Viewsonic vx900-2 Service Manual 1a
Service Manual
ViewSonic VX900-2
Model No.VLCDS26105-2W
19” Color TFT LCD Display
ViewSonic
(VX900-2_SM_637 - Rev.1a-Feb 2003)
381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583
Copyright
Copyright¤ 2003 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
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 Date Description Of Changes Approval
1a 02/14/03 Initial Reversion DCN-2963 C.Shen
!
ViewSonic Corporation
j!
Confidential – Do Not Copy VX900-2
PRECAUTIONS AND NOTICES
Prior to using this manual, please ensure that you have carefully followed all the procedures
outlined in the user manual for this product.
Read all of these instructions.
z
Save these instructions for later use.
z
Follow all warnings and instructions marked on the product.
z
Do not use this product near water.
z
This display should be installed on a solid horizontal base.
z
When cleaning, use only a neutral detergent cleaner with a soft damp cloth. Do not spray
z
with liquid or aerosol cleaners.
Do not expose this display to direct sunlight or heat. Hot air may cause damage to the cabinet
z
and other parts.
Adequate ventilation must be maintained to ensure reliable and continued operation and to
z
protect the display from overheating. Do not block ventilation slots and openings with objects or
install the display in a place where ventilation may be hindered.
Do not install this display near a motor or transformer where strong magnetism is generated.
z
Images on the display will become distorted and the color irregular.
Do not allow metal pieces or objects of any kind fall into the display from ventilation holes.
z
Slots and openings in the cabinet and the back or bottom are provided for ventilation, to ensure reliable
operation of the product and to protect it from overheating, those openings must not be blocked or
covered. The openings should never be blocked by placing the product on a bed, sofa, rug, or other
similar surface. This product should never be placed near or over a radiator or heat register. This
product should not be placed in a built-in installation unless proper ventilation is provided.
ViewSonic Corporation
jj!
Confidential – Do Not Copy VX900-2
Content
1. Engineering Specifications . ...........................................................................................1
1.1 Scope ........................................................................................................................1
1.2 Electrical Characteristics ...........................................................................................4
1.3 Mechanical Characteristics .....................................................................................14
1.4 Packaging ...............................................................................................................15
1.5 Environmental Characteristics.................................................................................15
1.6 Factory setting.........................................................................................................15
Appendix I Preset Signal Timings..............................................................................16
Analog timing mode table.......................................................................................17
Digital timing mode table........................................................................................19
Appendix II EDID Code...............................................................................................21
Analog....................................................................................................................21
Digital .....................................................................................................................21
Appendix III Label Printing ..........................................................................................22
ID LABEL ...............................................................................................................22
Bar Code label/Serial No Label ..............................................................................22
2. Front Panel Function Control Description...................................................................23
2.1 User control functions..............................................................................................23
2.2 OSD operation flow .................................................................................................24
3. Circuit Description .........................................................................................................33
3.1 Interface Board........................................................................................................33
3.2 Audio Board ............................................................................................................37
4. Troubleshooting Flow Chart .........................................................................................40
4.1 Figure of Waveform.................................................................................................39
4.2 No Display on Screen (Screen is black, LED is off).................................................42
4.3 No Display on Screen ( LED is green).....................................................................43
4.4 No Power On...........................................................................................................44
4.5 No Sound (Test signal: 1r.m.s sine waveform ) .......................................................45
4.6 Show “No Signal” on screen....................................................................................46
4.7 Keypad can not work...............................................................................................46
5. Adjust Procedure ...........................................................................................................47
1. Preparation Of Manual Alignment .............................................................................48
2. Color Temperature Alignment....................................................................................50
3. Factory Preset Setting...............................................................................................51
6. Mechanical Assembly....................................................................................................53
ViewSonic Corporation
jjj!
Confidential – Do Not Copy VX900-2
7. Explode Diagram and Mechanical Parts List ...............................................................58
8. Schematic Daigrams.......................................................................................................59
9. PCB LAYOUT..................................................................................................................66
10. Recomended Spare Parts List......................................................................................69
11. Complete Parts List.......................................................................................................71
Appendix
Reader's Response
ViewSonic Corporation
jw!
Confidential – Do Not Copy VX900-2
I. Engineering Specifications.
1. Scope
The following specifications are applicable to model VX900-2 19 inch color LCD monitor.
General Description (VX900-2)
LCD
Input Signals RGB
Fujitsu 19.0” SXGA TFT- MVA (premium)
Size
Effective Display Size
Pixel Pitch
Resolution
Brightness
Contrast Ratio
Color
Viewing Angle
Surface treatment
Digital
19.0 inches diagonal
376.32 mm X 301.056 mm (typical)
0.294 mm X 0.294 mm
1280 x 1024 dot (SXGA)
250 cd / m² (typ.), 200 min.
600:1(typ.), 400 (min.)
16,777,216
Up 85° Down 85°(min.)
Left 85° Right 85°(min.)
CR>10:1
Anti-Glare
Analog 0.7 Vp-p / 75Ө
Separate sync.
Composite sync
Sync-On-Green
TMDS.
Positive Polarity
TTL level
Input connector Analog mini D-sub 15 pin x 1
Speaker Max 3W x 2
Main IC GM5120
Display Colors 16,777,216
Preset Timings SXGA/60Hz, 75Hz,
!
ViewSonic Corporation
Digital DVI-D x 1
Audio min-Din 2 channel x 2
Micro-phone jack
XGA/60Hz, 70Hz, 75Hz, 85Hz
SVGA/56Hz, 60Hz, 72Hz, 75Hz, 85Hz
VGA/60Hz, 72Hz, 75Hz, 85Hz
Dos-text/70Hz
2
Confidential – Do Not Copy VX900-2
Synchronization Horizontal
30 kHz to 83 kHz
(automatically)
Vertical
50 Hz to 75 Hz
Non-interlaced
Max Pixel Rated 135Mhz
Resolution Horizontal
Vertical
Active Display
Area
Horizontal
Vertical
1280 dots
1024 lines
376.32 mm (typical)
301.056 mm (typical)
(Active display area is dependent upon signal timings)
Power Supply
AC adapter input AC90V-264V 50 / 60 Hz
Rating
AC Power
Consumption
60W (Max.)
less than 3W
Current Rating AC input
DC input
Dimensions Net
Gross
(automatically)
On mode
Off mode( w/o audio cable connected )
0.7A
4.0A
@AC 100-240V
@DC 12.0V
442.0 (W) x 474.6 (H) x 180.6 (D) mm
565.0 (W) x 525.0 (H) x 260.0 (D) mm
Weight Net
Gross
Environmental
Conditions
Operating Temperature
Operating Humidity
Storage Temperature
Storage Humidity
Accessories AC power cord-UL
AC power cord-Schuko
Analog VGA cable
DVI-D cable
Audio cable
Microphone cable
ViewSonic CD-Wizard
7.5Kg
10.2Kg
0 to 50°C (PANEL SURFACE)
20 to 85% ( no condensation, < wetbulb
29 degree C)
-20 to 60°C
5 to 85% ( no condensation, < wetbulb
29 degree C )
1.8m
1.8m
1.8m
1.8m
1
1
1
!
ViewSonic Corporation
3
Confidential – Do Not Copy VX900-2
Regulatory
UL, CSA or cUL, CB Report, CE, FCC-B, DOC-B, TUV/Ergo
Standards
(which covers ISO13406-2 and MPRIII), TUV/GS, PCT (GOST-R)
with 20 Hygienic certificates, PCBC (B Mark), SEMKO, DEMKO,
FIMKO, NEMKO, BSMI, VCCI, CCIB/EMC, CCEE, PSB
(Singapore Safety), TCO’99, NOM and Argentina IRAM (thru TUV).
OSD Language English, French, German, Spanish, Finnish, Italian, Japanese,
Traditional Chinese, Simplified Chinese
Others Tilt Angle 20° up / 5° down
Power Saving System
User Control by tact switch keypad with On Screen Display-
VESA DDC1/2B compatible ( digital port DDC2B only)
!
!
ViewSonic Corporation
4
Confidential – Do Not Copy VX900-2
2. Electrical Characteristics
2.1 Power Supply
2.1.1 AC Input
Input Voltage AC90-264V
Frequency 47 / 63Hz
Power Consumption:
60 W (max) on mode
Less than 3W power save mode ( audio cable not connected )
Current Rating 0.7A @ AC100-240V
2.2 LCD
LCD Fujitsu (TFT-MVA)
Effective display size 376.32 (H) x 301.06 (V) mm (typ.)
19.0” / 48 cm diagonal
Pixel number 1280 x 1024 pixels
Color filter arrangement R.G.B. vertical stripe
Display method TFT, normally black
Drive method Active matrix (TFT) – MVA
Dot pitch 0.098 (H) x 0.294 (V) mm
Pixel pitch 0.294 (H) x 0.294 (V) mm
Dot number 1280 x 1024 x 3 dots
Backlight Edge-lighting type with 4 CCFLs
(Cold Cathode Fluorescent Tube)
Brightness 200 cd / m2(min: center / all white)
Contrast ratio 400:1 (min)
Display color 16,777,216
Typical viewing angle Up 85° / down 85° / right 85° / left 85° (min.)
(Contrast ratio>10 at Ta=25°C, 77°F)
Response time 25 msec (Typical at 25 degree C)
2.3 Interface Signals
2.3.1 RGB Video Signals
2.3.1.1 Separate Sync . Signals
Analog R,G,B 0 - 0.7 Vp-p
Signal Level 75Ө± 5%
Sync Level TTL level
Sync Polarity independent
2.3.1.2 Sync On green, Composite Sync
!
!
ViewSonic Corporation
5
Confidential – Do Not Copy VX900-2
2.3.2 TMDS digital Signals
2.3.2.1 Video type
DVI 1.0 compliant
2.3.3 Audio spec.
2.3.3.1 Line input connection
3.5 mm stereo jack x 1
2.3.3.2 Line input signal & impedance
1.0Vrms, 10 kOhm
2.3.3.3
OUTPUT SIGNAL AT SPEAKER TERMINAL
3W @ < 5% DISTORTION
2.3.3.4 Frequency Response
400 Hz – 20 KHz
2.3.3.5 Connector PC99 requirement Audio in
Lime Green pantone # 577C
2.3.3.6 Cable length
1.8 m
2.3.3.7 Audio DPMS
Speakers stay on when the rest of the monitor is in power saving.
2.3.3.8 Speakers
Impedance 4 Ohm
Output Wattage 3.0W (max.) x 2
2.3.4 Input Signal Connectors
2.3.4.1 Analog RGB Video Input : 15 pin mini D-sub
PIN NO. Separate Sync
1 RED
2 GREEN
3 BLUE
4 GROUND
5 GROUND
6 GROUND
7 GROUND
8 GROUND
!
!
ViewSonic Corporation
6
Confidential – Do Not Copy VX900-2
5 1
9 +5V
10 GROUND
11 N.C
12 SDA
13 H.SYNC
14 V.SYNC
15 SCL
10
15
6
11
2.3.4.2 Digital TMDS DVI-D Connector
24 pin DVI-D connector pin assignment
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
!
!
ViewSonic Corporation
7
Confidential – Do Not Copy VX900-2
20 Reserved 20 Reserved. No connection
C
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
2.3.4.3 Audio Connector
2.5 mm Stereo jack x 1,
3.5mm Microphone jack x 1
2.3.5 Signal Timing
2.3.5.1 User Timing Mode memory
always do auto image adjust after timing mode change
2.3.5.2 Timing mode Change
maximum time for mode Change with auto image adjust 7 sec.
2.3.5.3 Signal Timing Table
The factory test input video signal is defined as the following table:
Preset H.sync V.sync SYN
No. Frequency Frequency H- V-
MOD [1]
MOD [2]
MOD [3]
MOD [4]
MOD [5]
MOD [6]
MOD [7]
MOD [8]
MOD [9]
MOD [10]
MOD [11]
MOD [12]
31.468 1 .0KHz 70.0 1.0Hz
31.468 1 .0KHz 70.0 1.0Hz
31.468 1 .0KHz 59.94 1.0Hz
35.01 1 .0KHz 66.67 1.0Hz
37.86 1 .0KHz 72.81 1.0Hz
37.5 1 .0KHz 75.0 1.0Hz
43.27 1 .0KHz 85.0 1.0Hz
35.16 1 .0KHz 56.25 1.0Hz
37.88 1 .0KHz 60.32 1.0Hz
48.077 1 .0KHz 72.19 1.0Hz
46.875 1 .0KHz 75.0 1.0Hz
53.67 1 .0KHz 85.0 1.0Hz
+ - 640X350(70) Text mode
+ + 800X600(56) VESA STANDARD
+ + 800X600(60) VESA STANDARD
+ + 800X600(72) VESA STANDARD
+ + 800X600(75) VESA STANDARD
+ + 800X600(85) VESA STANDARD
POL. Video Mode Description
- + 720X400(70) Dos text
- - 640X480(60) VESA STANDARD
- - 640X480(66) MAC
- - 640X480(72) VESA STANDARD
- - 640X480(75) VESA STANDARD
- - 640X480(85) VESA STANDARD
MOD [13]
MOD [14]
MOD [15]
MOD [16]
MOD [17]
!
!
ViewSonic Corporation
49.72 1 .0KHz 74.5 1.0Hz
48.363 1 .0KHz 60.0 1.0Hz
58.01 1 .0KHz 72.08 1.0Hz
60.023 1 .0KHz 75.0 1.0Hz
68.67 1 .0KHz 85.0 1.0Hz
- - 832X624(75) MAC
- - 1024X768(60) VESA STANDARD
- - 1024X768(72) VESA STANDARD
+ + 1024X768(75) VESA STANDARD
+ + 1024X768(85) VESA STANDARD
8
Confidential – Do Not Copy VX900-2
MOD [20]
63.981 1 .0KHz 60.02 1.0Hz
+ + 1280X1024(60) VESA STANDARD
MOD [21]
79.976 1 .0KHz 75.0 1.0Hz
+ + 1280X1024(75) VESA STANDARD
2.4 Luminance Control
Analog signal (6500K)
over 200 cd / m2 (@ Cont / Bright max)
Digital signal (6500K)
over 200 cd / m2 (@ Cont / Bright max)
2.5. Synchronization
Horizontal: 30 to 83 kHz
Vertical: 50 to 75 Hz Non-interlaced
maximum 75Hz @ 1280 x 1024 mode
Recommended 60Hz @ 1280 x 1024 mode
2.6 Display Characteristics
2.6.1 Picture Size
Horizontal Width 376.32 mm (typical)
Vertical Width 301.06 mm (typical)
2.6.2 Optical Characteristics
General qualities: The following data was measured by BM7 of TOPCON
data are panel optical data, for analog signal there are +- 5% tolerance.
Item Code Conditions Min. Typ. Max. Unit
Contrast CR
White㧛Black at Image
400 600
Center
White
Brightness
Uniformity of
Brightness
Response
At 25 degree
Right
L
FULL White 200 250
VMAX
Bmin
Bmax
Tpd
All White ψ All Black
All Black ψ All White
Ә
R
CenterCR㧪10
75
15
10
85
㧙㧙
㧙㧙
cd / m
2
㧙
%
㧙
㧙
㧙
ms
ms
Degree
Viewing Left
Angle Up
Down
!
!
ViewSonic Corporation
Ә
ӥ
ӥ
L
H
L
85 㧙Degree
85 㧙Degree
85 㧙Degree
9
Confidential – Do Not Copy VX900-2
Luminance
g
control
All White(digital signal
or analog 6500k)
>=200 (cont / bright
cd / m
2
Brightness at center of
backlight max)
display surface
These characteristics were measured under the following conditions:
Temperature: 77 ± 6°F, 25 ± 5°C
Viewing angle: AU = 0°, AR = 0°
Warm Up time: minimum 30 minutes
Measuring instrument: TOPCOM BM-7 Luminance Meter
Measuring distance: 500 mm
Measuring angle: 2°
500mm
BM-7
2 Degree
Notes:
(Note 1) Contrast ratio is defined as the following formula.
Brightness(Luminance) with all pixels at "white"
Bri
Contrast ratio =
htness with allpixels at " black"
(Note 2) Viewing angle is measured as follows:
!
!
ViewSonic Corporation
:
Confidential – Do Not Copy VX900-2
0QTOCN
Ǿࠑǰࠑ
ǰ .ࠑ
:
QENQEM
;
Ǿ .ࠑ
ǰ.
Ǿ.
’
Ǿ*
ǰ4
QENQEM
Ǿ *ࠑ
;
’
:
ǰ 4ࠑ
(Note 3) Definition of response time is as follows:
Response time is measured when the display data is changed from white to black.
!
!
ViewSonic Corporation
21
Confidential – Do Not Copy VX900-2
White(TFT OFF)
White
Optical
Response
Black(TFT ON) White(TFT OFF)
100
㧑
90
㧑
10
㧑
0
㧑
T
R
(Note 4) Judge points for brightness uniformity
Brightness uniformity is judged at nine (9) points on display area:
128 512 896
98
384
670
(9)
(6)
(3)
(8)
(5)
(2)
(7)
(4)
(1)
Bmin
BUNI
㧩
Bmax
T
F
Bmax : Maximum Brightness
Bmin : Minimum Brightness
!
!
ViewSonic Corporation
22
Confidential – Do Not Copy VX900-2
2.6.3. LCD Panel
Mechanical
Active Area (mm) 376.32 x 301.056
Pixel pitch (mm) 0.294 (0.098x3)
Mass typical (g) 3000
Panel dimensions (WxDxH) mm 414x335x23 mm(typ.)
Resolution
1280 x 1024
Surface Treatment with Haze value Anti-glare, 2H
Panel Model number FLC48SXC8V-01 (19” TFT)
Panel Interfaces Dual LVDS
Optical performance
Contrast ratio 600:1 Typical
400 :1 Minimum
Luminance of white(center) 250 nits Typical
200 nits Minimum
White Uniformity 75% (5 points measurement)
Chromaticity values (red, green, blue) center
Color temperature
‘x = +/- 0.030
‘y = +/- 0.030
‘x = 0.323 +/- 0.030
‘y = 0.337 +/- 0.030
EBU 85% Min
Colors True 8 bits (16.7M)
Viewing Angle H, V (CR >10) 170 (Min)
Film
Response time ms
Not used wide viewing film
Typical Tr = 15ms ; Tf = 10ms
Maximum Tr = 30ms; Tf = 25ms
Number of Back Light(CCFL) 4 – Edge type back light
Backlight (hrs) 50,000 hours minimum; 60,000 hours typical
!
!
ViewSonic Corporation
23
Confidential – Do Not Copy VX900-2
2.7 Power Management
Unit will enter power saving mode under the following conditions:
Power Management condition and status
State Signals Power Video LCD LED
Horizontal Vertical Video Supply Circuit
On Pulses Pulses Active On On On Green
Stand-by No Pulses Pulses Blanking Off Off Amber
Suspend Pulses No
Pulses
Off No Pulses No
Pulses
Complete N/A N/A N/A Off Off
2.8 FullScan Capability
When the input display mode is not 1280x1024, the image area is changed as follows:
Flex Scan Input display Expanded Rate Expanded
Mode Mode Resolution Horizontal Vertical Resolution
Expansion 1 640x350 2 2.93 1280x1024
Expansion 2 640x400 2 2.56 1280x1024
Expansion 3 640x480 2 2.13 1280x1024
Expansion 4 720x400 1.78 2.56 1280x1024
Expansion 5 800x600 1.6 1.71 1280x1024
Expansion 6 832x624 1.54 1.64 1280x1024
Expansion 7 1024x768 1.25 1.33 1280x1024
Expansion 8 1152x864 1.11 1.19 1280x1024
Standard 1280x1024 1 1 1280x1024
!
!
ViewSonic Corporation
24
Confidential – Do Not Copy VX900-2
3.
Mechanical Characteristics
3.1 Dimensions
Net: 442.0 (W) x 474.6 (H) x 180.6 (D) mm
Gross: 565.0 (W) x 525.0 (H) x 260.0 (D) mm
3.2 Weight
Net:
7.5Kg
Gross: 10.2 Kg
3.3 Base Rotation
Tilt: up 20 ° / down 5 °
3.4 Labeling
3.4.1 ID Label ( Paste on Rear Cover )
Material: Polyester’s
Color: Black (same as plastic color) / White (Letter)
Size: 50 (W) X 25 (H) mm
Location: Rear Back Label
Contents: Appendix III
3.4.2 Bar Code Number Label (Carton Box)
Material: Art Paper
Color: White (Base) / Black (Letter)
Size: 76 (W) X 76 (H) mm
Location: Carton Box (Side Wall)
Contents: Appendix III
3.4.3 Serial Number Label (Rear Back Label)
Material: Art Paper
Color: White (Base) / Black (Letter)
Size: 25 (W) X 50 (H) mm
Location: Paste on Rear Back Label
Contents: Appendix III
3.5 Serial Number Format
Serial No. PPP
YY WW XXXXX
Serial No. (5-digit)
Manufacturing week
Last digit of manufacturing year
Regional Product ID Code :
VX900-2:A24
!
ViewSonic Corporation
25
Confidential – Do Not Copy VX900-2
3.6 UPC Coding (Code 39 format)
Worldwide Model UPC Code: 766907 80262 7
4. Packaging
4.1 Carton Box
Dimensions: 565(W) x 525(H) x 260(D) mm
Color: 4-Color printing box
Material: BC-FLUTE or Equivalent, double wall
5. Environmental Characteristics
5.1 Operating Conditions
Temperature: 0 Through + 40° C
Humidity: 20% To 85% ( 39 degree welt bulb )
Altitude: 0 – 3,000 Meter
5.2 Non-operating Conditions
Temperature: -20 Through +60 ° C
Humidity: 5% To 85% ( 39 degree welt bulb )
Altitude: 0 – 12,000 meter
6. Factory setting
6.1 OSD
Brightness 100% (based on 0-100%)
Contrast 80% (based on 0-100%)
AutoTune Executed
Color Temperature 6500k
Volume 50%
Balance 50%
Bass/Treble 50%
OSD Timeout 15 Sec
Language English
OSD position Center
6.2 Power Switch
OFF
!
!
ViewSonic Corporation
26
Confidential – Do Not Copy VX900-2
Appendix I Preset Signal Timings
H-Video
Horizontal
V-Video
Vertical
H active
H front H back
H pulse
H total
V active
V front
V pulse
V total
V back
!
ViewSonic Corporation
27
Confidential – Do Not Copy VX900-2
Analog timing mode table
1 2 3 4 5 6 7
Signal name symbol TEXT mode TEXT mode VGA MAC-II VESA-VGA VESA-VGAVESA-VG
A
H-frequency (kHz) 31.468 31.469 31.468 35.001 37.5 37.862 43.269
V-frequency (Hz) 70.087 70.087 59.941 66.667 75 72.807 85.005
Pixel rate (MHz) 25.175 28.322 25.175 30.240 31.5 31.501 36.000
H-sync Ths 96 108 96 64 64 40 56
H-back porch Thb 48 54 48 96 120 128 80
Count num (H-total) Thd 800 900 800 864 840 832 832
H- front porch Thf 16 18 16 64 16 24 56
V-sync Tvs 2 2 2 3 3 3 3
V-back porch Tvb 60 35 33 39 16 28 25
Count num (V-total) Tvd 449 449 525 525 500 520 509
V-front porch Tvf 37 12 10 3 1 9 1
H-sync. Polarity Positive Negative Negative Negative Negative Negative Negative
V-sync Polarity Negative Positive Negative Negative Negative Negative Negative
H-resolution (dots) 640 720 640 640 640 640 640
V-resolution (lines) 350 400 480 480 480 480 480
8 9 10 11 12 13 14
Signal name Symbol IBM-8514A SVGA SVGA SVGA SVGA MAC 16" XGA
H-frequency (kHz) 35.156 37.879 48.077 46.875 53.674 49.725 48.363
V-frequency (Hz) 56.250 60.317 72.188 75.000 85.061 74.5 60.004
Pixel rate (MHz) 36.000 40.000 50.000 49.500 56.250 57.283 65.000
H-sync Ths 72 128 120 80 64 64 136
H-back porch Thb 128 88 64 160 152 224 160
Count num (H-total) Thd 1024 1056 1040 1056 1048 1152 1344
H- front porch Thf 24 40 56 16 32 32 24
V-sync Tvs 2 4 6 3 3 3 6
V-back porch Tvb 22 23 23 21 27 39 29
Count num (V-total) Tvd 625 628 666 625 631 667 806
V-front porch Tvf 1 1 37 1 1 1 3
!
ViewSonic Corporation
28
Confidential – Do Not Copy VX900-2
H-sync. Polarity Negative Positive Positive Positive Positive Negative Negative
V-sync Polarity Negative Positive Positive Positive Positive Negative Negative
H-resolution (dots) 800 800 800 800 800 832 1024
V-resolution (lines) 600 600 600 600 600 624 768
15 16 17 18 19 20 21
Signal name Symbol XGA XGA XGA XGA SXGA 720P SXGA
H-frequency (kHz) 56.476 58.099 60.023 68.677 63.981 45.000 79.976
V-frequency (Hz) 70.069 72.082 75.029 84.997 60.02 60.00 75.025
Pixel rate (MHz) 75.000 78.084 78.750 94.500 108 74.250 135
H-sync Ths 136 136 96 96 112 40 144
H-back porch Thb 144 160 176 208 248 270 248
Count num (H-total) Thd 1328 1344 1312 1376 1688 1658 1688
H- front porch Thf 24 24 16 48 48 60 16
V-sync Tvs 6 6 3 3 3 5 3
V-back porch Tvb 29 29 28 36 38 20 38
Count num (V-total) Tvd 806 806 800 808 1066 750 1066
V-front porch Tvf 3 3 1 1 1 5 1
H-sync. Polarity Negative Negative Positive Positive Positive Negative Positive
V-sync Polarity Negative Negative Positive Positive Positive Negative Positive
H-resolution (dots) 1024 1024 1024 1024 1280 1280 1280
V-resolution (lines) 768 768 768 768 1024 720 1024
!
!
ViewSonic Corporation
29
Confidential – Do Not Copy VX900-2
Digital timing mode table
1 2 3 4 5 6 7
Signal name symbol TEXT mode TEXT mode VGA VGA VESA-VGAVESA-VGAVESA-VG
A
H-frequency (kHz) 31.468 31.469 31.468 31.468 37.5 37.862 43.269
V-frequency (Hz) 70.087 70.087 70.000 59.941 75 72.807 85.005
Pixel rate (MHz) 25.175 28.322 25.175 25.175 31.5 31.501 36.000
H-sync Ths 96 108
H-back porch Thb 48 54
Count num (H-total) Thd 800 900
H- front porch Thf 16 18
V-sync Tvs 2 2
V-back porch Tvb 60 35
Count num (V-total) Tvd 449 449
V-front porch Tvf 37 12
H-sync. Polarity Positive Negative Negative Negative Negative Negative Negative
V-sync Polarity Negative Positive Negative Negative Negative Negative Negative
H-resolution (dots) 640 720 640 640 640 640 640
V-resolution (lines) 350 400 400 480 480 480 480
8 9 10 11 12 13 14
96
48
800
16
2
35
449
10
96 64 40 56
48 120 128 80
800 840 832 832
16 16 24 56
2 3 3 3
33 16 28 25
525 500 520 509
6 1 9 1
Signal name Symbol IBM-8514A SVGA SVGA SVGA SVGA XGA XGA
H-frequency (kHz) 35.156 37.879 48.077 46.875 53.674 48.363 56.476
V-frequency (Hz) 56.250 60.317 72.188 75.000 85.061 60.004 70.069
Pixel rate (MHz) 36.000 40.000 50.000 49.500 56.250 65.000 75.000
H-sync Ths 72 128 120 80 64 136 136
H-back porch Thb 128 88 64 160 152 160 144
Count num (H-total) Thd 1024 1056 1040 1056 1048 1344 1328
H- front porch Thf 24 40 56 16 32 24 24
V-sync Tvs 2 4 6 3 3 6 6
V-back porch Tvb 22 23 23 21 27 29 29
Count num (V-total) Tvd 625 628 666 625 631 806 806
V-front porch Tvf 1 1 37 1 1 3 3
!
!
ViewSonic Corporation
!
2:
Confidential – Do Not Copy VX900-2
H-sync. Polarity Negative Positive Positive Positive Positive Negative Negative
V-sync Polarity Negative Positive Positive Positive Positive Negative Negative
H-resolution (dots) 800 800 800 800 800 1024 1024
V-resolution (lines) 600 600 600 600 600 768 768
15 16 17 18 19
Signal name Symbol XGA XGA XGA SXGA HD-720P
H-frequency (kHz) 58.099 60.023 68.677 63.981 45.000
V-frequency (Hz) 72.082 75.029 84.997 60.02 60.00
Pixel rate (MHz) 78.084 78.750 94.500 108 74.250
H-sync Ths 136 96 96 112 40
H-back porch Thb 160 176 208 248 270
Count num (H-total) Thd 1344 1312 1376 1688 1658
H- front porch Thf 24 16 48 48 60
V-sync Tvs 6 3 3 3 5
V-back porch Tvb 29 28 36 38 20
Count num (V-total) Tvd 806 800 808 1066 750
V-front porch Tvf 3 1 1 1 5
H-sync. Polarity Negative Positive Positive Positive Negative
V-sync Polarity Negative Positive Positive Positive Negative
H-resolution (dots) 1024 1024 1024 1280 1280
V-resolution (lines) 768 768 768 1024 720
!
!
ViewSonic Corporation
31
Confidential – Do Not Copy VX900-2
Appendix II EDID Code
Analog
239!CZUFT!PG!FEJE!DPEF;!
!!!!!! !! ! 1!!!2!!!3!!!4!!! 5!!!6!!!7!!!8!!!9!!! :!
!!!!!! ```````````````````````````````````````!
!!1! !}!!11! !GG!!GG!! GG!!GG!! GG!!GG!! 11! !6B!!74!
!21!!}!!22! ! :1! ! 12! !12! !12! !12!!12!!1D!!12!! 14!
!31!!}!!1F! ! 37! ! 2F! !89! !3B! !3D!!:6!!B7!!69!! 5B!
!41!!}!!:B! ! 37! ! 32! !61! !65! !CG!!FG!!11!!92!! 91!
!51!!}!!12! ! 12! ! 12! !12! !12! !12!!12!!12!!12!! 12!
!61!!}!!12! ! 12! ! 12! !12! !41! !3B!!11!!:9!!62!! 11!
!71!!}!!3B! ! 51! ! 41! !81! !24! !11!!89!!3E!!22!! 11!
!81!!}!!11! ! 2F! ! 11! !11! !11! !GG!!11!!52!!43!! 45!
!91!!}!!41! ! 43! ! 41! !42! !41! !41!!41!!41!!42!! 1B!
!:1!!}!!11! !11! !11! !GE!!11!!43!!5C!! 2F! !64! ! 1F!
211! ! }!!11! !1B! !31!!31!! 31!! 31! !31!!31!!11!!11!
221! ! }!!11! !GD! !11!!67!! 69!! 4:! !41!!41!!3E!!43!
231!! }!!1B! !31! !31! !31!!31!! 31!! 11! !BE!
Digital
239!CZUFT!PG!FEJE!DPEF;!
!!!!!!!!!1!!!2!!!3!!!4!!!5!!!6!!!7!!!8!!!9!!!:!
!!!!!!````````````````````````````````````````!
!!1!!}!!11!!GG!!GG!!GG!!GG!!GG!!GG!!11!!6B!!74!
!21!!}!!22!!:1!!12!!12!!12!!12!!12!!1D!!12!!14!
!31!!}!!91!!37!!2F!!89!!3B!!3D!!:6!!B7!!69!!5B!
!41!!}!!:B!!37!!32!!61!!65!!CG!!FG!!11!!92!!91!
!51!!}!!42!!1B!!12!!12!!12!!12!!12!!12!!12!!12!
!61!!}!!12!!12!!12!!12!!41!!3B!!11!!:9!!62!!11!
!71!!}!!3B!!51!!41!!81!!24!!11!!89!!3E!!22!!11!
!81!!}!!11!!2F!!11!!11!!11!!GG!!11!!52!!43!!45!
!91!!}!!41!!43!!41!!42!!41!!41!!41!!41!!42!!1B!
!:1!!}!!11!!11!!11!!GE!!11!!43!!5C!!2F!!64!!1F!
211!!}!!11!!1B!!31!!31!!31!!31!!31!!31!!11!!11!
221!!}!!11!!GD!!11!!67!!69!!4:!!41!!41!!3E!!43!
231!!}!!1B!!31!!31!!31!!31!!31!!11!!13!
!
ViewSonic Corporation
32
Confidential – Do Not Copy VX900-2
Loading...