Instruction/ maintenance manual of the product MB243WABNS Acer
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T able of Contents Important Safety Notice------------------------------------------------------------------------------------- 01 01. Product Specification--------------------------------------------------------------------------------- 02 02.
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.
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.
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.
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 t.
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.
1.3.8 Display Communications Channel The monitor assembly shall provide a display communications channel that conforms to VESA DDC2Bi hardware requirements.
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.
2.1 MAIN OSD MENU Outline: The description for control function: 2 OSD Menu Go to cover page 8 ACER G24.
2. OSD Manu (continued) 9 Go to cover page ACER G24.
3.1 Packing Exploded Diagram 3. Exploded Diagram 10 Go to cover page ACER G24.
3.2 Product Exploded Diagram 3. Exploded Diagram (continued) 11 Go to cover page ACER G24.
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.
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.
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).
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.
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 .
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 .
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.
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.
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.
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.
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.
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 .
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 -.
_ 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 .
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 +.
_ 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 PSE.
_ 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 S.
_ 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 .
_ 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 MD.
_ 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 M.
_ 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 .
_ 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 .
_ 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 V.
_ 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 .
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.
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.
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.
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.
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If you already are a holder of Acer MB243WABNS, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Acer MB243WABNS.
However, one of the most important roles played by the user manual is to help in solving problems with Acer MB243WABNS. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Acer MB243WABNS along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
