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 ECR Number Description of Changes Editor
1a 11/23/2006 Initial Release Jamie Chang
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TABLE OF CONTENTS
1. Precautions and Safety Notices 1
2. Specification 3
3. Front Panel Function Control Description 9
4. Circuit Description 15
5. Adjusting Procedure 19
6. Trouble Shooting Flow Chart 35
7. Block Diagrams 38
8. Schematic Diagrams 39
9. PCB Layout Diagrams 48
10. Exploded Diagram And Spare Parts List 53
11. Recommended Spare Parts List 57
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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) Disconnect the power plug from AC outlet if the product is not used for a long period of
time.
(5) If smoke, abnormal noise, or strange odor is present, immediately switch the LCD display
off.
(6) Do not touch the LCD panel surface with sharp or hard objects.
(7) Do not place heavy objects on the LCD display, video cable, or power cord.
(8) Do not use abrasive cleaners, waxes or solvents for your cleaning.
(9) Do not operate the product under the following conditions:
- Extremely hot, cold or humid environment.
- Areas susceptible to excessive dust and dirt.
- Near any appliance generating a strong magnetic field.
- Place 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. Power Supply Requirements
The external AC power operating range shall be from 90 to 264Vac
5. LCD Module Handling Precautions
5.1. Handling Precautions
(1) Since front polarizer is easily damaged, pay attention not to scratch it.
(2) Be sure to turn off power supply when inserting or disconnecting from input connector.
(3) Wipe off water drop 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 insure human
earth when handling.
(7) Do not open nor modify the Module Assembly.
(8) Do not press the reflector sheet at the back of the module to any directions.
(9) In case if a Module has to be put back into the packing container slot after once it was
taken out from 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 nor
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 nor bend the TFT Module even momentary. At designing the
enclosure, it should be taken into consideration that no bending/twisting forces are
applied to the TFT Module from outside. Otherwise the TFT Module may be damaged.
(12) Cold cathode fluorescent lamp in LCD contains a small amount of mercury. Please
follow local ordinances or regulations for disposal.
(13) Small amount of materials having no flammability grade is used in the LCD module.
The LCD module should be supplied by power complied with requirements of Limited
Power Source (IEC60950 or UL1950), or be applied exemption.
(14) The LCD module is designed so that the CFL in it is supplied by Limited Current
Circuit (IEC60950 or UL1950). Do not connect the CFL in Hazardous Voltage Circuit.
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5.2. Handling and Placing Methods
Correct Methods: Incorrect Methods:
Only touch the metal frame of the LCD panel
or the front cover of the monitor. Do not touch
the surface of the polarizer.
Place the monitor on a clean and soft foam pad. Placing the monitor on foreign objects. That
Surface of the LCD panel is pressed by fingers
and that may cause “Mura”
could scratch the surface of the panel or cause
“Mura”
The panel is placed facedown on the lap. That
may cause “Mura”
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2. Specification
4-1 GENERAL specification
Test Resolution & Frequency 1680x1050 @ 60Hz
Test Image Size Full Size
Analog Input Connector DB-15 (Analog), refer the appendix A
Digital Input Connector DVI-D (Digital), refer the appendix B
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 1/2B
1. Video RGB (Analog)
Video Signals
Separate, Composite, and Sync on Green
2. TMDS (Digital)
Video Impedance 75 Ohms (Analog), 100 Ohms (Digital)
Maximum PC Video Signal 950 mV with no damage to monitor
Maximum Mac Video Signal 1250 mV with no damage to monitor
Sync Signals TTL
DDC 1/2B Compliant with Revision 1.3
Sync Compatibility Separate Sync, Composite Sync, SOG
Video Compatibility
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, 1152 x 864, 1152 x 870,
1280 x 720, 1280 x 960, 1280 x 1024 , 1400 x 1050 ,
Resolution Compatibility
1440 x 900 , 1600 x 1200, 1680 x 1050
* The image vertical size might not be full screen.
But the image vertical position should be at the center.
Exclusions Not compatible with interlaced video
4-3 POWER SUPPLY
Internal Power Supply Part Number: HJC- H0AU032001
INPUT VOLTAGE RANGE AC100~240 (WORLDWIDE)
Input Frequency Range 47 TO 63 HERTZ
Short Circuit Protection Output can be shorted without damage
Over Current Protection 5A TYPICAL AT 5 VDC ( Protect when short circuit )
Leakage Current 3.5mA (Max) at 264VAC / 50Hz
EFFICIENCY 80 % typical at 115VAC Full Load
75% minimum at 115VAC Full Load
Fuse Internal and not user replaceable
Power Dissipation < 48 Watts (typ)
Max Input AC Current 1.5Arms @ 90VAC , 0.75Arms@ 180VAC
INRUSH CURRENT (COLD START)
50A MAX./ 115V
90A MAX./ 230V
/ 60HZ (COLD START AT 25℃,FULL LOAD)
AC
/ 50HZ (COLD START AT 25℃,FULL LOAD)
AC
Shall start and function properly when under full load,
Power Supply Cold Start
with all combinations of input voltage, input frequency,
and operating temperature rms
Power Supply Transient Immunity Shall be able to withstand an ANSI/IEEE C62.41-1980
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6000V 200 ampere ring wave transient test with no
damage
Power Supply Line Surge Immunity
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
Power Supply Missing Cycle Immunity
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 define
Power Supply Acoustics
to be in compliance with ISO 7779 (DIN
EN27779:1991) Noise measurements of machines
acoustics. Power Switch noise shall not be considered
Separate 3-prong NEMA 5-15P type plug. Length =
US Type Power Cable
1.8m. Connects to display.
Color = Black
Schuko CEE7-7 type plug.
European Type Power Cable
Length = 1.8m, Connects to display.
Color = Black
Separate 3-prong type plug.
CCC Type Power Cable
Length = 1.8m. Connects to display.
Color = Black
Separate 2-prong NEMA 1-15P type plug. Length =
PSE Type Power Cable
1.8m. Connects to display.
Color = Black
Power Saving Operation(Method) VESA DPMS Signaling
On Mode- W/O Audio < 43W (Typ) / 48W (Max)
On Mode- W/Audio < 50W (Typ) / 55W (Max)
Power Consumption
Saving Mode < 2 W@230VAC 50HZ
Off Mode < 1 W @230VAC 50Hz
(DC Power Off; Meet to Energy Star Ver4.0 Tier2)
Recovery Time On Mode = N/A, Active Off < 3 sec
4-4 ELECTRICAL REQUIREMENT
Horizontal / Vertical Frequency
Horizontal Frequency 24 – 82 KHZ
Vertical Refresh Rate 50 – 85* HZ
Maximum Pixel Clock 150 MHz
Sync Polarity Independent of sync polarity.
Timing Table
Digital - TMDS
SOG
Remark
Item
Timing
Analog
Composite
Separated
1 640 x 350 @ 70 Hz, 31.5 KHz
2 640 x 400 @ 60 Hz, 31.5 KHz
3 640 x 400 @ 70 Hz, 31.5 KHz
4 640 x 480 @ 50 Hz, 24.7 KHz
5 640 x 480 @ 60 Hz, 31.5 KHz
For Analog sync, OSD will be
640x350/640x400/720x400 (primary= 720x400).
For Analog sync, switch 640x400@60Hz and
640x480@60Hz by [1]+[2] short cut key (primary
= 640x480@60Hz)
For Analog sync, OSD will be
640x350/640x400/720x400 (primary= 720x400).
For Analog sync, switch 640x400@60Hz and
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640x480@60Hz by [1]+[2] short cut key (primary
= 640x480@60Hz)
6 640 x 480 @ 67 Hz, 35 KHz
7 640 x 480 @ 72 Hz, 37.9 KHz
8 640 x 480 @ 75 Hz, 37.5 KHz
9 640 x 480 @ 85 Hz, 43.3 KHz
10 720 x 400 @ 70 Hz, 31.5 KHz
11 720 x 480 @ 60 Hz, 31.5 KHz
12 720 x 576 @ 50 Hz, 31.3 KHz
13 800 x 600 @ 56 Hz, 35.1 KHz
14 800 x 600 @ 60 Hz, 37.9 KHz
15 800 x 600 @ 72 Hz, 48.1 KHz
16 800 x 600 @ 75 Hz, 46.9 KHz
17 800 x 600 @ 85 Hz, 53.7 KHz
18 832 x 624 @ 75 Hz, 49.7 KHz
19 1024 x 768 @ 50 Hz, 39.6 KHz
20 1024 x 768 @ 60 Hz, 48.4 KHz
21 1024 x 768 @ 70 Hz, 56.5 KHz
22 1024 x 768 @ 75 Hz, 60 KHz
23 1024 x 768 @ 75 Hz, 60.2 KHz
24 1024 x 768 @ 85 Hz, 68.7 KHz
25 1152 x 864 @ 75 Hz, 67.5 KHz
26 1152 x 870 @ 75 Hz, 68.7 KHz
27 1280 x 768 @ 50 Hz, 39.6 KHz
28 1280 x 768 @ 60 Hz, 47.4 KHz
29 1280 x 768 @ 60 Hz, 47.8 KHz
30 1280 x 768 @ 75 Hz, 60.3 KHz
31 1280 x 960 @ 50 Hz, 49.4 KHz
32 1280 x 960 @ 60 Hz, 59.7 KHz
33 1280 x 960 @ 75 Hz, 75.2 KHz
34 1280 x 1024 @ 50 Hz, 52.7 KHz
35 1280 x 1024 @ 60 Hz, 64 KHz
36 1280 x 1024 @ 70 Hz, 74.6 KHz
37 1280 x 1024 @ 72 Hz, 76.8 KHz
38 1280 x 1024 @ 75 Hz, 80 KHz
39 1360 x 768 @ 60 Hz, 47.7 KHz
40 1400 x 1050 @ 50 Hz, 54.1 KHz
41 1400 x 1050 @ 60 Hz, 64.7 KHz
42 1400 x 1050 @ 60 Hz, 65.3 KHz
43 1400 x 1050 @ 75 Hz, 82.3 KHz
44 1440 x 900 @ 60 Hz, 55.5 KHz
45 1440 x 900 @ 60 Hz, 59.9 KHz
46 1440 x 900 @ 75 Hz, 75 KHz
47 1600 x 1200 @ 60 Hz, 75 KHz
48 1680 x 1050 @ 60 Hz, 65.3 KHz
*1. Tolerance ≧ ±2KHz. (if the range dose not cover other timing mode)
*2. Any timing not in the list, it should display as normal or show on “OUT OF RANGE” OSD message with
blanking.
*3. The image quality of 85Hz mode might be worse than 75Hz.
For Analog sync, OSD will be
640x350/640x400/720x400 (primary= 720x400).
For Analog sync, the information OSD shows
640x480
For Analog sync, the information OSD shows
800x600
For Analog sync, Switch 1024x768@50Hz and
1280x768@50Hz by [1]+[2] short cut key (primary
= 1024x768@50Hz)
For Analog sync, Switch 1024x768@50Hz and
1280x768@50Hz by [1]+[2] short cut key (primary
= 1024x768@50Hz)
For analog sync,, Switch 1400x1050@60Hz and
1680x1050@60Hz by [1]+[2] short cut key
(primary = 1680x1050@60Hz)
For analog sync,, Switch 1400x1050@60Hz and
1680x1050@60Hz by [1]+[2] short cut key
(primary = 1680x1050@60Hz)
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Main Menu Controls
1
Auto Image Adjust*
Contrast/Brightness*
2*4
Input Select
Analog, Digital
Audio Adjust
Volume*4, Mute*4
Color Adjust
SRGB, 9300K,7500K, 6500K(default), 5400,User Color [R, G, B]
Information [H Frequency, V Frequency, Resolution, Pixel Clock, Serial Number, Model
Number, [“www.ViewSonic.com” ]
Manual Image Adjust
Horizontal Size*1, H/V. Position*1, Fine Tune*1, Sharpness*
3 ,
Setup Menu
Language [English, French, German, Italian, Spanish, Finnish, Japanese, Simplified
*1 These functions are not available in Digital Mode
2
*
These functions are not available under SRGB Mode.
3
*
These functions are not available under Native Resolution Mode
4
*
These functions setting can be recalled to default value by pressing [▼]+[▲]
[Remark] Please refer to the detail in the Appendix C
Function descriptions
OSD Lock short cuts function for the buttons
The OSD lock will be activated by pressing the front panel control buttons "(1), & (▲)" for 10
seconds. If the user then tries to access the OSD by pressing any of the buttons "1", "▼", "▲",
"2" a message will appear on the screen for 3 seconds showing "OSD Locked". The OSD lock
will be deactivated by pressing the front panel control buttons "(1), & (▲)" again for 10
seconds.
Note1: When the OSD is locked will lock all functions, including “Volume” and “Mute”
Note 2: Status bar indicating OSD Lock or Unlock is in progress and when complete it will
indicate “OSD Locked”
Note 3: OSD Lock should not lock Power Button and Power Lock function
Power Lock short cuts function for the buttons
The power button lock will be activated by pressing the front panel control buttons "(1), & (▼)"
for 10 seconds. Locking the power button means that the user won't be able to turn off the
LCD while the power button is locked. If the user presses the power button while it is locked, a
message will appear on the screen for 3 seconds showing "Power Button Locked". It also
means that with the power button locked, the LCD would automatically turn back "On" when
power is restored after a power failure. If the power button is not in the locked mode, then
power should return to it's previous state when power is restored after a power failure. The
power button lock will be deactivated by pressing the front panel control buttons "(1), & (▼)"
again for 10 seconds.
Note 1: Status bar indicating Power Button lock or unlock is in progress and when complete it
will indicate “Power Button Locked”
Note 2: Power should only be lockable in the “On State”
Memory Recall Actions
Memory Recall action on the analog and digital mode as below
1. Set the factory defaults as shown in Section 4-8
2. Clean all the mode setting buffer
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3. 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. The OSD should disappear after 10 sec or by pushing button [1] or [2]
Resolution Notice function should be disabled when push button [2] under Resolution Notice
OSD
0-Touch™ Function Actions
1. Execute Auto Image Adjust when new mode detected, and save the settings to buffer for
further use
2. It should be reset by Memory Recall function
(Should not reset by power off, power unplug and others)
OSD Auto Save
The OSD shall save new settings when it is turned off by the user or when it times out. There
shall not be a separate save
Input Priority
This function is defined the auto detect priority when the display has several inputs. Please
refer to the detail flow chart as the appendix D
4-6 AUDIO INTERFACE (SPEAKER SPECIFICATION)
Line input signal 1.0 Vrms @1kHz
Line input impedance 10 kOhm
Maximum Amp power output (Watt)
2 W (RL=4Ω)
Amp -THD < 10 % THD @1kHz
Speaker Power rating(Ω/Watt) 1.5 W (typ.) ; 2W (max)
Signal to Noise Ratio 72 dB
Frequency response 100 – 20kHz
SPL.
Line input connection
85 ± 3 dB (at 0.5m)
3.5 mm stereo jacks
There should be no audible vibration
Vibration
resonance at volume=100% & treble /
bass in def. Value
Screen image
There should be no affect on the screen
image stability under any conditions
Connector PC99 requirement Audio in Lime Green pantone # 577C
Cable type / length 3.5mm stereo cable / 1.8m length
Speakers stay off when the rest of the
monitor is in power saving
Audio DPMS
Note: There is no guarantee <1W at
power consumption in Active Off mode,
when the Audio Cable is connected
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4-7 TFT LCD PANEL
1st Source Panel
Model number
M201EW02 V0
Type TN type with DVI interface
Active Size
20.1” WIDE ; 433.44 (H) x 270.90(V)
Pixel Arrangement RGB Vertical Stripe
Pixel Pitch 0.258 (H) x 0.258 (H) mm
GLASS TREATMENT Anti Glare (Hard coating 3H)
# OF BACKLIGHTS 6 CCFL ; Top & Bottom edge side
BACKLIGHT LIFE 50,000 Hours (Min)
Luminance (5-point) –
Condition:
300 cd/m2 (Typ after 30 minute warm up)
240 cd/m2 (Min after 30 minute warm up)
CT = 6500K, Contrast = Max,
Brightness = Max
Brightness Uniformity 80% (typ) ;75% (min)
Contrast Ratio 800:1 (typ), 600:1(min)
Color Depth 16.7 million colors (6 bits + HI-FRC)
Viewing Angle (Horizontal) @ CR>10
Typical: 160º
Minimum: TBD º
Viewing Angle (Vertical) @ CR>10
Typical: 160 º
Minimum: TBD º
Response Time
10%-90% @ Ta=25°C
Typical = 5ms (Tr = 3.6ms,Tf = 1.4ms)
Maxmum = 8ms (Tr = 5.7ms,Tf = 2.3ms)
Panel Defects Please see Panel Quality Specifications.
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3. Front Panel Function Control Description
Main Menu
with OSD controls
Front Control Panel
shown below in detail
Displays the control screen for
the highlighted control.
Also toggles between two
controls on some screens.
Also a shortcut to Auto Image
Adjust.
Displays the Main
Menu or exits the
control screen and
saves adjustments.
Standby Power On/Off
Power light
Blue = ON
Orange = Power Saving
Scrolls through menu
options and adjusts the
displayed control.
Also a shortcut to display
the Contrast adjustment
control screen.
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Do the following to adjust the display setting:
1. To display the Main Menu, press button [1].
NOTE: All OSD 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 to adjust, pressSorTto scroll up or down in the Main Menu.
3. After the desired 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 S or down T 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 1680 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 S and down T buttons.
ControlExplanation
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.
Input Select toggles between inputs if you have more than one computer
connected to the VX2035wm.
Audio Adjust
Vol ume 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).
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ControlExplanation
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).
7500K - 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.
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, pressSandT.
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.
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 1680 x 1050 @ 60Hz (recommended) means that the resolution
is 1680 x 1050 and the refresh rate is 60 Hertz.
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ControlExplanation
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:
Language Select allows the user to choose the language used in the menus and
control screens.
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ControlExplanation
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 1680 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
RTD2553V
LCD Monitor/MFM Controller
General
Embedded dual DDC with DDC1/2B/CI
Zoom scaling up and down
No external memory required.
Require only one crystal to generate all timing.
Programmable 3.3V/5V detection reset output.
Embedded crystal output to micro -controller.
3 channels 8 bits PWM output, and wide range selectable PWM frequency.
Analog RGB Input Interface
Integrated 8 -bit triple-channel 210/165 (optional) MHz ADC/PLL
Embedded programmable Schmitt trigger of HSYNC
Support Sync On Green (SOG) and various kinds of composite sync modes
On -chip high-performance hybrid PLLs
High resolution true 64 phase ADC PLL
Y/Pb/Pr support up to HDTV 1080i resolution
Support 2/1 Analog input (optional )
Digital Video Input Interface
Support 8 -bit video (ITU 656) format input
Support 16 -bit video (ITU 601) format input (optional)
Built -in YUV to RGB color space converter & de-interlace
DVI Compliant Digital Input Interface (optional)
Single l ink on-chip TMDS receiver
Support to 165Mhz with long cable
Adaptive algorithm for TMDS capability
Data enable only mode support
High -Bandwidth Digital Content Protection (HDCP 1.1) (optional only in H version)
Enhanced protection of HDCP se cret key (optional only in H version)
Auto Detection /Auto Calibration
Input format detection
Compatibility with standard VESA mode and support user-defined mode
Smart engine for Phase/Image position/Color calibration
Scaling
Fully programmable zoom ratios
Independent horizontal/vertical scaling
Advanced zoom algorithm provides high image quality
Sharpness/Smooth filter enhancement
Support non -linear scaling from 4:3 to 16:9 or 16:9 to 4:3
Vivid Color.
Dynamic Contrast Control (DC C)
Independent Color Management (ICM)
True 10 bits color processing engine
sRGB compliance
Advanced Dithering logic for 18 -bit panel color depth enhancement
Dynamic overshoot -smear canceling engine
Brightness and contrast control
Progr ammable 10-bit gamma support
Output Interface
Fully programmable display timing generator
Flexible data pair swapping for easier system design.
Programmable TCON function support
Multi -output interface (RSDS/LVDS/TTL)on single PCB
Spread -Spectrum DPLL to reduce EMI
Fixed Last Line output for perfect panel capability
Host Interface
Support MCU serial/parallel bus interface.
Support MCU dual edge data latch.
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Embedded OSD
Embedded 12K SRAM dynamically stores OSD command and fonts
Supp ort multi-color RAM font, 1, 2 and 4-bit per pixel
16 color palette with 24bit true color selection
Maximum 8 window with alpha -blending/gradient/dynamic fade-in/fade-out, bordering/shadow/3D
window type
Rotary 90,180,270 degree
Independent r ow shadowing/bordering
Programmable blinking effects for each character
OSD -made internal pattern generator for factory mode
Support 12x18~4x18 proportional font
Decompress OSD font
Power & Technology
3.3V power supplier
0.18um CMOS process, 12 8-pin QFP package
Embedded 3.3V to 1.8V voltage regulator
Analog Input
RTD integrates three ADC's (analog-to-digital converters), one for each color (red, green, and blue).
The sync-processor can deal with Separate-Sync, Composite-Sync, and Sync-On-Green. And the PLL
can generate very low jitter clock from HS to sample the analog signal to digital data. Input data is
latched within a capture window defined in registers refer to VS and HS leading edge. RTD also has 2
ADC input, we can switch these 2 input to choose which input we want to present on RTD embedded
LCD monitor.
RTD has a YPbPr input, we can connect DVD or some devices that has YPbPr input, YPbPr input can
be 1st or 2nd ADC pins.
TMDS Input
RTD integrates high-speed single link receiver function. It can operate up to 165 M at long cable. RTD
integrates an equalizer to enhance the cable loss weakness in long cable application and the advanced
tracking algorithm to have better performance in DVI RX.
Display Output Timing
The display output port sends single/double pixel data transfer and synchronized display timing to an
external device. The display port also support display panel with 6-bit per color, turn on the dithering
function to enhance color depth. In single pixel output mode, single pixel data (24-bit RGB) is
transferred to display port A on each active edge of DCLK, the rate of DCLK is also equal to display
pixel clock. The sync & enable signals are also sent to display port on each active edge of DCLK. In
double pixel output mode, double pixel data (48-bit RGB) is transferred to display port A & B on each
active edge of DCLK and the rate of DCLK is equal to half display pixel clock at this moment.
The sync & enable signals are also sent to display port on each active edge of DCLK.
Color Processing
Digital color R & G & B independent channel sRGB, contrast, brightness, gamma, dithering controls
are built in RTD. sRGB compliance function is provided with 9 multipliers. The contrast control is
performed a multiply value from 0 to 2 for each R/G/B channel. The brightness control is used to set an
offset value from –512 to +511 also for each R/G/B channel. Also RTD provided 10 bit gamma and a
high performance dithering function.
Build-In OSD
The detailed function-description of build-in OSD, please refer to the application note for RTD
embedded OSD.
Color LUT & Overlay Port
The following diagram presents the data flow among the gamma correction, dithering, overlay MUX,
OSD LUT and output format conversion blocks.
Auto-Adjustment
There are two main independent auto-adjustment functions supported by RTD, including
auto-position & auto-tracking. The operation procedure is as following;
Auto-Position
1. Define the RGB color noise margin: When the value of color channel R or G or B is greater than
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these noise margins, a valid pixel is found.
2. Define the threshold-pixel for vertical boundary search
3. Define the boundary window of searching for horizontal boundary search.
4. Start auto-function.
5. The result can be read from register.
Auto-Tracking
1. Setting the control-registers for the function (auto-phase, auto-balance) according to the
Control-Table.
2. Define the Threshold
3. Define the boundary window of searching for tracking window.
4. Start auto-function.
5. The result can be read from register
PLL System
Inside the RTD, there are four PLL systems for display clock and ADC sample clock (PLL1,
PLL2,M2PLL, DPLL ).
DCLK PLL
DPLL frequency = F_IN * DPM / DPN * Divider.
F_IN is input crystal frequency. DPM and DPN is in DPLL_M and DPLL_N.
DPLL_N, and it divide PLL frequency by 1, 2, 4 or 8.
According to parameter DPN, you must set LPF Mode in DPLL_WD. If LPF Mode is 1, the charge
pump current, Ich, must be DPM/17.6, while Ich must be DPM/1.67 if LPF Mode is 0. The charge
pump current Ich is in DPLL_CRNT.
Spread-Spectrum function is also build in DCLK to reduce EMI. You can control the SSP_I, SSP_W,
and FMDIV to fine-tune the EMI.
M2PLL is a PLL used to power-on reset, FIFO clock and Internal crystal clock. After power-on reset,
M2PLL output 10 times frequency of crystal clock. According to crystal frequency, set M2PLL to keep
FIFO clock frequency between 240MHz and 250MHz.
ADC Pixel Sampling PLL
The input pixel sampling PLL of RTD compose of PLL1 and PLL2 and DDS, the hybrid PLL system
inherently has a process-independent advantages comparing with pure analog PLL, DDS synthesizer is
in charge of the phase-frequency control, PLL1 provided a high frequency to get a larger bandwidth
letting the system fast locking, PLL2 finally synthesize the desired pixel sampling clock. The block
diagram shown below describes our high-performance tracking system.
Host Interface
Parallel/Serial Port Determination:
After RESET end, the status of pin 5 (TMDS_TST) can be sensed to determine the interface mode:
high for parallel port, low, low for serial port.
Host Interface Location Determination:
After the falling edge of RESET signal, the status of pin 3 can be sensed to determine the host interface
location: high for 112-115,118,119, and low for 52-57
Reset Output
We have the RESET_OUT function, and also reserve the RESET_IN function. By the bounding of
internal pins we can select two kinds of reset function. First of all is only reset-out, we can output the
reset signal to MCU, and the MCU can reset the RTD by firmware. The second is RTD output reset and
also reset itself. Notice that the reset output is positive polarity, besides, the reset output is open-drain
pin, please don't forget to attach a pull-up resistor (10K). The reset function for 3.3V operating
voltage detection is determined by 33VRST_REF voltage, No matter 5V or 3.3V MCU is been used,
divider the input voltage on 33VRST_REF to 2.2V for internal power sensing circuit detecting, the
divider resistor should be 10K level avoiding current leakage.
The Programmable Schmitt Trigger of HSYNC
To get better waveform of the input HSYNC, we have a programmable Schmitt Trigger circuit. For
different HSYNC amplitude and polarity, we can select different setting of the threshold voltage. The
Vt + and the Vt - can be selected by register CR97 We can select the old mode or the new mode. When
using the new mode we can directly determine the positive threshold voltage (1.4V, 1.6V… 2.6V), and
we can choose the hysterias from
the Vt + to determine the Vt - (0.6V, 0.8V, 1.0V, 1.2V). We also can finely tune the voltage by minus
0.1V. For application, we can select different threshold voltage by the polarity of the HSYNC. The
control register is CR97
Crystal Frequency Output
RTD can output crystal frequency or 1/2 crystal frequency to external MCU to save a crystal device.
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Once power state is on and reset is finished, we can set crystal frequency by firmware and output to pin
48 and pin 110 simultaneously, and then can turn off them in Pin Share Part. Pin 48 and PIN 110 is
configurable, detail setting is listed in Pin-Share part
RTD21208051 Embedded Micro-Controller for Monitor
Overview
This chip is the micro-processor of LCD monitor. It uses the design ware DW8051 of
Synopsys as the 8051 core of this chip and is compatible with other industry 8051 series. Also,
96Kbyte FLASH with 8 bit bus is embedded in this chip which is licensed from TSMC 0.18um
e-FLASH process. Here we use the package of PLCC44/LQFP48 if we would like to have a
discrete MCU controller or we make a multi-chip package with our LCD monitor controller to
form one chip package to save the cost of package and PCB material.
Features
Operating voltage range : 3.0V to 3.6V 8051 core, CPU operating frequency up to 50MHz 4 clocks per machine cycle 256-byte internal RAM 512-byte external data RAM, including 256-byte DDC RAM(128-byte x 2) and 256-byte
general purpose RAM
96K-byte flash memory, 64k for program and 32k for saving parameter Two DDC ports compliant with VESA DDC1/2B/2Bi/CI Three channels of PWM DAC with programable frequency from 100K to 100Hz Watchdog timer with programmable interval Three 16-bit counters/timers (T0, T1, and T2) One PLL to provide programmable operating frequency and clock output, 2 clock output ports One full-duplex serial port Six interrupt sources with 2 external interrupts
zFour channels of 6-bit ADC
zHardware In System Programming(ISP) capability, no boot code required
zBuilt-in Low voltage reset circuit
zEmbedded 1.8V regulator
zCode protection
zAvailable in 44-pin PLCC or 48-pin LQFP package
AUDIO STEREO CLASS-D AUDIO POWER AMPLIFIER
DESCRIPTION
The TPA2008D2 is a third generation 5-V class-D amplifier from Texas Instruments. Improvements to
previous generation devices include: dc volume control, lower supply current, lower noise loor ,higher
efficiency, smaller packaging, and fewer external components. Most notably, a new filter-free class-D
modulation technique allows the TPA2008D2 to directly drive the speakers, without needing a low-pass
output filter consisting of two inductors and three capacitors per channel. Eliminating this output filter
saves approximately 30% in system cost and 75% in PCB area.
The improvements and functionality make this device ideal for LCD projectors, LCD monitors,
powered speakers, and other applications that demand more battery life, reduced board space, and
functionality that surpasses currently available class-D devices.
A chip-level shutdown control limits total supply current to 1 µA, making the device ideal for
battery-powered applications. Protection circuitry in creases device reliability: thermal and short ircuit.
Under voltage shutdown saves battery power for more essential devices when battery voltage drops to
low leve.
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5. Adjustment Procedure
1. Function Test
1.1 Product
- 20” LCD Monitor
1.2 Test Equipment
- Color Video Signal & Pattern (or PC with WSXGA+ resolution and a sound card)
1.3 Test Condition
Before function test and alignment, each LCD Monitor should be run-in and warmed up for at least
30 minutes with the following conditions:
(a) In room temperature,
(b) With full-white screen, RGB, and Black
(c) With cycled display modes,
640*480 (H=43.27kHz, V=85Hz)
800*600 (H=53.7kHz, V=85Hz)
1024*768 (H=68.67kHz, V=85Hz)
1680*1050 (H=64.7kHz, V=60Hz)
1.4 Test Display Modes & Pattern
1.4.1 Compatible Modes
Analog Digital
1. 640 x 350 @ 70Hz, 31.5kHz
2. 640 x 400 @ 60Hz, 31.5kHz
3. 640 x 400 @ 70Hz, 31.5kHz
4. 640 x 480 @ 50Hz, 24.7kHz
5. 640 x 480 @ 60Hz, 31.5kHz
6. 640 x 480 @ 67Hz, 35.0kHz
7. 640 x 480 @ 72Hz, 37.9kHz
8. 640 x 480 @ 75Hz, 37.5kHz
9. 640 x 480 @ 85Hz, 43.27kHz
10. 720 x 400 @ 70Hz, 31.5kHz
11. 720 x 480 @ 60Hz, 31.5kHz
12. 720 x 576 @ 50Hz, 31.3kHz
13. 800 x 600 @ 50Hz, 24.7kHz
14. 800 x 600 @ 56Hz, 35.1kHz
15. 800 x 600 @ 60Hz, 37.9kHz
16. 800 x 600 @ 70Hz, 43 kHz
17. 800 x 600 @ 72Hz, 48.1kHz
18. 800 x 600 @ 75Hz, 46.9kHz
19. 800 x 600 @ 85Hz, 53.7kHz
20. 832 x 624 @ 75Hz, 49.7kHz
21. 1024 x 768 @ 50Hz, 39.6kHz
22. 1024 x 768 @ 60Hz, 48.4kHz
23. 1024 x 768 @ 70Hz, 56.5kHz
24. 1024 x 768 @ 72Hz, 58.1kHz
25. 1024 x 768 @ 75Hz, 60 kHz
26. 1024 x 768 @ 85Hz, 68.7 kHz
27. 1152 x 864 @ 75Hz, 67.5 kHz
28. 1152 x 870 @ 75Hz, 68.7 kHz
640 x 350 @ 70Hz, 31.5kHz
640 x 400 @ 60Hz, 31.5kHz
640 x 400 @ 70Hz, 31.5kHz
640 x 480 @ 50Hz, 24.7kHz
640 x 480 @ 60Hz, 31.5kHz
640 x 480 @ 67Hz, 35.0kHz
640 x 480 @ 72Hz, 37.9kHz
640 x 480 @ 75Hz, 37.5kHz
640 x 480 @ 85Hz, 43.27kHz
720 x 400 @ 70Hz, 31.5kHz
720 x 480 @ 60Hz, 31.5kHz
720 x 576 @ 50Hz, 31.3kHz
800 x 600 @ 50Hz, 24.7kHz
800 x 600 @ 56Hz, 35.1kHz
800 x 600 @ 60Hz, 37.9kHz
800 x 600 @ 70Hz, 43 kHz
800 x 600 @ 72Hz, 48.1kHz
800 x 600 @ 75Hz, 46.9kHz
800 x 600 @ 85Hz, 53.7kHz
832 x 624 @ 75Hz, 49.7kHz
1024 x 768 @ 50Hz, 39.6kHz
1024 x 768 @ 60Hz, 48.4kHz
1024 x 768 @ 70Hz, 56.5kHz
1024 x 768 @ 72Hz, 58.1kHz
1024 x 768 @ 75Hz, 60 kHz
1024 x 768 @ 85Hz, 68.7 kHz
1152 x 864 @ 75Hz, 67.5 kHz
1152 x 870 @ 75Hz, 68.7 kHz
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Analog Digital
29. 1280 x 720 @ 50Hz, 37.5 kHz
30. 1280 x 720 @ 60Hz, 45 kHz
31. 1280 x 768 @ 50Hz, 39.6 kHz
32. 1280 x 768 @ 60Hz, 47.8 kHz
33. 1280 x 768 @ 75Hz, 60.3 kHz
34. 1280 x 960 @ 50Hz, 49.4 kHz
35. 1280 x 960 @ 60Hz, 59.7 kHz
36. 1280 x 960 @ 75Hz, 75.2 kHz
37. 1280 x 1024 @ 60Hz, 64 kHz
38. 1280 x 1024 @ 75Hz, 80 kHz
39. 1400 x 1050 @ 60Hz, 65.3 kHz
40. 1400 x 900 @ 60Hz, 55.5 kHz
41. 1400 x 900 @ 75Hz, 75 kHz
42. 1600 x 1200 @ 60Hz, 75 kHz
43. 1680 x 1050 @ 60Hz, 64.7 kHz
1.4.2 Function Test Display Pattern
1280 x 720 @ 50Hz, 37.5 kHz
1280 x 720 @ 60Hz, 45 kHz
1280 x 768 @ 50Hz, 39.6 kHz
1280 x 768 @ 60Hz, 47.8 kHz
1280 x 768 @ 75Hz, 60.3 kHz
1280 x 960 @ 50Hz, 49.4 kHz
1280 x 960 @ 60Hz, 59.7 kHz
1280 x 960 @ 75Hz, 75.2 kHz
1280 x 1024 @ 60Hz, 64 kHz
1280 x 1024 @ 75Hz, 80 kHz
1400 x 1050 @ 60Hz, 65.3 kHz
1400 x 900 @ 60Hz, 55.5 kHz
1400 x 900 @ 75Hz, 75 kHz
1600 x 1200 @ 60Hz, 75 kHz
1680 x 1050 @ 60Hz, 64.7 kHz
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Fine Line Morie Pattern (Figure1) Gray Scale Pattern (Figure2)
Horizontal & Vertical Thickness Pattern (Figure 3) R. Color Pattern (Figure 4)
G. Color Pattern (Figure5) B. Color Pattern (Figure 6)
Full White Patter (Figure 7) Dark Screen Pattern (Figure 8)
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Black-White Pattern (Figure 9)
1.5 Function Test and Alignment Procedure
1.5.1 All Modes Reset
You should do “All Mode Reset” (Refer to Chapter III-3. Hot Keys for Function Controls)
first. This action will allow you to erase all end-user’s settings and restor e the factory
defaults.
1.5.2 Auto Image Adjust
Please select and enter “Auto Image Adjust” function on Main Menu to see if it is workable.
The “Auto Image Adjust” function is aimed to offer a better screen quality by built-in
ASIC. For optimum screen quality, the user has to adjust each function manually.
1.5.3 Firmware
Test Pattern: Burn In Mode (Refer to Chapter III-3. Hot Keys for Function Controls)
- Make sure the F/W is the latest version.
1.5.4 DDC
Test Pattern: EDID program
- Make sure it can pass test program.
1.5.5 Fine Tune and Sharpness
Test Signal: 1680*1050@60Hz
Test Pattern: Line Moire Pattern
- Check and see if the image has noise and focus performs well. Eliminate visual line bar.
- If not, readjust by the following steps:
(a) Select and enter “Fine Tune” function on “Manual Image Adjust” to adjust the image
to eliminate visual wavy noise.
(b) Then, select and enter “Sharpness” function to adjust the clarity and focus of the screen
image.
1.5.6 Boundary
Test Signal: 1680*1050@60Hz
Test Pattern: Horizontal & Vertical Line Thickness Pattern
- Check and see if the image boundary is within the screen frame.
- If not, readjust by the following steps:
(a) Select and enter “Manual Image Adjust” function on OSD Main Menu.
(b) Then, select and enter “Horizontal Size” or “Horizontal/Vertical Position” function to
adjust the video boundary to be full scanned and within screen frame.
1.5.7 White Balance
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Test Signal: 1680*1050@60Hz
Test Pattern: White and Black Pattern
1.5.8 R, G, B, Colors Contrast
Test Signal: 1680*1050@60Hz
Test Pattern: R, G, B, Color Intensities Pattern and 16 Gray Scale Pattern
- Check and see if each color is normal and distinguishable.
- If not, please return the unit to repair area.
1.5.9 Screen Uniformity and Flicker
Test Signal: 1680*1050@60Hz
Test Pattern: Full White Pattern
- Check and see if it is in normal condition.
1.5.10 Dead Pixel and Line
Test Signal: 1680*1050@60Hz
Test Pattern: Dark and White Screen Pattern
- Check and see if there are dead pixels on LCD panel with shadow gauge and filter film.
- The total numbers and distance of dead pixels should be compliant with the spec.
1.5.11 Mura
Test Pattern: White, RGB, Black, & Grey
Test Tool: 8% ND Filter
- Check if the Mura can pass 8% ND Filter.
1.5.12 Audio
Test Signal: Voice signal (optional, depend on model)
Test Pattern: liberty
- Make sure there is audio output.
- Make sure that audio function (volume 80%) is working without noise and resonance. ≦
- Make sure that the sound of right and left speakers are in balance.
- Normally when the primary mode 1280*1024@60Hz is well adjusted and compliant
with the specification, the secondary display modes will be great possible to be compliant
with the spec. But we still have to check with the general test pattern to make sure every
secondary is compliant with the specification.
1.5.14 All Modes Reset
After final QC step, we have to erase all saved changes again and restore the factory
defaults. You should do “All Mode Reset” again.
1.5.15 Power Off Monitor
Turn off the monitor by pressing “Power” button.
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2. Firmware Upgrade Procedure
When you receive the returned monitor, please check whether the firmware version is the
latest.If not, please do the following procedures to upgrade it to the latest version.
2.1 Equipment Needed
- VX2035WM1 Monitor
- Fixture for Firmware Upgrade
- VGA Cable
- PC (Personal Computer)
- LPT Cable
- Firmware Upgrade Program
- One additional monitor for checking the program execution
2.2 Setup Procedure
2.2.1 Connect P2 of Fixture with printer port of PC by LPT Cable.
2.2.2 Connect P1 of Fixture with Monitor by VGA Cable.
2.2.3 Connect Power Cord to Monitor.
2.2.4 Connect PC to the additional monitor.
I. ISP Download program procedure
1 Hardware Connect status:
2 Down load isp program
Step 1: Execute ISP.exe
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Step 2: Load file
Press the Load MCU File button to select the file will be download. (*.hex)
Step 3: Run
Pressing the Run Button to start download program. Press OK button to Enter ISP mode.
Step 4: Download program finish
Pressing the OK Button to finish the download program procedure.
Trouble shooting:
If you find the status like the follow picture. Please check the following item.
a. The connecting status between PC and ISP board.
b. The connecting status between ISP status and Monitor.
Turn off the power of monitor (AC plug off ) and disconnect the D-Sub connector . To connect the
D-Sub connector and then turn on the power of monitor.(AC plug on)
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3. DDC Key In Procedure
Note:
1. Every time after replacing the main board, you have to do the DDC key in.
2. If you find the DDC does not conform to the monitor, you have to do the DDC key in.
3.1 Equipment Needed
- VX2035WM1 Series Monitor
- DDC Card
- PC
- RS232 cable
- DVI-DVI Cable
- Barcode Reader
- VGA Cable
VX2035WM1 DDC Card PC
RS232 cable VGA cable BAR code reader
3.2 Setup Procedure
1.Connect VGA Card and DDC Card with RS-232 cable.
2.Barcode Reader connect with keyboard and PC keyboard port.
3.Connect RS-232 Cable and VX2035WM1 with VGA Cable.
4.(when key in DVI DDC information, use VGA transform to DVI port )
5.Connect Power Cord to VX2035WM1 Monitor.
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3.3 DDC Key In Procedure
1.Run DDC.exe
2.Choose model number and conform the Time then Press “ENTER” key.
3.When appear the PIC “ choose DDC Card”, Press ALT+2 .Enter DDC 2B test interface.
Choose DDC Card
4.Press F8 to choose corresponding model.DAT(VX2035WM1A.DAT press“ENTER” key)
VX2035WM1_A means the DDC under analog mode. VX2035WM1D means the DDC under digital
mode.
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5.Press F9 enter the download interface
6.Key in the serial number or use the barcode reader to scan the barcode of the monitor, and
press “ENTER” key.
7.The successful picture is as follows. ”Compare EDID :OK! Press any key to continue”.
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Packing For Shipping And Disassembly Procedure
Packing For Shipping
1. Packing Procedure
1.1 Paste protection film to protect the LCD TV. (Figure 1)
1.2 Put the LCD TV in the PE bag and seal the bag. (Figure 2~3)
Figure 2
1.3 Put the cushions on the LCD TV. (Figure 4)
1.4 Place the LCD TV into the carton and then Put the other cushions on the LCD TV,put all the
accessories into the carton. At last, close the carton and seal it with tape. (Figure 5)
Figure 1
Figure 3
1.Power Cord 2.VGA Cable 3.DVI Cable
4.EAR Cable 5.User’s Guide 6.Guarant Card
Figure 5 Figure 4
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Disassembly Procedure
1. Disassembly of Stand and Dust Cover from LCD TV.
1.1 Unscrew 6 screws that secure Stand Unit and detach Dust Cover from the LCD TV.
Dust Cover
Stand
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2. Disassembly of Rear Cover.
2.1 Unscrew 9 screws to remove Rear Cover.
Rear Cover
3. Disassembly of Main Board,Power Board,IR Board,Speaker,Front Cover
and Panel Unit.
3.1 Unscrew 13 screws to remove Shield Plate.
Shield Plate
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3.2. Unscrew 2 screws and disconnect the wires to remove Main Board.
3.3. Unscrew 5 screws and disconnect the wires to remove Power Board.
Main Board
Power Board
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3.4. Unscrew 4 screws to remove bracket fix.
3.5. Unscrew 8 screws to remove Front Cover.
Bracket fix
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3.6. Lay Panel Unit facedown and unscrew 4 screws on its right and left sides, to remove Panel Unit
and Panel Bracket.
Key Poard
Panel Unit Panel Bracket
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6. Troubleshooting Flow Chart
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6.1. NO POWER
6.2. MCU NO FUNCTION
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6.3. NO DISPLAY
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7. Block Diagram
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8. Schematic Diagrams
8.1. DC TO DC
P101
CON9
+5V
modify value 7/6
R101
R102 100
12
C101
100nF
1
2
3
4
5
6
7
8
9
L101200R 2A 0805
C103
100nF
DGND
DGND
1K
EC
DGND
5V_PANEL
5V_AMP 5
R103 0/NC
R104 NC/4.7K
B
Q101
NC/MMBT3904
C104
100uF/16V
DGND DGND
+
on_BACKLIGHT 4
200R 2A 0805
L102
C105
100nF
C0603
C102
NC/1uF
R106
100
+5V
+5V
5V3.3V
C107
100nF
I101 *ATC1084_3Y3_252
I
VIN
VOUT
GND
G
O
R105
C108
100nF
+5V
1K
DGND
R1070/NC
Q102
R108NC/1K
B
NC/MMBT3904
EC
3.3DVCC
3.3DVCC 3,4,5
I102 AP1117CY_1.8
I
VIN
VOUT
VOUT
GND
G
O
O1
adj_BACKLIGHT 4
VDD_CTRL4
C106
+
10uF/16V
C125
100nF
VDA_1V8
VDA_1V8 2,3
modify value 6/27
R11147K
B
R109
22K
EC
DGND
Q104
MMBT3904
R110220
DGND2,3,4,5
G
R112
10K
DS
Q103
AP2305
LCDVDD 3
5V_PANEL
DGNDDGNDDGND
MH1
M32-D80
234
5
1
678
DGND
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Above listed items are examples, supplier can expand the rows to add more necessary items.
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.
RECOMMENDED SPARE PARTS LIST (VX2035wm-1)
Description
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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 ExcellentGood 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. Block Diagrams
8. Schematic Diagrams
9.PCB Layout Diagrams
10. Exploded Diagram and Exploded Parts List
11. Recommended Spare Parts List
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?
Name:
Reader’s basic dada:
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
(marc.maupin@viewsonic.com)
ViewSonic CorporationConfidential - Do Not Copy VX2035wm-1
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