Viewsonic VG710bs Service Manual 1a

Service Manual

ViewSonic VG710b/s1

Model No. VLCDS23719-4W
Model No. VLCDS23719-5W

17” Color TFT LCD Display

ViewSonic

(VG710s/b-1_SM_718 Rev. 1a Feb. 2004)



381 Brea Canyon Road, Walnut, California 91789 USA - [phone]

Copyright

Copyright
reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or
computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical,
manual or otherwise, without the prior written permission of ViewSonic Corporation.

Disclaimer

ViewSonic makes no representations or warranties, either expressed or implied, with respect to the
contents hereof and specifically disclaims any warranty of merchantability or fitness for any particular
purpose. Further, ViewSonic reserves the right to revise this publication and to make changes from time
to time in the contents hereof without obligation of ViewSonic to notify any person of such revision or
changes.

Trademarks

Optiquest is a registered trademark of ViewSonic Corporation.
ViewSonic is a registered trademark of ViewSonic Corporation.
All other trademarks used within this document are the property of their respective owners.

2003 by ViewSonic Corporation. All rights reserved. No part of this publication may be

¤

Revision History

Revision Date Description Of Changes Approval

1a 02/26/04 Initial Release DCN-3601 Angela Luh

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TABLE OF CONTENTS

1. Precautions and Safety Notices

2. Specification

3. Front Panel Function Control Description

4. Circuit Description

5. Adjusting Procedure

6. Trouble Shooting Flow Chart

7. Recommended Spare Parts List

8. Exploded Diagram And Spare Parts List

9. Block Diagram

10. Schematic Diagrams

11. PCB Layout Diagrams

1

5
8

11

13

36
40

47
57
58

64

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1. Precautions and Safety Notices

1. Appropriate Operation

(1) Turn off the product before cleaning.
(2) Use only a dry soft cloth when cleaning the LCD panel surface.
(3) Use a soft cloth soaked with mild detergent to clean the display housing.
(4) Use only high quality and safety approved AC/DC power adapter.
(5) Disconnect the power plug from AC outlet if the product is not used for a long period of time.
(6) If smoke, abnormal noise, or strange odor is present, immediately switch the LCD display off.
(7) Do not touch the LCD panel surface with sharp or hard objects.
(8) Do not place heavy objects on the LCD display, video cable, or power cord.
(9) Do not use abrasive cleaners, waxes or solvents for your cleaning.
(10) Do not operate the product under the following conditions:

- Extremely hot, cold or humid environment.

- Areas 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 power converter for this display utilizes AC and DC cords, AC cord is detachable, but DC cord is permanently

attached. Any attempt to replace another adapter could result in serious problem on the display.

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.

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(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:

Only touch the metal frame of the LCD panel or the front
cover of the monitor. Do not touch the surface of the
polarizer.

Incorrect Methods:

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 foreign objects. That 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

1. General Requirements

General Specifications

Test Resolution & Frequency “1280 x 1024” @ 60Hz
Test Image Size Full Size
Contrast and Brightness Controls Factory Default:

Contrast = 50%, Brightness = 100%

2. Signal Interface

Video Interface

Analog Input Connector DB-15 (Analog)
Digital Input Connector DVI-D (Digital)
Default Input Connector Defaults to the first detected input
Video Cable Connector DB-15 Pin out Compliant DDC 1/2B.
Video Signals

Video Impedance 75 Ohms (Analog), 100 Ohms (Digital)
Exclusions Not compatible with interlaced video.

3. Power

Power Supply

External Power Supply Part Number: LSE 0107A1240

Input Voltage Range 90 to 264 VAC
Over Voltage Protection 12.7~18V FULL LOAD

Power Dissipation 36 WATTS (TYP)

4. Electrical Requirements

1. Video RGB (Analog)

2. TMDS (Digital)

Separate Sync

Horizontal / Vertical Frequency

Horizontal Frequency 30 – 82 kHz
Vertical Refresh Rate 50 – 85 HZ
Maximum Pixel Clock 135 MHz
Primary Preset “1280 x 1024” @ 60Hz
Look up table timing
<<Analog>>

1. 640 x 350 @ 70Hz, 31.5kHz

2. 640 x 480 @ 60Hz, 31.5kHz

3. 640 x 480 @ 67Hz, 35.0kHz

4. 640 x 480 @ 75Hz, 37.5kHz

5. 640 x 480 @ 72Hz, 37.9kHz

6. 640 x 480 @ 85Hz, 43.27kHz

7. 720 x 400 @ 70Hz, 31.5kHz

8. 800 x 600 @ 56Hz, 35.1kHz

9. 800 x 600 @ 60Hz, 37.9kHz

10. 800 x 600 @ 75Hz, 46.9kHz

11. 800 x 600 @ 72Hz, 48.1kHz

12. 800 x 600 @ 85Hz, 53.7kHz

13. 832 x 624 @ 75Hz, 49.7kHz

14. 1024 x 768 @ 60Hz, 48.4kHz

15. 1024 x 768 @ 70Hz, 56.5kHz

16. 1024 x 768 @ 72Hz, 58.1kHz

17. 1024 x 768 @ 75Hz, 60.0kHz

18. 1024 x 768 @ 85Hz, 68.67kHz

19. 1280 x 1024 @ 60Hz, 63.4kHz

20. 1280 x 1024 @ 75Hz, 79.97kHz

<<Digital>>
640 x 350 @ 70Hz, 31.5kHz
640 x 400 @ 60Hz, 31.5kHz
640 x 480 @ 60Hz, 31.5kHz
640 x 480 @ 75Hz, 37.5kHz
640 x 480 @ 72Hz, 37.9kHz
640 x 480 @ 85Hz, 43.27kHz
720 x 400 @ 70Hz, 31.5kHz
800 x 600 @ 56Hz, 35.1kHz
800 x 600 @ 60Hz, 37.9kHz
800 x 600 @ 75Hz, 46.9kHz
800 x 600 @ 72Hz, 48.1kHz
800 x 600 @ 85Hz, 53.7kHz
1024 x 768 @ 60Hz, 48.4kHz
1024 x 768 @ 70Hz, 56.5kHz
1024 x 768 @ 72Hz, 58.1kHz
1024 x 768 @ 75Hz, 60.0kHz
1024 x 768 @ 85Hz, 68.67kHz
1280 x 1024 @ 60Hz, 63.4kHz

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Changing Modes

Maximum Mode Change Blank Time for image
stability. Note:

1) Excluding “Auto Adjust” time

2) Under DOS mode (640 x 350, 720 x 400 & 640 x

Under 5 seconds (Maximum)

1 seconds (Typ.) for recognized timings
1-2 seconds (Typ.) for unrecognized timing
.

400), there is no “Auto Adjust” feature.

3) The monitor needs to do “Auto Adjust” the first
time a new mode is detected.

5. Audio

Speaker Specification

Line input connection 3.5 mm stereo jack
Line input signal 1.0 Vrms
Line input impedance 10 kOhm
Maximum power output (Electric) 3 W @ < 5 % DISTORTION
Signal to Noise Ratio 72 dB

Frequency response 400 Hz – 20 kHz

Distortion < 5 % THD (@1kHz),

6. LCD Panel

Panel Characteristics

Panel Type “LG LM170E01-A5”
Type “TFT ACTIVE MATRIX
Active Size 337.9 (H) x 270.3 (V)
Pixel Arrangement RGB Vertical Stripe
Pixel Pitch 0.264 mm
Glass Treatment Anti Glare (Hard coating 3H)
# of Backlights 4 CCFL edge-light (2 top / 2 bottom)
Backlight Life 50,000 Hours (minimum)
Panel Performance
Luminance –
Condition:

250 cd/m
200 cd/m2 (minimum after 30-minute warm-up)

2

(typ. after 30-minute warm-up)

CT = 6500K, Contrast = Max,
Brightness = Max
Brightness Uniformity ∆L5=Max 1.3 ∆L5= Maximum Luminance/

Minimum Luminance
Contrast Ratio 450:1 (typ.), 300:1 (minimum)
Color Depth 16 Million colors (8 bit panel)
Viewing Angle (Horizontal) 140 degrees @ CR>10, 160 degrees @ CR>5
Viewing Angle (Vertical) 120 degrees @ CR>10, 140 degrees @ CR>5
Response Time
10%-90% @ Ta=25°C

16 ms (Tr= 2 ms, Tf = 14 ms) (typ.)

30 ms (Tr= 6 ms, Tf = 24 ms) (maximum)

Note: The 2nd source of LCD panel is “AU M170EN05.”

7. Mechanical

Dimensions

Width 378 mm
Height 405 mm
Depth 177 mm
Depth (Head Only) 50 mm
Monitor Weight 5.3 kg / 11.66 lbs

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Ergonomics

Tilt Up

20 DEGREES MINIMUM

Tilt Down -5 degrees

8. Environmental

Environmental Conditions

Operating Temperature 0°C to +40°C
Storage Temperature -20°C to +60°C
Operating Relative Humidity 20% to 80% RH Non-Condensing
Storage Relative Humidity 5% to 90% RH Non-Condensing
Operating Altitude 0 to +3,000 meters
Storage Altitude 0 to +12,000 meters

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3. Front Panel Function Control Description

1. Control Location

Use the buttons on the front control panel to display and adjust the On View controls which display on the screen.

Decreases or increases
volume

Displays the Main Menu
or exits the control screen
and saves adjustments

Scrolls through menu options and
adjusts the displayed control.
Also a shortcut to display the
Contrast/Brightness adjustment control
screen.

Displays the control screen for
the highlighted control.

Also toggles between two
controls on some screens.

Also a shortcut to toggle
between analog and digital
connections.

Audio Mute button
turns the sound off.

2. OSD Menu Controls

Select the menu items shown below by using the up [▲] and down [▼] buttons.

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Power light
Green = ON
Orange = Power Saving

Power
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Main Menu:

Auto Image Adjust -- adjusts 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.

Color Adjust -- provides several color adjustment modes: preset color temperatures and RGB, which allow you to adjust
red (R), green (G), and blue (B) separately. The factory setting for this product is 6500K (6500 Kelvin).

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.

Manual Image Adjust:

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 the text and/or graphic characters.
NOTE: Try Auto Image Adjust first.

Sharpness -- adjusts the clarity and focus of the screen image.

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Setup Menu:

Language -- allows you to choose the language used in the menus and control screens.

Resolution Notice -- allows you to enable or disable the resolution notice.

OSD Position -- allows you to move the on-screen display menus and control screens.

OSD Timeout -- sets the length of time the on-screen display 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 On/Off -- allows you to turn the On-Screen Display background On or Off.

3. Hot Keys for Function Controls

Buttons: Functions:

[Up] + [Down] arrows recall Contrast or Brightness while in the Contrast

[Volume-] + [Volume+] recall volume to 50% while in volume adjustment,

[1] + [2] toggle 720x400 and 640x400 mode when input

[1] + [Up] + [Down] White Balance. White Balance should set the screen

[1] + [Down] (hold for 10 seconds) Power Lock (Unlock). User won’t be able to turn off

[1] + [Up] (hold for 10 seconds) OSD Lock (Unlock). It will lock all functions,

[Up] + [Down] + [Power On] with signal

(hold for 3 seconds)

[Up] + [Down] + [Power On]

without signal

(hold for 3 seconds)

or Brightness adjustment, or recall both of Contrast
and Brightness when the OSD is not on.

or when OSD is not on.

720x400 or 640x400 mode.

on the pure black and white pattern with
640*480@60Hz resolution.

the monitor.

including “Volume” and “Mute”.
All Mode Reset. It will erase all end users’ settings
and restore the factory defaults.
Burn in Mode. After entering Burn in Mode, press

[1] button, you can find the information about this
monitor.

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4. Circuit Description

1. Power supply (DC/DC Converter)

The AP1501 is monolithic IC designed for M/B DC/DC converter, with the ability of driving a 3A load without any

additional transistor component.

The AP1501 operates at a switching frequency of 150 kHz and thus allows smaller-sized filter components than

would be needed with lower frequency switch regulator.

2. Flash Memory

The Pm39LV010R is a 1 Megabit, 3.3 Volt-only Flash Memory organized as 131,072 bytes of 8 bits each. This device is

designed to use a 3.0 Volt to 3.6 Volt power supply to perform in-system programming.

The 1 Megabit memory array is divided into thirty-two uniform blocks of 4 Kbytes each for data and/or code storage.

The block architecture allows users to flexibly make chip erase or block erase operation. The block erase feature allows a

particular block to be erased and reprogrammed without affecting the data in other blocks. After the device performs chip

erase or block erase operation, it can be reprogrammed on a byte-by-byte basis.

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3. GM5120

The gm5110/20 is a graphic processing IC for Liquid Crystal Display (LCD) monitors at XGA/SXGA resolution. It

provides all key IC functions required for the highest quality LCD monitors. On-chip functions include a high-speed

triple-ADC and PLL, Ultra-Reliable DVI

TM

receiver, a high quality zoom and shrink scaling engine, an on-screen display

(OSD) controller, digital color controls and an on-chip microcontroller (OCM). With this level of integration, the

gm5110/20 devices simplify and reduce the cost of LCD monitors while maintaining a high-degree of flexibility and

quality.

gm5110/5120 System Design Example

4. LVDS (THC63LVDM83A)

The THC63LVDM83A transmitter converts 28 bits of CMOS/TTL data into LVDS (Low Voltage Differential Signaling)

data stream. A phase-locked transmit clock is transmitted in parallel with the data streams over a fifth LVDS link. The

HC63LVDM83A can be programmed for rising edge or falling edge clocks through a dedicated pin. The THC63LVDF84A

receiver converts the LVDS data streams back into 28 bits of CMOS/TTL data with falling edge clock. At a transmit clock

frequency of 85MHz, 24 bits of RGB data and 4 bits of LCD timing and control data (HSYNC, VSYNC, CNTL1, CNTL2)

are transmitted at a rate of 595 Mbps per LVDS data channel.

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5. Adjusting Procedure

1. Function Test

1.1 Product



- 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 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)

1280*1024 (H=79.97kHz, V=75Hz)

1.4 Test Display Modes & Pattern

1.4.1 Compatible Modes

Analog Digital

1. 640 x 350 @ 70Hz, 31.5kHz

2. 640 x 480 @ 60Hz, 31.5kHz

3. 640 x 480 @ 67Hz, 35.0kHz

4. 640 x 480 @ 75Hz, 37.5kHz

5. 640 x 480 @ 72Hz, 37.9kHz

6. 640 x 480 @ 85Hz, 43.27kHz

7. 720 x 400 @ 70Hz, 31.5kHz

8. 800 x 600 @ 56Hz, 35.1kHz

9. 800 x 600 @ 60Hz, 37.9kHz

10. 800 x 600 @ 75Hz, 46.9kHz

11. 800 x 600 @ 72Hz, 48.1kHz

12. 800 x 600 @ 85Hz, 53.7kHz

13. 832 x 624 @ 75Hz, 49.7kHz

14. 1024 x 768 @ 60Hz, 48.4kHz

15. 1024 x 768 @ 70Hz, 56.5kHz

16. 1024 x 768 @ 72Hz, 58.1kHz

17. 1024 x 768 @ 75Hz, 60.0kHz

18. 1024 x 768 @ 85Hz, 68.67kHz

19. 1280 x 1024 @ 60Hz, 63.4kHz

20. 1280 x 1024 @ 75Hz, 79.97kHz

640 x 350 @ 70Hz, 31.5kHz
640 x 400 @ 60Hz, 31.5kHz
640 x 480 @ 60Hz, 31.5kHz
640 x 480 @ 75Hz, 37.5kHz
640 x 480 @ 72Hz, 37.9kHz
640 x 480 @ 85Hz, 43.27kHz
720 x 400 @ 70Hz, 31.5kHz
800 x 600 @ 56Hz, 35.1kHz
800 x 600 @ 60Hz, 37.9kHz
800 x 600 @ 75Hz, 46.9kHz
800 x 600 @ 72Hz, 48.1kHz
800 x 600 @ 85Hz, 53.7kHz
1024 x 768 @ 60Hz, 48.4kHz
1024 x 768 @ 70Hz, 56.5kHz
1024 x 768 @ 72Hz, 58.1kHz
1024 x 768 @ 75Hz, 60.0kHz
1024 x 768 @ 85Hz, 68.67kHz
1280 x 1024 @ 60Hz, 63.4kHz

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1.4.2 Function Test Display Pattern

Item Test Content Pattern Specification Remark

1 Frequency & Tracking Fine Line Moire Eliminate visual wavy noise. Figure 1
2 Contrast/Brightness 16 Gray Scale 16 gray levels should be

Figure 2

distinguishable.

3 Boundary Horizontal & Vertical

Thickness

Horizontal and Vertical position of
video should be adjustable to be

Figure 3

within the screen frame.

4 RGB Color Performance RGB Color Intensities Contrast of each R, G, B, color

Figure 4, 5, 6

should be normal.
5 Screen Uniformity & Flicker Full White Should be compliant with the spec. Figure 7
6 Dead Pixel/Line White Screen & Dark Screen The numbers of dead pixels should

Figure 7, 8

be compliant with the spec.
7 White Balance White & Black Pattern The screen must have the pure white

Figure 9

and black pattern, no other color.

Fine Line Morie Pattern (Figure1) Gray Scale Pattern (Figure2)

Horizontal & Vertical Thickness Pattern (Figure 3) R. Color Pattern (Figure 4)

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G. Color Pattern (Figure5) B. Color Pattern (Figure 6)

Full White Pattern (Figure 7) Dark Screen Pattern (Figure 8)

Black-White Pattern (Figure 9)

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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 restore 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 Ad just”

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: 1280*1024@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: 1280*1024@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

Test Signal: 640*480@60Hz

Test Pattern: White and Black Pattern

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1.5.8 R, G, B, Colors Contrast

Test Signal: 1280*1024@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: 1280*1024@60Hz

Test Pattern: Full White Pattern

- Check and see if it is in normal condition.

1.5.10 Dead Pixel and Line

Test Signal: 1280*1024@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: 10% ND Filter

- Check if the Mura can pass 10% 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.

1.5.13 Check for Secondary Display Modes

Test Signal:

Analog: 640*350@70Hz; 640*480@60/67/72/75/85Hz;

720*400@70Hz; 800*600@56/60/72/75/85Hz;

832*624@75Hz, 1024*768@60/70/72/75/85Hz;

1280*1024@60/75Hz

Digital: 640*350@70Hz; 640*480@60/72/75/85Hz;

720*400@70Hz; 800*600@56/60/72/75/85Hz;

1024*768@60/70/72/75/85Hz; 1152*870@75Hz,

1280*720@60Hz, 1280*1024@60Hz

- Normally when the primary mode 1280*1024@60Hz is well adjusted and compliant with the specification, the

secondary display modes will also 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.

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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.

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

- VG710 Monitor

- Fixture for Firmware Upgrade

- Power Adapter (P/N: 47.58201.001) *1 for Fixture

- VGA Cable (P/N: 42.59901.003) *1(Pin 4, 11 should be connected to GND)

- PC (Personal Computer)

- LPT Cable (P/N: 42.59906.001) *1

- Firmware Upgrade Program

- One additional monitor for checking the program execution

Printer Port

PC VG710

Fixture

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