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Acer X193 X183H / X193HQ Service Guide - Page 36

Audiolineinput, Video Signal input DDC, Functionkeyinput

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8. BLOCK DIAGRAM 1 2 3 4 5 6 7 8 9 10 11 12 13 CCFT Drive A LCD Flat Panel A Panel date& control.DC power B B DC 5V Inverter control Interface Board AC to DC Adapter Interface Board C DC to AC Inverter Flat Panel Controller,DDC C Audio AMP (Option) D D Speaker line input E E Function key input Video Signal input& DDC Audio line input 1W*2 F Speaker (Option) G AC-IN Audio Source 1 2 3 4 5 6 7 F G Host Computer Function Key Board 8 9 10 11 12 13 PCB No. ACER X203H 35 Go to cover page

Section	Page
Cover	1
Important Safety Notice	2
1. Product Specification	2
1.1 SCOPE	2
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	11
4. Assembly and Disassembly Procedures	12
4.1 Assembly procedures:	12
4.2 Disassembly procedures	16
5. Troubleshooting	20
5.1 No display on the screen (Screen is black and colour of LED is amber.)	20
5.2 Nothing displays on the screen (Screen is black and colour of LED is blue.)	21
5.3 Checking the back light unit	22
5.4 Abnormal screen for VGA	23
5.5 Abnormal screen (For the DVI)	25
5.6 Abnormal OSM display adjust problem	25
5.7 Abnormal plug and play operation for VGA	27
5.8 Abnormal plug and play operation (For the DVI)	28
5.9 Checking the interface circuit of sync signal	29
5.10 Checking the resolution change IC movement	30
5.11 Checking the DC/DC converter circuit	31
6. Firmware Upgrade Process	32
6.1 Hardware Configuration	32
6.2 Realtek F/W Configuration:	32
7. Writing EDID Process	34

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