ViewSonic Vx2235wm 5 Service Manual

							
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1280x768@85Hz by [1]+[2] short cut key 
(primary = 1024x768@85Hz) 
35  1280 x 960  @  50  Hz,  49.4  KHz  　　 　　  
36  1280 x 960  @  60  Hz,  59.7  KHz  　　 　　  
37  1280 x 960  @  75  Hz,  75.2  KHz  　　 　　  
38  1280 x 1024  @  50  Hz,  52.7  KHz  　　 　　  
39  1280 x 1024  @  60  Hz,  64  KHz  　　 　　  
40  1280 x 1024  @  70  Hz,  74.6  KHz  　　 　　  
41  1280 x 1024  @  72  Hz,  76.8  KHz      　   
42  1280 x 1024  @  75  Hz,  80  KHz  　　 　　  
43  1360 x 768  @  60  Hz,  47.7  KHz  　　 　　  
44  1400 x 1050  @  50  Hz,  54.1  KHz  　　 　　  
45  1400 x 1050  @  60  Hz,  64.7  KHz  　　  　  
46  1400 x 1050  @  60  Hz,  65.3  KHz  　　  　 For analog sync,, Switch 1400x1050@60Hz and 
1680x1050@60Hz by [1]+[2] short cut key 
(primary = 1680x1050@60Hz) 
47  1400 x 1050  @  75  Hz,  82.3  KHz 
　　 　　  
48  1440 x 900  @  60  Hz,  55.5  KHz  　　 　　  
49  1440 x 900  @  60  Hz,  59.9  KHz  　　 　　  
50  1440 x 900  @  75  Hz,  75  KHz  　　 　　 
51  1600 x 1200  @  60  Hz,  75  KHz  　　 　　 
52  1680 x 1050  @  60  Hz,  65.3  KHz  　　 　　For analog sync,, Switch 1400x1050@60Hz and 
1680x1050@60Hz by [1]+[2] short cut key 
(primary = 1680x1050@60Hz) 
*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. 
 
Primary Presets 
1680x1050 @ 60Hz  
 
User Presets 
Number of User Presets (recognized timings) Ava ilable: 10 presets total in FIFO configuration 
 
Changing Modes 
●  Maximum Mode Change Blank Time for image stability : 3 seconds (Max), excluding “Auto Image Adjust” time       
●  Under DOS mode (6 40 x 350, 720 x 400 & 640 x 400),    it should r ecall factory setting when execute “Auto Image 
Adjust”  
●  The monitor needs to do “Auto Adjust” the  first time when a new mode is detected 
(See section “0-Touch™ Function Actions”)  
						

							
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2.6 FRONT PANEL CONTROLS AND INDICATORS 
Front Panel Hardware Controls 
 
Power Switch (Front Head)  Power Control, soft Power Switch. 
Power LED (Front Head)  Blue – ON 
Orange – Active Off 
Dark = Soft Power Switch OFF 
Front Panel Controls (Head) 
[ 1 ] [ 2 ] [
] [▼ ] [▲ ] 
  [ 1 ] BUTTON 1   
[ 2 ] Button 2 
[
] Power   
[ ▼ ] DOWN ARROW BUTTON 
[ ▲ ] UP ARROW BUTTON 
 
Note: Power Button, Button 1 and Button 2 must be one-shot logic 
operation. (i.e. there should be no cycling) 
Reaction Time  OSD must fully appear within 0.5s after pushing Button 1 
 
 
Short Cuts Function from the button(s)
 
[1] Main Menu 
[2]  Input toggle (Analog or Digital)   
[ ▼ ]  To immediately activate Brightness/Contrast menu. 
[▼ ] +[ ▲]  Recall both of Contrast and Brightness to default 
[1] + [2]  Toggle 720x400 and 640x400 mode when input 720x400 or 640x400 mode 
[1] + [ ▼] + [ ▲]  
(Keep pushing 3 sec)  White Balance. (Not shown on user’s guide) 
[1] + [
▼] Power Lock 
[1] + [ ▲] OSD Lock 
[▲ ]  Essential mode switch   
Standard ->Text -> Cinema -> Game  -> Portrait -> Scenery -> Vivid   
[2] + [▲]  Skin tone switch 
Nature -> Reddish -> yellowish 
[▼ ] +[ ▲] + [] Factory Mode 
Remark : All the short cuts function are only available while OSD off 
  
						

							
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Main Menu Controls 
 
Auto Image Adjust*
1  
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 , Opticolor [Standard, Text  , Cinema, Game, Portrait, 
Scenery, Vivid ]
, Opticolor Skin Tone[Nature, reddish ,yellowish] 
Setup Menu    Language [English, French, German, Italian, Spanish, Finnish, Japanese , Simplified Chinese, Traditional Chinese], 
Resolution Notice, OSD Position, OSD Timeout, OSD Background 
Memory Recall 
 
*
1 These functions are not available in Digital Mode 
*
2  These functions are not available under SRGB Mode, Opticolor On, and Opticolor Skin Tone On 
*
3  These functions are not available under Native Resolution Mode 
*
4  These functions setting can be recalle d 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 OS D lock will be deactivated by pressing the front pa nel 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 wont be able to turn off th e LCD while the power button is locked. If the user presses the 
power button while it is locked, a message will appear on the sc reen for 3 seconds showing Power Button Locked. It also 
means that with the power button locked, the LCD would automati cally turn back On when power is restored after a power  
						

							
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failure. If the power button is not in the locked mode, then powe r should return to its previous state when power is restored 
after a power failure. The power button lo ck 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 
3. Execute Auto Image Adjust 
 
Note: Memory Recall should have no effect for Langua ge, 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 
 
 
  
						

							
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2.7 AUDIO INTERFACE (SPEAKER SPECIFICATION) 
Line input signal  1.0 Vrms @1kHz 
Line input impedance  10 kOhm 
Maximum Amp power output (Watt)  2 W (RL=4
Ω) 
Amp -THD  < 10 % THD @1kHz 
Speaker Power rating( Ω/Watt)  4
Ω /2.5 W (TYP.)  ;  4 Ω/ 3 W (MAX)  
Signal to Noise Ratio  72 dB 
Frequency response  Fo – 20kHz  
SPL.  85 ± 3 dB (at 0.5m) 
FO 300 Hz  
Line input connection 3.5 mm stereo jacks 
Vibration There should be no audible 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 
Audio DPMS SPEAKERS STAY ON WHEN THE REST OF THE MONITOR IS IN 
POWER SAVING 
NOTE: THERE IS NO GUARANTEE 
						

							
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3. Front Panel Function Control Description 
 
Use the buttons on the front control panel to display and adjust the OSD controls which display 
on the screen. The OSD controls are explained at the top of the next page and are defined in 
“Main Menu Controls” on page 10.
Main Menu
with OSD controls
Front Control Panel
shown below in detail
Scrolls through menu 
options and adjusts the 
displayed control.
Also a shortcut to display 
the Contrast adjustment 
control screen (T) / 
OptiColor  ( S) 
Displays the control screen for
the highlighted control.
Also toggles between two
controls on some screens.
Also a shortcut to Auto Image Adjust.Standby Power On/Off
Power light
Blue = ON
Orange = Power Saving
Displays the MainMenu or exits the
control screen and
saves adjustments.
Adjusting the Screen Image 
						

							
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Do the following to ad
just 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, press SorT to scroll up or down in the Main Menu.
3. After the desired control is se lected, press button [2]. A cont rol screen like the one shown 
below appears.
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 computers graphics card so  that it outputs a 1680 x 1050 @ 60Hz video signal to 
the LCD display. (Look fo r instructions on “changing the refresh rate”  in the graphics cards 
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 “act ive area” of the LCD display.)
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. 
						

							
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Main Menu Controls
Adjust the menu items shown below by using the up  S and down  T 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.
Input Select  toggles between inputs if you ha ve more than one computer 
connected to the VX2235wm.
Audio Adjust
Vo l u m e  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 wh ich 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 industr y standard for color management, 
with support being included in many of th e 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 adjustment s to be disabled. 
						

							
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Control Explanation
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 fo r 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, press Sand T.
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 (vid eo signal input) coming from the 
graphics card in the computer, the LC D 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.
Manual Image Adjust 
						

							
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Control Explanation
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 te xt and/or graphics with pixel 
boundaries.
NOTE:  Try Auto Image Adjust first.
Sharpness  adjusts the clarity and focus of the screen image.
OptiColor Mode  provides an optimum display  environment depending on the 
contents displayed. It contains 7 user-selectable presets. These 7 presets are 
easily accessible from the short cut keys.
Standard  is for general windows environm ent and monitor default setting.
Te x t  optimized for text editing and view ing in a word processing environment.
Cinema  optimized for movie and video environment.
Game  optimized for PC/TV game environment.
Portrait  optimized for displaying indoor portraits and enhancing pictures.
Scenery  optimized for displaying outdoor scenery images.
Vivid  optimized for color luster and sharpness.
These 7 presets are carefully chosen by Vi ewsonic, but may not suit all users 
tastes. In that case, the user can eith er return to the Standard setting and 
manually adjust the brightness and contrast as desired.
OptiColor Skin Tone  includes 3 presets (Natural / Red Tone / Yellow Tone) 
which user can select according to users preference.