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17" LCD Color Monitor AOC 719Va
Service
Service
Service
Horizontal Frequency
31-80 KHz
TABLE OF CONTENTS
Description Page Description Page
Table Of Contents......................................................1 5.2.Electrical Block Diagram...........................19
Revision List........................................................2 6.Schematic.....................................................21
Important Safety Notice.....................................3 6.1.Main Board...................................................21
1.Monitor Specification...............................................4 6.2.Power Board.............................................26
2.LCD Monitor Description........................................6 6.3.Key Board...............................................29
3.Operation Instruction............................................7 7.PCB Layout.....................................................30
3.1.General Instructions.........................................7 7.1.Main Board.................................................30
3.2.Control Button......................................................7 7.2.Power Board..........................................32
3.3.OSD Menu.............................................................8 7.3.Key Board....................................................35
4.Input/Output Specification.......................................12 8.Maintainability................................................36
4.1.Input Signal Connector.........................................12 8.1.Equipments and Tools Requirement...............36
4.2.Power Supply Requirements...............................13 8.2.Trouble Shooting..........................................37
4.3.Factory Preset Display Modes................................13 9.White-Balance, Luminance adjustment.............43
4.4.Panel Specification...............................................14 10.Monitor Exploded View.................................45
5.Block Diagram.........................................................17 11.BOM List...................................................46
5.1.Software Flow Chart..........................................17 12.Different Parts List.......................................60
SAFETY NOTICE
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE
CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
9.
10.
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17" LCD Color Monitor AOC 719Va
11. Revision List
Version Release Date Revision History TPV Model Name
A00 May.14, 2008 Initial release T77SRHDBK1A1DN
T77SRHDBK1AC5N
A01 July 28, 2008 Add new BOM
T77SRHNCK1GLDN
A02 Sep.04, 2008 Add new BOM T77SRHDBK1AADN
A03 Oct.29, 2008 Add new BOM T78SRHNCK1SPDN
A04 Dec.26, 2008 Add new BOM T78SRHNCK1SCDN
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17" LCD Color Monitor AOC 719Va
Important Safety Notice
Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service
procedures recommended by AOC and described in this service manual are effective methods of performing service
operations. Some of these service operations require the use of tools specially designed for the purpose. The
special tools should be used when and as recommended.
It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in
order to minimize the risk of personal injury to service personnel. The possibility exists that improper service
methods may damage the equipment. It is also important to understand that these CAUTIONS and NOTICES ARE
NOT EXHAUSTIVE. AOC could not possibly know, evaluate and advise the service trade of all conceivable ways in
which service might be done or of the possible hazardous consequences of each way. Consequently, AOC has not
undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not
recommended by AOC must first satisfy himself thoroughly that neither his safety nor the safe operation of the
equipment will be jeopardized by the service method selected.
Hereafter throughout this manual, AOC Company will be referred to as AOC.
WARNING
Use of substitute replacement parts, which do not have the same, specified safety characteristics may create shock,
fire, or other hazards.
Under no circumstances should the original design be modified or altered without written permission from AOC.
AOC assumes no liability, express or implied, arising out of any unauthorized modification of design.
Servicer assumes all liability.
FOR PRODUCTS CONTAINING LASER:
DANGER-Invisible laser radiation when open AVOID DIRECT EXPOSURE TO BEAM.
CAUTION-Use of controls or adjustments or performance of procedures other than those specified herein may
result in hazardous radiation exposure.
CAUTION -The use of optical instruments with this product will increase eye hazard.
TO ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY ORIGINAL MANUFACTURER'S
REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR PART NUMBERS IN THE PARTS LIST SECTION OF
THIS SERVICE MANUAL.
Take care during handling the LCD module with backlight unit
-Must mount the module using mounting holes arranged in four corners.
-Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the screen.
-Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in damage to
the panel.
-Protect the module from the ESD as it may damage the electronic circuit (C-MOS).
-Make certain that treatment person's body is grounded through wristband.
-Do not leave the module in high temperature and in areas of high humidity for a long time.
-Avoid contact with water as it may a short circuit within the module.
-If the surface of panel becomes dirty, please wipe it off with a soft material. (Cleaning with a dirty or rough cloth may
damage the panel.)
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17" LCD Color Monitor AOC 719Va
1. Monitor Specifications
Model number 719Va
Driving system TFT Color LCD
Viewable Image
432mm diagoanl
Size
LCD Panel Pixel pitch 0.264mm(H) x 0.264mm(V)
Video R, G, B Analog lnterface & Digital Interface
Separate Sync. H/V TTL
Display Color 16.7M Colors
Dot Clock 135 MHz
Horizontal scan
31 kHz - 80 kHz
range
Horizontal scan
337.920mm
Size(Maximum)
Vertical scan
56 Hz - 75 Hz
range
Vertical scan
270.336mm
Size(Maximum)
Optimal preset
1280 x 1024 (60 Hz)
resolution
Resolution Highest preset
1280 x 1024 (75 Hz)
resolution
Plug & Play VESA DDC2B/CI
Input Connector D-Sub 15pin & DVI-D
Analog: 0.7Vp-p(standard), 75 OHM, Positive &
Input Video Signal
DVI-D Digital Interface (TMDS)
Power Source 100~240VAC, 50/60Hz
Power
Active < 37 W
Consumption
Standby < 2 W
Speakers 2 x 1.5W
Physical Connector Type 15-pin Mini D-Sub & DVI-D
Characteristics Signal Cable Type Detachable
Dimensions &
Weight:
Height (with base) 371.6 mm
Width 383.4 mm
Depth 190 mm
4
17" LCD Color Monitor AOC 719Va
Weight (monitor
3.86 kg
only)
Weight (with
5.41 kg
packaging)
Temperature:
Operating 0