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Acer P203 P203W LCD Service Guide - Page 33

SEC LTM220M1 V0 L01

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6. Schematics and Layouts: 6.1 ACER_LCD_P203W_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 P203W 32 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
5.9 Checking the interface circuit of sync signal	30
5.10 Checking the resolution change IC movement	31
5.11 Checking the DC/DC converter circuit	32
6. Schematics and Layouts:	33
6.1 ACER_LCD_P203W_SCHEMATICS_BLOCK DIAGRAM	33
6.2 ACER_LCD_P203W_SCHEMATICS_POWER BOARD	34
6.3 ACER _ _LCD_P203W SCHEMATICS_INTERFACE_TOP	34
6.4 ACER_LCD_P203W_SCHEMATICS_INTERFACE POWER	35
6.5 ACER_LCD_P203W_SCHEMATICS_INTERFACE BD_VGA & DDC INTERFACE	37
6.6 ACER_LCD_P203W_SCHEMATICS_INTERFACE BD_DVI & DDC INTERFACE	38
6.7 ACER_LCD_P203W_SCHEMATICS_INTERFACE BD_SCALER_GM5726H	38
6.8 ACER_LCD_P203W_SCHEMATICS_INTERFACE BD_KEY & PANEL INTERFACE	39
6.9 ACER_LCD_P203W_SCHEMATICS_FUNCTION _KEY	41
6.10 ACER_LCD_P203W _LAYOUTS_POWER BOARD	42
6.11 ACER_LCD_P203W LAYOUTS__ YOUTS_INTERFACE BOARD	43

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