AOC LM929 - 19" User manual

AOC LM929
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19” LCD MONITOR
LM929
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 INFORMATIONAFTER THE DATE OF PUBLICATION AND DISCLAIMS RE LIABILITY FOR
CHANGES, ERRORS OR OMISSIONS.
SERVICE MANUAL
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Table of Content
Revision List…………………………………………………………………………………………………………. 4
1. Monitor Specifications………………………………………………………………………………………….. 4
2. LCD Monitor Description……………………………………………………………………………………….. 5
3. Operating Instructions………………………………………………………………………………………….. 6
3.1 General Instructions…………………………………………………………………………………………... 6
3.2 Front Panel Control……………………………………………………………………………….………….. 6
3.3 Adjusting the Picture………………………………………………………………………………………….. 7
4. Input/Output Specification……………………………………………………………………………………... 9
4.1 Input Signal Connector……………………………………………………………………………………….. 9
4.2 Power Supply Requirements………………………………………………………………………………… 10
4.3 Factory Preset Display Modes……………………………………………………………………………….. 11
4.4 Panel Specification………………………………………………………………………………………….… 12
4.4.1 General Features………………………………………………………………………………………… 12
4.4.2 Display Characteristics………………………………………………………………………………….. 12
4.4.3 Optical Characteristics…………………………………………………………………………………… 12
4.4.4 Electrical Characteristics………………………………………………………………………………… 13
5. Block Diagram………………………………………………………………………………………………….… 14
5.1 Monitor Exploded View……………………………………………………………………………………….. 14
5.2 Software Flowing Chart……………………………………………………………………………….……… 15
5.3 Electrical Block Diagram……………………………………………………………………………………… 17
5.3.1 Main Board………………………………………………………………………………………………... 17
5.3.2 Inverter/Power Board………………………………………………………….…………………………. 18
6. Schematic……………………………………………………………………………………………………….… 19
6.1 Main Board…………………………………………………………………………………………………….. 19
6.2 Power Board……………………………………………………………………….………………………….. 26
6.3 Audio Board……………………………………………………………………….………………………….. 28
7. PCB Layout………………………………………………………………………………………………………. 29
7.1 Main Board…………………………………………………………………………………………………….. 29
7.2 Power Board………………………………………………………………………….……………………….. 30
7.3 Audio Board…………………………………………………………….……………………………………… 31
7.4 Key Board……………………………………………………………………………………………………… 31
7.5 CNPC Board…………………………………………………………………………………………………… 31
8. Maintainability……………………………………………………………………………………………………. 32
8.1 Equipments and Tools Requirement………………………………………………………………………… 32
8.2 Trouble Shooting…………………………………………………………………………………………….… 33
8.2.1 Main Board………………………………………………………………………………………………... 33
8.2.2 Power /Inverter Board……………………………………………………………………………………. 36
8.2.3 Keypad Board…………………………………………………………………………………………….. 38
9. White-Balance, Luminance Adjustment…………………………………………………………….……….. 39
10. EDID Content……………………………………………………………………………………………………. 41
11. BOM LIST………………………………………………………………………………………………………... 42
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AOC LM929
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Revision List
Version Date Revision History TPV Model Name
A00 Feb-15-06 Initial Release T980KAQDBCAOW
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1. Monitor Specifications
Items Description
Driving system TFT Color LCD
Type M190EN02
Size 48.0cm(19.0")
Pixel pitch 0.294mm (H) x 0.294mm (V)
Viewable angle 170(H) 170(V)
LCD Panel
Response time 25 ms
Sync. Type H/V TTL
15Pin Analog
Input Signal 24Pin Digital
H-Frequency 30kHz – 83kHz
Input
V-Frequency 50-75Hz
ON Mode ≤55W
Power Consumption OFF Mode ≤3W
Display Color 16.7M colors (RGB 8-bits data).
Contrast Ratio 700:1
Dot Clock 135MHz
White Luminance 250cd/m2
Max. Resolution 1280 x1024
Plug & Play VESA DDC2BTM
Power Source 100~240VAC,47~63Hz
Maximum Screen Size Horizontal : 376.32mm
Vertical: 301.056mm
Environmental
Conditions
Operating Temp: 0°C to 40°C
Storage Temp: -20°C to 60°C
Operating Humidity: 15% to 90%
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2. LCD Monitor Description
The LCD MONITOR will contain a main board, a power board, a keypad board and an audio board which house the
flat panel control logic, brightness control logic and DDC.
The power board will provideAC to DC Inverter voltage to drive the backlight of panel and the main board chips
each voltage.
Video signal, DDC
CCFT Drive.
PWPC Board
(
Include Ada
p
ter and Inverter
)
Flat Panel and
CCFL backlight
Main Board
RS232 Connector
For white balance
adjustment in factory
mode
HOST Computer
AC-IN
100V-240V
Monitor Block Diagram
Audio board Keyboard
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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 Front Panel Control
NO. Name Within OSD Without OSD
1 Auto Exit OSD or back to previous menu Auto configuration
2 VOL-/ 1.Move the cursor to left
2.Decrease the value of the selected item Activate the audio menu
3 VOL+ / 1.Move the cursor to right
2.Increase the value of the selected item Activate the audio menu
4 MENU Select Function or select Sub menu Activate OSD main menu
5 POWER Power On / Off Power On / Off
6 Indicate light Green—On Red—Save Green—On Red—Save
AUTO
VOL- /
VOL+ /
MENU
POWER
LED
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3.3 Adjusting The Picture
The Description For Control Function:
Main Menu
Item
Main
Menu
Icon
Sub Menu
Item
Sub Menu
Icon Description Adjust Range Reset Value
Contrast Contrast from Digital-register. 0-100 Recall Cool
Contrast Value
Luminance Brightness Backlight Adjustment 0-100 Recall Cool
Brightness Value
Focus
Adjust Picture Phase to reduce
Horizontal-Line noise 0-100 Do Auto Config
Image Setup Clock
Adjust picture Clock to reduce
Vertical-Line noise. 0-100 Do Auto Config
H. Position
Adjust the horizontal position of
the picture. 0-100 DoAuto Config
Image
Position V. Position
Adjust the vertical position of
the picture. 0-100 DoAuto Config
Warm N/A Recall Warm Color
Temperature from EEPROM. N/A
Cool N/A
Recall Cool Color Temperature
from EEPROM. N/A
User / Red Red Gain from Digital-register. 0-100
User / Green Green Gain Digital-register. 0-100
Color Temp.
User / Blue Blue Gain from Digital-register. 0-100
The Color
Temperature will be
set to Cool.
The User R/G/B
value(default is
100) will not be
Modified by Reset
function.
Analog
N/A Select input signal from analog (D-Sub) N/A N/A
Input Select
(Dual-Input
Model)
Digital N/A
Select input signal from digital
(DVI) N/A N/A
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H. Position
A
djust the horizontal position of
the OSD. 0-100 50
V. Position
Adjust the vertical position of
the OSD. 0-100 50
OSD Setup
OSD Timeout Adjust the OSD timeout. 10-120 10
English N/A
Set OSD display language to
English. N/A
Deutsch N/A
Set OSD display language to
German. N/A
Français N/A
Set OSD display language to
French. N/A
Español N/A
Set OSD display language to
Spain. N/A
Italiano N/A
Set OSD display language to
Italian. N/A
Language
简体中文 N/A Set OSD display language to
Simplified Chinese. N/A
The Language will
be set to English.
Information Information N/A
Show the resolution, H/V
frequency and input port of
current input timing.
N/A N/A
Yes N/A
Clear each old status of
Auto-configuration and set the
color temperature to Cool.
N/A N/A
Reset
No N/A
Do not execute reset, return to
main menu. N/A N/A
Exit N/A N/A Exit OSD N/A N/A
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4. Input/Output Specification
4.1 Input Signal Connector
1. D-SUB connector
Pin No. Description Pin No. Description
1. Red Video 9. No Pin!
2. Green Video 10. Logic Ground
3. Blue Video 11. Monitor Ground
4. Monitor Ground 12. DDC-Serial Data
5. DDC-Return 13. H-Sync
6. Red Ground 14. V-Sync
7. Green Ground 15. DDC-Serial Clock
8. Blue Ground
15 - Pin Color Display Signal Cable
15
610
11 15
2. DVI-D connector
Pin No. Description Pin No. Description
1. TMDS data 2－13. TMDS data 3＋(NC)
2. TMDS data 2＋14. ＋5V Power
3. TMDS data 2/4 Shield 15. GND (return for +5v,hsync, vsync)
4. TMDS data 4－(NC) 16. Hot Plug Detect
5. TMDS data 4＋(NC) 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－(NC)
9. TMDS data 1－21. TMDS data 5+(NC)
10. TMDS data 1＋22. TMDS Clock Shield
11. TMDS data 1/3 Shield 23. TMDS Clock +
12. TMDS data 3－(NC) 24. TMDS Clock －
24 - Pin Color Display Signal Cable
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4.2 Power Supply Requirement
A/C Line voltage range : 100 V ~ 240 V
A/C Line frequency range : 50 ±3Hz, 60 ±3Hz
Input Current : 1.5A max at 100V; 0.8A max at 240 V
Peak surge current : < 55Apeak 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
Voltage : 5VDC ± 5％; 12VDC± 5％
Current : 1.5Amp (5V) ；2 Amp (12V)
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