 : Completed 5.
Step 2 : Remove AD PCBA Step 3 : Completed 6 Change New AD PCBA Step 1 : Place New AD PCBA Step 2 : Fasten 1 screw Step 3 : Insert 2 FFC Step 4 : Completed ViewSonic Corporation 39 Confidential - Do Not Copy VE720m-1_VE720mb-1
7 Metal Cover Assembly Step 1 : Join the cover hooks of X-PCB Step 2 : Fasten the 6 screws Step 3 : Fasten 2 screws Step 4 : Insert FFC Step 5 : Attach the Tinfoil Step 6 : Completed ViewSonic Corporation 40 Confidential - Do Not Copy VE720m-1_VE720mb-1
8 Separate Bezel Assy Step 1 : Loose and remove 4 screws Step 2 : Lift up LCD module and remove Bezel Step 3 : Completed 9 Remove OSD PCBA Step 1 : Remove FFC Step 2 : Separate both Audio Cable Step 3 : Loose and remove 2 screws ViewSonic Corporation 41 Confidential - Do Not Copy VE720m-1_VE720mb-1
Step 4 : Take OSD PCBA apart Step 5 : Completed 10 Change New OSD PCBA Step 1 : Place New OSD PCBA Step 2 : Fasten 2 screws Step 3 : Insert Audit Cable to connectors of OSD PCBA Step 4 : Completed ViewSonic Corporation 42 Confidential - Do Not Copy VE720m-1_VE720mb-1
11 Rear Cover Assy Assembly Step 1 : Place Rear Cover Step 2 : Join Rear Cover with Bezel Step 3 : Fasten 2 screws Step 4 : Join Cover Hinge ViewSonic Corporation 43 Confidential - Do Not Copy VE720m-1_VE720mb-1
12 Stand Assy Assembly Step 1 : Place Stand Assy Step 2 : Fasten 4 screws to fixed Stand Assy Step 3 : Join Seat Assy Step 4 : Completed ViewSonic Corporation 44 Confidential - Do Not Copy VE720m-1_VE720mb-1
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Defect Mode Failure Analysis Repair Testing ※ “ Panel Change” Should be Performed to Level 3 Repair stage A Display Noise Power on Check PCBA Display AD/B Change Power/B Change Abnormal Inverter/B Change Flicker CNT/B Change Beat Display Flicker Check Panel Panel Change Beat Display Shut Down Abnormal AD/B Change Display Wave Check PCBA Power/B Change CNT/B Change No Backlight Check Panel Panel Change Check Adapter Adapter Change NG Next Step B ViewSonic Corporation TEST Completed
Failure Analysis Repair Testing ※ “ Panel Change” Should be Performed to Level 3 Repair stage B Display White Out Check PCBA AD/B Change Power/B Change Booting Delay Check PCBA Inverter/B Change Brightness OSD/B Change Even Abnormal Check PCBA Inverter/B Change Beat Display No Backlight Power/B Change Check Panel Check Adapter Panel Change Adapter Change No signal AD/B Change R.G.
Defect Mode Failure Analysis Repair Testing ※ “ Panel Change” Should be Performed to Level 3 Repair stage C Horizontal Line Defect Vertical Weak Line Check PCBA AD/B Change Check Panel Panel Change Check PCB Horizontal Weak Line Vertical Band Defect Horizontal Band Defect Power Saving Display Abnormal Check PCBA Check PCB AD/B Change AD/B Change Peculiar Smell Check PCBA Power/B Change Check PCB Inverter/B Change NG Next Step TEST Complete ViewSonic Corporation 48 Confidential - Do No
Defect Mode Failure Analysis Repair Testing ※ “ Panel Change” Should be Performed to Level 3 Repair stage AD/B Change Power/B Change Power ON/OFF No Power Check PCBA Abnormal Turn Off Check PCBA CNT/B Change Inverter/B OSD/B Change Abnormal Check Wire Check Wire OSD Cable AC Power Change DC Power CNT Cable Change Check Adapter Adapter Change AD/B Change LED Display Abnormal LED Off Check PCBA Power/B Change Inverter/B LED Dark OSD/B Change LED Abnormal OSD Cable LED Loss Check Wire DC Po
Defect Mode Failure Analysis Repair Testing ※ “ Panel Change” Should be Performed to Level 3 Repair stage OSD Key Abnormal BIOS AD/B Change Unavailable &OSD CNT/B Change OSD Can’t Input Check PCB Power/B Change Inverter/B OSD Can’t Read OSD/B Change OSD No D-sub cable Display Check Wire OSD Jiggle VGA cable DVI cable OSD Display Abnormal Abnormal OSD cable Check BIOS BIOS Update AD/B Change Voice Loss Loudspeaker CNT/B Change Abnormal Loud Power/B Change Check PCBA Inverter/B Chang
Defect Mode Failure Analysis Repair Testing ※ “ Panel Change” Should be Performed to Level 3 Repair stage Other Abnormal Display Display Shut Check PCBA Down AD/B Change Power/B Change CNT/B Change Check Panel Display Flicker Check PCBA ((tapping ) AD/B Change CNT/B Change Check Panel DVI Signal Panel Change Check PCB Check PCB Panel Change AD/B Change Display Abnormal Check EDID Code Check PCB Check PCBA TV Function Display Abnormal Check Wire Check Controller EDID Update TV /B Cha
Trouble Shooting Analysis Check the information in this section to see if the problems can be solved before requesting repair. Note:The consumers are only allowed to solve the problems described as below. Any unauthorized product modification, or failure to follow instructions supplied with the product will end the warranty immediately. l No image u u l No Signal Input u l Use OSD Color Menu to adjust color setting. Dark area distorted u l Use OSD Color Menu to adjust color setting.
7. Recommended Spare Parts List ViewSonic Model Number: VS10697 Item 1 Serial No.
RECOMMENDED SPARE PARTS LIST (VE720mb-1) Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 ViewSonic Model Number:VS10697 Rev: 1a Serial No. Prefix: QEH Description Power Cord, No Bag (for China) Adapter, Asian Power Devices PC Board Assembly: Audio Control Board DC/AC Inverter Audio Control Board Cover Cabinets: Base Assembly Cover Front Panel Audio Cable Cables: FFC,1x15x180xc(3.5/3.5/5.0)x(0.035x0.
Item 1 2 3 4 5 6 ViewSonic Model Number: VS10697 Rev: 1a Serial No. Prefix: Q7S ViewSonic P/N N/A N/A N/A N/A N/A N/A MH0E50FK01 L3H007XXX7 73-C000047 36-D001185 7344191017 36-D001073 Ref.
ViewSonic Model Number : VS10697 Rev.:1a Serial No. Prefix: QEH Item ViewSonic P/N Ref.
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EXPLODED PARTS LIST (VE720m-1) ViewSonic Model Number: VS10697 Rev: 1a Serial No. Prefix: Q7S Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 ViewSonic P/N C-00005849 M-00000558 N/A N/A HW-00002078 B-00005846 B-00003613 CB-00000546 N/A CB-00000546 C-00005848 C-00005882 C-00005847 C-00002064 CB-00005850 HW-00002516 N/A HW-00005679 HW-00005884 HW-00005884 C-00005847 Ref.
PACKING PART LIST (VE720m/mb-1 ) ViewSonic Model Number: VS10697 Rev: 1a Item 1 2 3 4 5 6 7 ViewSonic P/N E-00000565 P-00000564 P-00000565 P-00000562 P-00000563 P-00000566 DC-00000550 Ref. P/N L3H007XXXX 7841719911 7841749915 7841725265 7841535161 7841749914 7741729166 Location LCD Panel , For 17.0" LCM, SXGA PE Foam Bag,Protector,490*560*0.
9. Block Diagram Speaker OSD Key Pad Audio Out Audio In 3.
VDVI R+ RG+ GB+ BCLK+ CLKR1 0603/390R/1% C129 NC B4 C20 33 0603/22p/50V/N Y1 14.
AU5V AU5V AU5V RA1 0603/1K/5% RA2 0603/1K/5% RA3 VR CA1 3 AU5V RA5 0603/100K/5% 21 7 RA6 PA1 2 10 2 10 11 3 1 11 3 1 2SJ-0523-003 LA3 LA4 LA5 CA13 0603/47p/50V/N 0603/20K/5% CA5 RA7 0603/220n/25V/Y MCB1608S600HA MCB1608S600HA 0603/0R/5% CA14 0603/20K/5% 0603/220n/25V/Y RA11 CA10 RA12 CA11 CA12 OPEN 0603/47p/50V/N 5 AU5V MUTE OPEN RA13 RA14 RA15 0603/20K/5% 13 RA19 RA20 HP Sense DC Vol V5A 3,4,5,7,8 V5A 15 Left Out - 17 Left Dock Left Gain 2 12 Left In Left Gai
Power Sequence : 5V -> VL -> VH & AVDD RP1 Open DP1 3 3 VGL 3 DP2 1 RP4 0603/100n/50V/Y 2 1 BZT52-C5V1S CP4 0603/4.7K/5% CP5 1210/1u/50V/7 QP3 open RP8 2 open RP9 0603/100K/5% 1 CP10 open VAA ZDP2 1 QP4 CP9 0603/47K/5% 1210/1u/50V/7 2N7002 RP11 0603/100K/5% CP11 0603/100n/25V/Y LP1 2 6 1 1 1 RP10 0603/68K/5% 3 3 SST3906F 1 2 1210/1u/50V/7 CP8 2 3 CP7 0603/100n/25V/Y VGH RP7 0603/33K/5% DP3 CP6 23V RP5 0603/100K/5% 1 1206/2.
2 2 V5A UDZSF-5.6B D4 1 2 3 4 ST_DET2 5 BAV99 D34 1 BAV99 C28 R6 R7 BAV70W U2 NC NC NC GND VCC VCLK SCL SDA 0603/3.9K/5% R147 5V_DVI 0603/47K/5% 8 7 6 5 R148 0603/10K/5% 0603/10K/5% 3 0603/10R/5% R138 D36 1 BAV99W 0603/10R/5% R135 D37 1 BAV99W 0603/10R/5% R136 0603/10R/5% R141 0603/10R/5% R142 0603/10R/5% 1 BAV99W D38 1 D39 BAV99W 1 1 1 1 1 1 1 1 D40 1 BAV99W BAV99W 1206/10u/16V/Y D47 C128 C137 C138 0603/100n/25V/Y UDZSF-5.
VCPU 10/20 R67 0603/10K/5% 03/08/04 2 03/08/04 Q14 1 3 SST3906F 2 4 VDD3 8 HSYNC VSYNC DA7/HCLAMP HLFHO/DA8 HALFV/DA9 NC NC MTV312M 5V_ON/OFF R150 0603/10K/5% R152 V5A R48 0603/4.7K/5% SCL1 SDA1 MTV312GMV64 0603/10K/5% R133 0603/10K/5% R134 0603/100R/5% R49 R50 0603/100R/5% MMBT3904-F 2 0603/4.7K/5% MUTE 2 XAO 6 RN1 VCM_PWM 7 V5A BK1608LL121 0603/1.3K/5% 0603/100n/25V/Y 10/20 R51 Q4 V5A R52 0603/249R/1% Q5 R54 1 0603/4.
CN4 CLKN_A CLKP_A GA[0..5] BA[0..5] 10/20 L15 BK1608LL121 + C69 1 1 1 5 C70 1206/10u/16V/Y 0603/100n/25V/Y V33P + C71 C72 2 + C67 1206/4.7u/35V/Y/E R56 C68 OPEN R121 OPEN 3 Q6 0603/5.6K/5% 0603/100n/50V/Y 0603/0R/5% 3 R58 R57 0603/16K/5% C66 0603/100n/25V/Y 1 GB[0..5] GB[0..5] 1 BB[0..5] BB[0..
2 0805/10R/5% C76 1206/10u/16V/Y VPREF1 R64 VPREF GMA[1..10] R65 0603/100n/25V/Y R68 C77 0603/100n/25V/Y C78 GMA1 0603/220R/1% C79 0603/100n/25V/Y 2.5V 1 2 R80 GMA2 0603/46.4R/1% C81 0603/100n/25V/Y R82 AZ1117H-ADJE1 Vout 2 4 4 Vin GMA3 0603/27.4R/1% C82 0603/100n/25V/Y VCM1 R84 0603/4.7K/5% LM358DR2G C86 2 VCM GMA4 0603/150R/1% C84 0603/100n/25V/Y 6 R163 1206/270R/5% C87 0603/100n/25V/Y 1206/22u/10V/Y GMA5 1 2 R111 0603/2.2K/5% 4.
12 13 14 15 R8 R10 R12 0603/0R/5% 2DS-D112-002 D16 1 R14 R17 C34 C35 OPEN VPORT0603220KV05T VPORT0603220KV05T DDC_CLK OPEN 0603/100R/5% C38 0603/47n/16V/7 OPEN GIN BIN SOG RD Recommended 0603/47n/16V/7 0603/47n/16V/7 0603/47n/16V/7 GNDR 1 GNDG 1 GNDB 1 HSYNC 1 VSYNC 1 D18 OPEN HSYNC1 V5A_ESD TP V5A_ESD 2 2 RIN 0603/47n/16V/7 C32 OPEN 0603100KV05T0603100KV05T0603100KV05T 0603/75R/5% 0603/75R/5% R18 C36 0603/100R/5% R19 0603/100R/5% C37 C29 3 3 D17 1 1 2 D15 R16 C33
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* Reader’s Response* Dear Readers: Thank you in advance for your feedback on our Service Manual, which allows continuous improvement of our products. We would appreciate your completion of the Assessment Matrix below, for return to ViewSonic Corporation. Assessment A. What do you think about the content of this Service Manual? Unit Excellent Good Fair Bad 1. Precautions and Safety Notices 2. Specification 3. Front Panel Function Control Description 4. Circuit Description 5. Adjustment Procedure 6.