ViewSonic VX2025wm-1 User Manual

Service Manual

ViewSonic VX2025wm-1

Model No. VS10859

20” Color TFT LCD Display

(VX2025wm-1_SM Rev. 1b Sep. 2006)

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

Copyright

Copyright © 2005 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 02/16/2006 Initial Release Jamie Chang

1b 09/11/2006 VS-E060132 Add 2nd panel source Jamie Chang

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TABLE OF CONTENTS

1. Precautions and Safety Notices 1

2. Specification 4

3. Front Panel Function Control Description 9

4. Circuit Description 12

5. Adjustment Procedure 24

6. Troubleshooting Flow Chart 38

7. Recommended Spare Parts List 41

8. Exploded Diagram and Exploded Parts List 44

9. Block Diagram 48

10. Schematic Diagrams 49

11. PCB Layout Diagrams 56

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1. Precautions and Safety Notices

1. 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 guide line

2. Safety Check :
Care should be taken while servicing this LCD display. Because of the high voltage used in the
inverter circuit. These voltage are exposed in such areas as the associated transformer circuits .

3. 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 .

4. LEAKAGE CURRENT HOT CHECK
4-1 Plug the AC cord directly into the AC outlet. Do not use an isolation transformer during

this check.

4-2 Connect a 1500 ohm , 10 watt resistor , paralleled by a 0.15uF capacitor between each

metallic part and a good earth ground

4-3 Use an AC voltmeter with 1000 ohm / volt or more sensitivity and measure the AC voltage

across the combination 1500 ohm resistor and 0.15uF capacitor.
4-4 Move the resistor connection to each exposed metallic part and measure the voltage.
4-5 Reverse the polarity of the AC plug in the AC outlet and repeat the above measurement.
4-6 Voltage measured must not exceed 1.5 volt RMS, from any exposed metallic part to the

ground. A leakage current tester may be used in the above hot check, in which case any

circuit measured must not exceed 1.0 milliamp. In the case of a measurement exceeding

the 1.0 milliamp value, a rework is required to eliminate the chance of a shock hazard .

AC VOLTMETER

V

0.15u
.

To Metal Parts

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1500 10W

1

Earth Ground

Handing Methods

correct method

Take out the monitor with cushion

Place the monitor on a clean & soft foam pad

incorrect method

Take out the monitor by grasping the LCD

panel.That may cause “ MURA“.

Place the monitor on foreign objects .That

could scratch the surface of panel

Do not touch the surface of the polarizer .

Surface of the panel is pressed by fingers &

this may cause “ MURA “

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2

bezel

bezel

bracket

bracket

when you get the lcd

monitor

monitor

when assemble&disassembly

when you get the lcd

when assemble&disassembly

when assemble&disassembly

when assemble&disassembly

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3

2. Specification

GENERAL specification

Test Resolution & Frequency 1680x1050 @ 60Hz
Test Image Size Full Size

Contrast and Brightness Controls

VIDEO INTERFACE

Analog Input Connector DB-15 (Analog), refer the appendix A
Digital Input Connector DVI-D (Digital), refer the appendix B
Default Input Connector Defaults to the first detected input
Video Cable Strain Relief Equal to twice the weight of the monitor for five minutes
Video Cable Connector DB-15 Pin out Compliant DDC 1/2B

Video Signals
Video Impedance 75 Ohms (Analog), 100 Ohms (Digital)

Maximum PC Video Signal 950 mV with no damage to monitor
Maximum Mac Video Signal 1250 mV with no damage to monitor
Sync Signals LVDS
DDC 1/2B Compliant with Revision 1.3
Sync Compatibility Separate Sync, Composite Sync, SOG

Video Compatibility

Resolution Compatibility

Exclusions Not compatible with interlaced video

Factory Default:
Contrast = 70%, Brightness = 100%

1. Video RGB (Analog)
Separate, Composite, and Sync on Green

2. TMDS (Digital)

Shall be compatible with all PC type computers, Macintosh
computers, and after market video cards
640 x 350*, 640 x 480, 720 x 400* (640 x 400*), 800 x 600, 832 x
624, 1024 x 768, 1152 x 864, 1152 x 870, 1280 x 720, 1280 x
960, 1280 x 1024, 1680 x 1050
* The image vertical size might not be full screen.
But the image vertical position should be at the center.

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POWER SUPPLY

Internal Power Supply Part Number: EAPD-64CF
Input Voltage Range 90 TO 264 VAC
Input Frequency Range 47.5 TO 63 HERTZ
Short Circuit Protection Output can be shorted without damage
Over Current Protection 10 A typical
Leakage Current 3.5mA (Max) at 264VAC / 50Hz
EFFICIENCY 80 % typical at 115VAC Full Load
Fuse Internal and not user replaceable
Power Dissipation 64 Watts (typ)
Max Input AC Current 1.5Arms @ 90VAC
INRUSH CURRENT (COLD START) 80 A @ 230VAC

Shall start and function properly when under full load, with all

Power Supply Cold Start

Power Supply Transient Immunity
Power Supply Line Surge Immunity

Power Supply Missing Cycle Immunity

Power Supply Acoustics

US Type Power Cable

European Type Power Cable

CCC Type Power Cable

PSE Type Power Cable

Power Saving Operation(Method)
Power Consumption

Recovery Time On Mode = N/A, Active Off < 3 sec

combinations of input voltage, input frequency, and operating
temperature
Shall be able to withstand an ANSI/IEEE C62.41-1980 2000V
200 ampere ring wave transient test with no damage
Shall be able to withstand 1.5 times nominal line voltage for one
cycle with no damage
Shall be able to function properly, without reset or visible screen
artifacts, when ½ cycle of AC power is randomly missing at
nominal input
The power supply shall not produce audible noise that would be
detectable by the user. Audible shall define to be in compliance
with ISO 7779 (DIN EN27779:1991) Noise measurements of
machines acoustics. Power Switch noise shall not be considered
Separate 3-prong NEMA 5-15P type plug. Length = 1.8m.
Connects to display.
Color = Black
Schuko CEE7-7 type plug.
Length = 1.8m, Connects to display.
Color = Black
Separate 3-prong type plug.
Length = 1.8m. Connects to display.
Color = Black
Separate 2-prong NEMA 1-15P type plug. Length = 1.8m.
Connects to display.
Color = Black
VESA DPMS Signaling
ON Mode < 50W (Max) / 49W (Typ)
On Mode < 50 W (Max) / 49W (Typ)
Saving Mode < 2 W, Off Mode < 1 W

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ELECTRICAL REQUIREMENT

Horizontal / Vertical Frequency

Horizontal Frequency 30 – 82 KHZ
Vertical Refresh Rate 50 – 75 HZ
Maximum Pixel Clock Digital: 165 MHz Analog: 205 MHz
Sync Polarity Independent of sync polarity.

Timing Table

Item Timing Analog Digital

1 640 x 350 @ 70Hz, 31.5kHz Yes Yes
2 640 x 400 @ 60Hz, 31.5kHz Yes Yes
3 640 x 400 @ 70Hz, 31.5kHz Yes Yes
4 640 x 480 @ 50Hz, 24.7kHz No No
5 640 x 480 @ 60Hz, 31.5kHz Yes Yes
6 640 x 480 @ 67Hz, 35.0kHz Yes Yes
7 640 x 480 @ 72Hz, 37.9kHz Yes Yes
8 640 x 480 @ 75Hz, 37.5kHz Yes Yes

9 640 x 480 @ 85Hz, 43.27kHz No No
10 720 x 400 @ 70Hz, 31.5kHz Yes Yes
11 800 x 600 @ 56Hz, 35.1kHz Yes Yes
12 800 x 600 @ 60Hz, 37.9kHz Yes Yes
13 800 x 600 @ 75Hz, 46.9kHz Yes Yes
14 800 x 600 @ 72Hz, 48.1kHz Yes Yes
15 800 x 600 @ 85Hz, 53.7kHz No No
16 832 x 624 @ 75Hz, 49.7kHz Yes Yes
17 1024 x 768 @ 60Hz, 48.4kHz Yes Yes
18 1024 x 768 @ 70Hz, 56.5kHz Yes Yes
19 1024 x 768 @ 72Hz, 58.1kHz Yes Yes
20 1024 x 768 @ 75Hz, 60.0kHz Yes Yes
21 1024 x 768 @ 85Hz, 68.67kHz No No
22 1152 x 864 @ 75Hz, 67.5kHz Yes Yes
23 1152 x 870 @ 75Hz, 68.7kHz Yes Yes
24 1280 x 1024 @ 60Hz, 63.4kHz Yes Yes
25 1280 x 1024 @ 75Hz, 79.97kHz Yes Yes
26 1280x 720 @ 60Hz, 45kHz Yes Yes
27 1680 x 1050 @ 60Hz, 65.3kHz Yes Yes
28 1680 x 1050 @ 75Hz, 82.3kHz Yes No
29 1680 x 1050 @ 85Hz, 93.9kHz No No

Primary Presets

1680x1050 @ 60Hz

AUDIO INTERFACE (SPEAKER SPECIFICATION)

Line input connection 3.5 mm stereo jack
Line input signal 1.3 Vrms
Line input impedance 10 kOhm
Maximum power output (Electric) 1 W @ < 5% distortion
Signal to Noise Ratio 72 dB
Frequency response 200 Hz – 20 Khz
Distortion

Vibration
Screen image

Connector PC99 requirement Audio in Lime Green pantone # 577C
Cable type / length 3.5mm stereo cable / 1.8m length

Audio DPMS

< 5 % THD (@1kHz)
There should be no audible vibration with volume at 100% and
treble / bass at default
There should be no affect on the screen image stability under
any conditions

Speakers stay on when the rest of the monitor is in power saving
Note: There is no guarantee <1 W power consumption in Active
Off mode, when the Audio Cable is connected

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Panel Characteristics:

st

Source Panel

1

Model number AUO M201EW01 V0
Type PMVA type with LVDS interface
Active Size 433.44 (H) x 270.9(V)
Pixel Arrangement RGB Vertical Stripe
Pixel Pitch 0.258 mm
GLASS TREATMENT Anti Glare (Hard coating 3H)
# OF BACKLIGHTS 6 CCFL
BACKLIGHT LIFE 50,000 Hours (Min)
Luminance (5-point) –
Condition:
CT = 6500K, Contrast = Max, Brightness = Max
Brightness Uniformity ≧80% (Typ), 75% (Min),
Contrast Ratio 800:1 (typ), 400:1 (min)
Color Depth 16.7 million colors (8 bits)
Viewing Angle (Horizontal) @ CR>10

Viewing Angle (Vertical) @ CR>10

Response Time
10%-90% @ Ta=25°C

Panel Defects Please see Panel Quality Specifications.

300 cd/m2 (Typ after 30 minute warm up)
240 cd/m2 (Min after 30 minute warm up)

Typical: 176º
Minimum: 150º
@ CR>5
Typical: T.B.D
Minimum: T.B.D

Typical: 176º
Minimum: 150º
@ CR>5
Typical: T.B.D
Minimum: T.B.D

Tr = 25 ms,Tf = 15 ms Total = 40ms (max)
Tr =11 ms,Tf = 5ms Total =16ms(typ)
Without OD Board (gray –gray)
(Average of Tr and Tf) = 8 ms (typ)

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2nd Source Panel

Model number AUO M201EW01 V3
Type AMVA type with LVDS interface
Active Size 433.44 (H) x 270.9(V)
Pixel Arrangement RGB Vertical Stripe
Pixel Pitch 0.258 mm
GLASS TREATMENT Anti Glare (Hard coating 3H)
# OF BACKLIGHTS 6 CCFL
BACKLIGHT LIFE 40,000 Hours (Min)
Luminance (5-point) –
Condition:
CT = 6500K, Contrast = Max, Brightness = Max
Brightness Uniformity ≧80% (Typ), 75% (Min),
Contrast Ratio 1000:1 (typ), 750:1 (min)
Color Depth 16.7 million colors (8 bits)
Viewing Angle (Horizontal) @ CR>10

Viewing Angle (Vertical) @ CR>10

Response Time
10%-90% @ Ta=25°C

Panel Defects Please see Panel Quality Specifications.

300 cd/m2 (Typ after 30 minute warm up)
240 cd/m2 (Min after 30 minute warm up)

Typical: 178º
Minimum: 150º
@ CR>5
Typical: T.B.D
Minimum: T.B.D

Typical: 178º
Minimum: 150º
@ CR>5
Typical: T.B.D
Minimum: T.B.D
Tr = 25 ms,Tf = 15 ms Total = 40ms (max)
Tr =11 ms,Tf = 5ms Total =16ms(typ)
Without OD Board (gray –gray)
(Average of Tr and Tf) = 8 ms (typ)

MECHANICAL

Dimension (Desktop)

Width 484.6 mm (19 inch)
Height 441.3 mm (17.3inch)
Depth 201 mm (7.9 inch)
Monitor Weight 6.3 Kg (13.89 lbs)

Dimension (Head Only / Wall Mount)
Width 484.6 mm (19 inch)
Height 340.1 mm (13.4 inch)
Depth 67.1 mm (2.6 inch)
Monitor Weight 5 Kg (11.02 lbs)

Ergonomics

Tilt Up From 0º up to 20º≧
Tilt Down From 0º down to -3º ~ -5 º

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3. Front Panel Function Control Description

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Main Menu Controls

Adjust the menu items shown below by using the up and down buttons.

A. Auto Image Adjust automatically sizes, centers, and fine tunes the video signal to eliminate

waviness and distortion. Press the [2] button to obtain a sharper image.

NOTE: Auto Image Adjust works with most common video cards. If this function does not work on

your LCD display, then

lower the video refresh rate to 60 Hz and set the resolution to its pre-set value.

B. Contrast adjusts the difference between the image background (black level) and the foreground

(white level).
C. Brightness adjusts the lamps current to control the screen brightness.
D. Input adjusts the Analogue or the Digital input source
E. Audio Adjust the volume increase or decrease and mute function
F. Color Adjust provides several color options: preset color temperatures and Custom User Color which

allows you to adjust red (R), green (G), and blue (B). The factory setting for this product is 6500K

(6500° Kelvin).
9300K — Adds blue to the screen image for cooler white (used in most office settings with fluorescent
lighting).
5400K — Adds red to the screen image for warmer white and richer red.
Custom User Color — Individual adjustments for red, green, and blue.
1 To select color (R, G or B) press button [2].
2 To adjust selected color, press ▲ or ▼ .
3 When you are finished making all color adjustments, press button [1] twice.

G. Information displays the timing mode (video signal input) coming from the graphics card in your

computer. See your graphic card’s user guide for instructions on changing the resolution and refresh

rate (vertical frequency). VESA 1680 x 1050 @ 60 Hz (recommended) means that the resolution is

1680 x 1050 and the refresh rate is 60 Hertz.
H. Manual Image Adjust controls are explained below:
H. Size (Horizontal Size) adjusts the width of the screen image.
NOTE: Vertical size is automatic with your LCD display.
H./V. Position adjusts horizontal and vertical position of the screen image. You can toggle between
Horizontal and Vertical by pressing button [2]. Horizontal moves the screen image to the left or to the right.
Vertical moves the screen image up and down.
Fine Tune sharpens focus by aligning the illuminated text and/or graphic characters.
Sharpness adjusts the clarity and focus of the screen image.
Setup Menu controls are explained below:
Language allows you to choose the language used in the menus and control screens.
Resolution Notice displays the recommended resolution for this LCD display.
Enable allows the Resolution Notice to appear on-screen.

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Disable will not allow the Resolution Notice to appear on-screen.
OSD Timeout sets the length of time an on-screen display screen is displayed. For example,
with a“15 second” setting, if a control is not pushed within 15 seconds, the display OSD disappears.
I. OSD Position allows you to move the on-screen display menus and control screens.
J. Memory Recall returns adjustments to the original factory settings if the display is operating in a

factory Preset Timing Mode listed in this user guide.

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4. Circuit Description

1. Outline

1.1 Power On/Off, (2) Enter button, up arrow button, down arrow button, (1) MENU button, n on the front
panel.

1.2 D-sub 15pin connector, DVI-D connector, audio line-in receptacle, and AC-IN are located on the back
side of the cabinet.

1.3 OSD menu includes the following function;

Auto Image Adjust (only active under analog input)

Contrast/Brightness

Input Select

Audio Adjust

Color Adjust

Information

Manual Image Adjust

Setup Menu

Memory Recall

1.4 Contrast and Brightness can be directly controlled with UP / DOWN key.

1.5 Audio volume can be controlled with UP/DN key when Audio Adjust menu is active.

2. CONNECTORS

2.1 AC inlet : CEE22 typed connector

2.2 Audio : Line-in,

CN9

1
5
4
3
2

Line-in receptacle
(Line-in receptacle is green)

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2.3 Video signal connector for analog input: 15P Mini D-Sub

CN6

162738495

10

DB15HD

16 17

PIN MNEMONI SIGNAL

1 RV Red Video
2 GV Green Video
3 BV Blue Video
4 NC None
5 GND Ground (DDC return)
6 RG Red GND

11

12

13

14

15

7 GG Green GND
8 BG Blue GND

9 +5V +5V (for DDC)
10 SG Sync GND
11 NC None
12 SDA DDC Data
13 HS Horizontal Sync
14 VS Vertical Sync
15 SCL DDC Clock

2.4 Video signal connector for digital input: 24pin DVI-D connector

CN9

Pin No. Signal Name Description

RX2-

RX2+

GND

RX4-

RX4+

SCL

SDA

VS

RX1-

RX1+

GND

RX3-

RX3+

5V

GND

HP

RX0-

RX0+

GND

RX5-

RX5+

GND

RXC+

RXC-

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16

17
18
19
20
21
22
23
24

1 RX2- TMDS negative differential input, channel 2
2 RX2+ TMDS positive differential input, channel 2
3 GND Logic Ground
4 RX4- Reserved. No connection
5 RX4+ Reserved. No connection
6 SCL DDC2B Clock
7 SDA DDC2B Data
8 VS Reserved. No connection

9 RX1- TMDS negative differential input, channel 1
10 RX1+ TMDS positive differential input, channel 1
11 GND Logic Ground
12 RX3- Reserved. No connection
13 RX3+ Reserved. No connection
14 +5V Power
15 GND Logic Ground
16 HP SENSE Pin, Pull High
17 RX0- TMDS negative differential input, channel 0
18 RX0+ TMDS positive differential input, channel 0

DVI-D

19 GND Logic Ground
20 RX5- Reserved. No connection
21 RX5+ Reserved. No connection
22 GND Logic Ground
23 RXC+ TMDS positive differential input, reference clock
24 RXC- TMDS negative differential input, reference clock

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3. ELECTRICAL SPECIFICATIONS

3.1 Standard conditions

Display Area
Video Signal
Contrast
Brightness
Ambient
Input
Warming up
Display

3.2 POWER

3.2.1 Power supply
Input voltage 100~240Vac
Power frequency 50~60Hz
Input current

433.44 x 270.9 mm

0.7Vpp

Default

Default

20 +/- 5 °C

AC

> 30 min

1680 x 1050

<1.5Arms@90Vac

Inrush current

Power consumption 47W(typical);50Watts(Max)

3.2.2 Power Management

State Power Indicator
On 47Watts Green

Standby < 2Watts Amber
Off <2Watts Off

80A(Max) at 230Vac(cold
start)

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3.3 Acceptable timing

If the timing is within following specification, this LCD display can automatically function with a certain
position.
Horizontal: Sync frequency: 30~82 KHz (Analog: 205MHz, Digital:165MHz)
Vertical: Sync frequency: 50~75*Hz

3.4 Signal level and input impedance

3.4.1 Video Signal level: 0.7Vp-p Video signal.

3.4.2 Sync Signal level

H/V Separate: TTL level

3.4.3 Input impedance

Analog video input: 75 ohm
Digital video input: 100 ohm
Sync input: > 1 k ohm
Audio input: 10K ohm

4. SIGNAL CABLE: Signal cable with Mini D-Sub 15P connectors at both ends. Length: 1.8 meter.

5. EDID data

5.1. Analog EDID: Analog EDID is stored in IC4
______________________________________________________________________
EDID Block 0, Bytes 0-127
128 BYTES OF EDID CODE:
0 1 2 3 4 5 6 7 8 9
________________________________________
0 | 00 FF FF FF FF FF FF 00 5A 63
10 | 1D E5 01 01 01 01 01 0F 01 03
20 | 0E 2B 1B 78 2E CF E5 A3 5A 49
30 | A0 24 13 50 54 BF EF 80 B3 0F
40 | 81 80 81 40 71 4F 01 01 01 01
50 | 01 01 01 01 21 39 90 30 62 1A
60 | 27 40 68 B0 36 00 B1 0F 11 00
70 | 00 1C 00 00 00 FF 00 51 36 59
80 | 30 35 30 31 30 30 30 30 31 0A
90 | 00 00 00 FD 00 32 4B 1E 52 15
100 | 00 0A 20 20 20 20 20 20 00 00
110 | 00 FC 00 56 58 32 30 32 35 77
120 | 0A 20 20 20 20 20 00 11
______________________________________________________________________
(08-09) ID Manufacturer Name ________________ = VSC
(11-10) Product ID Code _____________________ = E51D
(12-15) Last 5 Digits of Serial Number ______ = Not Used

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(16) Week of Manufacture _________________ = 01
(17) Year of Manufacture _________________ = 2005
(10-17) Complete Serial Number ______________ = See Descriptor Block
(18) EDID Version Number _________________ = 1
(19) EDID Revision Number ________________ = 3
(20) VIDEO INPUT DEFINITION:
Analog Signal

0.700, 0.300 (1.000 Vp-p)
Separate Syncs, Composite Sync, Sync on Green
(21) Maximum Horizontal Image Size ________________ = 430 mm
(22) Maximum Vertical Image Size __________________ = 270 mm
(23) Display Gamma ________________________________ = 2.20
(24) Power Management and Supported Feature(s):
Active Off/Very Low Power, Standard Default Color Space,
Preferred Timing Mode
Display Type = R/G/B Color
(25-34) CHROMA INFO:
Red X - 0.640 Green X - 0.288 Blue X - 0.144 White X - 0.313
Red Y - 0.352 Green Y - 0.628 Blue Y - 0.076 White Y - 0.329
(35) ESTABLISHED TIMING I:
720 X 400 @ 70Hz (IBM,VGA)
640 X 480 @ 60Hz (IBM,VGA)
640 X 480 @ 67Hz (Apple,Mac II)
640 X 480 @ 72Hz (VESA)
640 X 480 @ 75Hz (VESA)
800 X 600 @ 56Hz (VESA)
800 X 600 @ 60Hz (VESA)
(36) ESTABLISHED TIMING II:
800 X 600 @ 72Hz (VESA)
800 X 600 @ 75Hz (VESA)
832 X 624 @ 75Hz (Apple,Mac II)
1024 X 768 @ 60Hz (VESA)
1024 X 768 @ 70Hz (VESA)
1024 X 768 @ 75Hz (VESA)
1280 X 1024 @ 75Hz (VESA)
(37) Manufacturer's Reserved Timing:
1152 X 870 @ 75Hz (Apple,Mac II)
(38-53) Standard Timing Identification:
1680 X 1050 @75Hz
1280 X 1024 @60Hz

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1280 X 960 @60Hz
1152 X 864 @75Hz
Not Used
Not Used
Not Used
Not Used
______________________________________________________________________
(54-71) Detailed Timing / Descriptor Block 1:
1680x1050 Pixel Clock: 146.25 MHz
______________________________________________________________________
Horizontal Image Size: 433 mm Vertical Image Size: 271 mm
Refreshed Mode: Non-Interlaced Normal Display - No Stereo

Horizontal:
Active Time: 1680 pixels Blanking Time: 560 pixels
Sync Offset: 104 pixels Sync Pulse Width: 176 pixels
Border: 0 pixels Frequency: 65.29 KHz

Vertical:
Active Time: 1050 lines Blanking Time: 39 lines
Sync Offset: 3 lines Sync Pulse Width: 6 lines
Border: 0 lines Frequency: 59.95 Hz

Digital Separate, Horizontal Polarity (-) Vertical Polarity (+)
______________________________________________________________________
(72-89) Detailed Timing / Descriptor Block 2:

Monitor Serial Number:
Q6Y050100001
______________________________________________________________________
(90-107) Detailed Timing / Descriptor Block 3:

Monitor Range Limits:
Min Vertical Freq - 50 Hz
Max Vertical Freq - 75 Hz
Min Horiz. Freq - 30 KHz
Max Horiz. Freq - 82 KHz
Pixel Clock - 210 MHz
Secondary GTF - Not Supported
______________________________________________________________________

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(108-125) Detailed Timing / Descriptor Block 4:

Monitor Name:
VX2025wm

(126) No Extension EDID Block(s)
(127) CheckSum OK

5.2. Digital EDID: Digital EDID is stored in IC4.

Appendix F : Digital EDID

______________________________________________________________________
EDID Block 0, Bytes 0-127
128 BYTES OF EDID CODE:
0 1 2 3 4 5 6 7 8 9
________________________________________
0 | 00 FF FF FF FF FF FF 00 5A 63
10 | 1D E5 01 01 01 01 01 0F 01 03
20 | 80 2B 1B 78 2E CF E5 A3 5A 49
30 | A0 24 13 50 54 BF EF 80 B3 0F
40 | 81 80 81 40 71 4F 31 0A 01 01
50 | 01 01 01 01 21 39 90 30 62 1A
60 | 27 40 68 B0 36 00 B1 0F 11 00
70 | 00 1C 00 00 00 FF 00 51 36 59
80 | 30 35 30 31 30 30 30 30 31 0A
90 | 00 00 00 FD 00 32 4B 1E 52 11
100 | 00 0A 20 20 20 20 20 20 00 00
110 | 00 FC 00 56 58 32 30 32 35 77
120 | 0A 20 20 20 20 20 00 6A
______________________________________________________________________
(08-09) ID Manufacturer Name ________________ = VSC
(11-10) Product ID Code _____________________ = E51D
(12-15) Last 5 Digits of Serial Number ______ = Not Used
(16) Week of Manufacture _________________ = 01
(17) Year of Manufacture _________________ = 2005
(10-17) Complete Serial Number ______________ = See Descriptor Block
(18) EDID Version Number _________________ = 1
(19) EDID Revision Number ________________ = 3
(20) VIDEO INPUT DEFINITION:
Digital Signal
Non - VESA DFP 1.x Compatible

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(21) Maximum Horizontal Image Size ________________ = 430 mm
(22) Maximum Vertical Image Size __________________ = 270 mm
(23) Display Gamma ________________________________ = 2.20
(24) Power Management and Supported Feature(s):
Active Off/Very Low Power, Standard Default Color Space,
Preferred Timing Mode
Display Type = R/G/B Color
(25-34) CHROMA INFO:
Red X - 0.640 Green X - 0.288 Blue X - 0.144 White X - 0.313
Red Y - 0.352 Green Y - 0.628 Blue Y - 0.076 White Y - 0.329
(35) ESTABLISHED TIMING I:
720 X 400 @ 70Hz (IBM,VGA)
640 X 480 @ 60Hz (IBM,VGA)
640 X 480 @ 67Hz (Apple,Mac II)
640 X 480 @ 72Hz (VESA)
640 X 480 @ 75Hz (VESA)
800 X 600 @ 56Hz (VESA)
800 X 600 @ 60Hz (VESA)
(36) ESTABLISHED TIMING II:
800 X 600 @ 72Hz (VESA)
800 X 600 @ 75Hz (VESA)
832 X 624 @ 75Hz (Apple,Mac II)
1024 X 768 @ 60Hz (VESA)
1024 X 768 @ 70Hz (VESA)
1024 X 768 @ 75Hz (VESA)
1280 X 1024 @ 75Hz (VESA)
(37) Manufacturer's Reserved Timing:
1152 X 870 @ 75Hz (Apple,Mac II)
(38-53) Standard Timing Identification:
1680 X 1050 @75Hz
1280 X 1024 @60Hz
1280 X 960 @60Hz
1152 X 864 @75Hz
640 X 400 @70Hz
Not Used
Not Used
Not Used
______________________________________________________________________
(54-71) Detailed Timing / Descriptor Block 1:

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

1680x1050 Pixel Clock: 146.25 MHz
______________________________________________________________________
Horizontal Image Size: 433 mm Vertical Image Size: 271 mm
Refreshed Mode: Non-Interlaced Normal Display - No Stereo

Horizontal:
Active Time: 1680 pixels Blanking Time: 560 pixels
Sync Offset: 104 pixels Sync Pulse Width: 176 pixels
Border: 0 pixels Frequency: 65.29 KHz

Vertical:
Active Time: 1050 lines Blanking Time: 39 lines
Sync Offset: 3 lines Sync Pulse Width: 6 lines
Border: 0 lines Frequency: 59.95 Hz

Digital Separate, Horizontal Polarity (-) Vertical Polarity (+)
______________________________________________________________________
(72-89) Detailed Timing / Descriptor Block 2:

Monitor Serial Number:
Q6Y050100001
______________________________________________________________________
(90-107) Detailed Timing / Descriptor Block 3:

Monitor Range Limits:
Min Vertical Freq - 50 Hz
Max Vertical Freq - 75 Hz
Min Horiz. Freq - 30 KHz
Max Horiz. Freq - 82 KHz
Pixel Clock - 170 MHz
Secondary GTF - Not Supported
______________________________________________________________________
(108-125) Detailed Timing / Descriptor Block 4:

Monitor Name:
VX2025wm

(126) No Extension EDID Block(s)
(127) CheckSum OK

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

6. THEORY OF OPERATION

This section describes the function of the LCD monitor per functional block.
This monitor includes MB board, power board, Inverter board and button board.

6.1 MB BOARD

The MB board is a two-layer, single-landed. 12V DC power from the power adapter enters the board
through connector CN6. Other connectors on the board are for audio speaker and button board .The VGA
cable is a signal cable that contains video signal, sync signal and DDC signal from PC VGA adapter. This
system board consists of 4 functional areas: flat panel controller, flash ROM, power regulator and Audio
amplifier

6.1.1 Flat panel controller… NT68563HF (IC2)
The heart of the system board is the scalar chip of NT68563HF. The scaler is a highly integrated flat panel
display controller that interfaces analog, digital, and video inputs. It combines a triple ADC, a DVI
compliant TMDS receiver, a multi-color on screen display (OSD) controller and many other functions in a
single chip. It provides user a simple, flexible and cost-effective solution for various flat panel display
products.
The NT68563HF operates at frequencies up to 205MHz (analog only), suitable for LCD monitor up to
UXGA resolution. The NT68563HF also build-in noise reduction function to provide more stable video
quality, spread spectrum to provide low EMI solution, sRGB for video color space convert, post pattern for
manufacture test.

a) Clock Generation:
This is the input pair to an internal crystal oscillator and corresponding logic. A 12.000 MHz crystal is
recommended.

b) Hardware Reset (Pin127):
Hardware Reset signal is provided by MCU (IC3), it is active high.

c) Analog to Digital Converter:
The NT68563HF chip has triple ADC's (analog-to-digital converters), one for each color (red, green and
blue) .The analog RGB and synchronous signals are connected to NT68563 as described below:

Pin Name Pin Number
Red + 25
Red - 26
Green + 23
Green - 24
Blue + 20
Blue - 21
H sync 39
V sync 40

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d) Internal OSD: Internal SRAM allows up to 2048 characters, with programmable OSD frame size.

Width is 64 columns, and Height is 32 row.

e) On chip TMDS receiver: The NT68563HF integrated TMDS receiver, which operates up to 165MHz

and can directly connect to all DVI compliant TMDS transmitters. The TMDS signals are connected
to NT68563HF as described bellow:

Pin Name Pin NO.
TX0+ 9
TX0- 8
TX1+ 6
TX1- 5
TX2+ 3
TX2- 2
TXC+ 11
TXC- 12

6.1.2 Mcu flash ROM
This is an 8031 CPU core embedded micro-controller, which is design for high-performance low-cost LCD
monitor control application. It contains an 8-bit 8031 micro-controller, on-chip 64 K bytes flash-type
program ROM, 1,280-bytes internal data memory, four 7-bit resolution A/D Converter, 10-channel 8-bit
resolution PWM DAC, two 16-bit timer/counters, and a UART.
a) PWM controlling function (Pin 8, Pin 9): The MCU 68F633 has two GPIO to control audio volume and
back light brightness.

b) Serial interface ports pin 25~26(DVI) and pin 27~28(VGA): This serial interface ports communicate

with MCU and support up to 400Kbit per second transmit rate.

6.1.2 Power Regulator AIC1563 (U1), AIC1117 (U3, U4, U5): The AIC1563 is a monolithic control IC
containing the primary functions required for DC-to-DC converters. The device consists of an internal
temperature compensated reference, comparator, controlled duty cycle.
Oscillator with an active current sense circuit, desired output voltage are determined by the equation,
Volt = 1.25 *(1 + R121 / R122), in this case, the output voltage are 5 Volts
AIC1117 (U3, U4, U5): The AIC1117 is a low dropout positive adjustable regulator with minimum of 800mA
output current capability.
So it is well suited for 3.3 V and 2.5 V Regulator.
U5 as a 1.8V regulator, desired output voltage are determined by the equation
Volt=1.25 x (1 + R90/R88) = 1.8
U3 as a 3.3V regulator, desired output voltage are determined by the equation
Volt=1.255 x (1+ R86/R85) = 3.3
U4 as a 3.3V regulator, desired output voltage are determined by the equation
Volt=1.255 x (1+ R89/R87) = 3.3

ViewSonic Corporation Confidential - Do Not Copy VX2025wm -1

6.2 Audio Amplifier UTC TDA7496L (U9)

The TDA7496L is a stereo 2W+2W class AB power amplifier; Features of the TDA7496L include linear
volume control, Stand-by and mute functions.

6.3 Inverter Board
This is a specific inverter for VA2012 monitor 40W backlight which converters 20Vdc to drive 6 tubes cold
cathode fluorescent tubes. Electrical specification described as below.

6.3.1 Inverter Electrical specification described as below.
INPUT

Rated Input Voltage 20Vdc
Input Voltage Range 18.5~21.5Vdc
Input Current <2A
Off state Input Power <0.1W
On / off control Voltage 2~5.25 for on, 0~0.2 for off

OUTPUT

Rated Output Strike-on Voltage 1500~2000Vrms
Rated Output Voltage 710Vrms at 6mA
Rated Output Frequency 40~50KHz
Rated Output Current 6~7mA

6.4 This is a general purpose AC / DC adapter which converter 90~240 Vac to a stabilized DC voltage
20V for inverter and 12V for system board with rated output current of 4.16A

6.4.1 Power Electrical specification described as below.

INPUT

Rated Input Voltage 90~264Vac, 47~63Hz
Operation Input Voltage 100~240Vac, 50~60Hz
Input Current <1.5A@90Vac
Inrush Current <80A @ 230Vac(Cold start)

OUTPUT

Output Voltage Regulation +/-5%
Output Ripple and Noise 300 mVp-p
Rated Output Current <4.16A
Turn-on Delay <3 seconds

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

5. Adjustment Procedure

1. Function test

(1) Test equipment

Color video signal and pattern generator (or PC with SXGV resolution)

(2) Test condition
Before function testing and alignment, the unit must warm up for at least 30 minutes under the following
conditions:

1. Room temperature

2. With full-white screen , RGB , black pattern

3. with cycled display modes.

2. Test display modes

Item Timing Analog Digital

1 640 x 350 @ 70Hz, 31.5kHz Yes Yes
2 640 x 400 @ 60Hz, 31.5kHz Yes Yes
3 640 x 400 @ 70Hz, 31.5kHz Yes Yes
4 640 x 480 @ 60Hz, 31.5kHz No Yes
5 640 x 480 @ 67Hz, 35.0kHz Yes Yes
6 640 x 480 @ 72Hz, 37.9kHz Yes Yes
7 640 x 480 @ 75Hz, 37.5kHz Yes Yes
8 640 x 480 @ 85Hz, 43.27kHz No No

9 720 x 400 @ 70Hz, 31.5kHz Yes Yes
10 800 x 600 @ 56Hz, 35.1kHz Yes Yes
11 800 x 600 @ 60Hz, 37.9kHz Yes Yes
12 800 x 600 @ 75Hz, 46.9kHz Yes Yes
13 800 x 600 @ 72Hz, 48.1kHz Yes Yes
14 800 x 600 @ 85Hz, 53.7kHz No No
15 832 x 624 @ 75Hz, 49.7kHz Yes Yes
16 1024 x 768 @ 60Hz, 48.4kHz Yes Yes
17 1024 x 768 @ 70Hz, 56.5kHz Yes Yes
18 1024 x 768 @ 72Hz, 58.1kHz Yes Yes
19 1024 x 768 @ 75Hz, 60.0kHz Yes Yes
20 1024 x 768 @ 85Hz, 68.67kHz No No
21 1152 x 870 @ 75Hz, 68.7kHz Yes Yes
22 1280 x 1024 @ 60Hz, 63.4kHz Yes Yes
23 1280 x 1024 @ 75Hz, 79.97kHz Yes Yes
24 1280 x 720 @ 60Hz, 45kHz Yes Yes
25 1680 x 1050 @ 60Hz, 65.3kHz Yes Yes
26 1680 x 1050 @ 75Hz, 82.3kHz Yes No

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

3. Test pattern

Item Test condition Pattern Specification Remark

1 Frequency &

performance

2 Monitor saturation 16-gray scale

3 RGB color

performance

Cross-hatch
pattern

No noise is allowed, all colors must be
clear
3 to 4 levels must be saturated when

pattern

brightness and contrast are set to 100%

RGB color Check the color temperature of RGB

signal color

Pattern 1

Pattern 2

Pattern 3, 4, 5

4 Sub-pixel defect RGB color Check the sub-pixel defect Pattern 3, 4 , 5
5 Full white Full white Check the brightness and contrast ratio,

Pattern 6

and check for bright pixel defects

6 Full black Full black Pattern 7

7. 5-cycle pattern 5-cycle pattern Check the BU Pattern 8

8. 1-dot pattern 1-dot pattern Check the flicker Pattern 9

Pattern 1 Pattern2

Pattern 3 Pattern4

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

Pattern 5 Pattern6

Pattern 7 Pattern 8

Pattern 9

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

Firmware update procedure:

When you received a received monitor , please check whether the firmware version. If not , please following
procedure to upgrade to the latest version .

1. Equipment needed :

- VX2025wm

- PC ( Personal computer )

- LPT cable (TWO FEMALE)

- Fixture (ISP)

- Firmware upgrade program

2. Connection :

To PC

To Monitor

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

Appendix A : How to install the software for ISP :

0. To setup ISP environment :

Hardware:
PC or notebook, parallel(printer) cable, ISP tooling.
Software:
If OS was Win2000 or WinXP , please install “PORT95NT.exe”

In order to ensure can execute ISP program, please set BIOS in PC or Notebook as Fig 0.0

Fig 0.0

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

1. Install ISP

1.1 User could download ISP software - EasyWirter

1.2 double click the file of EasyWriterV2.10p2.exe to install.

Fig 1.0

1.3 Press “ Next “ button to continue , see Fig 1.1

Fig 1.1

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

1.4 Keep default setting or press “ Change “ button for selecting the path that you want , and then press
“Next “ button to continue , see Fig 1.2

Fig 1.2

1.5 Press “ Install “ button to continue , see Fig 1.3

Fig 1.3

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

1.6 Press “ Next “ button to continue , see Fig 1.4

Fig. 1.4

1.7 Installation has finished , press “ Finish “ button , see Fig 1.5

Fig. 1.5

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

Appendix B : Use ISP to program MCU

2.1 press “ Load Hex “ button to load the hex file , see fig2.1

Fig.2.1

2.2 Select item 4“4.NT68F633(64k) IC , see fig2.2

Fig.2.2

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

2.3 press “ Auto “ button to continue , see fig2.3

Fig. 2.3

2.4 Check the status is “Auto Process Finished” and show 100% in the bar, see fig2.4

Fig. 2.4

2.4 If show “ Can’t enter ISP mode!” message, please re-check all ISP connection is ready, see fig2.5

Fig. 2.5

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

Disassembly procedure

take out LCD(1)

put lcd on the desk with sponge(2)

tear off yellow tape and uninsert lcd cabel(10)

unlock pcb'a screw and uninsert power cabel(11)

unlock stand screw(3)

unlock stand screw(4)

take out pcb'a(12)

pull out cable from pcb'a(13)

unlade lcd cover with a fixture(5)

unlock gnd plate and take out pcb holder(14)

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34

unlock shielding screw(6)

tear off AL FOIL(16)

pull out CCFT CABLE(7)

tear off yellow tape and uninsert lcd cabel(15)

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

unlock button/b screw(8)

unlock bezel screw(17)

35

unlock bkt L/R screw(18)pull out button/b cable from button/b connector(9)

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36

Packing method

(1) stick lcd film

美紋膠帶

1-1 1-2

(2) cover PE BAG

(4) put lcd in carton

注意PANEL面朝

向

(5) put cable&base&manual&assemble handle

(3) assemble END CAP R/L

VGA

CABLE&DVI

CABLE

MANUAL

HANDLE

BASE

(6) accessories check&cover carton

POWER

CABLE&AUD

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37

6. Troubleshooting Flow Chart

No Power

No Power

Check CN6 pin 1,2

12V correct?

Check U4,U3 pin2

3.3V correct?

Check U5 pin 2

1.8V correct?

Change power

board

Change U3,U4

Change U5

Check Y1

frequency 12MHz

Change Y1

Change M/B

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

No Audio

No Audio Output

OK

Check input signal
J1 OK?

OK

Check CN7 to
speaker OK?

OK

Check CN6 pin 1,2
12V correct?

OK

NO

NO

NO

Check input source
or change J1

Change speaker

Change power
board module

Check U6 pin 6
Volume and

Check U6
pin12(mute),p11(stby)

Q7

OK

OK

NO

NO

Change Q7

Change U6

Change M/B

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39

Display color abnormal

Display color abnormal

Check panel cable?

OK

Check open/short

of IC2?

OK

Check panel power

supply of Q4

NO

NO

NO

Change panel cable

Repair open/short

Change Q4

OK

Check panel

NO

Change panel

OK

Change M/B

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40

7. Recommended Spare Parts List

RECOMMENDED SPARE PARTS LIST (VX2025wm-1)

ViewSonic Model Number: VS10859
Serial No. Prefix: Q6Y Rev: 1b

Item ECR/ECN ViewSonic P/N Ref. P/N Location Universal number#

1 Accessories: Power Cord 1.8M(USA)B Added on 09/06/06 A-PC-0106-0224 DM333181G97 power cord

PC Board

2 Button Board Assembly B-00005207 1SL9V0BB003 button board

Assembly:

3 Inverter Board (INV Module (SEL)W0E(20V,I=6MA) GP) B-00005205 AS023360D18 Inverter board

4
5 Part # on 09/07/06 10W0VXMB001 main board
6 Power Supply Board B-00006115 AS08B532017 power board

Cabinets:

7 Front Panel (W0VX LCD Bezel Sub Assembly) C-00005208 34W0VXLB009 front bezel assembly
8 Back Cover C-00005209 35W0VXLS008 back cover assembly

9 Cover I/O Cover L9V(EBL9V003,Rev3A) M-CV-0830-2593 EBL9V003011 I/O cover
10 Update Vendor & C-00006705
11 VS # on 09/07/06 C-00001778 EBL9V002015 stand cover

Cables:

12 Audio Cable (ST,1.8M) Black W9ZA GP CB-00005211 DDW9ZAPA009 audio cable
13 Cable MB-BUTTON(8P/11P,240MM)W0VX GP CB-00005210 DDW0VXBU006 Button-M cable
14 Cable Assy (Cable Assembly MB-VGA) CB-00002602 DDL7VDPC005 VGA cable
15 Wire Cable (MB-INV) CB-00004151 DD0W0EIV008 MB-INV cable
16 Wire Cable (MB-LCD) CB-00004152 DD0L9VLC023 MB-LCD cable
17 DVI cable CB-00003440 DD0L0TTH108 DVI cable

Documentation:

18 Updated Vendor DC-00005212 HGW0VX03015
19 Part # on 09/07/06 HGW0VX04011 user guide

Electronic

20 LCD Module (TFT) 20" M201EW01 V.0 GP E-00005214 AAM201EW007 LCD panel

Components:

21
22 Updated Vendor E-00005213 DN0TE230F06
23 Part # on 09/07/06 DN0TE260009 speaker assembly
24 L9VDQ-4 HINGE COVER SUB ASSY GP HW-00005216 3FL9V0HS002 hinge cover

Hardware:

25 Screw (To Assemble the Cabinet) M-SCW-0824-6802 MM30040IBJ9 panel to L/R bracket & bezel
26 Screw (To Assembly The Cabinet) M-SCW-0824-0813 MF30060BBJ6 PCBAs to metal shielding
27 Nut-MBLI1004018 IO LI1 (MBLI1004,REV3A) M-MS-0808-8986 MBLI1004018 DVI&D-SUB to shielding

Miscellaneous:

28 Rubber Plug M-MS-0808-9815 GAL9V002014 rubber plug vesa
29 LCD Film Rev 3A M-00004158 JXW0ZB01019 LCD panel

Packing Material:

30 Update Vendor P-00005217 HFW0VX03014
31 Part # 09/07/06 HFW0VX01011 carton
32 Foam-End Cap (Left) P-00005218 HBW0VX01018 cushion
33 Foam-End Cap (Right) P-00005219 HBW0VX02014 cushion
34 EPE Bag-L9VD (HAL9V002,REV3A) M-MS-0808-9817 HAL9V002014 PE bag
35 Plastics: Pedestal (FAL9V006,Rev.3A) Added on 09/06/06 PL-00008022 FAL9V006010 base

Main Board Assembly (W0VA M/B ASSY (Novatek 68563)
GP) Updated Vendor B-00005206

Base Cover-R/C ABS 41 S7RB1At

CD-Rom (W0VX-A(HGW0VX03,REV3A) GP)

LCD Module (TFT) 20"M201EW01 V.3(WSXGA/8MS)

SPEAKER ASSY WOVX-A FG-TE260 GP

CARTON W0VX-A(HFW0VX03,REV3A) GP

Description

Added on 09/06/06

1SW0VXMB016

37W0VXSU001

E-00008048 AAM201EW040

LCD panel

P-Model for VSI

Item ECR/ECN ViewSonic P/N Ref. P/N Location Universal number#

1 Accessories: POWER CORD SP-305+IS-14 3P 1.8M(TWN)B GP A-00003642 DM33T181004 power cord

G-Model for VSCN

Item ECR/ECN ViewSonic P/N Ref. P/N Location Universal number#

1 Accessories: POWER 3P 1.8M(CHN)Y546B300012180QD GP A-PC-0106-0306 DM333181S01 power cord

Documentation:

2 QC-PASS LABEL L7VC(HCL7V026,REV3A)GP DC-00003444 HCL7V026017 QC-PASS LABEL

3 VSCN WARRANTY CARD W0VA(HDW0VA01,R3A) GP DC-00005215 HDW0VA01011 VSCN WARRANTY

4 WARRANTY STICKER L7VC(HCL7V023,R3A)GP M-00003446 HCL7V023018 WARRANTY STICKER

5 ADDRESS LABEL L7VC(HCL7V024,REV3B) DC-00003443 HCL7V024014 ADDRESS LABEL

E-Model for VSE

Item ECR/ECN ViewSonic P/N Ref. P/N Location Universal number#

1 Accessories: POWER CORD SP-023+IS-14 1.8M(B)EU GP A-PC-0106-0227 DM333181801 power cord

Remark 1:

Above listed items are examples, supplier can expand the rows to add more necessary items.
All revised RSPLs with newly added items or any change made should be highlighted and correlated with the ECN/ECR approved by ViewSonic Corporation. This is to eliminate repeated cross

Remark 2:

checks of each item between this version and prior versions.

Description

Description

Description

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

ViewSonic Model Number: VS10859

BOM LIST (VX2025wm-1)

Rev: 1b

Serial No. Prefix: Q6Y

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

1 N/A 1LW0VXXVS47 W0VX LCD MONITOR(TWN) GP
2 N/A 1LW0VXXVS21 W0VX LCD MONITOR(EU) GP
3 N/A 1LW0VXXVS04 W0VX LCD MONITOR(USA) GP
4 N/A 1LW0VXXVS39 W0VX LCD MONITOR(CHN) GP
5 N/A 21W0VAMB029 W0VA-A M/B ASSY (NOVATEK 68563H) GP 1
6 N/A 31W0VASS024 W0VA-A M/B S/S ASSY (NT 68563H)GP 1
7 N/A DFDS15FR041 CONN D-SUB 15P 3R FR(P1.15,H12.55) GP CN1 1
8 N/A DFDI30FR022 CONN DVI-I DIP30P 3R FR(P1.905 H10.04)GP CN2 1

9 N/A DFDI30FR103 CONN DVI-I DIP30P 3R FR(P1.905,H10.04)GP CN2 1
10 N/A DFHD11MR001 CONN DIP HEADER 11P 1R MR(P2.0,H4.1) GP CN3 1
11 N/A DFHD30MR267 CONN DIP HEADER 30P 2R MR(P2.0,H4.0) GP CN4 1
12 N/A DFHD08FR102 CONN DIP HEADER 8P 2R FR(P2.54,H5.0) GP CN6 1
13 N/A DFHD04MR132 CONN DIP HEADER 4P 1R MR(P2.0,H4.1) GP CN7 1
14 N/A CC647T1MD05 CAP EC 47U 10V(+-20%,105C,5*11,2000H)GP C36 1
15 N/A CC71004MD09 CAP ELEC DIP 100U 25V(+-20%,105C,6*7) GP C68,C69,C70,C71 4
16 N/A CC73303MD69 CAP ELEC DIP 330U 16V(+-20%,105C,8*9) GP C30,C46,C53,C66,C67,C74,C76,C80,C82 9
17 N/A CC810T1MD05 CAP EC 1000U6.3V(+-20%,105C,8*11.5) GP C60 1
18 N/A BG612000202 XTAL DIP 12MHZ(+-30PPM,HC-49/S TYPE) GP Y1 1
19 N/A DFTJ05FR037 CONN DIP PHONE JACK 5P FR(J303-1-A-G+)GP J1 1
20 N/A DC04725K011 CHOKE COIL 47UH(2.5A,+-10%,T07473 GP) GP L14 1
21 N/A AL007496D02 IC(20P) TDA7496L(DIP) GP U6 1
22 N/A AL007496D29 IC(20P) UTC TDA7496LK(DIP) GP U6 1
23 N/A 23L7VDBB001 L7VD BUTTON/B ASSY GP 1
24 N/A DFHD08MR319 CONN DIP HEADER 8P 1R MR(P2.0,H4.1) GP CN1 1
25 N/A BEYG0014DA0 LED(DIP) YELLOW/GREEN(L-3WYGW-F01) GP LED1 1
26 N/A DAL7VDTB113 PCB(BUTTON) L7VD TL(1L,180*15,REVA) GP 1
27 N/A DHP0002B205 SWITCH PUCH BUTTON(PT-002-B2,50MA,12V)GP SW1,SW2,SW3,SW4,SW5 5
28 B-00006115 AS08B532017 PWR MODULE(DTA)EADP-64CF BA,90~264V GP 1
29 B-00005205 AS023360D18 INV MODULE(SEL)W0E(20V,I=6MA) GP 1
30 N/A 24W0VXLB017 W0VX-A LCD BEZEL ASSY GP 1
31 C-00005208 34W0VXLB009 W0VX LCD BEZEL SUB ASSY GP 1
32 N/A FBL9V011014 LCD PANEL LOCK METAL L9VDQ(R3A)GP 2
33 N/A FAW0VX01017 PCB SHIELDING W0VX(FAW0VX01,REV3A) GP 1
34 N/A FAW0VX02013 LCD BKT-R W0VX(FAW0VX02,REV3A) GP 1
35 N/A FAW0VX03010 LCD BKT-L W0VX(FAW0VX03,REV3A) GP 1
36 M-MS-0808-9248 FCL7A001014 AL FOIL L7A(FCL7A001,REV3A) GP 4
37 M-SCW-0824-6802 MM30040IBJ9 SCREW M3.0*4.0-I(NI) GP 9
38 M-SCW-0824-0813 MF30060BBJ6 SCREW F3.0*6-B(NI)GP 10
39 N/A MF30080IBJ0 SCREW F3.0*8-I(NI)GP 4
40 M-SCW-0824-6799 MM35080BBW2 SCREW M3.5*8-B (NI,WASHER)GP 1
41 M-MS-0808-8986 MBLI1004018 IO NUT LI1(MBLI1004,REV3A)GP 4
42 N/A FBL5T009018 AL-FOIL(40-47) L5TD(FBL5T009,REV3A) GP 2
43 N/A MM30030IBJ4 SCREW M3*3-I-NI GP 4
44 N/A FCL7G001016 AL FOIL L7G(FCL7G001,REV3A)HAN GP 2
45 N/A 25W0VXLC006 W0VX LCD COVER ASSY 1
46 C-00005209 35W0VXLS008 W0VX LCD COVER SUB ASSY GP 1
47 N/A 26W0VXSA007 W0VX STAND ASSY GP 1
48 C-00006705 37W0VXSU001 W0VX STAND SUB ASSY GP 1
49 N/A 27W0VXCS013 W0VX-A CHASSIS ASSY GP 1
50 N/A 3FL9V0HS002 L9VDQ-4 HINGE COVER SUB ASSY GP 1
51 N/A FCW0VX01019 POWER MYLAR W0VX(FCW0VX01,REV3A) GP 1
52 C-00001778 EBL9V002015 STAND COVER R L9V(EBL9V002,REV3A)GP 1
53 M-CV-0830-2593 EBL9V003011 I/O COVER L9V(EBL9V003,REV3B)GP 1
54 M-MS-0808-9815 GAL9V002014 RUBBER PLUG VESA L9V(GAL9V002,REV3A)GP 4
55 M-SCW-0824-6859 MM40060IL69 SCREW M4*6-I (BNI)(NYLOK))GP 4
56 M-SCW-0824-0795 MM40080BCI5 SCREW M4.0*8-B(NI,NYLOK)GP 4
57 M-SCW-0824-6894 MF30060BJ28 SCREW F3.0*6-B(BNI)GP 2
58 CB-00004152 DD0L9VLC023 CABLE LVDS(30P,140MM,LINKTEC,AU)L9VA GP 1
59 CB-00004151 DD0W0EIV008 CABLE MB-INV(7P/8P,320MM)W0E GP 1
60 E-00005213 DN0TE260009 SPEAKER ASSY WOVX-A FG-TE260 GP 1
61 CB-00005210 DDW0VXBU006 CABLE MB-BUTTON(8P/11P,240MM)W0VX GP 1
62 N/A 2AW0VXPTA12 W0VX PANEL DEPENDENT KIT(AUO)GP 1
63 E-00008048 AAM201EW040 LCD(TFT) 20"M201EW01 V3(WSXGA/8MS) GP 1
64 N/A AAM201EW066 LCD 20" M201EW01 V.3 FOR VSC CON GP 1
65 N/A AZW0VXBA011 W0VX SW BIOS(NOVATEK,W/AUDIO)FOR AUO 1
66 N/A GAL7E002013 LCD RUBBER L7E(GAL7E002,REV3B)GP 1
67 N/A 28W0VXPK011 W0VX-A PACKING ASSY(VX2025W) GP 1
68 CB-00002602 DDL7VDPC005 CABLE MB-VGA (15/15P,1.8M)L7VD GP 1
69 CB-00005211 DDW9ZAPA009 CABLE AUDIO(ST,1.8M)BLACK W9ZA GP 1
70 CB-00003440 DD0L0TTH108 CABLE ASSY L0T MB-DVI(24P,REV2A) GP 1
71 M-MS-0808-9817 HAL9V002014 EPE BAG L9VD(HAL9V002,REV3A)GP 1
72 P-00005218 HBW0VX01018 END CAP(L) W0VX(HBW0VX01,R3A) GP 1
73 P-00005219 HBW0VX02014 END CAP(R) W0VX(HBW0VX02,R3A) GP 1
74 M-LB-0813-0747 HCL7V004013 CORE LABEL(HCL7V004,REV3A)GP 1
75 N/A HCW0VX02015 ID LABEL W0VX-A(HCW0VX02,REV3A) GP 1
76 M-LB-0813-0745 HCL7V002011 SERIAL LEBAL L7V(HCL7V002,REV3A) GP 1
77 M-LB-0813-1042 HCL7V019011 CARTON LABEL L7VC(HCL7V019,REV3B) GP 1
78 P-00005217 HFW0VX03014 CARTON W0VX-A(HFW0VX03,REV3A) GP 1
79 DC-00005212 HGW0VX03015 CD+QSG W0VX-A(HGW0VX03,REV3A) GP 1
80 PL-00005198 JXLM5003011 HANDLE LM5S(JXLM5003,REV 3B) GP 1
81 M-00004158 JXW0ZB01019 LCD FILM W0ZB-A1(JXW0ZB01,REV3A)GP 1
82 M-LB-0813-1043 HCL70021011 HI-POT LABEL L70L(HCL70021,REV3A)GP 1
83 N/A HFL7V009018 SPACE PLATE L7VC(HFL7V009,REV3B)GP 0.063
84 N/A HDW0VX01010 ENERGY STAR NOTICE W0VX(HDW0VX01,R3A)GP 1
85 N/A HCL7VC07016 BLANK LABEL L7VC(HCL7VC07,R3A)8*35MM GP 2
86 N/A HCL9V020014 3C LABEL L9V(HCL9V020,REV3A)8MM 1
87 DC-00003444 HCL7V026017 QC-PASS LABEL L7VC(HCL7V026,REV3A)GP 1

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

42

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

88 N/A HAW0VX01017 PE BAG-CHINA W0VX(HAW0VX01,REV3A) GP 1
89 DC-00005215 HDW0VA01011 VSCN WARRANTY CARD W0VA(HDW0VA01,R3A) GP 1
90 DC-00004814 HCL7V022011 CARTON STICKER L7VC(HCL7V022,REV3A)GP 1
91 M-00003446 HCL7V023018 WARRANTY STICKER L7VC(HCL7V023,R3A)GP 1
92 DC-00003443 HCL7V024014 ADDRESS LABEL L7VC(HCL7V024,REV3B) 1

93 A-PC-0106-0306 DM333181S01 POWER 3P 1.8M(CHN)Y546B300012180QD GP
94 A-PC-0106-0224 DM333181G97 POWER CORD 3P 1.8M(USA)V04VS350012180 GP
95 A-PC-0106-0227 DM333181801 POWER CORD SP-023+IS-14 1.8M(B)EU GP
96 A-00003642

DM33T181004

POWER CORD SP-305+IS-14 3P 1.8M(TWN)B GP

1
1
1
1

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

43

8. Exploded Diagram and Exploded Parts List

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

44

Y

EXPLODED PARTS LIST (VX2025wm-1)

ViewSonic Model Number: VS10859
Rev: 1b

Serial No. Prefix: Q6

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

1 M-MS-0808-9243
2 M-MS-0808-9402 FEL7V007014 BIRD LOGO L7VD(FEL7V007,REW3A)GP 1
3 N/A EAW0VX01017 LCD MARK WOVX(EAW0VX01,REV3A)GP 1
4 N/A EAW0VX02013 LCD BEZEL W0VX(EAW0VX02,REV3A) GP 1
5 M-SCW-0824-6802 MM30040IBJ9 SCREW M3.0*4.0-I(NI) GP 9
6 E-00005213 DN0TE230F06 SPEAKER ASSY L9VDQ FG-TE230 GP
7 N/A EBL9V004018 CONTROL BUTTON L9VDQ-4(EBL9V004,R3A) GP 1
8 M-MS-0808-9401 EBL7V028019 LENS L7VD(EBL7V028,REV3A)GP 1

9 N/A 23L7VDBB001 L7VD BUTTON/B ASSY GP 1
10 N/A FBL9V011014 LCD PANEL LOCK METAL L9VDQ(R3A)GP 2
11 N/A MF30080IBJ0 SCREW F3.0*8-I(NI)GP 4
12 N/A MM30030IBJ4 SCREW M3*3-I-NI GP 4
13 N/A FAW0VX02013 LCD BKT-R W0VX(FAW0VX02,REV3A) GP 1
14 N/A
15 M-SCW-0824-0813 MF30060BBJ6 SCREW F3.0*6-B(NI)GP 10
16 N/A FAW0VX03010 LCD BKT-LW0VX(FAW0VX03,REV3A) GP 1
17 M-SCW-0824-6799 MM35080BBW2 SCREW M3.5*8-B(NI,WASHER)GP 1
18 N/A FCW0VA03012 INVETER MYLAR-DOWN W0VA GP 2
19 B-00005205 AS023360D18 INV MODULE(SEL)W0E(20V,I=6MA) GP 1
20 N/A
21 CB-00002525 DD0L9VLC015 CABLE MB-LCD(30P,140MM)L9V-5 GP 1
22 N/A FCW0VX01019 POWER MYLAR W0VX(FCW0VX01,REV3A) GP 1
23 B-00006115 AS08B532017 PWR MODULE(DTA)EADP-64CF BA,90~264V GP 1
24 CB-00005210 DDW0VXBU006 CABLE MB-BUTTON(8P/11P,240MM)W0VX GP 1
25 M-MS-0808-8986 MBLI1004018 IO NUT LI1(MBLI1004,REV3A)GP 4
26 CB-00004151 DD0W0EIV008 CABLE MB-INV(7P/8P,320MM)W0E GP 1
27 N/A FBL5T009018 AL-FOIL(40-47) L5TD(FB5T009,REV3A) GP 2
28 N/A FAW0VX01017 PCB SHIELDING W0VX(FAW0VX01,REV3A) GP 1
29 M-MS-0808-9248 FCL7A001014 AL FOIL L7A(FCL7A001,REV3A) GP 4
30 N/A FCL7G001016 AL FOIL L7G(FCL7G001,REV3A)HAN GP 2
31 M-MS-0808-9411 FBL70008014 LOCK METAL L70B(FBL70008,REV3A) GP 1
32 M-SCW-0824-6895 MF40080IBJ1 SCREW F4.0*8-I(NI)GP 4
33 N/A FAL9V003011 HINGE BKT L9VDQ-4(FAL9V003,REV3A) GP 1
34 N/A EAW0VX03010 LCD COVER W0VX(EAW0VX03,REV3A) GP 1
35 M-SCW-0824-6859 MM40060IL69 SCREW M4*6-I(BNI)(NYLOK) GP 4
36 M-MS-0808-9253 FEL7V005011 LOGO PLATE ELLIPSE L7VC(REV3A)GP 1
37 M-MS-0808-9815 GAL9V002014 RUBBER PLUG VESA L9V(GAL9V002,REV3A)GP 4
38 N/A HCW0VX02015 ID LABEL W0VX-A(HCW0VX02,REV3A) GP 1
39 M-CV-0830-2593 EBL9V003011 I/O COVER L9V(EBL9V003,REV3B)GP 1
40 M-LB-0813-0745 HCL7V002011 SERIAL LEBAL L7V(HCL7V002,REV3A) GP 1
41 C-BS-0303-0553 EAL9V004017 STAND BASE L9V(EAL9V004,REV3A) GP 1
42 M-MS-0808-9812 EBL9V001019 STAND COVER F L9V(EBL9V001,REV3A)GP 1
43 PL-00008022 FAL9V006010 STAND BASE L9VDQ-4(FAL9V006,REV3A) GP 1
44 N/A EAL9V005013 STAND BKT COVER L9V(EAL9V005,REV3A)GP 1
45 M-MS-0808-9811 GAL5M002011 RUBBER FOOT L5M(GAL5M002,REV3B)GP 4
46 M-SCW-0824-0813 MF30060BBJ6 SCREW F3.0*6-B(NI)GP 11
47 N/A FAW0VX04016 HINGE ASSY W0VX(FAW0VX04,REV3A) GP 1
48 M-SCW-0824-0795 MM40080BCI5 SCREW M4.0*8-B(NI,NYLOK)GP 4
49 N/A MM40060BCI6 SCREW M4.0*6-B(NI,NYLOK) GP 4
50 N/A EBL9V005014 HINGE COVER L9VDQ-4(EBL9V005,R3A) GP 1
51 M-SCW-0824-6894 MF30060BJ28 SCREW F3.0*6-B(BNI)GP 2
52 M-MS-0808-9404 EBL7V029015 WIRE CLAMP L7VD(EBL7V029,REV3A)GP 2
53 C-00001778

FEL7V003019 LOGO FRONT-VSC-38MM L7VC(REV3A)GP

AAM201EW066 LCD 20" M201EW01 V.3 FOR VSC CON GP

21W0VAMB029 W0VA-A M/B ASSY (NOVATEK 68563H) GP

EBL9V002015 STAND COVER R L9V(EBL9V002,REV3A)GP

1

1

1

1

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

45

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

46

ViewSonic Model Number: VS10859

Serial No. Prefix: Q6Y

PACKING PARTS LIST (VX2025wm-1)

Rev: 1a

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

1 A-PC-0106-0224 DM333181G97 POWER CORD 3P 1.8M 1
2 M-00004158 JXW0ZB01019 LCD FILM W0ZB-A1 1
3 #N/A HAL0V002014 EPE BAG L9VD 1
4 P-00005218 HBW0VX01018 END CAP(L) W0VX 1
5 P-00005219 HBW0VX02014 END CAP(R) W0VX 1
6 #N/A HCW0VX02015 ID LABEL W0VX-A 1
7 M-LB-0813-1042 HCL7V019011 CARTON LABEL L7VC 1
8 M-LB-0813-0747 HCL7V004013 CORE LABEL 1

9 DC-00005212 HGW0VX03015 CD+QSG W0VX-A 1
10 #N/A HDW0VA03013 (B)20''W SERV,PAPER 1
11 P-00005217 HFW0VX03014 CARTON W0VX-A 1
12 #N/A HFW0VX02018 SPACE PLATE W0VX 0.063
13 PL-00005198 JXLM5003011 HANDLE LM5S 1
14 CB-00003440 DD0L0TTH108 CABLE ASSY 1
15 #N/A DDW9ZA9A009 CABLE AUDIO 1
16 CB-00002602 DDL7VDPC005 CABLE MB-VGA 1
17 M-LB-0813-1043 HCL70021011 HI-POT LABEL L70L 1
18 M-LB-0813-0745 HCL7V002011 SERIAL LEBAL L7V 1

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

47

9. Block Diagram

LCD PANEL

LCD_VDD

+12V

TDA7496L

+3.3V

CVDD1V8(+1.8V)

MCU-VDD(+3.3V)

+3.3V +1.8V

LVDS

SCALAR NT68563HF

SDA

CSL

+5V

REFCLKI

RSTN

X'TAL

(12MHz)

MCU-VDD(+3.3V)

VGA-SDA

VGA-SCL

SI9435

LCD-ON

DVI-SDA

DVI-SCL

Mcu

NT 68F633L

SDA

MUTE

STANDBY

CSL

VOLUME

PHONE JACK

BL-ON

BL-BRIGHT

LDO

LDO

+5V+12V

LDO

STEP DOWN CONVERTER

Power Board

+20V ON/OFF ADJ

INVERTER HV

INVERTER BOARD

VGA-SDA

VGA-SCL

VGA

I/P

DVI

DVI-SDA

I/P

DVI-SCL

MCU-VDD(+3.3V)

EEPROM

24LC16

Key Pad

AC 90-264V

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

48

10. Schematic Diagrams

RX

R122
100/6/NC

MCU-VDD

R2

4.7K/6

VGA-SCL6

D3
ZD5V6/NC

1 2

GND_A

Tx6

MCU-VDD

R121

R5

4.7K/6

VGA-SDA6

100/6/NC

1 2

GND_A

D4
ZD5V6/NC

VS
HS

100/6R120

CN1
D-SUB-Female

15
14
13
12
11

DB15

-------------------------­ 1 R
2 G
3 B
4 NC
5 RETURN
6 RGND
7 GGND
8 BGND
9 +5V
10 SYNC.RETURN
11 NC
12 SDA
13 Hs
14 Vs
15 SCL

15
14
13
12
11

D-SUB1

ADC_VAA

B1

VGA-5V

17

G

10

10

5

5

9

9

4

4

8

8

B1

3

3

7

7

G1

2

2

6

6

R1

1

1

16

G

GND_A

BAV99

1K/6R3
100/6R119

VGA-DET 6
Rx 6

3

VS

R107

HS

0/6

GND_A

GND_A

ADC_VAA

ADC_VAA

R1

R106

2.2K/6/NC

R108

2.2K/6/NC

1

2

2

G1

2

3

GND_A

3

GND_A

3

GND_A

1 2

GND_A

1 2

GND_A

D1
BAV99/NC

R1
75/6

1

D2
BAV99/NC

R4
75/6

1

D5
BAV99/NC

R6
75/6

D6
ZD5V6

D7
ZD5V6

GND_A

CH201209T-300

GND_A

CH201209T-300

GND_A

CH201209T-300

C1
1000pF/6/NC

GND_A

C3
22pF/6/NC

GND_A

BEAD 30/6L1

0/6L2

BEAD 30/6L3

0/6L4

BEAD 30/6L5

0/6L6

VS

HS

BI1 5

BI1- 5

GI1 5

GI1- 5

RI1 5

RI1- 5

R8
100/6/NC

GND_A

IC1

1

D0

VCC

2

Q0

D5

3

D1

Q5

4

Q1

D4

5

D2

Q4

6

Q2

D3

7 8

GND Q3

74LVC14

R7

100/6/NC

14
13
12
11
10
9

GND_A

C2

0.1uF/6

ADC_VAA

VSIN 5

HSIN 5

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

49

ViewSonic Corporation

Model

Title

Date Rev:

ADC INPUT

CN2
DVI-I-Female

31

SHELL1

TX2/4 Shld

DDC CLK

DDC DATA

TX1/3 Shld

HP Detect

TX0/5 Shld

TXC Shld

32

SHELL2

GND_A GND_A

AR
AG
AB

AHS

AGND

NC

A VS

TX2-

TX2+

TX4-

TX4+

TX1-

TX1+

TX3-

TX3+

+5V

GND

TX0-

TX0+

TX5-

TX5+
TXC+

TXC-

C1
C2
C3
C4
C5
C6
8
1
2
3
4
5
6
7

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

DVI Input

ADC_VAA ADC_VAA ADC_VAA ADC_VAA

1

2

DVI-5V

1K/6R16

1

2

GND_A GND_A GND_A GND_A

D8
BAV99/NC

3

D14

3

BAV99/NC

3

DVI-SCL
DVI-SDA

1K/6R15

D15

3

BAV99/NC

D9
BAV99/NC

2

1

D10
BAV99/NC

3

D16

3

BAV99/NC

2

1

D11
BAV99/NC

3

D17

3

BAV99/NC

10/6R9
10/6R11

10/6R13
10/6R14

DVI-DET 6

10/6R17
10/6R18

10/6R19
10/6R20

RX2- 5
RX2+ 5

RX1- 5
RX1+ 5

RX0- 5
RX0+ 5

RXC+ 5
RXC- 5

MCU-VDD

R10

4.7K/6

1 2

GND_A

D12
ZD5V6/NC

MCU-VDD

1 2

GND_A

R12

4.7K/6

D13
ZD5V6/NC

DVI-SCL 6
DVI-SDA 6

1

2

ADC_VAA ADC_VAA ADC_VAA ADC_VAAGND_A GND_AGND_AGND_A

1

2

1

2

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

50

1

2

BAV99

ViewSonic Corporation

Model

DVI INPUT

Title

Date Rev:

VGA_3V3

CVDD1V8

L7
B0805/1K

53

86

CVDD

122

CVDD

CVDD

VGA_3V3

HSIN3
VSIN3

BI13
BI1-3

GI13
GI1-3

RI13
RI1-3

R23 75/6
R24 100/6

R25 390/6 1%
R26 75/6

R27 100/6
R28 75/6

R29 100/6

REFCLKI6

BYPASS-VS6

BYPASS-HS6

RX2+4

RX2-4

RX1+4

RX1-4

RX0+4

RX0-4

RXC+4

RXC-4

GND_A

TP1
YUV-CLK/NC

SCL6

SDA6

RSTn6

IRQn6

R22 390/6 1%

0.047uF/6C12

0.047uF/6C16

0.047uF/6C17

0.047uF/6C18

0.047uF/6C19

0.047uF/6C20

0.047uF/6C21

0.1uF/6C22

0.1uF/6C23

GND_A

1

SCL
SDA
RSTn
IRQn

REFCLKI

BYPASS-VS
BYPASS-HS

AD0
AD1

GND_A

RX2+
RX2­RX1+
RX1­RX0+
RX0­RXC+
RXC-

VREF

REXT

2

RX2+

3

RX2-

5

RX1+

6

RX1-

8

RX0+

9

RX0-

11

RXC+

12

RXC-

38

VREF

39

HSYNCI1

40

VSYNCI1/TOUTP

20

BIN1+

21

BIN1-

22

SOGI1

23

GIN1+

24

GIN1-

25

RIN1+

26

RIN1-

19

BVMID

27

RVMID

41

HSYNCI0/GPO5

42

VSYNCI0/GPO4

30

BIN0+/Y0

31

BIN0-/Y1

32

SOGI0/Y2

33

GIN0+/Y3

34

GIN0-/Y4

35

RIN0+/Y5

36

RIN0-/Y6

37

ADC_GND/Y7

51

YUV_CLK

125

SCL

126

SDA

127

RSTn

128

IRQn

45

OSCI

44

OSCO

120

IN_VSO/GPO4

121

IN_HSO/GPO5

118

AD0/GPO2

119

AD1/GPO3

ADC_VAA DVDD

DPLL

18

28

46

ADC_VAA

ADC_VAA

DPLL_VDD

IC2

NT68563HF

D/CGND

DGND

D/CGND

87

123

107

DGND

DPLL_GND

43

52

CGND

63

ADC_GNDA

29

4

AVCC

ADC_GNDA

17

131415

AVCC

PVCC

PVCC

AGND

1

L8
B0603/30

54

AGND

AGND

7

10

98

DVDD

16

72

DVDD

DVDD

PGND

116

DVDD

SPB/DISP_VS

GPO0/DISP_HS

SPA/DISP_DE

REFCKO/GPO6

GPO9/PWM1

GPO10/PWM0

T0M
T0P
T1M
T1P
T2M

T2P
TCLK1M
TCLK1P

T3M

T3P

T4M

T4P

T5M

T5P

T6M

T6P
TCLK2M
TCLK2P

T7M

T7P

GPO1
GPO7

GPO8

ADC_VAA

R21

1K/6

0.1uF/6

115

NC

114

NC

113

NC

112

NC

111

NC

110

NC

109

NC

108

NC

106

NC

105

NC

104

NC

103

NC

102

NC

101

NC

100

NC

99

NC

97
96
95
94
93
92
91
90

89
88
85
84
83
82
81

80
79
78
77
76
75
74
73
71

NC

70

NC

69

NC

68

NC

67

NC

66

NC

65

NC

64

NC

62

NC

61

NC

60

NC

59

NC

58

NC

57

NC

56

NC

55

NC

117
124
50
49
48
47

GND_A

T0M 7
T0P 7
T1M 7
T1P 7
T2M 7
T2P 7
TCLK1M 7
TCLK1P 7

T3M 7
T3P 7

T4M 7
T4P 7

T5M 7
T5P 7
T6M 7
T6P 7
TCLK2M 7
TCLK2P 7
T7M 7
T7P 7

GND_A

C4

OPTION

DVDD

0.1uF/6

0.1uF/6C70.1uF/6
C8

C9

GND_A

CVDD1V8

0.1uF/6

0.1uF/6
C26

C25

PVCC

1uF/8

C31

C10

GND_A

GND_A

1

D18

TL431CUS

0.1uF/6

0.1uF/6

C27

120pF/6

C32

3 2

GND_A

DPLL

VGA_3V3

0.1uF/6

C33

VREF

0.1uF/6

ADC_VAA

0.1uF/6

C13

GND_A

GND_A

0.1uF/6

C34

10uF/6.3V/Y5V/1206

C6

C5

0.1uF/6

C14

330uF/16V

C30

10uF/6.3V/Y5V/1206

C29

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

51

GND_A

ViewSonic Corporation

Model

Title

Date Rev:

NT68563

+

C41 22pF/6

0.1uF/6

C42

C43

0.1uF/6/NC

LEFT-

BL-ON8

R34 100K/6

MCU-VDD

GND_A

C40
22pF/6

BL-BRIGHT 8

VOLUME 9

MCU-VDD

C36 47uF/16V

GND_A GND_A

REFCLKI5

+5V

BL-PWM

+5V

VOL-PWM

MUTE-

BYPASS-VS5

R37 1M/6
Y1 12MHZ

C39
22pF/6

GND_A GND_A

R45 0/6

R49
1K/6

R51 4.7K/6

R54
1K/6

R58 4.7K/6

C37 0.1uF/6

GND_A

GND_A

R31 4.7K/6

0.1uF/6

C35

Rx3
Tx3

IRQn5

SCL
SDA

5V-DETECT
RIGHT

LEFT
BL-PWM
VOL-PWM
PANEL_SEL2
PANEL_SEL1
STANDBY

CON11P-2.0S

RIGHT- UP-

+5V

R32 4.7K/6

MUTE

PANEL_SEL3

IC3

41

PC2/SOGI

42

PC1*

43

PC0*

10

RSTB

44

VDD

12

PD6

22

GND

20
21
11
13
16
17
15
14
24
23

9
8
7
6
5 4

68F633L

OSCO
OSCI
P30/RXD
P31/TXD
P34/T0
P35/T1
PB3/ADC3/INTE1
PB2/ADC2/INTE0
PB1/ADC1
PB0/ADC0
PA7*/PWM9*
PA6*/PWM8*
PA5*/PWM7*
PA4*/PWM6*
PA3/PWM5 PA2/PWM4

NC2
NC1
PC3
PC4
PC5
PE1
PE0
PC6
PC7
PD0
PD1
PD2
PD3
PD4
PD5

PA0/PWM2
PB4*/SCL0*
PB5*/SDA0*
PB6*/SCL1*
PB7*/SDA1*

PA1/PWM3

68F633-PLCC44

MCU-VDD

R50 4.7K/6

CN3

11
10

9
8
7
6
5
4
3
2
1

MUTE- MUTE_KEY
MENU- MENU
SEL­PWR­DOWN­UP­RIGHT-

GND_A

MCU-VDD

R113

10K/6

+5V

R114

PANEL_SEL1 PANEL_SEL2

MUTE 9

33
32

MUTE_KEY

40
39
38
19
18

PWR

37
36

MENU

1

WP

35

DOWN

34
31
30

SEL

29

UP

2

R40 100/6

25

R41 100/6

26

R42 100/6

27

R43 100/6

28

LEDG1

3

LEDA1

STANDBY 9

R112 1K/6
R55 1K/6
R57 1K/6
R59 1K/6
R60 1K/6
R61 1K/6
R62 1K/6
R64 1K/6
R65 330/6
R66 330/6

DOWN- SEL- MENU-

RSTn 5
BYPASS-HS 5

LCD-ON 7

DVI-DET 4
VGA-DET 3

PWR-

DVI-SCL 4
DVI-SDA 4
VGA-SCL 3
VGA-SDA 3

SEL
PWR
DOWN
UP
RIGHT
LEFTLEFT­LEDA
LEDG

10K/6/NC

GND_A

MCU-VDD

R115

10K/6

R116

10K/6/NC

GND_A

5V-DETECT

MCU-VDD

SCL
SDA

2K/6

+5V

R36

10K/6

R39

15K/6

GND_A

R47

2K/6

LEDA1

LEDG1

R48

MCU-VDD

R117

10K/6

R118

10K/6/NC

GND_A

R52

PANEL_SEL3

GND_A

4.7K/6
R53

IC4

1

A0

2

A1

3

A2

4

GND

AT24C16

JP1

1
2
3
4

CON4/NC

4.7K/6
R56 4.7K/6

R63 4.7K/6

MCU-VDD

8

VCC

7

WP

6

SCL

5

SDA

0.1uF/6

C38

GND_A

+5V

RX

GND_A

For Debug Use

MCU-VDD

2

Q2

2

MMST3906

3 1

MCU-VDD

R109

10K/6

R111

10K/6/NC

GND_A

Q1

MMST3906

3 1

R110 22/6

JP2

1
2
3
4

CON4/NC

LEDA

LEDG

SCLTX
SDA

WP

GND_A

SCL 5
SDA 5

132

GND_A

MCU-VDD

D34

CHN217

132

D27

CHN217

132

CHN217

D28

GND_A GND_AGND_A GND_A

132

CHN217

D29

132

MCU-VDDMCU-VDD

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

52

CHN217

D30

GND_AGND_A

132

CHN217

D31

GND_A

132

MCU-VDDMCU-VDDMCU-VDD

CHN217

D32

132

MCU-VDDMCU-VDD

CHN217

D33

ViewSonic Corporation

Model

MCU(I/O_Key)

Title

Date Rev:

+3.3V

T0M5 T0P 5
T1M5 T1P 5

TCLK1M5

T3M5
T4M5

T5M5 T5P 5
T6M5 T6P 5

TCLK2M5

T7M5

R68 10K/6/NC

LCD-VDD

R70

0/6/NC

TCLK1M

T3M
T4M

T6M
TCLK2M
T7M

LCD-VDD

T0M
T1M
T2M

CN4

1
3
5
7

9
11
13
15
17
19
21
23
25
27
29

1841 30P

GND_A GND_A

2

1

2

4

3

4

6

5

6

8

7

8

10

9

10

12

11

12

14

13

14

16

15

16

18

17

18

20

19

20

22

21

22

24

23

24

26

25

26

28

27

28

30

29

30

T0P
T1P

T2P

TXB2+ T6P
TXBC+TCLK2P
TXB3+ T7P

TCLK1P
T3P
T4P

T2P 5T2M5
TCLK1P 5

T3P 5
T4P 5

T5P

TCLK2P 5
T7P 5

R69

0/6/NC

R67

10K/6/NC

+3.3V

GND_A

GND_A

Max 2.0A

+5V

L9

BEAD 120/1206

+18V

+12V

LCD-ON6

L10

BEAD 120/1206/NC

L11

BEAD 120/1206/NC

R73 4.7K/6

C44

2

2200pF/6

R71

4.7K/6

R72

2.2K/6

3

Q4

1

GND_A

MMBT3904

SI9435

Q3

2
3
4 5

LCD-VDD

+

C47

C46

330uF/16V

GND_A

GND_A

2005.06.13 modify

0.1uF/6

ViewSonic Corporation

Model

PANEL OUTPUT

81
7
6

C45

BEAD 120/1206

2200pF/6

C48

GND_A

L12

0.1uF/6

Title

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

53

Date Rev:

5V

FUSE2 0/1210/NC

1 2

L13

BEAD 120/1206/NC

D19 1SS355

GND_A

+12V

SSM12LL

D24

1 2
3
5 6

BL-BRIGHT

CN6 CONN 4x2-R

4

BL-ON

87

BL-BRIGHT 6

+

C62

100uF/25V/NC

GND_A

VGA-5V DVI-5V+5V

D23
BAT54C-GS08

L20
BEAD 120/0805

GND_A

GND_A

R82

390K/6/NC

100uF/25V

C50

C49

0.1uF/6/NC

GND_A GND_A

FUSE1 0/1210

0.1uF/6

C52

330uF/16V/NC

1 2

Max 1.2A 60mil * 3 via

BL-ON 6

10K/6

C83

GND_A

L16

1 2

100UH/NC

R81

C68

560/6/NC

+

8

DRI

7

IPK

6

VCC

U2

SC
SE
TC

GNDFB

AIC1563/NC

U4

VOUTVIN

1

ADJ/GND

LT1117/TO223

U4-A1

VOUTVIN

1

ADJ/GND

AIC1084/TO252/NC

330/6 1%

GND_A

1
2
3
45

+12V

GND_A

GND_AGND_A GND_A

23
4

4

23

R89

C53

330uF/16V

200/6 1%

R74 0/1206

0.1uF/8

C54

D22

2 1

RB081L-20/NC

C65
330pF/6/NC

R87

GND_A

13.3K/1%/NC

1K/1%/NC

+

C69
100uF/25V

1uF/8

C56

R80
1K/6 1%

GND_A

L28

BEAD 120/0805

U1

8

BOOST

7

IS

6

VCC

AIC1563

R79 3K/6 1%

C57 2200pF/6

C63

2200pF/6/NC

0.1uF/6/NC

R83

R84

MCU-VDD

C64

GND_A

231

1

DC

2

DE

3

CF

45

GNDFB

+

C61

330uF/16V/NC

GND_A

+5V

2 1

C55

GND_A GND_A

D25

2 1

RB081L-20

R75 47/6
R76 330K/6

120pF/6

+18V

D26

RB081L-20

R77

+

C70

240K/6 1%

+5V

100uF/25V

2

3 1

1K/6 1%

R78

L17
BEAD 120/0805

U5-A1

1

ADJ/GND

LT1117/TO223/NC
U5

1

ADJ/GND

AIC1084/TO252

GND_A

D20

1SS355

Q6

MMST3906

VOUTVIN

4

VOUTVIN

R90

150/6 1%

7681

Q5

C51

NDS9410A/SO

234 5

0.1uF/6

+5V

Max 2.5A 100mil * 4via

L14 47UH

D21

RB081L-20

2 1

GND_A

U3

23

VOUTVIN

1

ADJ/GND

LT1117/TO223
U3-A1

1

ADJ/GND

+

C66

330uF/16V

23
4

23

R88

330/6 1%

AIC1084/TO252/NC

+1V8

+

C71

4

VOUTVIN

R86

330/6 1%

GND_A

L21
BEAD 120/0805

100uF/25V

4

23

12

C58

1000pF/6

GND_AGND_A

VGA_3V3

R85

200/6 1%

+

C67

330uF/16V

CVDD1V8

ViewSonic Corporation

Model

Scaler Power

L15

BEAD 120/1206

0.1uF/6

C59

C60

1000uF/6.3V

GND_A

L18
BEAD 120/0805

L19
BEAD 120/0805

DVDD

ADC_VAA

Title

Date Rev:

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

54

+5V

J1

VOLUME6

ZD005D100

1
5
4
3
2

R91 1K/6

R95 2K/6

L_LINE LIN_PC

R_LINE

220pF/6

C78

AGND

R92 10K/6

31

Q7

2

MMBT3904

L23 BEAD 120/0805

1 2

1 2

L24 BEAD 120/0805

220pF/6

C79

MUTE6

R93 6K8/6

1uF/8

C72

AGND

MUTE

R96 100/6

R97 100/6

R102 10K/6

31

2

Z0415

Z0416 RIN_PC

+5V

VOLU

10K/6

R94

20K/6

20K/6

R98

R99

AGND

R103 10K/6

Q8

DTC144EUA

C75 0.47uF/6

C77 0.47uF/6

C82

330uF/16V

C81

0.1uF/8

+12V

L22 BEAD/1206

U6

4

INL

9 5

INR VAROUT_L

11

STBY

10

SVR

GND

GND

TDA7496L

123

15

16

VS

VAROUR_R

GND

GND

13

VS

OUTL

VOLUME

OUTRMUTE

GND

GND

GND

192018

VCC12

C73

0.1uF/6

C76

17

6

7

C80

1412

L26 BEAD/1206

AGND

VOLU

C74
330uF/16V

330uF/16V

SPKOUTR

330uF/16V

SPKOUTL

R100 BEAD 120/0805

R101 BEAD 120/0805

L25
BEAD 120/1206

AGND

CN7

1
2
3
4

4606-04-04P-R

+5V

R104 10K/6

STANDBY6

STANDBY

2

R105 10K/6

31

Q9

DTC144EUA

AGND

AGND

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

55

AGND

AGND

GND_A

L27 BEAD/1206

AGND

GND_A

ViewSonic Corporation

Model

Title

Date Rev:

AUDIO

11. PCB Layout Diagrams

11.1

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

56

11.2

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

57

11.3

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

58

* 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

1. Precautions and Safety Notices

2. Specification

3. Front Panel Function Control Description

4. Circuit Description

5. Adjustment Procedure

6. Troubleshooting Flow Chart

7. Recommended Spare Parts List

8. Exploded Diagram and Exploded Parts List

9. Block Diagrams

10. Schematic Diagrams

11.PCB Layout Diagrams

B. Are you satisfied with this Service Manual?

Good Fair Bad

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
([e-mail])

ViewSonic Corporation Confidential - Do Not Copy VX2025wm-1

59