ViewSonic VA550 - LCD Display - TFT Support and Manuals
Get Help and Manuals for this ViewSonic item
View All Support Options Below
Free ViewSonic VA550 manuals!
Problems with ViewSonic VA550?
Ask a Question
Free ViewSonic VA550 manuals!
Problems with ViewSonic VA550?
Ask a Question
Popular ViewSonic VA550 Manual Pages
Service Manual - Page 1
April 2001) ViewSonic® 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583 VLCDS21457-3
15" Color TFT LCD Display
50
VioewnStoon..ic
ViewSonk
rrii
------'
iri, it, im____
1 ----------
4-----Th
(VA550_SM_282 - Rev. 1- [ Service Manual,
ViewSonic VA550
Model No.
Service Manual - Page 2
... Of Changes
Initial Issue - Sears
ii
VA550 Service Manual Copyright
Copyright © 2001 by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without obligation of ViewSonic to notify any person of such revision or changes.
Trademarks ViewSonic is a registered trademark of their respective owners. No part of this publication may be reproduced...
Service Manual - Page 4
..., Inc. Service Manual
VA550
ViewSonic Corporation
IBM and IBM products are registered trademarks of the US Environmental Protection Agency (EPA). Energy Star is encouraged to try to provide reasonable protection against harmful interference in a residential installation. Canada (CSA); Germany (VDE); FCC WARNING To assure continued FCC compliance, the user must use the AC cords as...
Service Manual - Page 5
... allowing a full range of input AC power supply.
3. Frequency Range Monitor can define display mode or reset to reduce power consumption by more than 90% in "Active Off' Mode.
4. DO NOT COPY
Page 3 LCD Adjust; OSD V-Pos; Help menu contains: Auto-Sync; ViewSonic Corporation FEATURES
Service Manual
VA550
The VA550 is able to default settings. Digital On Screen Display Controls...
Service Manual - Page 6
Service Manual
VA550
SPECIFICATIONS
ViewSonic Corporation
Characteristic
LCD Panel Maximum Viewing Angles
Signal Input
Connector Maximum Resolution Video Bandwidth Display Area Power Voltage Power Consumption Operating Conditions
Storage Conditions
Dimensions Weight
Description
ADI, 15.0 inch diagonal viewable screen, Anti-glare TFT Active Matrix Panel, 0.297 mm pixel pitch, TDK ...
Service Manual - Page 7
... Language Recall Main menu
Value
0 - 100 0 - 100 0 - 100 0 - 100
0 - 100 0 - 100 0 - 100 0 - 100 0 - 100 0 - 100 0 - 100
ON/OFF ON/OFF
CONFIDENTIAL - ViewSonic Corporation
ON SCREEN DISPLAY
Service Manual
VA550
OSD (On Screen Display) function is supported on the TFT LCD analog display and is controlled by four easy-to-use buttons;
DO NOT COPY
Page...
Service Manual - Page 15
..., V-Sync and H-Sync pulse width, back porch and front porch, to determine the correct
power saving mode. ViewSonic Corporation
THEORY OF CIRCUIT OPERATION
Service Manual
VA550
The VA550 is to provide the clock from its preset values. The purpose of the two sets of PLL's is a multi-frequency and multi-mode color TFT LCD display. Also, included...
Service Manual - Page 16
Service Manual
VA550
THEORY OF CIRCUIT OPERATION
ViewSonic Corporation
Ng 0
R73 600
R77 .0
606 012
ici5 74.14
5015 741S14
13
1014 241.021/..N.0
NG V NC VOLE VSS SDA
I ."
.5 NC
900
11606) 011 ...
Service Manual - Page 17
...valid high to low transition on the SCL pin will be set to be in the Transmit Only mode, sending a serial ...cause the device to 80 MHz. ViewSonic Corporation
THEORY OF CIRCUIT OPERATION
Service Manual
VA550
This Product supports timing from VGA to XGA, so...the low pixel rate. The 24LC21 is a PWM signal.
Upon power up, this device will choose the proper phase adjustment circuit through...
Service Manual - Page 19
... following major functions; 1.
ViewSonic Corporation
THEORY OF CIRCUIT OPERATION
Service Manual
VA550
AM100 The AM100 is capable of performing automatic detection of the display resolution and timing of the input...determine the input resolution to generate the frequency driver for the best phase to the input mode. signal to automatically detect any user adjustment or driver running on ...
Service Manual - Page 20
... supports 16.7 million true colors for both directions based upon the LCD panel resolution, and the input mode and timing information produced by a table with default setting.... The AM100 implements both horizontal and vertical directions. Service Manual
VA550
THEORY OF CIRCUIT OPERATION
ViewSonic Corporation
Image scaling
The AM100 supports several different input modes, and the input image...
Service Manual - Page 32
...ROG O
019
50V
20
2200P
C18 10P
00150
RO5 750
CODE ENCODE
CLKO
The ICS1523 is programmed by an external bias ... ICS1523 adopts an external feedback method to create the sampling clock supplied to 150MHz) formats.
I ..
1. It offers pixel clock outputs... gen-locked high resolution video applications. Service Manual
VA550
THEORY OF CIRCUIT OPERATION
PLL
ViewSonic Corporation
>PU
00041...
Service Manual - Page 33
... - The comparator of IC20 will be set to low causing +5 V and VLCD to be isolated from other power sources. The + 5 V source provides power to compare with an over 15 Volts,... Q14, and MC14049 are +5Vx and Vlcd. DO NOT COPY
Page 31 ViewSonic Corporation
THEORY OF CIRCUIT OPERATION
Service Manual
VA550
POWER SYSTEM
L32 8410102
012 4700 25V
IC18 1RF7304
C24 470u .12V :\ /
C...
Service Manual - Page 42
...ViewSonic Corporation
heck the A/ convertor (IC08)
is OK?
Check the VLCD, ► GND, H-sync, V-sync,
DCLK and DE-0
J
Check ICO2 Vcc and Hsync-0, Vsync-0, DCLK-out, DE-out
• End
Page 40
CONFIDENTIAL- Service Manual
VA55O
TROUBLE... turned on ?
Power Saving
1
N Check if the power is OK
L
1 Check the video cable Y and check if the Hsync or V-sync is over
specifications I CKL and ...
Service Manual - Page 44
Start
Is picture ">>" or " ETC. Service Manual
VA550
TROUBLE SHOOTING
ViewSonic Corporation
WRONG DISPLAY IMAGE (WRONG COLOR, WHITE, SPLIT IMAGE, PICTURE RUNS...
ViewSonic VA550 Reviews
We have not received any reviews for ViewSonic yet.