AOC 193FW User manual

AOC 193FW (+)
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SERVICE MANUAL
19” LCD Monitor
193FW (+)
THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE EFFORT
HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE
ACCURACY OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY FOR
CHANGES, ERRORS OR OMISSIONS.

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Table of Content
Revision List…………………………………………………………………………………………………………. 3
1. Monitor Specifications………………………………………………………………………………………….. 4
2. LCD Monitor Description……………………………………………………………………………………….. 5
3. Operating Instructions………………………………………………………………………………………….. 6
3.1 General Instructions…………………………………………………………………………………………... 6
3.2 Control Buttons………………………………………………………………………………………………... 6
3.3 Adjusting the Picture………………………………………………………………………………………….. 7
4. Input/Output Specification……………………………………………………………………………………... 9
4.1 Input Signal Connector……………………………………………………………………………………….. 9
4.2 Factory Preset Display Modes……………………………………………………………………………….. 9
4.3 Power Supply Requirements………………………………………………………………………………… 10
4.4 Panel Specification………………………………………………………………………………………….… 10
4.4.1Display Characteristics………………………………………………………………………………… 10
4.4.2Optical Characteristics…………………………………………………………………………………… 11
4.4.3 Parameter Guide Line For CCFL Inverter……………………………………………………………… 11
5. Block Diagram………………………………………………………………………………………………….… 12
5.1 Monitor Exploded View……………………………………………………………………………………….. 12
5.2 Software Flow Chart…………………………………………………………………………………………... 13
5.3 Electrical Block Diagram……………………………………………………………………………………… 15
5.3.1 Main Board………………………………………………………………………………………………... 15
5.3.2 Inverter/Power Board………………………………………………………….…………………………. 16
6. Schematic……………………………………………………………………………………………………….… 17
6.1 Main Board…………………………………………………………………………………………………….. 17
6.2 Power Board……………………………………………………………………….………………………….. 24
7. PCB Layout………………………………………………………………………………………………………. 27
7.1 Main Board…………………………………………………………………………………………………….. 27
7.2 Adapter Board………………………………………………………………………….……………………… 28
7.3 Inverter Board ………………………………………………………………………………………………… 28
8. Maintainability……………………………………………………………………………………………………. 29
8.1 Equipments and Tools Requirement………………………………………………………………………… 29
8.2 Trouble Shooting…………………………………………………………………………………………….… 30
8.2.1 Main Board………………………………………………………………………………………………... 30
8.2.2 Adaptor /Inverter/Board………………………………………………………………………………… 33
8.2.3 Keypad Board…………………………………………………………………………………………….. 34
9. White-Balance, Luminance adjustment …………………………………………………………………… 35
10. EDID Content……………………………………………………………………………………………………. 36
11. BOM List………………………………………………………………………………………………………..... 37
12. Different Parts list………………………………………………………………………………………….
181

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Revision List
Version Date Revision History TPV Model Name
A00 Jan-16-06 Initial Release T982KM2HDBAON
A01 Sep-13-06 Add the sold area model T95MM2HLWCCKNP
A02Sep-18-06 Add the sold area model T95MM2HMWCUPNP
A03 Oct-05-06 Add the sold area model
T982KM2NKBA1N
T982KM2NKBA1NP
T95MM2HKWCA1FP
A04 Oct-25-06 Add the sold area model T95MM2HCWCPUNP
A05Nov-22-06 Add TPV Model in item 12 T982KM4HBAE1NP
A06 Nov-30-06 Add BOM in item 11 T982KM2HMBUIN
A07 Jan-26-07 Add BOM in item 11 T96MM2NQWCA1N
A08 Jun-05-07 Add BOM in item 11 T95MM2HCWCCGNP

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1. Monitor Specifications
Items Specifications
LCD Panel
Driving system TFT Color LCD
Size 48.0cm(19.0")
Pixel pitch 0.285mm(H) x 0.285mm(V)
Viewable angle 150˚ (H) 130˚ (V)
Response time (type) 8 ms for AU panel
Input
Separate Sync. H/V TTL
Video 15Pin R, G, B Analog signal
24Pin DVI digital signal
H-Frequency 30kHz – 80kHz
V-Frequency 55-75Hz
Display Color 16.7M colors
Dot Clock 135MHz
Contrast Ratio 500:1
White Luminance 300cd/m2
Max. Resolution 1440 × 900 @60Hz
Plug & Play VESA DDC2BTM
Power Consumption ON Mode<36W
OFF Mode<1W
Power Source 100~240VAC,47~63Hz
Maximum Screen Size Horizontal : 410mm
Vertical: 256mm
Environmental
Considerations
Operating Temp: 5°C to 50°C
Storage Temp: -20°C to 60°C
Operating Humidity: 10% to 85%

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2. LCD Monitor Description
The LCD MONITOR will contain a main board, an adapter, an inverter board and a keypad board which house the
flat panel control logic, brightness control logic and DDC.
The Inverter board will drive the backlight of panel and the DC-DC conversion.
The Adapter will provide the 12V DC-power to inverter/power board.
HOST Computer
AC-IN
100V-240V
Inverter board
Flat Panel and
CCFL backlight
Main Board RS232 Connector
For white balance
adjustment in factory
mode
CCFL Drive.
Video signal
Monitor Block Diagram
Keyboard
Adaptor board
DC-IN
12V

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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 at front panel 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 Buttons
-Power Button:
When pressed, the monitor enters the off mode, and the LED turns blank. Press again to restore normal status.
-Contrast:
Adjust contrast or function adjusts.
- Brightness:
Adjust brightness or function adjusts.
-Auto Adjust button / Exit:
1. When OSD menu is in active status, this button will act as EXIT-KEY (EXIT OSD menu).
2. When OSD menu is in off status, press this button over 2 seconds to activate the Auto Adjustment function.
The Auto Adjustment function is used to set the HPos, VPos, Clock and Focus.
-Power Indicator:
Green — Power On mode.
Red — Off mode.
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.
1. Power Key 2. LED
3. MENU/ENTER 4. Contrast
5. Brightness 6. Auto Adjust Key/Exit

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3.3 Adjusting The Picture
Adjustment steps:
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
it. If the function selected has a sub-menu, press or again to navigate through the sub-menu functions. Once the desired
function is highlighted, press MENU-button to activate it.
3. Press or to change the settings of the selected function.
4. To exit and save, select the exit function. If you want to adjust any other function, repeat steps 2-3.
OSD TABLE:
Main Menu
Item
Main Menu
Icon Sub Menu Item Sub Menu Icon Description
Luminance
Contrast Contrast from Digital-register.
Brightness Backlight Adjustment
Image Setup
Focus
Adjust Picture Phase to reduce
Horizontal-Line noise
Clock Adjust picture Clock to reduce
Vertical-Line noise.
Image
Position
H. Position
Adjust the horizontal position of
the picture.
V. Position
Adjust the vertical position of the
picture.
Color Temp.
Warm N/A Recall Warm Color Temperature
from EEPROM.
Cool N/A Recall Cool Color Temperature
from EEPROM.
User / Red Red Gain from Digital-register.

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User / Green Green Gain Digital-register.
User / Blue Blue Gain from Digital-register.
Input signal
select
Analog
N/A Select the analog signal input
Digital N/A Select the digital signal input
OSD Setup
H. Position
Adjust the horizontal position of
the OSD.
V. Position
Adjust the vertical position of the
OSD.
OSD Timeout Adjust the OSD timeout.
Language
English N/A Set OSD display language to
English.
Deutsch N/A Set OSD display language to
German.
Français N/A Set OSD display language to
French.
Español N/A Set OSD display language to
Spain.
Italiano N/A Set OSD display language to
Italian.
简体中文 N/A Set OSD display language to
Simplified Chinese.
Information Information N/A
Show the resolution, H/V
frequency and input port of current
input timing.
Reset
Yes N/A
Clear each old status of
Auto-configuration and set the
color temperature to Cool.
No N/A Do not execute reset, return to
main menu.
Exit N/A N/A Exit OSD

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4. Input/Output Specification
4.1 Input Signal Connector
Analog connector
DVI-D connector
Pin No. Description Pin No. Description
1. TMDS data 2－13. TMDS data 3＋
2. TMDS data 2＋14. ＋5V Power
3. TMDS data 2/4 Shield 15. GND
4. TMDS data 4－16. Hot Plug Detect
5. TMDS data 4＋17. TMDS data 0－
6. DDC Clock 18. TMDS data 0＋
7. DDC Data 19. TMDS data 0/5 Shield
8. Analog Vertical Sync 20. TMDS data 5－
9. TMDS data 1－21. TMDS data 5＋
10. TMDS data 1＋22. TMDS Clock Shield
11. TMDS data 1/3 Shield 23. TMDS Clock +
12. TMDS data 3－24. TMDS Clock －
24 - Pin Color Display Signal Cable
Pin No. Description Pin No. Description
1. Red Video 9. +5V
2. Green Video 10. Detect Cable
3. Blue Video 11. Ground
4. Ground 12. DDC-Serial Data
5. Ground 13. H-Sync
6. Red Ground 14. V-Sync
7. Green Ground 15. DDC-Serial Clock
8. Blue Ground
VGA connector layout
1
5
6
10
11
15

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4.2 Factory Preset Display Modes：
Standard Resolution Horizontal
Frequency
Vertical
Frequency
Dos-mode
720 × 400
31.47kHz
70.0Hz
VGA
640 × 480
31.47kHz
60.0Hz
640 × 480
37.50kHz
75.0Hz
SVGA
800 × 600
37.879kHz
60.0Hz
800 × 600
46.875kHz
75.0Hz
XGA
1024 × 768
48.363kHz
60.0Hz
1024 × 768
56.476kHz
70.0Hz
1024 × 768
60.021kHz
75.0Hz
SXGA
1280 × 1024
64.000kHz
60.0Hz
1280 × 1024
80.000kHz
75.0Hz
WXGA
1440 × 900
55.935kHz
59.8Hz
4.3 Power Supply Requirements
A/C Line voltage range 100 V ~ 240 V
A/C Line frequency range 50 ±3Hz, 60 ±3Hz
Current 1.5A max at 100V; 0.8A max at 240 V
Peak surge current < 55A peak at 240 VAC and cold starting
Leakage current < 3.5mA
Power line surge No advance effects (no loss of information or defect)
with a maximum of 1 half-wave missing per second
DC output Voltage 5VDC ± 5％; 12VDC± 5％
CURRENT 1.5Amp (5V) ；2 Amp (12V)
4.4 Panel Specification
4.4.1 Display Characteristics