Download ViewSonic VG2021m-1 Service manual

Service Manual
ViewSonic VG2021m-1
Model No. VS11234
20” Color TFT LCD Display
(VG2021m-1_SM Rev. 1a Apr. 2006)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA – (800) 888-8583
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.
Disclaimer
ViewSonic makes no representations or warranties, either expressed 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 trademark of ViewSonic Corporation.
ViewSonic is a registered trademark of ViewSonic Corporation.
All other trademarks used within this document are the property of their respective owners.
Revision History
Revision
SM Editing Date
1a
04/03/2006
ECR Number
ViewSonic Corporation
Description of Changes
Editor
Initial Release
Jamie Chang
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VG2021m-1
TABLE OF CONTENTS
1.
Precautions and Safety Notices
1
2.
Specification
4
3.
Front Panel Function Control Description
12
4.
Circuit Description
17
5.
Adjustment Procedure
18
6.
Troubleshooting Flow Chart
51
7.
Recommended Spare Parts List
59
8.
Exploded Diagram and Exploded Parts List
63
9.
Block Diagram
67
10. Schematic Diagrams
68
11. PCB Layout Diagrams
84
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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.
(6) If smoke, abnormal noise, or strange odor is present, immediately switch the LCD display off.
(7) Do not touch the LCD panel surface with sharp or hard objects.
(8) Do not place heavy objects on the LCD display, video cable, or power cord.
(9) Do not use abrasive cleaners, waxes or solvents for your cleaning.
(10) Do not operate the product under the following conditions:
- Extremely hot, cold or humid environment.
- Areas containing excessive dust and dirt.
- Near any appliance generating a strong magnetic field.
- In direct sunlight.
2. Caution
No modification of any circuit should be attempted. Service work should only be performed after you are thoroughly
familiar with all of the following safety checks and servicing guidelines.
3. Safety Check
Care should be taken while servicing this LCD display. Because of the high voltage used in the inverter circuit, the
voltage is exposed in such areas as the associated transformer circuits.
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.
(6) Since CMOS LSI is used in this module, take care of static electricity and ensure human earth when handling.
(7) Do not open or modify the Module Assembly.
(8) Do not press the reflector sheet at the back of the module in any direction.
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(9) In the event that a Module must be put back into the packing container slot after it was taken out of the container, do
not press the center of the CCFL Reflector edge. Instead, press at the far ends of the CFL Reflector edge softly.
Otherwise the TFT Module may be damaged.
(10) At the insertion or removal of the Signal Interface Connector, be sure not to rotate or tilt the Interface Connector of the
TFT Module.
(11) After installation of the TFT Module into an enclosure (LCD monitor housing, for example), do not twist or bend the
TFT Module even momentarily. When designing the enclosure, it should be taken into consideration that no
bending/twisting forces may be applied to the TFT Module from outside. Otherwise the TFT Module may be damaged.
(12) The cold cathode fluorescent lamp in the LCD contains a small amount of mercury. Please follow local ordinances or
regulations for disposal.
(13) The LCD module contains a small amount of materials having no flammability grade. The LCD module should be
supplied with power that complies with the requirements of Limited Power Source (IEC60950 or UL1950), or an
exemption should be applied for.
(14) The LCD module is designed so that the CCFL in it is supplied by a Limited Current Circuit (IEC60950 or UL1950).
Do not connect the CCFL to a Hazardous Voltage Circuit
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Correct methods :
Only touch the metal-frame of the panel or the front
cover of the monitor.
Do not touch the surface of the polarizer .
Incorrect Methods :
Surface of the panel is pressed by fingers & this may
cause “ MURA “
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 .
That could scratch the surface of panel
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2. Specification
INTRODUCTION
FEATURES
Size
Luminance (Typ)
Contrast Ratio (Typ)
Colors
Response Time (Typ)
Viewing Angle (H/V)
VG2021M-1
20.1 “
300 cd/㎡
500:1
16.2
M colors
TFTLCD PANEL
8 ms
150 / 130 @CR>=10
170/ 150
@CR>= 5
Recommend resolution
1400 X 1050 @60Hz
Analog (75ohms, 0.7/1.0 Vp-p)
Yes
Input Signal
Digital
Yes
Separate Sync
Yes
Sync Compatibility Composite Sync
No
Sync on Green
No
PC
Yes
Compatibility
Power Mac
Yes
TV Box (NextVision 6)
Yes
Power Voltage
AC 100-240V, 50/60Hz
Yes
Power
On Mode(Max / Typ)
45 W / 30 W
Consumption
Active Off Mode (Max)
1W
Audio
W
2.5W
Tilt
-5 ° ~ 20 °
Swivel ( -xx ° - xx °)
No
Ergonomics
Pivot ( XX ° - XX °)
No
Height Adjust ( XX-XX mm)
No
OSD Control
[ ] [ 1 ] [ 2 ] [? ] [? ] [X X]
Yes
Physical (W x H x D)
459 x 465 x 205(mm ),
18.1 x18.3x8.1(in)
Dimension
Package (W x H x D)
490x510x160 (mm)
19.3 x 20.1 x6.3 (in)
Physical (lbs / Kg)
13.7 lbs (6.2 kgs )
Weight
Package (lbs / Kg)
16.9 lbs( 7.7 kgs )
Temperature (℉/℃)
41℉-95 ℉ / 5℃-35℃
Operating
Condition
Humidity (%)
20 % - 80 %
Temperature (℉/℃)
-4℉-131℉ / -20℃-55 ℃
Storage Condition
Humidity (%)
20 % - 85 %
CB / TCO03/ UL/cUL / FCC-B / ICES 003 / Argentina-TUV/S /
Regulation
NOM / EPA Energy Star / TUV/Ergo / ISO13406-2 / TUV/GS / CE /
GOST-R / SASO / BSMI / PSB / C-Tick / MIC / CCC
GENERAL specification
Test Resolution & Frequency
Test Image Size
Contrast and Brightness Controls
“1400 X 1050” @ 60Hz
Full Size
Factory Default
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VIDEO INTERFACE
Input Connector(refer the appendix A)
Default Input Connector
Video Cable Strain Relief
Video Cable Connector DB-15 Pin out
Video Signals
Video Impedance
Maximum PC Video Signal
Maximum Mac Video Signal
Sync Signals
DDC 1/2B
Sync Compatibility
Video Compatibility
Resolution Compatibility
Exclusions
Analog : D-sub 15 ,
Digital: DVI-D
Defaults to the first detected input
Equal to twice the weight of the monitor for five
minutes
Compliant DDC 2B
1. Video RGB (Analog): Separate
2. DVI (Digital)
75 Ohms (Analog), 100 Ohms (Digital)
950 mV with no damage to monitor
1250 mV with no damage to monitor
TTL
Compliant with Revision 1.3
Separate Sync
Shall be compatible with all PC type computers,
Macintosh computers, and after market video cards
640 x 350, 640 x 480, 720 x 400 * (640 x 400*) 800 x
600, 832 x 624, 1024 x 768, 1152x864, 1280X960,
1280x1024, 1400x1050
* The image vertical size might not be full screen.
But the image vertical position should be at the
center
Not compatible with interlaced video
POWER SUPPLY
Internal Power Supply
Input Voltage Range
Input Frequency Range
Short Circuit Protection
Over Current Protection
Leakage Current
EFFICIENCY
Fuse
Power Dissipation
Max Input AC Current
INRUSH CURRENT (COLD START)
Power Supply Cold Start
Power Supply Transient Immunity
Power Supply Line Surge Immunity
Power Supply Missing Cycle Immunity
Power Supply Acoustics
Power Saving Operation(Method)
Power Consumption
Recovery Time
Part Number: DAC-12M033 AF(DELTA)
90 TO 264 VAC
47.5 TO 63 HERTZ
Output can be shorted without damage
N/A
3.5mA (Max) at 254VAC / 60Hz
80 % typical at 115VAC Full Load
Internal and not user replaceable
50 Watts (typ)
1.0Arms @ 90VAC, 0.8 Arms @180VAC
30 A @ 120VAC, 60 A(max) @220VAC
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 ANSI/IEEE
C62.41-1980 6000V 200 ampere ring wave transient
test with no damage
Shall be able to withstand 1.5 times nominal line
voltage for one cycle with no damage
Shall be able to function properly, without reset or
visible screen artifacts, when ½ cycle of AC power is
randomly missing at nominal input
The power supply shall not produce audible noise
that would be detectable by the user. Audible shall
defined to be in compliance with ISO 7779 (DIN
EN27779:1991) Noise measurements of machines
acoustics. Power Switch noise shall not be
considered
VESA DPMS Signaling
ON Mode < 40 W (max) / 30 W (typ)
ACTIVE OFF < 1W
ON MODE = N/A, ACTIVE OFF < 3 SEC
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ELECTRICAL REQUIREMENT
Horizontal / Vertical Frequency
Horizontal Frequency
Vertical Refresh Rate
Maximum Pixel Clock
Sync Polarity
30 – 82 KHZ
56– 76 HZ.
156 MHz
Independent of sync polarity.
Timing Table
Item
Timing
1.
640 x 400 @ 70Hz, 31.5kHz
2.
640 x 480 @ 60Hz, 31.5kHz
3.
640 x 480 @ 67Hz, 35.0kHz
4.
640 x 480 @ 72Hz, 37.9kHz
5.
640 x 480 @ 75Hz, 37.5kHz
6.
720 x 400 @ 70Hz, 31.5kHz
7.
800 x 600 @ 56Hz, 35.1kHz
8.
800 x 600 @ 60Hz, 37.9kHz
9.
800 x 600 @ 75Hz, 46.9kHz
10.
800 x 600 @ 72Hz, 48.1kHz
11.
832 x 624 @ 75Hz, 49.7kHz
12.
1024 x 768 @ 60Hz, 48.4kHz
13.
1024 x 768 @ 70Hz, 56.5kHz
14.
1152X 864 @75Hz, 67.5kHz
15.
1152X 870 @75Hz, 70.8kHz
16.
1024 x 768 @ 75Hz, 60.0kHz
17.
1280 x 1024 @ 60Hz, 63.4kHz
18.
1280 x 1024 @ 75Hz, 79.97kHz
19.
1400x 1050 @ 60Hz, 65.3kHz
Analog
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Digital
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Primary Presets
“1400 x 1050” @ 60Hz
User Presets
Number of User Presets (recognized timings) Available: 10 presets total in FIFO configuration
Changing Modes
l Maximum Mode Change Blank Time for image stability : 3 seconds (Max), excluding
“Auto Adjust” time
l Under DOS mode (640 x 350, 720 x 400 & 640 x 400), it should recall factory setting
when execute “Auto Adjust”
l The monitor needs to do “Auto Adjust” the first time a new mode is detected
l (see section “0-Touch™ Function Actions”)
l While running Change Mode, Auto Adjust or Memory Recall, the image shall blank
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Panel Characteristics:
1st Source Panel
Type
Active Size
Pixel Arrangement
Pixel Pitch
GLASS TREATMENT
# OF BACKLIGHTS
BACKLIGHT LIFE
Luminance – Condition:
CT = 6500K, Contrast = Max,
Brightness = Max
Brightness Uniformity
Contrast Ratio
Color Depth
Viewing Angle (Horizontal/ vertical)
Response Time
10%-90% @ Ta=25°C
Panel Defects
A201P1
“TN Technology”
408.24 (H) x 306.18(V)
RGB Vertical Stripe
0.2916 mm
Anti Glare (Hard coating 3H)
4 CCFL edge-light (2 top / 2 bottom)
50,000 Hours (Min)
300 cd/m2 (Typ after 30 minute warm up)
200 cd/m2 (Min after 30 minute warm up)
77%(typ); 67% (min)
500:1 (Typ), 350:1 (Min)
16.2 million colors (6 bit +FRC panel)
150/130 (typ), 130/110(min) @ CR>10,
170/150 (typ), 150/130 (min) @ CR>5
8 ms (Tr= 2 ms, Tf = 6 ms) (Typ)
18 ms (Tr= 7 ms, Tf = 11 ms) (Max)
Please see Panel Quality Specifications.
IMAGE PERFORMANCE
Factory Defaults
Item
Contrast
Brightness
Volume
Balance
Bass
Treble
Color Temperature
Defaults
70%
100%
50%
N/A
N/A
N/A
6500K
Display Size
Horizontal Display Size, Primary Preset
Vertical Display Size, Primary Preset
Item
Sharpness
OSD H. Position
OSD V. Position
OSD Time Out
OSD Background
OSD PIVOT
Resolution Notice
720x400/640x400
Defaults
100%
50%
50%
15 Sec
On
N/A
on
720x400
Full Screen
Full Screen
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3. Front Panel Function Control Description
Adjusting the Screen Image
Use the buttons on the front control panel to display and adjust the OSD controls which display
on the screen.
Power light
Blue = ON
Orange = Power Saving
Standby Power On/Off
Audio Mute button turns the sound off
Displays the Main Menu or exits the control screen
and saves adjustments.
Scrolls through menu options and adjusts the displayed control.
Also a shortcut to display the Contrast adjustment control screen.
Displays the control screen for the highlighted control.
Also toggles between two controls on some screens.
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Do the following to adjust the screen image:
1. To display the Main Menu, press button [1].
NOTE: All On View menus and adjustment screens disappear automatically after about 15 seconds. This is adjustable through
the OSD timeout setting in the setup menu.
2. To select a control you want to adjust, press p or qto scroll up or down the Main Menu.
3. After the control is selected, press button [2]. A control screen like the one shown below
appears.
The command line at the bottom of the control screen
tells what to do next from this screen. You can toggle
between control screens, adjust the selected option, or
exit the screen.
4. To adjust the setting, press the up p or down q buttons.
5.To save the adjustments and exit the menu, press button [1] twice.
The following tips may help you optimize your display:
• Adjust the computer's graphics card so that it outputs a 1400 x 1050 @ 60Hz video signal to
the LCD display. (Look for instructions on “changing the refresh rate” in the graphics card's
user guide.)
• If necessary, make small adjustments using H. POSITION and V. POSITION until the
screen image is completely visible. (The black border around the edge of the screen should
barely touch the illuminated “active area” of the LCD display.)
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Main Menu Controls
Adjust the menu items shown below by using the up p and down q buttons.
Control Explanation
Auto Image Adjust sizes and centers the screen image automatically.
Contrast adjusts the difference between the image background (black level) and the
foreground (white level).
Brightness adjusts background black level of the screen image.
Audio Adjust
Volume increases the volume, decreases the volume, and mutes the audio.
Mute temporarily silences audio output.
Color Adjust provides several color adjustment modes, including preset color temperatures
and a User Color mode which allows independent adjustment of red (R), green (G), and
blue (B). The factory setting for this product is 6500K (6500 Kelvin).
sRGB-This is quickly becoming the industry standard for color management, with support
being included in many of the latest applications. Enabling this setting allows the LCD
display to more accurately display colors the way they were originally intended. Enabling
the sRGB setting will cause the Contrast and Brightness adjustments to be disabled.
9300K-Adds blue to the screen image for cooler white (used in most office settings with
fluorescent lighting).
6500K-Adds red to the screen image for warmer white and richer red.
5400K-Adds green to the screen image for a darker color.
5000K-Adds blue and green to the screen image for a darker color.
User Color Individual adjustments for red (R), green (G), and blue (B).
1. To select color (R, G or B) press button [2].
2. To adjust selected color, press pand q
Important: If you select RECALL from the Main Menu when the product is set to a Preset
Timing Mode, colors return to the 6500K factory preset.
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Control Explanation
Information displays the timing mode (video signal input) coming from the
graphics card in the computer, the LCD model number, the serial number, and
the ViewSonic® website URL. See your graphics card’s user guide for
instructions on changing the resolution and refresh rate (vertical frequency).
NOTE: VESA 1400 x 1050 @ 60Hz (recommended) means that the resolution
is 1400 x 1050 and the refresh rate is 60 Hertz.
Manual Image Adjust Sub-menu
H. Size (Horizontal Size) adjusts the width of the screen image.
H./V. Position (Horizontal/Vertical Position) moves the screen image left or
right and up or down.
Fine Tune sharpens the focus by aligning text and/or graphics with pixel boundaries.
NOTE: Try Auto Image Adjust first.
Sharpness adjusts the clarity and focus of the screen image.
Setup Menu displays the menu shown below
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Language Select allows the user to choose the language used in the menus and control
screens.
Resolution Notice allows the user to enable or disable this notice.
If you enable the Resolution Notice shown above and your computer is set at a resolution
other than 1400 x 1050, the following screen appears.
OSD Position allows the user to move the OSD menus and control screens.
OSD Timeout sets the length of time the OSD screen is displayed. For example, with a “30
second” setting, if a control is not pushed within 30 seconds, the display screen disappears.
OSD Background allows the user to turn the OSD background On or Off.
Memory Recall returns the adjustments back to factory settings if the display is operating
in a factory Preset Timing Mode listed in the Specifications of this manual.
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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, an integrated DVI receiver, 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.
The TSUM57AK incorporates the world’s first coherent oversampled RGB graphics ADC in a monitor
controller system. The oversampling ADC samples the input RGB signals at a frequency that is much
higher than the signal source pixel rate. This can preserve details in the video signal that ordinarily would
be lost due to input signal jitter or bandwidth limitations in non-oversampled systems. The TSUM57AK
also incorporates a new Dynamic Frame Rate (DFR) generator for the digital output video to the display
panel that preserves the advantages of a fixed output clock rate, while eliminating the output end of frame
short-line.
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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. Press the ‘Auto’button on monitor keypad to Auto Adjust.
C. The LCD monitor will start the Auto Adjust process automatically and run for 10 consecutive
seconds, during which time you will notice the image change.
3. Firmware
Test Patten: Burn in Model (Refer to Chap3. Hot Keys for Function Control)
-Make sure the F/W is the latest version.
4. DCC
Test Patten: EDID program
-Make sure it can pass test program.
5. Window Shut Down
Test Signal: 1400*1050@60Hz
Test Pattern:
Checkered Pattern Every One Pixel (50%Green & 50%Blue)
Inspection Item: Flicker, Mura
6. Window BG
Test Signal: 1400*1050@60Hz
Test Pattern:
Window standard pattern
Inspection Item: Line Defect, Function Defect & Mura
7. 25 Gray
Test Signal: 1400*1050@60Hz
Test Pattern:
Full Screen 25% White (Gray)
Inspection Item: Particle, Line Defect & Mura
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8. 50 Gray
Test Signal: 1400*1050@60Hz
Test Pattern:
Full Screen 50% White (Gray)
Inspection Item: Bright Dot, Particle, Line Defect & Mura
9. White Box
Test Signal: 1400*1050@60Hz
Test Pattern:
Window standard pattern
Inspection Item: Particle, Line Defect, Power, Image Remain & Mura
10. Black Box
Test Signal: 1400*1050@60Hz
Test Pattern:
Window standard pattern
Inspection Item: Bright Dot, Line Defect & Power
11. RED
Test Signal: 1400*1050@60Hz
Test Pattern:
Full Screen Red
Inspection Item: Bright Dot, Partial & Line Defect
12. Green
Test Signal: 1400*1050@60Hz
Test Pattern:
Full Screen Green
Inspection Item: Bright Dot, Partial & Line Defect
13. Blue
Test Signal: 1400*1050@60Hz
Test Pattern:
Full Screen Green
Inspection Item: Bright Dot, Partial & Line Defect
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14. Gray_Scale_0-100_V64
Test Signal: 1400*1050@60Hz
Test Pattern:
Vertical 64 (256) Gray Scale (Right → Left，From 0 to 100% White)
Inspection Item: Line Defect & Function Defect
15. Function Test Display pattern
Item
3
4
5
Description
Vertical 64 (256) Gray Scale
Gray_Scale_0-100_V
(right→left，From 0 to 100% White)
Horizontal 64 (256) Gray Scale
Gray_Scale_0-100_H
(up→down，From 0 to 100% White)
Black
Full Screen Black
Red
Full Screen 50% Red
Green
Full Screen 50% Green
6
Blue
Full Screen 50% Blue
Figure6
7
White
Full Screen White
Figure7
8
Black_Tile
Black Tile Under White Background
Figure 8
1
2
Pattern
Remark
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 1
Figure 2
Figure 3
Figure 4
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Figure 5
Figure 6
Figure 7
Figure 8
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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.exe
Fig1
In order to ensure can execute ISP program, please set BIOS in PC or Notebook as Fig 2
Fig 2
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2. Install ISP
2.1 User could download ISP driver and PORT95NT install file from Myson Century website (http://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 2.3
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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 2.5
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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 2.7
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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 3.2
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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 3.4
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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 3.5
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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 3.6
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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 3.7
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VG2021m-1
4. Use ISP to program MCU
4.1 elect 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 f user changes the MTV type, it must load file again, or the buffer of load file will be cleared.
4.3 RC (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 4.1
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VG2021m-1
5 Use ISP to read MCU content
5.1 nly 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 5.1
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VG2021m-1
5.2 If user uses hardware ISP to read MCU content, it shows as Fig 5.2.
Fig 5.2
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VG2021m-1
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’.
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VG2021m-1
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
7.3 Boot code of software ISP
(1) Initialize MCU
(a) Define the I/O pin to HSCL (1) and HSDA (1)
(b) Define the slave B address
(c) Enable 8051 INT1 (ISR 2)
(2) Coding for INT1 while get into ISP mode
(a) Clear watchdog to prevent reset during ISP period
(b) Disable all interrupt to prevent CPU wake-up
(c) Write ISP slave address
(d) Write 93h to ISP enable address to enable ISP
(e) Enter 8051 idle mode
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VG2021m-1
7.4 The followings show the relationship between the code and the security code.
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VG2021m-1
8. ISP Adaptor Schematic
9. Adatptor Linking
ISP Adaptor
Connect with
Printer Cable
25Pins to 25Pins
The Monitor Set
PC/HOST
Connect with
VGA Cable
15Pins to 15Pins
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VG2021m-1
Packing For Shipping And Disassembly Procedure
Packing For Shipping
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. (Figure 4)
Figure 4
Figure 3
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VG2021m-1
D. Monitor Assembly and Disassembly
1. Separate Stand Assy
1.1 Remove Stand Cover
Step 1 :
Remove the Seat Assy
Step 2 :
Remove the Stand Cover.
Step 3 :
Press the mark A of Rear Cover
mark A
Step4 :
Remove the Stand Assy
Step 5 :
Completed.
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VG2021m-1
2. Separate Rear Cover (Rear Case Assy)
Separate Bezel hooks to take Bezel and Rear Cover apart.
Step 1 :
Loose and remove 4 screws.
Step 2 :
Separate Bezel hooks to take
Bezel and Rear Cover apart.
Step 3 :
Remove Rear Cover.
Step 4 :
Completed.
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VG2021m-1
3. Remove Power Board and AD Board
3.1 Remove Metal Cover
Step 1 :
Remove FFC from OSD Board.
Step 2 :
Lift up LCD module and remove bezel.
Step 3 :
Remove 2 pieces of Backlight wires.
Step 4 :
Remove 2 pieces of Backlight wires.
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VG2021m-1
Step 5 :
Loose and remove 4 screws.
Step 6 :
Remove the Support Plate.
Step 7 :
Loose and remove 2 screws.
Step 8 :
Loose and remove 2 screws.
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VG2021m-1
Step 9 :
Loose and remove 2 screws.
Step 10 :
Remove the PCBA Cover
3.2 Remove Power Board and AD Board
Step 1 :
Loose and remove 4 screws.
Step 2 :
Remove Lips Board
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VG2021m-1
Step 3 :
Remove the FFC.
Step 4 :
Remove 2 pieces of FFCs.
Step 5 :
Loose and remove 4 screws.
Step 6 :
Remove AD PCBA.
Step7 :
Completed.
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VG2021m-1
4. Change New AD Board and Power Board
Step 1 :
Place new AD Board.
And fasten 4 fixed screws.
Step 2 :
Fasten 4 fixed screws.
Step 3 :
Insert 2 pieces of FFCs .
Step 4 :
Insert FFC.
Step 5 :
Insert new Lips Board.
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VG2021m-1
Step 6 :
Fasten 4 fixed screws.
Step 7 :Completed.
5. Remove OSD Board
Step 1 :
Remove the FFC
Step 2 :
Separate both Audio Cables and OSD
board.
Step 3 :
Loose and remove 2 screws.
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VG2021m-1
Step 4 :
Remove the FFC and OSD board.
Step 5:
Completed.
6.Change New OSD Board
Step 1 :
Place new OSD Board and insert FFC.
Step 2 :
Fasten 2 screws.
Step 3 :
Join new OSD board.
Step 4 :
Insert Audio cables and FFC.
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VG2021m-1
7. Add Cover to AD PCB Heatsink
Step 1 :
Join the PCB Cover.
Step 2 :
Fasten 2 fixed screws.
Step 3 :
Fasten 2 fixed screws.
Step 4 :
Fasten 2 fixed screws.
Step 5 :
Join the Support Plate.
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VG2021m-1
Step 6 :
Fasten 4 fixed screws
Step 7 :
Insert 2 pieces of Backlight wires.
Step 8 :
Insert 2 pieces of Backlight wires.
Step 9 :
Join LCD module and remove bezel.
Step 10 :
Insert FFC.
Step 11 :
Completed.
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VG2021m-1
8. Rear Assy & Stand Assembly
Step 1 :
Place Rear Cover.
Step 2 :
Fasten 4 fixed screws.
Step 3 :
Place the Stand Assy.
Step 4 :
Join the Stand Cover.
Step 5 :
Join the Seat Assy
Step 6 :
Completed.
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VG2021m-1
6. Troubleshooting Flow Chart
Defect Mode
Failure Analysis
Light On Test
Repair
Testing
※ “ Panel Change” Should be Performed to Level 3 Repair
stage
Flash Dots
Abnormal
Display
Bright Dot
Dark Dot
Backlight
Light Leakage
Mura
Check Panel
Panel Change
Image Sticking
Brightness spot
Particle
Dot Defect
Image Remain
Group Bright
Dots
Others Cosmetics
Defect
NG
Next Step
A
TEST
Completed
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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
AD/B Change
Check PCBA
Display
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
TEST
Completed
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VG2021m-1
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.B
Check PCBA
CNT/B Change
Check Wire
VGA cable
Display
Abnormal
DVI cable
Gray Scale
Display
Abnormal
Check Panel
Panel Change
NG
Next Step
TEST
C
Completed
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VG2021m-1
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
AD/B Change
Check PCBA
Check PCB
AD/B Change
Peculiar Smell
Power/B Change
Check PCBA
Check PCB
Inverter/B Change
NG
Next Step
TEST
Complete
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VG2021m-1
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
OSD Cable
Check Wire
AC Power Change
DC Power CNT
Cable Change
Check Adapter
Adapter Change
AD/B Change
LED Display
Abnormal
LED Off
Power/B Change
Check PCBA
Inverter/B
LED Dark
OSD/B Change
LED Abnormal
OSD Cable
LED Loss
Check Wire
DC Power CNT
Cable Change
LED Flicker
Adapter Change
NG
Next Step
TEST
Completed
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VG2021m-1
Defect Mode
Failure Analysis
Repair
Testing
※ “ Panel Change” Should be Performed to Level 3 Repair
stage
Abnormal BIOS
&OSD
OSD Key
AD/B Change
Unavailable
CNT/B Change
OSD Can’t
Input
Power/B Change
Check PCB
Inverter/B
OSD Can’t
Read
OSD/B Change
OSD No
D-sub cable
Display
OSD cable
Check Wire
OSD Jiggle
VGA cable
DVI cable
OSD Display
Abnormal
Abnormal
Check BIOS
BIOS Update
AD/B Change
Voice Loss
Loudspeaker
CNT/B Change
Abnormal
Loud
Power/B Change
Check PCBA
Inverter/B Change
L/R
Abnormal
OSD/B Change
Check Wire
No Voice
L/R Same
OSD Cable Change
Loudspeaker
Check Loudspeaker
Change
Volume
Loudspeaker
Next Step
NG
TEST
Noise
Completed
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VG2021m-1
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
Panel Change
Check PCBA
((tapping )
CNT/B Change
Check Panel
DVI Signal
AD/B Change
Panel Change
Check PCB
AD/B Change
Check PCB
Display
Abnormal
Check
EDID Code
Check PCB
Check PCBA
TV Function
Display
Abnormal
Check Wire
EDID Update
TV /B Change
AV Cable Change
Check Controller
Remote controller
Change
Next Step
NG
TEST
Complete
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VG2021m-1
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.
Color too dark
u
l
Use OSD Image Menu to adjust H_Position and V_Position.
Check image size setting.
Perform Auto Adjust.
Uneven color
u
l
Use OSD Image Menu to adjust H_Position and V_Position.
Check image size setting.
Perform Auto Adjust.
Size is not appropriate
u
u
u
l
Reset the LCD monitor
Take off extra accessories (such as signal extension cord).
Image is not centered
u
u
u
l
Check the signal connection between the computer and LCD monitor.
Perform Auto Adjust.
Distorted image
u
u
l
Adjust brightness and contrast by OSD.
Irregular image
u
u
l
Adjust brightness and contrast by OSD.
Image too dark
u
l
Adjust Phase.
Image too bright
u
l
Check the computer image output resolution and frequency and compare the value with the
preset values (Please refer to [Appendix-Display Mode]).
Fuzzy Image
u
l
Check the signal connection between the computer and LCD monitor.
“Out of Range”
u
l
Make sure power button is ON.
Check whether the LCD monitor and computer power cords are plugged and whether there is
a supply of power.
Use OSD Color Menu to adjust color setting.
White color is not white
u
Use OSD Color Menu to adjust color setting.
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VG2021m-1
7. Recommended Spare Parts List
RECOMMENDED SPARE PARTS LIST (VG2021m-1)
ViewSonic Model Number: VS11234
Rev: 1a
Serial No. Prefix: Q6U
Item
1 Accessories:
2
3
Board Assembly:
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Cabinets:
Cables:
Documentation:
Hardware:
Packing Material:
Description
ECR/ECN
Power Code,UL,SVT#18/3C,75°C,LP-30B+LS-13,
L=1830+/-50mm,Black
Adapter - Lips With Audio,DAC-12M033 AF,00
A,12 V/0.7 A,5 V/3 A,4L,5 mA,2650 V
Power Switch Board ,A201P1-P01-H,A201P1-P01H-K1,1101-01,Rev.01
OSD BOARD ,A201P1-P01-H,A201P1-P01-HK2,1101-01,Rev.01
Audio Control Board ,A190A2-A02-H,A190A2-A02H-S1,1206-03,Rev.04
Rear Assy,A201P1-H14,Black
Cover Hinge Assy,A201P1-H14,Black
Cover AD Assy
Seat Assy,A201P1-H14,Black
Bezel Assy,A201P1-H14,Silver/Black
Stand Assy,A201P1-H14,Black
Metal Frame Front,A201P1,SECC t=0.6mm
Accessory Cable,DVI,Black
Accessory Cable,D-Sub,BLACK
FFC,862P051787A/CFC2108,6 Pins
FFC,862P051786A/CFC2109,15 Pins
FFC,0.5x36x117xD(3.5/3.5/5/5),36 Pins
Accessory Cable,Audio,Black
Safety Label for ,A201P1-H04
SN Label for ,A201P1-H04
Carton Label for ,A201P1-H04,76.2 mmx76.2 mm
Carton Label for ,A201P1-H04,20 mmx20 mm
MENU for A201P1-H04
Screw,M3*P0.5*6
SCREW,M3,P=1.27 mm,L=8 mm
SCREW,M4,P=0.7 mm,L=8 mm
SCREW,M3,P=0.5 mm,L=4 mm
SCREW,M4,P=0 mm,L=11.8 mm
Bag,700 mmx500 mmx0.13 mm
Carton,A201P1-H04,490 mmx160 mmx510 mm
Cushion,A201P1-H14,EPS,White,495 mmx150
mmx114 mm,EPS-FORM(Right),Green II
Cushion,A201P1-H14,EPS,White,495 mmx150
mmx114 mm,EPS-FORM(Left),Green II
ViewSonic P/N
A-00000458
Ref. P/N
32E1818015
Location
Universal number#
Q'ty
1
A-00005706
27-D004260
1
B-00005703
35-D007988
1
B-00005704
35-D007990
1
B-00005705
35-D005062
1
C-00005671
C-00005672
C-00005673
C-00005674
C-00005683
C-00005684
C-00005685
CB-00002083
CB-00004287
CB-00005675
CB-00005676
CB-00005677
CB-00005678
DC-00005666
DC-00005667
DC-00005668
DC-00005669
DC-00005670
HW-00000555
HW-00000557
HW-00004042
HW-00005679
M-00000559
P-00002374
P-00005680
P-00005681
40-D007468
40-D007467
41-D002955
40-D007461
40-D007460
40-D007465
41-D004344
32F0000004
32F3018003
32-D007466
32-D007464
32-D008152
32F2818011
77-D007646
77-D007648
77-D007645
77-D008329
76-D007999
42A9930014
42A9930017
42-D000649
42A9930008
42A9940007
7841919941
78-D007998
78-D007568
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
4
2
1
15
4
1
1
1
P-00005682
78-D007563
1
Remark 1: Above listed items are examples, supplier can expand the rows to add more necessary items.
Remark 2: All revised RSPLs with newly added items or any change made should be highlighted and correlated with the ECN/ECR approved by
ViewSonic Corporation. This is to eliminate repeated cross checks of each item between this version and prior versions.
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VG2021m-1
BOM LIST (VG2021m-1)
ViewSonic Model Number: VS11234
Rev: 1a
Serial No. Prefix: Q6U
Item
ViewSonic P/N
Ref. P/N
1
2
3
4
5
6
N/A
N/A
N/A
N/A
N/A
N/A
MK1P101K01
36-D001339
73-C000047
LXK109XXXX
7344191017
36-D004403
7
N/A
8
9
10
11
12
13
14
N/A
N/A
N/A
HW-00000554
M-00000559
HW-00004042
N/A
15
N/A
16
17
18
19
N/A
N/A
N/A
N/A
20
N/A
21
A-00000458
22
A-00002058
23
A-00002059
24
A-00000571
25
A-00002057
26
27
28
29
30
A-00004047
N/A
CB-00004287
CB-00002083
N/A
31
N/A
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
HW-00000555
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
HW-00000557
N/A
N/A
N/A
N/A
N/A
N/A
HW-00002076
N/A
DC-00000586
N/A
P-00002374
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Description
Location
20.1" Common Semi Product,A201P1,1400 X 1050,
Driver IC,Scan,A170E1,HX8633CPD400,256Channel
ACF,COG,AC-8405Z-23 1.5mmX100M,100000 mmx1.5 mm
20.1" TN Panel Base
ACF,AC-4251FY-16,100M/RL
Driver IC,COF,Data,A201P1-P01-H
73-D002676
35-D004526
7349951002
PK1PFH1Q02
42A9930008
42A9940007
42-D000649
41-D002955
Common
Common
Common
Common
Common
ACF,PCB,AC-9825R-35,100000 mmx1.5 mm
PCBA for ,A201P1-H,A201P1-P01-H-X,1101-01,Rev.02
Silicone,TORAY/-9187L,330g
Olympic,20.1"TN,Function BOM,D-sub+DVI+Audio
SCREW,M3,P=0.5 mm,L=4 mm
SCREW,M4,P=0 mm,L=11.8 mm
SCREW,M4,P=0.7 mm,L=8 mm
Cover AD Assy,A190A2
Lips With Audio,DAC-12M033 AF,00 A,12 V/0.7 A,5 V/3 A,4L,5
27-D004260
mA,2650 V
41-D004344
Metal Frame Front,A201P1
35-D005062
PCBA for ,A190A2-A02-H,A190A2-A02-H-S1,1206-03,Rev.04
44-D008021
Backlight Unit
32-D008152
FFC,0.5x36x117xD(3.5/3.5/5/5),36 Pins
Olympic,20.1",Accessory BOM,D-sub+DVI+Audio,USA 3 pin,Black,
Olympic,20.1",Accessory BOM,D-sub+DVI+Audio,China 3 pin,Black,
PK1PAA1000(A14)
Olympic,20.1",Accessory BOM,D-sub+DVI+Audio,European / Korea 2
PK1PAC0000(C14)
pin,Silver Black,w/ DVI Cable
PK1PAE0000(E14)
Olympic,20.1",Accessory BOM,D-sub+DVI+Audio,None,Black,Two
PK1PAK0000(K14)
Power code of UK & EU for VSC
PK1PAW0000(W14)
Olympic,20.1" TN,Accessory BOM,D-sub+DVI+Audio,Taiwan 3
pin,Black,Power Built-in;RoHS
Power Code,UL,SVT#18/3C,75°C,LP-30B+LS-13,L=1830+/32E1818015
50mm,Black,Linetek,18AWG, No Bag
Power Cord,CCC,300/500V,0.75mm2,3C,PC-323+COC-01,L=1830+/32E1818013
50mm,Black,Linetek,18AWG,No Bag
32E1818018
Power Cord,SP-023+IS-14,Black,CEE,1800 mm,Green I
Power Code,CEE,H05W-F,0.75mm2,3C,LP-33+LS-60,L=1830+/32E1818016
50mm,Black,Linetek,18AWG,No Bag
Power Cord,BSI,H05VV-F,0.75mm2,3C,LP-60L+LS-60,L=1830+/32E1818060
50mm,Black,18AWG,PSB Mark,Linetek,No Bag
32-D001922
Power Cord,VCTF 3G 0.75mm^2 CNS CT-08,Black,BSMI,1800 mm
32F2818004
Audio Cable,A150X2,18AWG,180cm,Black,JCE,Green I
32F3018003
Accessory Cable,D-Sub,BLACK
32F0000004
Accessory Cable,DVI,Black
32F2818011
Accessory Cable,Audio,Black
PK1PI14100(A14) Olympic,20.1" ,ID BOM,D-sub+DVI+Audio,USA,Black,For VSC,
PK1PI14102(C14) Olympic,20.1" ,ID BOM,D-sub+DVI+Audio,China,Black,For VSC,
PK1PI14101(E14) Olympic,20.1" ,ID BOM,D-sub+DVI+Audio,European,Black,For VSC,
PK1PI14103(K14) Olympic,20.1" ,ID BOM,D-sub+DVI+Audio,UK,Black,For VSC,
PK1PI14104(W14) Olympic,20.1" ,ID BOM,D-sub+DVI+Audio,TWN,Black,For VSC,
42A9930014
Screw,M3*P0.5*6
41-D007449
Support Plate,A201P1-H14
40-D007460
Bezel Assy,A201P1-H14
40-D007468
Rear Assy,A201P1-H14
40-D007467
Cover Hinge Assy,A201P1-H14,Black
32-D007466
FFC,862P051787A/CFC2108,6 Pins
32-D007464
FFC,862P051786A/CFC2109,15 Pins
35-D007990
PCBA for ,A201P1-P01-H,A201P1-P01-H-K2,1101-01,Rev.01
35-D007988
PCBA for ,A201P1-P01-H,A201P1-P01-H-K1,1101-01,Rev.01
42A9930017
SCREW,M3,P=1.27 mm,L=8 mm
40-D007465
Stand Assy,A201P1-H14
77-D001323
Customer Label for ,A170E1-H0G,15 mmx15 mm
77-D007646
Safety Label for ,A201P1-H04,160 mmx30 mm
77-D007647
SN Label for ,A201P1-H04,50 mmx25 mm
77-D007648
SN Label for ,A201P1-H04,50 mmx25 mm
73-D007951
Panel Protector Film,A201P1-H14
7841595111
Corner Protector,paper,50 mmx50 mmx1850 mm
7841996911
Separator,A190E2-H04,1200 mmx1050 mmx11 mm
7741999141
Label,Pallet Barcode Label
7345511002
Tape,Security Tape,OPP,L900xW50x0.045mm
7841919941
Bag,700 mmx500 mmx0.13 mm
77-D000114
Customer Label,A170E1-H0G
77-D000118
Customer Label,A170E1-H0G
78-D000275
Warranty Card,A170E1-H0G
78-D003113
Pallet,A190E3-H02
40-D007461
Seat Assy,A201P1-H14,Black
78-D007563
Cushion,A201P1-H14,EPS,White
78-D007568
Cushion,A201P1-H14,EPS,White,495 mmx150 mmx114 mm
79-D007569
Shipping Package Information for ,A201P1-H14
77-D007645
Carton Label for ,A201P1-H04,76.2 mmx76.2 mm
76-D007999
MENU for A201P1-H04
76-D008000
MENU for A201P1-H04
78-D007998
Carton,A201P1-H04,490 mmx160 mmx510 mm
77-D008329
Carton Label for ,A201P1-H04,20 mmx20 mm
ViewSonic Corporation
Common
Common
Common
Common
Common
Common
Common
Common
Q'ty
1
4
0.00332
1
0.0044
10
7344191016
7344191004,
7344191011
35-D007109
Common
Common
Common
Common
27-D004263
0.0044
1
0.5
1
15
4
1
1
1
1
1
1
2
1
A14
32E1818019
C14
E14
32E1818021
32E1818016
K14
32E1818018
K14
W14
C14,E14,W14
Common
Common
A14,K14
32E1818020
32-D002330
32F2818011
32-D002132
32F2818004
1
1
1
1
1
1
1
1
1
1
1
Common
Common
Common
Common
Common
Common
Common
Common
Common
Common
Common
C14
Common
C14
Common
Common
Common
Common
Common
Common
Common
C14
C14
C14
Common
Common
Common
Common
Common
Common
A14
C14,E14,K14,W14
Common
Common
Confidential - Do Not Copy
56
Universal
number#
4
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
0.08
0.02
0.02
0.3
1
1
1
1
0.02
1
1
1
1
1
1
1
1
1
VG2021m-1
8. Exploded Diagram and Exploded Parts List
ViewSonic Corporation
Confidential - Do Not Copy
57
VG2021m-1
EXPLODED PARTS LIST (VG2021m-1)
ViewSonic Model Number: VS11234
Rev: 1a
Serial No. Prefix: Q6U
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
ViewSonic P/N
C-00005683
N/A
C-00005671
C-00005672
C-00005674
C-00005684
N/A
CB-00005676
CB-00005675
B-00005703
B-00005704
HW-00000557
HW-00005679
HW-00000555
Ref. P/N
40-D007460
PK1PFH0Q02
40-D007468
40-D007467
40-D007461
40-D007465
41-D007449
32-D007464
32-D007466
35-D007988
35-D007990
42A9930017
42A9930008
42A9930014
Description
BEZEL ASSY
ISM
REAR ASSY
COVER HINGE ASSY
SEAT ASSY
STAND ASSY
COVER HINGE ASSY
FFC (AD → POWER PCBA)
FFC (POWER PCBA → OSD PCBA)
POWER PCBA
OSD PCBA
SCREW D3*8
SCREW M3*4
SCREW M3*6
ViewSonic Corporation
Confidential - Do Not Copy
58
Q'ty
1
1
1
1
1
1
1
1
1
1
1
2
2
4
VG2021m-1
PACKING PART LIST ( VG2021m-1 )
ViewSonic Model Number: VS11234
Rev: 1a
Item
1
2
3
4
5
6
7
8
9
10
11
12
ViewSonic Corporation
Confidential - Do Not Copy
59
VG2021m-1
ViewSonic P/N
N/A
P-00002374
P-00005681
P-00005682
N/A
C-00005674
N/A
N/A
CB-00005678
CB-00004287
CB-00002083
N/A
Ref. P/N
VG2021m-1
7841919941
78-D007568
78-D007563
Different region (refer to BOM)
40-D007461
Different region (refer to BOM)
Different region (refer to BOM)
32F2818011
32F3018003
32F0000004
Different region (refer to BOM)
Location
LCD Monitior
PE Foam Bag
EPS Foam (Right)
EPS Foam(Left)
Carton
Seat Assy
Menu-paper
Menu-CD
Audio Cable
Monitor Cable(D-sub)
Monitor Cable(DVI-D)
Power Cord
Q'ty
1
1
1
1
1
1
1
1
1
1
1
1
9. Block Diagram
Speaker
OSD Key Pad / Audio Out
3.3V
5V
DVI-D
Digital Video
Main Board
LCD Module
12V
D-sub
Analog Video
Signal
LDO
DC-5V
AC Power
DC-12V
LIPS
Backlight
Audio In
ViewSonic Corporation
Confidential - Do Not Copy
60
VG2021m-1
10. Schematic Diagrams
B3
B6
DSUB_DET
SOG
DDCA_DAT
DDCA_CLK
RIN
GNDR
GIN
GNDG
BIN
GNDB
HSYNC
VSYNC
DSUB_DET
SOG
VGADDCA_DAT
V5A
VGA_5V
VGA_5V
V5A_ESD
V5A_ESD
DDCA_CLK
RIN
GNDR
GIN
GNDG
BIN
GNDB
HSYNC
VSYNC
BR2N
BR2P
BR1N
BR1P
BR0N
BR0P
DSUB_DET
SOG
DDCA_DAT
DDCA_CLK
RIN
GNDR
GIN
GNDG
BIN
GNDB
HSYNC
VSYNC
BG2N
BG2P
BG1N
BG1P
BG0N
BG0P
B4
DDCD_CLK
DDCD_DAT
R+
RG+
GB+
BCLK+
CLK-
V5A_ESD
DDCD_CLK
DDCD_DAT
V5A
R+
RDVI
G+
GDVI_5V
B+
BCLK+
CLK-
DVI_5V
B1
BB2N
BB2P
BB1N
BB1P
BB0N
BB0P
DDCD_CLK
DDCD_DAT
R+
RG+
GB+
BCLK+
CLK-
FR2N
FR2P
FR1N
FR1P
FR0N
FR0P
FG2N
FG2P
FG1N
FG1P
FG0N
FG0P
OSD
LED_OR
LED_GL
TURBO
MENU
LEFT
RIGHT
AUTO
POWER
LED_OR
LED_GL
TURBO
MENU
LEFT
RIGHT
AUTO
POWER
V33C
AUDIORAUDIOR+
AUDIOLAUDIOL+
LED_OR
LED_GL
TURBO
MENU
LEFT
RIGHT
AUTO
POWER
AUDIO_ON
INV_ON/OFF
DCDC_ON/OFF
PANEL_ON/OFF
VCM_PWM
VOL_ADJ
INV_ADJ
AUD_DET
AUDIORAUDIOR+
AUDIOLAUDIOL+
AUDIO_ON
INV_ON/OFF
DCDC_ON/OFF
PANEL_ON/OFF
VCM_PWM
VOL_ADJ
INV_ADJ
AUD_DET
DVI_5V
SCALER
FB2N
FB2P
FB1N
FB1P
FB0N
FB0P
FCKN
FCKP
FSTH
BCKN
BCKP
BSTH
STB
POL
CPV
STV
OE
B8
BR2N
BR2P
BR1N
BR1P
BR0N
BR0P
PANEL_INTERFACE
BR2N
BR2P
BR1N
BR1P
BR0N
BR0P
BG2N
BG2P
BG1N
BG1P
BG0N
BG0P
BG2N
BG2P
BG1N
BG1P
BG0N
BG0P
BB2N
BB2P
BB1N
BB1P
BB0N
BB0P
BB2N
BB2P
BB1N
BB1P
BB0N
BB0P
FR2N
FR2P
FR1N
FR1P
FR0N
FR0P
FR2N
FR2P
FR1N
FR1P
FR0N
FR0P
FG2N
FG2P
FG1N
FG1P
FG0N
FG0P
FG2N
FG2P
FG1N
FG1P
FG0N
FG0P
FB2N
FB2P
FB1N
FB1P
FB0N
FB0P
FB2N
FB2P
FB1N
FB1P
FB0N
FB0P
FCKN
FCKP
FSTH
FCKN
FCKP
FSTH
BCKN
BCKP
BSTH
BCKN
BCKP
BSTH
STB
POL
STB
POL
CPV
STV
OE
CPV
STV
OE
B5
VCTRL
B2
INVERTER I/F
V5A
AUDIOL+
AUDIOL-
VOL_ADJ
Vref
Vref
VGA_5V
AUDIOR-
V12A
V18C
V33C
Vref
V5A
GVOFF
GVOFF
GVOFF
VCM_PWM
PANEL_ON/OFF
DCDC_ON/OFF
V12A
VOL_ADJ
POWER
AUDIO_ON
LED_GL
V18C
AUD_DET
V33C
AUD_DET
V12A
V5A
DVI_5V
AUDIOR+
VCTRL
V33P
V33P
V33P
V5A
VCM_PWM
PANEL_ON/OFF
DCDC_ON/OFF
V12A
V33P
V5A
V33C
V18C
V5A
V33C
V12A
INV_ON/OFF
INV_ADJ
V12A
INV_ON/OFF
INV_ADJ
ViewSonic Corporation
Model
Title
Date
Confidential - Do Not Copy
ViewSonic Corporation
61
VG2021m-1
Rev:
VCC33
VDPP
L10
VDDC
70
71
72
73
R116
0603/10K/5%
C94
0603/22p/50V/N
Y1
14.31818MHz
GND
C93
0603/22p/50V/N
RST
32
XIN
33
XOUT
12
97
117
68
BG0N
BG0P
BG1N
BG1P
BG2N
BG2P
118
119
120
121
122
123
124
125
126
127
128
1
FCKP
FCKN
BCKP
BCKN
ESP
OSP
GPO0
GPO1
GPO2
GPO3
GPO4
GPO5
GPO6
80
81
88
87
86
85
84
83
82
BSTH
FSTH
GVOFF
STB
STV
CPV
GPO51
OE
GPIO_P22
GPIO_P23
GPIO_P03
75
74
26
GPIO_P16/PWM2
GPIO_P15/PWM0
PWM2/GPIO_P24
GPIO_P27/PWM1
35
69
78
79
GPIO_P12
PWM1/GPIO_P25
20
21
RSTN
GPIO_P00/SAR1
GPIO_P01/SAR2
GPIO_P02/SAR3
22
23
24
25
GPIO_P06
GPIO_P07
PWM0/GPIO_P26
GPIO_P13
GPIO_P14
27
28
29
30
31
CLKAP/LVB3P/LHSYNC
CLKAN/LVB3M/LVSYNC
CLKBP/LVBCKP/LCK_ODD
CLKBN/LVBCKM/LDE
NC/LVB2P/NC
NC/LVB2M/NC
BB1P/LVB1P/BB2
BB1N/LVB1M/BB3
BB2P/LVB0P/BB4
BB2N/LVB0M/BB5
BB3P/NC/BB6
BB3N/NC/BB7
SDO
SCZ
SCK
SDI
Pm25LV512
19
2
3
5
6
7
8
GND
VCC33
R0603/OPEN
R0603/OPEN
102
104
MODE[0]
MODE[1]
R114
0603/10K/5%
R115
0603/10K/5%
R118
R119
GND
77
76
1
POL
R103
R104
VCM_PWM
PANEL_ON/OFF
INV_ON/OFF
INV_ADJ
SAR1 R110
SAR2 R117
R121
13
38
41
47
96
116
TP
C75
0603/100n/25V/7
Close to respective power Pins
VPLL
VPLL1
1
2
VDDC
TP
VCC18
C76
1206/10u/16V/X/PbF
Frame inversion : GPO5
不接 , GPO6 接 POL ( 原來
GPO5 接 GVOFF), GPO0 接
GVOFF (原接GVON)
0603/100R/5%
GND
C84
1206/4.7u/16V/Y
1
2
1
C78
1206/10u/16V/X/PbF
GND
GND
R120
GND
TP
Close to respective power Pins
V5A
DVI 漏電(R,G,B ) 會干擾 5V偵測,所以改成12v
DVI
0603/10K/5%
0603/0R/5%/open
R214
DSUB
GND
TURBO
U7
AT24C16AN-10SU-2.7/RoHS
8 VCC
A0 1
7
WP
A1
2
6
SCL
A2
3
5
SDA
GND
4
R102
1
0603/4.7K/0.1%/RoHS
0603/0R/5%/open
R213
DCDC_ON/OFF
Q7
MMBT3904-F
AUTO
0.47V
LEFT
1.77V
MENU
1.24V
TURBO
RIGHT
+LEFT
+POWER
0805/10u/6.3V/5/open
GND
SAR1
SAR11
R128
0603/23.2K/1%/OPEN
0805/10u/6.3V/5/open
GND
SAR2
LEFT
SAR21
R200
0603/10M/5%/RoHS/OPEN
0.47V
SR1(1.77) SR2(0.93)
R127
0603/20K/1%/OPEN
GND
R67
0603/12.1K/1%/OPEN
MENU
DSUB_DET
5
R137
0603/20K/1%/OPEN
R138
0603/23.2K/1%/OPEN
R201
0603/10M/5%/RoHS/OPEN
R134
TURBO
0603/3.3K/1%/OPEN
POWER_ON-OFF
會讓軟體erased,所以外加 Write Protect
電路
C70
0603/10n/25V/7/RoHS
NC
CD
VSS
3
VDD
2
OUT
1
GND
Vref
VCC33
RN5VD40AA/RoHS
R212
0603/2.7K/1%
RIGHT
R139
POWER
0603/12.1K/1%/OPEN
R140
AUTO
0603/3.3K/1%/OPEN
GND
DCDC_ON/OFF
C89
0603/100n/25V/7
U5
4
C150
1
1.24V
GND
TP
POWER
DVI_5V
VCC33
VCC33
C152
1
1.77V
12v
C88 0603/100n/25V/7
C81
0603/100n/25V/7
VCC33
TP
RIGHT
C87
0603/100n/25V/7
VCC33
R1000603/100R/5%
R101 0603/100R/5%
VOLTAGE
C86
0603/100n/25V/7
C79
0603/100n/25V/7
V12A
V5A
C85
0603/100n/25V/7
TP
Close to respective power Pins
AVDD1
GND
PIN
VDDC1
1
2
AVDD
L14
MENU
LEFT
RIGHT
LED_GL
LED_OR
VOL_ADJ
1
V18C
C77
0603/100n/25V/7
L17
Close to respective power Pins
VCC33
AUD_DET
AUTO
POWER
GND
0603/100R/5%
0603/100R/5%
0603/100R/5%
LED_GL
LED_OR
R105
1
L13
1
BSTH
VCC33 VCC33
FSTH
GVOFF
STB
STV
CPV
OE
0603/100R/5%
0603/100R/5%
VMPLL1
HCB2012KF-420T40
2
GND
BR0N
BR0P
BR1N
BR1P
BR2N
BR2P
POL
AUDIO_ON
Close to respective power Pins
C74
1206/10u/16V/X/PbF
FCKP
FCKN
BCKP
BCKN
GND
need to modify, the SAR is
6 bits and the max voltage
is 1.8V
L12
1
BG0N
BG0P
BG1N
BG1P
BG2N
BG2P
TP
C67
0603/100n/25V/7
VMPLL
BB0N
BB0P
BB1N
BB1P
BB2N
BB2P
BR0N
BR0P
BR1N
BR1P
BR2N
BR2P
C66
0603/100n/25V/7
GND
FR0N
FR0P
FR1N
FR1P
FR2N
FR2P
R106
0603/10K/5%
R107
0603/10K/5%
GND
GND
GND
GND
GND
GND
DDCROM_SCL
DDCROM_SDA
FG0N
FG0P
FG1N
FG1P
FG2N
FG2P
TP
TP
R109
0603/10K/5%
2
1
6
5
GB1P/NC/GB2
GB1N/NC/GB3
GB2P/NC/GB4
GB2N/NC/GB5
GB3P/NC/GB6
GB3N/NC/GB7
C60
0603/100n/25V/7
3
SDO
CE#
SCK
SDI
BB0N
BB0P
BB1N
BB1P
BB2N
BB2P
C59
0603/100n/25V/7
2
GND
VDDC
VDDC
VDDC
VDD_OTP
60
TSUM57AK
VDD
HOLD#
WP#
VSS
RB1P/NC/RB2
RB1N/NC/RB3
RB2P/NC/RB4
RB2N/NC/RB5
RB3P/NC/RB6
RB3N/NC/RB7
9
10
15
16
17
18
1
R108
0603/10K/5%
C80
1206/10u/16V/X/PbF
8
7
3
4
FR0N
FR0P
FR1N
FR1P
FR2N
FR2P
C58
0603/100n/25V/7
VDVI1
2
C65
1206/10u/16V/X/PbF
R112
WP
WP
0603/100n/25V/7
14
67
95
103
115
REFM
U2
C90
89
90
91
92
93
94
VDVI
L11
1
0603/10K/5%/OPEN
61
BA1P/NC/BA2
BA1N/NC/BA3
BA2P/NC/BA4
BA2N/NC/BA5
BA3P/NC/BA6
BA3N/NC/BA7
FB0N
FB0P
FB1N
FB1P
FB2N
FB2P
R210
REFP
98
99
100
101
105
106
FG0N
FG0P
FG1N
FG1P
FG2N
FG2P
C57
0603/100n/25V/7
Close to respective power Pins
0603/30K/5%
62
C91
0603/100n/25V/7
C56
0603/100n/25V/7
TP
GND
R113
0603/10K/5%
REXT
FB0N
FB0P
FB1N
FB1P
FB2N
FB2P
GA1P/NC/GA2
GA1N/NC/GA3
GA2P/NC/GA4
GA2N/NC/GA5
GA3P/LVA3P/GA6
GA3N/LVA3M/GA7
1
VCTRL
107
108
109
110
111
112
113
114
R209
0603/390R/1%
51
VDDP
VDDP
VDDP
VDDP
VDDP
52
AVDD_PLL
RX2P
RX2N
RX1P
RX1N
RX0P
RX0N
RXCKP
RXCKN
DDCD_SDA
DDCD_SCL
VCC33
V5A
AVDD_MPLL
AVDD_MPLL
39
40
42
43
45
46
48
49
36
37
AVDD_ADC
44
50
R+
RG+
GB+
BCLK+
CLKDDCD_DAT
DDCD_CLK
11
OPEN/R0603
R124
AVDD
RIN0P
RIN0N
GIN0P
GIN0N
SOGIN0
BIN0P
BIN0N
HSYNC0
VSYNC0
DDCA_SDA/RS232_Tx
DDCA_SCL/RS232_Rx
VCTRL
NC/LVACKP/NC
NC/LVACKM/NC
RA1P/LVA2P/RA2
RA1N/LVA2M/RA3
RA2P/LVA1P/RA4
RA2N/LVA1M/RA5
RA3P/LVA0P/RA6
RA3N/LVA0M/RA7
R122
0603/10K/5%/open
DDCD_DAT
DDCD_CLK
59
58
56
55
57
54
53
63
64
65
66
2
C55
1206/10u/16V/X/PbF
R111
0603/10K/5%
R+
RG+
GB+
BCLK+
CLK-
RIN
GNDR
GIN
GNDG
SOG
BIN
GNDB
HSYNC
VSYNC
DDCA_DAT
DDCA_CLK
C92
0603/100n/25V/7
GND
DSUB
DDCA_DAT
DDCA_CLK
GND
AVDD_DVI
AVDD_DVI
RIN
GNDR
GIN
GNDG
SOG
BIN
GNDB
HSYNC
VSYNC
4
34
0603/100n/25V/7
U1
VDPP1
1
V33C
0603/20K/1%/OPEN
R79
DVI
VDVI VMPLL VPLL AVDD VDPP
C68
GND
WP
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Model
Title
Date
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ViewSonic Corporation
62
VG2021m-1
Rev:
0603/1K/5%/RoHS V33C
R12
V33C
V33C
R9
0603/10K/5%/RoHS
3
R13
Q1
2N7002/RoHS
0603/1u/10V/Y/open
2
1
1
VIN_12V
1
0603/4.7K/5%/RoHS
R14
V5A1
TP
VIN_12V1
TP
LP2
FBMJ2125HS420/PbF
LP3
FBMJ2125HS420/PbF
LP4
FBMJ2125HS420/PbF
INV_ON/OFF1
INV_ADJ
0603/4.7K/5%/RoHS
3
C7
V5A
C8
0603/0.1u/25V/open
Q2
2N7002/RoHS
R10
1
2
GND
INV_ON/OFF 1
TP
INV_ADJ
INV_ON/OFF
1
GND
[GND_INV]
INV_ADJ1
0603/4.7K/5%/RoHS
TP
R11
0603/10K/5%/OPEN
V5A
LP1
GND
V5A
FBMJ2125HS420/PbF
CP3
CP1 1206/10u/16V/5/RoHS
UWT1E101MCL1GS/RoHS
1210/4.7u/25V/5/RoHS
GND
R181
0603/10K/5%/RoHS
VOL
MUTE
AUDIORAUDIOR+
AUDIOLAUDIOL+
CN4
Header2X8FR2.54
0603/0R/5%/RoHS/OPEN
AUD_Shutdown
R22
R182
MUTE
LP5
FBMJ2125HS420/PbF
2
1
3216FF/1206/3A/RoHS
TP0610K/PbF
V12A
3
FP1
2
VIN_12V
1
V12A
Q18
Q16
2N7002/RoHS
3
AUD_DET
1
AUD_DET
GND
LV470M025E055R
CP4
2
GND
GND_INV
V5A
0603/10K/5%/RoHS
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
1
LED_GL
2
CP2
+
CP5
CP6
1210/4.7u/25V/5/RoHS
1210/4.7u/25V/5/RoHS
C161
0603/100n/25V/Y/RoHS
R183
0603/1K/5%/RoHS
GND
GND
GND
GND
AUD_Shutdown
V5A
1
C4
2
R19
0603/1K/5%/RoHS
1
TP0610K/PbF
Q3
OPEN/0603
3
R18
Q5
1
2N7002/RoHS
2
VOL_ADJ
0603/10K/5%/RoHS
R17
OPEN/0603
VOL
C6
1206/10u/16V/5/RoHS
1
3
R15
0603/10K/5%/RoHS
VOL1
Q4
2N7002/RoHS
3
VOL_ADJ1
MUTE 和 AUD_Shutdown
分開:此電路要和R182一起上件但 R22 OPEN
V5A
Low: MUTE OFF
1
AUDIO_ON
2
V5A
C3
0603/100n/25V/Y/RoHS
C5
0603/100n/25V/7/RoHS
R16
0603/1K/5%/RoHS
GND
GND
GND
MUTE
R20
GND
0603/0R/5%/RoHS/OPEN
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Model
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Date
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ViewSonic Corporation
63
VG2021m-1
Rev:
V18C
D7
BAV70W/open
V18C
Q8
3
V33C1
B
GND
4
E
C
2
1
1
C160
0805/4.7u/16V/Y
H2907AS
R203
0603/2K/1%
2
TP
1
B240A-F
C42
C44
C43
0603/100n/25V/7/RoHS
1206/22u/16V/Y/RoHS
Vref
LM1117MPX-3.3/RoHS
2
4
V33C
VOUT
VOUT
1206/22u/16V/Y/RoHS
V18V1
D35
1N4148WS-F
V33C
(SCALER VCC)
GND
1
VIN
1
U4
3
GND
L18
V5A
FBMJ2125HS420/PbF
D9
1
2
TP
3
2
0603/0R/5%/open
DVI_5V
VGA_5V
1 0603/0R/5%/open
R1 R5
VCTRL
R202
0603/51R/1%
R204
C45
0603/100n/25V/7/RoHS
0603/100R/1%
Heat-Sink
GND
(POWER FOR SCALER)
L9
U6
FBMJ2125HS420/PbF
3
VIN
LM1117MPX-3.3/RoHS
2
4
V33P
VOUT
VOUT
V33P
(Panel VCC)
1
GND
V5A
1
TP
V33P1
C50
1206/22u/16V/Y/RoHS
C51
0603/100n/25V/7/RoHS
C52
1206/22u/16V/Y/RoHS
C53
0603/100n/25V/7/RoHS
GND
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Model
Title
Date
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ViewSonic Corporation
64
VG2021m-1
Rev:
水波紋:
靠IC
R35
DDCA_DAT
0603/0R/5%/OPEN
11
1
6
2
7
3
8
4
9
5
10
12
13
14
15
R78
R30
R29
0603/75R/1% 0603/75R/1% 0603/75R/1%
R21
0603/56R/1%
C9
0603/47n/16V/7/RoHS
R34
0603/56R/1%
C10
0603/47n/16V/7/RoHS
R23
0603/56R/1%
C11
0603/47n/16V/7/RoHS
R24
0603/470R/1%
C15
0603/1n/16V/7
RIN
GIN
BIN
SOG
CN7
89263-6762
R25
D1
1
R144
0603/0R/5%/OPEN
D2
D24
1
BAV99W/RoHS
1
D25
BAV99W/RoHS
C157
0603/100n/25V/X/RoHS
DDCA_CLK
L20
2
HSI
GND
2
C159
0603/100n/25V/X/RoHS
0603/0R/5%/RoHS
R57
R55
C128
0603/33p/50V/N/RoHS
0603/2.2K/5%/RoHS
1
0603/1K/1%/RoHS
HSYNC
C126
0603/33p/50V/N/RoHS/open
GND
0603/0R/5%/RoHS
D33
UDZSF-5.6B/PbF
GND
R129
1
0603/2.2K/5%/RoHS
GND
GND
R64
0603/100R/5%/RoHS
R131
0603/100R/5%/RoHS
R54
GND
0603/1K/1%/RoHS
R27
0603/100R/1%
C125
0603/47n/16V/7/RoHS
GNDR
GNDG
GNDB
VSYNC
水波紋: 參考 Mstar
電路增加 C100 ,C128
,然後將R57的阻值 0.68
k改為 1k,
R54的阻值0.1K改為1k,將
C126 ,C127 OPEN
Phase issue: 將 L20 為 120歐姆 的 bead
改成 0 歐姆的電阻
C127
0603/33p/50V/N/RoHS/open
C100
R66
2
VSI
0603/47n/16V/7/RoHS
V5A_ESD
C158
0603/100n/25V/X/RoHS
D32
UDZSF-5.6B/PbF
C124
GND
V5A_ESD
2
GND
0603/100R/1%
D5
BAV99W/RoHS
2
0603/10p/varistor/OPEN
0603/10p/varistor/OPEN
0603/47n/16V/7/RoHS
0603/100R/1%
3
3
3
GND
C123
R26
0603/220p/50V/N
GNDGND
GND
HSYNC1 TP
1
HSYNC
VSYNC1 TP
1
VSYNC
DDCA_CLK
DDCA_DAT
DSUB_DET
D6
C129
0603/100n/25V/X/RoHS
D30
BZT52-C5V6S/RoHS
3
0603220KV05T/RoHS
V5A
D31
BAV70W/RoHS
2
D29
0603220KV05T/RoHS
1
D10
0603220KV05T/RoHS
V5A
1
L8
R133
BK1608LL121/PbF 0603/10R/5%/RoHS
2VGA_5V
VGA_5V
1
2
3
4
GND
U15
R136
NC
VCC 8
VGA_5V
NC
VCLK 7
NC
SCL 6
GND
SDA 5
AT24C02-10TU-1.8/RoHS
0603/3.9K/5%/RoHS
R68
0603/10K/5%/RoHS
R135
0603/10K/5%/RoHS
C23
0603/100n/25V/7/RoHS
GND
R60
GND
0603/47K/5%/RoHS
GND
ViewSonic Corporation
Model
Title
Date
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ViewSonic Corporation
65
VG2021m-1
Rev:
V5A_ESD
CON1
DDCD_CLK
DDCD_DAT
R37
0603/0R/5%/RoHS
R38
0603/0R/5%/RoHS
2 L6
1
DVI_5V
3
0603/100n/25V/7 0603/100n/25V/7 0603/100n/25V/7 0603/100n/25V/7
D17
UDZSF-5.6B/RoHS/OPEN
GND
C27
GND
3
3
D4
BAV99W/RoHS BAV99W/RoHSBAV99W/RoHS
1
1
1
C34
BAV99W/RoHS
1
C35
2
C33
2
C32
2
2
C31
3
3
BAV99W/RoHS
1
2
2
C30
2
C29
BAV99W/RoHS
1
2
BAV99W/RoHS
1
GND
B+
0603/10R/5%/RoHS
BR42
0603/10R/5%/RoHS
G+
R43
0603/10R/5%/RoHS
GR44
0603/10R/5%/RoHS
R+
R45
0603/10R/5%/RoHS
RR46
0603/10R/5%/RoHS
CLK+
0603/10R/5%/RoHS
D20
D21
D22
D23
D3 R47
CLK-
1
2
3
3
3
C28
V5A_ESD
1206/10u/16V/5/RoHS
D19
GND
3
R41
2DS-0342-001
BAV99W/RoHS
1
AT24C02-10TU-1.8/RoHS
0603/10R/5%/RoHS
D18
2
2
C26
BAV70W
C25
0603/100n/25V/Y/RoHS
R50
R51
D15
U10
0603/100n/25V/Y/RoHS
0603/3.9K/5%/RoHS
0603/10K/5%/RoHS
UDZSF-5.6B/PbF
R48
1 NC
VCC 8
0603/10K/5%/RoHS
R49
0603/47K/5%/RoHS
2 NC
7
VCLK
3 NC
6
SCL
4 GND
SDA 5
UDZSF-5.6B/PbF
R40
D16
1
2
D14
UDZSF-5.6B/PbF
C162
C163
1
V5A
D13
0603/100p/50V/N
0603/100p/50V/N
L5
V5A 0603/0R/5%
DVI_5V
V5A
0603/10K/5%/RoHS
GND
DDCD_DAT
BK1608LL121/RoHS
R39
1
DAT0+
DAT0DAT1+
DAT1DAT2+
DAT2DAT3+
DAT3DAT4+
DAT4DAT5+
DAT5clk+
clk-
18
17
10
9
2
1
13
12
5
4
21
20
23
24
DDCD_CLK
DDCD_DAT
2
1/3shield
2/4shield
0/5shield
clk shield
11
3
19
22
DDCD_CLK
1
R
G
B
RGB GND
HSYNC
VSYNC
SYNC GND
DDC SCL
DDC SDA
+5V
HPD
25
26
27
29
28
8
15
6
7
14
16
V5A_ESD
0603/100n/25V/7 0603/100n/25V/7 0603/100n/25V/7 0603/100n/25V/7
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Model
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Date
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ViewSonic Corporation
66
VG2021m-1
Rev:
5
6
7
8
5
6
7
8
4
3
2
1
RP46
0603*4/10K/5%/RoHS
4
3
2
1
V33C
RP47
0603*4/10K/5%/RoHS
Bead Array LP8,LP9,LP11=>modified RoHs
MENU
LEFT
RIGHT
TURBO
AUTO
LED_O
LP6 1
2
3
4
LP7 1
2
3
4
LED_G
POWER
CN3
8 BK32164M121
7
6
5
8 BK32164M121
7
6
5
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
L1
AUDIOR-
1
2
MPZ1608S221/RoHS
AUDIOR+
CP7
CP8
0603*4/100n/25V/RoHS 0603*4/100n/25V/RoHS
V33C
5
6
7
8
R36
R62
0603/10K/5%/RoHS
0603/1K/5%/RoHS/OPEN
R7
5
6
7
8
V33C
4
3
2
1
4
3
2
1
L2
V33C
AUDIOL-
1
2
MPZ1608S221/RoHS
HEADER 10_2/RoHS
L3
1
2
MPZ1608S221/RoHS
GND
3
2
L4
1
TP0610K/PbF
Q12
Q13
AUDIOL+
1
1
2
MPZ1608S221/RoHS
LED_OR
2
3
2N7002/RoHS/OPEN
0603/0R/5%/RoHS
C2
0603/100n/25V/Y/RoHS/OPEN
R3
0603/249R/1%/RoHS
GND
GND
GND
LED_O
V33C
V33C
R2
0603/1K/5%/RoHS/OPEN
3
TP0610K/PbF
Q14
3
1
R8
Q15
2N7002/RoHS/OPEN
0603/0R/5%/RoHS
1
LED_GL
2
2
R63
0603/10K/5%/RoHS
R4
0603/249R/1%/RoHS
LED_G
C1
0603/100n/25V/Y/RoHS/OPEN
GND
GND
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Model
Title
Date
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ViewSonic Corporation
67
VG2021m-1
Rev:
VCC1
VCC
1
STV
1
BB2P
BB2N
BB1P
BB1N
BB0P
BB0N
STV1
BG2P
BG2N
BG1P
BG1N
BG0P
BG0N
CPV1
CPV
1
BCKP
BCKN
BR2P
BR2N
BR1P
BR1N
BR0P
BR0N
OE1
OE
1
STB
1
STB1
BSTH
V5A
POL1
POL
GVOFF
VCM_PWM
DCDC_ON/OFF
PANEL_ON/OFF
GND
V5A
1
BSTH
GVOFF
VCM_PWM
DCDC_ON/OFF
PANEL_ON/OFF
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CN1
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CN2
IL-FHR-F36S-HF/RoHS
C119
1206/22u/16V/Y/RoHS
PANEL_ON/OFF1
PANEL_ON/OFF
1
FSTH
FB2P
FB2N
FB1P
FB1N
FB0P
FB0N
C120
0603/100n/25V/7/RoHS
V12A
GND
DCDC_ON/OFF1
DCDC_ON/OFF
V12A
1
C121
1206/4.7u/35V/Y/E
FG2P
FG2N
FG1P
FG1N
FG0P
FG0N
C122
VCM_PWM1
VCM_PWM
1
FCKP
FCKN
0603/100n/25V/X/RoHS
GND
STB
POL
1
V33P
OE
CPV
STV
GND
FSTH1
FSTH
L7
1
FBMJ2125HS420/PbF
VCC
V33P
BSTH1
BSTH
STB
POL
FR2P
FR2N
FR1P
FR1N
FR0P
FR0N
GVOFF1
GVOFF
FSTH
C118
0603/100n/25V/X/RoHS
1
OE
CPV
STV
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
IL-FHR-F36S-HF/RoHS
GND
S Board
X Board
RA N/P -->
BA P/N
GA N/P -->
GA P/N
BA N/P -->
RA P/N
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Model
Title
Date
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ViewSonic Corporation
68
VG2021m-1
Rev:
11. PCB Layout Diagrams
ViewSonic Corporation
Confidential - Do Not Copy
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VG2021m-1
* 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. Troubleshooting Flow Chart
7. Recommended Spare Parts List
8. Exploded Diagram and Exploded Parts List
9. Block Diagrams
10. Schematic Diagrams
11.PCB Layout Diagrams
B. Are you satisfied with this Service Manual?
Item
Excellent
Good
Fair
Bad
1. Service Manual Content
2. Service Manual Layout
3. The form and listing
C. Do you have any other opinions or suggestions regarding this service manual?
Reader’s basic dada:
Name:
Title:
Company:
Add:
Tel:
Fax:
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
([email protected])
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VG2021m-1