Acer RA19WAANU Service Manual
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Acer RA19WAANU Service Manual

Acer RA19WAANU Service Manual

Dbg dpbu ii service
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ACER
DBG DPBU II
DBG DPBU II
Service
Service Manual

Table of Contents

Important Safety Notice------------------------------------------------------------------------------------- 01
01. Product Specification--------------------------------------------------------------------------------- 02
02. OSD Menu-----------------------------------------------------------------------------------------------08
04. Assembly and Disassembly Procedures-----------------------------------------------------------12
05.
Troubleshooting----------------------------------------------------------------------------------------19
06. Firmware Upgrade Procedure------------------------------------------------------------------------31
07. Writing EDID Procedure-------------------------------------------------------------------------------33
08. Block Diagram------------------------------------------------------------------------------------------ 35
Appendix I : User s Manual
Appendix II : Spare Parts List
Appendix III: Software Pack
Any person attempting to service this chassis must familarize with the chassis and be
aware of the necessary safety precautions to be used when serving electronic equipment containing
Published by Wistron Corporation
------------------------------------------------------------------------------------- 10
'
Printed in Taiwan ©
04th-Sept.-2008
ACER_LCD_X193HQ_SM080904V1
Safety Notice
high voltage.
All rights reserved
Model ID:RA19WAANU
Subject to modification

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  • Page 1: Table Of Contents

    Any person attempting to service this chassis must familarize with the chassis and be aware of the necessary safety precautions to be used when serving electronic equipment containing Published by Wistron Corporation ACER_LCD_X193HQ_SM080904V1 Model ID:RA19WAANU Safety Notice high voltage. Printed in Taiwan ©...

  • Page 2: Important Safety Notice

    Important Safety Notice Using Lead-Free solder to well mounted the parts. ! The fusion point of Lead-Free solder requested in the degree of 220 C. ° ACER X193HQ Go to cover page...

  • Page 3: Product Specification

    ACER X193HQ Go to cover page 1.1 SCOPE This document defines the design and performance requirements for a 19W inch diagonal , flat panel monitor .The display element shall be a WXGA(1366X768) resolution TFT-LCD (Thin Film Transistor Liquid Crystal Display).16.7M color images are displayed on the panel.Video input signals are analog RGB (0.7Vp-p).
  • Page 4 0.3 volt lower than the level at which it actually detects a logic 1.If the monitor sync processing circuits are designed around the 3.3 volt logic family ,then the sync inputs must be 5 volt tolerant . ACER X193HQ Go to cover page Item Min Normal...
  • Page 5 ACER X193HQ Go to cover page 1.3.2.5 Sync Signal Loading TTL input loading shall be equivalent to one TTL input load. When logic 0 is asserted by a sync input , the maximum current source from any single monitor sync input to the driver is 1.6 mA .When logic 1 is asserted , the maximum current...
  • Page 6 Inrush Current Hot Start Cycl e Under Voltage Line Transient ACER X193HQ Go to cover page The monitor shall contain provisions to “stretch” the video signal, so that an input signal from the computer in any resolution smaller than 1366 x 768 is automatically expanded to fill the entire screen.
  • Page 7 ACER X193HQ Go to cover page 1.3.8 Display Communications Channel The monitor assembly shall provide a display communications channel that conforms to VESA DDC2Bi hardware requirements. This configuration shall contain the 128-byte EDID file as specified by VESA EDID standard.The monitor should not write to...
  • Page 8 ( c o n t r a s t ) w h e n Minimum Separation N / A 15 mm 15 mm 15 mm 25.4 mm 25.4 mm Not applicable ACER X193HQ Go to cover page...

  • Page 9: Osd Menu

    ACER X193HQ Go to cover page 2.1 MAIN OSD MENU Outline: The description for control function: The description for control function: M a in S u b S u b M e n u M e n u M e n u...
  • Page 10 2. OSD Manu (continued) ACER X193HQ Go to cover page...

  • Page 11: Exploded Diagram

    ACER X193HQ 3. Exploded Diagram Go to cover page 3.1 Packing Exploded Diagram...
  • Page 12 ACER X193HQ 3. Exploded Diagram (continued) Go to cover page 3.2 Product Exploded Diagram...

  • Page 13: Assembly And Disassembly Procedures

    ACER X193HQ Go to cover page 4.1 Assembly procedures: Connect the cable between power board(P802) and interface board (P301) Connect the function key cable into interface board(P304) Connect the FFC cable into interface board P802 P304 P301 Use a Phillips-head screwdriver screwed the No.1~4 screws till that power board and bracket...
  • Page 14 Take a key function board to hook with front bezeland connect to key function cable. screwdriver KGFxCM). ACER X193HQ Go to cover page Put a ear over n he ssembled nit nd ress on force echanisms ocked nd irmly attached Use a Phillips-head screwdriver screw 1 screw (No1 Screw Size=M4x10;...
  • Page 15 ACER X193HQ Go to cover page Stick a screen card on the front bezel with two tapes. Stick Vista and TC003 label on the correct position the same as below photo Take a LDPE+EPE bag to cover the LCD monitor.
  • Page 16 D-SUB CABLE USER’S MANUAL Take off two cushion foams 4. Assembly and Disassembly Procedures (continued) DVI CABLE ACER X193HQ Go to cover page ut returned unit on a protective cushion,then remove LDPE+EPE bag. Tear off tapes to remove the screen protector...
  • Page 17 ACER X193HQ Go to cover page Put the dissembled monitor closed to by myself RIGHT SIDE LEFT SIDE edge your finger between the front bezel and the panel, then pry up on the front bezel to disengage the locking mechanism.
  • Page 18 Use a Hex-head screwdriver unscrewed 4 screws to release the DVI and D-SUB connectors (No1~4Hex Nut screws Size=M3x8;Torque=4.5~6.5KGFxCM). 4. Assembly and Disassembly Procedures (continued) ACER X193HQ Go to cover page Unplug 2 lamp cables Disconnect the FFC cable to the connector of panel.
  • Page 19 ACER X193HQ 4. Assembly and Disassembly Procedures (continued) Go to cover page Examine the panel surface accoring to inspection criteria. Put it aside. Use a Phillips-head screwdriver unscrewed the No.1~2 screws to release the interface board. (No1~2 screw size=M3x6; Torque=9~10KGFxCM).

  • Page 20: Troubleshooting

    Check if the sync signal from computer is output and if the video cable is connected normally. Proceed "checking the resolution change IC movement" section. ACER X193HQ Go to cover page Proceed "No OSM display" section. Input the sync signal of computer, or change the cable.
  • Page 21 ACER X193HQ Go to cover page 5.2 Nothing displays on the screen (Screen is black and colour of LED is blue.) Is backlight lit? Does computer output RGB video signals? Check OSM menu is display on screen when you push the "PROCEED" key.
  • Page 22 Failure Point I305 is failure Failure Point 1) Printed wire broke between P305 and I305 LVDS signals. 2) I305 is failure. ACER X193HQ Go to cover page circuit" section. circuit" section. Failure Point 1) Printer wire between R411 and I305 pin10 is failure 2) I305 is failure.
  • Page 23 ACER X193HQ Go to cover page 5.3 Checking the back light unit Is +22V supplied to inverter PWB ? (by the Check the BKLT_EN signal of the DC input Check the BKLT_ADJ signal of the input Failure Point 1) Back light unit of LCD module is failure.
  • Page 24 I305 pin16. 2) Video cable is failure. 3) FB302,FB306,R327 is open. 4) R326 is short or open. 5) C315 is short or open. from I305? Failure Point Printed wire broke between I305 and P305. ACER X193HQ Go to cover page...
  • Page 25 ACER X193HQ Go to cover page 5.5 Abnormal screen (For the DVI) Check the DVI video signal from computer input on P303 of DVI-I video connector. Check the DVI input video signals on I305 pin 2,3,4,5,6,7,47,48 respectively that differential input voltage is 150 to 1200mV, and input Check all LVDS signals being output to P305 Prpcess "Checking the resolution change IC...
  • Page 26 1) Printed wire broke among P304 pin3,R350 and I305 pin21 2) Printed wire broke among P304 pin5 ,R349 and I305 pin20 3) C358,C359 is short. 4) R374, R375 is short or open. 5) D327,D328 is short ACER X193HQ Go to cover page...

  • Page 27: Abnormal Plug And Play Operation For Vga

    ACER X193HQ Go to cover page 5.7 Abnormal plug and play operation for VGA Confirm the host computer supplies DDC2B mode. Check the voltage on P302 pin9 that is power DC 5 V. Check the voltage on Q307 pin1 that is power DC...
  • Page 28 1) Printed wire broke between VR307 pin3,D325 and P303 pin14 2) R361,R372,R363 is short or open. 3) D325,Q307,I304 is failure. Failure Point The Video cable is failure. pin 2.3 Failure Point I305 is failure. ACER X193HQ Go to cover page...
  • Page 29 ACER X193HQ Go to cover page 5.9 Checking the interface circuit of sync signal 5.9.1 Checking the control circuit of horizontal sync pluse Check the horizontal sync signal on P302 pin13 TTL Check the horizontal sync signal on I308 pin9 TTL Failure Point Process "Checking the resolution change IC movement"...
  • Page 30 1) Printed wire broke between I305 pin 38, 39, 40 and I303 pin 5, 6,7. 2) R351,R352,R353 is open. 3) R395,R396,R397 is open or short. 4) I303 is failure. ACER X193HQ Go to cover page Failure Point 1) Printer wire broke between I305 pin 4 and C345 2) C345 is short.
  • Page 31 ACER X193HQ Go to cover page 5.11 Checking the DC/DC converter circuit Check the 5V is output from P301 pin 5,6 Check the 3.3V is output from I301 pin2, 4. Check the 3.3V is input to I309 pin3. Check the 1.8V is output from I309 pin2,4.

  • Page 32: Firmware Upgrade Procedure

    .you should confirm your USB device whether be detected by your PC device management or reconnect the USB cable again. Step-3Select ISP icon. ” Step-4 Follow up the red square indication Select “both”,”Checksum”,”Auto”,”Page Erase”, Select “21” for Extend size. ACER X193HQ Go to cover page...
  • Page 33 ACER X193HQ Go to cover page Step-5 Select “64K” icon to load firmware image. There are two HEX files. You only need to select “64K” to choose “X203H_AAS_F001-EMEA.hex” and “X203H_AAS_F001-EMEA_Extend.hex” will be loaded in “64~96” automatically. Step-6Press button 6. Firmware Upgrade Process (continued) The screen will show “PASS”...

  • Page 34: Writing Edid Procedure

    2. Writing VGA/DVI Process Chose the folder:” X193H-X203H” it depends on which model you want to write. Acer-X193H-X203H be used in the monitor only has VGA port. Acer-X193H-X203H-digital signal be used in the monitor both have VGA and DVI port Select the “Acer-M1&M3-XPEDID-DVI-.exe”...
  • Page 35 ACER X193HQ Go to cover page 4. Choose "WRITE" from menu then select "Scan S/N And Write EDID And Test DDC” 5. Key in series number(22 characters) in the input column and below empty column. Press write button after key in S/N 6.

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