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Acer X223 X223W LCD Service Guide - Page 31

SEC LTM220M1 V0 L01 - x223w backlight

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6. Schematics and Layouts: 6.1 ACER_LCD_X223W_SCHEMATICS_BLOCK DIAGRAM 1 2 3 4 5 6 7 8 9 10 11 12 13 LCD Module AUO M220EW01-V2/V0 A Backlight M201EW02-V8/V9 A CPT CLAA201WA04A SEC LTM220M1-V0/L01 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 I303 DDC DDC 24LC02B 24LC02B TMDS R,G,B,Hs,Vs E I306 Flash EPROM SST 25VF010A PMC 25LV010A DVI_DDC_SCL, DVI_DDC_DAT P303 VGA_DDC_CLK, VGA_DDC_DAT P302 DVI-D D-SUB F Digital Analog Video Video Input Input G G DVI OPTION 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. 6832190100P01 ACER X223W 30 Go to cover page

Section	Page
Cover page	1
1. Product Specification	3
1.1 SCOPE	3
1.2 GENERAL REQUIREMENTS	3
1.3 ELECTRICAL	3
1.4 PANEL ELECTRICAL	7
1.5 Optical Characteristics	8
2 OSD Menu	9
2.1 MAIN OSD MENU	9
3. Exploded Diagram	11
3.1 Packing Exploded Diagram	11
3.2 Product Exploded Diagram	12
4. Assembly and Disassembly Procedures	13
4.1 Assembly procedures:	13
4.2 Disassembly procedures	17
5. Troubleshooting	21
5.1 No.display of screen (Screen is black, color of LED isamber)	21
5.2 Nothing display on screen (screen is black, color of LED isblue)	22
5.3 Checking the back light unit	24
5.4 Abnormal screen for VGA	25
5.5 Abnormal screen (For the DVI)	25
5.6 Abnormal OSM display adjust problem	27
5.7 Abnormal plug and play operation for VGA	28
5.8 Abnormal plug and play operation (For the DVI)	29
6. Schematics and Layouts:	31
6.1 ACER_LCD_X223W_SCHEMATICS_BLOCK DIAGRAM	31
6.2 ACER_LCD_X223W_SCHEMATICS_POWER BOARD	32
6.3 ACER _ _LCD_X223W SCHEMATICS_INTERFACE_TOP	33
6.4 ACER_LCD_X223W_SCHEMATICS_INTERFACE POWER	34
6.5 ACER_LCD_X223W_SCHEMATICS_INTERFACE BD_VGA	35
6.6 ACER_LCD_X223W_SCHEMATICS_INTERFACE BD_SCALER	36
6.7 ACER_LCD_X223W_SCHEMATICS_INTERFACE BD_KEY & PANEL INTERFACE	36
6.8 ACER_LCD_X223W_SCHEMATICS_FUNCTION _KEY	37
6.9 ACER_LCD_X223W _LAYOUTS_POWER BOARD	39
6.10 ACER_LCD_X223W LAYOUTS__ YOUTS_INTERFACE BOARD	40

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