Giáo trình sửa chữa màn hình LCD - Chương8

Giáo trình sửa chữa màn hình LCD

LCD Monitor Service Guide for L2 (Module) Repair Model: VW192 Series V1.0 RESTRICTIONS ON USE OF MATERIALS This manual is only for ASUS authorized service centers to repair ASUS LCD product. The documents are provided as is and no copy, reproduction or transfer shall be made without first acquiring prior written approval from ASUSTEK. All rights reserved 2Release Version List Version Issue Date Remarks V1.0 2006.09.05 First Release 3Index I. VW192 Series LCD Monitor Overview 1 II. Product Specification 2 III. MMI .3 Front side 3 Back side 5 IV. Menu & Operating Mode .6 V. Disassembly & Assembly 7 1. Precaution .7 2. Suggest Tools 8 3. Disassembly Procedure .9 3.1 Stand Subsystem .10 3.2 Board Subsystem 11 3.3 Panel Subsystem .19 4. Assemble Procedure .21 4.1 Panel Subsystem .22 4.2 Board Subsystem .24 4.3 Stand Subsystem .32 VI. HW Block Diagram .33 I. VW192 Series LCD Monitor Overview Main product features include z 19” Screen 1440 *900 z 5ms Response Time (Tr+Tf) with 300nits/700:1 Contrast Ratio z 160/160 degree Wide Viewing Angle z SPLENDIDTM Video Intelligence Technology z Protection glass (For VW192G only) z Dual Video Input (For VW192T only) z 5 Video Preset Modes (Hotkey) z 3 Skin-tone selections z Built-in Stereo Speakers (For VW192S/Tonly) z VESA Wall Mounting 2II. Product Specification D-SUB DVI Audio GlassVW192T Y Y Y VW192S Y Y VW192D Y VW192G Y Y Technical Specification Panel Size 19" Wide (16:10) Response Time 5ms Protection Glass Yes (For VW192G only) Brightness (Max.) 330cd/m2 Contrast Ratio (Max.) 700:1 Viewing Angle (H/V) 160/160 Max. Resolution WXGA+ 1440*900 Pixel Pitch 0.285mm Panel Display Color 16.2M Splendid (Video Intelligence) Yes Analog 15-Pin D-Sub Inputs PC Audio Line-in 3.5mm mini jack Output Speaker 1W x 2 Stereo Tile +20~-5 Wall Mounting (VESA) Yes(100mm) ME Color Black Security Kensington lock Yes Power Supply AC: 100~240V Power on mode <46W Power Standy by mode <2W Net (WxHxD) 458x368x207 mm Dimension Packing (WxHxD) 500x424x152 mm Net 4.3kg Weight Gross 5.8kg Accessory D-sub cable, Audio cable, Power cord, Quick Start Guide Regulation Approval TCO03, VCCI, Energy Star 2006, UL/cUL, CB, CE, FCC, CCC, BSMI, Gost-R, C-Tick, PSB, MIC, WHQL 3III. MMI Front side 1. SPLENDID Button: z Use this hotkey to switch from five video preset modes (Game Mode, Night View Mode, Scenery Mode, Standard Mode, and Theater Mode) with SPLENDID™ Video Enhancement Technology. z Exit the OSD menu or go back to the previous menu as the OSD menu is active. z Automatically adjust the image to its optimized position, clock, and phase by pressing this button for 2-4 seconds. 2. ◄−Button: z Press this button to decrease the value of the function selected or move to the previous function. z This is also a hotkey for Volume adjustment. 3. MENU Button: z Press this button to enter/select the icon (function) highlighted while the OSD is activated. 44. −►Button: z Press this button to increase the value of the function selected or move to the next function. z This is also a hotkey for Brightness adjustment. 5. Power button z Press this sensor to turn the monitor on/off 6. Power indicator z The color definition of the power indicator is as the below table. LED Status Description Blue Power ON Amber Standby mode OFF Power OFF 5Back side Rear connectors (form let to right) 1. PWR port. This port connects the power connector from the bundled power cord. 2. DVI port. This 24-pin port is for PC (Personal Computer) DVI-D digital signal connection. (Only for some models) 3. VGA port. This 15-pin port is for PC VGA connection. 4. Audio-in port. This port connects PC audio source by the bundled audio cable. (Only for some models) Rear Connectors 6IV. Menu & Operating Mode Menu Splendid Image Color (1) Scenery Mode (2) Standard Mode (3) Theater Mode (4) Game Mode (5) Night View Mode (1) Brightness (2) Contrast (3) Sharpness (4) Saturation (5) Position (For VGA only)(6) Focus (For VGA only) (1) Color Temp. (2)Skin Tone Input Select System Setup (1) <VGA> (1) Volume (2) OSD Setup (3) Language (4) Information (5) Reset Supported Operating Mode Standard Resolution Horizontal Frequency Vertical FrequencyPixel Frequency DOS 720×400 31.47KHz 70Hz 28.32MHz 640×480 31.47KHz 60Hz 25.18MHz 640×480 37.90KHz 72Hz 31.50MHz VGA 640×480 37.50KHz 75Hz 31.50MHz 800×600 35.16KHz 56Hz 36.00MHz 800×600 37.90KHz 60Hz 40.00MHz 800×600 48.10KHz 72Hz 50.00MHz SVGA 800×600 46.90KHz 75Hz 49.50MHz 1024×768 48.40KHz 60Hz 65.00MHz 1024×768 56.50KHz 70Hz 75.00MHz XGA 1024×768 60.02KHz 75Hz 78.75MHz 1280×1024 64.00KHz 60Hz 108.00MHz SXGA 1280×1024 80.00KHz 75Hz 135.00MHz VESA 1152×864 67.50KHz 75Hz 108.00MHz VESA (Primary) 1440×900 55.90KHz 60Hz 106.00MHz ＊Modes not listed in the table may not be supported. For optimal resolution, we recommend that you choose a mode listed in the table above. 7V. Disassembly & Assembly 1. Precaution Please read the precautions as follows to prevent any damages to the LCD Monitor and also select the appropriate tools for disassembly and re-assembly.  Make sure all power connection is removed. Be sure that the LCD Monitor is in power off status.  Prepare soft cloth and sponge as working platform to place LCD monitor horizontally.  Hold LCD by the side carefully and DON’T touch or press panel directly.  Remove all rings, watches and any other metal objects from your hands which possible to cause scratch.  Always wear a ground strap or anti-static glove to protect the parts from static discharge. ESD (electro-static discharge) protection is required to guarantee the safety of product and personnel. [...]...2 Suggest Tools Here are some tools that can be used for the LCD monitor’s service and repair Philips-head Screwdriver Use a Philips-head screwdriver to fasten/remove the K- or B-typed screws P/N：N/A Gloves To protect LCD Panel and your hand P/N: (L) 1 6-0 03300131 (M) 1 6-0 03300130 C/D Disassembly Tool Use C/D Disassembly Tool to open cosmetic cover and avoid scratch... Stand subsystem 21 4.1 Panel Subsystem 1 Following the steps, take out LAMP CABLE form the hole of LCD left BRACKET, and then assemble left BRACKET and LCD PANEL 1 3 2 Assemble right BRACKET and LCD panel 3 Tighten 4 screws on both sides 22 4 Locate LCD in BEZEL and press down to fix it 5 Secure 6 screws on LCD PANEL 23 4.2 Board Subsystem Main Board and Power Board 1 Insert LVDS CABLE 2 Assemble POWER... Power Board 1 Remove POWER BOARD MYLAR 2 Release 2 screws on D-SUB PORT and DVI PORT (For VW192T only) 3 Release 4 screws on POWER BOARD and 2 screws on MAIN BOARD 4 Take out POWER BOARD and MAIN BOARD 17 5 Separate POWER BOARD and MAIN BOARD 6 Pull out LVDS CABLE carefully 18 3.3 Panel Subsystem 1 Remove 6 screws on LCD PANEL 2 Lift the LCD PANEL and separate from BEZEL carefully 3 Remove 4 screws... both sides 19 4 Dismount Left and right BRACKETS 20 4 Assemble Procedure Information in this section is to perform the assembly procedure of the LCD monitor Asus VW192 Series LCD monitor consists of various subsystems This section describes the procedures for LCD monitor assembly In addition, the detailed assembly procedures of individual modules will be provided for your service needs The assembly procedure... P/N: N/A 8 3 Disassembly Procedure Information in this section is to perform the disassembly procedure of the LCD monitor Depending on the failures, replace the defective parts accordingly Asus VW192 Series LCD Monitor consists of various subsystems This section describes the procedures for LCD monitor disassembly In addition, the detailed disassembly procedures of individual subsystem will be provided... secure 4 screws on D-SUB PORT and DVI PORT(For VW192T only) 6 Paste POWER BOARD MYLAR 25 Main Shielding 1 Insert LVDS CABLE 2 Cover MAIN SHIELDING over LCD PANEL 3 Tighten 4 screws on MAIN SHIELDING 26 Speaker Module 1 Mount SPEAKER MODULE 2 Secure 4 screws on SPEAKERS 3 Paste 2 pieces of TAPE 27 Cables 1 Plug LAMP CABLES 2 Connect SPEAKER CABLE 3 Place KEY BOARD and KEY BOARD CABLE over LCD 28 4 Connect . be used for the LCD monitor’s service and repair. Philips-head Screwdriver Use a Philips-head screwdriver to fasten/remove the K- or B-typed screws P/N：N/A. (Video Intelligence) Yes Analog 15-Pin D-Sub Inputs PC Audio Line-in 3.5mm mini jack Output Speaker 1W x 2 Stereo Tile +20 ~-5 Wall Mounting (VESA) Yes(100mm)