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Service Manual AOC2241VG

Key Board---OSD no working

9.3 Writing IC Roft program step

IC：main board Scaler U401: NT68668, U402 PM25LV020-100SCE 2MB SOIC-8

Step1：Connection

1. Connect one end of the print line PC, the print line to connect the other end of ISP programming card（715GT034-B）；

2. Will be burning machine to connect ISP D-SUB；

3. Connect 12V ,then Burn Card Connection as shown below

Check flow chart

For the key board

OSD is unstable or not

working

Is Key Pad Board connecting

normally?

Is Button Switch normally?

Is Key Pad Board normally?

Check Main Board

Connect Key Pad Board

Replace Button Switch

Replace Key Pad Board

AOC AOC2241VG User Manual

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