ViewSonic VS11313 Service Manual

ViewSonic VG921m-2

Model No. VS11313

19” Color TFT LCD Display

(VG921m-2_SM Rev. 1a Jan. 2007)

ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

Service Manual

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Copyright

Copyright © 2007 by ViewSonic Corporation. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of ViewSonic Corporation.

Disclaimer

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

Trademarks

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

Revision History

Revision SM Editing Date ECR Number Description of Changes Editor

1a 12/20/2006 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 6

4. Circuit Description 13

5. Adjustment Procedure 14

6. Troubleshooting Flow Chart 34

7. Block Diagram 36

8. Schematic Diagrams 37

9. PCB Layout Diagrams 47

10. Exploded Diagram and Exploded Parts List 55

11. Recommended Spare Parts List 58

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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, or be applied exemption.

(14) The LCD module is designed so that the CFL in it is supplied by Limited Current Circuit.

Do not connect the CFL in Hazardous Voltage Circuit.

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5.2 Handling and Placing Methods Correct Methods: Incorrect Methods:

1.Take out the monitor with cushions 1.Taking out the monitor by grasping the LCD panel. That may cause ”Mura”

2.Only touch the metal frame of the LCD panel or the

front cover of the monitor. Do not touch the surface of the polarizer.

2.Surface of the LCD panel is pressed by fingers and that may cause ”Mura”.

3.Place the monitor on a clean and soft foam pad. 3.Placing the monitor on foreign objects. That could scratch the surface of the panel or cause “Mura”.

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2. Specification

FEATURES VG921m

Size

19 "

Luminance (Typ)

300 cd/㎡

Contrast Ratio (Typ) *1 700:1

Colors 16.2 M (6 bits + 2 bits FRC)

Response Time *1 8 ms (on/off)

Viewing Angle (H/V) 150 ° / 135 °@ CR ≥ 10

160 ° / 160 °@ CR ≥ 5

TFTLCD PANEL

1st

HSD

HSD190SEN1-A04

Recommend resolution 1280x1024@60Hz

Analog Yes (75ohms, 0.7/1.0 Vp-p)

Input Signal

Digital NO

Separate Sync Yes

Composite Sync Yes

Sync Compatibility

Sync on Green Yes

PC Yes

Compatibility

Power Mac Yes

Power Voltage AC 100-240V, 50/60Hz Yes

On Mode(Max) ≦ 36 W Power

Consumption

Off Mode (Max) ≦1 W

Audio 1.5W / THD 0.5% (Max) Yes

Tilt ( 20 ° - -5 °)

Yes

Swivel No

Pivot No

Ergonomics

Height Adjust No

OSD Control [ 1 ] [ 2 ] [ ] [▼] [▲] [Mute] Yes

Physical (W x H x D) 425.4 mm x 457.7 mm x 205 mm

Dimension

Package (W x H x D) 497 mm x 516 mm x 158 mm

Physical (Net Weight) 5.2Kg (11.5 lbs)

Weight

Package (Gross Weight) 6.8Kg (14.9 lbs) Temperature (℉/℃) 32℉-104℉ / 0℃-40℃

Operating

Condition

Humidity (%) 20 % - 80 % Temperature (℉/℃) -4℉-140℉ / -20℃-60℃

Storage Condition

Humidity (%) 10% - 90 % (no condensation)

Regulation

UL/CUL, FCC (ICES-003B), CB, CE, TCO'03, GS, ERGO(covers

ISO13406-2 & MPRII), IRAM, VCCI, GOST-R, HYGIENIC (20

copies), Energy Star, CCC, BSMI, PSB, C-TICK, SASO, WEEE,

RoHS, Windows Vista Basic

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 Audio Interface (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) 1.2 W / ch Speaker 1.5W / ch (max) Signal to Noise Ratio 50 dB Frequency response 100 Hz – 20 kHz Distortion < 10 % THD (@1kHZ)

Vibration

There should be no audible vibration with volume at 100% and treble / bass at default.

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 should be off when the rest of the

monitor is in power saving.

 Panel Characteristics:

1st Source Panel

Model number HSD190SEN1-A04

Type Active Matrix TFT, TN technology

Active Size 19” (376.32mm x 301.056mm)

Pixel Arrangement RGB Vertical Stripe

Pixel Pitch 0.294 mm

Glass Treatment Anti-Glare, Hard coating (3H)

# of Backlights 4 CCFL

Backlight Life 50000 Hrs (Min)

Luminance (Center) –

CT = 6500K,

Contrast/ Brightness = Max

300 cd/m2 (Typ)

240 cd/m2 (Min)

Brightness Uniformity (13 points) 75 % (Min)

Contrast Ratio 700 :1 (Typ)

450 : 1 (Min)

Color Depth 16.2 million colors (6+2 bit panel)

Horizontal Viewing Angle

150 degrees (Typ) / 130 degrees (Min) @ CR>10

160 degrees (Typ) @ CR>5

Vertical Viewing Angle

135 degrees (Typ) / 110 degrees (Min) @ CR>10

160 degrees (Typ) @ CR>5

Response Time

On-Off

10%-90% @ Ta=25°C 8ms (Typ) / 12ms (Max)

Mercury 3.0 mg per lamp

Panel Defects Please see Panel Quality Specifications.

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ELECTRICAL REQUIREMENT

Horizontal / Vertical Frequency

Horizontal Frequency

24 – 82 kHz

Vertical Refresh Rate

50 – 75 Hz

Maximum Pixel Clock 135 MHz

Sync Polarity Independent of sync polarity

Timing Table

Analog

Item Timing

Separated

Composite

SOG

Digital - TMDS

Remark

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



The image quality might be worse than 640x480@60Hz

5 640 x 480 @ 60 Hz, 31.5 KHz



6

640 x 480 @ 67 Hz, 35 KHz



7 640 x 480 @ 72 Hz, 37.9 KHz



DMT

8 640 x 480 @ 75 Hz, 37.5 KHz



DMT

9 720 x 400 @ 70 Hz, 31.5 KHz



10 800 x 600 @ 56 Hz, 35.1 KHz



DMT

11 800 x 600 @ 60 Hz, 37.9 KHz



DMT

12 800 x 600 @ 72 Hz, 48.1 KHz



DMT

13 800 x 600 @ 75 Hz, 46.9 KHz



DMT

14 832 x 624 @ 75 Hz, 49.7 KHz



MAC

15 1024 x 768 @ 60 Hz, 48.4 KHz



DMT

16 1024 x 768 @ 70 Hz, 56.5 KHz



DMT

17 1024 x 768 @ 75 Hz, 60 KHz



DMT

18 1152 x 864 @ 75 Hz, 67.5 KHz



DMT

19

1152 x 870 @ 75 Hz, 68.7 KHz



For MAC

20 1280 x 720 @ 60 Hz, 45 KHz



DTV

21 1280 x 1024 @ 60 Hz, 64 KHz



DMT

22 1280 x 1024 @ 75 Hz, 80 KHz



DMT

*1. Tolerance ≧ ±2KHz (if no overlapping issue)

*2. Any timing not in the list, it should display as normal or show on “OUT OF RANGE” OSD message without

blanking.

*3. The image quality of 50Hz mode might be worse than 60Hz.

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3. Front Panel Function Control Description

3.1 Front Panel Hardware Controls

Power Switch (Front Head) Power Control, soft Power Switch.

Power LED (Front Head) Green – ON

Orange – Power Saving Mode

Dark = Soft Power Switch OFF

Front Panel Controls (Head)

[

] [ 1 ] [ 2 ] [▲] [▼] [;X]

[;X] Mute

[

] Power

[ 1 ] BUTTON 1

[ 2 ] Button 2

[▲] UP ARROW BUTTON [▼] DOWN 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

3.2 Short Cuts Function from the button(s)

[1] Main Menu

[2] Auto Image Adjust

[▼] Brightness adjust

[▲] Contrast adjust

[▼]+ [▲] recall both of Contrast and Brightness to default

[1] + [2] 1. toggle 720x400@70Hz/640x400@70Hz mode when input one of the two mode

2. toggle 640x480@60Hz/640x400@60Hz mode when input one of the two mode

[1] + [▼] + [▲] White Balance.

*1. Not shown on user’s guide

*2. Recommend resolution = 640x480@60Hz)

[1] + [▼] Power Lock

[1] + [▲] OSD Lock

Signal + [1] + [ ] Factory Mode (include burning mode)

Remark : All the short cuts function are only available while OSD off

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3.3 Function descriptions Main Menu Controls

The Main Menu OSD includes most of control functions.

Please refer to APPENDIX C (Main Menu OSD Table) for the detail. 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.

Note 1: 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 as below

1. Recall white balance to factory setting

2. Set the factory defaults as shown in Section 4-8

3. Clean all the mode setting buffer

4. Execute Auto Image Adjust

Note: Memory Recall should have no effect for Language, Power Lock, User Color Settings or Input Priority

Input Signal Notice Actions

1. The Input Signal Notice OSD appears 3 seconds when power turns on or change input signal.

2. The Input Signal Notice OSD position is on the right-bottom side of image. And the OSD background shall be transparent.

(OSD Background = off).

Resolution Notice Actions

1. Resolution Notice OSD should show on screen after changing to non-native mode for 30 sec

2. For auto input select function, it shall meet the requirement in Appendix D.

3. 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

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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

3.4 Factory Defaults

Item Defaults Item Defaults

Contrast 70% Input Priority N/A

Brightness 100% Resolution Notice On

Color Temperature 6500K Volume 50%

Sharpness 100% Balance N/A

OSD H. Position 50% Treble N/A

OSD V. Position 50% Bass N/A

OSD Time Out 15 720x400 / 640x400 (@70Hz) 720x400

OSD Background On 640x480 / 640x400

(@60Hz)

640x480

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3.5 OSD Menu Controls

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

 Main Menu :

 Auto Image Adjust :

To automatically adjust H./ V. Position, Phase adjust and Clock adjust.

REMARK: There may need to select “Manual Image Adjust” to optimized Performance for various VGA tolerance.

 Contrast / Brightness :

To adjust the Contrast of the video and the backlight currency.

REMARK: 1. These functions setting can be recalled to default by [Up] + [Dn].

2. These functions should be disabled and setting to default in sRGB Mode.

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 Audio Adjust :

To adjust the audio volume and mute.

 Color Adjust :

To select the color temperature sRGB, 9300°K, 7500°K ,6500°K, 5400°K or user color.

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 Information:

To display the data about Horizontal / Vertical frequency, Pixel clock, Resolution , Model number and Serial No. of the

monitor.

 Manual Image Adjust:

Horizontal Size: To adjust the horizontal pixel clock of the video. H./V. Position: To adjust the horizontal and vertical position of the video. Fine Tune: To adjust the delay time of data and clock. Sharpness: To select the picture sharpness of display.

REMARK: This function is available under Native Resolution Mode.

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 Setup Menu:

Language Select: To select one of eight languages.(English, French, German, Spanish, Italian, Finnish, Japanese,

Traditional Chinese, and Simplified Chinese)

Resolution Notice: Enable (on) : OSD will notify the best picture quality resolution change the resolution to 1280 x

1024.

OSD Position: To set OSD position. OSD Timeout: To set the displaying time of OSD ( 5” / 15” / 30” / 60” ). OSD Background: To select video background brightness.

 Memory Recall:

Restore default settings of Clock, H./V. Position, Phase, Contrast, Brightness, Color temperature, OSD position, OSD

timeout and Sharpness, Volume.

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4. Circuit Description

1. Power supply (DC/DC Converter)

This brick convert is the 110-220AC input voltage to 12V AND 5V output for inverter,

audio, panel and system controller use.

It consists of a PWM IC (CM0565R, U101)

2. Scaling controller

The ADC is to convert RGB analog signal to digital signal that scaling chip can

acknowledge.

The HSYNC input receives a logic signal and provides the frequency reference for

pixel clock generation.

The scaling IC is to converts the input signal ranging from VGA to SXGA.

GENERAL DESCRIPTION

The TSUM57AK is a high performance, and fully integrated graphics processing IC solution

for LCD monitors with resolutions up to SXGA. It is configured with an integrated triple-ADC/PLL,

a high quality scaling engine, an on-screen display controller, a built-in output clock generator,

and LVDS display interface. To further reduce system costs, the TSUM57AK also integrates

intelligent power management .

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5. Adjustment Procedure

1. Function Test

1.1 Product

- 19” 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 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=37.5kHz, V=75Hz)

800*600 (H=46.9kHz, V=75Hz)

1024*768 (H=60kHz, V=75Hz)

1280*1024 (H=80kHz, V=75Hz)

1.4 Test Display Modes & Pattern

1.4.1 Compatible Modes

Analog

1. 640 x 480 @ 60Hz, 31.5kHz

2. 640 x 480 @ 67Hz, 35.0kHz

3. 640 x 480 @ 72Hz, 37.9kHz

4. 640 x 480 @ 75Hz, 37.5kHz

5. 720 x 400 @ 70Hz, 31.5kHz

6. 800 x 600 @ 56Hz, 35.1kHz

7. 800 x 600 @ 60Hz, 37.9kHz

8. 800 x 600 @ 72Hz, 48.1kHz

9. 800 x 600 @ 75Hz, 46.9kHz

10. 832 x 624 @ 75Hz, 49.7kHz

11. 1024 x 768 @ 60Hz, 48.4kHz

12. 1024 x 768 @ 70Hz, 56.5kHz

13. 1024 x 768 @ 75Hz, 60.0kHz

14. 1280 x 1024 @ 60Hz, 64.0kHz

15. 1280 x 1024 @ 75Hz, 80.0kHz

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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

distinguishable.

Figure 2

3 Boundary Horizontal &

Vertical Thickness

Horizontal and Vertical position of video should be adjustable to be within the screen frame.

Figure 3

4 RGB Color

Performance

RGB Color Intensities

Contrast of each R, G, B, color should be normal.

Figure 4, 5, 6

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 be compliant with the spec.

Figure 7, 8

7 White Balance White & Black

Pattern

The screen must have the pure white and black pattern, no other color.

Figure 9

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 Patter (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 Memory Recall

You should do “Memory Recall” 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 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 3-2. Short Cuts Function from the

button(s) )

- 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: 1280x1024@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: 1280x1024@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.

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1.5.7 White Balance

Test Signal: 1280x1024@60Hz

Test Pattern: White and Black Pattern

1.5.8 R, G, B, Colors Contrast

Test Signal: 1280x1024@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: 1280x1024@60Hz

Test Pattern: Full White Pattern

- Check and see if it is in normal condition.

1.5.10 Dead Pixel and Line

Test Signal: 1280x1024@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.

1.5.13 Check for Secondary Display Modes

Test Signal : Analog

640*350@70Hz 640*480@60HZ / 75HZ 720*400@70Hz

800*600@60HZ / 75HZ 832*624@75Hz 1024*768@60HZ / 75HZ

1280x1024@75Hz

- Normally when the primary mode 1280x1024@60Hz is well adjusted and compliant

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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 Memory Recall

After final QC step, we have to erase all saved changes again and restore the

factory defaults. You should do “Memory Recall” 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

- VG921m Monitor

- Fixture for Firmware Upgrade

- VGA Cable

- PC (Personal Computer)

- ISP Tool

- Firmware Upgrade Program

- One additional monitor for checking the program execution

 ISP tool instruction

15 pin D-Sub LPT cable

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ISP tool Use 12V adapter

 ISP Download program procedure  Hardware Connect status:

 Version update

1. Check : Monitor model

2. Check : Firmware version

ISP connect method

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Factory Mode : a. Hold on [2] + [ ] with signal (hold for 3 seconds) into the factory mode. b. Press [ ] key exit factory mode.

3. Update final firmware version

Example : ( VG921m follows the same setting procedure )

1. Check : Monitor model : HC154

2. Check : Firmware version : HC154_AL_150MX17A01R30.2 (ps)

3. Update final firmware version : HC154_AL_150MX17A01R30.3

(ps) HC154_AL_150MX17A01R30.2

AL : Analog / LVDS DL : Analog + Digital / LVDS AR : Analog /RSDS DR : Analog + Digital / RSDS

Panel type : 150MX17A01 Firmware version : R30.2

 Change Panel (Version update)

1. Check : Monitor model

2. Check : Firmware version

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Factory Mode : a. Hold on [2] + [ ] with signal (hold for 3 seconds) into the factory mode. b. Press [ ] key exit factory mode.

3. Check : Panel type.

4. Change Panel.

5. Update final firmware version.

6. Update EDID code.

Example : ( VG921m follows the same setting procedure )

1. Check : Monitor model : HC154

2. Check : Firmware version : HC154_AL_150MX17A00R30.2 (ps.1)

3. Check : Panel type : HSD150MX17A00.

4. Change Panel. (ps.2)

(ps.1) HC154_AL_150MX17A00R30.2

AL : Analog / LVDS DL : Analog + Digital / LVDS AR : Analog /RSDS DR : Analog + Digital / RSDS

Panel type : 150MX17A01 Firmware version : R30.2

(ps.2) If change panel : (Form HSD150MX17A00 change to HSD150MX17A01) Panel type : 150MX17A00 => 150MX17A01

Firmware change : HC154_AL_150MX17A00R30.2 =>

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ViewSonic Corporation Confidential - Do Not Copy VG921m-2

HC154_AL_150MX17A01R30.2

5. Update final firmware version : HC154_AL_150MX17A01R30.3

6. Update EDID code : HC154_150MX17A01_EDID_A.txt

 Change Scaler Board (Version update)

1. Check : Monitor model

2. Check : Firmware version

Factory Mode : a. Hold on [2] + [ ] with signal (hold for 3 seconds) into the factory mode. b. Press [ ] key exit factory mode.

3. Change scaler board.

4. Update final firmware version.

5. Update EDID code.

Example : ( VG921m follows the same setting procedure )

1. Check : Monitor model : HC154

2. Check : Firmware version : HC154_AL_150MX17A01R30.2 (ps)

(ps) HC154_AL_150MX17A01R30.2

AL : Analog / LVDS DL : Analog + Digital / LVDS AR : Analog /RSDS DR : Analog + Digital / RSDS

Panel type : 150MX17A01

Firmware version : R30.2

3. Change scaler board.

4. Update final firmware version : HC154_AL_150MX17A01R30.3

5. Update EDID code : HC154_150MX17A01_EDID_A.txt

 Mstar scaler ISP function

1. Enforce Mstar ISP_Tool program.

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ViewSonic Corporation Confidential - Do Not Copy VG921m-2

2. After Enforcing Mstar ISP_Tool Program, open Utility Window.

3. Enforce Mstar ISP Utility Window's Connect function, and Device Type's Dialog window will be opened ,then press "Sure " on Dialog window.

4. Enforce Mstar ISP Utility window’s Read function.

5. Choose the path and the file of Binary code.

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ViewSonic Corporation Confidential - Do Not Copy VG921m-2

6. Choose the path and file of Binary code ,and Program Bin Ready Dialog window will

be opened, then press "Sure" on Dialog window.

7. Enforce Mstar ISP "Auto" function of Utility window.

8. Enforce Mstar ISP Utility window "Run" and write in the data .

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ViewSonic Corporation Confidential - Do Not Copy VG921m-2

9. After writing in the dat a , Enforce Dis Connect function of Mst ar ISP Utility window and

the burn in procedure will be completed.

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ViewSonic Corporation Confidential - Do Not Copy VG921m-2

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.

Equipment Needed

- VG921m Series Monitor

- DDC Card

- PC

- RS232 cable

- VGA Cable or DVI Cable

DDC Card (D8330)

RS-232 Cable VGA Cable Step 1 : Select VG921m in Working Model column to show EDID data on left.

Example : VX1935wm ( VG921m follows the same setting procedure )

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ViewSonic Corporation Confidential - Do Not Copy VG921m-2

Step 2 : Modify the column of Week of Manufacture and Year of Manufacture and ID serial

Number then press “2B” button for changing serial number data.

Example : VX1935wm ( VG921m follows the same setting procedure )

Step 3 : You will see the result as follows.

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ViewSonic Corporation Confidential - Do Not Copy VG921m-2

 Packing For Shipping And Disassembly Procedure

Packing For Shipping

1. Packing Procedure

1.1 Put the monitor in the PE bag and seal the bag with tape. (Figure 1 ~ 2)

(Figure 1) (Figure 2)

1.2 Put the cushions on the monitor. (Figure 3) 1.3 Put the Cables in the PE bag. (Figure 4)

(Figure 3) (Figure 4)

1.4 Place the monitor into the carton and then put all the accessories into the carton. At last,

close the carton and seal it with tape. (Figure 5 ~ 6)

(Figure 5) (Figure 6)

D-Sub cable Power cord Audio cable

Base short side turn upward

Panel side forward

Power Cord / Audio Cable

D-Sub Cable

User’s manual / Warranty card/ CD package

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ViewSonic Corporation Confidential - Do Not Copy VG921m-2

2. Disassembly Procedure

1. Remove the base cover. 2. Remove the hinge cover.

3. Unfasten 4 pcs of screws to remove base.

4. Unfasten 4 pcs of screws with back cover.

5. Separate the Cover from the bottom of the Housing by using a Flat tool to remove back cover.

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ViewSonic Corporation Confidential - Do Not Copy VG921m-2

6. Disconnect the cables of Power-Key board and remove it.

7. Unfasten 2 pcs of screws to remove right speaker.

8. Unfasten 2 pcs of screws to remove left speaker.

9. Tear off the tape.

10. Unfasten 2 pcs of screws to remove key board.

11. Pull and open the fixed support to remove Front Bezel.

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ViewSonic Corporation Confidential - Do Not Copy VG921m-2

12. Disconnect the cables of P/I/A board.

13. Tear off the tape with the Shielding.

14. Unfasten 5 pcs of screws with Shielding.

15. Disconnect the cables of P/I board.

16. Disconnect the cables of D-Sub. 17. Unfasten 8 pcs of screws to remove P/I/A board.

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ViewSonic Corporation Confidential - Do Not Copy VG921m-2

18. Disconnect the cables of P/I/A

board.

19. Set the short pin before changing new P/I/A board.

20. Unfasten 5 pcs of screws to remove

D-Sub board.

21. Disconnect the cables of D-Sub board.

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ViewSonic Corporation Confidential - Do Not Copy VG921m-2

6. Troubleshooting Flow Chart

Q1

Q2

Q3

Q4

NO POWER

Please check if power cable is connected properly

Change P/I/A board (ps)

YES

NO

Please reconnect power cable

NO DISPLAY

Please check if signal cable is connected properly

Change Panel

Please reconnect signal cable

YES

NO

Display panel have horizontal line or vertical line

Please change panel

The backlight is OFF

Please check inverter wire if properly connected

1

2

Please change panel or P/I/A board (ps)

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ViewSonic Corporation Confidential - Do Not Copy VG921m-2

Q5

Q6

Q7

(ps) : P/I/A board  Power/Inverter/Audio board

Display panel have block bar

Please change

Display panel with missing color

Please check signal cable if connected properly and check all pins are good without bent

1

Please check if panel wire is loose connection or not

2

Please change panel

3

Audio output error

Please change P/I/A board (ps)

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ViewSonic Corporation Confidential - Do Not Copy VG921m-2

7. Block Diagram

AC INPUT 100V~240V

SW Power 12V 5V

AUDIO U501 TDA7496

SPEAKER

+5V

SCALAR U401 TSUM57AK

INVERTER MP 1038EY

DC-DC U301 G1117-33

1.8V

PANEL DISPLAY

AUDIO INPUT CN501

H、SYNC V、SYNC

BL_EN BL-BRIGHT

R、G、 BINPUT

H、V SYNC VGA D-SUB SCL、SDA VGA 5V

CONN CN4

EEPROM U1 AT24C16N-10SC-2. 7

DDC U6 AT24C02

OSC 12M

Y1

Flash U402 SST25VH010

DC-DC U3 AIC1084-33PM

3.3V

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ViewSonic Corporation Confidential - Do Not Copy VG921m-2

8. Schematic Diagrams

Model

Title

Date Rev:

ViewSonic Corporation

SD

VDD12

SD

R200

0Ω 1/16W

C213 10uF/16V

C206

0.1uF

COMP

1

FB

2

SHDN

3

GND4LX

5

IN

6

FREQ

7

SS

8

U200

AAT1102

R203

0Ω 1/16W

C202 10u/NC

C200

10uF/16V

R211

10KΩ 1/16W

312

Q212 MMBT3904

2

3

1

D201 BAT54SPT

R202

0Ω 1/16W

1 2

D23

5.6V

R214 110k 1%

C217

18pF

C223

0.47uF/25V

R210

10KΩ 1/16W

C203

0.1uF/16V

3

1

2

Q211 MMBT3904

R526

0Ω 1/16W

1 2

D105

SSM5818SPT

R215

0/NC

R213

39.2k 1%

C211

0.22uF/25V

C224

2.2u

C204

0.1uF/16V

1

3 2

Q209 MMBT3906

C221

0.47uF/25V

R209 56KΩ 1/16W

2

3

1

D215 BAT54SPT

R205

11.5k 1%

C212

0.22uF/25V

R212

24KΩ 1/16W

C225

0.1u/NC

C218 NC

R208

56KΩ 1/16W

1 2

D208 CHPT521S-30

C219

0.0022uF

C227 10uF/16V

C207

1uF

C210

0.22uF/25V

R527

33k/NC

C226

220p/NC

C222

0.1uF/16V

3

1

2

Q213 MMBT3904

R206 75KΩ 1/16W

1 2

D207 CHPT521S-30

OUT

1

VDD

2

GND3NC

4

CD

5

U202

S-80924LMC-G6U-T2G/NC

C208

1uF

2

3

1

D204 BAT54SPT

C220

0.068uF/16V

C205

0.1uF/16V

R216 0Ω 1/16W

C209

1uF

L200

LK.CD032.A01

R201 0Ω 1/16W

12

D214

6.2V

+

C228

100uF/16V

R207

1KΩ 1/16W

1

32

Q210

MMBT3906

R204

100KΩ 1/16W

GND

VDD+12

VGH

VGL

VCC

VDD+5

XAO

VDDA:+12V

VGH: 23.5V

VGL: -6V

TP1

38

ViewSonic Corporation Confidential - Do Not Copy VG921m-2

Model

Title

Date Rev:

ViewSonic Corporation

VDD+12

V1

V0

V5 V8 V12 V13

VGMA0 VGMA1

VGMA8

VGMA5

VGMA12 VGMA13

VCOM

VGMA0

VGMA4

VGMA10

VGMA7

VGMA13

VGMA6

VGMA11

VGMA5

VGMA3

VGMA9

VGMA2

VGMA8

VGMA12

VGMA1

TP155

TP152

C418

0.1uF/16V

VDD

1

OUT1

2

OUT2

3

OUT3

4

OUT4

5

OUT5

6

OUT6

7

NC

8

NC

13

IN6

14

IN5

15

IN3

17

IN4

16

IN2

18

IN1

19

VDD

20

OUTCOM

9

GND

10

INCOM

12

GND

11

U400

BUF07703

C411 NC

C414

0.1uF/16V

TP148

R400

0Ω 1/16W

TP159

TP149

TP154

TP147

TP160

TP153

+

C400

47uF/16V

TP162

TP145

C412

2.2u/NC

R406

20KΩ 1/16W

R528

10KΩ 1/16W

GND

1

GND

2

GND

3

VDD

4

VDD

5

NC

6

STV

7

STV2

8

CPV

9

OE

10

NC

11

VGH

12

NC

13

VGL

14

NC

15

VGC

16

XAO

17

VCOM

18

VCOM

19

GND

20

GND

21

GND

22

GND

23

GND

24

GND

25

GND

26

CN5

AF724L-N2GIZ

C406

0.1uF/16V

TP161

TP146

C403

10uF/16V

C405

0.1uF/16V

TP151

TP157

13

2

VR1

TMC3K-B10K-TR

TP150

C404

10uF/16V

C413 10u/NC

C140 NC

TP156

C415

0.1uF/16V

TP163

R404

10KΩ 1/16W

R405

30.1k

TP158

C408 NC

C416

0.1uF/16V

TP164

GND

GNDGND

GND

GNDGNDGNDGND

VDD+12

VCC VGLVGH

VCOM

XAO

OE

CPV

STV1

VGMA[0..13]

VCOM: 4~6V

VGMA3

VGMA9

V0

V1

VGMA2

VGMA4

V5 V8

VGMA10

VGMA11

V12VDD+12

VDD+12

VGMA6

VGMA7

V13

R420

39 1%

C433

0.1u

C423

0.1u

R402

0

C434

0.1u

R441

93.1 1%

C420

0.1u

C424

0.1u

R448

39 1%

R413

NC

C435

0.1u

R445

21 1%

C407 10u

R446

21 1%

R415

NC

R422

11 1%

C425

0.1u

R417

NC

C431

0.1u

R419

46.4 1%

C427

0.1u

C419 NC

R421

NC

C430

0.1u

R444

27.4 1%

R439

14.3 1%

C426

0.1u

R414

NC

C432

0.1u

R443

27.4 1%

R440

15 1%

C421

0.1u

C428

0.1u

R423

6.2 1%

R401

NC

R418

NC

R447

39.2 1%

R403

6.2 1%

C429

0.1u

C422

0.1u

R442

91 1%

R416

NC

GND

1206

TP2

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ViewSonic Corporation Confidential - Do Not Copy VG921m-2

Model

Title

Date Rev:

ViewSonic Corporation

B_D0

B_D15

B_D5

B_D4

B_D8

B_D1

B_D9

VCOM

B_D17

POL

STH5-6

LP

INV

LPC

B_D17

POL

VGMA12

STH6-7 STH7-8

LP

INV

VGMA11

VGMA13

VGMA4

VGMA10

VGMA0

INV

LP

VGMA7

VCOM

VGMA5

VGMA11

LPC

VGMA2

VGMA8

MODEMODE

VGMA7

POL

VCOM

VCOMVCOM

VCOM

STH7-8STH6-7STH5-6

B_D19

B_D7

VDDA2VDDA2

VDDB2

VDDB2VDDB2

VDDA2

VDDB2 VDDB2

LPC

VDDA2

B_D9

B_D4 B_D4

B_D2

B_D14

B_D12

B_D6

B_D11

B_D10

B_D8

B_D1

B_D5

B_D19

B_D15

B_D13

B_D8

B_D14

B_D6

B_D17

B_D19

B_D18

B_D3

B_D13

B_D1

B_D2B_D2

B_D0

B_D6

B_D5

B_D7

B_D15

B_D11

B_D8

B_D1

B_D12

B_D16

B_D7B_D7

B_D4

B_D16

B_D5

B_D6

B_D3

B_D11

B_D8

B_D14

B_D15B_D15

B_D10

B_D1

B_D14

B_D16

B_D5

B_D18

B_D9

B_D12

B_D19

B_D7

B_D3

B_D11

B_D13

B_D10

B_D3

B_D12

B_D18

B_D3

B_D4

B_D0

B_D17

B_D10

B_D2

B_D16

B_D6

B_D17

B_D9

B_D0B_D0

B_D2

B_D10

B_D9

B_D12

B_D13

B_D18

B_D16

B_D14

B_D11

B_D13

VGMA7

VGMA11

VGMA3

VGMA1

VGMA13VGMA13

VGMA6

VGMA0

VGMA2

VGMA8

VGMA10

VGMA9

VGMA12

VGMA1

VGMA4 VGMA5

VGMA2

VGMA9

VGMA5

VGMA7

VGMA11

VGMA10

VGMA0

MODE

VGMA6

VGMA3

VGMA8

VGMA4

VGMA12

VGMA10

VGMA6

VGMA3

VGMA12

VGMA1

VGMA0

VGMA4

VGMA9

VGMA5

VGMA13

VGMA6

VGMA3

VGMA1 VGMA2

VGMA8 VGMA9

TP60

7S1

TP70

R172

100Ω 1/16W

C536

0.1uF/16V

5S480

R164

100Ω 1/16W

TP123

TP2

1

TP2

2

COM2

3

COM2

4

COM2

5

NC

6

S1

7

STHR

8

D00N

9

D00P

10

VSS1

11

D01N

12

D01P

13

VSS1

14

D02N

15

DO2P

16

VSS1

17

INV

18

POL

19

STB

20

VSS1

21

CLKN

22

CLKP

23

Osel

24

VSS1

25

MODE

26

V0

27

V1

28

V2

29

V3

30

V4

31

V5

32

V6

33

VSS2

34

VSS2

35

NC

36

VDD2

37

VDD2

38

V7

39

V8

40

V9

41

V10

42

V11

43

V12

44

V13

45

R/L

46

LPC

47

VDD1

48

VDD1

49

NC

50

VSS1

51

D10N

52

D10P

53

VSS1

54

D11N

55

D11P

56

VSS1

57

D12N

58

D12P

59

VSS1

60

D20N

61

D20P

62

VSS1

63

D21N

64

D21P

65

VSS1

66

D22N

67

D22P

68

STHL

69

S480

70

NC

71

COM1

72

COM1

73

COM1

74

TP1

75

TP1

76

X5

X_IC

TP126

C530

0.1uF/16V

R165

100Ω 1/16W

TP54

TP130

TP65

TP144

TP172

TP55

C532

0.1uF/16V

TP58TP51

6S1

R166

100Ω 1/16W

TP142

TP140

TP61 TP67

C534

0.1uF/16V

TP69

TP122

TP138

TP136

R167

100Ω 1/16W

TP2

1

TP2

2

COM2

3

COM2

4

COM2

5

NC

6

S1

7

STHR

8

D00N

9

D00P

10

VSS1

11

D01N

12

D01P

13

VSS1

14

D02N

15

DO2P

16

VSS1

17

INV

18

POL

19

STB

20

VSS1

21

CLKN

22

CLKP

23

Osel

24

VSS1

25

MODE

26

V0

27

V1

28

V2

29

V3

30

V4

31

V5

32

V6

33

VSS2

34

VSS2

35

NC

36

VDD2

37

VDD2

38

V7

39

V8

40

V9

41

V10

42

V11

43

V12

44

V13

45

R/L

46

LPC

47

VDD1

48

VDD1

49

NC

50

VSS1

51

D10N

52

D10P

53

VSS1

54

D11N

55

D11P

56

VSS1

57

D12N

58

D12P

59

VSS1

60

D20N

61

D20P

62

VSS1

63

D21N

64

D21P

65

VSS1

66

D22N

67

D22P

68

STHL

69

S480

70

NC

71

COM1

72

COM1

73

COM1

74

TP1

75

TP1

76

X6

X_IC

TP56

TP125

TP2

1

TP2

2

COM2

3

COM2

4

COM2

5

NC

6

S1

7

STHR

8

D00N

9

D00P

10

VSS1

11

D01N

12

D01P

13

VSS1

14

D02N

15

DO2P

16

VSS1

17

INV

18

POL

19

STB

20

VSS1

21

CLKN

22

CLKP

23

Osel

24

VSS1

25

MODE

26

V0

27

V1

28

V2

29

V3

30

V4

31

V5

32

V6

33

VSS2

34

VSS2

35

NC

36

VDD2

37

VDD2

38

V7

39

V8

40

V9

41

V10

42

V11

43

V12

44

V13

45

R/L

46

LPC

47

VDD1

48

VDD1

49

NC

50

VSS1

51

D10N

52

D10P

53

VSS1

54

D11N

55

D11P

56

VSS1

57

D12N

58

D12P

59

VSS1

60

D20N

61

D20P

62

VSS1

63

D21N

64

D21P

65

VSS1

66

D22N

67

D22P

68

STHL

69

S480

70

NC

71

COM1

72

COM1

73

COM1

74

TP1

75

TP1

76

X7

X_IC

TP52

TP134

8S480

C529

0.1uF/16V

TP128

R168

100Ω 1/16W

TP129

6S480

TP2

1

TP2

2

COM2

3

COM2

4

COM2

5

NC

6

S1

7

STHR

8

D00N

9

D00P

10

VSS1

11

D01N

12

D01P

13

VSS1

14

D02N

15

DO2P

16

VSS1

17

INV

18

POL

19

STB

20

VSS1

21

CLKN

22

CLKP

23

Osel

24

VSS1

25

MODE

26

V0

27

V1

28

V2

29

V3

30

V4

31

V5

32

V6

33

VSS2

34

VSS2

35

NC

36

VDD2

37

VDD2

38

V7

39

V8

40

V9

41

V10

42

V11

43

V12

44

V13

45

R/L

46

LPC

47

VDD1

48

VDD1

49

NC

50

VSS1

51

D10N

52

D10P

53

VSS1

54

D11N

55

D11P

56

VSS1

57

D12N

58

D12P

59

VSS1

60

D20N

61

D20P

62

VSS1

63

D21N

64

D21P

65

VSS1

66

D22N

67

D22P

68

STHL

69

S480

70

NC

71

COM1

72

COM1

73

COM1

74

TP1

75

TP1

76

X8

X_IC

TP57

TP132

TP143

C531

0.1uF/16V

5S1

L503 B0603/0

C555

0.1uF/16V

TP53

R169

100Ω 1/16W

8S1

L502 B0603/0

TP139

C554

0.1uF/16V

TP121

C533

0.1uF/16V

C556

0.1uF/16V

TP124

TP141

R170

100Ω 1/16W

TP68TP62

TP135

TP127

C535

0.1uF/16V

TP63

TP137

C557

0.1uF/16V

7S480

C560

0.1u/NC

C561

0.1u/NC

TP131

R171

100Ω 1/16W

C559

0.1u/NC

TP64TP5 9

C558

0.1u/NC

R163

100Ω 1/16W

TP66

TP133

GND GND GNDGND

GND

GND GND

VCC VDD+12

STH_B

VCOM

B_D[0..19]

INV POL LP

VGMA[0..13]

MODE

LPC

40

ViewSonic Corporation Confidential - Do Not Copy VG921m-2

Model

Title

Date Rev:

ViewSonic Corporation

F_D12

F_D17

F_D10

F_D3

F_D18

F_D8

F_D2

F_D4

F_D1

F_D9

F_D16

F_D13

F_D15

F_D19

F_D14

F_D0

F_D11

F_D0 F_D1

F_D3

F_D2

F_D4

VGMA1

VGMA0

VGMA3

VGMA2

VGMA4 VGMA5

MODE

VGMA6

INV

F_D18 F_D19

VGMA7

VDDA1

VGMA8 VGMA9 VGMA10

VGMA13

VGMA12

LPC

VDDB1

VGMA11

F_D8 F_D9

F_D11

F_D10

F_D13

F_D14 F_D15

F_D12

F_D17

F_D16

VCOM

F_D8

F_D1

F_D12

LP

VDDB1

F_D2 F_D3

F_D14

F_D6

MODE

F_D17

F_D0

F_D19

INV

F_D7

VDDA1

VCOM

F_D13

F_D18

F_D9

F_D10

LPC

F_D5

F_D16

F_D15

F_D11

F_D4

POL

VCOM

F_D19

MODE

F_D8

F_D1

F_D12

LP

F_D4

VCOM

F_D3

VDDB1

F_D2

F_D10

F_D3

F_D14

F_D6

MODE

F_D17

F_D12

F_D15

F_D0

F_D1

F_D19

F_D13

VDDB1

F_D6

INV

VDDA1

F_D14

F_D7

VDDA1

F_D18

VCOM

F_D13

F_D18

F_D9

F_D7

F_D10

F_D9

LPC

F_D5

LPC

POL

F_D16

F_D2

F_D5

F_D8

VCOM

F_D15

INV

F_D17

F_D0

F_D16

F_D11 F_D11

F_D4

POL

LP

STH1-2

STH1-2 STH2-3

STH2-3

STH3-4

VCOM

VDDB1 VDDA1

MODE LPC INV

F_D6

F_D7

F_D5

F_D6

VGMA2

VGMA9

VGMA5

VGMA0

VGMA10

VGMA13

VGMA4

VGMA3

VGMA8

VGMA11

VGMA1

VGMA12

VGMA7

VGMA6

VGMA2

VGMA9

VGMA5

VGMA0

VGMA10

VGMA13

VGMA4

VGMA3

VGMA8

VGMA11

VGMA1

VGMA12

VGMA7

VGMA6

VGMA2

VGMA9

VGMA5

VGMA0

VGMA10

VGMA13

VGMA4

VGMA3

VGMA8

VGMA11

VGMA1

VGMA12

VGMA7

VGMA6

TP105

TP117

TP110

TP40

C552

0.1u/NC

TP112TP111

C544

0.1uF/16V

R151

100Ω 1/16W

TP114

TP33TP26

TP22

1S1

C548

0.1uF/16V

C550

0.1u/NC

TP38

2S480

C545

0.1uF/16V

TP36

TP2

1

TP2

2

COM2

3

COM2

4

COM2

5

NC

6

S1

7

STHR

8

D00N

9

D00P

10

VSS1

11

D01N

12

D01P

13

VSS1

14

D02N

15

DO2P

16

VSS1

17

INV

18

POL

19

STB

20

VSS1

21

CLKN

22

CLKP

23

Osel

24

VSS1

25

MODE

26

V0

27

V1

28

V2

29

V3

30

V4

31

V5

32

V6

33

VSS2

34

VSS2

35

NC

36

VDD2

37

VDD2

38

V7

39

V8

40

V9

41

V10

42

V11

43

V12

44

V13

45

R/L

46

LPC

47

VDD1

48

VDD1

49

NC

50

VSS1

51

D10N

52

D10P

53

VSS1

54

D11N

55

D11P

56

VSS1

57

D12N

58

D12P

59

VSS1

60

D20N

61

D20P

62

VSS1

63

D21N

64

D21P

65

VSS1

66

D22N

67

D22P

68

STHL

69

S480

70

NC

71

COM1

72

COM1

73

COM1

74

TP1

75

TP1

76

X3

X_IC

TP108

R152

100Ω 1/16W

TP39

C551

0.1u/NC

TP24

TP166

C549

0.1uF/16V

TP100

TP27 TP32

R153

100Ω 1/16W

TP37

C538

0.1uF/16V

TP25 TP31

4S1

TP167

C546

0.1uF/16V

TP171

R154

100Ω 1/16W

TP35

R524 NC

TP106

TP104

TP168

C539

0.1uF/16V

R501

1KΩ 1/16W

C547

0.1uF/16V

TP30

R525 NC

R155

100Ω 1/16W

R523 NC

TP170

TP98

TP29

TP103

C540

0.1uF/16V

R500

1KΩ 1/16W

TP169

R156

100Ω 1/16W

2S1

TP23

TP41

TP120

TP109

1S480

TP107

TP28

C541

0.1uF/16V

R502

1KΩ 1/16W

TP97

TP102

4S480

R157

100Ω 1/16W

TP34

TP2

1

TP2

2

COM2

3

COM2

4

COM2

5

NC

6

S1

7

STHR

8

D00N

9

D00P

10

VSS1

11

D01N

12

D01P

13

VSS1

14

D02N

15

DO2P

16

VSS1

17

INV

18

POL

19

STB

20

VSS1

21

CLKN

22

CLKP

23

Osel

24

VSS1

25

MODE

26

V0

27

V1

28

V2

29

V3

30

V4

31

V5

32

V6

33

VSS2

34

VSS2

35

NC

36

VDD2

37

VDD2

38

V7

39

V8

40

V9

41

V10

42

V11

43

V12

44

V13

45

R/L

46

LPC

47

VDD1

48

VDD1

49

NC

50

VSS1

51

D10N

52

D10P

53

VSS1

54

D11N

55

D11P

56

VSS1

57

D12N

58

D12P

59

VSS1

60

D20N

61

D20P

62

VSS1

63

D21N

64

D21P

65

VSS1

66

D22N

67

D22P

68

STHL

69

S480

70

NC

71

COM1

72

COM1

73

COM1

74

TP1

75

TP1

76

X2

X_IC

3S1

TP2

1

TP2

2

COM2

3

COM2

4

COM2

5

NC

6

S1

7

STHR

8

D00N

9

D00P

10

VSS1

11

D01N

12

D01P

13

VSS1

14

D02N

15

DO2P

16

VSS1

17

INV

18

POL

19

STB

20

VSS1

21

CLKN

22

CLKP

23

Osel

24

VSS1

25

MODE

26

V0

27

V1

28

V2

29

V3

30

V4

31

V5

32

V6

33

VSS2

34

VSS2

35

NC

36

VDD2

37

VDD2

38

V7

39

V8

40

V9

41

V10

42

V11

43

V12

44

V13

45

R/L

46

LPC

47

VDD1

48

VDD1

49

NC

50

VSS1

51

D10N

52

D10P

53

VSS1

54

D11N

55

D11P

56

VSS1

57

D12N

58

D12P

59

VSS1

60

D20N

61

D20P

62

VSS1

63

D21N

64

D21P

65

VSS1

66

D22N

67

D22P

68

STHL

69

S480

70

NC

71

COM1

72

COM1

73

COM1

74

TP1

75

TP1

76

X4

X_IC

TP113

TP119

TP116

C542

0.1uF/16V

TP99

R158

100Ω 1/16W

R149

100Ω 1/16W

TP101

TP2

1

TP2

2

COM2

3

COM2

4

COM2

5

NC

6

S1

7

STHR

8

D00N

9

D00P

10

VSS1

11

D01N

12

D01P

13

VSS1

14

D02N

15

DO2P

16

VSS1

17

INV

18

POL

19

STB

20

VSS1

21

CLKN

22

CLKP

23

Osel

24

VSS1

25

MODE

26

V0

27

V1

28

V2

29

V3

30

V4

31

V5

32

V6

33

VSS2

34

VSS2

35

NC

36

VDD2

37

VDD2

38

V7

39

V8

40

V9

41

V10

42

V11

43

V12

44

V13

45

R/L

46

LPC

47

VDD1

48

VDD1

49

NC

50

VSS1

51

D10N

52

D10P

53

VSS1

54

D11N

55

D11P

56

VSS1

57

D12N

58

D12P

59

VSS1

60

D20N

61

D20P

62

VSS1

63

D21N

64

D21P

65

VSS1

66

D22N

67

D22P

68

STHL

69

S480

70

NC

71

COM1

72

COM1

73

COM1

74

TP1

75

TP1

76

X1

X_IC

TP115

C553

0.1u/NC

C543

0.1uF/16V

R150

100Ω 1/16W

TP118

3S480

GND GND GND GND

GND GND

GND

GNDGND GND GND

GND

GND GND

GND GND GND

VDD+12VCC

VCC VCC VCC

STH_F

VCOM

MODE LPC INV

F_D[0..19]

VGMA[0..13]

POL LP

Charge sharing setting(Low : Enable)

Low Power Control(Hi : Enable)

Data pol (Low : Disable)

R56

0

R53

0

41

ViewSonic Corporation Confidential - Do Not Copy VG921m-2

Model

Title

Date Rev:

ViewSonic Corporation

BK_EN

VOLUME

LED_G

LED_B

SW3_POWER

SW5_MENU

STBY

SW4_VOL+

MUTE

BL_ON/OFF

BL_ADJ

BK_PWM

STBY

MUTE

BL_ON/OFF

BL_ADJ

SW1_AUTO

SW2_VOL-

R541 1KΩ 1/16W

C49

0.1uF/16V

+

C40

100uF/16V

R55 0Ω 1/16W

C301

10uF/16V

R301 0Ω 1/16W

C302

0.1uF/16V

C35

0.1uF/16V

R174 NC

R59 10KΩ 1/16W

R46 4.7KΩ 1/16W

C303

10uF/16V

R39 22Ω 1/16W

R302

0Ω 1/16W

Q17 PMBS3904

+

C31 47uF/16V

R40 47Ω 1/16W

R50

NC

C36

0.1uF/16V

R54 NC

C47

0.1uF/16V

R41 22Ω 1/16W

Q1 NC

R49 4.7KΩ 1/16W

C37

0.1uF/16V

R476 10KΩ 1/16W

R51

10KΩ 1/16W

Q16 PMBS3904

Q3 AO3401

R45 NC

R542 NC

C38

0.1uF/16V

R57

51KΩ 1/16W

R543 4.7KΩ 1/16W

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

CN3

CONN

C164

0.1uF/16V

C39

0.1uF/16V

D401

3.6V

R58

4.7KΩ 1/16W

C165

1uF/16V

R538 NC

C30

0.1uF

R303

10KΩ 1/16W

VIN

3

GND

1

VOUT

2

VOUT

4

U301

G1117-33

R544 4.7KΩ 1/16W

Q4 PMBS3904

R477 10KΩ 1/16W

C41

0.1uF/16V

C45

0.1uF/16V

R537 1KΩ 1/16W

R540

4.7KΩ 1/16W

D402

3.6V

C48

10uF/16V

C32

0.1uF

VIN

3

GND

1

VOUT

2

U3

AIC1084-33PM

C33

0.1uF/16V

R38 100Ω 1/16W

C46

0.1uF/16V

R47

NC

R48 NC

C34

0.1uF/16V

Q2

NC

3.3V5V

5V

VDD+5

5V

GND

GNDGND

GND GND

GND

VCC

VDD+5

GND

5V

GND

5V

GND

5V

VOLUME

PWR_LEDG

PWR_LEDB

PWR_EN

AMP_MUTE

AMP_STBY

BL_EN

BL_BRIGHT

PWR

SW4_VOL+

SW5_MENU

F1

ERBSE2R00U

R6 0Ω 1/16WC1NC

GND

R9

0Ω 1/16W

C2 NC

GND

TP3

L4 NC

C53 NC

GND

42

ViewSonic Corporation Confidential - Do Not Copy VG921m-2

Model

Title

Date Rev:

ViewSonic Corporation

DB_R+

DB_B+

DB_G+

DDC_SCL

VGA_CONN

DB_B-

DDC_SCL

DDC_SDA

24C02_WP

DDC_SDA

VGA_HS

VGA_VS

DB_G-

DB_R-

DB_B+

DDC_VDD

VGA_HS

DB_R+

DB_R-

DB_G+

VGA_VS

DDC_SDA

VGA_CONN

DB_G-

DDC_SCL

DB_B-

C56

220pF

R66

75Ω 1/16W

R64 100Ω 1/16W

3

1

2

D14

BAV99

C148 NC

FB7

120ohm

D15UDZS5.6B

R184

4.7KΩ 1/16W

A0

1

A1

2

A2

3

GND4SDA

5

SCLK

6

WP

7

VCC

8

U6 AT24C02

R67 100Ω 1/16W

R65 56Ω 1/16W

R71

4.7KΩ 1/16W

R73 1KΩ 1/16W

D16UDZS5.6B

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

CN4

CONN

R179

4.7KΩ 1/16W

FB3

60ohm

R74

2.2KΩ 1/16W

R68 56Ω 1/16W

R60 56Ω 1/16W

FB4

60ohm

D17 UDZS5.6B

C51

0.22uF

D24 BAV70

3

1

2

D10

BAV99

FB5

60 ohm

3

1

2

D6

BAV99

R61

75Ω 1/16W

C230

0.1uF

D8 UDZS5.6B

R178

4.7KΩ 1/16W

R70 1KΩ 1/16W

D7 UDZS5.6B

C231

0.1uF

R62 100Ω 1/16W

D9 UDZS5.6B

R69

75Ω 1/16W

R181 100Ω 1/16W

D11

UDZS5.6B

R72 100Ω 1/16W

C146 NC

R180 100Ω 1/16W

R63 1KΩ 1/16W

C55

33pF

D18 NC/UDZS5.6B

R75

2.2KΩ 1/16W

C149

0.1uF/16V

C50

0.22uF

C52

0.22uF

C147 NC

DDC_VDD

GND

DDC_VDD

5V

VGA-VDD

GND

5V

GND

VGA_DET

DDC_SDA

DDC_SCL

B_IN-

R_IN+

B_IN+

R_IN-

G_IN-

G_IN+

SOGI

DDC_WP

VSI

HSI

GND

43

ViewSonic Corporation Confidential - Do Not Copy VG921m-2

Model

Title

Date Rev:

ViewSonic Corporation

WP

LEDB

LEDG

B_D0

F_D12

B_D9

OSP

F_D0

F_D11

B_D16

F_D19

B_D14

F_D15

ESP

VCTRL

F_D10

B_D1

F_D5

B_D0

F_D2

F_D14

F_D10

SCL

B_D1

F_D2

F_D6

B_D14

F_D18

B_D11

F_D3

B_D12

B_D13

B_D15

B_D7

B_D4

F_D1

B_D18

F_D8

F_D0

B_D18

F_D3

B_D10

B_D17

B_D3

F_D13

B_D17

B_D10

F_D4

B_D8

B_D2

F_D5

LEDG

F_D16

F_D17

F_D11

F_D17

B_D12

B_D11

F_D15

F_D1

F_D7

B_D5

F_D6

B_D16

F_D19

SDA

B_D6

F_D4

F_D9

F_D16

F_D13

B_D5

F_D8

B_D19

B_D6

B_D4

VCTRL

B_D3

B_D19

F_D18

B_D8

B_D13

B_D9

F_D7

B_D2

F_D12

B_D7

F_D9

LEDB

B_D15

F_D14

C3

0.1uF/16V

R533 NC

+

C157

10uF/16V

R217 4.7KΩ 1/16W

R35 100Ω 1/16W

RIN0P

59

GIN0P

56

SOGIN0

57

BIN0P

54

RIN0N

58

GIN0N

55

BIN0N

53

HSYNC0

63

VSYNC0

64

REXT

51

REFP

62

REFM

61

SDO

70

SCK

72

SCZ

71

SDI

73

GPIO_P27/PWM1

79

PWM1/GPIO_P25

21

NC/LVACKM/NC

108

XIN

32

XOUT

33

RA1P/LVA2P/RA2

109

RA1N/LVA2M/RA3

110

RA2P/LVA1P/RA4

111

RA2N/LVA1M/RA5

112

RA3P/LVA0P/RA6

113

RA3N/LVA0M/RA7

114

CLKAP/LVB3P/LHSYNC

118

CLKAN/LVB3M/LVSYNC

119

CLKBP/LVBCKP/LCK_ODD

120

CLKBN/LVBCKM/LDE

121

NC/LVB2P/NC

122

NC/LVB2M/NC

123

BB1P/LVB1P/BB2

124

BB1N/LVB1M/BB3

125

BB2P/LVB0P/BB4

126

BB2N/LVB0M/BB5

127

NC/LVACKP/NC

107

GA3N/LVA3M/GA7

106

GA3P/LVA3P/GA6

105

GND41GND

47

RX2P

39

RX2N

40

RX1P

42

RX1N

43

AVDD_DVI

44

RX0P

45

RX0N

46

RXCKP

48

RXCKN

49

GND38GND96GND

116

VDDP

67

VDDC

12

MODE[1]

104

MODE[0]

102

VCTRL

11

VDDP

14

VDD_OTP

68

DDCA_SDA

65

DDCA_SCL

66

DDCD_SDA

36

DDCD_SCL

37

PWM0/GPIO_P26

29

AVDD_DVI

50

VDDC

97

GPIO_P15

69

PWM2/GPIO_P24

78

GPIO_P16

20

GPIO_P17/SAR0

22

GPIO_P00/SAR1

23

GPIO_P01/SAR2

24

GPIO_P06

27

GPIO_P07

28

GPIO_P13

30

GPIO_P14

31

GPIO_P16

35

DDCROM_SDA

76

DDCROM_SCL

77

RST

19

GA2P/NC/GA4

100

GA2N/NC/GA5

101

GA1P/NC/GA2

98

GA1N/NC/GA3

99

BA3P/NC/BA6

93

BA3N/NC/BA7

94

BA2P/NC/BA4

91

BA2N/NC/BA5

92

BA1P/NC/BA2

89

BA1N/NC/BA3

90

RB1P/NC/RB2

9

RB1N/NC/RB3

10

RB2P/NC/RB4

15

RB2N/NC/RB5

16

RB3P/NC/RB6

17

RB3N/NC/RB7

18

GB1P/NC/GB2

2

GB1N/NC/GB3

3

GB2P/NC/GB4

5

GB2N/NC/GB5

6

GB3P/NC/GB6

7

GB3N/NC/GB7

8

BB3P/NC/BB6

128

BB3N/NC/BB7

1

ESP

80

OSP

81

GPO0

88

GPO1

87

GPO2

86

GPO3

85

GPO4

84

GPO5

83

GPO6

82

GPIO_P02/SAR3

25

GPIO_P03

26

GPIO_P22

75

GPIO_P23

74

AVDD_PLL

52

AVDD_MPLL34AVDD_MPLL

4

VDDP95VDDP

103

VDDP

115

VDDC

117

AVDD_ADC

60

GND

13

U401

TSUM57AK

1

H3

R194 10KΩ 1/16W

Q12

PMBS3906

R192 NC

R535 220KΩ 1/16W

1

H12

TP84

C22

0.1uF/16V

TP74

D26

LL4148WP

R25 15KΩ 1/16W

R530

2KΩ 1/16W

C

B

E

Q15

CHT2907

R193 NC

R36 NC

FB408

600 OHM

C4

0.1uF/16V

R2 22Ω 1/16W

C151

0.1uF/16V

R176 39KΩ 1/16W

R37 100Ω 1/16W

TP80

C153

0.1uF/16V

R42 100Ω 1/16W

C27

0.1uF

C155

0.1uF/16V

R189 47Ω 1/16W

C156

0.1uF/16V

C24

0.1uF/16V

1

H4

1

H13

+

C21

10uF/16V

C5

0.1uF/16V

R182

4.7KΩ 1/16W

R531

100Ω 1/16W

TP78

FB407

600 OHM

C20 0.047uF

C229

0.1uF

R11 4.7KΩ 1/16W

C19

0.1uF/16V

C158

0.1uF/16V

R175 39KΩ 1/16W

C6

0.1uF/16V

L2

80ohm

TP81

L3

80ohm

TP85

Y1

14.318MHZ

1

H11

R199 1KΩ 1/16W

R27 10KΩ 1/16W

1

H5

D20

NC/UDZS5.6B

C12 0.047uF

R24 4.7KΩ 1/16W

C7

0.1uF/16V

C160

0.1uF/16V

TP86

FB406

600 OHM

R31 100Ω 1/16W

R532 NC

R198 47Ω 1/16W

C152

0.1uF/16V

C13 0.047uF

R16 22Ω 1/16W

TP79

C154

0.1uF/16V

C8

0.1uF/16V

R5 4.7KΩ 1/16W

R187 22KΩ 1/16W

R173 10KΩ 1/16W

A0

1

A1

2

A2

3

GND4SDA

5

SCL

6

WP

7

VCC

8

U1

AT24C16N-10SC-2.7

D21

NC/UDZS5.6B

CE#

1

SDO

2

WP#

3

VSS4SDI

5

SCK

6

HOLD#

7

VDD

8

U402

SST25VH010

R43 100Ω 1/16W

R1 22Ω 1/16W

1

H6

R4 4.7KΩ 1/16W

TP96

R17 22Ω 1/16W

FB6

600 OHM

C14 0.047uF

R28 390 1%

R23 10KΩ 1/16W

L1

80ohm

Q14 PMBS3904

C9

0.1uF/16V

FB1

600 OHM

R177 4.7KΩ 1/16W

R22 22Ω 1/16W

1

H7

R44 100Ω 1/16W

R190 10KΩ 1/16W

R7 100Ω 1/16W

R33 10KΩ 1/16W

C15 0.047uF

R18 22Ω 1/16W

R3 4.7KΩ 1/16W

Q11 PMBS3904

R30 4.7KΩ 1/16W

R188 10KΩ 1/16W

R29 NC/ 1MΩ 1/16W

C10 0.1uF/16V

1

H8

R19

10KΩ 1/16W

D25

LL4148WP

R534 NC

R536 4.7KΩ 1/16W

C28 22pF

R8 100Ω 1/16W

R529

51Ω 1/16W

C16 0.047uF

R21 22Ω 1/16W

R1510KΩ 1/16W

R32 4.7KΩ 1/16W

1

H2

FB2

600 OHM

+

C163

4.7uF/35V

1

H1

TP73

R195 47Ω 1/16W

+

C23 10uF/16V

R191 47Ω 1/16WC29 22pF

R12 4.7KΩ 1/16W

TP76

C17 0.047uF

Q13

PMBS3906

R20

NC

TP77

R34 NC

3.3V

1.8V

5V

3.3V

GND

3.3V

AVDD

VDDC

GND

3.3V

GND

VMPLL

GND

VDVI

VMPLL

3.3V

VPLL

5V

AVDD

GND

3.3V

GND

3.3V

VDDP

GND

3.3V

5V

VDVI

GND

3.3V

VDDP

GND

1.8V

VPLL

VDDC

5V

AVDD

GND GND GND

GND

GNDGND

5V

GND

5V

3.3V DDC_WP

OE

B_D[0..19]

R_IN+

BL_BRIGHT

SW5_MENU

STV1

DDC_SDA

SW4_VOL+

F_D[0..19]

G_IN+

LP

HSI

R_IN-

PWR_LEDG

B_IN+ B_IN-

STH_B STH_F

POL

AMP_MUTE

AMP_STBY

DDC_SCL

BL_EN

PWR_LEDB

VOLUME

PWR_EN

VSI

DVI_R+

G_INSOGI

DVI_R-

DVI_G-

DVI_G+

DVI_B-

DVI_CLK-

DVI_CLK+

DVI_B+

DVI_SCL

DVI_SDA

VGA_DET

DVI_DET

PWR

RSDS/LVDS/TTL

STHB,F SWAP 10/06

C18NC

C11NC

CPV

GNDGND

C25 NC

GND

C26 NC

GND

C42 NC

GND

C43 NC

GND

C44 NC

GND

R10 NC

R13 NC

R14 NC

GND

R77 NC

R76 NC

R79 NC

R78 NC

R81 NC

R80 NC

44

ViewSonic Corporation Confidential - Do Not Copy VG921m-2

Model

Title

Date Rev:

ViewSonic Corporation

R4

C26

C18

R16

C24

C28

Vin

GND

R26

R27

C3

R21

1

2.3

8

5

4

6.7

T1

VCC

R25

C2

R15

C29

C1

R1

S1

1

G1

2

S2

3

G2

4

D1

8

D1

7

D2

6

D2

5

U3

C25

C27

S1

1

G1

2

S2

3

G2

4

D1

8

D1

7

D2

6

D2

5

U2

C30

R11

BRC

9

BRS

10

DBRT

11

ABRT

12

ENSYNC

13

LOK

14

PRR

15

BTR

16

SI

1

LI

2

LV

3

COMP

4

AG

5

FT

6

LCS

7

LCC

8

UGR

17

OUTR

18

VCCR

19

LGR

20

PRL

22

PGR

21

PGL

28

LGL

27

VCCL

26

OUTL

25

UGL

24

BTL

23

U1

R9R3R10

C6

IC_VCC

R17

G

DS

Q2

C23

D14

C19 C20

R28

R29

R22

R30

R31

R23

R32

R33

R24

LI LI

FB4

FB3

FB2

C14

FB1

C15

C16

C17

LV1

LV2

LV3

LV4

C22

R18

R7

1 2

CN1A

LV4

LV3

LV2

LV1

C31

FB1

FB4

C32

C34

FB2

FB3

C33

C4

D1

D2

D3

D4

D6

D5

D8

D7

C21

R8

ON/OFF

R5

R2

G

D S

Q1

C5

R6

D15

R34

C9

R35

C10

R36

C11

R37

C12

D10 D12

D11

D13

IC_VCC

DBRT

R12

R19

R41

C8

R40

Q3

C35

C36

C37

R43

3 4

CN1B

CN1

3 4

CN2B

1 2

CN2A

CN2

LI

R20R39R38

2

1

4

3

JP10

C7

45

ViewSonic Corporation Confidential - Do Not Copy VG921m-2

Model

Title

Date Rev:

ViewSonic Corporation

CY103

+

C114

D110

T101

R112

C115

1

3

6

5

D120

R120R121

L120

C260

R260B

D260

R234

C231

R232

R233

A K

R

IC230

R230

12

PC201A

+12V

R231

R263

+

C261

7.8

INVERTER

3 4

PC201B

C120

+

C123

ZD120

+5.2V/3A

+5.2V

D240

R240B

C240

+

C244

L240

+

C242

RTN

9.10

ZD121

11.12

F101

CX101

CY101

VA101

1

4

2

3

LF102

TH101

3

2

4

1

BD101

L

N

FG

CN100

R101

CY102

R102

1

4

2

3

LF101

R241

ZD260

R264

C243

C264

+

C241

R113

CY104

ZD110

R123

R124

R122

C124

Drain

1

GND

2

Vcc

3

FB

4

Ilimit

6

NC

5

U101

R235

R260A

R240A

R262

+

C232

R114

46

ViewSonic Corporation Confidential - Do Not Copy VG921m-2

Model

Title

Date Rev:

ViewSonic Corporation

AUDIO_STBY

Volume

AUDIO_MUTE

SPL

SPR

+

C504

R503

R504

C506

C510

+

C502

+

C503

GND1GND2GND

3

INL

4

VAROUT_L

5

VOLUME

6

VAROUT_R

7

NC

8

INR

9

SVR

10

STBY

11

MUTE

12

GND

13

OUTR

14

VS15VS

16

OUTL

17

GND18GND19GND

20

U501

R510

C505

R505

C509

R507

R501

C508

R511

R506

+

C501

C507

R502

FB504

FB502

R509R508

C512C511

1 2 3 4 5

CN501

FB501

FB503

R512

AUDIO_MUTE

AUDIO_STBY

Volome

SPL SPR

+5V

+12V

Q501

47

ViewSonic Corporation Confidential - Do Not Copy VG921m-2

9. PCB Layout Diagrams

48

ViewSonic Corporation Confidential - Do Not Copy VG921m-2

49

ViewSonic Corporation Confidential - Do Not Copy VG921m-2

50

ViewSonic Corporation Confidential - Do Not Copy VG921m-2

51

ViewSonic Corporation Confidential - Do Not Copy VG921m-2

52

ViewSonic Corporation Confidential - Do Not Copy VG921m-2

53

ViewSonic Corporation Confidential - Do Not Copy VG921m-2

SILKSCREEN-TOP

54

ViewSonic Corporation Confidential - Do Not Copy VG921m-2

TOP SIDE

55

ViewSonic Corporation Confidential - Do Not Copy VG921m-2

10. Exploded Diagram and Exploded Parts List

ViewSonic Model Number: VS11313 Rev: 1a

EXPLODED PARTS LIST ( VG921m-2 )

56

ViewSonic Corporation Confidential - Do Not Copy VG921m-2

Serial No. Prefix: QB8

Item ViewSonic P/N Ref. P/N Description Q't

y

1 E-00008261

30-V9211R53G001 VG921 SPEAKER 1.5W/8R 100mm 2

2

N

/A

41-03010037G000 HX191 WALL MOUNT BRACKET 2

3 TAIWAN

190SEN1-A04 LI

Q

UID CRYSTAL DEVICE HSD190SEN1-A 1

4

N

/A

40-01010054G000 VG921m Bezel ABS-HB TY4818A 1

5 C-00008256

40-02010023G000 VG921m Back Cover ABS-HB Black 1

6

N

/A

40-03010028G000 VG921m Power Button ABS-HB 1

7

N

/A

40-03010029G000 VG921m Function Botton ABS-HB 1

8

N

/A

40-04060009G000 VG921m LED LENS PMMA 1

9 C-00008257

40-05010017G000 VG921m Arm Front Cover ABS-HB Black 1

10 C-00008258

40-05010018G000 VG921m Arm Back Cover ABS-HB Black 1

11 PL-00008085

40-06010018G000 VG921m Base ABS-HB Blac

k

1

12

N

/A

40-07010006G000 VG921m Hin

g

e Cover ABS-HB Black 1

13

N

/A

40-09010001G000 VG921m Cable Cli

pp

er Up ABS-HB Black 1

14

N

/A

40-09010002G000 VG921m Cable Cli

pp

er Down ABS-HB Black 1

15

N

/A

41-03010041G000 VG921 Hin

g

e BKT R SECC,T=1mm 1

16

N

/A

41-03010071G000 VG921 Hin

g

e BKT L SECC,T=1mm 1

17

N

/A

41-07010013G000 VG921m Hin

g

e SECC , T=2m

m

1

18

N

/A

41-08010001G000 VG921m Base Plate SECC , T=2m

m

1

19

N

/A

42-01120014G000 VG921 m

y

lar transparent 33.2x20.7x0.25t 1

20

N

/A

42-02110009G000 VG921m Rubber Pad 1

21

N

/A

43-01030602G010 Screw M3*6 Pan Head Ni Ta

p

15

22

N

/A

43-01030802G110 SCREW M3x8 PAN WASHER NI TAP 4

23

N

/A

43-02040602G000 Screw M4*6 Wafer Head Black-Ni Me 4

24

N

/A

43-01041004G300 SCREW M4*10 PAN SPRING+WASHER BZ 4

25

N

/A

43-04030802G010 SCREW M3*8 FLAT NI TAP 6

26 B-00008252

70-VG921000G000 VG921 Power KEY BOARD ASS’Y

(

Lead Free)1

27 B-00008251

70-VG921001G000 VG921 KEY BOARD ASS’Y

(

Lead Free

)

1

28

N

/A

42-02110009G000 VG921m Rubber Pad 5

29 M-00008001

42-04260007G000 Bird Lo

g

o Brand for Viewsonic AL+PC 1

30 PL-00008002

42-04170008G000 Name plate Brand for Viewsonic AL 1

2

ViewSonic Model Number: VS11313 Rev: 1a

Item ViewSonic P/N Ref. P/N Location Q'ty

1 N/A

61-01000003G000 U171

p

e bag 225 * 400 mm

1

2 P-00008257

61-01000028G000 VG921 end ca

p

-L EPS

1

3 CB-00008097

33-R3910501G000 Cable si

g

nal D/15p(M) 1800mm-JHEN

1

4 P-00008258

61-01000033G000 VG921 end ca

p

-R EPS

1

5 DC-00008004

62-07000013G000 8ms sticke

r

1

6 N/A

62-0600003G000 Barcode label 76.2*76.2mm

1

7 DC-00008213

72-01921M02G000 V

g

921m packing ass’

y

1

8 P-00008005

61-03000007G000 Pe ba

g

500*650mm

1

9 A-00008004

33-E3980011G000 PWR cord TWN 125V/7A 1.8m 3C BLK

1

10 CB-00008109

33-R3910506G000 Cable stereo

p

hone(JHEN VEI

)

1

11 M-00008002

42-01260012G000 M

y

lar 393*318*0.1 for 19”

1

12 P-00008256

60-01000031G000 VG921 carton viewsonic taiwan

1

PACKING PART LIST ( VG921m-2 )

57

ViewSonic Corporation Confidential - Do Not Copy VG921m-2

58

ViewSonic Corporation Confidential - Do Not Copy VG921m-2

11. Recommended Spare Parts List

Serial No. Prefix: QB8 Rev: 1a

Item ECR/ECNViewSonic P/N Ref. P/N Location Universal number#

1 Power Cord 125V/7A 1.8M 3C Taiwan A-00008004

33-E3980011G000

2 Power Cord - 250V/10A 1.8M 3C BLK (China) A-00008038

33-E3980005G000

3 Power Cord - 125V/10A 1.8M 3C BLK (USA) A-00008039

33-E3980000G000

4 Power Cord - 250V/10A 1.8M 3C BLK (Europe) A-00008040

33-E3980003G000

5 Power + Inverter Board - 190SEN-A00 B-00008179

7055F00A01-B1

6

Power Key Board ASS’Y (Lead Free)

B-00008252

70-VG921000G000

7

Key Board (Lead Free)

B-00008251

70-VG921001G000

8

Front Panels

C-00008255

45-G9210116G000

9

Back Cover

C-00008256

40-02010023G000

10

Front Cover - (Arm) C-00008257 40-05010017G000

11

Back Cover (Arm)

C-00008258

40-05010018G000

12 Video Cable - (Signal Cable - D/15P-15P(M) CB-00008097

33-R3910501G000

13

Stereo AV Cable - JHEN VEI)

CB-00008109

33-R3910506G000

14 Energy Star Label DC-00008001

62-07000009G000

15 Label - (QC-Pass China) DC-00008002

62-07000010G000

16 Hi-Pot Pass Label DC-00008003

62-07000011G000

17 8ms Sticker DC-00008004

62-07000013G000

18

Packing Assy - (User Guide, QSG, CD) China

DC-00008213

72-01921M02G000

19

Packing Assy - (User Guide, QSG, CD) Taiwan

DC-00008214

72-01921M03G000

20

Packing Assy - (User Guide, QSG, CD) USA

DC-00008215

72-01921M01G000

21

LCD Panel - HSD190SEN1-A

E-00008260

190SEN1-A04

22

Speaker 1.5W/8R 100mm

E-00008261

30-V9211R53G001

23 Bird Logo Brand For Viewsonic M-00008001

42-04260007G000

24 Mylar 393*318*0.1(Protective Film) for 19 M-00008002

42-01260012G000

25 PE BAG 225*400MM P-00008004

61-03000003G000

26 PE BAG 500*650mm P-00008005

61-03000007G000

27 PE bag 700*700mm (CHN) P-00008243

61-03000010G000

28

Craft Box

P-00008256

60-01000031G000

29

END CAP EPS

P-00008257

61-01000028G000

30

END CAP-R EPS

P-00008258

61-01000033G000

31 Name plate Brand for Viewsonic PL-00008002

42-04170008G000

32

Pedestal (Base)

PL-00008085

40-06010018G000

Remark 1:

Above listed items are examples, supplier can expand the rows to add more necessary items.

Remark 2:

RECOMMENDED SPARE PARTS LIST ( VG921m-2 )

Description

Cabinets:

[Front Panel, All Covers, Base Assembly]

Cables: [All Cabl

e

Accessories:

[Adapter, Remote Control;Power Cord]

ViewSonic Model Number: VS11313

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

PC Board Assembly: [All

PCBA]

Plastics:

[Pedestal, Plate,

Packing Material:

[Box,

Foam, Bags]

Documentation:

[Quick Start Guide, CD Rom; Label]

Electronic Components:

Miscellaneous:

[Switch, Fan,

ViewSonic Model Number: VS11313 Rev: 1a

Serial No. Prefix: QB8

Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty

1 N/A

04-1VG92100G000 EDID VG921m-2 190ME13 EDID A 4

2 N/A

06-VG322100G000 Bin Code VG921m-2 AR HSD190ME13 A11R30.0 4

3 TAIWA

N

190SEN1-A04 LIQUID CRYSTAL DEVICE HSD190SEN1-

A

4

4 E-00008261

30-V9211R53G001 VG921 SPEAKER 1.5W/8R 100mm 8

5 N/A

33-00000004G000 PWR CORD EUR 250V/10A 1800MM 3C BLK 1

6 CB-00008003

33-00070500G000 CABLE STEREO PHONE SZE33261

B

4

7 N/A

33-00080000G000 PWR CORD AMERICAN

(

UL/CSA) 125V/10A 1800

m

1

8 A-00008003

33-00080002G000 PWR CORD CHINA 250V/10A 1800MM LF 1

9 CB-00008001

33-00090501G000 CABLE SIGNAL D/15P-15P

(M)

1800M

M

4

10 N/A

33-E3910011G000 PWR CORD TAIWAN

(

BSMI) 125V/7A1800mm bl

k

1

11 A-00008039

33-E3980000G000 PWR CORD USA 125V/10A 1.8M 3C BLK"Linetek

"

1

12 A-00008040

33-E3980003G000 PWR CORD EUR 250V/10A 1.8M 3C BLK"Linetek

"

1

13 A-00008038

33-E3980005G000 PWR CORD CHN 250V/10A 1.8M 3C BLK"Linetek

"

1

14 A-00008004

33-E3980011G000 PWR CORD TWN 125V/7A 1.8M 3C BLK "LintekLinetek

"

1

15 CB-00008097

33-R3910501G000 CABLE SIGNAL D/15P-15P

(M)

1800MM-JHEN VE

I

4

16 CB-00008109

33-R3910506G000 CABLE STEREO PHONE

(

JHEN VEI

)

4

17 N/A

34-04170016G000 AL FOIL W30*L22

0

4

18 N/A

34-04170022G000 AL. Foil W 10 x L 80 x t0.1mm 4

19 N/A

34-04170023G000 AL. foil w10 x L30 x t0.1mm 4

20 N/A

40-01010054G000 VG921m Bezel ABS-HB TY4818A 4

21 C-00008256

40-02010023G000 VG921m Back Cover ABS-HB Blac

k

4

22 N/A

40-03010028G000 VG921m Power Button ABS-HB 4

23 N/A

40-03010029G000 VG921m Function Botton ABS-HB 4

24 N/A

40-04060009G000 VG921m LED LENS PMM

A

4

25 C-00008257

40-05010017G000 VG921m Arm Front Cover ABS-HB Blac

k

4

26 C-00008258

40-05010018G000 VG921m Arm Back Cover ABS-HB Blac

k

4

27 PL-00008085

40-06010018G000 VG921m Base ABS-HB Blac

k

4

28 N/A

40-07010006G000 VG921m Hin

g

e Cover ABS-HB Blac

k

4

29 N/A

40-09010001G000 VG921m Cable Cli

pp

er Up ABS-HB Black 4

30 N/A

40-09010002G000 VG921m Cable Cli

pp

er Down ABS-HB Blac

k

4

31 N/A

41-03010037G000 HX191 WALL MOUNT BRACKE

T

8

32 N/A

41-03010041G000 VG921 Hin

g

e BKT R SECC, T=1mm 4

33 N/A

41-03010071G000 VG921 Hin

g

e BKT L SECC, T=1mm 4

34 N/A

41-07010013G000 VG921m Hin

g

e SECC , T=2mm 4

35 N/A

41-08010001G000 VG921m Base Plate SECC

,

T=2mm 4

36 N/A

42-01120014G000 VG921 m

y

lar transparent 33.2x20.7x0.25t 4

37 M-00008002

42-01260012G000 M

y

lar 393*318*0.1

(

硬質保護膜

)

for 19” 4

38 C-00008004

42-02110007G000 Back cover of ESD rubber-1 Black

φ

8*1.5 8

39 C-00008005

42-02110008G000 Back cover of ESD rubber-2 Black

φ

7*1.5 16

40 N/A

42-02110009G000 VG921m Rubber Pad 24

41 PL-00008002

42-04170008G000 Name

p

late Brand for Viewsonic AL 4

42 M-00008001

42-04260007G000 Bird Lo

g

o Brand for Viewsonic AL+PC 4

43 N/A

43-01030602G010 Screw M3*6 Pan Head Ni Ta

p

60

44 N/A

43-01030802G110 SCREW M3x8 PAN WASHER NI TA

P

16

45 N/A

43-01041004G300 SCREW M4*10 PAN SPRING+WASHER BZ M

E

16

46 N/A

43-02040602G000 Screw M4*6 Wafer Head Black-Ni M

e

16

47 N/A

43-04030802G010 SCREW M3*8 FLAT NI TA

P

24

48 N/A

43-12030302G001 Screw M3*3 Round washer Ni Me 16

49 C-00008255

45-G9210116G000 VG921m Bezel Sub-Ass

y

4

50 P-00008256

60-01000031G000 VG921 Carton Viewsonic Taiwan 4

51 P-00008257

61-01000028G000 VG921 END CAP EPS 4

52 P-00008258

61-01000033G000 VG921 END CAP-R EPS 4

53 P-00008004

61-03000003G000 U171 PE BAG 225*400MM 4

54 P-00008005

61-03000007G000 PE BAG 500*650mm 4

55 P-00008243

61-03000010G000 PE ba

g

700*700mm 1

56 N/A

62-02000021G000 VG921m Base Guide 4

57 N/A

62-02000023G000 VG921m

Q

uick Start Taiwan 4

58 N/A

62-03000017G000 ViewSonic Warrant

y

US

A

1

59 N/A

62-03000018G000 ViewSonic Warrant

y

China 1

60 N/A

62-04000011G000 VG921m CD User Guide 4

61 N/A

62-05000026G000 VG921 ID LABEL TAIWA

N

4

62 N/A

62-06000003G000 BARCODE LABEL 76.2*76.2M

M

4

63 N/A

62-06000004G000 BARCODE LABEL 50*25M

M

4

64 N/A

62-06000005G000 BARCODE LABEL 25*12M

M

4

65 N/A

62-06000006G000 Barcode label 35*4m

m

4

66 DC-00008001

62-07000009G000 Ener

gy

Star Labe

l

4

67 DC-00008002

62-07000010G000

Q

C-Pass Labe

l

1

68 DC-00008003

62-07000011G000 Hi-Pot Pass Label 4

69 DC-00008004

62-07000013G000 8ms sticker 3

70 N/A

62-07000014G000 Customer label 1

71 N/A

62-07000015G000 ViewSonic Customer label 180*100mm 1

72 B-00008252

70-VG921000G000 VG921 Power KEY BOARD ASS’Y

(

Lead Free

)

4

73 B-00008251

70-VG921001G000 VG921 KEY BOARD ASS’Y

(

Lead Free

)

4

74 DC-00008215

72-01921M01G000 VG921m USA Packin

g

ass

y

1

75 DC-00008213

72-01921M02G000 VG921M CHINA PACKING ASS

Y

1

76 DC-00008214

72-01921M03G000 VG921m Packing assy 2

BOM LIST ( VG921m-2 )

59

ViewSonic Corporation Confidential - Do Not Copy VG921m-2

60

ViewSonic Corporation Confidential - Do Not Copy VG921m-2

* Reader’s Response*

Dear Readers:

Thank you in advance for your feedback on our Service Manual, which allows continuous improvement of our products. We would appreciate your completion of the Assessment Matrix below, for return to ViewSonic Corporation.

Assessment

A. What do you think about the content of this Service Manual?

Unit Excellent Good Fair Bad

1. Precautions and Safety Notices

2. Specification

3. Front Panel Function Control Description

4. Circuit Description

5. Adjustment Procedure

6. Troubleshooting Flow Chart

7. 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?

Reader’s basic dada:

Name:

Title: Company: Add: Tel:

Fax:

E-mail:

After completing this form, please return it to ViewSonic Quality Assurance in the USA at facsimile 1-909-839-7943. You may also e-mail any suggestions to the Director, Quality Systems & Processes (marc.maupin@viewsonic.com)