Acer MB243WABNS service manual Troubleshooting Abnormal OSM display OSD Adjusment Problem

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ACER G24

 

 

 

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5. Troubleshooting (continued)

5.5 Abnormal OSM display - OSD Adjusment Problem

Check the input TTL level

whether if it was altered upon pressing the function keys.

OK

Proceed to “5.4 Abnormal Section”

Failure Point

1.Printed wire is broken between P303 pin 2 and I306 pin 87. NG 2. Printed wire is broken between P303 pin 3 and I306 pin 88.

3.Printed wire is broken between P303 pin 4 and I306 pin 89.

4.Printed wire is broken between P303 pin 5 and I306 pin 90.

5.Printed wire is broken between P303 pin 6 and I306 pin 22.

6.Printed wire is broken between P303 pin 7 and I306 pin 1.

7.C325, C326, C327, C328, C329,C330 is short.

8.R339, R340, R341, R342, R343, R346, R347, R348, R349, R350 ,R351, R352 is short or open.

9.I306 is defected.

(Note: more than one components defected is possible.)

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Contents Acer Go to cover Scope Sync Signal Loading Video Input Signals Function LED Color Factory Preset Video Timings Digital Inputs Panel Electrical Diameter, they must be at least 15mm apart Main OSD Menu Outline Description for control function OSD Manu Exploded Diagram Packing Exploded Diagram Exploded Diagram Product Exploded Diagram Assembly and Disassembly Procedures S10 S11 S12 S22 Open the carton with a proper tool S10 S15 S18 Go to cover Proceed to 5.3 Checking the backlight unit section Troubleshooting Troubleshooting Abnormal Screen Troubleshooting Abnormal OSM display OSD Adjusment Problem Failure Point Confirm the output of serial Checking the control circuit of vertical sync pulse Troubleshooting Checking the resolution change IC movement Between I301, I303 Troubleshooting Checking the inverter board circuit Failure Point I314 was damaged Firmware Upgrade Process Go to cover Cedid Go to cover PCB No PCB No P01 For Power Saving Control ACERLCDG24SCHEMATICSINTERFACEBDMCU and Function KEY Dsub ACERLCDG24SCHEMATICSINTERFACEBDHDMI and DVI Input 123 ACERLCDG24SCHEMATICSINTERFACEBDSDRAM ACERLCDG24SCHEMATICSINTERFACEBDUSB and CAM/MIC Output Hdmi Audio CODECdeleted for P243W Hdmi model ACERLCDG24SCHEMATICSINVERTER BD Menu KEY Power Board TOP Silk ACERLCDG24LAYOUTSINTERFACE Board ACERLCDG24LAYOUTSFUNCTION KEY Board ACERLCDG24LAYOUTSINVERTER Board