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Q7b-3

ViewSonic Q7b-3, VS11147 Service manual

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Service Manual
ViewSonic Q7b-3
Model No. VS11147
17” Color TFT LCD Display
(Q7b-3_SM Rev. 1b Oct. 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
Opt quest 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 05/05/2006 Initial Release Jamie Chang
1b 10/19/2006 VS-E060261 Introduce SVA170SX01TB panel source Jamie Chang
VS-E060262 Introduce Innolux panel source Jamie Chang
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TABLE OF CONTENTS
1. Precautions and Safety Notices 1
2. Specification 5
3. Front Panel Function Control Description 13
4. Circuit Description 19
5. Adjustment Procedure 24
6. Troubleshooting Flow Chart 45
7. Recommended Spare Parts List 53
8. Exploded Diagram and Exploded Parts List 60
9. Block Diagram 62
10. Schematic Diagrams 63
11. PCB Layout Diagrams 70
ii
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”
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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
Equal to twice the weight of the monitor for five
Shall be compatible with all PC type computers,
Macintosh computers, and after market video
2-1 GENERAL specification
Test Resolution & Frequency 1280x1024 @ 75Hz Test Image Size Full Size
Contrast and Brightness Controls
2-2 VIDEO INTERFACE
Input Connector (refer the appendix A) DB-15 (Analog) Default Input Connector Defaults to the first detected input
Factory Default: Contrast = 90%, Brightness = 100%
Video Cable Strain Relief Video Cable Connector DB-15 Pin out
minutes Compliant 2B
Video RGB (Analog)
Video Signals Video Impedance
Maximum PC Video Signal Maximum Mac Video Signal Sync Signals DDC2B Sync Compatibility
Separate Sync
75 Ohms (Analog), 100 Ohms (Digital) 950 mV with no damage to monitor 1250 mV with no damage to monitor TTL Compliant with Revision 1.0 Separate Sync
Video Compatibility
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
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2-4 POWER SUPPLY
Shall be able to withstand 1.5 times nominal line
Shall be able to function properly, without reset or
visible screen artifacts, when ½ cycle of AC power
The power supply shall not produce audible noise
that would be detectable by the user. Audible
shall defined to be in compliance with ISO 7779
(DIN EN27779:1991) Noise measurements of
r Switch noise shall not
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 Power Dissipation Max Input AC Current
Internal and not user replaceable
36W(typ) 40W(max)
1.5 Arms @ 90VAC, 0.75 Arms @180VAC
50 A (max) @ 115VAC Inrush Current (Cold Start)
90 A (max) @ 230VAC
Shall start and function properly when under full
load, with all combinations of input voltage, input Power Supply Cold Start
frequency, and operating temperature.
Shall be able to withstand an ANSI/IEEE Power Supply Transient Immunity
C62.41-1980 6000V 200 ampere ring wave
transient test with no damage.
Power Supply Line Surge Immunity
Power Supply Missing Cycle Immunity
voltage for one cycle with no damage.
is randomly missing at nominal input.
Power Supply Acoustics
machines acoustics. Powe
be considered. Power Saving Operation(Method)
Power Consumption
VESA DPMS Signaling
On Mode < 36W(Typ) / 40W (max)
Active Off < 1 W @ 120 Vac /
< 1.5W @ 220Vac
Recovery Time On Mode = N/A, Active Off < 3 sec
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2-5 ELECTRICAL REQUIREMENT

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
Timing
Analog Item
Composite
Separated
Digital - TMDS
SOG
Remark
640 x 350 @ 70 Hz, 31.5 KHz
1 2
3 4 5 6 7 8
9 10 11 12 13 14 15 16 17 18 19
640 x 480 @ 60 Hz, 31.5 KHz 640 x 480 @ 67 Hz, 35 KHz 640 x 480 @ 72 Hz, 37.9 KHz 640 x 480 @ 75 Hz, 37.5 KHz 720 x 400 @ 70 Hz, 31.5 KHz 800 x 600 @ 56 Hz, 35.1 KHz 800 x 600 @ 60 Hz, 37.9 KHz 800 x 600 @ 72 Hz, 48.1 KHz 800 x 600 @ 75 Hz, 46.9 KHz
832 x 624 @ 75 Hz, 49.7 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
1280 x 1024 @ 60 Hz, 64 KHz 1280 x 1024 @ 75 Hz, 80 KHz
The vertical image size might not full screen (vertical position = center).
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
The OSD shall save new settings when it is turned off by the user or when it times out.
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
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
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
VIBRATION WITH VOLUME AT 100% AND TREBLE / BASS AT DEFAULT. THERE SHOULD BE NO AFFECT ON THE
SCREEN IMAGE
SCREEN IMAGE STABILITY UNDER ANY
CONDITIONS. CONNECTOR PC99 REQUIREMENT AUDIO IN
LIME GREEN PANTONE # 577C CABLE TYPE / LENGTH 3.5MM STEREO CABLE / 1.8M LENGTH
SPEAKERS SHOULD BE OFF WHEN THE AUDIO DPMS
REST OF THE MONITOR IS IN POWER
SAVING.
UNDER FOLLOWING CONDITIONS, THERE
SHOULD BE NO SYMPATHETIC HEARD SYMPATHETIC
1. INPUT <=0.7VRMS
2. VOLUME OSD <=80
3. DISTANCE =30CM ±5CM
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2-8 TFT LCD PANEL
Panel Characteristics:
1st Source Panel
Model number CMO M170E5-L09 (17”) Type Active Matrix TFT, TN technology Pixel Arrangement RGB Vertical Stripe (0.264 mm Pixel Pitch) Glass Treatment Anti-Glare, Hard Coating (3H) # of Backlights 4 CCFL Backlight Life 50,000 Hrs (Typical)/40,000 Hrs (Min) Luminance (Center) 300 cd/m2 (Typical) /230 cd/m2 (Min) Brightness Uniformity 80% (Typical) / 75% (Min) Contrast Ratio 500 :1 (Typical) / 400 : 1 (Min) Color Depth 16.2 million colors (6+2 bit panel) Viewing Angle (CR>10) (H) 150°/ (V)130° Response Time 10%-90% @ Ta=25°C On/Off : 8 ms Mercury 3.0 mg per lamp
* P50% units of monthly shipment shall be equal or better than the Typical value above.
2nd Source Panel
Model number Innolux MT170EN01 (17”) Type Active Matrix TFT, TN technology Pixel Arrangement RGB Vertical Stripe (0.264 mm Pixel Pitch) Glass Treatment Anti-Glare, Hard Coating (3H) # of Backlights 4 CCFL Backlight Life 50,000 Hrs (Min) Luminance (Center) 280 cd/m2 (Typical) / 250 cd/m2 (Min) Brightness Uniformity 80% (Typical) / 75% (Min) Contrast Ratio 600 :1 (Typical) / 500 : 1 (Min) Color Depth 16.2 million colors (6+2 bit panel) Viewing Angle (CR>10) (H)150° degrees (V) 135° Viewing Angle (CR>5) (H)170°(Typical) / (V)155°(Typical) Response Time 10%-90% @ Ta=25°C On/Off : 8 ms Mercury 3.0 mg per lamp
* P50% units of monthly shipment shall be equal or better than the Typical value above.
rd
Source Panel
3
Model number SVA SVA170SX01TB Type Active Matrix TFT, TN technology Pixel Arrangement RGB Vertical Stripe (0.264 mm Pixel Pitch) Glass Treatment Anti-Glare # of Backlights 4 CCFL Backlight Life 50,000 Hrs (Typical) / 42,000 Hrs (Min) Luminance (Center) 300 cd/m2 (Typical) / 240 cd/m2 (Minimum) Brightness Uniformity 83% (Typical) / 77% (Minimum) Contrast Ratio 600 :1 (Typical) / 400 : 1 (Minimum) Color Depth 16.77million colors (6bit panel) Viewing Angle (CR>10) (H)130° / (V) 110° Response Time 10%-90% @ Ta=25°C On/Off : 8 ms Mercury <3.0 mg per lamp
* P50% units of monthly shipment shall be equal or better than the Typical value above.
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2-9 IMAGE PERFORMANCE
Lv (Max) = The Luminance requirement of
6
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)
section 2-6 “TFT LCD PANEL”
Lv (NATIVE) –Condition:
Brightness = Default / Contrast = Default Color Temperature = NATIVE
Lv (NATIVE) / Lv (Max) x 100% > 85%
Lv (COOL) –Condition:
Brightness = Default / Contrast = Default Color Temperature = COOL
Lv (COOL) / Lv (Max) x 100% > 70%
Lv (WARM) –Condition:
Brightness = Default / Contrast = Default Color Temperature = WARM
Lv (WARM) / Lv (Max) x 100% > 70%
Contrast Ratio
CR(Max) –Condition:
Contrast / Brightness = 100% Color Temperature = User (R/G/B=100)
Same as the Contrast Ratio in section 2­“TFT LCD PANEL”
Saturation
Contrast = Default Brightness = Default
NO VISIBLE SATURATION
Test pattern = 128-gray
Preset Color Temperatures
Color Temperature = WARM (CCT around 5500K)
x = 0.332 ± 0.03 y = 0.348 ± 0.03
Color Temperature = NATIVE (CCT around 6500K)
x = 0.313 ± 0.03 y = 0.329 ± 0.03
Color Temperature = COOL (CCT around 9300K)
x = 0.283 ± 0.03 y = 0.298 ± 0.03
*No redish, greenish or bluish tint under any color setting (base on PVT sample)
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
tic cabinet components shall
be in compliance with the requirements of
Neck, Base, Speaker Cover, Rear Cover
Cover, Rear Cover and Rear Logo is the Black
Light shall be less
“Delta E” in the 1976 CIE L*a*b
ormed
according to the requirements of ASTM Test
Tech # 11010 used on all external
The supplier shall submit textured color chips,
plastic material specifications, and Material
Desktop Dimension 375 mm (W) x 372 mm (H) x 160 mm (D)
14.8" (W) x 14.6" (H) x 6.3" (D)
Monitor Weight 4.2 Kg (9.3 lbs)
Head Only / Wall Mount Dimension 375 mm (W) x 323 mm (H) x 56 mm (D)
14.8" (W) x 12.7" (H) x 2.2" (D)
Monitor Weight 3.9 Kg (8.6 lbs)
Ergonomics Tilt Up +15º ±2 º Tilt Down -5 º ±2 º
Cabinet Material Display Head Plastic Material ABS-94HB Neck/Base Plastic Material ABS-94HB
All internal plas
Internal Plastic Cabinet Components
MPR II
Front Bezel Color
and Rear Logo Color
Cabinet Color Drift Due To UV-Light
Cabinet Texture
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 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 UV­than 3.0 colorspace. Testing shall be perf
Method D4459-93. Mold-
textured surfaces.
Samples
Safety Data Sheets for approval.
12
3. Front Panel Function Control Description
3.1 Functional Description of Controls
a. User Control Panel
b. Description of Key Functions
No. Symbol
•
‚
ƒ „
… †
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.
Function
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 ( Power indicator
Turn the power on or off
1. Show the main OSD menu
2. Select the next OSD icon down
1. Auto-adjust
2. Select the next OSD icon up
)
value.
)
value.
) left
) right
Some monitor status area indicated by using this LED, as follows:
Power LED
Normal On Green Suspend Amber Active Off Off 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
RGB Mode
Auto Adjuster Brightness Contrast H position V position Phase Clock Color
Slider Bar
Brightness Up
User Native Cool
Color Red Color Green Color Blue
Language Reset Exit
Brightness Down
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.
14
D G
A C
e. Recall : Recall include Brightness, Contrast, Volume, OSD Position, OSD Time, and execute
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:
B’
D’
bezel
B
| AB- CD| = Tilt on top ≦ 1mm | EF - GH| = Tilt on bottom ≦ 1mm
video
| BB’-EE’| ≦ 1mm (at left side)
E’
E
G’
| DD’-GG’| ≦ 1mm (at right side)
F H
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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) ＝ ≧ 400（According to CMO Luminance with all pixels in black M170E5-L09）
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
17”
Native
≧ 230 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.
b. Specification: Native only
(1) ≧230 cd/㎡
16
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.
17
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 22 (34cm) 16 Max. V. Image Size 1B(27cm) 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 51 0E 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 37 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:337mm*270mm,No Stereo) Monitor S/N: DDL00000 (Vf:55~75Hz,Hf:30~80KHz,Pixel Clock:140MHz) (LM1704)
NOTE 1 Panel Specification (M170E5-L0A)
Color characteristics R: x=0.6445 y=0.3477
G: x=0.2803 y=0.6055 B: x=0.1416 y=0.0713 W: x=0.3135 y=0.3291
Store in EDID data=
0C 55 A5 59 47 9B 24 12 50 54
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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
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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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Pin description
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