ACER ACER_LCD_X223W_SM072301V1 Service Model ID: R22ANUW-M1 Service Manual Table of Contents Important Safety Notice------------------------------------------------------------------------------------- 01 01. Product Specification--------------------------------------------------------------------------------- 02 02. OSD Menu-----------------------------------------------------------------------------------------------08 03.
Important Safety Notice ACER X223W Go to cover page Product Anouncement: This product is certificated to meet RoHS Directive and ! Using Lead-Free solder to well mounted the parts. Lead-Free produced definition. Using approved critical ! The fusion point of Lead-Free solder requested in the components only is recommended when the situation to replace defective parts. Vender assumes no liability express or implied, arising out of any unauthorized modification of design or replacing non-RoHS parts.
2 ACER X223W 1. Product Specification Go to cover page The LCD monitor consists of an interface board , a power board 1.1 SCOPE This document defines the design and performance , a function key board and two speaker (1W)(with audio) requirements for an 20/22W inch diagonal , flat panel The interface board will house the flat panel control logic , monitor .
1. Product Specification (continued) ACER X223W 3 Go to cover page C o n n e c to r P in 1.3.2.1 Video Signal Amplitudes A s s ig n m e n t D SU B P in S ig n a l P in S ig n a l P in S ig n a l The three video inputs consist of Red ,Green , and Blue 1 R e d -V id e o 6 R e d -G N D 11 N C 2 G re e n -V id e o 7 G re e n -G N D 12 D D C -S D A signals, each with its own coaxial cable terminated at the 3 B lu e -V id e o 8 B lu e -G N D 13 H -S Y N C monitor.
ACER X223W 4 1. Product Specification (continued) Go to cover page 1.3.2.6 Abnormal Signal Immunity 1.3.3.4 OSD adjustment The monitor shall not be damaged by improper sync timing , pulse duration , or absence of sync , or ITEM 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 CONTENT AUDIO VOLUME To increase or decrease the sound level BRIGHTNESS Back light Luminance of the LCD panel is adjusted.
ACER X223W 1. Product Specification (continued) 5 Go to cover page 1.3.4.3 Mode Recognition Pull-in 1.3.5.2 Video Stretching The monitor shall recognize preset modes within a The monitor shall contain provisions to “stretch” the range of +/-1KHz whichever is less for horizontal ; video signal, so that an input signal from the and within +/-1Hz for vertical. computer in any resolution smaller than 1680 x 1050 is automatically expanded to fill the entire 1.3.4.4 User Display Modes screen.
6 ACER X223W 1. Product Specification (continued) Go to cover page 1.3.8 Display Communications Channel 1.4.4.2 Lamps Startup Time The monitor assembly shall provide a display The backlight lamps shall start about 2 sec of the communications channel that conforms to VESA time the monitor power switch is pressed or the DDC2Bi hardware requirements. This configuration monitor is restarted from a power - down mode .
1. Product Specification (continued) ACER X223W 7 Go to cover page 1.4.5.5 Defect Terminology 1.5 Optical Characteristics Table 3 gives the descriptive terms used in classifying Depends on the LCD supplier's spec. Details refer to QA defects. Inspection Spec. D ark / Spots / Lines Spots or lines that appear dark in the display patterns and are usually the result of contam ination. D efects do not vary in size or intensity (contrast) w hen contrast voltage is varied.
ACER X223W 8 2 OSD Menu Go to cover page 2.1 MAIN OSD MENU Outline: The description for control function: M a in M enu Ic o n Sub Menu Ic o n Sub Menu Ite m N /A W a rm N /A Cool D e s c r ip t io n S e t t h e c o lo r t e m p e r a t u r e t o w a r m w h it e . S e t t h e c o lo r t e m p e r a t u r e t o c o o l w h ite . U s e r /R e d U s e r /G r e e n A d ju s t s R e d /U s e r /G r e e n G r e e n /B lu e in t e n s it y .
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10 ACER X223W Go to cover page 3.1 Packing Exploded Diagram 3.
3. Exploded Diagram (continued) ACER X223W Go to cover page 3.
ACER X223W 12 4. Assembly and Disassembly Procedures Go to cover page 4.
4. Assembly and Disassembly Procedures (continued) 13 ACER X223W Go to cover page Use a Phillips-head screwdriver screwed the No.1~4 S8 Connect FFC cable to LCD panel. There are two locks over here when plugging in should be S10 screws on both side and assemble the LCD panel and bracket chassis module. noticed (No1~4 screw size=M3x6; Torque=3~4KGFxCM). 2 1 4 3 S7 S11 Use a Phillips-head screwdriver screwed the No.1~2 screws. (No1~2 screw size=M3x10; Torque=3~5KGFxCM).
ACER X223W 14 4. Assembly and Disassembly Procedures (continued) Go to cover page S14 Put a rear cover on the assembled unit and press on force mechanisms locked and firmly S18 Stick Vista and TC003 label on the correct position the same as below photo attached. S19 Assemble the stand upper side to the rear cover S15 Take a LDPE+EPE bag to cover the LCD monitor. Take a PE bag to cover the stand base. through the way of screwing 4 screws till both units firmly attached.
4. Assembly and Disassembly Procedures (continued) ACER X223W Go to cover page S21 Put accessories of stand, DVI cable, and user’s manual ,power cable on specific USER’S MANUAL STAND S22 DVI CABLE POWER CABLE positions as photo below.
ACER X223W 16 4. Assembly and Disassembly Procedures (continued) Go to cover page 4.2 Disassembly procedures S1 S4 Open the carton with a proper tool. Put returned unit on a protective cushion,then remove LDPE+EPE bag. Tear off tapes to remove the screen protector card then turn over the LCD monitor (screen faced down), FEATURE LABEL VISTA LABEL S2 Take out all accessories including D-SUB cable power cable, DVI cables, user’s manual, and stand base and packing material from the carton.
4. Assembly and Disassembly Procedures (continued) ACER X223W 17 Go to cover page Unhook the key function board from rear bezel, S8 Place cloth on the panel where you are working S9 disconnect the key function cable on to protect the panel. Continuously, wedge your finger between the front bezel and the panel, then pry up on the front bezel to disengage the locking mechanism.
ACER X223W 18 4. Assembly and Disassembly Procedures (continued) Go to cover page S12 Use a Phillips-head screwdriver unscrewed the No.1~4 screws to disassemble the LCD panel S15 and bracket chassis module. Disconnect the FFC cable to the connector of panel. Use finger to push the lock according to arrow direction then take out the FFC cable (No1~4 screw size=M3x6; Torque=3~4KGFxCM). 1 2 4 3 Unplug 4 lamp cables (No. 1~4). S13 S16 S14 Take out lamp cables right through the No.
4. Assembly and Disassembly Procedures (continued) ACER X223W Go to cover page Use a Phillips-head screwdriver unscrewed the S18 No.1~4 screws to disassemble the power board. (No1 screw size=M4x8; No2~4 screw size=M3x6; Torque=9~10KGFxCM). 3 2 1 4 Disconnect the FFC, P301, and function key S19 cables to connectors of interface board.
ACER X223W 20 5. Troubleshooting Go to cover page 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 time of the frequency that it can't be distinguished. Proceed "No OSM display" section. Yes Check if the sync signal from computer is output and if the video cable is connected normally.
ACER X223W 5. Troubleshooting (continued) Go to cover page 5.2 Nothing display on screen (screen is black, color of LED is blue) Is backlight lit? NG Refer "Checking the backlight unit" section" OK Check the video cable for failure. Check the host for output signal is all black or not. Is backlight lit? NG OK Check OSM menu is display on screen when you push the "PROCEED" key. 1) Change pattern of video signal output on the host. 2) Reconnect the video cable. 3) Change the video cable.
22 ACER X223W 5. Troubleshooting (continued) Go to cover page 5.2 Nothing display on screen (screen is black, color of LED is blue) continued Continue Check the 5V power supply for P304 pin 1, 2, 3 NG Check the I302 pin2 if voltage is 3.3V Proceed "Checking the DC/DC converter circuit" section. NG OK Check the D326 pin1 if voltage is 1.8V Proceed "Checking the DC/DC converter circuit" section. NG OK OK Check the I301 pin2 if voltage is 5V NG Failure Point 1) FB301 is open.
5. Troubleshooting (continued) ACER X223W Go to cover page 5.3 Checking the back light unit Is +22V supplied to inverter PWB ? (by the power board) Failure Point NG Power board of Inverter part failure. OK Check the BKLT_EN signal of the DC input P301 pin2 at TTL high level. Failure Point NG OK 1) printed wire broke between P301 pin2, R303 and I305 pin 88. 2) I305 is failure. Check the BKLT_ADJ signal of the input P301 pin3 from I305 pin86 is a PWM signal.
24 ACER X223W 5. Troubleshooting (continued) Go to cover page 5.4 Abnormal screen for VGA Check the R, G, B video signal from computer input on P302 of video connector. NG Failure Point OK 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 I305 pin18, 20, 23 respectively that their level is 0.0 to 0.7Vp-p.
ACER X223W 5. Troubleshooting (continued) Go to cover page 5.5 Abnormal OSM display adjust problem Check the input TTL level whether was changed when pressed function keys on the P306 pin 4, 5 (normal is high level, when push buttom, generated low level plus) NG Failure Point 1) Function key wire disconnection. 2) Function key wire is failure. 3) Function key board is failure. OK Check the input TTL level of I305 pin89, 90 whether was changed when pressed function keys.
26 ACER X223W 5. Troubleshooting (continued) Go to cover page 5.6 Abnormal plug and play operation for VGA Confirm the host computer supplies DDC2B mode. NG OK Failure Point The host machine is not communicatiog in DDC2B mode. Check the voltage on P302 pin9 that is power DC 5 V. NG OK Failure Point The Video cable is failure. Check the voltage on I303 pin8 that is power DC 5 V. NG Failure Point 1) Printed wire broke between I303 pin8, D308 and P302 pin9. 2) D309, C329 is short.
5. Troubleshooting (continued) ACER X223W Go to cover page 5.7 Checking the interface circuit of sync signal 5.7.1 Checking the control circuit of horizontal sync pulse Check the horizontal sync signal on P302 pin13 TTL level. NG Failure Point OK Video cable is failure. Check the horizontal sync signal on I305 pin27 TTL level. NG Failure Point OK Failure Point Process "Checking the resolution change IC movement" section. 1) Printed wire broke between P302 pin13 and I305 pin27.
28 ACER X223W 5. Troubleshooting (continued) Go to cover page 5.8 Checking the resolution change IC movement Check +3.3V supply on I305 pin8, pin14, pin16, pin24 , pin32, pin49, pin56, pin75, pin98 NG Proceed " Checking the DC/DC converter circuit" section. NG Proceed " Checking the DC/DC converter circuit" section. OK Check +1.8V supply on I305 pin 51, 66, 82, 34. OK Check X301 14.318MHz clock input to I305 pin96 and pin97 at TTL level.
5. Troubleshooting (continued) ACER X223W Go to cover page 5.9 Checking the DC/DC converter circuit Check the 5V is output from P301 pin5, pin6. OK NG Failure Point 1) Power wire disconnection. 2) Power board is failure. Check the 5V is input to I302 pin3. NG Failure Point OK 1) Printed wire broke between P301 pin5, pin6, and I302 pin3. Check the 3.3V is output from I302 pin2, 4. NG OK Failure Point I302 is failure. Check the 3.3V is input to Q305 pin1.
6. Schematics and Layouts: AC 110/220V Input Power & Invertor Board 1 2 2 6.1 ACER_LCD_X223W_SCHEMATICS_BLOCK DIAGRAM A B C D E F G 1 3 4 4 5 5 P301 Power Con. 6 VCTRL 1.8v 6 Flash EPROM SST 25VF010A PMC 25LV010A I306 Q305 I302 DC-DC 5v-3.3v Audio DC 5.3V Out (Option) +5V Brightness,Inv_On/Off Backlight 3 7 8 LVDS 9 Panel Con.
L G 1 3 1 F801 2.5AL250V R802 SCK103 2 T802 LINE FILTER R801 C801 0.33U/275V I801 3 C820 1000P/250V 7 2 6 8 C807 10UF/50V BEAD L809 C819 0.22U/275V 6.2 ACER_LCD_X223W_SCHEMATICS_POWER BOARD A 2 1M 1/4W MGF C808 1 SG5841J 3 1000P/250V 5 4 + 7 6 5 4 3 2 1 BRI C812 1000P GND-1 ON_OFF 10K R113 R102 30.1K 1% 8 GND ZD801 22D 4 D807 RL206 1 D805 RL206 4 2 GND C106 0.047uF + 5 D808 RL206 6 R824 33K 1% GND 6 C108 220P R818 0.
VDD VLCD 1 VCC5V VCC5V VCC5V VCC3V3 VLCD VCC5V POWER VCC5V VDD 3 DDC_WPn RX2+ RX2RX1+ RX1RX0+ RX0RXC+ RXC- HDCP_CTRLn DVI_DETn DVI_DDC_DAT DVI_DDC_CLK 3 PANELVCC_EN VCC3V3 VLCD 2.POWER 2 BKLT_EN BKLT_ADJ 4.DVI & DDC INTERFACE VCC5V DVI & DDC INTERFACE 3.VGA & DDC INTERFACE DDC_WPn VGA_DDC_DAT VGA_DDC_CLK VGA_DETn RIN GNDR GIN GNDG SOG BIN GNDB HSYNC VSYNC VGA & DDC INTERFACE 2 6.
P301 1 2 TP1 BACKLIGHT_ADJ BACKLIGHT_EN VDD NOTE:FOR AUDIO POWER 5V 9 8 7 6 5 4 3 2 1 JWT-A2001WV2-9P VDD TP5 100uF/16V C303 4 C302 3 0.1uF 2K4 VDD 5 Su scon UK 3000hrs VCC5V 100uF/16V C307 VCC5V C306 VCC5V 0.1uF TP2 C305 6 TP3 C304 7 0.1uF(NC) 0.1uF C308 47K R304 TP7 R301 R303 G 8 100(22K) 1K S DC PULSE D 3 I301 AO3419/3401 2 8 Su scon UK 3000hrs C310 TP11 C309 47K R305 B 10uF/16V Q301 MMBT3904 VCC3V3 TP14 C314 6 VCC3V3 0.
2 3 TP15 D302 MMBD7000 C320 0.1uF 4 TP16 D303 MMBD7000 VCC5V TP35 D305 47 47 C321 0.1uF MMSZ5232B TP37 R328 R330 TP40 4 3 5 FB303 TP17 FB305 4K7 VCC5V FB307 R320 6 SBK160808T-110Y-S SBK160808T-110Y-S SBK160808T-110Y-S VCC5V R319 47K C325 SBK160808T-451Y-S 0.
VCC3V3 1 VCC3V3 FB311 PBY160808T-301Y-S Su scon UK 3000hrs 2 C349 3 C348 0.1uF TP81 C347 0.1uF VDVI C346 0.1uF C365 C366 C367 0.1uF C368 4 FB312 0.1uF C381 TP99 TP97 VPLL C352 5 C351 0.1uF TP82 C350 0.1uF VMPLL 1uF TP91 C374 0.1uF 37 38 39 40 80 52 53 6 6 FB313 VDVI VMPLL C355 7 C354 0.1uF TP83 C353 0.1uF VPO 7 8 FB314 81 54 55 58 59 60 61 62 63 64 65 67 68 69 70 71 72 73 74 77 78 C358 TP84 C357 0.
1 LVA0P LVA0M LVA1P LVA1M LVA2P LVA2M LVACKP LVACKM LVA3P LVA3M 2 LVA0P LVA0M LVA1P LVA1M LVA2P LVA2M LVACKP LVACKM LVA3P LVA3M TP107 TP125 3 TP109 TP123 TP111 TP121 TP119 TP113 TP117 TP115 4 6.7 ACER_LCD_X223W_SCHEMATICS_INTERFACE BD_KEY & PANEL INTERFACE A B R363 4K7 TP128 R366 4K7 KEY_MENU 5 LVB0P LVB0M LVB1P LVB1M LVB2P LVB2M LVBCKP LVBCKM LVB3P LVB3M R369 100 6 LVB0P LVB0M LVB1P LVB1M LVB2P LVB2M LVBCKP LVBCKM LVB3P LVB3M VCC3V3 KEY_AUTO 100 KEY_E R372 KEY_LEFT 0.
3 3 4 5 100 100 56K_1% 30K_1% 15K_1% R605 R606 R607 5 C602 0.1uF(NC) R601 R600 R602 R603 R604 C601 0.1uF(NC) 4 56K_1% 30K_1% 15K_1% 6 6 7 7 8 8 9 9 10 10 11 LEDBLUE 1 4 3 12 2 D601 LED LEDORANGE S604 Menu KEY SW PUSHBUTTON S606 E KEY SW PUSHBUTTON S605 AUTO/EXIT KEY SW PUSHBUTTON S601 POWER KEY SW PUSHBUTTON S603 LEFT KEY SW PUSHBUTTON S602 RIGHT KEY SW PUSHBUTTON 11 B 2 2 12 Y 7 8 JWT-CN125WR0-6PS 1 2 3 4 5 6 P601 1 6.
2 POWER BOARD - TOP SILK 1 6.9 ACER_LCD_X223W_LAYOUTS_POWER BOARD A 3 4 5 6 7 8 9 POWER BOARD - BOTTOM SILK 10 11 12 13 13 A B 12 B 11 C 10 C 9 D 8 D 7 E 6 E 5 F 4 F 3 G 2 G 1 PCB No.
6.10 ACER_LCD_X223W_LAYOUTS_INTERFACE BOARD 2 3 4 5 6 7 8 9 10 11 12 13 A 1 A 13 B 12 B 11 C 10 C 9 D 8 D 7 E 6 E 5 F 4 F 3 G 2 G 1 PCB No.
3 6.11 ACER_LCD_X223W_LAYOUTS_FUNCTION KEY BOARD 2 4 5 6 7 8 9 10 11 12 13 A 1 A 13 B 12 B 11 C 10 C 9 D 8 D 7 E 6 E 5 F 4 F 3 G 2 G 1 PCB No.
