AOC FSC X17-9 User manual

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Service
Service
Service
Horizontal Frequency
30kHz – 82kHz
Table Of Contents
Description Page Description Page
N
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 Instruction…………...............……...........6
3.1 General Instructions...........................…...........6
3.2 Control Button…………….…..............……...............6
3.3 Adjusting the Picture...........................…............7
4. Input/Output Specification............……………............11
4.1 Input Signal Connector.................………….................11
4.2 Factory Preset Display Modes....................................12
4.3 Power supply features………………………………..…12
4.4 Panel Specification.....……………………....................13
5. Block Diagram……....................…….………................16
5.1 Software Flow Chart….………………………....….......16
5.2 Electrical Block Diagram……..……………..….....…18
6.Schematic……………....................................…20
6.1 Main Board.…….....……..........................................20
6.2 Power Board..…………..……..................................24
7. PCB Layout..……………….......................................27
7.1 Main Board……………….........................................27
7.2 Power Board………....………...................................29
7.3 Key Board………………………………………………29
8.Maintainability………........................……...............31
8.1 Equipments and Tools Requirement……..…..............31
8.2 Trouble Shooting…….…………..................................32
9.White-Balance,Luminance adjustment.........................38
10.Monitor Exploded View……...….……………............40
11.BOM List...………........................................................41
12.Different Parts List.…..…….……………………….…...58
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

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Revision List
Revision Date Revision History TPV Model
A00 Mar-10-08 Initial Release T78GMRDBHLM6AC
A01 Sep-29-08 Add new BOM T7RAMRDBHLM5AC

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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
Item Specification
System 43.27cm (17”) color LCD
Outline Dimension 358.5(H) x 296.5(V) x 16.0(D) mm(Typ.)
Pixel Pitch 0.264mm (H) /0.264 mm (V)
Resolution 1280 x 1024
Dot pitch 0.088 mm (H) / 0.264 mm (V)
Display Colors 16.7M (8-bit)
Viewing Angle（CR=10）160°(H);160°(V) (type)
Viewing Angle（CR=5）176°(H);170°(V) (type)
Contrast 800:1(type)
Luminance 300cd/m²(type)
Panel
Response time (type) 5ms
Video Analog: 0. 7Vp-p(standard), 75 OHM, Positive
Dot Clock ≤135MHz
H-Frequency 30kHz – 82kHz
Input
V-Frequency 56-75Hz
AC supply voltage: 100 V - 240 V, 50 Hz - 60 Hz
Synchronisation Separate Sync. TTL, positive or negative
Total power consumption:
< 37 W in normal mode
< 1 W in energy-saving mode (standby mode, suspend mode and OFF mode)
Main Dimensions(W x H x D)
Width: 373.3mm
Height: 376.9mm
Depth: 200.3mm (incl. Stand)
Environmental Condition Operating temperature: +5°C - +35°C;
Operating Humidity: 20% - 85%
Accessories Power cable (1.8 m) D-SUB data cable (1.8 m) Audio cable (1.8 m)

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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, brightness control logic and DDC.
The power board will provide AC to DC Inverter voltage to drive the backlight and the main board chips each voltage.
Monitor Block Diagram
Video signal, DDC
Power Board
(Contains Adapter, Inverter)
Flat Panel and
CCFL backlight
Main Board
Key board
RS232 Connector
For white balance
adjustment in factory
mode
HOST Computer
CCFL Drive.
AC IN
100V ~ 240V

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3. Operating Instructions
3.1 General Instructions
Press the power button to turn the monitor on or off. The other control buttons are located in the front of the monitor.
By changing these settings, the picture can be adjusted to your personal preferences.
-The power cord should be connected.
-Connect the video cable from the monitor to the video card.
-Press the power button to turn on the monitor, the power indicator will light up.
3.2 Control Button
Use the buttons of the control panel to make the following monitor settings directly while the OSD menu is switched
off.

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3.3 Adjusting the Picture

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4. Input/Output Specification
4.1 Input Signal Connector

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4.2 Preset operating modes
The picture position and size have been set to optimum values at the factory for the operating modes listed above.
Depending on the screen controller used, it may be necessary to adjust the display position and size. In this case,
you can change and save the settings (see "Operation of the monitor").
4.3 Power Supply Features
• A/C Line voltage range: 100 V - 240 V
• A/C Line frequency range: 50 Hz - 60Hz
• Current: 1.5 A max. at 100V/1.5A max. at 240V
• Peak surge current: < 60A peak at 240 V AC and cold starting
• Leakage current: < 3.5mA for power from Wall-outlet
• Power line surge: No adverse effects (no loss of information or defect) with a maximum of 1
half wave missing per second
Power factor correction According to EN 61000-3-2 or power consumption is< 75W

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4.4 Panel Specification
4.4.1 General Description
The LM170E03-TLL1 is a Color Active Matrix Liquid Crystal Display with an integral Cold Cathode Fluorescent
Lamp(CCFL) backlight system. The matrix employs a-Si Thin Film Transistor as the active element.
It is a transmissive type display operating in the normally white mode. This TFT-LCD has a 17.0 inch diagonal
measured active display area with SXGA resolution(1024 vertical by 1280 horizontal pixel array).
Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arranged in vertical stripes. Gray scale
or the brightness of the sub-pixel color is determined with a 8-bit gray scale signal for each dot, thus, presenting a
palette of more than 16.7M colors with A-FRC(Advanced-Frame Rate Control).
The LM170E03-TLL1 has been designed to apply the interface method that enables low power, high speed,low EMI.
FPD Link or compatible must be used as a LVDS(Low Voltage Differential Signaling) chip.
The LM170E03-TLL1 is intended to support applications where thin thickness,wide viewing angle, low power are
critical factors and graphic displays are important. In combination with the vertical arrangement of the sub-pixels, the
LM170E03-TLL1 characteristics provide an excellent flat panel display for office automation products such as
monitors.
4.4.2 Displays Characteristics (For LM170E03-TLL1)

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4.4.3 Optical Characteristics

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4.4.4 Electrical Characteristics

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5. Block Diagram
5.1 Software Flow Chart
1
2
N
Y
5
Y
N
10
Y
N
12
Y
N
7
Y
N
6
4
3
8
9
14
11
13
Y
N
15
Y
N
16
17
19
Y
N
18

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1). MCU initialize.
2). Is the EEPROM blank?
3). Program the EEPROM by default values.
4). Get the PWM value of brightness from EEPROM.
5). Is the power key pressed?
6). Clear all global flags.
7). Are the AUTO and SELECT keys pressed?
8). Enter factory mode.
9). Save the power key status into EEPROM. Turn on the LED and set it to green color. Scalar initialize.
10). In standby mode?
11). Update the life time of back light.
12). Check the analog port, are there any signals coming?
13). Does the scalar send out an interrupt request?
14). Wake up the scalar.
15). Are there any signals coming from analog port?
16). Display "No connection Check Signal Cable" message. And go into standby mode after the message
disappears.
17). Program the scalar to be able to show the coming mode.
18). Process the OSD display.
19). Read the keyboard. Is the power key pressed?

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5.2 Electrical Block Diagram
5.2.1 Scalar Board Block Diagram
OSD
Control Interface
(KEYPAD CN201)
Scalar TSUM16AWR-LF-1 MSTAR
(Include ADC, OSD, MCU)
(U401)
D-Sub Connector
(CN101)
Hsync,
Vsync
R
G
B
RXD
TXD
DDC1_SDA
DDC1_SCL
Panel Interface
(CN301)
Crystal
14.318 MHz
X201
EEPROM
(U703)
M24C02-WM
N6TP

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5.2.2 Inverter/Power Board Block Diagram
EMI filter Bridge
Rectifier and
Filter
Start Circuit
R904, R932, R933
PWM
Control IC
Transformer
Feedback
circuit
Rectifier
Diodes
AC input
5V
12V
ON/OFF
Control
PWM
Control IC
Feedback
Circuit
OSC and
Output
DC
Convert
MOSFET
Q802, Q803
Over Voltage
protect
Lamp
ON/OFF
DIM
CN902

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6. Schematic
6.1 Main Board