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 7/24/2006 Initial Release J. Chang
1b10/04/2006 Add COM / SVA panel source J. Chang
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TABLE OF CONTENTS
1. Precautions and Safety Notices 1
2. Specification 4
3. Front Panel Function Control Description 14
4. Circuit Description 18
5. Adjustment Procedure 25
6. Troubleshooting Flow Chart 48
7. Recommended Spare Parts List 56
8. Exploded Diagram and Exploded Parts List 65
9. Block Diagram 71
10. Schematic Diagrams 72
11. PCB Layout Diagrams 78
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1. Precautions and Safety Notices
1. Please carefully read this manual before operating the device and keep it available for future reference.
2. To avoid the danger of the monitor falling and thereby possibly causing injury and/or serious damage to the
monitor itself, do not place it on unstable cars or desks. Be careful to avoid placing any stress on the LCD screen
during handling.
3. Do not place this monitor in areas that are wet or where water or other liquids may come in contact with it, such
as bathrooms, kitchens, wet floors, near washing machines or by swimming pools.
4. Remove the power plug from the electrical socket before cleaning. No water-containing cleaning agent should be
used to clean the screen, but only cleaning agents formulated specifically for cleaning LCD screens. Do not put
any liquid cleaning agent directly on the screen, but put it on a soft cloth first and then gently apply the cloth to
the screen.
5. In order to guarantee reliable operation and adequate heat dissipation, do not cover or block vent holes on the
monitor. Do not put the monitor close to heat sources. Do not place the monitor on furniture such as a bookshelf,
unless sufficient ventilation is available.
6. A 3-pin grounding plug is provided for this monitor. In order to guarantee normal operation and safety of this unit,
this plug should be used with a matching grounded power socket.
7. Please follow all warnings and instructions that accompany the monitor.
8. Please pay special attention to power supply overloads, as electrical shock or fire may occur.
9. Do not place anything on the power cord. Do not hang the power cord over an area where people or objects may
pass.
10. In case the monitor is not be used for an extended period, turn off power to avoid the possibility of short circuits
caused by lightning.
11. In order to avoid electrical shock or fire risks, do not insert any object through any openings in the monitor’s
enclosure. Do not allow any liquid to come in contact with the monitor.
12. In case of any abnormal noise or odor caused by incorrect operation, turn off power immediately and contact a
professional technician. Do not attempt to repair this monitor by yourself, as electrical shock may occur when
opening the back cover or accessing internal components.
13. If any of the following conditions occurs, turn off power and contact a repair service provider:
1) the power cord is damaged or worn;
2) liquid has gotten into the monitor, or the monitor has experienced immersion or wetting;
3) the monitor has fallen;
4) the monitor’s performance shows obvious changes;
5) the monitor fails to work normally when correct procedures are followed. In that case, please make any
adjustments in accordance with instructions supplied with the monitor; do not attempt any changes to
established procedures, as further damage may occur, making successful repair of the monitor more difficult.
14. In case parts need to be replaced, you must use identical parts or those supplied by our certified manufacturers.
Any other parts used without our authorization may result in electrical shock or fire risk.
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Handing 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 POL
Surface of the LCD panel is pressed by fingers and
that may cause”mura”
Take out the monitor with cushions Taking out the monitor by grasping the LCD panel,
that May cause”mura”
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Place the monitor on a clean and soft foam pad
Placing the monitor on a foreign objects, that could scratch
The surface of the "Panel" or cause "mura"
The panel is placed facedown the lap,that may cause "mura"
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2. Specification
/ 10.5 lb
2),
R /
INTRODUCTION
FEATURES VA703b-4 / VA703m-4
Size 17 “
Luminance (Typ) 280 cd/㎡
1st TFT LCD panel
INNOLUX MT170EN01
V7
nd
2
TFT LCD panel
SVA 170SX01TB
rd
3
TFT LCD panel
CMO M170E5-L09
Input Signal
Sync Compatibility
Compatibility
Power Voltage AC 100-240V, 50/60Hz Yes
Power Consumption
Ergonomics
Contrast Ratio (Typ) 600 :1
Colors 16.2 M colors (6+2bit panel)
Response Time (Typ) 8 ms
Viewing Angle (H/V) 150 ° / 135°
Recommend resolution 1280 x 1024 @60Hz
Size 17 “
Luminance (Typ) 300 cd/㎡
Contrast Ratio (Typ) 600 :1
Colors 16.2 M colors (6+2bit panel)
Response Time (Typ) 8 ms
Viewing Angle (H/V) 130 ° / 110°
Recommend resolution 1280 x 1024 @60Hz
Size 17 “
Luminance (Typ) 300 cd/㎡
Contrast Ratio (Typ) 500 :1
Colors 16.2 M colors (6+2bit panel)
Response Time (Typ) 8 ms
Viewing Angle (H/V) 150 ° / 130°
Recommend resolution 1280 x 1024 @60Hz
Analog (75ohms, 0.7/1.0 Vp-p) Yes
Digital (DVI-D) No
Separate Sync Yes
Composite Sync No
Sync on Green No
PC Yes
Power Mac Yes
TV Box (NextVision 6) Yes
On Mode(Max / Typ) Under 36 W in max
Active Off Mode (Max)
Tilt ( -5 ° ~ +20 °)
Swivel No
Pivot No
Height Adjust No
Saving mode< 2W
Off mode <1 W
Yes
OSD Control [ 1 ] [ 2 ] [ ][?] [?] Yes
Dimension
Weight
Operating Condition
Storage Condition
Regulation
ViewSonic Corporation 4 Confidential - Do Not Copy VA703b-4_VA703m-4
Physical (W x H x D) 379x400x210 mm
Package (W x H x D)
Physical (Net Weight)
Package (Gross Weight)
Yes
Warranty Sticker For G model only
Warranty Card For G model only
Carton Sticker For G model only
PE bag of Carton
For G model only
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2-1 GENERAL specification
Test Resolution & Frequency 1280 x 1024 @ 60Hz
Test Image Size Full Size
Contrast and Brightness Controls
2-1 VIDEO INTERFACE
Analog Input Connector DB-15 (Analog), refer the appendix A
Default Input Connector Defaults to the first detected input
Video Cable Strain Relief Equal to twice the weight of the monitor for five minutes
Video Cable Connector DB-15 Pin out Compliant DDC 2B
Video Signals 1. Video RGB (Analog), Separate
Video Impedance 75 Ohms (Analog)
Maximum PC Video Signal 950 mV with no damage to monitor
Maximum Mac Video Signal 1250 mV with no damage to monitor
Sync Signals LVDS
DDC 2B Compliant with Revision 1.3
Sync Compatibility Separate Sync
Shall be compatible with all PC type computers, Macintosh
computers, and after market video cards
Resolution Compatibility
Exclusions Not compatible with interlaced video
640 x 350, 640 x 480, 720 x 400 (640 x 400), 800 x 600,
832 x 624, 1024 x 768, 1152 x 864, 1280 x 1024
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2-3 POWER SUPPLY
Internal Power Supply Part Number:PI-SB03/XXXXXXX
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)
100 to 240VAC
50 to 60 Hertz
OUTPUT CAN BE SHORTED WITHOUT DAMAGE
6 A TYPICAL AT 5 VDC
1.0 MA (MAX) AT 264VAC / 60HZ
80 % TYPICAL AT 115VAC FULL LOAD
INTERNAL AND NOT USER REPLACEABLE
32 WATTS (TYP)
1.2 ARMS @ 90VAC, 0.8 ARMS @180V AC
30 A @ 90 VAC, 60 A(MAX) @ 264 VAC
SHALL START AND F UNCTION PROPERLY WHEN
Power Supply Cold Start
UNDER FULL LOAD, WITH ALL COMBINATIONS OF
INPUT VOLTAGE, INPUT FREQUENCY, AND
OPERATING TEMPERA TURE
SHALL BE ABLE TO WITHST AND AN ANSI/IEEE
Power Supply Transient Immunity
C62.41-1980 6000V 200 AMPERE RING WAVE
TRANSIENT TEST WITH NO DAMAGE
Shall be able to withstand 1.5 times nominal line voltage
Power Supply Line Surge Immunity
for one cycle with no damage
Shall be able to function properly, without reset or visible
Power Supply Missing Cycle Immunity
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 to
Power Supply Acoustics
be in compliance with ISO 7779 (DIN EN27779:1991)
Noise measurements of machines acoustics. Power Switch
noise shall not be considered
US Type Power Cable
Length = 1.8m. Connects to AC/DC Power Color = Black
Power Saving Operation(Method) VESA DPMS Signaling
On Mode <36 W (max)
Power Consumption
Saving Mode< 2W Off Mode <1 W
Recovery Time On Mode = N/A, Active Off < 3 sec
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2-4 ELECTRICAL REQUIREMENT
Horizontal / Vertical Frequency
Horizontal Frequency
Vertical Refresh Rate
30 – 82 kHz
50 – 85 Hz.
Maximum Pixel Clock
Sync Polarity Independent of sync polarity.
135 MHz
Timing Table
Item Timing Analog
1 640 x 350 @ 70Hz, 31.5kHz
2 640 x 480 @ 50Hz, 24.68KHZ
3 640 x 480 @ 60Hz, 31.5kHz
4 MAC 640 x 480 @ 67Hz, 35.0kHz
5 640 x 480 @ 72Hz, 37.9kHz
6 640 x 480 @ 75Hz, 37.5kHz
7 640 x 480 @ 85Hz, 43.27kHz
8 720 x 400 @ 70Hz, 31.5kHz
9 800 x 600 @ 56Hz, 35.1kHz
10 800 x 600 @ 60Hz, 37.9kHz
11 800 x 600 @ 72Hz, 48.1kHz
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
12 800 x 600 @ 75Hz, 46.9kHz
13 800 x 600 @ 85Hz, 53.7kHz
14 MAC 832 x 624 @ 75Hz, 49.7kHz
15 1024 x 768 @ 60Hz, 48.4kHz
16 1024 x 768 @ 70Hz, 56.5kHz
17 1024 x 768 @ 72Hz, 58.1kHz
18 1024 x 768 @ 75Hz, 60.0kHz
19 1024 x 768 @ 85Hz, 68.67KHZ
20 1152 x 864 @ 75Hz, 67.5KHZ
21 MAC 1152x870@75HZ, 68 .68K H Z
22 1280 x 960 @ 60Hz, 44.93KHZ
23 1280 x 960 @75Hz, 56.25KHZ
24 1280 x 1024 @ 60Hz, 63.98KHZ
25 1280 x 1024 @ 75Hz, 79.97KHZ
*1. Tolerance ≧ ± 2kHz.
*2. Any timing not in the list, it should display as normal or show on “OUT OF RANGE” OSD message without blanking.
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
*3. The image quality of 85Hz mode might be worse than 75Hz.
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Primary Presets
1280 x 1024 @ 60Hz
User Presets
Number of User Presets (recognized timings) Available: 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 (640 x 350, 720 x 400 & 640 x 400), it should recall factory setting when
execute “Auto Adjust”
● The monitor needs to do “Auto Image Adjust” the first time a new mode is detected
(See section “0-Touch™ Function Actions”)
● The monitor needs to do “Auto Adjust” the first time a new mode is detected
(See section “0-Touch™ Function Actions”)
2-5 AUDIO INTERFACE (SPEAKER SPECIFICATION) ( for VA703m-4 only)
Line input connection
3.5 mm stereo jack
Line input signal 1.0Vrms
Line input impedance >10 kOhm
Maximum power output (Electric)
1 W @ < 15% DISTORTION
Signal to Noise Ratio 50 dB
Frequency response 200 Hz – 20 Khz
Distortion
<15 % THD (@1kHz)
There should be no audible vibration with volume at
Vibration
100%. (Input signal within 1.0 Vrms)
There should be no affect on the screen image stability
Screen image
under any conditions
Connector PC99 requirement Audio in
Lime Green pantone # 577C
Cable type / length 3.5mm stereo cable / 1.8m length
NOTE: THERE IS NO GUARANTEE <1W POWER
Audio DPMS
CONSUMPTION IN ACTIVE OFF MODE, WHEN THE
AUDIO CABLE IS CONNECTED
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2-6 TFT LCD PANEL
st
Panel Source
1
Type TN, LVDS
Active Size 337.9mm (H) x 270.3mm (V)
Pixel Arrangement RGB Vertical Stripe
Pixel Pitch 0.264 mm
Glass Treatment Anti Glare (Hard coating 3H)
# of Backlights 4 CCFL edge-light
Backlight Life 50,000 Hours (Typ)
Luminance –Condition: CT = 6500 K
Contrast = Max, Brightness = Max
Brightness Uniformity 75 % (Min)
Contrast Ratio 600 :1 (Typ), 500 :1 (Min)
Color Depth Vertical) 16.2 million colors (6+2 bit panel)
Viewing Angle (Horizontal)
Viewing Angle (Vertical)
Response Time
10%-90% @ Ta=25°C
Panel Defects Please see Panel Quality Specifications.
INNOLUX MT170EN01 V.7
280 cd/m2 (Typ after 30 minute warm up)
250 cd/m2 (Min after 30 minute warm up)
Contrast Ratio 600 :1 (Typ), 400 :1 (Min)
Color Depth Vertical) 16.2 million colors (6+2 bit panel)
Viewing Angle (Horizontal) 130 deg (Typ)@ CR>10
Viewing Angle (Vertical) 110 deg (Typ) @ CR>10
Response Time
10%-90% @ Ta=25°C
8 ms (Tr= 2 ms, Tf = 6 ms) (Typ)
20ms (Tr= 6 ms, Tf = 14 ms) (max)
Panel Defects Please see Panel Quality Specifications.
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Lv (Max) = The Luminance requirement of
rd
Panel Source
3
CMO M170E5-L09
Type TN, LVDS
Active Size 337.9mm (H) x 270.3mm (V)
Pixel Arrangement RGB Vertical Stripe
Pixel Pitch 0.264 mm
Glass Treatment Anti Glare (Hard coating 3H)
# of Backlights 4 CCFL edge-light
Backlight Life 50,000 Hours (Typ) @ 6.5mA
Luminance –Condition: CT = 6500 K
Contrast = Max, Brightness = Max
300 cd/m2 (Typ after 30 minute warm up)
230 cd/m2 (Min after 30 minute warm up)
Brightness Uniformity 1.7 (Max)
Contrast Ratio 500 :1 (Typ), 400 :1 (Min)
Color Depth Vertical) 16.2 million colors (6+2 bit panel)
Viewing Angle (Horizontal) 150 deg (Typ)@ CR>10
Viewing Angle (Vertical) 130 deg (Typ) @ CR>10
Response Time
10%-90% @ Ta=25°C
8 ms (Tr= 2 ms, Tf = 6 ms) (Typ)
18 ms (Tr=7 ms, Tf = 11 ms) (max)
Panel Defects Please see Panel Quality Specifications.
2-7 IMAGE PERFORMANCE
Display Size
Horizontal Display Size, Primary Preset Full Screen
Vertical Display Size, Primary Preset Full Screen
Luminance
(Max) –Condition:
Lv
Brightness / Contrast = 100%
CCT = USER COLOR (R/G/B=100%)
section 4-6 “TFT LCD PANEL”
Lv (Def) –Condition:
Brightness / Contrast = default
Color Temperature = 6500K
Lv (6500K) / Lv (Max) x 100% > 85%
Lv (sRGB/6500K) –Condition:
Brightness / Contrast = Default
CCT =sRGB
Lv (sRGB) / Lv (Max) x 100% > 85%
Lv (9300K) –Condition:
Brightness / Contrast = Default
CCT = 9300K
Lv (9300K) / Lv (Max) x 100% > 70%
Lv (5400K) –Condition:
Brightness / Contrast = Default
CCT = 5400K
Lv (Brightness) –Condition:
Contrast = 100%
Lv (Contrast) –Condition:
Brightness = 100%
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Lv (5400K) / Lv (Max) x 100% > 75%
Lv(Brightness=0%)/ Lv(Brightness=100%) x 100% ≤ 55%
Lv(Contrast=0%) / Lv(Contrast=100%)x 100% ≤ 30%
Page 15
Contrast Ratio
(Max) –Condition:
CR
Contrast / Brightness = 100%
CCT = USER COLOR (R/G/B=100%)
CR(6500K) –Condition:
Same as the Contrast Ratio in section 4-6 “TFT LCD
PANEL”
Contrast / Brightness = 100%
CCT = 6500K
Saturation
Contrast = Default
Brightness = Default
Test pattern = 64-gray
Contrast = 100%
Brightness = 100%
Test pattern = 64-gray
Contrast = 100%
Brightness = 100%
Input signal level = 720mV
Test pattern = 64-gray
Preset Color Temperatures
sRGB
CR(6500K) / CR(Max)≧ 93%
NO VISIBLE SATURATION
8~10 VISIBLE SATURA TION
8~10 VISIBLE SATURA TION
It should meet IEC 61966-2-1 (1999-10) standard.
CCT (typ) = 9300K (u’CCT=0.1888; v’ CCT=0.4457)
Preset 1
CCT (max) = 10250K, CCT (min) = 8500K
Δu’v’<0.01 (@ Full White pattern)
CCT (typ) = 6500K (u’CCT=0.1978; v’ CCT=0.4684)
Preset 2 (Primary)
CCT (max) = 6950K, CCT (min) = 6100K
Δu’v’<0.01 (@ Full White pattern)
CCT (typ) = 5400K (u’CCT=0.2044; v’ CCT=0.4808)
Preset 3
CCT (max) = 6185K, CCT (min) = 4935K
Δu’v’<0.01 (@ Full White pattern)
Each color preset shall be adjustable. Red, Green, and Blue shall be
Preset Color Temperature
individually controlled.
Video Cards Compatibility
Peaking Performance: Peaking is not adjustable
Raster Artifacts
● Video Artifacts : No visible streaking, sag, or smearing artifacts when driven by the specified video
cards in the primary mode and after user adjustment to best condition
● Power Supply, and Grounding Artifacts : No visible artifacts in any specified video mode within the
horizontal or vertical frequency range of the monitor
● Temperature Drift : Image shall not drift or lose fine-tune adjustment
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2-8 MECHANICAL
Dimension
Dimension (Desktop)
Width
Height (Height adjust to the bottom)
Depth
Monitor Weight
*Refer to Figure 1
Dimension (Head Only / Wall Mount)
Width
Height
Depth
Monitor Weight
*Refer to Figure 1
Ergonomics
Tilt Up step 1
Tilt Down
379mm
400mm
210mm
3.6kg/7.9Ib
379mm
338mm
68mm
3.3kg/7.3Ib
From 0º to +20º±3°
From 0° DOWN TO -5°±3°
Swivel Right N/A
Swivel Left N/A
Height Adjust N/A
Pivot N/A
Cabinet Material
Display Head Plastic Material
Neck/Base Plastic Material
Internal Plastic Cabinet Components
Front Bezel Color
Neck, Base, and Rear Cover Color
ABS-HB
ABS-HB
All internal plastic cabinet components shall be in compliance with the
requirements of TCO03
The reference for the bezel is the silver color (VA703m) and the
midnight gray color (VA703b) chip provided by ViewSonic
The reference for the bezel is the black color (VA703m) and the
midnight gray color (VA703b) chip provided by ViewSonic.
The color difference between any two cabinet components shall be less than 0.80
“Delta E”, in the 1976 CIE L*a*b Colorspace.
Rear logo color Mold type
The color drift due to UV-Light shall be less than 3.0 “Delta E” in the
Cabinet Color Drift Due To UV-Light
Cabinet Texture Mold-Tech # 11010 used on all external textured surfaces.
Samples
1976 CIE L*a*b colorspace. Testing shall be performed according to
the requirements of ASTM Test Method D4459-93.
The supplier shall submit textured color chips, plastic material
specifications, and Material Safety Data Sheets for approval.
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3. FRONT PANEL CONTROLS AND INDICATORS
Short Cuts Function from the button(s)
[1] Main Menu
[2] Auto Image Adjust
[▼] or [▲]
[▼]+ [▲] Recall both of Contrast and Brightness to default
[1] + [2]
[1] + [▼] + [▲]
(keep pushing 5 sec)
[1] + [▼] Power Lock
[1] + [▲] OSD Lock
Remark : All the short cuts function are only available while OSD off
Front Panel Hardware Controls
Power Switch (Front Head) Power Control, soft Power Switch.
*1 These functions can be recalled to default by [▼]+ [▲]
2
*
These functions are not available under Native Resolution Mode
3
*
These functions setting can be recalled to default by [▼]+[▲] under audio mode
[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
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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 4-7
2. Clean all the mode setting buffer
3. Execute Auto Image Adjust
Note: Memory Recall should have no effect for Language, Power Lock, User Color Settings
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
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Factory Defaults
Item Defaults Item Defaults
Contrast 70% Volume
50%
( for VA703m-4 only)
Brightness 100% Balance N/A
Color T em perature 6500K Treble N/A
Sharpness 0% Bass N/A
OSD H. Position 50% 720x400/640x400 720x400
640x480@60Hz
OSD V. Position 50%
640x480@60Hz
720x480@60Hz
In SOG and Composite,
OSD Time Out 15 Sec
720x480@60Hz
N/A
640x480@60Hz
In SOG and Composite,
OSD Background Enabled
1152x864@75Hz
N/A
1152x870@75Hz
In SOG and Composite,
Resolution Notice Enabled
1280x768@60/75/85Hz
N/A
1024x768@60/75/85Hz
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4. Circuit Description
A. AC-DC CONVERTER
The power supply with a high-integrated green-mode PWM controller provides several features to
enhance the performance of power flyback converters.
U801 is a PWM controller and provides many protection functions.
U802 is a photo couple to transfer the feedback signal from the second side which U803 detected both of
the output DC voltage on 5V and 24V.
Z802 detected the working voltage on U801 and Q802 would pull down the voltage on U801 pin5 to
shut down U801 if feedback loop was failed.
R828 would be a dynamic load which was active while backlight was turned off and system still
working on, this kept 24V output voltage under 32V to protect the panel. After system went to
power saving mode, the R828 would no loaded. This was detected by Z803 active the R828 to load or
not.
B,Scaling Controller
Overview
Realtek RTD2523B series products are all-in-one LCD monitor controllers support up to
SXGA/XGA(optional), and integrate Realtek high performance ADC, TMDS Rx(optional), scaling engine,
OSD engine, LVDS TX, RSDS TX and so on. Moreover, all products are pin compatible in low pin count
package to save cost and make the design easier
General
z Embedded dual DDC support DDC1, DDC2B, DDC/CI
z Zoom scaling up and down
z Embedded Pattern Generator
z No external memory required.
z Require only one crystal to generate all timing
z Embedded reset control output
z Embedded crystal output to MICROP
z 3 channels 8 bits PWM output, and selectable PWM clock frequency.
Pin Description
(I/O Legend: A = Analog, I = Input, O = Output, P = Power, G = Ground)
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ADC: 15 pins
Name
ADC_GND AG 27 ADC ground
ADC_REFIO AP 28 ADC band-gap voltage de-coupling 1.20V
ADC_VDD AP 29 Analog power (3.3V)
BLUE+ AI 30 Analog input from BLUE channel
BLUE- AI 31 Analog input ground from BLUE channel
ADC_GND AG 32 ADC ground
SOG/ADC_TEST AIO33 SOG in/ADC test pin
GREEN+ AI 34 Analog input from GREEN channel
GREEN- AI 35 Analog input ground from GREEN
ADCB_VDD AP 36 Analog power (3.3V)
RED+ AI 37 Analog input from RED channel
RED- AI 38 Analog input ground from RED channel
ADC_GND AG 39 Analog ground
ADC_GND AG 40 Analog ground
ADC_VDD AP 41 Analog power (3.3V)
AHS AI 42 Analog HS input (10), (4), (5)
AVS AI 43 Analog VS input (2), (4), (5)
PLL: 8 pins
Name
XO AI 1 Reference clock output
XI AO 2 Reference clock input
DPLL_GND AG 3 Ground for digital PLL
DPLL_VDD AP 4 Power for digital PLL (3.3V)
APLL_VDD AP 5 Power for multi-phase PLL (3.3V)
PLL_TEST1 AIO6 Test Pin 1 / IRQ#
PLL_TEST2 AIO7 Test Pin 2/Power-on-latch for crystal out
APLL_GND AG 8 Ground for multi-phase PLL
I/O
I/O
Pin No Description Note
channel
Pin No Description Note
Frequency
Control Interface: 7 pins
Name I/O Pin No Description Note
SDIO [0] IO 54 Serial control I/F data in / Parallel port
data [0]
SDIO [1] / TCON [4] /
BBLU [0]
SDIO [2] / TCON [3] /
BBLU [1]
SDIO [3] / PWM2 /
TCON [2]
SCLK I 50 Serial control I/F clock (2), (3), (5)
SCSB I 111 Serial control I/F chip select (2), (3), (5)
RESET O 56 RESET output for Micron (2), (5), (6) / 2mA
IO 53 Parallel port data [1] / TCON [4] / TTL
BBLU [0]
IO 52 Parallel port data [2] / TCON [3] / TTL
BBLU [1]
IO 51 Parallel port data [1] / TCON [4] / PWM2(1), (2), (3), / 2mA
(2), (3), / 2mA
(1), (2), (3), / 2mA
(1), (2), (3), / 2mA
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PWM2 /
COUT /
TCON[12]
V [0] V [0] ARED [0] TCON [11] (1), (7), (8)
V [1] V [1] BRED [1] TCON [10] (1), (7), (8)
V [2] V [2] BRED [0] TCON [9] (1), (7), (8)
V [3] V [3] AGRN [1] TCON [8] (1), (7), (8)
V [4] V [4] AGRN [0] TCON [7] (1), (7), (8)
V [5] V [5] DHS DHS (1), (7), (8)
V [6] V [6] DVS DVS (1), (7), (8)
PWM2 /
COUT /
TCON[12]
ARED [1] PWM2 /
COUT /
TCON[12]
(9)
V[6]
123 TCON [1] /
V[7]
124 TCON [0] /
VCLK
V [7] V [7] DENA DENA (1 ), (7), (8)
VCLK VCLK DCLK / TCLKDCLK / TCLK (1), (7), (8)
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TMDS: 18 pins
Name I/O Pin No
Description
Note
TMDS_TST/ PWM1 AIO9 TMDS_TEST Pin / PWM1 /
Power-on-latch for serial / parallel port
TMDS_GND G 10
TMDS_VDD P 11 (3.3V)
EXT_RES A 12 Impedance Match Reference.
TMDS_VDD P 13 (3.3V)
RX2P I 14 Differential Data Input
RX2N I 15 Differential Data Input
TMDS_GND G 16
RX1P I 17 Differential Data Input
RX1N I 18 Differential Data Input
TMDS_VDD P 19 (3.3V)
RX0P I 20 Differential Data Input
RX0N I 21 Differential Data Input
TMDS_GND G 22
RXCP I 23 Differential Data Input
RXCN I 24 Differential Data Input
TMDS_GND G 25
TMDS_VDD P 26 (3.3V)
PWM Interface: 3-2=1 pin (PWM1, PWM2 can be selected from 1 of 3 possible pins.)
Name
PWM2 / TCON [2] / S [3] O 51 PWM2 / TCON [2] / SDIO [3] (1), (2), (3), (5), (8),
PWM2 / TCON [13] / COUT O 55 PWM2 / TCON [13] / Crystal out (2), (8), (9)
PWM2 / TCON [12] / COUT O 113 PWM2 / TCON [12] / Crystal out (2), (8), (9)
PWM1 / TMDS_TST AIO 9
PWM1 / DDCSDA / TCON [1] /
BBLU [0]
PWM1 / DDCSDA2 (HDCP) /
TCON [7]
PWM0 / REFCLK IO 112
I/O
IO 47
IO 125
Pin NoDescription Note
PWM1/ TMDS_TEST Pin /
Power-on-latch for serial / parallel port
PWM1 / DDC serial control I/F data input
/ output / TCON [4]
PWM1 / DDC serial control I/F data input
/ output / TCON [7]
PWM0 / (In / out) test pin for DCLK /
Video8 even-odd signal
(2), (7), (8)
(1), (2), (3), (5), (8),
(1), (2), (3), (5), (8),
(2), (9)
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C, MTV512M
The MTV512M micro-controller is an 8051 CPU core
embedded device especially tailored for flat panel
display applications. It includes an 8051 CPU core,
768-byte SRAM, 4 channels of 6-bit ADC, 3 external
counters/timers, 6 channels of PWM DAC, VESA
DDC interface, and a 64K-byte internal program
Flash-ROM memory in 44-pin PLCC package
FEATURES
• 8051 core, 12MHz operating frequency with
single/double CPU clock option
• 0.35um process; 3.3V power supply
• 768-byte RAM; 64K-byte program Flash memory
• Maximum 6 channels of PWM DAC
• Compliant with VESA DDC1/2B/2Bi/2B+ standard
• Dual slave IIC addresses; two H/W auto transfer
DDC1/DDC2x data for both D-sub and DVI
interfaces
• Watchdog timer with programmable interval
• Support external counters/timers, 1 & 2
• Single/double frequency clock output
• Two external interrupts, INT1 is shared with Slave
IIC interrupt source.
• Maximum 4 channels of 6-bit ADC
• Flash-ROM code protection selection
• 44-pin PLCC package
D. INVERTER
In order to drive the CCFLs embedded in the panel module, there is a push-pull inverter to convert by the controller. from
input 24V up to hundreds of AC voltage output peak to peak.
The inverter is formed by symmetric in order to drive the separate lamp modules.
The input stage consists of a PWM controller, push-pull inverter, and switching MOSFET to conv ert DC input into AC output.
The output stage consists of a tuning capacitor, transformer, and push-pull MOSFET pair to boost AC output up to hundreds of
voltage peak to peak.
And one resister is serial to lamp for output volt a ge feedback.
There are two signals which control the inverter come from system to turn on the inverter and control brightness. Logic “low”
level which send to U901 is turn on the inverter.
BL-ADJ signal control brightness by DC level which was integral from PWM signal.
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5. Adjustment Procedure
1. Function test
1.1 products
17” LCD Monitor
1.2 test equipment
Color video Signal& pattern (Or PC with SXGA resolution and a sound card)
1.3 Test Condition
Before function test and alignment ,each LCD Monitor should be warmed up at least
30 minutes with the following conditions:
A: in roon temperature
B with full white screen ,RGB ,and black
C. with cycled display model:
1280 x 1024 @ 60Hz
1.4 Test display& Pattern
1.4.1 Compatible model
Item Timing Analog
1 640 x 350 @ 70Hz, 31.5kHz
2 640 x 480 @ 50Hz, 24.68KHZ
3 640 x 480 @ 60Hz, 31.5kHz
4 MAC 640 x 480 @ 67Hz, 35.0kHz
5 640 x 480 @ 72Hz, 37.9kHz
6 640 x 480 @ 75Hz, 37.5kHz
7 640 x 480 @ 85Hz, 43.27kHz
8 720 x 400 @ 70Hz, 31.5kHz
9 800 x 600 @ 56Hz, 35.1kHz
10 800 x 600 @ 60Hz, 37.9kHz
11 800 x 600 @ 72Hz, 48.1kHz
12 800 x 600 @ 75Hz, 46.9kHz
13 800 x 600 @ 85Hz, 53.7kHz
14 MAC 832 x 624 @ 75Hz, 49.7kHz
15 1024 x 768 @ 60Hz, 48.4kHz
16 1024 x 768 @ 70Hz, 56.5kHz
17 1024 x 768 @ 72Hz, 58.1kHz
18 1024 x 768 @ 75Hz, 60.0kHz
19 1024 x 768 @ 85Hz, 68.67KHZ
20 1152 x 864 @ 75Hz, 67.5KHZ
21 MAC 1152x870@75HZ, 68.68KHZ
22 1280 x 960 @ 60Hz, 44.93KHZ
23 1280 x 960 @75Hz, 56.25KHZ
24 1280 x 1024 @ 60Hz, 63.98KHZ
25 1280 x 1024 @ 75Hz, 79.97KHZ
*2. Any timing not in the list, it should display as normal or show o n “OUT OF RANGE” OSD message without
blanking.
*3. The image quality of 85Hz mode might be worse than 75Hz.
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Firmware Update Procedure
1. The monitor’s firmware update for VA703m/b have two method.
1.1. Download the MCU IC by the fire machine. This procedure is finished in SMT.
1.2. ISP Method. When the monitor’s BIOS isn’t exist or firmware isn’t final program, this method Is worked by ISP
Cord with monitor.
2. VA703m/b monitor upgrade firmware by ISP Cord.
2.1. Equipment Needed
- USB cable for print port *1
- VGA cable*1
- LPT cable (25pin)*1
- AC power cable*1
- ISP fire cord (the fixture is made in TE ) for firmware upgrade*1
- Power adapter for firmware upgrade (this adapter is made in TE)*1
- A computer with Windows XP
- VA 703m/b monitor ( no firmware)
- a additional monitor for system display
- ISP & ISP3.0program
NOTE:
The fixtures for firmware upgrade provide two differe nt methods to fire. Please check you monit or’s Main board,
refer to MCU-RSIC type and choose the method.
Below form appear the relation between the method and the MCU-RSIC type
METHOD
A
B
MCU
MYSON
OTHER
ASIC
M-STAR & NOVATEK
REALTEK
LPT PORT
JUMPER
PIN2-3 CLOSED
PIN1-2 CLOSED
TEST PCFixture ISP_CORDFixture POWER_ADAPTER
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LPT CableAC power CableVGA Cable
ISP3.0
SOFT
USB FOR PRINT
2.2. Setup Procedure
2.2.1 Connect PO1 of ISP fixture with print port of computer by LPT cable
2.2.2 Connect PO2 of ISP fixture with USB port of computer by USB cable
2.2.3 Connect PO3 of ISP fixture with monitor VGA port by VGA cable
2.2.4 Connect mouse, keyboard, AC power, monitor with computer
2.2.5 Plug AC cable in power adapter AC jack
2.2.6 Connect power adapter DC_OUTPUT port to main board DC_IN port
2.2.7 Connect PO3 of ISP fixture with VGA port of monitor’s main board by VGA cable
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PO2 to USB cablePO1 to LPT cable
AC JACK
DC_IN port
VGA port
jumper
PO3 to VGA cable
NOTE:
Do STEP2.2.6 and STEP2.2.7 for monitor’s main board only. Monitor firmware upgrade will jump this step.
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2.3. Soft install
Install ISP3.0 program by selecting and clicking “…\isp3.0\setup.exe”, press “YES” or “NEXT” buttons
until setup is complete.
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Installation will create a icon for ISP application in “START MENU”\PROGRAM
Press “finish” button exit setup
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Firmware and EDID upgrade/update Methods
STEP1: Choose the DCC written Program
set up the DCC written fixture ,check whether the connection between main board is in well
condition ,see attached file 1.1&1.2 per the product model ,choose the corresponding Model, DCC
written process, the model mr171-AAA should apply the SIP Program
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STEP2: Creat security file
Choose the Tab "create Security File " to enter next Dialogue Item
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STEP3: Input the related parameter, save them and take up the next step
STEP4: Choose the Tab MTV TYPE
Choose the MTV512M64 from the TAB ISP ITEMS
DCC Written model Diagram Table as below
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STEP5: DCC WRITTEN methods
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SETP6: Choose the DDC Written BIOS document
Choose the Tab LOAD MCU FILE,Looking up the related BIOS document in my Computer ,and Point
the confirm Tab
when the BIOS Documents' loading is successful ,you can find the picture as above
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Step 7.Confirm the BIOS'S check sum
In the above attached Display picture ,you should check whether the check sum's Data comply
to the bios' DCC written, if there is no problem ,pls press the run menu to write
If showed the picture as above pls check whether the DDC write fixture is well Connected with PC
the power board is power on and the program's setup is all right
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The normal program is writing
The program has finished writing
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Disassembly Procedure
1. Remove the hinge cover
3. open the back cover ,pull out the speaker wire
2. Unscrew the back cover’s screw
4. Tear off the aluminum foil where fix up the light
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5. T ear off the aluminum foil where cover the FFC cable, take out the key board from bezel ,pull out FFC cable from the
main board;
6. pull out the two pcs screw form the main board
7. Pull out the two screws where lie in the two sides of the frame
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8. pull out the screws which fix up the bezel and then take out the bezel
9. Take out the screw which covers the shield
10. Pull out the lamp wire material
11. take out the screw form the power board ,pull out the power boards’ connecter wire
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12. take out the FCC Cable AL where lies in the panel ,pull out the FCC cable
13. take out the main board’s screw
14. Remove the fame down towards
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Packing Procedure
1 Paste production film to protect the monitor screen.(Figure 1)
tape
2 Put the monitor in the PE bag and seal bag with type (Figure 2)
Production film
tape
3 Put the cushions on the monitor.(Figure 4)
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4. Put the base in the EPE bag. and then,place the base on the cushions ,as figure;
5. Place the monitor into the carton and then put all accessories into carton .At last,close the carton.
Power cord
Use ‘s Guide
Base signal cord
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6. Troubleshooting Flow Chart
Main Procedure
Start
Connect all of devices to
the LCD monitor
Power On
Is indicator LED
light?
Yes
No
A. Power Circuit
Troubleshooting
1
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1
Is backlight on?
Yes
Display Performance
O.K.?
Yes
Function Adjustment
O.K.?
Yes
Audio Function O.K.?
No
No
No
No
B. Backlight
Troubleshooting
C. Performance
Troubleshooting
D. Function
Troubleshooting
E. Audio
Troubleshooting
No Trouble Found
End
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A. Power Circuit Troubleshooting
Start
Change AC/
DC Adapter
Retry Power
On
End
Change Main
Board & Retry
No Trouble Found
End
End
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B. Backlight Troubleshooting
Start
Change
Inverter and
Retry
Change
Main
Board&
Retry
End
End
Backlight
Change
Module
No Trouble Found
End
End
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C. Performance Troubleshooting
Start
Screen is
scrolling?
NO
Screen is
flickering?
NO
LCD Line Defect?
NO
Yes
YES
YES
Change VGA
Cable
YES
Change
Inverter Board
YES
Change LCD
Module
YES
NO
No
Change Main
Board
YES
Change Main
Board
YES
NO
Change LCD
Module
YES
Bad Uniformity?
NO
Is screen white?
NO
2
YES
YESNO
Change LCD
Module
YES
Check
Connector
YES
Change Main
Board
YES
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2
Screen with noise or line
bar?
No
Screen is smaller?
Yes
Prss Reset Button from
front panel control
No
Change Main
Board
Make sure relution is set
at default
No
YesYes
End
No
No Trouble Found
End
Yes
Yes
Reset O.K.?
No
Change Main
Board
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D. Function Troubleshooting
Start
Control Menu not
Functioning?
Yes
No
Change
Control Board
and Retry?
No
Change Main
Board
No Trouble Found
End
Yes
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E. Audio Troubleshooting
Start
Make sure sound output, Audio
cable is OK.
No Sound
No
Sound is broken?
Yes
Yes
Change
Speaker
Change
Speaker
No
Volume
Unadjustable?
No
No Trouble Found
End
Yes
Change Main
Board
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7. Recommended Spare Parts List
#
)
RECOMMENDED SPARE PARTS LIST (VA703b-4)
ViewSonic Model Number:VS11366
Serial No. Prifix:
ItemECR/ECN ViewSonic P/NRef. P/NLocationUniversal number
1 Accessories:
2
PC Board
3
Assembly:
4
5
Cabinets:
6
9
7
Cables:
8
10
Documentation:
11
Hardware:
12
Packing Material:
13
14
15
QANRev: 1a
Description
AC POWER CORD 美規 22AWGA-00006505W402221509531
MAIN BOARD ASSY B-00006501XLM191A040002
KEY BOARD ASSY B-00006502XLM191A050001
POWER BOARD+INVERTER BOARD ASSYB-00006503XLM1700390010
BEZEL ASSY LM/MR17I-AAC-00006508XLM171A100004
HOUSING ASSY LM/MR17I-AAC-00006509XLM171A110002
BASE ASSY(midnight gray)C-00006583XLM171A280003
VGA CABLE 30AWG UL20276CB-00006504W0926418AQ951
FFC CY050408001 - Flat CableCB-00006506W47A103015001
Safety Label DC-00006500F102506171A02
BRACKET ASSY(midnight gray
LCD Panel M170E5-L09 17" SXGA CMOAdded on 09/28/06E-00005791E34722170SC01
Bracket (midnight gray)HW-00006511XLM171A200002
Bracket (midnight gray) for CMOAdded on 09/28/06HW-00008013XLM191A200001
POLYETHYLENE-L EPSP-00006584F20133171A002
POLYETHYLENE-R EPSP-00006585F20143171A002
PLASTIC BAG PEP-00006586F300250000070
Craft Box - LM/MR17I-AA
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.
CARTON C(K4K) LM/MR17I-AA L440*W147*H485mm for
viewsonic
FUNCTION BUTTON PC SILVER LM/MR17I-AAA REV:0
VA703b
VA703b
Description
A-00006505
B-00006501XLM191A040002
W402221509531
C-00006583XLM171A280003
C-00006590
CB-00006588
DC-00006500
HW-00006511
P-00006591
P-00006587
PL-00006589
XLM171A110003
W47B101035001
F102506171A02
XLM171A200002
F400714171A01
F400718171A02
P763P398LM020-B
Remark 1:
Remark 2:
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 (VA703M-4)
ViewSonic Model Number:VS11366
Serial No. Prefix: QAPRev: 1b
Box - K4K MR17I-AAA VA703
Generic Foam Se
Generic Bo
Function Button - Rev.
Remark 1:
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
Remark 2:
checks of each item between this version and prior versions.
HOUSING ASSY LM/MR17I-AAA BLACK RGB+AUDIO REV:
VASA BKT T=0.8mm SEC
HOUSING ABS HB BLACK INJECTION LM/MR17I-AAARGB+AUDIO REV:
GLUE 50g/BOTTLE(-60° C~+200° C)
BRACKET ASSY LM/MR17I-AAAbracktet+hinge_bkt+screwBLAC
SCREW PWΦ4.0*L8mm NICKE
Hinge SPCC WITH NICKEL LM/MR17I-AAA FRONT 5° REAR 20° REV:
Bracket ABS HB BLACK INJECTION LM/MR17I-AAA REV:
BASE ASSY LM/MR17I-AAA BASE+RUBBER BLAC
RUBBER FOOT ROUND Φ12*T2mm BLAC
BASE ABS HB BLACK INJECTION LM/MR17I-AAA REV:
SHIELD ASSY LM/MR17I-AAA SHIELD+MYLA
SHIELD SPTE LM/MR17I-AAA REV:
MYLAR L95*W79.5*T0.1mmWHITH ADHESIV
MAIN BOARD ASSY LM/MR19I-AA
IC EEPROM AT24C16 2500nsATMEL SOIC-8 2K*8 (SMD)
IC LINEAR IC VOLTAGEREGULATOR GL1117A-3.3(INPUT 4.8~12V OUTPUT
3.3V)
IC LINEAR VOLTAGE REGULATORAP1117E33A SOT-223 ANACHIP(SMD
IC MCU MTV512GMG 64K MYSONLQFP-48P Lead Free (SMD
IC ASIC/SCALER RTD2023LPLCC-48P REALTEK Lead Free(SMD
LINEAR IC POWER AMPLIFIEwith Volume contorlPA2065JI 2W DIP-16PIN
ANPEC(DIP)
BARE PCB LM/MR19V-AAAD MAINBOARD 2SIDES FR-4 T1.6mmREV:1.
CAP MLCC NPO 5pF 50V±0.25%(C) 0603 TAPPING(SMD)
CAP MLCC NPO 10pF 50V ±5%0603 TAPPING (SMD)
CAP MLCC /NPO 12PF 50V±5%(J) 0603 TAPPING (SMD)
CAP MLCC /NPO 22PF 50V±5%(J) 0603 TPPING (SMD)
CAP MLCC X5R 1uF 16V ±10%(K) 0603 TAPING (SMD)
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L5 FEB/ 0R-0603
D4
UDZ5.6B
Closed to connector
JP2
SHELL1
R
G
B
HSYNC
VSYNC
RGB GND
SYNC GND
DDC SCL
DDC SDA
DVI+5V
HPD
1/3shield
2/4shield
0/5shield
clk shield
DAT0+
DAT0-
DAT1+
DAT1-
DAT2+
DAT2-
DAT3+
DAT3-
DAT4+
DAT4-
DAT5+
DAT5-
clk+
clk-
SHELL2
JACK
25
C1
C2
C3
C4
8
C5
15
6
7
14
16
11
3
19
22
18
17
10
9
2
1
13
12
5
4
21
20
23
24
26
R20
2K
DDC1_SCL
DDC1_SDA
D5
UDZ5.6B
R18 100
R19 100
R21
2K
DDCSCL
VSIN
HSIN
DDCSDA
DGND
DDC1_SCL
C110
100nF
D17
MLL5232B 5.6V
C13
22pF
AHS0
AHS0
AVS0
AVS0
3
B0+
B0-
G0
G0-
R0+
R0-
VGA5V_
C108
100nF
D25
BAV99
+
1
R128
R129
R130
R131
R132
R133
R134
R135
B0+
B0-
G0+
G0-
R0+
R0-
C111
NC/10pF
VGA5V_1
D11
LL5232B 5.6V 5%
10
0P
RX
RX0P
10
RX0N
RX0N
10
RX1P
RX1P
10
RX1N
RX1N
10
2P
RX
RX2P
10
RX2N
RX2N
10
RXCP
RXCP
10
RXCN
RXCN
C112
NC/10pF
RG1
R23 47
R25 100
R27 100
R30 100
R32 47
R34 100
DDC2_SDA
3
D24
BAV99
C12 47nF
C16 47nF
C17 470nF
C19 47nF
C20 47nF
C21 47nF
C23 47nF
C14
12pF
U1
DGND
D8
UDZ5.6B
C109
100nF
5
10
4
9
3
8
2
7
1
6
VGA_CON15
DDC1_SCL
R39 100
DDC2_SDA
C25
100nF
3
D18
BAV99
DGND
CONNECT
DGND
VGA5V
VGA_B+
VGA_BVGA_G+
VGA_G
VGA_R+
VGA_R-
DVI_POWER
D15
LL5232B 5.6V 5%
3
VGA5V_1
BIN
L6 FEB_0603
GIN
L7 FEB_0603
RIN
L8 FEB_0603
DDC1_SDA
R4010K 1/16W
D19
BAV99
D10
UDZ5.6B
DVII_DETECT
D16
LL5232B 5.6V 5%
3
D20
BAV99
DDC1_SDA
15
14
13
12
11
R24 75
R28 75
3
D21
BAV99
R22 0
R26 0
R31 0
R33 75
D14
LL5232B 5.6V 5%
3
D22
BAV99
C15 5pF
C18 5pFR29 47
C22 5pF
CONNECT
C107
100nF
DDC2_SCL
3
D9
UDZ5.6B
D23
BAV99
DSUB_DETECT
DDC2_SCL
SOG0
1M
R1.8DVCC
SOG0
R1.8DVCC
100nF
2
DGND
C104
R1.8DVCC
ADC_GND
C105
1
D1
BAV99
3
DGND
2
100nF
1
3
GINRIN
D2
BAV99
R1.8DVCC
2
100nF
Closed to connectorClosed to connectorClosed to connector
C106
ADC_GNDADC_GND
1
D3
BAV99
3
BIN
2
C114
100nF
C113
1
2
100nF
C115
1
2
100nF
C117
2
1
100nF
C118
1
2
100nF
C119
2
1
100nF
C116
1
2
100nF
ViewSonic Corporation82Confidential - Do Not Copy VA703b-4_VA703m-4
C120
1
2
100nF
1
3.3DVCC
DGND
ViewSonic Corporation
Model
Title
DateRev:
Page 87
11. PCB Layout Diagrams
ViewSonic Corporation83
Confidential - Do Not Copy VA703b-4_VA703m-4
Page 88
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Page 90
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Page 91
ViewSonic Corporation87
Confidential - Do Not Copy VA703b-4_VA703m-4
Page 92
* 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. 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?
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 Corporation88
Confidential - Do Not Copy VA703b-4_VA703m-4
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