AOC E1621SW - User manual

15.6" LCD Color Monitor AOC e1621Sw
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Service
Service
Service
HorizontalFrequency
30-60kHz
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.
Table of Contents……….…………………………………...1
Revision List………………………………………………....2
Important Safety Notice…………………………………… 3
1. Monitor Specification..............................…………........4
2. LCD Monitor Description…………………………….......5
3. Operation Instructions....................................…...........6
3.1. General Instructions...........................…....................6
3.2. Control Buttons………………………….…................6
3.3 Adjusting the Picture...................................................7
4. Input/Output Specification............……………............20
4.1. Input Signal Connector..............……….................20
4.2. Factory Preset Display Modes...........…..................20
4.3. Panel Specification…………………………………...21
5. Block Diagram….........................................................24
5.1 Main Board……………………………………….…….24
5.2. Power Board………………………………………......25
6. Schematic…………….............................................26
6.1. Main Board....………...........................................26
6.2. Power Board……………………………………....30
6.3. Key Board…………………...….…………………32
7. PCB Layout...…………...........................................33
7.1. Main Board………...............................................33
7.2. Power Board…………………………..……………37
7.3. Key Board…........................................................40
8. Maintainability………..............................................41
8.1. Equipments and Tools Requirement....................41
8.2. Trouble Shooting……........................................42
9. White-Balance, Luminance Adjustment……….…..46
10. Monitor Exploded View………………………........48
11. BOM List…...........................................................50
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

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Revision List
Version Release Date Revision History TPV Model Name
A00 Aug.03.2011 Initial release
T6BCSR2QW1E6NN
T6BCSR2PW1E6NN

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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 Specification
Panel
Model number e1621Sw
Driving system TFT Color LCD
Viewable Image Size 39.6cm diagonal
Pixel pitch 0.252mm(H) x 0.252mm(V)
Video R, G, B Analog interface
Separate Sync. H/V TTL
Display Color 16.7M Colors
Dot Clock 90MHz
Resolution
Horizontal scan range 30 kHz - 60 kHz
Horizontal scan Size(Maximum) 344.232mm
Vertical scan range 60Hz
Vertical scan Size(Maximum) 193.536mm
Optimal preset resolution 1366 x 768 (60 Hz)
Highest preset resolution 1366 x 768 (60 Hz)
Plug & Play VESA DDC2B/CI
Input Connector D-Sub 15pin
Input Video Signal Analog: 0.7Vp-p(standard), 75 OHM, TMDS
Power Source 100~240 V~, 50/60Hz
Power Consumption Active < 14.5W
Standby < 0.7W
Physical
Characteristics
Connector Type 15-pin Mini D-Sub
Signal Cable Type Detachable
Dimensions & Weight:
Height (with base) 301.2 mm
Width 373 mm
Depth 142.6 mm
Weight (monitor only) 1.7kg
Environmental
Temperature:
Operating 0° to 40°
Non-Operating -20°to 60°
Humidity:
Operating 10% to 85% (non-condensing)
Non-Operating 5% to 93% (non-condensing)
Altitude:
Operating 0~ 3658m (0~ 12000 ft )
Non-Operating 0~ 12192m (0~ 40000 ft )

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2. LCD Monitor Description
The LCD Monitor will contain a main board, a power board and a key board which house the flat panel control logic,
brightnesscontrollogicandDDC.
The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips
each voltage.
Video signal, DDC
Power Board
Flat Panel and
LED backlight
Main Board RS232 Connector
For white balance
adjustment in
factory mode
HOST Computer
LED Drive
AC-IN
100V~240V
Monitor Block Diagram
Key board

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3. Operation Instructions
3.1 General Instructions
Press the power button to turn the monitor on or off. The other control knobs are located at front panel of the monitor.
By changing these settings, the picture can be adjusted to your personal preferences.
3.2 Control Buttons
Power
Press the Power button continuously to turn off the monitor.
4:3 or wide image ratio hot key
There is no OSD, press + continuously to change 4:3 or wide image ratio. (If the product screen size is 4:3 or input
signal resolution is wide format, the hot key is disabling to adjust.)
Eco Mode / -
Press the Eco key continuously to select the Eco mode of brightness when there is no OSD (Eco mode hot key may
not be available in all models).
Auto / Exit
When the OSD is closed, press the Auto button will be auto configure hot key function.

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3.3 Adjusting the Picture
OSD Settings
1) Press the MENU-button to activate the OSD window.
2) Press - or + to navigate through the functions. Once the desired function is highlighted, press the MENU
-button to activate sub-menu. Once the desired function is highlighted, press MENU-button to activate it.
3) Press - or + to change the settings of the selected function. Press - or + to select another function in sub-menu.
Press AUTO to exit. If you want to adjust any other function, repeat steps 2-3.
4) OSD Lock Function: To lock the OSD, press and hold the MENU button while the monitor is off and then press
power button to turn the monitor on. To un-lock the OSD - press and hold the MENU button while the monitor
is off and then press power button to turn the monitor on.
Notes:
1) If the product has only one signal input, the item of "Input Select" is disabling to adjust.
2) If the product screen size is 4:3 or input signal resolution is wide format, the item of "Image Ratio" is disabling to
adjust.
3) One of DCR, Color Boost, and Picture Boost functions is active; the other two functions are turned off
accordingly.

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4. Input/Output Specification
4.1 Input Signal Connector
D-Sub 15pin Connector
Pin Number 15-Pin Side of the Signal Cable
1 Video-Red
2 Video-Green
3 Video-Blue
4 N.C.
5 Detect Cable
6 GND-R
7 GND-G
8 GND-B
9 +5V
10 Ground
11 N.C.
12 DDC-Serial data
13 H-sync
14 V-sync
15 DDC-Serial clock
4.2 Factory Preset Display Modes
Stand Resolution Horizontal Freq.(KHz) Vertical Freq.(Hz)
VGA 640x480@60Hz 31.469 59.940
SVGA 800x600@60Hz 37.879 60.317
XGA 1024x768@60Hz 48.363 60.004
WXGA
1360x768@60Hz 47.712 60.015
1366x768@60Hz 47.712 59.790