AOC 198PW User manual

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Service
Service
Service
Horizontal Frequency
30kHz- 82kHz
TABLE OF CONTENTS
Description Page Description Page
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
Table Of Contents.......……..............................…........1
Revision List.…............................................……......2
Important Safety Notice.………….......................……......3
1. Monitor Specification..............................………........4
2. Operating Instructions…………………….……….......5
2.1 Front Panel Control Knobs..……………...................5
2.2 OSD Operations……..........…...........…...........6
2.3 Factory modes adjustment.…............……...............8
2.4 How To Connect .………........................…............9
2.5 ISP Instruction ……..............……………............12
3 Input/Output Specification…………..........................16
3.1 Input Signal Connector……......................................16
3.2 RGB Input Signal Timing …….....……......................17
4. Mechanical Instructions…………………..................18
5. Repair Flow Chart ……………………….……….....23
6. PCB Layout ………….……………………....….......29
6.1 Main Board.………….….......................................29
6.2 Power Board…………..……..............................31
6.3 Key Board…………...................................34
6.4 IR Board …................….......................36
6.5 DC-DC Board....…...………...............................36
7. Schematic Diagram.……....................................37
7.1 Main Board.………………………………..….37
7.2 Power Board…..…....………………….......47
7.3 Tuner Board..………...........................…..49
7.4 Earphone Board..………...........................…..50
7.5 IR Board..……….……...........................…..51
7.6 Key Board…………………...........................…..52
7.7 USB Board..…………..................................…..53
7.8 Adapter Board..………….............................…..54
8. Block Diagram…………..….……………………...55
8.1 Main Board………….…..………………………..55
8.2 Exploded View…....……....................................56
9.BOM List…………...……...................................57

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Revision List
Version Release Date Revision Instructions TPV Model
A00 Apr.-28-2007 Initial Release V19HM3MDW4A1UP

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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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1. Monitor Specifications

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2. Operations Instructions
2.1 Front Panel Control Knobs

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2.2 OSD Operations

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Function Control Illustration

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LED Indicators
Setup Bluetooth Software
The attached CD has blue tooth setup software ,you should setup the blue tooth software when you use this
application . please Click here “ Setup Bluetooth Application ”, then follow up the setup guide to complete the
setting .
2.3 Factory modes adjustment
Into the factory mode
Turn on power, pull out the power cord, press the Menu button, and then plug the power cord, that will Auto
adjust the picture to default. At the same time the factory OSD will be at the left top of the panel.
A, Bias adjustment
Set the Contrast to50.
Set the Brightness to 80.
B. Gain adjustment:
Move cursor to “-F-” and press MENU key
Adjust 7800k color-temperature
1、Select the “AUTO LEVEL” option to auto adjust the picture to default,
2、Press “MENU” button, adjust 7800K color-temperature and the parameter is
x = 296 ±20, y = 311 ±20, Y = 180 ±10 cd/m2
Adjust 6500k color-temperature
1、Select the “AUTO LEVEL” option to auto adjust the picture to default,
2、Press “MENU” button, adjust 6500K color-temperature and the parameter is
x = 313 ±20, y = 329 ±20, Y = 180 ±10 cd/m2
Turn off the Power-button to quit from factory mode.

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2.4 How To Connect
Performing the procedure below.
1. Connect the power cable to the AC port on the back of the monitor.
2. Connect one end of the 15-pin DVI-I cable to the back of the monitor and connect the other end to the computer's
D-Sub port.
3. Connect the audio cable to audio in port on the back of the monitor
4. Connect the microphone cable to audio in port on the back of the monitor
5. Turn on your monitor and computer.

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Attaching Wall Mounting Arm
Preparing to Install An Optional Wall Mounting Arm
1. Remove the lid on back cover,
2. Remove the screws on back cover,
3. Remove the screws on stand,

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4. Re-install back cover,

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2.5 ISP Instruction
1) ISP tools requirement
(1) 25PIN LPT cable,
(2) MYSON burn-in board,
(3) DVI-VGA cable
2) Change to VGA Mode.
(1) Run MYSON MCU ISP burn-in tool,
(2) Set parameter,

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Picture 1
Picture 2
MCU T
yp
e
Select this o
p
tion
Burn-in speed,
select default value
Click “create security file”
option.
Select ok

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(3) Lode burn-in file,
Select the MCU software in 198PW ISP_CODE, then click “Open” button, See picture 3,
Picture 3
(4) When the file was loaded, then click “confirm” button, See Picture 4.
Picture 4
Confirm
Open

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(5) Click “RUN”, burn-in is in progress, See the picture 5,
Picture 5
(6) burn-in is completed, See the picture 6,
Picture 6
(6) End

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3. Input/Output Specification
3.1 Input Signal connector
Pin Assignments
DVI Interface Definition
DVI Connector pin Assignments
Plug and Play
Plug & Play DDC2B Feature
This monitor is equipped with VESA DDC2B capabilities according to the VESA DDC STANDARD. It allows
the monitor to inform the host system of its identity and, depending on the level of DDC used, communicate
additional information about its display capabilities.
The DDC2B is a bi-directional data channel based on the I2C protocol. The host can request EDID
information over the DDC2B channel.

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3.2 RGB Input Signal Timing

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4. Mechanical Instructions
1. Remove the screws marked in red to release the back cover,

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2.Remove the screws marked in red to release the stand base。
3. Remove the screws marked in red to release the shield。

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4. Remove the screws marked in red to release the AV iron。
5. Remove the screws marked in red to release the main board,