Download
Share
Print this page
  1. Manuals
  2. Brands
  3. Acer Manuals
  4. Monitor
  5. WISTRON RB23WABAS
  6. Service manual

Acer WISTRON RB23WABAS Service Manual

Dbg dpbu ii service
Hide thumbs

Advertisement

Quick Links

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-----------------------------------------------------------14
05.
Troubleshooting----------------------------------------------------------------------------------------23
06. Firmware Upgrade Procedure------------------------------------------------------------------------35
07. Writing EDID Procedure-------------------------------------------------------------------------------37
08. Block Diagram and schematic----------------------------------------------------------------------- 40
Appendix I : User s Manual
Appendix II
User's QSG
Appendix III :Spare Parts List
Appendix IV: 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
------------------------------------------------------------------------------------- 12
'
Safety Notice
Printed in Taiwan ©
26th-Nov.-2008
ACER_LCD_H233H_SM081126V1
high voltage.
All rights reserved
Model ID:RB23WABAS
Subject to modification

Advertisement

loading

Related Manuals for Acer WISTRON RB23WABAS

Summary of Contents for Acer WISTRON RB23WABAS

  • Page 1: Table Of Contents

    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 03. Exploded Diagram ------------------------------------------------------------------------------------- 12 04. Assembly and Disassembly Procedures-----------------------------------------------------------14 Troubleshooting----------------------------------------------------------------------------------------23 06. Firmware Upgrade Procedure------------------------------------------------------------------------35 07. Writing EDID Procedure-------------------------------------------------------------------------------37 08.

  • 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 H233H Go to cover page...

  • Page 3: Product Specification

    ACER H233H Go to cover page This model combine with three platform. See below explanation. 1.Scaler IC:RTD2482D used in VGA ,DVI and HDMI port Using simply word to define it(1A1D1H) 2.Scaler IC:RTD2482 used in VGA and HDMI port. Using simply word to define it(1A1D) Scaler IC:RTD2482RD used in VGA ,DVI and HDMI port .Using simply word to define it.(1A1D1H+OD)
  • Page 4 Minimum Range Note 1) Note 1) 75? to Ground 1.3.2.6 Abnormal Signal Immunity ACER H233H Go to cover page This analog video signal termination shall be 75 1% which shall be resistive with a negligible reactive component. The Horizontal Sync (HS) TTL signal is used to initiate the display of a horizontal line.
  • Page 5 ACER H233H Go to cover page 1.3.3 User Controls and Indicators 1.3.3.1 Power On / Off Switch The monitor shall have a power control switch visible and accessible on the front of the monitor . The switch shall be marked with icons per IEC 417 , # 5007 and # 5009.The switch shall interrupt the...
  • Page 6 33.75 74.25 1125 67.5 148.5 ACER H233H Go to cover page The controller supplied with the monitor shall control all panel timing. This controller shall adequately insulate the monitor from the computer, so that no possible combination of input signals...
  • Page 7 ACER H233H 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 (HDMI 256-byte)EDID file as specified by VESA EDID standard. The monitor...
  • Page 8 Therefore, if there are two spots, 1.30mm and 0.4mm in diameter, they must be at least 15mm apart. 1.5 Optical Characteristics Depends on the LCD supplier's spec. Details refer to QA Inspection Spec. ACER H233H Go to cover page Acceptable Number Minimum Separation Non countable...

  • Page 9: Osd Menu

    ACER H233H Go to cover page 2.1 MAIN OSD MENU a. Display OSD menu when user press “MENU” button on front bezel b. Layout as following figure 1-1 d. The definition of size and color for main menu Figure 1-2 color & size definition for function Icons...
  • Page 10 “e” button on the front bezel or trigger this function in OSD menu/picture page. b. Layout as following figure 1-8 2. OSD Manu (continued) c. The definition of color & size for the acer eColor management Function description Power off the monitor Moving the focus up...
  • Page 11 ACER H233H Go to cover page Volume management OSD a. Display volume management OSD, when user press “<” or “>” button on front bezel. b. Layout as following figure 1-10, key operation at items page (No item selected) Menu Auto input c.
  • Page 12 2. OSD Manu (continued) ACER H233H Go to cover page...

  • Page 13: Exploded Diagram

    ACER H233H 3. Exploded Diagram Go to cover page 3.1 Packing Exploded Diagram...
  • Page 14 ACER H233H 3. Exploded Diagram (continued) Go to cover page 3.2 Product Exploded Diagram...

  • Page 15: Assembly And Disassembly Procedures

    ACER H233H Go to cover page 4.1 Assembly procedures: Connect the cable between power board(P802) and interface board (P301) Connect the cable between power board(P003) and interface board(P308) Connect the USB board cable(P301) into interface board(P805) Connect speak cable into interface board(P001)
  • Page 16 Use a Phillips-head screwdriver screw 3 screws (No1~2 Screw Size=M3x10;No3 screw size=M3*6 Torque=4~6KGFxCM). Stick the safety tape Connect OSD key cable into interface board(P306) Use a Phillips-head screwdriver screwed the No.1~2(No1~2 screw size=M3x6; Torque=9~10 KGFxCM). Connect the USB cable. ACER H233H Go to cover page...
  • Page 17 ACER H233H Go to cover page Use a Phillips-head screwdriver screwed the No.1(No1screw size=M3x4; Torque=5+/-1 KGFxCM). Connect the power key cable. Connect the power key board from front bezel, Use a Phillips-head screwdriver screwed the No.1~2 screws(No1~2 screw size=M2x3.3; Torque=1~1.5 KGFxCM).
  • Page 18 Stick POP label on the correct position the same as below photo Take a LDPE+EPE bag to cover the LCD monitor. Take two cushion foams; one is held the top side of LCD monitor, and another is held the bottom side. ACER H233H Go to cover page...
  • Page 19 ACER H233H Go to cover page Put accessories of stand, DVI cable, and user’s manual ,power cable on specific positions as photo below. Move previous assembled parts into the carton then stick Vista and feature label on the carton then packing the carton...
  • Page 20 (Note: It depends on whether users returning the accessories.) Take off two cushion foams 4. Assembly and Disassembly Procedures (continued) ACER H233H 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 21 ACER H233H Go to cover page Put the dissembled monitor closed to by myself RIGHT SIDE LEFT SIDE Turn over the LCD monitor (screen faced up). edge your finger between the front bezel and the panel, then pry up on the front bezel to disengage the locking mechanism.
  • Page 22 DVI and D-SUB connectors (No1~4Hex Nut screws Size=M3x8;Torque=4~6KGFxCM). Use a Phillips-head screwdriver unscrewed the No.1~3 screws to release the power connector and HDMI connector. (No1~2 screw size=M3x10; No 3 screw size=M3x6 Torque=4~6 KGFxCM). ACER H233H Go to cover page...
  • Page 23 ACER H233H 4. Assembly and Disassembly Procedures (continued) Go to cover page Use a Phillips-head screwdriver unscrewed the No.1~4 screws (No1~4 screw size=M3x5; Torque=2.5~3 KGFxCM). Disconnect the lamps cable Take out lamp cables right through the No.1-2 square holes and separate the bracket chassis module and LCD panel apart.

  • Page 24: Troubleshooting

    5. Troubleshooting ACER H233H Go to cover page 5.1 No display of screen Screen is black color of LED is amber Does OSM display when you push “MENU key. Proceed "No OSM display" section. When a signal isn't being inputted, it is indicated with "No Signal Input".
  • Page 25 ACER H233H Go to cover page 5.2 Nothing display on screen (screen is black, color of LED is blue) Is backlight lit? Does computer output RGB video signals? Check OSM menu is display on screen when you push the "MENU" key.
  • Page 26 Failure Point I308 is failure Failure Point 1) Printed wire broke between P307 and I308 LVDS signals. 2) I308 is failure. ACER H233H Go to cover page circuit" section. circuit" section. Failure Point 1) Printed wire broke between P309 pin 1...
  • Page 27 ACER H233H 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 P301 pin 2 at TTL high level. Check the BKLT_ADJ signal of the input...
  • Page 28 1) Printed wire broke between P302 pin1 and I308 pin30. 2) Video cable is failure. 3) FB315,FB306,R327,C315 is open. 4) R326,C329 is short or open. from I308? Failure Point Printed wire broke between I308 and P307. ACER H233H Go to cover page...
  • Page 29 ACER H233H Go to cover page 5.5 Abnormal screen (For DVI and the same for HDMI) Check the DVI video signal from computer input Check the DVI input video signals on I308 pin 12,13,14,15,16,17,18,19 respectively that differential input voltage is 150 to 1200mV, and input commond mode voltage is 3.3V.
  • Page 30 Failure Point 1) Printed wire broke among P306 pin4, R368 and I308 pin51 2) Printed wire broke among P306 pin5 ,R362 and I308 pin50 3) C393, C394 is short. 4) D352, D353 is short ACER H233H Go to cover page...
  • Page 31 ACER H233H 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 pin 9 that is power DC 5 V. Check the signal on P302 pin12, 15 that is serial data...
  • Page 32 The host machine is not communicatiog in DDC2B mode. Failure Point The Video cable is failure. Failure Point 1) Printed wire broke between P303 pin 14 and pin 16. Failure Point The Video cable is failure. Failure Point I308 is failure. ACER H233H Go to cover page...
  • Page 33 ACER H233H Go to cover page 5.9 Checking the interface circuit of sync signal 5.9.1 Checking the control circuit of horizontal sync pulse Check the horizontal sync signal on P302 pin13 TTL Check the horizontal sync signal on I308 pin 22 TTL Failure Point Proceed "Checking the resolution change IC movement"...
  • Page 34 4) X301 failure. Failure Point 1) Printed wire broke between I308 pin 115, 116, 117,118 and I309 pin 1,2, 5,6. 2) I309 is failure. ACER H233H Go to cover page Failure Point 1) Printer wire broke between I308 pin 125 and R437...
  • Page 35 ACER H233H Go to cover page 5.11 Checking the DC/DC converter circuit Check the 5V is output from P301 pin 4,5,6. Check the 5V is input to I304 pin3. Check the 3.3V is output from I304 pin2, 4. Check the 3.3V is input to I305 pin3.
  • Page 36 PC device management or reconnect the USB cable again. Step-3Select ISP type: Serial Flash Select ISP icon. ” Step-4 Follow up the red square indication Select P-flash and Auto ACER H233H Go to cover page...
  • Page 37 ACER H233H 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 “H233H_EMEA.H00.hex” and “H233H_EMEA.H01.hex” will be loaded in “64~96” automatically. Step-6Press button The screen will show “PASS”...
  • Page 38 Double click “ Acer_1A1D_RLT.EXE “ PARALLEL CONNECTION S2 Select Model: Key in password”cedid” then select model which one you want to write EDID code that it depends on panel type. ACER H233H Go to cover page cedid SS:MEANS SAMSUNG PANEL...

  • Page 39: Writing Edid Procedure

    ACER H233H Go to cover page S3 Choose "WRITE" from menu then select "Scan S/N And Write EDID And Test DDC” S4 Key in series number in the input column and input 2 column Press write button after key in S/N...
  • Page 40 S1 Choose the folder “X233H-H233H-1A1H” Double click “ Acer_1A1H_RLT “ The writing process same as writing VGA and DVI process. S5 When EDID was written successfully that will show below message on the screen ACER H233H Go to cover page 1A1H...

This manual is also suitable for:

H233h