Asus VW198S Service Manual

Asus VW198S Service Manual

19" lcd color monitor
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19" LCD Color Monitor
Service
Service
Service
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.OSD Menu.............................................................7
4.Input/Output Specification.......................................11
4.1.Input Signal Connector.........................................11
4.2.Power Supply Requirements...............................11
4.3.Factory Preset Display Modes................................12
4.4.Panel Specification...............................................13
5.Block Diagram.........................................................15
5.1.Software Flow Chart......................................15
5.2.Electrical Block Diagram...........................17
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.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

TABLE OF CONTENTS

Page
Description
6.Schematic.....................................................19
6.1.Main Board...................................................19
6.2.Power Board.............................................23
6.3.Audio Board.............................................25
7.PCB Layout.....................................................26
7.1.Main Board.................................................26
7.2.Power Board..........................................29
7.3.Audio Board..........................................31
7.4.Key Board....................................................32
8.Maintainability................................................33
8.2.Trouble Shooting..........................................34
10.Monitor Exploded View.................................42
11.BOM List...................................................43
12.Different Parts List....................................56
SAFETY NOTICE
1
ASUS VW198S
Horizontal Frequency
30-82 KHz
Page

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Summary of Contents for Asus VW198S

  • Page 1: Table Of Contents

    19" LCD Color Monitor ASUS VW198S Service Service Service Horizontal Frequency 30-82 KHz TABLE OF CONTENTS Description Page Description Page 6.Schematic……………........19 Table Of Contents..……......…..1 6.1.Main Board………..........19 Revision List.…........……..2 Important Safety Notice.……....……..3 6.2.Power Board...……........23 1.Monitor Specification......………..4 6.3.Audio Board...……........25 2.LCD Monitor Description……………………………..5 7.PCB Layout..…………........26...
  • Page 2: Revision List

    19" LCD Color Monitor ASUS VW198S Revision List Version Release Date Revision History TPV Model Name T97MMGNBPWUSAN Oct.10, 2007 Initial release T97MMGNBPWUEAN T97MMGNTPWUSAZ...
  • Page 3: Important Safety Notice

    19" LCD Color Monitor ASUS VW198S 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.
  • Page 4: Monitor Specification

    19" LCD Color Monitor ASUS VW198S 1. Monitor Specifications...
  • Page 5: Lcd Monitor Description

    19" LCD Color Monitor ASUS VW198S 2. LCD Monitor Description The LCD monitor will contain a main board, an audio board, a power board and a key board which house the flat panel control logic, brightness control logic and DDC.
  • Page 6: Operation Instruction

    19" LCD Color Monitor ASUS VW198S 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 the front of the panel of the monitor. By changing these settings, the picture can be adjusted to your personal preferences.
  • Page 7: Osd Menu

    19" LCD Color Monitor ASUS VW198S 3.2.2 Key Function 3.3 OSD Menu 3.3.1 How to Reconfigure...
  • Page 8 19" LCD Color Monitor ASUS VW198S 3.3.2 OSD Function Introduction...
  • Page 9 19" LCD Color Monitor ASUS VW198S...
  • Page 10 19" LCD Color Monitor ASUS VW198S...
  • Page 11: Input/Output Specification

    19" LCD Color Monitor ASUS VW198S 4. Input/Output Specification 4.1 Input Signal Connector Analog connectors Pin No. Description Pin No. Description Red Video Green Video Logic Ground Blue Video Monitor Ground Monitor Ground DDC-Serial Data DDC-Return H-Sync Red Ground V-Sync...
  • Page 12: Factory Preset Display Modes

    19" LCD Color Monitor ASUS VW198S 4.3 Factory Preset Display Modes...
  • Page 13: Panel Specification

    19" LCD Color Monitor ASUS VW198S 4.4 Panel Specification 4.4.1 General Features M190Z1-L01 is a 19” wide TFT Liquid Crystal Display module with 4 CCFL Backlight unit and 30 pins 2ch-LVDS interface. This module supports 1680 x 1050 WSXGA+ mode and can display 16.7M colors.
  • Page 14 19" LCD Color Monitor ASUS VW198S 4.4.3 Optical Characteristics 4.4.4 Electrical Characteristics (1) TFT-LCD (2) Backlight...
  • Page 15: Block Diagram

    19" LCD Color Monitor ASUS VW198S 5. Block Diagram 5.1 Software Flow Chat...
  • Page 16 19" LCD Color Monitor ASUS VW198S 1) MCU initialize. 2) Is the EPROM blank? 3) Program the EPROM by default values. 4) Get the PWM value of brightness from EPROM. 5) Is the power key pressed? 6) Clear all global flags.
  • Page 17: Electrical Block Diagram

    19" LCD Color Monitor ASUS VW198S 5.2 Electrical Block Diagram 5.2.1 Main Board Panel Interface (CN301) Scalar TSUMU18BWL-LF EEPROM Keypad Interface (Include MCU, ADC, OSD) AF24BC16-SI (CN201) (U202) (U204) H sync V sync Crystal D-Sub Flash Memory 14.31818MHZ Connector PM25LV010A...
  • Page 18 19" LCD Color Monitor ASUS VW198S 5.2.2 Inverter/Power Board AC input Bridge Rectifier Transformer Rectifier diodes EMI filter and Filter Start Circuit: R904, R932, R933 CN902 Feedback Circuit Control IC ON/OFF Output Transformer MOSFET Circuit ON/OFF Lamp Control Feedback Circuit...
  • Page 19: Schematic

    C124 C125 C117 GND POWER DGND T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL ASUS VW198S Size D118 G2698-3-X-X-13-070816 TPV MODEL 絬 隔 瓜 絪 腹 T97MMGDN8WU2AN Key Component 2.0.INPUT PCB NAME 715G2698-3 <称爹>...
  • Page 20 120OHM C303 100uF25V Q301 2N3906S-RTK/PS AO3401L T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL ASUS VW198S Size G2698-3-X-X-13-070816 TPV MODEL T97MMGDN8WU2AN 絬 隔 瓜 絪 腹 Key Component 3.0.OUTPUT PCB NAME 715G2698-3 <称爹> 称爹...
  • Page 21 100uF25V 100uF25V 0.1uF/16V 0.1uF/16V T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size ASUS VW198S G2698-3-X-X-13-070816 TPV MODEL 絬 隔 瓜 絪 腹 T97MMGDN8WU2AN Key Component 4.0.POWER PCB NAME 715G2698-3 <称爹> 称爹 Thursday , August 16, 2007...
  • Page 22 0.1uF/16V 0.1uF/16V 0.1uF/16V M24C16 Near to Connect T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL ASUS VW198S Size 絬 隔 瓜 絪 腹 G2698-3-X-X-13-070816 TPV MODEL T97MMGDN8WU2AN Key Component 5.0.SCALER PCB NAME 715G2698-3 <称爹>...
  • Page 23: Power Board

    19" LCD Color Monitor ASUS VW198S 6.2 Power Board 715G2538-3   1/4W R918 F902 0R05 1/4W 1K 1/4W 1K 1/4W 1K 1/4W 1K 1/4W +12V   1/4W R919 L904 C912 1.1uH 0.001uF ZD902 1/4W R920 RLZ16B   C917 C918 C922...
  • Page 24 19" LCD Color Monitor ASUS VW198S T801 POWER X'FMR D805 R817 R821 R855 C839 BAW56 10K 1/10W 1K 1/10W 1% CN801   1/4W 1000pF CONN F801 C819 0R05 1/4W 0.0022uF +12V C801 C802 10pF/6KV 470uF/25V C824 R801 D801 3.6K 1/10W 0.1uF...
  • Page 25: Audio Board

    19" LCD Color Monitor ASUS VW198S 6.3 Audio Board 715G2767-1 AUDIO+5V R623,R616 USE JUMPER R621 10K OHM CONN +12V AUDIO+5V R624 MUTE# R623 R619 R620 10K OHM STANDBY 10K OHM D601 1N4148 MUTE C601 R617 C614 3.6K OHM 1/4W 1.0uF/50V...
  • Page 26: Pcb Layout

    19" LCD Color Monitor ASUS VW198S 7. PCB Layout 7.1 Main Board 715G2698-3...
  • Page 27 19" LCD Color Monitor ASUS VW198S...
  • Page 28 19" LCD Color Monitor ASUS VW198S...
  • Page 29: Power Board

    19" LCD Color Monitor ASUS VW198S 7.2 Power Board 715G2538-3...
  • Page 30 19" LCD Color Monitor ASUS VW198S...
  • Page 31: Audio Board

    19" LCD Color Monitor ASUS VW198S 7.3 Audio Board 715G2767-1...
  • Page 32: Key Board

    19" LCD Color Monitor ASUS VW198S 7.4 Key Board 715G2546-2...
  • Page 33: Maintainability

    19" LCD Color Monitor ASUS VW198S 8. Maintainability 8.1 Equipments and Tools Requirement Voltmeter. Oscilloscope. Pattern Generator. DDC Tool with an IBM Compatible Computer. Alignment Tool. LCD Color Analyzer. Service Manual. User Manual.
  • Page 34: Trouble Shooting

    19" LCD Color Monitor ASUS VW198S 8.2 Trouble Shooting 8.2.1 Main Board (1). No Power No power Press power key and look if the picture is normal Please reinsert and make sure the AC of 100-240 is normal Reinsert or check the...
  • Page 35 19" LCD Color Monitor ASUS VW198S (2). No Picture No picture Measure U701 PIN2=3.3V Measure U702 PIN2=1.8V Replace U701 or U702 X201 oscillate waveforms are normal Replace X201 Check if the sync signal from computer is output and video cable...
  • Page 36 19" LCD Color Monitor ASUS VW198S (3). White screen White screen Measure Q403 base X201 oscillate waveform is normal is low level? Replace X201 Check Q403 is broken or CN301 solder? Check reset circuit of U202 is normal Check Correspondent Check Correspondent component.
  • Page 37 19" LCD Color Monitor ASUS VW198S 8.2.2 Power/Inverter Board 1.) No power Check CN902 pin4, 5 = 12V Check AC line volt 110V or 220V Check AC input Check the voltage of C905 (+) Check bridge rectified circuit and F901 circuit...
  • Page 38 19" LCD Color Monitor ASUS VW198S 2.) W / LED, No Backlight Check CN902 pin4, 5 = 12V Check adapter or MB Check ON/OFF signal Check Interface board Check IC801 PIN12=12V Change Q808 Check IC801 PIN10, 9 have the output of square wave at short Change IC801 Check Q802, Q803 PIN5, 6, 7, 8 have the output of square wave at short time.
  • Page 39 19" LCD Color Monitor ASUS VW198S 8.2.3 Key Board OSD is unstable or not working Is Key Pad Board connecting normally? Connect Key Pad Board Replace Button Switch Is Button Switch normally? Replace Key Pad Board Is Key Pad Board normally?
  • Page 40: White-Balance, Luminance Adjustment

    = 313 ±20, y = 329 ±20, Y= 150 ±15cd/m 3. Into Factory mode of ASUS VW198S: Press the MENU button, pull out the power cord, and then plug the power cord. Then the factory OSD will be at the left top of the panel.
  • Page 41 19" LCD Color Monitor ASUS VW198S 4. Adjust the RED of color3 on factory window until chroma 7120 indicator reached the value R=100 5. Adjust the GREEN of color3 on factory window until chroma 7120 indicator reachedthe value G=100 6. Adjust the BLUE of color3 on factory window until chroma 7120 indicator reached the value B=100 7.
  • Page 42: Monitor Exploded View

    19" LCD Color Monitor ASUS VW198S 10. Monitor Exploded View...
  • Page 43: Bom List

    19" LCD Color Monitor ASUS VW198S 11. BOM List T97MMGNBPWUSAN Location Part No. Description 040G 581680 1A WARRANTY LABEL 041G 68508 A CONTROL CARD 044G6002842 4A PAPER BOARD 044G9003220 CORNER PAPER 044GH600 1 HANDLE 2 050G 600 1 W WHITE STRAP...
  • Page 44 19" LCD Color Monitor ASUS VW198S CN603 033G3802 4 WAFER EH-4 CN602 033G3802 6 WAFER 040G 457624 1B LABEL-CPU U601 056G 616 1 IC E-TDA7496L ST C601 067G215V471 4N GP KY25VB470M-CC3 10*16 C602 067G215V471 4N GP KY25VB470M-CC3 10*16 C605 067G215Y4713RV LOW E.S.R 470UF +-20% 16V...
  • Page 45 19" LCD Color Monitor ASUS VW198S CN401 033G3802 9 WAFER 9P RIGHT ANELE PITCH CN301 033G801930F CH JS CONNECTOR 040G 457624 1B LABEL-CPU 040G 45762412B CBPC LABEL R402 061G152M519 64 5.1OHM 2W C403 067G 3151014KV EC 105℃ CAP 100UF M 25V...
  • Page 46 19" LCD Color Monitor ASUS VW198S R108 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R225 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R220 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R406 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R102 061G0402102...
  • Page 47 19" LCD Color Monitor ASUS VW198S R111 061G0402560 RST CHIP 56R 1/16W 5% R115 061G0402560 RST CHIP 56R 1/16W 5% R208 061G0402682 RST CHIP 6K8 1/16W 5% R233 061G0402682 RST CHIP 6K8 1/16W 5% R107 061G0402750 RST CHIPR 75 OHM +-5% 1/16W...
  • Page 48 19" LCD Color Monitor ASUS VW198S C213 065G0402104 15 MLCC 0402 0.1UF K 16V X5R C214 065G0402104 15 MLCC 0402 0.1UF K 16V X5R C215 065G0402104 15 MLCC 0402 0.1UF K 16V X5R C216 065G0402104 15 MLCC 0402 0.1UF K 16V X5R...
  • Page 49 19" LCD Color Monitor ASUS VW198S R108 061G0603000 RST CHIPR 0 OHM +-5% 1/10W R103 061G0603102 RST CHIP 1K 1/10W 5% R106 061G0603102 RST CHIP 1K 1/10W 5% C101 065G0603104 37 CHIP 0.1UF 50V/Y5V C102 065G0603104 37 CHIP 0.1UF 50V/Y5V...
  • Page 50 19" LCD Color Monitor ASUS VW198S C915 067G215S4713KV EC 105℃ CAP 470UF M 16V L902 073G 174 65 H LINE FILTER L901 073G 174 76 H FILTER L903 073G 253191 H IND CHOKE 1.1UH DADON L904 073G 253191 YS CHOKE COIL 1.1UH YS04110055...
  • Page 51 19" LCD Color Monitor ASUS VW198S R818 061G0603100 1F RST CHIPR 1 KOHM +-1% 1/10W R821 061G0603100 1F RST CHIPR 1 KOHM +-1% 1/10W R822 061G0603100 1F RST CHIPR 1 KOHM +-1% 1/10W R824 061G0603100 1F RST CHIPR 1 KOHM +-1% 1/10W...
  • Page 52 19" LCD Color Monitor ASUS VW198S R839 061G0805000 0 OHM 1/10W R850 061G0805000 0 OHM 1/10W R804 061G0805101 RST CHIPR 100 OHM +-5% 1/8W R911 061G0805102 RST CHIPR 1KOHM +-5% 1/8W R917 061G0805102 RST CHIPR 1KOHM +-5% 1/8W R929 061G0805102...
  • Page 53 19" LCD Color Monitor ASUS VW198S R857 061G1206330 RST CHIPR 33 OHM +-5% 1/4W R856 061G1206330 RST CHIPR 33 OHM +-5% 1/4W R858 061G1206330 RST CHIPR 33 OHM +-5% 1/4W R904 061G1206472 RST CHIPR 4.7 KOHM +-5% 1/4W R932 061G1206472 RST CHIPR 4.7 KOHM +-5% 1/4W...
  • Page 54 NO.1 LABEL Q41G780068025B EU WARRANTY CARD NON ZBD Q44G6002CP210A PAPER CAP Q44G9064 1 EPS(L) Q44G9064 2 EPS(R) Q44G9064680 3B ASUS 19W CARTON Q45G 76 28V13 PE BAG Q45G 88607 25 PE BAG FOR BASE Q45G 88609 94 EPE BAG FOR MONITOR...
  • Page 55 19" LCD Color Monitor ASUS VW198S Q52G6019 24 TAPE-FIX FOR ASUS Q52G6020 66 PROTECT FILM FOR VW198 045G 76 28 RN PE BAG FOR MANUAL E089D 089G 17356G553 AUDIO CABLE 1800MM 32F2818011 Q41G780068037B Q70G9002680 2A CD MANUAL 040G 457834 4A GP...
  • Page 56: Different Parts List

    19" LCD Color Monitor ASUS VW198S 12. Different Parts List Diversity of T97MMGNBPWUEAN Compared with T97MMGNBPWUSAN Location Part No. Description E089C 089G410A18N IS POWER CORD WALL-OUT FOR UK 32E1818020 Diversity of T97MMGNTPWUSAZ Compared with T97MMGNBPWUSAN Location Part No. Description E08901...

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