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VS11201
Service manual
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Service Manual
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ViewSonic Q9b-2, VS11201 Service manual

Service Manual
ViewSonic Q9b-2
Model No. VS11201
19” Color TFT LCD Display
(Q9b-2_SM Rev. 1b Aug. 2006)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA – (800) 888-8583
Copyright
Copyright © 2006 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 05/02/2006 Initial Release Jamie Chang
1b 08/22/2006
VS-E060267 Add 2nd panel source(HSD190ME-A10/A16) VS-E060268
(updated RSPL, BOM, Spec.)
Jamie Chang
TABLE OF CONTENTS
1. Precautions and Safety Notices 1
2. Specification 5
3. Front Panel Function Control Description 14
4. Circuit Description 20
5. Adjustment Procedure 25
6. Troubleshooting Flow Chart 45
7. Recommended Spare Parts List 53
8. Exploded Diagram and Exploded Parts List 58
9. Block Diagram 61
10. Schematic Diagrams 62
11. PCB Layout Diagrams 69
1. Precautions and Safety Notices
1. Appropriate Operation
(1) Turn off the product before cleaning. (2) Use only a dry soft cloth when cleaning the LCD panel surface. (3) Use a soft cloth soaked with mild detergent to clean the display housing. (4) Use only a high quality, safety approved AC/DC power cord. (5) Disconnect the power plug from the AC outlet if the product will not be used for a long period of time. (6) If smoke, abnormal noise, or strange odor is present, immediately switch the LCD display off. (7) Do not touch the LCD panel surface with sharp or hard objects. (8) Do not place heavy objects on the LCD display, video cable, or power cord. (9) Do not use abrasive cleaners, waxes or solvents for your cleaning. (10) Do not operate the product under the following conditions:
- Extremely hot, cold or humid environment.
- Areas containing excessive dust and dirt.
- Near any appliance generating a strong magnetic field.
- In direct sunlight.
2. Caution
No modification of any circuit should be attempted. Service work should only be performed after you are thoroughly familiar
with all of the following safety checks and servicing guidelines.
3. Safety Check
Care should be taken while servicing this LCD display. Because of the high voltage used in the inverter circuit, the voltage is
exposed in such areas as the associated transformer circuits.
4. LCD Module Handling Precautions
4.1 Handling Precautions
(1) Since front polarizer is easily damaged, pay attention not to scratch it. (2) Be sure to turn off power supply when connecting or disconnecting input connector. (3) Wipe off water drops immediately. Long contact with water may cause discoloration or spots. (4) When the panel surface is soiled, wipe it with absorbent cotton or other soft cloth. (5) Since the panel is made of glass, it may break or crack if dropped or bumped on hard surface. (6) Since CMOS LSI is used in this module, take care of static electricity and ensure human earth when handling. (7) Do not open or modify the Module Assembly. (8) Do not press the reflector sheet at the back of the module in any direction. (9) In the event that a Module must be put back into the packing container slot after it was taken out of the
container, do not press the center of the CCFL Reflector edge. Instead, press at the far ends of the CFL Reflector edge softly. Otherwise the TFT Module may be damaged.
(10) At the insertion or removal of the Signal Interface Connector, be sure not to rotate or tilt the Interface
Connector of the TFT Module.
1
(11) After installation of the TFT Module into an enclosure (LCD monitor housing, for example), do not twist or
bend the TFT Module even momentarily. When designing the enclosure, it should be taken into consideration that no bending/twisting forces may be applied to the TFT Module from outside. Otherwise the TFT Module may be damaged.
(12) The cold cathode fluorescent lamp in the LCD contains a small amount of mercury. Please follow local
ordinances or regulations for disposal.
(13) The LCD module contains a small amount of materials having no flammability grade. The LCD module
should be supplied with power that complies with the requirements of Limited Power Source (IEC60950 or UL1950), or an exemption should be applied for.
(14) The LCD module is designed so that the CCFL in it is supplied by a Limited Current Circuit (IEC60950
or UL1950). Do not connect the CCFL to a Hazardous Voltage Circuit.
2
Handing and Placing methods
Correct methods Incorrect methods
Only touch the metal frame of the LCD panel or the front cover of the monitor, DO not touch the surfaceof the POL
Surface of the LCD panel is pressed by fingers and that may cause”mura”
Take out the monitor with cushions Taking out the monitor by grasping the LCD panel, that
May cause”mura”
3
Correct methods Incorrect methods
Place the monitor on a clean and soft foam pad Placing the monitor on a foreign objects, that could
scratch The surface of the "Panel" or cause "mura"
The panel is placed facedown the lap,that may cause "mura"
4
2. Specification
2-1 GENERAL specification
Test Resolution & Frequency 1280x1024 @ 75Hz Test Image Size Full Size
Contrast and Brightness Controls
Factory Default: Contrast = 90%, Brightness = 100%
2-2 VIDEO INTERFACE
Input Connector (refer the appendix A) DB-15 (Analog) Default Input Connector Defaults to the first detected input
Equal to twice the weight of the monitor for five
Video Cable Strain Relief
minutes
Video Cable Connector DB-15 Pin out Compliant 2B
Video RGB (Analog)
Video Signals
Separate Sync
TMDS (Digital) 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 TTL DDC2B Compliant with Revision 1.0 Sync Compatibility Separate Sync
Shall be compatible with all PC type computers, Video Compatibility
Macintosh computers, and after market video
cards
640x350, 720x400, 640x480, 800x600, 832x624, Resolution Compatibility
1024x768, 1152x864,
1152x870, 1280x960, 1280x1024 Exclusions Not compatible with interlaced video
2-3 USB INTERFACE
N/A
5
2-4 POWER SUPPLY
Internal Power Supply FSP FSP035-1PI01ZT 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 5.0 A typical at 12.0 VDC Leakage Current 3.5mA (Max) at 254VAC / 60Hz Efficiency 80 % typical at 115VAC Full Load Fuse Internal and not user replaceable Power Dissipation 36W(typ) 40W(max) Max Input AC Current 1.5 Arms @ 90VAC, 0.75 Arms @180VAC
Inrush Current (Cold Start)
Power Supply Cold Start
Power Supply Transient Immunity
Power Supply Line Surge Immunity
Power Supply Missing Cycle Immunity
50 A (max) @ 115VAC
90 A (max) @ 230VAC
Shall start and function properly when under full
load, with all combinations of input voltage, input
frequency, and operating temperature.
Shall be able to withstand an ANSI/IEEE
C62.41-1980 6000V 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 Power Supply Acoustics
shall defined to be in compliance with ISO 7779
(DIN EN27779:1991) Noise measurements of
machines acoustics. Power Switch noise shall not
be considered. Power Saving Operation(Method) VESA DPMS Signaling
On Mode < 36W(Typ) / 40W (max) Power Consumption
Active Off < 1 W @ 120 Vac /
< 1.5W @ 220Vac Recovery Time On Mode = N/A, Active Off < 3 sec
6
2-5 ELECTRICAL REQUIREMENT
The vertical image size might not full
Horizontal / Vertical Frequency
Horizontal Frequency 30 – 80 kHz Vertical Refresh Rate 55 – 75 Hz. Maximum Pixel Clock 135 MHz Sync Polarity Independent of sync polarity.
Timing Table
Analog
Composite
Separated
Item
1 640 x 350 @ 70 Hz, 31.5 KHz 
2 640 x 480 @ 60 Hz, 31.5 KHz  3 640 x 480 @ 67 Hz, 35 KHz  4 640 x 480 @ 72 Hz, 37.9 KHz  5 640 x 480 @ 75 Hz, 37.5 KHz  6 720 x 400 @ 70 Hz, 31.5 KHz  7 800 x 600 @ 56 Hz, 35.1 KHz  8 800 x 600 @ 60 Hz, 37.9 KHz  9 800 x 600 @ 72 Hz, 48.1 KHz 
Timing
SOG
Digital - TMDS
Remark
screen (Vertical position = center).
10 11 832 x 624 @ 75 Hz, 49.7 KHz  12 13 14 15 16 17 18 1280 x 1024 @ 60 Hz, 64 KHz  19 1280 x 1024 @ 75 Hz, 80 KHz 
800 x 600 @ 75 Hz, 46.9 KHz 
1024 x 768 @ 60 Hz, 48.4 KHz  1024 x 768 @ 70 Hz, 56.5 KHz  1024 x 768 @ 75 Hz, 60.2 KHz 
1152 x 864 @ 75 Hz, 67.5 KHz  1152 x 870 @ 75 Hz, 68.7 KHz 
1280 x 960 @ 60 Hz, 59.7 KHz 
Primary Presets
1280x1024 @ 75Hz
User Presets
Number of User Presets (recognized timings) Available: 10 presets total in FIFO configuration
Changing Modes
● Maximum Mode Change Blank Time for image stability : 3 seconds (Max), excluding “Auto Adjust” time
● The monitor needs to do “Auto Adjust” the first time a new mode is detected
(see section “0-Touch™ Function Actions”)
● While running Change Mode, Auto Adjust or Memory Recall, the image shall blank
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2-6 FRONT PANEL CONTROLS AND INDICATORS Front Panel Hardware Controls
Power Switch (Front Head) Power Control, soft Power Switch. Power LED (Front Head) Green – ON
Orange – Active Off
Dark = Soft Power Switch OFF Front Panel Controls (Head; From left to right)
Button Icon Function Button1 Button2 Button3 Button4 Button5
Select(backward) Select(forward) Power Adjust Down
-
Adjust Up
+
Reaction Time OSD must fully appear within 0.5s after pushing Button 1
Short Cuts Function from the button(s)
Button 1 Auto Image Adjust. Button 2 Main Menu Button 4 Mute on/off Button 5 Volume OSD Button 4 + Button 5 + Button 3
Factory Mode (The Burning mode is build in Factory mode)
Remark : All the short cuts function are only available while OSD off
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Function descriptions
Main Menu Controls
The Main Menu OSD include most of control functions. Please refer to APPENDIX B (Main Menu OSD Table) for the detail.
Factory Default OSD Actions
Memory Recall action on the analog and digital mode as below
1. Set the factory defaults as shown in Section 2-8
2. Clean all the mode setting buffer
3. Execute Auto Image Adjust
0-Touch™ Function Actions
1. Execute Auto Image Adjust when new mode detected, and save the settings to buffer for further use
2. It should be reset by Memory Recall function (Should not reset by power off, power unplug and others) OSD Auto Save The OSD shall save new settings when it is turned off by the user or when it times out. There shall not be a separate save
Factory Defaults
Item Defaults Contrast 90 Brightness 100 Color Setting NATIVE
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2-7 AUDIO INTERFACE (SPEAKER SPECIFICATION)
Speaker specification
Line input connection 3.5 mm stereo jack Line input signal 0.7 Vrms Line input impedance 18 kOhm Maximum power output (Electric) 1 W@ < 15 % distortion Signal to Noise Ratio 50 dB Frequency response 200 Hz – 10 Khz Distortion < 5 % THD (@1kHz)
There should be no audible vibration with
Vibration
volume at 100% and treble / bass at default. There should be no affect on the screen
Screen image
image stability under any conditions. Connector PC99 requirement Audio in Lime Green pantone # 577C Cable type / length 3.5mm stereo cable / 1.8m length
Speakers should be off when the rest of Audio DPMS
the monitor is in power saving.
Under following conditions, there should
be no sympathetic heard Sympathetic
1. input <=0.7Vrms
2. Volume OSD <=80
Distance =30cm ±5cm
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2-8 Panel Characteristics :
st
and 2nd Source Panel
1
st
Model number 1
Source Panel: Hannstar HSD190ME13-A16
nd
Source Panel: Hannstar HSD190ME13 -A10
2
Type Active Matrix TFT, TN technology Active Size 19” Pixel Arrangement RGB Vertical Stripe Pixel Pitch 0.294 mm Glass Treatment Anti-Glare # of Backlights 4 CCFL Backlight Life 40000 Hrs (Min)
50000 Hrs (Typ) 300 cd/m2 (Typ after 30 minute warm up) Luminance (Center) –
CCT = User Color (R/G/B=100%), Contrast/ Brightness = Max
240 cd/m2 (Min after 30 minute warm up)
Brightness Uniformity 75 % (Typ) / 70 % (Min) Contrast Ratio 700 :1 (Typ) 450 : 1 (Min) Color Depth 16.2 million colors (6+2 bit panel)
Typical:
H = 150 degrees
Viewing Angle H, V, D (CR >10)
V = 135 degrees
Minimum:
H = 130 degrees V = 115 degrees
Typical:
Viewing Angle H, V, D (CR >5)
H = 160 degrees V = 155 degrees
Response Time 10%-90% @ Ta=25°C
On/Off
Typical = 8 ms
Maximun = 12 ms
Mercury
3.0 mg per lamp
Panel Defects Please see Panel Quality Specificat ions.
*Over 50% units per shipment shall meet the Typical value above.
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2-9 IMAGE PERFORMANCE Display Size
Horizontal Display Size, Primary Preset Full Screen Vertical Display Size, Primary Preset Full Screen
Luminance
Lv (Max) –Condition: Brightness / Contrast = 100% Color Temperature = User (R/G/B=100) Lv (NATIVE) –Condition: Brightness = Default / Contrast = Default Color Temperature = NATIVE Lv (COOL) –Condition: Brightness = Default / Contrast = Default Color Temperature = COOL Lv (WARM) –Condition: Brightness = Default / Contrast = Default Color Temperature = WARM
Contrast Ratio
CR(Max) –Condition: Contrast / Brightness = 100% Color Temperature = User (R/G/B=100)
Lv (Max) = The Luminance requirement of section 2-6 “TFT LCD PANEL”
Lv (NATIVE) / Lv (Max) x 100% > 85%
Lv (COOL) / Lv (Max) x 100% > 70%
Lv (WARM) / Lv (Max) x 100% > 70%
Same as the Contrast Ratio in section 2-6 “TFT LCD PANEL”
Saturation
Contrast = Default Brightness = Default
No visible saturation
Test pattern = 128-gray
Preset Color Temperatures
Color Temperature = WARM (CCT around 5500K) Color Temperature = NATIVE (CCT around 6500K) Color Temperature = COOL (CCT around 9300K)
x = 0.332 ± 0.03 y = 0.348 ± 0.03 x = 0.313 ± 0.03 y = 0.329 ± 0.03 x = 0.283 ± 0.03 y = 0.298 ± 0.03
Video Cards Compatibility
Peaking Performance : Peaking is not adjustable
Raster Artifacts
● Video Artifacts : No visible streaking, sag, or smearing artifacts when driven by the specified video cards in the primary mode and after user adjustment to best condition
● Power Supply, and Grounding Artifacts : No visible artifacts in any specified video mode within the horizontal or vertical frequency range of the monitor
● Temperature Drift : Image shall not drift or lose fine-tune adjustment
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2-10 MECHANICAL
“Delta E” in the 1976 CIE L*a*b colorspace.
Desktop
Dimension 418 mm (W) x 408 mm (H) x 184 mm (D)
16.5" (W) x 16.1" (H) x 7.2" (D)
Monitor Weight 4.9 Kg (10.8 lbs)
Head Only / Wall Mount
Dimension 418 mm (W) x 363 mm (H) x 57 mm (D)
16.5" (W) x 14.3" (H) x 2.2" (D)
Monitor Weight 4.6 Kg (10.1 lbs)
Ergonomics
Tilt Up Tilt Down
+15º ±2 º
-5 º ±2 º
Cabinet Material
Display Head Plastic Material ABS-94HB Neck/Base Plastic Material ABS-94HB
All internal plastic cabinet components shall be
Internal Plastic Cabinet Components
in compliance with the requirements of MPR II
Front Bezel Color
Neck, Base, Speaker Cover, Rear Cover and Rear Logo Color
Cabinet Color Drift Due To UV-Light
The reference for the Front Bezel is the Black color chip provided by ViewSonic The color difference between any two cabinet components shall be less than 0.80 “Delta E”, in the 1976 CIE L*a*b Colorspace. The reference for the Neck, Base, Speaker Cover, Rear Cover and Rear Logo is the Black color chip provided by ViewSonic
The color difference between any two cabinet components shall be less than 0.80 “Delta E”, in the 1976 CIE L*a*b Colorspace. The color drift due to UV-Light shall be less than
3.0 Testing shall be performed according to the requirements of ASTM Test Method D4459-93.
Cabinet Texture
Samples
Mold-Tech # 11010 used on all external textured surfaces. The supplier shall submit textured color chips, plastic material specifications, and Material Safety Data Sheets for approval.
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3. Front Panel Function Control Description
3.1 Functional Description of Controls a. User Control Panel
b. Description of Key Functions
. Symbol
• ‚
ƒ „
1. Auto-adjust
1. Show the main OSD menu
2. Select the next OSD icon up
2. Select the next OSD icon down Power indicator
Turn the power on or off
Function
…
†
3.2 LED Indicator
The Model has one power LED which has two colors, Green and Amber. LED should have enough luminance for clear viewable. Some monitor status area indicated by using this LED, as follows:
Power LED
Normal On Green Suspend Amber Active Off Off
1. Show the mute OSD.
2. Decrease a function’s (
3. Move to the next function (
1. Show the volume OSD menu
2. Increase a function’s (
3. Move to the next function (
)
)
value.
value.
) left
) right
Out of Range Amber No Input Signal Amber (OSD ON)
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3.3 User Adjustment (At Analog Signal input)
Hot Key
OSD
Brightness Up
Brightness Down
RGB Mode
Auto Adjuster
Brightness
Contrast
H position
V position
Phase
Clock
Color
Slider Bar
User Native Cool
Color Red Color Green Color Blue
Language
3.4 Specification (at all Present Timing) a. BRT / CONT:
Picture background shall become brighter with BRIGHTNESS at its MAX position, and shall become
darker at its MIN position.
Contrast of picture shall be changed by adjusting contrast value.
b. Adjusted Range for H/V Center : ±10mm or more / ±5mm or more
c. Adjusted Range for H Phase / Pitch : ＞60 steps / ±50 dots
d. Color : Standard Shipping Condition－ Native
Preset Color Mode － Cool, Native, Warm. User Adjustment Mode － Users can adjust each R or G or B color individually.
Native: x=0.313±0.015;y=0.329±0.015 Cool :x=0.283±0.015;y=0.297±0.015 Warm : x=0.346±0.015;y=0.359±0.015
15
e. Recall : Recall include Brightness, Contrast, Volume, OSD Position, OSD Time, and execute
D G
A C
Auto Adjust.
f. Language: Users can choose one of the eight languages：English, French, German, Spanish and
Italian, Russian, Tradition Chinese, Simplify Chinese.
g. Power: Pushing Power button shall cause the monitor to be turned ON and LED to be
illuminated.
Pushing Power button again shall cause the monitor to be turned OFF and LED to be OFF.
3.5 Other User/Service Information
a. SIGNAL OVER RANGE:
If the horizontal or vertical or both input signal frequency exceed the acceptable input frequency range, the monitor keeps indicating the “SIGNAL OVER RANGE” as the OSD information after 2 seconds. If both input signal frequencies are in the acceptable frequency range, the monitor puts out the OSD indication and goes back to normal state.
b. RGB NO INPUTSIGNAL:
In case of the pin 14 is +5V, the monitor recognizes PC is connected. Otherwise, the pin 14 is low (approx. 0V), horizontal or vertical input signals are not exist, the monitor displays OSD information〝RGB NO INPUTSIGNAL〞5 seconds, then goes to power save.
3.6 Picture Size & Tilt (Primary mode only; to be checked in shipping condition.)
a. Picture Size: ＜All Models＞ Follow Panel Spec.
b. Tilt:
| AB- CD| = Tilt on top ≦ 1mm | EF - GH| = Tilt on bottom ≦ 1mm | BB’-EE’| ≦ 1mm (at left side)
B’
B
E
D’
bezel video
G’
E’
| DD’-GG’| ≦ 1mm (at right side)
F H
16
3.7 Brightness Uniformity and Contrast Ratio
C D
a. Brightness Uniformity: 128 640 1152
B
E
A
102 512 922
Bmax = MAX (BA, BB, BC, BD, BE) Bmax - Bmin Bmin = MIN (BA, BB, BC, BD, BE)
≦ 20%
Bmax Bave = AVE (BA, BB, BC, BD, BE)
b. Contrast Ratio:
The contrast ratio is measured at point A and calculated by using the following formula Luminance with all pixels in white
Contrast ratio (CR) ＝ ≧ 200 （According to HANNSTAR
Luminance with all pixels in black HSD190ME13-A02)
3.8 Shipping Luminance
a. Condition Input signal : Full white pattern Controls : Color temperature of Office
Cont./Brt. : Default value
Measurement point : One point at the center of the picture.
Warm-up time : 30 minutes. Color analyzer : CA-210
c. Shipping luminance (center)
Shipping Luminance
Color Temperature
19”
Native
≧ 200 cd / ㎡
3.9 Maximum / Minimum Luminance
a. Condition Input signal : Full white pattern (Primary mode) Measurement point : Center of LCD screen Color Analyzer : CA-210 Maximum : BRT→Max. CONT→Max.
17
b. Specification: Native only
(1) ≧200 cd/㎡
3.10 Black Level
a. Gray Scale Condition Input signal: 32 Gray scale (Primary mode) Controls : CONT./BRT. primary setting, other shipping setting
condition.
b. Specification：Native (1) The first bar from black of gray scale pattern shall be cut off.
(2) The last bar from the bright of gray scale pattern shall be discrimination.
3.11 Picture Quality
a. Condition BRT : MIN. ~ MAX.
CONT : MIN. ~ MAX.
*Inspection of picture quality shall be made at the distance of 50 cm in front of LCD surface.
b. Full White Signal
Condition : Input signal – Full white signal
Specification: The following electrical defects shall not be so conspicuous. (ITU-R 4.5 or better in primary mode, and ITU-R 4.0 or better in other modes)
(2) ringing, seam, etc. (3) flicker, noise, beat, etc. (4) shading, etc. (5) saturation of video power supply, etc.
c. Inverted Crosshatch Signal
Condition : Input signal – Inverted crosshatch signal
Specification: Following electrical defects shall not be so conspicuous. (ITU-R 4.5 or better in primary mode, and ITU-R 4.0 or better in other modes)
(1) video ringing, over shoot, smear, etc. (2) vertical jitter, horizontal jitter, picture vibration, etc.
d. Gray Scale Signal
Condition : Input signal – Gray scale signal
Specification: Following electrical defects shall not be so conspicuous. (ITU-R 4.5 or better in primary mode, and ITU-R 4.0 or better in other modes)
(1) Oscillation, noise, beat, shading, etc.
18
3.12 EDID DATA
a. Condition : Maintain Mode b. Specification : FOR RGB
DDC EDID 128 BYTES DATA STRUCTURE
No. Item EDID Data or Definition 00 Header 00 FF FF FF FF FF FF 00 08 ID Manufacturer Name 10 8C (DDL) 0A ID Product Code 00 00 (0) 0C ID Serial Number 00 00 00 00 (0) 10 Week Of Manufacture Week of manufacture 11 Year Of Manufacture Year of manufacture 12 EDID Version,Revision 01 03 14 Video Input Definition 7E(Analog signal,0.700,0.000(0.7
Vp-p),Black-to-Black, ,Separate Syncs, Composite Syncs, Sync
on Screen ) 15 Max. H. Image Size 25 (37cm) 16 Max. V. Image Size 1E(30cm) 17 Display Transfe
Charac.(gamma) 18 Feature Support(DPMS) EB(Stand-by,Suspend,Active Off supported,R/G/B color display) 19 Color Characteristics Per TFT measurement(See NOTE1)
23
26 Standard Timing Identification 81 80— 1280*1024@60Hz; 71 4F— 1152*864@75Hz z;
36 Detailed Timing 1 Description BC 34 00 98 51 00 2A 40 10 90 13 00 78 2D 11 00 00 1E 48 Detailed Timing 2 Description 00 00 00 FF 00 20 44 44 4C 30 30 30 30 30 20 20 20 20 5A Detailed Timing 3 Description 00 00 00 FD 00 37 4B 1E 50 0E 00 0A 20 20 20 20 20 20 6C Detailed Timing 4 Description 00 00 00 FC 00 4C 4D 31 39 30 34 0A 20 20 20 20 20 20 7E Extension Flag 00
7F Checksum Per DDC Specification
Established Timings AF--(720*480@70Hz) ,(640*480@60Hz),(640*480@72Hz),
78(2.20)
(640*480@75Hz),(800*600@56Hz),(800*600@60Hz) EF--(800*600@72Hz),(800*600@75Hz),(832*624@75Hz) (1024*768@60Hz),(1024*768@70Hz),(1024*768@75Hz) (1280*1024@75Hz) 00—
81 40--1280*960@75Hz; 31 46— 640x480 @66Hz 01 01-- 01 01-­01 01-- 01 01--
(1280*1024@75Hz,Video Size:376mm*301mm,No Stereo) Monitor S/N: DDL00000 (Vf:55~75Hz,Hf:30~80KHz,Pixel Clock:140MHz) (LM1904)
NOTE 1 Panel Specification (HSD190ME13)
Color characteristics R: x=0.6475 y=0.3271
G: x=0.2920 y=0.6143 B: x=0.1416 y=0.0791 W: x=0.3096 y=0.3301
Store in EDID data=
FD 56 A5 53 4A 9D 24 14 4F 54
19
4. Circuit Description
A. A/D converters
The ADC is a 7-bit 4-channel analog-to digital converter ,the structure of these ADCS is 7-bit successive approximation ,analog voltage is supplied from external sources to the A/D input pins and the result of the conversion is stored In the 7-bit data latch registers(ADC0_REG~ADC3_REG).The A/D cannels are activated by cleaning the correspondent control bits in the ADC_CON control register, when users write”1” into one of the enable control bits(EN_ADC0~EN-ADC3),its correspondent I/O pin will be switched to the A/D Converter input pin
The conversion will be started by setting STRT_ADC Bit, user can monitor this bit to get the valid A/D channel, its latched data is meaningful, the analog voltage to be measured should be stable during the conversion operation and the variation will not exceed 1 LSB for the best accuracy in measurement
B.Scalling controller
1. VGA front end
l Built-in triple high speed ADC,PLL for analog RGB input l Supports both non-interlaced and interlaced RGB graphic input signals l Input signal ranges from 0.55-0.9v l Provides RGB analog gain and offset control l Support 64 steps (one cycle of pixel)of phase adjust l ADC sampling rates are up to 110MHZ for x type, 160MHZ for E type Supports analog SOG
input
2. YUV Front End
l Support ITU-R BT.656 8-bit input l Built-in YUV to RGB color space converter
3. Display
l Supports data swap to fit any panel data alignment for PCB Layout l Built in LVDS transmitter l Supports spectrum of output clock
4. Hot interface
l Support serial 2-wire IIC bus l Provides 2 channel PMW
5. Power
l Power supply l Less than 1.3W
20
6. Video processor
l Flexible de-interlacing unit for VGA and digital YUV video input data l Auto-calibration function for quick vide cantering, clock adjust and phase adjust l Independent horizontal and vertical zoom in/out algorithm l Enhanced interpolation algorithm for optimal image quality l Provides RGB digital gain and offset control l Dithering function supports 24-bits quality for 18-bit panel l SRGB matrix mapping support l 10-bit programmable gamma table for panel compensation l Supports Hue and saturation adjustment l Built-in POST pattern
Timing controller
l Support RSDS output l Provides 4 differential data pairs to support 6 or 8-bit RGB data bus l 10 General Purpose output allow suitability to different production environments l Provide single pixel (18-24-bit) or dual pixel (36-48-bit) l Programmable RSDS swing level l Supports line offset function for two bank system panel l 12 GPO internal controls 10 GPO external pin outputs l Supports data swap to fit any panel data alignment for PCD layout
Sync Processor
l Supports separate, composite and TTL-level sync-on-Green (SOG) sync input l Polarity detection for HSYNCI and VSYNCI l Fast mode change detection function
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