Acer X223 X223W LCD Service Guide
Acer X223 Manual
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Acer X223 manual content summary:
- Acer X223 | X223W LCD Service Guide - Page 1
Specification 02 02. OSD Menu 08 03. Exploded Diagram 10 04. Assembly and Disassembly Procedures 12 05. Troubleshooting 20 06. Schematics and Layouts 30 Appendix I : User's Manual Appendix II: Quick Setup Guide Appendix III : Spare Parts Llist Safety Notice Any person attempting to service - Acer X223 | X223W LCD Service Guide - Page 2
have repairing knowledge, experience, as well as appropriate product training per new model before performing the service procedures. NOTICE: ! To avoid electrical shocks, the products should be connect to an authorized power cord, and turn off the master power switch each time before removing the - Acer X223 | X223W LCD Service Guide - Page 3
2 ACER X223W Go to cover page 1. Product Specification 1.1 SCOPE This document defines the design and performance requirements for an 20/22W inch diagonal , flat panel monitor .The display element shall be a WSXGA (1680x1050) resolution TFT-LCD (Thin Film Transistor Liquid Crystal Display).16.7M - Acer X223 | X223W LCD Service Guide - Page 4
Product Specification (continued) ACER X223W 3 Go to signal is used to initiate the display of a new frame .VS may be either active high or active low, depending on the timing 1.3.2.4 Sync Signal Levels The monitor must accept sync signals from both 3.3 and 5 volt TTL logic families.The inputs - Acer X223 | X223W LCD Service Guide - Page 5
4 ACER X223W Go to cover page 1. Product Specification (continued) 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 - Acer X223 | X223W LCD Service Guide - Page 6
input signals from the computer shall cause damage to the flat panel or any other component of the monitor. The LCD panel interface shall support the TFT standard. 1.3.6 DC - AC Inverter Requirements The DC-AC inverter is on the power board. The frequencies used by the DC-AC inverter used to power - Acer X223 | X223W LCD Service Guide - Page 7
edge of the light guide that sputtering over the life of the lamps shall not cause degradation of the luminance uniformity (such as non-illuminated bands along the edges of the display). 1.4.4.2 Lamps Startup Time The backlight lamps shall start about 2 sec of the time the monitor power switch is - Acer X223 | X223W LCD Service Guide - Page 8
Specification (continued) ACER X223W 7 Go lights, variation / non - uniformity (splotchiness) appears light (white) with the display and might vary in size. W hen the unit lights, line(s) in the monitor -On will be reviewed by Lite-On as the LCD supplier's spec. Details refer to QA Inspection Spec. - Acer X223 | X223W LCD Service Guide - Page 9
8 ACER X223W Go to cover page 2.1 MAIN OSD MENU Outline: 2 OSD Menu The description for control function: M a in M en u Ic o n Sub Menu Ic o n N /A N /A N /A N /A N /A N /A N /A N /A N /A N /A N /A N /A N /A N /A N /A N /A Sub Menu Ite m D e s c rip tio n A d - Acer X223 | X223W LCD Service Guide - Page 10
2. OSD Manu (continued) ACER X223W 9 Go to cover page - Acer X223 | X223W LCD Service Guide - Page 11
10 ACER X223W Go to cover page 3.1 Packing Exploded Diagram 3. Exploded Diagram - Acer X223 | X223W LCD Service Guide - Page 12
3.2 Product Exploded Diagram 3. Exploded Diagram (continued) ACER X223W 11 Go to cover page - Acer X223 | X223W LCD Service Guide - Page 13
S2 cushion and stick an insulator on the specific position, take a power board and turn it over. Then, put it on the specific positions of bracket chassis base. Turn the monitor faced down and put it on the S6 Bracket Chassis module till both parts firmly Take lamp cables out from the holes - Acer X223 | X223W LCD Service Guide - Page 14
4. Assembly and Disassembly Procedures (continued) ACER X223W 13 Go to cover page S8 Connect FFC cable to LCD panel. There are two locks over here when plugging in should be noticed S10 Use a Phillips-head screwdriver screwed the No.1~4 screws on both side and assemble the LCD panel and - Acer X223 | X223W LCD Service Guide - Page 15
14 ACER X223W Go to cover page 4. Assembly and Disassembly Procedures (continued) S14 Put a rear cover on the assembled unit and press on force mechanisms locked and firmly attached. Stick Vista and TC003 label on the correct S18 position the same as below photo S15 Assemble the stand upper - Acer X223 | X223W LCD Service Guide - Page 16
4. Assembly and Disassembly Procedures (continued) S21 Put accessories of stand, DVI cable, and user's manual ,power cable on specific positions as photo below. USER'S MANUAL ACER X223W 15 Go to cover page POWER CABLE DVI CABLE STAND D-SUB CABLE S22 Move previous assembled parts into the - Acer X223 | X223W LCD Service Guide - Page 17
LDPE+EPE bag. Tear off tapes to remove the screen protector card then turn over the LCD monitor (screen faced down), VISTA LABEL Take out all accessories including D-SUB cable S2 power cable, DVI cables, user's manual, and stand base and packing material from the carton. (Note: It depends - Acer X223 | X223W LCD Service Guide - Page 18
4. Assembly and Disassembly Procedures (continued) ACER X223W 17 Go to cover page Place cloth on the panel where you are working S8 on ;Torque=3~5KGFxCM). 2 1 S11 Use a Phillips-head screwdriver unscrewed the No.1~2 screws to lease power plug (No1~2 screw size=M3x10; Torque=3~5KGFxCM). 1 2 - Acer X223 | X223W LCD Service Guide - Page 19
ACER X223W Go to cover page 4. Assembly and Disassembly Procedures (continued) S12 Use a Phillips-head screwdriver unscrewed the No.1~4 screws to disassemble the LCD holes and separate the bracket chassis module and LCD panel apart. S17 Use a Phillips-head screwdriver unscrewed the No.1~4 screws to - Acer X223 | X223W LCD Service Guide - Page 20
Procedures (continued) S18 Use a Phillips-head screwdriver unscrewed the No.1~4 screws to disassemble the power board. (No1 screw size=M4x8; No2~4 screw size=M3x6; Torque=9~10KGFxCM). 3 2 ACER X223W 19 Go to cover page 4 1 Disconnect the FFC, P301, and function key S19 cables to - Acer X223 | X223W LCD Service Guide - Page 21
ACER X223W Go to cover page 5. Troubleshooting 5.1 No.display of screen (Screen is black, color of LED is amber) Does OSM display when you push PROCEED buttom. No When a signal isn't being inputted, it is indicated with "No Signal Input". it is indicated with "Out Of Range" at the Yes time - Acer X223 | X223W LCD Service Guide - Page 22
5. Troubleshooting (continued) 5.2 Nothing display on screen (screen is black, color of LED is blue) ACER X223W 21 Go to cover page Is backlight lit? NG OK Is backlight lit? NG OK Refer "Checking the backlight unit" section" Check the video cable for failure. Check the host for output signal is - Acer X223 | X223W LCD Service Guide - Page 23
22 ACER X223W Go to cover page 5. Troubleshooting (continued) 5.2 Nothing display on screen (screen is black, color of LED is blue) continued Continue Check the 5V power Check the input voltage level signals. NG OK Failure Point 1) The LVDS cable broke between P304 and LCD module. 2) LCD - Acer X223 | X223W LCD Service Guide - Page 24
5.3 Checking the back light unit 5. Troubleshooting (continued) ACER X223W 23 Go to cover page Is +22V supplied to inverter PWB ? (by the power board) NG OK Failure Point Power board of Inverter part failure. Check the BKLT_EN signal of the DC input P301 pin2 at TTL high level. NG OK - Acer X223 | X223W LCD Service Guide - Page 25
24 ACER X223W Go to cover page 5.4 Abnormal screen for VGA 5. Troubleshooting (continued) Check the R, G, B video signal from computer input on P302 of video connector. NG OK Check the R, G, B input video signals on I305 pin18, 20, 23 respectively that their level is 0.0 to 0.7Vp-p. NG OK Check - Acer X223 | X223W LCD Service Guide - Page 26
5.5 Abnormal OSM display adjust problem 5. Troubleshooting (continued) ACER X223W 25 Go to cover page Check the input TTL level whether disconnection. 2) Function key wire is failure. 3) Function key board is failure. Check the input TTL level of I305 pin89, 90 whether was changed when pressed - Acer X223 | X223W LCD Service Guide - Page 27
26 ACER X223W Go to cover page 5.6 Abnormal plug and play operation for VGA 5. Troubleshooting (continued) Confirm the host computer supplies DDC2B mode. NG OK Check the voltage on P302 pin9 that is power DC 5 V. NG OK Failure Point The host machine is not communicatiog in DDC2B mode. Failure - Acer X223 | X223W LCD Service Guide - Page 28
5. Troubleshooting (continued) 5.7 Checking the interface circuit of sync signal 5.7.1 Checking the control circuit of horizontal sync pulse ACER X223W 27 Go to cover page Check the horizontal sync signal on P302 pin13 TTL level. NG OK Check the horizontal sync signal on I305 pin27 TTL level. NG - Acer X223 | X223W LCD Service Guide - Page 29
28 ACER X223W Go to cover page 5. Troubleshooting (continued) 5.8 Checking the resolution change IC movement Check +3.3V circuit" section. Check X301 14.318MHz clock input to I305 pin96 and pin97 at TTL level. OK NG Check I305 pin 84 HWRESET signal is low level at normal operation. NG - Acer X223 | X223W LCD Service Guide - Page 30
DC converter circuit 5. Troubleshooting (continued) ACER X223W 29 Go to cover page Check the 5V is output from P301 pin5, pin6. NG OK Check the 5V is input to I302 pin3. NG OK Check the 3.3V is output from I302 pin2, 4. NG OK Failure Point 1) Power wire disconnection. 2) Power board is failure - Acer X223 | X223W LCD Service Guide - Page 31
B Power & Invertor Board C D P301 Power Con. Brightness,Inv_On/Off +5V Audio DC 5.3V Out (Option) I302 DC-DC 5v-3.3v Q305 VCTRL 1.8v VLCD P304 Panel Con. LVDS I305 Scaler TSUMU58BWHL-LF B RC Reset X301 XTAL 14.318MHZ P306 Key Con. C Function Key Board D E AC 110/220V Input F I304 - Acer X223 | X223W LCD Service Guide - Page 32
1% R122 13K 1% C120 470P X7R GND 1 2 D114 1N4148 21 21 1 1 P101 2P 22 1 1 P102 2P 22 C113 0.1UF GND D103 1N4148 GND 1 1 P103 2P 22 1 1 P104 2P 22 C114 0.1UF GND D115 1N4148 GND 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. 6832192600P01 A B C D E F G ACER X223W 31 Go to cover page - Acer X223 | X223W LCD Service Guide - Page 33
VCC5V F G VDD VLCD VCC5V VCC3V3 VLCD POWER VCC5V VDD BKLT_EN BKLT_ADJ PANELVCC_EN VCC3V3 VLCD 2.POWER BKLT_EN BKLT_ADJ PANELVCC_EN RX2+ RX2RX1+ RX1RX0+ RX0RXC AUDIO VDD AUDIO_EN VDD F VOLUME 7.AUDIO G 8 9 10 11 12 13 PCB No. 6832190100P01 ACER X223W 32 Go to cover page - Acer X223 | X223W LCD Service Guide - Page 34
5 6 7 8 9 10 11 12 13 VDD VDD NOTE:FOR AUDIO POWER 5V C301 C302 C303 A P301 0.1uF 0.1uF 100uF/16V Su scon UK 5 1 4 3 2 1 4 3 2 1 4 3 2 1 4 3 2 1 Hole4 Case_GND 8 7 6 5 D E F G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. 6832190100P01 ACER X223W 33 Go to cover page - Acer X223 | X223W LCD Service Guide - Page 35
4K7 TP47 2 Q302 MMBT3904 R329 2K4 TP51 TP48 DDC_WPn R331 4K7 VGA_DDC_CLK VGA_DDC_DAT HSYNC VSYNC DDC_WPn VGA_DDC_CLK VGA_DDC_DAT D E F G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. 6832190100P01 ACER X223W 34 Go to cover page - Acer X223 | X223W LCD Service Guide - Page 36
TP92 C374 0.1uF TP95 SPI_SDO SPI_CSn SPI_SCK SPI_SDI RESET C379 22pF X301 14.318MHZ C380 22pF C383 0.1uF VDDC VDDP VDDP VDDP VDDP AVDD_33 AVDD_33 23 22 20 19 21 RIN0P RIN0M GIN0P GIN0M SOGIN0 18 17 8 9 10 11 12 13 PCB No. 6832190100P01 A B C D E F G ACER X223W 35 Go to cover page - Acer X223 | X223W LCD Service Guide - Page 37
LVA1P LVA2M LVA2P LVACKM LVACKP LVA3M LVA3P VLCD VLCD 12 13 P304 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 CVILUX- KEY_ADC2 KEY_ADC1 P306 1 2 3 4 5 6 JWT-A2001WV2-06 10 11 12 13 PCB No. 6832190100P01 D E F G ACER X223W 36 Go to cover page - Acer X223 | X223W LCD Service Guide - Page 38
1 3 A 2 4 LEDORANGE Menu KEY S604 SW PUSHBUTTON B E KEY S606 SW PUSHBUTTON C AUTO/EXIT KEY S605 D SW PUSHBUTTON POWER KEY S601 SW PUSHBUTTON E LEFT KEY S603 SW PUSHBUTTON F RIGHT KEY S602 G SW PUSHBUTTON 8 9 10 11 12 13 PCB No. 6832192500P01 ACER X223W 37 Go to cover page - Acer X223 | X223W LCD Service Guide - Page 39
6.9 ACER_LCD_X223W_LAYOUTS_POWER BOARD 1 2 3 4 5 6 7 8 9 10 11 12 13 A POWER BOARD - TOP SILK POWER BOARD - BOTTOM SILK A B B C C D D E E F F G G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. ACER X223W 38 Go to cover page - Acer X223 | X223W LCD Service Guide - Page 40
6.10 ACER_LCD_X223W_LAYOUTS_INTERFACE BOARD 1 2 3 A 4 5 6 7 B 8 9 10 11 12 13 A B C C D D E E F F G G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. ACER X223W 39 Go to cover page - Acer X223 | X223W LCD Service Guide - Page 41
6.11 ACER_LCD_X223W_LAYOUTS_FUNCTION KEY BOARD 1 2 3 A 4 5 6 7 B 8 9 10 11 12 13 A B C C D D E E F F G G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. ACER X223W 40 Go to cover page