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Acer MB243WABNS manual

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Table of contents for the manual

  • Page 1

    T able of Contents Important Safety Notice------------------------------------------------------------------------------------- 01 01. Product Specification--------------------------------------------------------------------------------- 02 02. OSD Menu-----------------------------------------------------------------------------------------------08[...]

  • Page 2

    Product Anouncement: 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. Service[...]

  • Page 3

    1.1 SCOPE This document defines the design and performance requirements for a 24W inch diagonal , flat panel monitor .The display element shall be a WUXGA (1920x1200) resolution TFT-LCD (Thin Film Transistor Liquid Crystal Display).16.7M color(RGB Hi+FRC) images are displayed on the panel.Video input signals are analog RGB (0.7Vp-p). When the syste[...]

  • Page 4

    1. Product Specification (continued) 1.3.2 Video Input Signals 1.3.2.1 Video Signal Amplitudes The three video inputs consist of Red ,Green , and Blue signals, each with its own coaxial cable terminated at the monitor. These video signals are analog levels, where 0 V corresponds to black , and 700 mV is the maximum signal amplitude for the respecti[...]

  • Page 5

    1.3.2.6 Abnormal Signal Immunity The monitor shall not be damaged by improper sync timing , pulse duration , or absence of sync , or abnormal input signal amplitude ( video and/ or sync too large or too small) , or any other anomalous behavior of a graphics card video generator when changing modes , or when any combination of input signals is remov[...]

  • Page 6

    1.3.5 Controller Requirements 1.3.5.1 General Requirements The monitor shall include a controller capable of converting the analog RGB signal from a standard WUXGA resolution video controller in the CPU to a signal which can be displayed on the panel. The controller will include a PLL, A/D converters, LVDS transmitter and other circuitry necessary [...]

  • Page 7

    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 the EDID file for the first two minutes of operation following power-u[...]

  • Page 8

    1.4.5.5 Defect T erminology T able 3 gives the descriptive terms used in classifying defects. 1.5 Optical Characteristics Depends on the LCD supplier's spec. Details refer to QA Inspection Spec. 1.4.5.6 Smudges, Streaks and Smears When viewing the panel oriented so as to maximize reflected light , there shall be no visible smudging , streaking[...]

  • Page 9

    2.1 MAIN OSD MENU Outline: The description for control function: 2 OSD Menu Go to cover page 8 ACER G24[...]

  • Page 10

    2. OSD Manu (continued) 9 Go to cover page ACER G24[...]

  • Page 11

    3.1 Packing Exploded Diagram 3. Exploded Diagram 10 Go to cover page ACER G24[...]

  • Page 12

    3.2 Product Exploded Diagram 3. Exploded Diagram (continued) 11 Go to cover page ACER G24[...]

  • Page 13

    S4 S6 S5 S3 S2 S1 Use a Phillips-head screwdriver screwed the No.1~4 screws till that interface board and bracket chassis base firmly attached. (No1~4 screw size=M3x6; T orque=9~10KGFxCM). Use a Phillips-head screwdriver screwed the No.1~5 screws till that power board and bracket chassis base firmly attached.(No1~4 screw size=M3x6; No5 screw size=M[...]

  • Page 14

    Plug 6 lamp cables to the connectors of inverter board. T ake lamp cables out from the holes shown as the photo. T urn the monitor faced down and put it on the bracket chassis module till both parts firmly Connect FFC cable to LCD panel. There are two locks over here when plugging in should be noticed Connect the FFC cable to the connector of the L[...]

  • Page 15

    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=13 KGFxCM). 1 Put a ear over n he ssembled nit nd ress on force echanisms ocked nd irmly attached . rc o t a u a pm l a f T ake a key function board to hook with front bezeland connect to key functio[...]

  • Page 16

    Move previous assembled parts into the carton then stick Vista and feature label on the carton then packing the carton Put accessories of stand, DVI cable, and user’s manual ,power cable on specific positions as photo below. T ake two cushion foams; one is held the above side of LCD monitor , and another is held the below side. T ake a LDPE+EPE b[...]

  • Page 17

    Use a Phillips-head screwdriver unscrew 4 screws to release the stand base. (No1~4 Screw Size=M4x10; T orque=13 KGFxCM). ±1 Disassemble the stand cover . P ut returned unit on a protective cushion,then remove LDPE+EPE bag. T ear off tapes to remove the screen protector card then turn over the LCD monitor (screen faced down), T ake off two cushion [...]

  • Page 18

    Put the dissembled monitor closed to by myself Unhook the key function board from front bezel, disconnect the key function cable S8 S10 S9 4. Assembly and Disassembly Procedures (continued) S1 1 DOWN SIDE LEFT SIDE RIGHT SIDE UP SIDE W edge your finger between the front bezel and the panel, then pry up on the front bezel to disengage the locking me[...]

  • Page 19

    T ake out lamp cables right through the No.1-3 square holes and separate the bracket chassis module and LCD panel apart. Unplug 6 lamp cables Use a Phillips-head screwdriver unscrewed the No.1~4 screws to disassemble the LCD panel and bracket chassis module. (No1~4 screw size=M3x6; T orque=2.5 KGFxCM). Use a Hex-head screwdriver unscrewed 5 screws [...]

  • Page 20

    Use a Phillips-head screwdriver unscrewed the No.1~5 screws to disassemble the power board. (No 1~4 screw size=M3x6; No 5 screw size=M4x8; T orque=9~10KGFxCM). Disconnect all of the cable Use a Phillips-head screwdriver unscrewed the No.1~4 screws to release the interface board. (No1~4 screw size=M3x6; T orque=9~10KGFxCM). Disconnect the cable from[...]

  • Page 21

    5. T roubleshooting Does OSM displ ay upon pressing the “MENU” button ? Check if the sync signal output from connected computer and the video cable is connected pr operly Proceed to “5 .5 Abnormal OSM displ ay” section. Input the sync signal of computer, or change to a standard shipped cable for cross test. Proceed to “5.4 A bnormal Scree[...]

  • Page 22

    5. T roubleshooting (continued) 5.2 Nothing displays on the screen (Screen is black and colour of LED is blue.) Check if the backlight is slightly li ghtened from upper corners (right/l eft) of LCD panel Does RGB video signals output from connected PC host? Proceed to “5.3 Checki ng the backlight unit” sect ion 1. Change pattern of video signal[...]

  • Page 23

    5. T roubleshooting (continued) 5.3 Check the backlight unit Check the BKLT_EN signal of rectangle input P301 pin1 1 at TTL high level. Check the PWM signal supplied from I314 pin251 is a PWM, pulse-wi dth modulation. OK Does the I306 pin16 output a TTLvol tage level at “H” status ? <or> Is BKL T_EN signal of the rectangle being output? F[...]

  • Page 24

    5. T roubleshooting (continued) 5.4 Abnormal Screen: Check R.G.B video signal s output from PC host to D-Sub R.G.B connector Check the R.G.B signals on I314 pin40, pin42, and pin45 which should have voltage level at 0.7Vpp max. OK Failure Point 1. Check connected PC host if t here’s no R .G.B signals output. 2. Video signal cable di sconnected . [...]

  • Page 25

    5. T roubleshooting (continued) 5.5 Abnormal OSM display - OSD Adjusment Problem Check the input T TL level whether if it was al tered upon pressing the functi on keys. OK Failure Point 1. Print ed wire is broken betw een P303 pin 2 and I306 pin 87. 2. Print ed wire is broken betw een P303 pin 3 and I306 pin 88. 3. Print ed wire is broken betw een [...]

  • Page 26

    5. T roubleshooting (continued) 5.6 Abnormal Plug and Play Operation 5.6.1 Abnormal DDC2 (D-SUB) 5.6.2 Abnormal DDC2 (DVI) Confir m t he output of seri al data on I 312 pin6 synchr oni ze SC LK at TTL l ev el OK F a ilur e P oin t I 312 i s def ect ed NG F a ilur e P oin t 1. The host machi ne i sn’ t communicat i ng i n DD C2 mode. 2. The vi deo[...]

  • Page 27

    5. T roubleshooting (continued) 5.7 Checking the interface circuit of sync signal 5.7.1 Checking the control circuit of horizontal sync pulse 5.7.2 Checking the control circuit of vertical sync pulse Check the horizont al sync signal on I314 pin46 TTL level OK Failure Point 1. Video cable is def ected. 2. Printed wi re is broken between P30 4 pin13[...]

  • Page 28

    5.8 Checking the resolution change IC movement Is there +3.3V S u p p l i e do nI 3 1 4p i n 1 0 7 , pin48, pin61, pin250, pin12, pin70, pin170, pin184 , pin203, pin216, pin236, pin252 , pin20, pin28, pin38, pin19, pi n37, pin131? Is there +1.8V supplied on I314 pin16, pin22, pin50, pin2, pi n78, pin96, pin143 , pin160, pin181 , pin225 Proceed to ?[...]

  • Page 29

    5.9 Checking the DC/DC converter circuit Check if the 5V is output from P301 pi n1, pin2, pin3, pi n4 to I301, I303 , I320 pin3. Check if the 3.3V, 2.5V and 1.8V l ine voltage is output from I301, I302 , I303 pin2 OK Failure Po int P r i n t e dw i r ei sb r o k e nb e t w e e n P301 pin1, pin 2, pin3, pi n4 and I301, I303 , I320 pin3. NG NG OK Fai[...]

  • Page 30

    5.10 Checking the inverter board circuit Does 22V output pi n have vol t age around 20V? Does On/Off pin have vol tage over 3V? Does bri ght ness pi n have vol t age in t he range of 0V~3.2V? Does I101 pi n6 have 5V output ? Check F101, I101 , Q110, Q 111, Q112, Q113 and repai r them i f be damaged Check I101 and repai r them if be dam aged Check p[...]

  • Page 31

    Check the TMDS signal from computer input on HDMI connector Check the TMDS signal of I322 OK 1.Check the host PC to see if there’s no TMDS signal output 2.HDMI cabled disconnected . Reconnect the cable till firmly connected 3.P311 is disconnected. Reconnect the cable till firmly connected Failure Point NG I322 was damaged. Failure Point OK NG Fai[...]

  • Page 32

    Mstar ISP Utility Configuration: Launch the utility of “ISP_T ool Winbond 0315.exe” S2. Press [Connect] button. There s a Dialog window shown on the screen. It is the meaning of connection successful . Check the video cable and ISP board (D-sub to Printer port) between LCD monitor to PC host to see if it disconnected. Connect VGA cable between [...]

  • Page 33

    Press [Run] button and waiting for firmware upgrade completed .The screen will show “P ASS” 2 1 Press [Auto] button Press [Read] button. 1. Press Read folder to browse firmware image. 2.The position according to where the firmware be put Press [Device] button to select the WP pin pull to high during ISP “ “ Check firmware version Turn off t[...]

  • Page 34

    PRINTER PLUG DVI EXTENDING SOCKET USB A PLUG D-SUB PLUG DVI EXTENDING SOCKET USB A SOCKET 1 Writing EDID Procedure Hardware Configuration: 1.)Connect the PRINTER PLUG of DDC FIXTURE with the printer port of Desktop PC. (Refer to figure 1) 2.)Plug USB A PLUG of DDC FIXTURE to USB socket of Desktop PC (Refer to figure 2) 3.)Extend the DVI cable on DV[...]

  • Page 35

    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 Press write button after key in S/N 6. When EDID was written successfully that will show below message on the screen Writing HDMI Process Chose the folder:”Acer-HDMI” then double click Select[...]

  • Page 36

    8.Schematics and Layouts _ 8.1 SCHEMA TICS BLOCK DIAGRAM ACER_LCD_G24_ PCB No. Analog Video Input DSUB Scaler MST 9259D Function Key Board DDC 24LC02B DC DC - 5v 3 3v -. 33 v 18 v .- . Power Board AC 110 220v / Input LVDS I314 +5V P301 I320 I326 I312 P304 Brightness Inv On Off ,_ / P306 D SUB SCL __ D SUB SDA __ LCD Module Digital Video Input DVI D[...]

  • Page 37

    _ 8.2 SCHEMA TICS POWER BOARD ACER_LCD_G24_ PCB No. 6832194100P01 24V 24V GND GND 20 . GND TO INV ON OFF - 24V GND BRI 52 V . 5V RTN - 52 V . BRI 52 V . GND 52 V . 52 V . GND ON OFF - GND OFF 20 . CUT CUT CUT 24V 52 V . VDD FBPWM VBUS1 V AUX V AUX VDD 24V FBPWM VA VA 52 V . VBUS VBUS1 VBUS R845 510K R1206 + C839 1000U 25V / L801 280uH R827 27 K . R[...]

  • Page 38

    8.3 ACER _ _LCD_G24 SCHEMA TICS_INTERF ACE_BD_POWER 6832194600P0 PCB No. SOT 223 - TO 263 - TO 252 GOI -- TO 263 - HI POWER ON ==> SOT 223 - FOR POWER SAVING CONTROL AUDIO EN _ AUDIO DET _ +. 51 V BKLT EN _ +. 51 V +. 51 V GND BKLT ADJ _ GND GND 5V RTN _ OFF +. 51 V VCC LCD2 _ AUDIO DET _3 BKLT ADJ _6 LCD EN _ 3 AUDIO EN _3 BKLT EN _3 OFF 3 OFF [...]

  • Page 39

    _ 8.4 SCHEMA TICS INTERF ACE_BD_MCU AND FUNCTION KEY ACER_LCD_G24_ PCB No. LED B ACTIVE LOW _ LED A ACTIVE LOW _ PLUS MINUS SELECT POWER MENU GND A12 A13 A14 WE PSEN A1 A2 A3 A4 A5 A6 A7 MALE MALE PSEN LED A _ MSDA MSCL UP DOWN MENU SELECT ISP A14 A8 A3 A0 A7 A13 A2 A6 A12 A1 A18 A10 A15 A11 A16 A9 A17 A5 A4 WE MAD0 MAD1 MAD2 MAD3 MAD4 MAD5 MAD6 MA[...]

  • Page 40

    _ 8.5 INTERF ACE_BD_ ACER_LCD_G24 SCHEMA TICS_ VGA INPUT PCB No. DSUB Connector VGA RX _ VGA TX _ DDC WP _ +_ 5V VGA +_ 5V VGA BLUE GREEN RED DSUB SCL - DSUB SDA - VGA TX _ VGA RX _ HSYNC VSYNC DSUB SCL - DSUB SDA - WP EN _3 SOG 6 DSUB DET _3 BIN0P 6 BIN0M 6 GIN0P 6 GIN0M 6 RIN0P 6 RIN0M 6 VGA SCL _3 HSYNC0 6 VSYNC0 6 DDC WP _ 5 +3V3 GND GND GNDA G[...]

  • Page 41

    _ 8.6 INTERF ACE_BD_HDMI AND DVI INPUT ACER_LCD_G24 SCHEMA TICS_ PCB No. DVI HDMI SW 1 the voltage __ = , level must 3 3V 2V <= . & > 0 DVI INPUT 1 HDMI INPUT :, : DVI Connector P S GND GNDA must be connected .. , . HDMI RX2 _+ HDMI RX1 _- DDC WP _ DDC WP _ DDC SCL D __ HDMI RX1 _+ DVI RX2 _- DVI RX2 _+ HDMI RX0 _- DVI RX1 _- DVI RX1 _+ D[...]

  • Page 42

    _ 8.7 INTERF ACE_BD_SCALER ACER_LCD_G24 SCHEMA TICS_ PCB No. FPC FFC 30S 100C -- - LVA0P LVACKP LVA1P LVA2M AD0 MDATA20 WR AR8 MDATA18 MDATA19 MDATA7 MDATA14 DQS0 MDATA1 MDATA28 MDATA11 AD2 AR5 AR7 MDATA9 MDATA0 MDATA29 MDATA31 ALE AR0 AR11 DQS2 MDATA12 MDATA4 MDATA16 AR3 AR9 MDATA26 MDATA17 MDATA22 AR10 MDATA21 MDATA23 MDATA13 MDATA15 MDATA24 MDAT[...]

  • Page 43

    _ 8.8 SCHEMA TICS INTERF ACE_BD_SDRAM ACER_LCD_G24 _ PCB No. MDATA 22 _ MDATA 3 _ MDATA1 MDATA23 MDATA28 MDATA 19 _ DM1 DQS 1 _ MDATA20 MDATA16 MDATA6 MDATA4 MDATA24 MDATA17 MCLK- DM3 MDATA26 MDATA0 MDATA29 MDATA14 MDATA 11 _ MDATA7 MDATA27 MDATA3 MDATA 23 _ MDATA 1 _ MDATA 25 _ MDATA12 MDATA 31 _ MDATA 24 _ MDATA9 MDATA5 MDATA 14 _ MDATA 16 _ MDAT[...]

  • Page 44

    _ 8.9 SCHEMA TICS INTERF ACE_BD_USB AND CAM/MIC OUTPUT ACER_LCD_G24_ GND DD1M GND DD2M DD2P VBUS4 DP1 DN1 VBUS3 VBUS1 DD1P GND DIAG LOOP _ SOT 223 - USB2512 USB2514 USB2512 DP2 VBUS5 VBUS3 VBUS4 OVR2 VBUS2 DP5 OVR4 DP1 DP3 DN4 VBUS4 OVR5 DN2 DP4 DN3 VBUS2 VBUS5 DN5 VBUS3 OVR3 DP0 DN0 BUSPWR VBUS1 VBUS1 DP2 DN2 DP3 DN3 DP4 DN4 DN5 DP5 DP DN OVR2 OVR[...]

  • Page 45

    _ 8.10 SCHEMA TICS INTERFACE BD _AUDIO LINE OUT ACER_LCD_G24 _ PCB No. HDMI AUDIO CODEC deleted for ( P243W HDMI model) HDMI LEFT _ HDMI RIGHT _ AUWS 6 AUSD 6 AUSCK 6 AUMCK 6 GND VS +5V TP519 C512 3 3u 50V ./ D348 X100MV05 2 1 TP525 TP528 C513 3 3u 50V ./ C505 100u 10V / I324 CS4344 6 1 3 8 2 4 5 7 10 9 FILT SDIN LRCK AGND #/ DEM SCLK MCLK VQ AOUTL[...]

  • Page 46

    _ 8.1 1 SCHEMA TICS INVERTER BD ACER_LCD_G24 _ PCB No. 6832188000P0 ON OFF - BRI 1206 0805 0805 1206 0603 0603 0603 0603 0603 0603 0603 0603 0805 0603 0603 0603 0805 1206 GND GND GND GND GND GND VS4 VA IS4 VB IS3 GND GND GND IS3 IS2 IS1 1 IS1 IS10 IS8 IS7 IS4 IS5 IS6 IS9 VS3 VS1 VB IS1 VS2 IS2 VA VS7 VB IS7 VS8 IS8 VA VS5 VB IS5 VS6 VA VS1 1 VB IS1[...]

  • Page 47

    _ 8.12 SCHEMA TICS FUNCTION _KEY ACER_LCD_G24 _ PCB No. 6832194800P0 LEDORANGE LEDBLUE Menu KEY POWER MENU E MINUS SELECT PLUS LED AMBER _ LED BLUE _ C606 0 1u . S605 Auto exit / C603 0 1u . S602 Right R606 240 C604 0 1u . C601 0 1u . S603 Left R605 200 S606 E C605 0 1u . S604 Menu S601 Power C602 0 1u . Y B D601 LED 2 1 4 3 P601 10 HEADER 1 2 3 4 [...]

  • Page 48

    8.13 ACER_LCD_G24 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 PCB No. Go to cover page 47 ACER G24[...]

  • Page 49

    8.14 ACER_LCD_G24 LA YOUTS_INTERF ACE BOARD _ PCB No. 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 48 ACER G24[...]

  • Page 50

    8.15 ACER_LCD_G24 LA YOUTS_FUNCTION KEY BOARD _ PCB No. 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 49 ACER G24[...]

  • Page 51

    8.16 ACER_LCD_G24 LA YOUTS_INVERTER BOARD _ PCB No. 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 50 ACER G24[...]