Home » Acer Manuals » Computer Monitors » Acer X223 » Manual Viewer

Acer X223 X223W LCD Service Guide - Page 30

Checking the DC/DC converter circuit

Get Acer X223 PDF manuals and user guides

Add to My Manuals
Save this manual to your list of manuals

Page 30 highlights

5.9 Checking the DC/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. Failure Point 1) Printed wire broke between P301 pin5, pin6, and I302 pin3. Failure Point I302 is failure. Check the 3.3V is input to Q305 pin1. NG OK Check the 1.8V is output from D326 pin 1. NG OK Failure Point 1) Printed wire broke between I302 pin 2. 4, Q306 pin1 and I305 VCTRL pin. 2) FB311, FB312, FB313, FB314, FB315, are open. Failure Point Printed wire broke between I302 pin2, pin4 and Q305 pin1. Failure Point D326 is failure.

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

We apologize, but we cannot currently deliver this PDF manual by request of the manufacturer.

You can visit the Acer X223 on the Acer site to download this or other manuals by visiting this link.

We apologize for any inconveniece.