Viewsonic VX715-1, VX715 Service Manual 1b

Service Manual

ViewSonic VX715-1

Model No. VS10057

17” Color TFT LCD Display

ViewSonic

(VX715_SM_829 Rev. 1b Aug. 2004)



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

Copyright

Copyright

2004 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.

1a

1b

Revision History

Documents Number

DCN Number ECR Number

28/04/04

04/08/04

286

4

4646

Description of Changes EditorRevision SM Editing Date

Initial Release

ECR Change to 2nd Source Panel (Hydis Panel + MST Scalar) A. Lu

A. Lu

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TABLE OF CONTENTS

1. Precautions and Safety Notices

2. Specification

3. Front Panel Function Control Description

4. Circuit Description

5. Adjusting Procedure

6. Trouble Shooting Flow Chart

7. Recommended Spare Parts List

8. Exploded Diagram And Spare Parts List

9. Block Diagram

10. Schematic Diagrams

11. PCB Layout Diagrams

1

2

11
18

21
30

31
42
44
45

52

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1. Precautions and Safety Notices

1. SAFETY PRECAUTIONS

This monitor is manufactured and tested on a ground principle that a user’s safety comes first. However, improper
use or installation may cause damage to the monitor as well as the user. Carefully go over the following
WARNINGS before installing and keep this guide handy.

WARNINGS

.

This monitor should be operated only at the correct power sources indicated on the label on the rear end of the

.

.

.

.
.

.

monitor. If you’re unsure of the power supply in your residence, consult you local dealer or power company.

Do not try to repair the monitor your self as it contains no user-serviceable parts. This monitor should only be
repaired by a qualified technician.

Do not remove the monitor cabinet. There are high-voltage parts inside that may cause electric shock to human

bodies, even when the power cord is unplugged.
Stop using the monitor if the cabinet is damaged. Have it checked by a service technician.

Put your monitor only in a clean, dry environment. If it gets wet, unplug the power cable immediately and
consult your service technician.
Always unplug the monitor before cleaning it .Clean the cabinet with a clean, dry cloth. Apply non-ammonia
based cleaner onto the cloth, not directly onto the glass screen.
Keep the monitor away from magnetic objects, motors, TV sets, and transformer.
Do not place heavy objects on the monitor or power cord.

2. PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in this chassis have special safety visual inspections and the protection
afforded by them cannot necessarily be obtained by using replacement components rated for higher voltages,
wattage, etc. Before replacing any of these components read the parts list in this manual carefully. The use of
substitute replacement parts which do not have the same safety characteristics as specified in the parts list may

create shock, fire ,or other hazards.

3. SERVICE NOTES

1. When replacing parts or circuit boards, clamp the lead wires around terminals before soldering.

2. When replacing a high wattage resistor(more than 1W of metal oxide film resistor) in circuit board, keep

the resistor about 5mm away from circuit board.

3. Keep wires away from high voltage, high temperature components and sharp edges.

4. Keep wires in their original position so as to reduce interference.

5. Please refer to the user's manual for operating instructions.

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2. Specification

2.1 PRODUCT SPECIFICATIONS

LCD Panel 17.0” TFT
Power Management Energy Star compliant VESA

DPMS compatible
<1 W

Recommend Resolution 1280 x1024@60Hz
Pixel Dimension 0.264(H) x 0.264(V)mm

LCD Display Color 16.2M Colors (6+2FRC bit)
Viewing Angle Horizontal: 150 deg

Vertical: 130 deg

Contrast Ratio 450：1 (Typ.)

Brightness 300 cd/㎡(Typ.)
Response Time Tr Tf = 16ms

Active Display Area 337.920(H) x 270.336(V)

+

Temperature Operating: 0°C to +40°C
Storage: -20°C to +60°C

Power Input Voltage : 90V~264V

Consumption: 35 Watts(Max.) 32 Watts(Typ.)

2.2 FACTORY SUPPORTING MODES

Primary Preset: VESA : 1280 x1024@60Hz

Timing Table : 1.640 x 350 @ 70Hz, 31.5kHz

2.640 x 400 @ 60Hz, 31.5kHz

3.640 x 400 @ 70Hz, 31.5kHz

4.640 x 480 @ 50Hz, 24.7kHz

5.640 x 480 @ 60Hz, 31.5kHz

6.640 x 480 @ 67Hz, 35.0kHz

7.640 x 480 @ 72Hz, 37.9kHz

8.640 x 480 @ 75Hz, 37.5kHz

9.640 x 480 @ 85Hz, 43.27kHz

10.720 x 400 @ 70Hz, 31.5kHz

11.800 x 600 @ 56Hz, 35.1kHz

12.800 x 600 @ 60Hz, 37.9kHz

13.800 x 600 @ 75Hz, 46.9kHz

15.800 x 600 @ 85Hz, 53.7kHz

16.832 x 624 @ 75Hz, 49.7kHz

17.1024 x 768 @ 60Hz, 48.4kHz

18.1024 x 768 @ 70Hz, 56.5kHz

19.1024 x 768 @ 72Hz, 58.1kHz

20.1024 x 768 @ 75Hz, 60.0kHz

21.1024 x 768 @ 85Hz, 68.67kHz

22.1152 x 864 @ 75Hz, 67.5kHz

23.1152 x 870 @ 75Hz, 68.7kHz

24.1280 x 1024 @ 60Hz, 63.4kHz

25.1280 x 1024 @ 75Hz, 79.97kHz

26.1280x 720 @ 60Hz, 45kHz (HDTV)

14.800 x 600 @ 72Hz, 48.1kHz

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2.3 D-SUB CONNECTOR

D-SUB 15 PIN CONNECTOR

15
6

11 15

10

Pin Number Pin Function

1 Red video input
2 Green video input
3 Blue video input
4 No Connection
5 Ground
6 Red video ground
7 Green video ground
8 Blue video ground
9 +5V

SIGNAL LEVEL

10 H/V sync ground
11 No connection
12 (SDA)
13 Horizontal sync (Composite sync)
14 Vertical sync
15 (SCL)

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DVI 15 PIN CONNECTOR

Pin No. Signal Name Description

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

9 RX1- TMDS negative differential input, channel 1
10 RX1+ TMDS positive differential input, channel 1
11 GND Logic Ground
12 Reserved 12 Reserved. No connection
13 Reserved 13 Reserved. No connection
14 VCCX Power
15 GND Logic Ground
16 SENS SENSE Pin, Pull High
17 RX0- TMDS negative differential input, channel 0
18 RX0+ TMDS positive differential input, channel 0
19 GND Logic Ground
20 Reserved 20 Reserved. No connection
21 Reserved 21 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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2-4 Appendix E: Analog EDID

Time: 08:16:29

Date: Mon Apr 26, 2004
______________________________________________________________________

______________________________________________________________________
VIEWSONIC CORPORATION

EDID Version # 1, Revision # 3

DDCTest For: ViewSonic VX715

______________________________________________________________________
______________________________________________________________________

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 | 19 43 01 01 01 01 01 0E 01 03
20 | 0E 22 1B 78 2A 3D 85 A3 58 46
30 | 9D 24 17 50 54 BF EF 80 81 80
40 | 71 4F 61 59 45 59 31 59 01 01
50 | 01 01 01 01 30 2A 00 98 51 00
60 | 2A 40 30 70 13 00 52 0E 11 00
70 | 00 1E 00 00 00 FF 00 50 32 31
80 | 30 34 30 31 30 30 30 30 31 0A
90 | 00 00 00 FD 00 32 55 1E 52 0E

100 | 00 0A 20 20 20 20 20 20 00 00
110 | 00 FC 00 56 58 37 31 35 0A 20

120 | 20 20 20 20 20 20 00 35

______________________________________________________________________

(08-09) ID Manufacturer Name = VSC
(11-10) Product ID Code = 4319
(12-15) Last 5 Digits of Serial Number = Not Used

(16) Week of Manufacture = 01
(17) Year of Manufacture = 2004
(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

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(21) Maximum Horizontal Image Size = 340 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, Preferred Timing Mode

Display Type = R/G/B Color

(25-34) CHROMA INFO:

Red X - 0.637 Green X - 0.276 Blue X - 0.143 White X - 0.313
Red Y - 0.347 Green Y - 0.614 Blue Y - 0.090 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:

1280 X 1024 @60Hz
1152 X 864 @75Hz
1024 X 768 @85Hz

800 X 600 @85Hz
640 X 480 @85Hz

Not Used

Not Used

Not Used
______________________________________________________________________
(54-71) Detailed Timing / Descriptor Block 1:

1280x1024 Pixel Clock: 108.00 MHz

______________________________________________________________________

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Horizontal Image Size: 338 mm Vertical Image Size: 270 mm
Refreshed Mode: Non-Interlaced Normal Display - No Stereo

Horizontal:

Active Time: 1280 pixels Blanking Time: 408 pixels
Sync Offset: 48 pixels Sync Pulse Width: 112 pixels
Border: 0 pixels Frequency: 63.98 KHz

Vertical:
Active Time: 1024 lines Blanking Time: 42 lines
Sync Offset: 1 lines Sync Pulse Width: 3 lines
Border: 0 lines Frequency: 60.02 Hz

Digital Separate, Horizontal Polarity (+) Vertical Polarity (+)

______________________________________________________________________

(72-89) Detailed Timing / Descriptor Block 2:

Monitor Serial Number:
P21040100001

______________________________________________________________________

(90- 107) Detailed Timing / Descriptor Block 3:

Monitor Range Limits:
Min Vertical Freq - 50 Hz
Max Vertical Freq - 85 Hz
Min Horiz. Freq - 30 KHz
Max Horiz. Freq - 82 KHz
Pixel Clock - 140 MHz
Secondary GTF - Not Supported

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

Monitor Name:
VX715

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

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2-5 Appendix F: Digital EDID

Time: 08:17:38

Date: Mon Apr 26, 2004
______________________________________________________________________
______________________________________________________________________

VIEWSONIC CORPORATION

EDID Version # 1, Revision # 3

DDCTest For: ViewSonic VX715

______________________________________________________________________
______________________________________________________________________
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 | 19 43 01 01 01 01 01 0E 01 03
20 | 80 22 1B 78 2A 3D 85 A3 58 46
30 | 9D 24 17 50 54 BF EF 80 81 80

40 | 71 4F 61 59 45 59 31 59 31 0A
50 | 01 01 01 01 30 2A 00 98 51 00
60 | 2A 40 30 70 13 00 52 0E 11 00

70 | 00 1E 00 00 00 FF 00 50 32 31
80 | 30 34 30 31 30 30 30 30 31 0A
90 | 00 00 00 FD 00 32 55 1E 52 0E

100 | 00 0A 20 20 20 20 20 20 00 00
110 | 00 FC 00 56 58 37 31 35 0A 20
120 | 20 20 20 20 20 20 00 8A

______________________________________________________________________
(08-09) ID Manufacturer Name = VSC
(11-10) Product ID Code = 4319

(12-15) Last 5 Digits of Serial Number = Not Used
(16) Week of Manufacture = 01
(17) Year of Manufacture = 2004

(10-17) Complete Serial Number = See Descriptor Block
(18) EDID Version Number = 1
(19) EDID Revision Number = 3

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(20) VIDEO INPUT DEFINITION:

Digital Signal
Non - VESA DFP 1.x Compatible

(21) Maximum Horizontal Image Size = 340 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, Preferred Timing Mode
Display Type = R/G/B Color

(25-34) CHROMA INFO:

Red X - 0.637 Green X - 0.276 Blue X - 0.143 White X - 0.313
Red Y - 0.347 Green Y - 0.614 Blue Y - 0.090 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 Ti

ming Identification:

1280 X 1024 @60Hz
1152 X 864 @75Hz
1024 X 768 @85Hz
800 X 600 @85Hz
640 X 480 @85Hz
640 X 400 @70Hz
Not Used
Not Used

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______________________________________________________________________
(54-71)

Detailed Timing / Descriptor Block 1:

1280x1024 Pixel Clock: 108.00 MHz

______________________________________________________________________

Horizontal Image Size: 338 mm Vertical Image Size: 270 mm
Refreshed Mode: Non-Interlaced Normal Display - No Stereo

Horizontal:
Active Time: 1280 pixels Blanking Time: 408 pixels
Sync Offset: 48 pixels Sync Pulse Width: 112 pixels

Border: 0 p

ixels Frequency: 63.98 KHz

Vertical:
Active Time: 1024 lines Blanking Time: 42 lines

Sync Offset: 1 lines Sync Pulse Width: 3 lines
Border: 0 lines Frequency: 60.02 Hz

Digital Separate, Horizontal Polarity (+) Vertical Polarity (+)

______________________________________________________________________
(72-89)

Detailed Timing / Descriptor Block 2:

Monitor Serial Number:
P21040100001

______________________________________________________________________
(90-107) Detailed Timing / Descriptor Block 3:

Monitor Range Limits:
Min Vertical Freq - 50 Hz

Max Vertical Freq - 85 Hz
Min Horiz. Freq - 30 KHz
Max Horiz. Freq - 82 KHz
Pixel Clock - 140 MHz
Secondary GTF - Not Supported

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

Monitor Name:

VX715

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

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3. Front Panel Function Control Description

Adjusting the Screen Image

Use the buttons on the front control panel to display and adjust the OnView®
controls which display on the screen. The OnView controls are explained at the

top of the next page.

Main Menu
With OnView controls

Front Control Panel
shown below in detail

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

Scrolls through menu options and
adjusts the displayed control.

Also a shortcut to display the
Contrast adjustment control
screen.

Displays the control
screen for the highlighted
control.

Also toggles between two
controls on some
screens.

Also a shortcut to toggle
between analog and
digital connections.

Power light
Green = ON
Orange = Power

Saving

1

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Power
On/Off

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Do the following to adjust the screen image:

To display the Main Menu, press button [1].

1

NOTE:

All OnView menus and adjustment screens disappear automatically

after about 30 seconds.

To select a control you want to adjust, press ▲ or ▼ to scroll up or down the

2

Main Menu.
After the control is selected, press button [2]. A control screen like the one

3

shown below appears.

Contrast

1: Exit 2 : Brightness

To adjust the control, press the up ▲ or down ▼ buttons.

4

To save the adjustments and exit the menu, press button [1]

5

The line at the
bottom of the
screen tells you
what you can do
next: Exit or select
the Brightness
control.

.

twice

The following tips may help you optimize your display:

• Adjust your computer's graphic card so that it outputs a video signal 1280 x
1024 @ 60 Hz to the LCD display. (Look for instructions on “changing the
refresh rate” in your graphic card's user guide.)

• If necessary, make small adjustments using H POSITION and V POSITION
until the screen image is completely visible

. (The black border around the
edge of the screen should barely touch the illuminated “active area” of the
LCD display.)

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Main Menu Controls

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

Control Explanation

automatically sizes, centers, and fine tunes

Auto Image Adjust

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

NOTE:

1. 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

2. The Auto Image Adjust and most Manual Image Adjust

pre-set value.

functions are not available for DVI input.

Contrast

adjusts the difference between the image background

(black level) and the foreground (white level).

Brightness

Input Select

adjusts background black level of the screen image.

allows you to toggle between an analog and a

digital signal.

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Control Explanation

Color Adjust

color temperatures and

provides several color adjustment modes: preset

RGB

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

Color Adjust

SRGB

9300K
6500K

5400K

User Color

sRGB

— sRGB is quickly becoming the industry standard for color
management, with support being included in many of the latest
applications. Enabling this setting allows the LCD display to
more accurately display colors the way they were originally
intended. Enabling the sRGB setting will cause the Contrast and
Brightness adjustments to be disabled.

9300K

— Adds blue to the screen image for cooler white (used

in most office settings with fluorescent lighting).

6500K

— Adds red to the screen image for warmer white and

richer red.

5400K

User Color

and blue (B)

1
2

Important

— Adds green to the screen image for a darker color.

— Individual adjustments for red (R), green (G),

.

To select color (R, G or B) press button [2].
To adjust selected color, press ▲ or ▼.

: If you select RECALL from the Main Menu when
the product is set to a Preset Timing Mode, colors return to the
6500K factory preset.

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Control Explanation

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).

NOTE:

VESA 1280 x 1024 @ 60 Hz (recommended) means
that the resolution is 1280 x 1024 and the refresh rate is 60
Hertz.

Information

H. Frequency: 31.47 KHz
V. Frequency: 31.47 Hz
Pixel Clock: 24.80 MHz

Resolution: 640 x 480
Model No. :
Serial No. :

1: Exit

Manual Image Adjust

www.viewsonic.com

displays the Manual Image Adjust menu.

Manual Image Adjust

H . / V . Position
H . Size
Fine Tune
Sharpness

1: Exit 2 : Select

The

Manual Image Adjust

Horizontal Position

Vertical Position

Horizontal Size

sharpens focus by aligning the illuminated text and/

Fine Tune

moves the screen image left or right.

moves the screen image up or down.

adjusts the width of the screen image.

or graphic characters.

adjusts the clarity and focus of the screen image.

Sharpness

controls are explained below:

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