Gebruiksaanwijzing /service van het product RB23WABAS van de fabrikant Acer
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T able of Contents Important Safety Notice------------------------------------------------------------------------------------- 01 01. Product Specification--------------------------------------------------------------------------------- 02 02.
Product Announcement: This product is certificated to meet RoHS Directive and Lead-Free produced definition. Using approved critical components only is recommended when the situation to replace defective parts. V ender assumes no liability express or implied, arising out of any unauthorized modification of design or replacing non-RoHS parts.
1. Product Specification The LCD monitor consists of an interface board, a power board and inverter board, a function key board. The interface board will house the flat panel control logic , brightnes.
1. Product Specification (continued) 1.3.1.3 Audio Jack (option) This jack shall connect the audio input from host computer. 1.3.2 Video Input Signals D- S U B P i n Des c r i p t i o n Pi n N ame D e scr i pt i on 1 Red -V i d eo Red vi d eo si gn al i nput .
1. Product Specification (continued) 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.
1. Product Specification (continued) PRESET PC TIMINGS (ANALOG AND DIGITAL INPUTS) Analog input (VGA) treats all timings as PC-timings. 1.3.5.3 Panel Timing and Interface The controller supplied with the monitor shall control all panel timing.
1. Product Specification (continued) 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.
1. Product Specification (continued) 1.4.5.4 Allowable Defects No cosmetic defects are allowed except those specified below. The conditions of visual inspections are as follows : For 23 series Viewing distance is to be approximately 35-50cm Ambient illumination is to be 300 to 700 lux.
2.1 MAIN OSD MENU a. Display OSD menu when user press “MENU” button on front bezel b. Layout as following figure 1-1 2 OSD Menu d. The definition of size and color for main menu Figure 1-2 color &.
f. Item page status Status Display type Non-focus Item focused Item selected The description for control function Key Function description Power Power off the monitor <M o v i n g t h e f o c u s u p >M o v i n g t h e f o c u s d o w n Menu Enter to the item page 1.
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) Key Function description Menu Auto e input Close volume OSD < V olume down >V o l u m e u p c.
2. OSD Manu (continued) 11 Go to cover page ACER H233H.
3.1 Packing Exploded Diagram 3. Exploded Diagram 12 Go to cover page ACER H233H.
3.2 Product Exploded Diagram 3. Exploded Diagram (continued) 13 Go to cover page ACER H233H.
Use a Phillips-head screwdriver screwed the No.1~2 screws till that interface board and bracket chassis base firmly attached. (No1~2 screw size=M3x6; T orque=9~10KGFxCM). Use a Phillips-head screwdriver screwed the No.1~4 screws till that power board and bracket chassis base firmly attached.
Plug 2 lamp cables to the connectors of inverter board. Use a Hex-head screwdriver screwed the DVI and D-SUB connectors (No.1~4 Hex Nut screws Size=M3x8;T orque=4~6KGFxCM). Use a Phillips-head screwdriver screw 4 screws (No1~4 Screw Size=M3x6; T orque=2.
Use a Phillips-head screwdriver screwed the No.1(No1screw size=M3x4; T orque=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; T orque=1~1.
Assemble the stand upper side to the rear cover through the way of screwing 4 screws till both units firmly attached. (No1~4 Screw Size=M4x10; T orque=12+/- KGFxCM). 1 2 3 4 Stick POP label on the correct position the same as below photo T ake a LDPE+EPE bag to cover the LCD monitor .
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 S27 S26 4.
4. Assembly and Disassembly Procedures (continued) Use a Phillips-head screwdriver unscrew 4 screws to release the stand base. (No1~4 Screw Size=M4x10; T orque=12 KGFxCM). ±1 Disassemble the stand cover . P ut returned unit on a protective cushion,then remove LDPE+EPE bag.
Put the dissembled monitor closed to by myself W edge your finger between the front bezel and the panel, then pry up on the front bezel to disengage the locking mechanism. Note: The dissemble method of front bezel is as the below photos description, although the photos from S9 to S13 are not suitable for this model.
Use a Hex-head screwdriver unscrewed 4 screws to release the DVI and D-SUB connectors (No1~4Hex Nut screws Size=M3x8;T orque=4~6KGFxCM). Hold one side of down side that had been separated from front bezel Use properly force to pull up front bezel Unhook the power key board from front bezel, disconnect the power key cable.
Use a Phillips-head screwdriver unscrewed the No.1~4 screws to disassemble the power board. (No 1~3 screw size=M3x6; No 4 screw size=M4x8; T orque=9~10KGFxCM). Disconnect all of the cable Use a Phillips-head screwdriver unscrewed the No.1~2 screws to release the interface board.
Does OSM display when you push “MENU key. Yes No Proceed "No OSM display" section. Check if the sync signal from computer is output and if the video cable is connected normally. OK Proceed "checking the resolution change IC movement" section.
Is backlight lit? Refer "Checki ng the backlight uni t" section" OK NG Does computer output RGB video signals? OK Check OSM menu is displ ay on screen when you push the "MENU" key. Proceed "Abnormal s reen" dection " OK NG Check the video cable for failure .
5.2 Nothing display on screen (screen is black, color of LED is blue)continued Continue Check the 5V power supply f or P301 pin 4,5, 6. OK Check the I304 pi n2 if voltag e is 3.3V OK NG Check if the voltage between I301 pin2 and pin3 is above -0.7V OK Failu re Point I301 is failu re.
Is +22V supplied to invert er PWB ? (by the power board) OK NG Failure Point 1) Power board of Inverter part failure . Check the BKLT_EN signal of the DC input P301 pin 2 at TTL high level. OK NG Failure Point 1) printed wire broke between P 301 pin2, R304 and I308 pin 101.
Check the R, G, B video signal from computer input on P302 of D-sub connector. OK NG Failure Point 1) No R, G, B video signals output from host computer, check computer. 2) Video signal cable disconnection . Check the R, G, B input video signals on I308 pin25, 27, 30 respectively that their level is 0.
Check the DVI video signal from computer input on P303 of DVI connector. OK NG Failure Point 1) No DVI video signals output from host computer, check computer .
Check the input I2C signal whether is changed when pressed function keys on the P306 pin 4, 5 OK NG Failure Point 1) Function key wire disconnection . 2) Function key wire i s failure . 3) Function key board is failure. Check the input I2C signal of I308 pin 50, 51 whether is changed when pressed function keys .
Confirm the host computer supplies DDC 2B mode. OK NG Failure Point The host machine is not communicatiog in DDC2B mode. OK Check the output signal of serial data / clock on I308 pin 59, 58. OK NG Failure Point I308 is failure. Check the voltage on P302 pin 9 that is power DC 5 V.
Confirm the host computersupplies DDC2B mode. OK NG Failure Point The host machine is not communicatiog in DDC 2B mode. OK Check the output signal of serial data / clock on I308 pin 122,121 OK NG Failure Point I308 is failure. Check the voltage on P303 pin14 that is power DC 5 V.
5.9.2 Checking the control circuit of vertical sync pulse Check the horizontal sync signal on P302 pin13 TTL level. OK NG Failure Point Video cable is failure. Check the horizontal sync signal on I308 pin 22 TTL level. OK NG Failure Point 1) Printed wire broke between P302 pin13 and I308 pin22.
Check +3.3V supply on I304 pin2. OK NG Proceed " Checking the DC/DC converter circuit " section . Check +1.2V supply on I305 pin 2. OK NG Proceed " Checking the DC/DC converter circuit " section . Check X301 27MHz clock input to I308 pin 127 and 128 at TTL level .
Check the 5V is output from P301 pin 4,5,6. OK NG Failure Point 1) Power wire disconnection. 2) Power board is failu re. Check the 5V is input to I304 pin3. OK NG Failure Point 1) Printed wire broke betwe en P 301 pin 4,5,6 and I304 pin3. Check the 3.
6.2 Realtek F/W Configuration: Step-1 Launch the utility of “ ” DebugT ool_V6.2.exe Step-3Select ISP type: Serial Flash Select ISP icon. Step-4 Follow up the red square indication Select P-flash a.
Step-6Press button The screen will show “P ASS” Step-5 Select “64K” icon to load firmware image. There are two HEX files. Y ou only need to select “64K” to choose “H233H_EMEA.H00.hex” and “H233H_EMEA.H01.hex” will be loaded in “64~96” automatically .
cedid Writing EDID for VGA and DVI S1 Chose the folder:” X233H-H233H-VGA&DVI “ Double click “ Acer_1A1D_RLT.EXE “ S2 Select Model: Key in password”cedid” then select model which one you want to write EDID code that it depends on panel type.
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 S5 Wh.
S5 When EDID was written successfully that will show below message on the screen 1A1H Hardware Configuration: 1. Connect the PRINTER PLUG of DDC FIXTURE with the printer port of Desktop PC.
8. 8.1 BLOCK DIAGRAM BLOCK DIAGRAM AND SCHEMATIC PCB No. Scal er Flash ROM SST 25VF010A PMC 25LV010A DC DC - 5V 3 3V -. 33 V 12 V .- . Power & Invertor Board AC 110 220V / Input LVDS I308 I309 +5V I304 I305 & Brightness Inv On Off ,_ / P307 Audio EN VOLUME MUTE ,, Backl i ght Panel Con.
_ 8.2 SCHEMA TICS POWER BOARD ACER_LCD_H233H_ PCB No. 6832209800P01 B GND AIN R _ AOUT L _ GND AOUT R _ AIN L _ GND DN MUTE SOP 18 - EN ON OFF - BRI On OFF - L + L - + 5V R - BRI + 5V R + GND GND GND .
8.3 ACER _ _LCD_H233H SCHEMA TICS_INTERF ACE_BD_POWER 6832203800P01 PCB No. +5V GND TO263 TO252 GND BKLT ADJ _ STANDBY BKLT EN _ AUDIO EN _ MUTE VOLUME +5V +5V GND for USB model add R478 AUDIO EN _ BA.
_ 8.4 SCHEMA TICS INTERF ACE_BD_VGA & DDC INPUT ACER_LCD_H233H_ PCB No. 6832203800P01 VGA RED _- VGA BLU _- VGA GRN _- VGA RED _ VGA GREEN _ VGA BLUE _ VGA RED _- DDC SCL VGA __ DDC SCL VGA __ DDC.
_ 8.5 INTERF ACE_DVI & DDC INTERF ACE ACER_LCD_H233H SCHEMA TICS_ PCB No. 6832203800P01 DVI RX2 _- DVI RX0 _- DVI RXC _- DVI RX1 _+ DVI RXC _+ DVI RX1 _- DVI RX2 _+ DVI RX0 _+ DVI DETn _ DVI SDA _.
_ 8.6 INTERF ACE_BD_HDMI ACER_LCD_H233H SCHEMA TICS_ PCB No. 6832203800P01 HDMI1 D0 _+ HDMI1 CK _- HDMI1 D0 _+ HDMI1 D0 _- HDMI1 D1 _- HDMI1 D1 _+ HDMI1 CK _- HDMI1 D2 _- HDMI SDA _ HDMI SCL _ HDMI SC.
_ 8.7 INTERF ACE_BD_SCALER/RTD2482D ACER_LCD_H233H SCHEMA TICS_ PCB No. 6832203800P01 Shielding Audio output PC Audio input - EAR EAL GND INR GND INL 1A1D1H use R493 1A1H use R495 AUDIO use R494 NON A.
POWER ORANGE SDA GND SCL KEY Vin GND ATTN KEY2 KEY1 FOR H233 POWER KEY 4PIN and X233 KEY 6PIN GND FOR H233 OSD KEY 6PIN BLUE POWER ORANGE GND KEY2 BLUE KEY1 FOR V273 KEY 6PIN LVB0M LVB0P LVB3M LVBCKP .
_ 8.9 SCHEMA TICS _BD OSD KEY ACER_LCD_H233H _ PCB No. 6832203800P01 AUTO LEFT AUTO RIGHT MENU RIGHT GPIO LED / LEFT BUTTON E BUTTON S2 INPUT INPUT E MENU GPIO5 D608 / ATTN GND KEY Vin SCL GND SDA 2 When connecting the LEDs to GPIO pins the pin17 should .
LED ORANGE _ LED WHITE _ POWER KEY LED BLUE _ KEY POWERn _ LED ORANGE _ C601 0 1uF 16V ._ CM0603 D604 MMSZ5232BS SOD323 S601 SM TACK SW2 -- 1 2 3 4 O B D601 LED SM LED C195K -- 1 2 3 4 D602 MMSZ5232BS.
8.1 1 ACER_LCD_H233H LA YOUTS_POWER BOARD _ POWER BOARD - BOTTOM SILK POWER BOARD - TOP SILK 12 34 56 7 8 9 1 0 1 1 1 2 1 3 12 34 56 7 8 9 1 0 1 1 1 2 1 3 A B C D E F G A B C D E F G Go to cover page .
8.12 ACER_LCD_H233H LA YOUTS_INTERF ACE BOARD _ 12 34 56 7 8 9 1 0 1 1 1 2 1 3 12 34 56 7 8 9 1 0 1 1 1 2 1 3 A B C D E F G A B C D E F G Go to cover page 51 ACER H233H.
8.13 ACER_LCD_H233H LA YOUTS_OSD KEY BOARD AND POWER KEY BOARD _ POWER KEY BOARD OSD KEY BOARD 12 34 56 7 8 9 1 0 1 1 1 2 1 3 12 34 56 7 8 9 1 0 1 1 1 2 1 3 A B C D E F G A B C D E F G Go to cover pag.
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