Aoc Lm929 Lcd Monitor Sm

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service manual monitor lcd AOC LM929

Text of Aoc Lm929 Lcd Monitor Sm

AOC LM929

SERVICE MANUAL19 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 INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RE LIABILITY FOR CHANGES, ERRORS OR OMISSIONS.

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AOC LM929 Table of Content Revision List. 1. Monitor Specifications.. 2. LCD Monitor Description.. 3. Operating Instructions.. 3.1 General Instructions... 3.2 Front Panel Control... 3.3 Adjusting the Picture.. 4. Input/Output Specification... 4.1 Input Signal Connector.. 4.2 Power Supply Requirements 4.3 Factory Preset Display Modes.. 4.4 Panel Specification. 4.4.1 General Features 4.4.2 Display Characteristics.. 4.4.4 Electrical Characteristics 5. Block Diagram. 5.1 Monitor Exploded View.. 5.2 Software Flowing Chart. 5.3 Electrical Block Diagram 5.3.2 Inverter/Power Board.. 6. Schematic. 6.1 Main Board.. 6.2 Power Board... 6.3 Audio Board... 7. PCB Layout. 7.1 Main Board.. 7.3 Audio Board. 7.4 Key Board 7.5 CNPC Board 8. Maintainability. 8.1 Equipments and Tools Requirement 8.2 Trouble Shooting. 8.2.1 Main Board... 8.2.2 Power /Inverter Board. 8.2.3 Keypad Board.. 9. White-Balance, Luminance Adjustment... 10. EDID Content. 11. BOM LIST... 7.2 Power Board... 5.3.1 Main Board... 4.4.3 Optical Characteristics 4 4 5 6 6 6 7 9 9 10 11 12 12 12 12 13 14 14 15 17 17 18 19 19 26 28 29 29 30 31 31 31 32 32 33 33 36 38 39 41 42

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AOC LM929

Revision ListVersion A00 Date Feb-15-06 Revision History Initial Release TPV Model Name T980KAQDBCAOW

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AOC LM929

1. Monitor SpecificationsItems Driving system Type Size LCD Panel Pixel pitch Viewable angle Response time Sync. Type 0.294mm (H) x 0.294mm (V) 170(H) 170(V) Description TFT Color LCD M190EN02 48.0cm(19.0")

H/V TTL

15Pin Analog Input Signal Input H-Frequency V-Frequency ON Mode Power Consumption OFF Mode Display Color Contrast Ratio Dot Clock White Luminance Max. Resolution Plug & Play 24Pin Digital

16.7M colors (RGB 8-bits data). 700:1 135MHz

Power Source

Maximum Screen Size

Environmental Conditions

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//w250cd/m2 1280 x1024 VESA DDC2BTM 100~240VAC,47~63Hz Horizontal : 376.32mm Vertical: 301.056mm Operating Temp: 0C to 40C Storage Temp: -20C to 60C Operating Humidity: 15% to 90% 4

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25 ms

AOC LM929

2. LCD Monitor DescriptionThe 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 provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each voltage.

Monitor Block Diagram

PWPC Board (Include Adapter and Inverter)

jelKeyboard HOST Computer

Main Board

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Audio board

AC-IN 100V-240V

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.nemode

CCFL backlight

tRS232 Connector For white balance adjustment in factory Video signal, DDC

CCFT Drive.

Flat Panel and

AOC LM929

3. Operating Instructions3.1 General InstructionsPress 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

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Name Auto

//wWithin OSD Without OSD Auto configuration Activate the audio menu Exit OSD or back to previous menu VOL-/ 1.Move the cursor to left 2.Decrease the value of the selected item 1.Move the cursor to right 2.Increase the value of the selected item Select Function or select Sub menu Power On / Off GreenOn RedSave 3 4 5 6 VOL+ / MENU POWER Indicate light Activate the audio menu Activate OSD main menu Power On / Off GreenOn RedSave 6

jelVOL+ / MENU POWER LED

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AOC LM929

3.3 Adjusting The Picture

The Description For Control Function: Main Menu Item Sub Menu Item Sub Menu Icon

Menu Icon

Description

jelN/A N/A (D-Sub) N/A (DVI) N/A

Contrast Luminance Brightness

Contrast from Digital-register.

Backlight Adjustment

Focus Image Setup Clock

Adjust Picture Phase to reduce Horizontal-Line noise

.wthe picture. the picture. from EEPROM. 7

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Adjust picture Clock to reduce Vertical-Line noise.

Image Position

H. Position

Adjust the horizontal position of

V. Position

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Adjust the vertical position of

Warm

Recall Warm Color

Temperature from EEPROM.

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Cool

Recall Cool Color Temperature

Color Temp.

User / Red

Red Gain from Digital-register.

User / Green

Green Gain Digital-register.

User / Blue Analog

Blue Gain from Digital-register. Select input signal from analog

.neAdjust Range 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100

Main

Input Select (Dual-Input Model)

Digital

Select input signal from digital

tReset Value Recall Cool Contrast Value Recall Cool Brightness Value Do Auto Config Do Auto Config Do Auto Config Do Auto Config The Color Temperature will be set to Cool. The User R/G/B value(default is 100) will not be Modified by Reset function. N/A N/A

AOC LM929 H. Position Adjust the horizontal position of the OSD. Adjust the vertical position of the OSD. Adjust the OSD timeout. Set OSD display language to English. Set OSD display language to German. Set OSD display language to French. 0-100 50

OSD Setup

V. Position

0-100

50

OSD Timeout

10-120

10

English

N/A

N/A

Deutsch

N/A

N/A

Language Espaol N/A

Set OSD display language to Spain.

Italiano

N/A

N/A

Set OSD display language to

Information

Information

N/A

.wmain menu. Exit OSD 8

Simplified Chinese.

Show the resolution, H/V N/A N/A

frequency and input port of current input timing.

Yes Reset No

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Clear each old status of N/A N/A

Auto-configuration and set the color temperature to Cool.

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Do not execute reset, return to

jelItalian. N/A N/A N/A N/A N/A N/A

Set OSD display language to

Exit

N/A

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Franais

N/A

tN/A The Language will be set to English.

AOC LM929

4. Input/Output Specification4.1 Input Signal Connector1. D-SUB connector Pin No. 1. 2. 3. 4. 5. 6. 7. 8. Description Red Video Green Video Blue Video Monitor Ground DDC-Return Red Ground Green Ground Blue Ground Pin No. 9. 10. 11. 12. 13. 14. 15. Description No Pin! Logic Ground Monitor Ground DDC-Serial Data H-Sync

15 - Pin Color Display Signal Cable

1 6 11

2. DVI-D connector Pin No. 1. 2. 3. 4. 5. 6. 7. 8. 9. Description

ww13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 9

.wPin No. Description TMDS data 3(NC) 5V Power GND (return for +5v,hsync, vsync) Hot Plug Detect TMDS data 0 TMDS data 0 TMDS data 0/5 Shield TMDS data 5(NC) TMDS data 5+(NC) TMDS Clock Shield TMDS Clock + TMDS Clock TMDS data 2 TMDS data 2

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10. 11.

12.

//wTMDS data 4(NC) TMDS data 4(NC) DDC Clock DDC Data Analog Vertical Sync TMDS data 1 TMDS data 1 TMDS data 1/3 Shield TMDS data 3(NC)

TMDS data 2/4 Shield

24 - Pin Color Display Signal Cable

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DDC-Serial Clock

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V-Sync

AOC LM929

4.2 Power Supply RequirementA/C Line voltage range A/C Line frequency range Input Current Peak surge current Leakage current Power line surge Voltage Current : 100 V ~ 240 V : 50 3Hz, 60 3Hz : 1.5A max at 100V; 0.8A max at 240 V : < 55A peak at 240 VAC and cold starting : < 3.5mA : No advance effects (no loss of information or defect) with a maximum of 1 half-wave missing per second : 5VDC 5; 12VDC 5 : 1.5Amp (5V) 2 Amp (12V)

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AOC LM929

4.3 Factory Preset Display ModesVESA MODES Horizontal Nominal Mode Resolution Total Frequency +/- 0.5kHz Sync Polarity Vertical Nominal Freq. +/- 1 Hz Sync Polarity Nominal Pixel Clock (MHz) 640x480@60Hz VGA 640x480@72Hz 640x480@75Hz 800x600@56Hz SVGA 800x600@60Hz 800x600@72Hz 800x600@75Hz 1024x768@60Hz XGA 1024x768@70Hz 1024x768@75Hz SXGA 1280x1024@60Hz 1280x1024@75Hz 800 x 525 832 x 520 840 x 500 1024 x 625 1056 x 628 1040 x 666 1056x625 1344x806 1328x806 1312x800 1688x1066 1688x1066 31.469 37.861 37.500 35.156 37.879 48.077 46.875 48.363 56.476 60.023 63.981 N N N N/P P P P N N P 59.940 72.809 75.00 56.250 N N N N/P P P 25.175 31.500 31.500 36.000 40.000 50.000 49.500 65.000 75.000 78.750 108.000 135.000

jel70.069 75.029 P 60.020 75.025 P Vertical N N P 70.087 70.087 72.1 N N N N 66.667 74.551 60.001 74.927

.wHorizontal 11

79.976

IBM MODES

DOS DOS XGA

720x400@70Hz 640x400@70Hz

900 x 449 800 x 449

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